diff options
Diffstat (limited to 'pdf-as-pdfbox-2/src/main/java')
| -rw-r--r-- | pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/signing/pdfbox2/PADESPDFBOXSigner.java | 1749 |
1 files changed, 878 insertions, 871 deletions
diff --git a/pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/signing/pdfbox2/PADESPDFBOXSigner.java b/pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/signing/pdfbox2/PADESPDFBOXSigner.java index 3e1b7d9a..d780aeec 100644 --- a/pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/signing/pdfbox2/PADESPDFBOXSigner.java +++ b/pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/signing/pdfbox2/PADESPDFBOXSigner.java @@ -23,6 +23,58 @@ ******************************************************************************/ package at.gv.egiz.pdfas.lib.impl.signing.pdfbox2; +import java.awt.Graphics2D; +import java.awt.Image; +import java.awt.image.BufferedImage; +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.io.InputStream; +import java.util.ArrayList; +import java.util.Calendar; +import java.util.Collections; +import java.util.LinkedHashMap; +import java.util.List; +import java.util.Map; + +import javax.activation.DataSource; + +import org.apache.commons.io.IOUtils; +import org.apache.pdfbox.cos.COSArray; +import org.apache.pdfbox.cos.COSBase; +import org.apache.pdfbox.cos.COSDictionary; +import org.apache.pdfbox.cos.COSDocument; +import org.apache.pdfbox.cos.COSInteger; +import org.apache.pdfbox.cos.COSName; +import org.apache.pdfbox.cos.COSString; +import org.apache.pdfbox.pdmodel.PDDocument; +import org.apache.pdfbox.pdmodel.PDDocumentCatalog; +import org.apache.pdfbox.pdmodel.PDPage; +import org.apache.pdfbox.pdmodel.PDResources; +import org.apache.pdfbox.pdmodel.common.COSObjectable; +import org.apache.pdfbox.pdmodel.common.PDMetadata; +import org.apache.pdfbox.pdmodel.common.PDNumberTreeNode; +import org.apache.pdfbox.pdmodel.common.PDRectangle; +import org.apache.pdfbox.pdmodel.documentinterchange.logicalstructure.PDStructureElement; +import org.apache.pdfbox.pdmodel.documentinterchange.logicalstructure.PDStructureTreeRoot; +import org.apache.pdfbox.pdmodel.graphics.color.PDOutputIntent; +import org.apache.pdfbox.pdmodel.interactive.digitalsignature.PDSignature; +import org.apache.pdfbox.pdmodel.interactive.digitalsignature.SignatureOptions; +import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm; +import org.apache.pdfbox.pdmodel.interactive.form.PDField; +import org.apache.pdfbox.pdmodel.interactive.form.PDSignatureField; +import org.apache.pdfbox.preflight.PreflightDocument; +import org.apache.pdfbox.preflight.ValidationResult; +import org.apache.pdfbox.preflight.exception.SyntaxValidationException; +import org.apache.pdfbox.preflight.exception.ValidationException; +import org.apache.pdfbox.preflight.parser.PreflightParser; +import org.apache.pdfbox.rendering.ImageType; +import org.apache.pdfbox.rendering.PDFRenderer; +import org.apache.xmpbox.XMPMetadata; +import org.apache.xmpbox.schema.PDFAIdentificationSchema; +import org.apache.xmpbox.xml.DomXmpParser; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + import at.gv.egiz.pdfas.common.exceptions.PDFASError; import at.gv.egiz.pdfas.common.exceptions.PdfAsException; import at.gv.egiz.pdfas.common.messages.MessageResolver; @@ -36,7 +88,6 @@ import at.gv.egiz.pdfas.lib.impl.SignaturePositionImpl; import at.gv.egiz.pdfas.lib.impl.configuration.PlaceholderWebConfiguration; import at.gv.egiz.pdfas.lib.impl.configuration.SignatureProfileConfiguration; import at.gv.egiz.pdfas.lib.impl.pdfbox2.PDFBOXObject; -import at.gv.egiz.pdfas.lib.impl.pdfbox2.placeholder.SignaturePlaceholderExtractor; import at.gv.egiz.pdfas.lib.impl.pdfbox2.positioning.Positioning; import at.gv.egiz.pdfas.lib.impl.pdfbox2.utils.PdfBoxUtils; import at.gv.egiz.pdfas.lib.impl.placeholder.PlaceholderFilter; @@ -58,952 +109,908 @@ import at.knowcenter.wag.egov.egiz.pdf.PositioningInstruction; import at.knowcenter.wag.egov.egiz.pdf.TablePos; import at.knowcenter.wag.egov.egiz.table.Table; import iaik.x509.X509Certificate; -import org.apache.commons.io.IOUtils; -import org.apache.pdfbox.cos.*; -import org.apache.pdfbox.pdmodel.PDDocument; -import org.apache.pdfbox.pdmodel.PDDocumentCatalog; -import org.apache.pdfbox.pdmodel.PDPage; -import org.apache.pdfbox.pdmodel.PDResources; -import org.apache.pdfbox.pdmodel.common.COSObjectable; -import org.apache.pdfbox.pdmodel.common.PDMetadata; -import org.apache.pdfbox.pdmodel.common.PDNumberTreeNode; -import org.apache.pdfbox.pdmodel.common.PDRectangle; -import org.apache.pdfbox.pdmodel.documentinterchange.logicalstructure.PDStructureElement; -import org.apache.pdfbox.pdmodel.documentinterchange.logicalstructure.PDStructureTreeRoot; -import org.apache.pdfbox.pdmodel.graphics.color.PDOutputIntent; -import org.apache.pdfbox.pdmodel.interactive.digitalsignature.PDSignature; -import org.apache.pdfbox.pdmodel.interactive.digitalsignature.SignatureOptions; -import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm; -import org.apache.pdfbox.pdmodel.interactive.form.PDField; -import org.apache.pdfbox.pdmodel.interactive.form.PDSignatureField; -import org.apache.pdfbox.preflight.PreflightDocument; -import org.apache.pdfbox.preflight.ValidationResult; -import org.apache.pdfbox.preflight.exception.SyntaxValidationException; -import org.apache.pdfbox.preflight.exception.ValidationException; -import org.apache.pdfbox.preflight.parser.PreflightParser; -import org.apache.pdfbox.rendering.ImageType; -import org.apache.pdfbox.rendering.PDFRenderer; -import org.apache.xmpbox.XMPMetadata; -import org.apache.xmpbox.schema.PDFAIdentificationSchema; -import org.apache.xmpbox.xml.DomXmpParser; -import org.slf4j.Logger; -import org.slf4j.LoggerFactory; - -import javax.activation.DataSource; -import java.awt.*; -import java.awt.image.BufferedImage; -import java.io.ByteArrayOutputStream; -import java.io.IOException; -import java.io.InputStream; -import java.util.ArrayList; -import java.util.Calendar; -import java.util.Collections; -import java.util.LinkedHashMap; -import java.util.List; -import java.util.Map; public class PADESPDFBOXSigner implements IPdfSigner, IConfigurationConstants { - private static final Logger logger = LoggerFactory.getLogger(PADESPDFBOXSigner.class); - private boolean isAdobeSigForm = false; + private static final Logger logger = LoggerFactory.getLogger(PADESPDFBOXSigner.class); + private boolean isAdobeSigForm = false; - public void signPDF(PDFObject genericPdfObject, RequestedSignature requestedSignature, - PDFASSignatureInterface genericSigner) throws PdfAsException { + @Override + public void signPDF(PDFObject genericPdfObject, RequestedSignature requestedSignature, + PDFASSignatureInterface genericSigner) throws PdfAsException { - PDFAsVisualSignatureProperties properties = null; - List<SignaturePlaceholderData> placeholders; - List<SignaturePlaceholderData> availablePlaceholders; - SignaturePlaceholderData signaturePlaceholderData = null; + PDFAsVisualSignatureProperties properties = null; + List<SignaturePlaceholderData> placeholders; + List<SignaturePlaceholderData> availablePlaceholders; + SignaturePlaceholderData signaturePlaceholderData = null; - String placeholder_id = ""; - - if(PlaceholderWebConfiguration.getValue(PLACEHOLDER_WEB_ID) != null && !PlaceholderWebConfiguration.getValue(PLACEHOLDER_WEB_ID).equalsIgnoreCase("")){ - placeholder_id = PlaceholderWebConfiguration.getValue(PLACEHOLDER_WEB_ID); - } + String placeholder_id = ""; + if (PlaceholderWebConfiguration.getValue(PLACEHOLDER_WEB_ID) != null && !PlaceholderWebConfiguration + .getValue(PLACEHOLDER_WEB_ID).equalsIgnoreCase("")) { + placeholder_id = PlaceholderWebConfiguration.getValue(PLACEHOLDER_WEB_ID); + } - if (!(genericPdfObject instanceof PDFBOXObject)) { - // tODO: - throw new PdfAsException(); - } + if (!(genericPdfObject instanceof PDFBOXObject)) { + // tODO: + throw new PdfAsException(); + } - PDFBOXObject pdfObject = (PDFBOXObject) genericPdfObject; + final PDFBOXObject pdfObject = (PDFBOXObject) genericPdfObject; - if (!(genericSigner instanceof PDFASPDFBOXSignatureInterface)) { - // tODO: - throw new PdfAsException(); - } + if (!(genericSigner instanceof PDFASPDFBOXSignatureInterface)) { + // tODO: + throw new PdfAsException(); + } - PDFASPDFBOXSignatureInterface signer = (PDFASPDFBOXSignatureInterface) genericSigner; + final PDFASPDFBOXSignatureInterface signer = (PDFASPDFBOXSignatureInterface) genericSigner; + + String pdfaVersion = null; + + PDDocument doc = null; + final SignatureOptions options = new SignatureOptions(); + COSDocument visualSignatureDocumentGuard = null; + try { + + doc = pdfObject.getDocument(); + // if signature already exists dont create new page + final List<PDSignatureField> pdSignatureFieldList = doc.getSignatureFields(); + PDSignature signature; + + // sign a PDF with an existing empty signature, as created by the + // CreateEmptySignatureForm example. + String sigFieldName = pdfObject.getStatus().getSettings().getValue(SIGNATURE_FIELD_NAME); + signature = findExistingSignature(doc, sigFieldName); + if (signature == null) { + // create signature dictionary + signature = new PDSignature(); + } else { + isAdobeSigForm = true; + } + + signature.setFilter(COSName.getPDFName(signer.getPDFFilter())); + signature.setSubFilter(COSName.getPDFName(signer.getPDFSubFilter())); +// SignaturePlaceholderData signaturePlaceholderDataInit = + placeholders = PlaceholderFilter.checkPlaceholderSignatureLocationList(pdfObject.getStatus(), + pdfObject.getStatus().getSettings(), placeholder_id); - String pdfaVersion = null; +// placeholders = SignaturePlaceholderExtractor.getPlaceholders(); + availablePlaceholders = listAvailablePlaceholders(placeholders, existingSignatureLocations(doc)); - PDDocument doc = null; - SignatureOptions options = new SignatureOptions(); - COSDocument visualSignatureDocumentGuard = null; - try { + if (placeholder_id.equalsIgnoreCase("")) { + if (checkAvailablePlaceholders(placeholders, existingSignatureLocations(doc)) != null) { + placeholder_id = checkAvailablePlaceholders(placeholders, existingSignatureLocations(doc)).getId(); + } + } + + if (availablePlaceholders != null) { + signaturePlaceholderData = PlaceholderFilter + .checkPlaceholderSignatureLocation(pdfObject.getStatus(), pdfObject.getStatus().getSettings(), + placeholder_id); + } + + TablePos tablePos = null; + + if (signaturePlaceholderData != null) { + signature.setLocation(signaturePlaceholderData.getPlaceholderName()); + } + + if (signaturePlaceholderData != null) { + // Placeholder found! + placeholders.clear(); + logger.info("Placeholder data found."); + if (signaturePlaceholderData.getProfile() != null) { + logger.debug("Placeholder Profile set to: " + signaturePlaceholderData.getProfile()); + requestedSignature.setSignatureProfileID(signaturePlaceholderData.getProfile()); + } - doc = pdfObject.getDocument(); - //if signature already exists dont create new page - List<PDSignatureField> pdSignatureFieldList = doc.getSignatureFields(); - PDSignature signature; + tablePos = signaturePlaceholderData.getTablePos(); + if (tablePos != null) { - // sign a PDF with an existing empty signature, as created by the CreateEmptySignatureForm example. - String sigFieldName = pdfObject.getStatus().getSettings().getValue(SIGNATURE_FIELD_NAME); - signature = findExistingSignature(doc, sigFieldName); - if (signature == null) { - // create signature dictionary - signature = new PDSignature(); - } - else { - isAdobeSigForm = true; - } + final SignatureProfileConfiguration signatureProfileConfiguration = pdfObject.getStatus() + .getSignatureProfileConfiguration(requestedSignature.getSignatureProfileID()); - signature.setFilter(COSName.getPDFName(signer.getPDFFilter())); - signature.setSubFilter(COSName.getPDFName(signer.getPDFSubFilter())); -// SignaturePlaceholderData signaturePlaceholderDataInit = - placeholders = PlaceholderFilter.checkPlaceholderSignatureLocationList(pdfObject.getStatus(), - pdfObject.getStatus().getSettings(), placeholder_id); + final float minWidth = signatureProfileConfiguration.getMinWidth(); -// placeholders = SignaturePlaceholderExtractor.getPlaceholders(); - availablePlaceholders = listAvailablePlaceholders(placeholders, existingSignatureLocations(doc)); - - - if(placeholder_id.equalsIgnoreCase("")){ - if(checkAvailablePlaceholders(placeholders,existingSignatureLocations(doc))!=null) - { - placeholder_id = (checkAvailablePlaceholders(placeholders, existingSignatureLocations(doc))).getId(); - }; - } - - if(availablePlaceholders!=null) { - signaturePlaceholderData = PlaceholderFilter - .checkPlaceholderSignatureLocation(pdfObject.getStatus(), pdfObject.getStatus().getSettings(),placeholder_id); - } - - - - - TablePos tablePos = null; - - if(signaturePlaceholderData!=null) - signature.setLocation(signaturePlaceholderData.getPlaceholderName()); - - if (signaturePlaceholderData != null) { - // Placeholder found! - placeholders.clear(); - logger.info("Placeholder data found."); - if (signaturePlaceholderData.getProfile() != null) { - logger.debug("Placeholder Profile set to: " + signaturePlaceholderData.getProfile()); - requestedSignature.setSignatureProfileID(signaturePlaceholderData.getProfile()); - } - - tablePos = signaturePlaceholderData.getTablePos(); - if (tablePos != null) { - - SignatureProfileConfiguration signatureProfileConfiguration = pdfObject.getStatus() - .getSignatureProfileConfiguration(requestedSignature.getSignatureProfileID()); - - float minWidth = signatureProfileConfiguration.getMinWidth(); - - if(minWidth > 0) { - if (tablePos.getWidth() < minWidth) { - tablePos.width = minWidth; - logger.debug("Correcting placeholder with to minimum width {}", minWidth); - } - } - logger.debug("Placeholder Position set to: " + tablePos.toString()); - } - } - SignatureProfileSettings signatureProfileSettings = TableFactory - .createProfile(requestedSignature.getSignatureProfileID(), pdfObject.getStatus().getSettings()); - - //Check if input document is PDF-A conform - if (signatureProfileSettings.isPDFA()) { - DataSource origDoc = pdfObject.getOriginalDocument(); - InputStream stream = origDoc.getInputStream(); - //Run PreflightParser for checking conformity// - //runPDFAPreflight(origDoc); + if (minWidth > 0) { + if (tablePos.getWidth() < minWidth) { + tablePos.width = minWidth; + logger.debug("Correcting placeholder with to minimum width {}", minWidth); } - ValueResolver resolver = new ValueResolver(requestedSignature, pdfObject.getStatus()); - - String signerName = resolver.resolve("SIG_SUBJECT", signatureProfileSettings.getValue("SIG_SUBJECT"), - signatureProfileSettings); - - signature.setName(signerName); - signature.setSignDate(Calendar.getInstance()); - String signerReason = signatureProfileSettings.getSigningReason(); - - if (signerReason == null) { - signerReason = "PAdES Signature"; - } - - signature.setReason(signerReason); - logger.debug("Signing reason: " + signerReason); - - logger.debug("Signing @ " + signer.getSigningDate().getTime().toString()); - // the signing date, needed for valid signature - // signature.setSignDate(signer.getSigningDate()); - - signer.setPDSignature(signature); - - int signatureSize = 0x1000; - try { - String reservedSignatureSizeString = signatureProfileSettings.getValue(SIG_RESERVED_SIZE); - if (reservedSignatureSizeString != null) { - signatureSize = Integer.parseInt(reservedSignatureSizeString); - } - logger.debug("Reserving {} bytes for signature", signatureSize); - } catch (NumberFormatException e) { - logger.warn("Invalid configuration value: {} should be a number using 0x1000", SIG_RESERVED_SIZE); - } - options.setPreferredSignatureSize(signatureSize); - - if(signatureProfileSettings.isPDFA() || signatureProfileSettings.isPDFA3()) { - pdfaVersion = getPDFAVersion(doc); - signatureProfileSettings.setPDFAVersion(pdfaVersion); - } - - // Is visible Signature - if (requestedSignature.isVisual()) { - logger.info("Creating visual siganture block"); - - SignatureProfileConfiguration signatureProfileConfiguration = pdfObject.getStatus() - .getSignatureProfileConfiguration(requestedSignature.getSignatureProfileID()); + } + logger.debug("Placeholder Position set to: " + tablePos.toString()); + } + } + final SignatureProfileSettings signatureProfileSettings = TableFactory + .createProfile(requestedSignature.getSignatureProfileID(), pdfObject.getStatus().getSettings()); + + // Check if input document is PDF-A conform + if (signatureProfileSettings.isPDFA()) { + final DataSource origDoc = pdfObject.getOriginalDocument(); + final InputStream stream = origDoc.getInputStream(); + // Run PreflightParser for checking conformity// + // runPDFAPreflight(origDoc); + } + final ValueResolver resolver = new ValueResolver(requestedSignature, pdfObject.getStatus()); + + final String signerName = resolver.resolve("SIG_SUBJECT", signatureProfileSettings.getValue( + "SIG_SUBJECT"), + signatureProfileSettings); + + signature.setName(signerName); + signature.setSignDate(Calendar.getInstance()); + String signerReason = signatureProfileSettings.getSigningReason(); + + if (signerReason == null) { + signerReason = "PAdES Signature"; + } + + signature.setReason(signerReason); + logger.debug("Signing reason: " + signerReason); + + logger.debug("Signing @ " + signer.getSigningDate().getTime().toString()); + // the signing date, needed for valid signature + // signature.setSignDate(signer.getSigningDate()); + + signer.setPDSignature(signature); + + int signatureSize = 0x1000; + try { + final String reservedSignatureSizeString = signatureProfileSettings.getValue(SIG_RESERVED_SIZE); + if (reservedSignatureSizeString != null) { + signatureSize = Integer.parseInt(reservedSignatureSizeString); + } + logger.debug("Reserving {} bytes for signature", signatureSize); + } catch (final NumberFormatException e) { + logger.warn("Invalid configuration value: {} should be a number using 0x1000", SIG_RESERVED_SIZE); + } + options.setPreferredSignatureSize(signatureSize); + + if (signatureProfileSettings.isPDFA() || signatureProfileSettings.isPDFA3()) { + pdfaVersion = getPDFAVersion(doc); + signatureProfileSettings.setPDFAVersion(pdfaVersion); + } + + // Is visible Signature + if (requestedSignature.isVisual()) { + logger.info("Creating visual siganture block"); + + final SignatureProfileConfiguration signatureProfileConfiguration = pdfObject.getStatus() + .getSignatureProfileConfiguration(requestedSignature.getSignatureProfileID()); + + if (tablePos == null) { + // ================================================================ + // PositioningStage (visual) -> find position or use + // fixed + // position + + final String posString = pdfObject.getStatus().getSignParamter().getSignaturePosition(); + + TablePos signaturePos = null; + + final String signaturePosString = signatureProfileConfiguration.getDefaultPositioning(); + + if (signaturePosString != null) { + logger.debug("using signature Positioning: " + signaturePos); + signaturePos = new TablePos(signaturePosString); + } + + logger.debug("using Positioning: " + posString); + + if (posString != null) { + // Merge Signature Position + tablePos = new TablePos(posString, signaturePos); + } else { + // Fallback to signature Position! + tablePos = signaturePos; + } + + if (tablePos == null) { + // Last Fallback default position + tablePos = new TablePos(); + } + } - if (tablePos == null) { - // ================================================================ - // PositioningStage (visual) -> find position or use - // fixed - // position + // Legacy Modes not supported with pdfbox2 anymore +// boolean legacy32Position = signatureProfileConfiguration.getLegacy32Positioning(); +// boolean legacy40Position = signatureProfileConfiguration.getLegacy40Positioning(); - String posString = pdfObject.getStatus().getSignParamter().getSignaturePosition(); + // create Table describtion + + final Table main = TableFactory.createSigTable(signatureProfileSettings, MAIN, pdfObject.getStatus(), + requestedSignature); + + final IPDFStamper stamper = StamperFactory.createDefaultStamper(pdfObject.getStatus().getSettings()); + + final IPDFVisualObject visualObject = stamper.createVisualPDFObject(pdfObject, main); + + /* + * PDDocument originalDocument = PDDocument .load(new + * ByteArrayInputStream(pdfObject.getStatus() + * .getPdfObject().getOriginalDocument())); + */ + + final PositioningInstruction positioningInstruction = Positioning.determineTablePositioning(tablePos, + "", + doc, visualObject, pdfObject.getStatus().getSettings()); + + logger.debug("Positioning: {}", positioningInstruction.toString()); + + if (!isAdobeSigForm) { + if (positioningInstruction.isMakeNewPage()) { + final int last = doc.getNumberOfPages() - 1; + final PDDocumentCatalog root = doc.getDocumentCatalog(); + final PDPage lastPage = root.getPages().get(last); + root.getPages().getCOSObject().setNeedToBeUpdated(true); + final PDPage p = new PDPage(lastPage.getMediaBox()); + p.setResources(new PDResources()); + p.setRotation(lastPage.getRotation()); + doc.addPage(p); + } + + // handle rotated page + final int targetPageNumber = positioningInstruction.getPage(); + logger.debug("Target Page: " + targetPageNumber); + final PDPage targetPage = doc.getPages().get(targetPageNumber - 1); + final int rot = targetPage.getRotation(); + logger.debug("Page rotation: " + rot); + logger.debug("resulting Sign rotation: " + positioningInstruction.getRotation()); + + final SignaturePositionImpl position = new SignaturePositionImpl(); + position.setX(positioningInstruction.getX()); + position.setY(positioningInstruction.getY()); + position.setPage(positioningInstruction.getPage()); + position.setHeight(visualObject.getHeight()); + position.setWidth(visualObject.getWidth()); + requestedSignature.setSignaturePosition(position); + } - TablePos signaturePos = null; + properties = new PDFAsVisualSignatureProperties(pdfObject.getStatus().getSettings(), pdfObject, + (PdfBoxVisualObject) visualObject, positioningInstruction, signatureProfileSettings); + + properties.buildSignature(); + + /* + * ByteArrayOutputStream sigbos = new ByteArrayOutputStream(); + * sigbos.write(StreamUtils.inputStreamToByteArray (properties + * .getVisibleSignature())); sigbos.close(); + */ + + /* + * if (signaturePlaceholderData != null) { + * + * InputStream fis = + * PADESPDFBOXSigner.class.getResourceAsStream("/placeholder/empty.jpg"); + * PDImageXObject img = JPEGFactory.createFromStream(doc, fis); + * + * img.getCOSObject().setNeedToBeUpdated(true); // PDDocumentCatalog root = + * doc.getDocumentCatalog(); // PDPageNode rootPages = root.getPages(); // + * List<PDPage> kids = new ArrayList<PDPage>(); // rootPages.getAllKids(kids); + * int pageNumber = positioningInstruction.getPage(); PDPage page = + * doc.getPages().get(pageNumber - 1); + * + * logger.info("Placeholder name: " + + * signaturePlaceholderData.getPlaceholderName()); COSDictionary + * xobjectsDictionary = (COSDictionary) page.getResources().getCOSObject() + * .getDictionaryObject(COSName.XOBJECT); + * + * + * xobjectsDictionary.setItem(signaturePlaceholderData.getPlaceholderName(), + * img); xobjectsDictionary.setNeedToBeUpdated(true); + * page.getResources().getCOSObject().setNeedToBeUpdated(true); + * logger.info("Placeholder name: " + + * signaturePlaceholderData.getPlaceholderName()); } + */ + + if (signatureProfileSettings.isPDFA() || signatureProfileSettings.isPDFA3()) { + final PDDocumentCatalog root = doc.getDocumentCatalog(); + final COSBase base = root.getCOSObject().getItem(COSName.OUTPUT_INTENTS); + + InputStream colorProfile = null; + // colorProfile = this.getClass().getResourceAsStream("/icm/sRGB.icm"); + colorProfile = this.getClass().getResourceAsStream("/icm/sRGB Color Space Profile.icm"); + // Set output intents for PDF/A conformity// + try { + final PDOutputIntent intent = new PDOutputIntent(doc, colorProfile); + + intent.setInfo("sRGB IEC61966-2.1"); + intent.setOutputCondition("sRGB IEC61966-2.1"); + intent.setOutputConditionIdentifier("sRGB IEC61966-2.1"); + intent.setRegistryName("http://www.color.org"); + final List<PDOutputIntent> oi = new ArrayList<>(); + oi.add(intent); + root.setOutputIntents(oi); + root.getCOSObject().setNeedToBeUpdated(true); + + logger.info("added Output Intent"); + } catch (final Throwable e) { + e.printStackTrace(); + throw new PdfAsException("Failed to add Output Intent", e); + } finally { + IOUtils.closeQuietly(colorProfile); + } + } + options.setPage(positioningInstruction.getPage() - 1); + options.setVisualSignature(properties.getVisibleSignature()); + } - String signaturePosString = signatureProfileConfiguration.getDefaultPositioning(); + visualSignatureDocumentGuard = options.getVisualSignature(); - if (signaturePosString != null) { - logger.debug("using signature Positioning: " + signaturePos); - signaturePos = new TablePos(signaturePosString); - } + doc.addSignature(signature, signer, options); - logger.debug("using Positioning: " + posString); + if (sigFieldName == null) { + sigFieldName = "PDF-AS Signatur"; + } + final int count = PdfBoxUtils.countSignatures(doc, sigFieldName); - if (posString != null) { - // Merge Signature Position - tablePos = new TablePos(posString, signaturePos); - } else { - // Fallback to signature Position! - tablePos = signaturePos; - } + sigFieldName = sigFieldName + count; - if (tablePos == null) { - // Last Fallback default position - tablePos = new TablePos(); - } - } + final PDAcroForm acroFormm = doc.getDocumentCatalog().getAcroForm(); - //Legacy Modes not supported with pdfbox2 anymore -// boolean legacy32Position = signatureProfileConfiguration.getLegacy32Positioning(); -// boolean legacy40Position = signatureProfileConfiguration.getLegacy40Positioning(); + // PDStructureTreeRoot pdstRoot = + // doc.getDocumentCatalog().getStructureTreeRoot(); + // COSDictionary dic = + // doc.getDocumentCatalog().getCOSDictionary(); + // PDStructureElement el = new PDStructureElement("Widget", + // pdstRoot); - // create Table describtion - - - Table main = TableFactory.createSigTable(signatureProfileSettings, MAIN, pdfObject.getStatus(), - requestedSignature); - - IPDFStamper stamper = StamperFactory.createDefaultStamper(pdfObject.getStatus().getSettings()); - - IPDFVisualObject visualObject = stamper.createVisualPDFObject(pdfObject, main); - - /* - * PDDocument originalDocument = PDDocument .load(new - * ByteArrayInputStream(pdfObject.getStatus() - * .getPdfObject().getOriginalDocument())); - */ - - PositioningInstruction positioningInstruction = Positioning.determineTablePositioning(tablePos, "", - doc, visualObject, pdfObject.getStatus().getSettings()); - - logger.debug("Positioning: {}", positioningInstruction.toString()); - - if(!isAdobeSigForm) { - if (positioningInstruction.isMakeNewPage()) { - int last = doc.getNumberOfPages() - 1; - PDDocumentCatalog root = doc.getDocumentCatalog(); - PDPage lastPage = root.getPages().get(last); - root.getPages().getCOSObject().setNeedToBeUpdated(true); - PDPage p = new PDPage(lastPage.getMediaBox()); - p.setResources(new PDResources()); - p.setRotation(lastPage.getRotation()); - doc.addPage(p); - } - - // handle rotated page - int targetPageNumber = positioningInstruction.getPage(); - logger.debug("Target Page: " + targetPageNumber); - PDPage targetPage = doc.getPages().get(targetPageNumber - 1); - int rot = targetPage.getRotation(); - logger.debug("Page rotation: " + rot); - logger.debug("resulting Sign rotation: " + positioningInstruction.getRotation()); - - SignaturePositionImpl position = new SignaturePositionImpl(); - position.setX(positioningInstruction.getX()); - position.setY(positioningInstruction.getY()); - position.setPage(positioningInstruction.getPage()); - position.setHeight(visualObject.getHeight()); - position.setWidth(visualObject.getWidth()); - requestedSignature.setSignaturePosition(position); - } - - properties = new PDFAsVisualSignatureProperties(pdfObject.getStatus().getSettings(), pdfObject, - (PdfBoxVisualObject) visualObject, positioningInstruction, signatureProfileSettings); - - properties.buildSignature(); - - /* - * ByteArrayOutputStream sigbos = new - * ByteArrayOutputStream(); - * sigbos.write(StreamUtils.inputStreamToByteArray - * (properties .getVisibleSignature())); sigbos.close(); - */ - - /*if (signaturePlaceholderData != null) { - - InputStream fis = PADESPDFBOXSigner.class.getResourceAsStream("/placeholder/empty.jpg"); - PDImageXObject img = JPEGFactory.createFromStream(doc, fis); - - img.getCOSObject().setNeedToBeUpdated(true); - // PDDocumentCatalog root = doc.getDocumentCatalog(); - // PDPageNode rootPages = root.getPages(); - // List<PDPage> kids = new ArrayList<PDPage>(); - // rootPages.getAllKids(kids); - int pageNumber = positioningInstruction.getPage(); - PDPage page = doc.getPages().get(pageNumber - 1); - - logger.info("Placeholder name: " + signaturePlaceholderData.getPlaceholderName()); - COSDictionary xobjectsDictionary = (COSDictionary) page.getResources().getCOSObject() - .getDictionaryObject(COSName.XOBJECT); - - - xobjectsDictionary.setItem(signaturePlaceholderData.getPlaceholderName(), img); - xobjectsDictionary.setNeedToBeUpdated(true); - page.getResources().getCOSObject().setNeedToBeUpdated(true); - logger.info("Placeholder name: " + signaturePlaceholderData.getPlaceholderName()); - }*/ - - if (signatureProfileSettings.isPDFA() || signatureProfileSettings.isPDFA3()) { - PDDocumentCatalog root = doc.getDocumentCatalog(); - COSBase base = root.getCOSObject().getItem(COSName.OUTPUT_INTENTS); - - InputStream colorProfile = null; - //colorProfile = this.getClass().getResourceAsStream("/icm/sRGB.icm"); - colorProfile = this.getClass().getResourceAsStream("/icm/sRGB Color Space Profile.icm"); - //Set output intents for PDF/A conformity// - try { - PDOutputIntent intent = new PDOutputIntent(doc, colorProfile); - - intent.setInfo("sRGB IEC61966-2.1"); - intent.setOutputCondition("sRGB IEC61966-2.1"); - intent.setOutputConditionIdentifier("sRGB IEC61966-2.1"); - intent.setRegistryName("http://www.color.org"); - List<PDOutputIntent> oi = new ArrayList<PDOutputIntent>(); - oi.add(intent); - root.setOutputIntents(oi); - root.getCOSObject().setNeedToBeUpdated(true); - - logger.info("added Output Intent"); - } catch (Throwable e) { - e.printStackTrace(); - throw new PdfAsException("Failed to add Output Intent", e); - } - finally { - IOUtils.closeQuietly(colorProfile); - } - } - options.setPage(positioningInstruction.getPage()-1); - options.setVisualSignature(properties.getVisibleSignature()); - } + // this is not used for Adobe signature fields + if (!isAdobeSigForm) { + PDSignatureField signatureField = null; + if (acroFormm != null) { + @SuppressWarnings("unchecked") + final List<PDField> fields = acroFormm.getFields(); - visualSignatureDocumentGuard = options.getVisualSignature(); - - doc.addSignature(signature, signer, options); - - if (sigFieldName == null) { - sigFieldName = "PDF-AS Signatur"; - } - int count = PdfBoxUtils.countSignatures(doc, sigFieldName); - - sigFieldName = sigFieldName + count; - - PDAcroForm acroFormm = doc.getDocumentCatalog().getAcroForm(); - - // PDStructureTreeRoot pdstRoot = - // doc.getDocumentCatalog().getStructureTreeRoot(); - // COSDictionary dic = - // doc.getDocumentCatalog().getCOSDictionary(); - // PDStructureElement el = new PDStructureElement("Widget", - // pdstRoot); - - //this is not used for Adobe signature fields - if(!isAdobeSigForm) { - PDSignatureField signatureField = null; - if (acroFormm != null) { - @SuppressWarnings("unchecked") - List<PDField> fields = acroFormm.getFields(); - - if (fields != null) { - for (PDField pdField : fields) { - if (pdField != null) { - if (pdField instanceof PDSignatureField) { - PDSignatureField tmpSigField = (PDSignatureField) pdField; - - if (tmpSigField.getSignature() != null - && tmpSigField.getSignature().getCOSObject() != null) { - if (tmpSigField.getSignature().getCOSObject() - .equals(signature.getCOSObject())) { - signatureField = (PDSignatureField) pdField; - - } - } - } - } - } - } else { - logger.warn("Failed to name Signature Field! [Cannot find Field list in acroForm!]"); - } - - if (signatureField != null) { - signatureField.setPartialName(sigFieldName); - } - if (properties != null) { - signatureField.setAlternateFieldName(properties.getAlternativeTableCaption()); - } else { - signatureField.setAlternateFieldName(sigFieldName); - } - } else { - logger.warn("Failed to name Signature Field! [Cannot find acroForm!]"); - } - } - - PDSignatureField signatureField = null; - PDAcroForm acroForm = doc.getDocumentCatalog().getAcroForm(); - if (acroForm != null) { - signatureField = (PDSignatureField) acroForm.getField(sigFieldName); - } - - // PDF-UA - logger.info("Adding pdf/ua content."); - try { - PDDocumentCatalog root = doc.getDocumentCatalog(); - PDStructureTreeRoot structureTreeRoot = root.getStructureTreeRoot(); - if (structureTreeRoot != null) { - logger.info("Tree Root: {}", structureTreeRoot.toString()); - List<Object> kids = structureTreeRoot.getKids(); - - if (kids == null) { - logger.info("No kid-elements in structure tree Root, maybe not PDF/UA document"); - } - - PDStructureElement docElement = null; - for (Object k : kids) { - if (k instanceof PDStructureElement) { - docElement = (PDStructureElement) k; - break; - - } - } - - PDStructureElement sigBlock = new PDStructureElement("Form", docElement); - - // create object dictionary and add as child element - COSDictionary objectDic = new COSDictionary(); - objectDic.setName("Type", "OBJR"); - - objectDic.setItem("Pg", signatureField.getWidget().getPage()); - objectDic.setItem("Obj", signatureField.getWidget()); - - List<Object> l = new ArrayList<Object>(); - l.add(objectDic); - sigBlock.setKids(l); - sigBlock.setPage(signatureField.getWidget().getPage()); - - - sigBlock.setTitle("Signature Table"); - sigBlock.setParent(docElement); - docElement.appendKid(sigBlock); - - // Create and add Attribute dictionary to mitigate PAC - // warning - COSDictionary sigBlockDic = (COSDictionary) sigBlock.getCOSObject(); - COSDictionary sub = new COSDictionary(); - - sub.setName("O", "Layout"); - sub.setName("Placement", "Block"); - sigBlockDic.setItem(COSName.A, sub); - sigBlockDic.setNeedToBeUpdated(true); - - // Modify number tree - PDNumberTreeNode ntn = structureTreeRoot.getParentTree(); - if (ntn == null) { - ntn = new PDNumberTreeNode(objectDic, null); - logger.info("No number-tree-node found!"); - } - - COSArray ntnKids = (COSArray) ntn.getCOSObject().getDictionaryObject(COSName.KIDS); - COSArray ntnNumbers = (COSArray) ntn.getCOSObject().getDictionaryObject(COSName.NUMS); - - int parentTreeNextKey = getParentTreeNextKey(structureTreeRoot); - - if(ntnNumbers == null && ntnKids != null){//no number array, so continue with the kids array - //create dictionary with limits and nums array - COSDictionary pTreeEntry = new COSDictionary(); - COSArray limitsArray = new COSArray(); - //limits for exact one entry - limitsArray.add(COSInteger.get(parentTreeNextKey)); - limitsArray.add(COSInteger.get(parentTreeNextKey)); - - COSArray numsArray = new COSArray(); - numsArray.add(COSInteger.get(parentTreeNextKey)); - numsArray.add(sigBlock); - - pTreeEntry.setItem(COSName.NUMS, numsArray); - pTreeEntry.setItem(COSName.LIMITS, limitsArray); - - PDNumberTreeNode newKidsElement = new PDNumberTreeNode(pTreeEntry, PDNumberTreeNode.class); - - ntnKids.add(newKidsElement); - ntnKids.setNeedToBeUpdated(true); - - - }else if(ntnNumbers != null && ntnKids == null){ - - int arrindex = ntnNumbers.size(); - - ntnNumbers.add(arrindex, COSInteger.get(parentTreeNextKey)); - ntnNumbers.add(arrindex + 1, sigBlock.getCOSObject()); - - ntnNumbers.setNeedToBeUpdated(true); - - structureTreeRoot.setParentTree(ntn); - - }else if(ntnNumbers == null && ntnKids == null){ - //document is not pdfua conform before signature creation - throw new PdfAsException("error.pdf.sig.pdfua.1"); - }else{ - //this is not allowed - throw new PdfAsException("error.pdf.sig.pdfua.1"); - } - - // set StructureParent for signature field annotation - signatureField.getWidget().setStructParent(parentTreeNextKey); - - //Increase the next Key value in the structure tree root - structureTreeRoot.setParentTreeNextKey(parentTreeNextKey+1); - - // add the Tabs /S Element for Tabbing through annots - PDPage p = signatureField.getWidget().getPage(); - p.getCOSObject().setName("Tabs", "S"); - p.getCOSObject().setNeedToBeUpdated(true); - - //check alternative signature field name - if (signatureField != null) { - if(signatureField.getAlternateFieldName().equals("")) - signatureField.setAlternateFieldName(sigFieldName); - } - - ntn.getCOSObject().setNeedToBeUpdated(true); - sigBlock.getCOSObject().setNeedToBeUpdated(true); - structureTreeRoot.getCOSObject().setNeedToBeUpdated(true); - objectDic.setNeedToBeUpdated(true); - docElement.getCOSObject().setNeedToBeUpdated(true); - } - } catch (Throwable e) { - if (signatureProfileSettings.isPDFUA() == true) { - logger.error("Could not create PDF-UA conform document!"); - throw new PdfAsException("error.pdf.sig.pdfua.1", e); - } else { - logger.info("Could not create PDF-UA conform signature"); - } - } - - try { - ByteArrayOutputStream bos = new ByteArrayOutputStream(); - synchronized (doc) { - doc.saveIncremental(bos); - byte[] outputDocument = bos.toByteArray(); - pdfObject.setSignedDocument(outputDocument); - } - /* Check if resulting pdf is PDF-A conform */ - if (signatureProfileSettings.isPDFA()) { - runPDFAPreflight(new ByteArrayDataSource(pdfObject.getSignedDocument())); - } + if (fields != null) { + for (final PDField pdField : fields) { + if (pdField != null) { + if (pdField instanceof PDSignatureField) { + final PDSignatureField tmpSigField = (PDSignatureField) pdField; - } catch (IOException e1) { - e1.printStackTrace(); - } + if (tmpSigField.getSignature() != null + && tmpSigField.getSignature().getCOSObject() != null) { + if (tmpSigField.getSignature().getCOSObject() + .equals(signature.getCOSObject())) { + signatureField = (PDSignatureField) pdField; - finally { - if (options != null) { - if (options.getVisualSignature() != null) { - options.getVisualSignature().close(); } + } } + } } + } else { + logger.warn("Failed to name Signature Field! [Cannot find Field list in acroForm!]"); + } + + if (signatureField != null) { + signatureField.setPartialName(sigFieldName); + } + if (properties != null) { + signatureField.setAlternateFieldName(properties.getAlternativeTableCaption()); + } else { + signatureField.setAlternateFieldName(sigFieldName); + } + } else { + logger.warn("Failed to name Signature Field! [Cannot find acroForm!]"); + } + } + + PDSignatureField signatureField = null; + final PDAcroForm acroForm = doc.getDocumentCatalog().getAcroForm(); + if (acroForm != null) { + signatureField = (PDSignatureField) acroForm.getField(sigFieldName); + } + + // PDF-UA + logger.info("Adding pdf/ua content."); + try { + final PDDocumentCatalog root = doc.getDocumentCatalog(); + final PDStructureTreeRoot structureTreeRoot = root.getStructureTreeRoot(); + if (structureTreeRoot != null) { + logger.info("Tree Root: {}", structureTreeRoot.toString()); + final List<Object> kids = structureTreeRoot.getKids(); + + if (kids == null) { + logger.info("No kid-elements in structure tree Root, maybe not PDF/UA document"); + } + + PDStructureElement docElement = null; + for (final Object k : kids) { + if (k instanceof PDStructureElement) { + docElement = (PDStructureElement) k; + break; - System.gc(); - } catch (IOException e) { - logger.warn(MessageResolver.resolveMessage("error.pdf.sig.01"), e); - throw new PdfAsException("error.pdf.sig.01", e); - } finally { - if (doc != null) { - try { - doc.close(); - //SignaturePlaceholderExtractor.getPlaceholders().clear(); - } catch (IOException e) { - logger.debug("Failed to close COS Doc!", e); - // Ignore - } - } - logger.debug("Signature done!"); - } - } - - private int getParentTreeNextKey(PDStructureTreeRoot structureTreeRoot) throws IOException { - int nextKey = structureTreeRoot.getParentTreeNextKey(); - if (nextKey < 0) { - Map<Integer, COSObjectable> destNumberTreeAsMap = getNumberTreeAsMap(structureTreeRoot.getParentTree()); - if (destNumberTreeAsMap.isEmpty()) { - nextKey = 0; - - } else { - nextKey = Collections.max(destNumberTreeAsMap.keySet()) + 1; - - } - } - - return nextKey; - } - - /** - * Check via PreFlightParser if PDF-Document is a valid PDFA1 - * @param signedDocument: signed Document - * @throws PdfAsException - */ - private void runPDFAPreflight(final DataSource signedDocument) throws PdfAsException { - PreflightDocument document = null; - ValidationResult result = null; - try { - PreflightParser parser = new PreflightParser(signedDocument); - // - // parser.parse(Format.PDF_A1B); - parser.parse(); - document = parser.getPreflightDocument(); - document.validate(); - - document.close(); - result = document.getResult(); - logger.info("PDF-A Validation Result: " + result.isValid()); - - if (result.getErrorsList().size() > 0) { - logger.error("The following validation errors occured for PDF-A validation"); } + } - for (ValidationResult.ValidationError ve : result.getErrorsList()) { - logger.error("\t" + ve.getErrorCode() + ": " + ve.getDetails()); - } + final PDStructureElement sigBlock = new PDStructureElement("Form", docElement); - if (!result.isValid()) { - logger.info("The file is not a valid PDF-A document"); - } + // create object dictionary and add as child element + final COSDictionary objectDic = new COSDictionary(); + objectDic.setName("Type", "OBJR"); - } catch (SyntaxValidationException e) { - logger.error("The file is syntactically invalid.", e); - throw new PdfAsException("Resulting PDF Document is syntactically invalid."); - } catch (ValidationException e) { - logger.error("The file is not a valid PDF-A document.", e); - } catch (IOException e) { - logger.error("An IOException (" + e.getMessage() - + ") occurred, while validating the PDF-A conformance", e); - throw new PdfAsException("Failed validating PDF Document IOException."); - } catch (RuntimeException e) { - logger.debug("An RuntimeException (" + e.getMessage() - + ") occurred, while validating the PDF-A conformance", e); - throw new PdfAsException("Failed validating PDF Document RuntimeException."); - } finally { - if (document != null) { - IOUtils.closeQuietly(document); - } - } - } + objectDic.setItem("Pg", signatureField.getWidget().getPage()); + objectDic.setItem("Obj", signatureField.getWidget()); - @Override - public PDFObject buildPDFObject(OperationStatus operationStatus) { - return new PDFBOXObject(operationStatus); - } + final List<Object> l = new ArrayList<>(); + l.add(objectDic); + sigBlock.setKids(l); + sigBlock.setPage(signatureField.getWidget().getPage()); - @Override - public PDFASSignatureInterface buildSignaturInterface(IPlainSigner signer, SignParameter parameters, - RequestedSignature requestedSignature) { - return new PdfboxSignerWrapper(signer, parameters, requestedSignature); - } + sigBlock.setTitle("Signature Table"); + sigBlock.setParent(docElement); + docElement.appendKid(sigBlock); - @Override - public PDFASSignatureExtractor buildBlindSignaturInterface(X509Certificate certificate, String filter, String subfilter, Calendar date) { - return new SignatureDataExtractor(certificate, filter, subfilter, date); - } + // Create and add Attribute dictionary to mitigate PAC + // warning + final COSDictionary sigBlockDic = sigBlock.getCOSObject(); + final COSDictionary sub = new COSDictionary(); - @Override - public void checkPDFPermissions(PDFObject genericPdfObject) throws PdfAsException { - if (!(genericPdfObject instanceof PDFBOXObject)) { - // tODO: - throw new PdfAsException(); - } + sub.setName("O", "Layout"); + sub.setName("Placement", "Block"); + sigBlockDic.setItem(COSName.A, sub); + sigBlockDic.setNeedToBeUpdated(true); - PDFBOXObject pdfObject = (PDFBOXObject) genericPdfObject; - PdfBoxUtils.checkPDFPermissions(pdfObject.getDocument()); - } + // Modify number tree + PDNumberTreeNode ntn = structureTreeRoot.getParentTree(); + if (ntn == null) { + ntn = new PDNumberTreeNode(objectDic, null); + logger.info("No number-tree-node found!"); + } - @Override - public byte[] rewritePlainSignature(byte[] plainSignature) { - String signature = new COSString(plainSignature).toHexString(); - byte[] pdfSignature = signature.getBytes(); - return pdfSignature; - } + final COSArray ntnKids = (COSArray) ntn.getCOSObject().getDictionaryObject(COSName.KIDS); + final COSArray ntnNumbers = (COSArray) ntn.getCOSObject().getDictionaryObject(COSName.NUMS); - @Override - public Image generateVisibleSignaturePreview(SignParameter parameter, java.security.cert.X509Certificate cert, - int resolution, OperationStatus status, RequestedSignature requestedSignature) throws PDFASError { - try { + final int parentTreeNextKey = getParentTreeNextKey(structureTreeRoot); - PDFBOXObject pdfObject = (PDFBOXObject) status.getPdfObject(); - PDDocument origDoc = new PDDocument(); + if (ntnNumbers == null && ntnKids != null) {// no number array, so continue with the kids array + // create dictionary with limits and nums array + final COSDictionary pTreeEntry = new COSDictionary(); + final COSArray limitsArray = new COSArray(); + // limits for exact one entry + limitsArray.add(COSInteger.get(parentTreeNextKey)); + limitsArray.add(COSInteger.get(parentTreeNextKey)); - origDoc.addPage(new PDPage(PDRectangle.A4)); - ByteArrayOutputStream baos = new ByteArrayOutputStream(); - origDoc.save(baos); - baos.close(); + final COSArray numsArray = new COSArray(); + numsArray.add(COSInteger.get(parentTreeNextKey)); + numsArray.add(sigBlock); - pdfObject.setOriginalDocument(new ByteArrayDataSource(baos.toByteArray())); + pTreeEntry.setItem(COSName.NUMS, numsArray); + pTreeEntry.setItem(COSName.LIMITS, limitsArray); - SignatureProfileSettings signatureProfileSettings = TableFactory - .createProfile(requestedSignature.getSignatureProfileID(), pdfObject.getStatus().getSettings()); + final PDNumberTreeNode newKidsElement = new PDNumberTreeNode(pTreeEntry, PDNumberTreeNode.class); - // create Table describtion - Table main = TableFactory.createSigTable(signatureProfileSettings, MAIN, pdfObject.getStatus(), - requestedSignature); + ntnKids.add(newKidsElement); + ntnKids.setNeedToBeUpdated(true); - IPDFStamper stamper = StamperFactory.createDefaultStamper(pdfObject.getStatus().getSettings()); + } else if (ntnNumbers != null && ntnKids == null) { - IPDFVisualObject visualObject = stamper.createVisualPDFObject(pdfObject, main); + final int arrindex = ntnNumbers.size(); - SignatureProfileConfiguration signatureProfileConfiguration = pdfObject.getStatus() - .getSignatureProfileConfiguration(requestedSignature.getSignatureProfileID()); + ntnNumbers.add(arrindex, COSInteger.get(parentTreeNextKey)); + ntnNumbers.add(arrindex + 1, sigBlock.getCOSObject()); - String signaturePosString = signatureProfileConfiguration.getDefaultPositioning(); - PositioningInstruction positioningInstruction; - if (signaturePosString != null) { - positioningInstruction = Positioning.determineTablePositioning(new TablePos(signaturePosString), "", - origDoc, visualObject, pdfObject.getStatus().getSettings()); - } else { - positioningInstruction = Positioning.determineTablePositioning(new TablePos(), "", origDoc, - visualObject, pdfObject.getStatus().getSettings()); - } + ntnNumbers.setNeedToBeUpdated(true); - origDoc.close(); + structureTreeRoot.setParentTree(ntn); - SignaturePositionImpl position = new SignaturePositionImpl(); - position.setX(positioningInstruction.getX()); - position.setY(positioningInstruction.getY()); - position.setPage(positioningInstruction.getPage()); - position.setHeight(visualObject.getHeight()); - position.setWidth(visualObject.getWidth()); + } else if (ntnNumbers == null && ntnKids == null) { + // document is not pdfua conform before signature creation + throw new PdfAsException("error.pdf.sig.pdfua.1"); + } else { + // this is not allowed + throw new PdfAsException("error.pdf.sig.pdfua.1"); + } - requestedSignature.setSignaturePosition(position); + // set StructureParent for signature field annotation + signatureField.getWidget().setStructParent(parentTreeNextKey); - PDFAsVisualSignatureProperties properties = new PDFAsVisualSignatureProperties( - pdfObject.getStatus().getSettings(), pdfObject, (PdfBoxVisualObject) visualObject, - positioningInstruction, signatureProfileSettings); + // Increase the next Key value in the structure tree root + structureTreeRoot.setParentTreeNextKey(parentTreeNextKey + 1); - properties.buildSignature(); - PDDocument visualDoc; - synchronized (PDDocument.class) { - visualDoc = PDDocument.load(properties.getVisibleSignature()); - } - // PDPageable pageable = new PDPageable(visualDoc); + // add the Tabs /S Element for Tabbing through annots + final PDPage p = signatureField.getWidget().getPage(); + p.getCOSObject().setName("Tabs", "S"); + p.getCOSObject().setNeedToBeUpdated(true); - PDPage firstPage = visualDoc.getDocumentCatalog().getPages().get(0); + // check alternative signature field name + if (signatureField != null) { + if (signatureField.getAlternateFieldName().equals("")) { + signatureField.setAlternateFieldName(sigFieldName); + } + } - float stdRes = 72; - float targetRes = resolution; - float factor = targetRes / stdRes; + ntn.getCOSObject().setNeedToBeUpdated(true); + sigBlock.getCOSObject().setNeedToBeUpdated(true); + structureTreeRoot.getCOSObject().setNeedToBeUpdated(true); + objectDic.setNeedToBeUpdated(true); + docElement.getCOSObject().setNeedToBeUpdated(true); + } + } catch (final Throwable e) { + if (signatureProfileSettings.isPDFUA() == true) { + logger.error("Could not create PDF-UA conform document!"); + throw new PdfAsException("error.pdf.sig.pdfua.1", e); + } else { + logger.info("Could not create PDF-UA conform signature"); + } + } + + try { + final ByteArrayOutputStream bos = new ByteArrayOutputStream(); + synchronized (doc) { + doc.saveIncremental(bos); + final byte[] outputDocument = bos.toByteArray(); + pdfObject.setSignedDocument(outputDocument); + } + /* Check if resulting pdf is PDF-A conform */ + if (signatureProfileSettings.isPDFA()) { + runPDFAPreflight(new ByteArrayDataSource(pdfObject.getSignedDocument())); + } + } catch (final IOException e1) { + e1.printStackTrace(); + } - int targetPageNumber = 0;//TODO: is this always the case - PDFRenderer pdfRenderer = new PDFRenderer(visualDoc); - BufferedImage outputImage = pdfRenderer.renderImageWithDPI(targetPageNumber, targetRes, ImageType.ARGB); + finally { + if (options != null) { + if (options.getVisualSignature() != null) { + options.getVisualSignature().close(); + } + } + } + + System.gc(); + logger.debug("Signature done!"); + + } catch (final IOException e) { + logger.warn(MessageResolver.resolveMessage("error.pdf.sig.01"), e); + throw new PdfAsException("error.pdf.sig.01", e); + + } finally { + if (doc != null) { + try { + doc.close(); + // SignaturePlaceholderExtractor.getPlaceholders().clear(); + } catch (final IOException e) { + logger.debug("Failed to close COS Doc!", e); + // Ignore + } + } + } + } - //BufferedImage outputImage = firstPage.convertToImage(BufferedImage.TYPE_4BYTE_ABGR, (int) targetRes); + private int getParentTreeNextKey(PDStructureTreeRoot structureTreeRoot) throws IOException { + int nextKey = structureTreeRoot.getParentTreeNextKey(); + if (nextKey < 0) { + final Map<Integer, COSObjectable> destNumberTreeAsMap = getNumberTreeAsMap(structureTreeRoot + .getParentTree()); + if (destNumberTreeAsMap.isEmpty()) { + nextKey = 0; - BufferedImage cutOut = new BufferedImage((int) (position.getWidth() * factor), - (int) (position.getHeight() * factor), BufferedImage.TYPE_4BYTE_ABGR); + } else { + nextKey = Collections.max(destNumberTreeAsMap.keySet()) + 1; - Graphics2D graphics = (Graphics2D) cutOut.getGraphics(); + } + } - graphics.drawImage(outputImage, 0, 0, cutOut.getWidth(), cutOut.getHeight(), (int) (1 * factor), - (int) (outputImage.getHeight() - ((position.getHeight() + 1) * factor)), - (int) ((1 + position.getWidth()) * factor), (int) (outputImage.getHeight() - - ((position.getHeight() + 1) * factor) + (position.getHeight() * factor)), - null); - return cutOut; - } catch (PdfAsException e) { - logger.warn("PDF-AS Exception", e); - throw ErrorExtractor.searchPdfAsError(e, status); - } catch (Throwable e) { - logger.warn("Unexpected Throwable Exception", e); - throw ErrorExtractor.searchPdfAsError(e, status); - } + return nextKey; + } + + /** + * Check via PreFlightParser if PDF-Document is a valid PDFA1 + * + * @param signedDocument: signed Document + * @throws PdfAsException + */ + private void runPDFAPreflight(final DataSource signedDocument) throws PdfAsException { + PreflightDocument document = null; + ValidationResult result = null; + try { + final PreflightParser parser = new PreflightParser(signedDocument); + // + // parser.parse(Format.PDF_A1B); + parser.parse(); + document = parser.getPreflightDocument(); + document.validate(); + + document.close(); + result = document.getResult(); + logger.info("PDF-A Validation Result: " + result.isValid()); + + if (result.getErrorsList().size() > 0) { + logger.error("The following validation errors occured for PDF-A validation"); + } + + for (final ValidationResult.ValidationError ve : result.getErrorsList()) { + logger.error("\t" + ve.getErrorCode() + ": " + ve.getDetails()); + } + + if (!result.isValid()) { + logger.info("The file is not a valid PDF-A document"); + } + + } catch (final SyntaxValidationException e) { + logger.error("The file is syntactically invalid.", e); + throw new PdfAsException("Resulting PDF Document is syntactically invalid."); + } catch (final ValidationException e) { + logger.error("The file is not a valid PDF-A document.", e); + } catch (final IOException e) { + logger.error("An IOException (" + e.getMessage() + + ") occurred, while validating the PDF-A conformance", e); + throw new PdfAsException("Failed validating PDF Document IOException."); + } catch (final RuntimeException e) { + logger.debug("An RuntimeException (" + e.getMessage() + + ") occurred, while validating the PDF-A conformance", e); + throw new PdfAsException("Failed validating PDF Document RuntimeException."); + } finally { + if (document != null) { + IOUtils.closeQuietly(document); + } + } + } + + @Override + public PDFObject buildPDFObject(OperationStatus operationStatus) { + return new PDFBOXObject(operationStatus); + } + + @Override + public PDFASSignatureInterface buildSignaturInterface(IPlainSigner signer, SignParameter parameters, + RequestedSignature requestedSignature) { + return new PdfboxSignerWrapper(signer, parameters, requestedSignature); + } + + @Override + public PDFASSignatureExtractor buildBlindSignaturInterface(X509Certificate certificate, String filter, + String subfilter, Calendar date) { + return new SignatureDataExtractor(certificate, filter, subfilter, date); + } + + @Override + public void checkPDFPermissions(PDFObject genericPdfObject) throws PdfAsException { + if (!(genericPdfObject instanceof PDFBOXObject)) { + // tODO: + throw new PdfAsException(); } - private String getPDFAVersion(PDDocument doc) { - try { - PDDocumentCatalog cat = doc.getDocumentCatalog(); - PDMetadata metadata = cat.getMetadata(); - - if (metadata != null) { - DomXmpParser xmpParser = new DomXmpParser(); - XMPMetadata xmpMetadata = xmpParser.parse(metadata.exportXMPMetadata()); - if (xmpMetadata != null) { - PDFAIdentificationSchema pdfaIdentificationSchema = xmpMetadata.getPDFIdentificationSchema(); - if (pdfaIdentificationSchema != null) { - Integer pdfaversion = pdfaIdentificationSchema.getPart(); - String conformance = pdfaIdentificationSchema.getConformance(); - logger.info("Detected PDF/A Version: {} - {}", pdfaversion, conformance); - - if (pdfaversion != null) { - return String.valueOf(pdfaversion); - } - } - } + final PDFBOXObject pdfObject = (PDFBOXObject) genericPdfObject; + PdfBoxUtils.checkPDFPermissions(pdfObject.getDocument()); + } + + @Override + public byte[] rewritePlainSignature(byte[] plainSignature) { + final String signature = new COSString(plainSignature).toHexString(); + final byte[] pdfSignature = signature.getBytes(); + return pdfSignature; + } + + @Override + public Image generateVisibleSignaturePreview(SignParameter parameter, + java.security.cert.X509Certificate cert, + int resolution, OperationStatus status, RequestedSignature requestedSignature) throws PDFASError { + try { + + final PDFBOXObject pdfObject = (PDFBOXObject) status.getPdfObject(); + final PDDocument origDoc = new PDDocument(); + + origDoc.addPage(new PDPage(PDRectangle.A4)); + final ByteArrayOutputStream baos = new ByteArrayOutputStream(); + origDoc.save(baos); + baos.close(); + + pdfObject.setOriginalDocument(new ByteArrayDataSource(baos.toByteArray())); + + final SignatureProfileSettings signatureProfileSettings = TableFactory + .createProfile(requestedSignature.getSignatureProfileID(), pdfObject.getStatus().getSettings()); + + // create Table describtion + final Table main = TableFactory.createSigTable(signatureProfileSettings, MAIN, pdfObject.getStatus(), + requestedSignature); + + final IPDFStamper stamper = StamperFactory.createDefaultStamper(pdfObject.getStatus().getSettings()); + + final IPDFVisualObject visualObject = stamper.createVisualPDFObject(pdfObject, main); + + final SignatureProfileConfiguration signatureProfileConfiguration = pdfObject.getStatus() + .getSignatureProfileConfiguration(requestedSignature.getSignatureProfileID()); + + final String signaturePosString = signatureProfileConfiguration.getDefaultPositioning(); + PositioningInstruction positioningInstruction; + if (signaturePosString != null) { + positioningInstruction = Positioning.determineTablePositioning(new TablePos(signaturePosString), "", + origDoc, visualObject, pdfObject.getStatus().getSettings()); + } else { + positioningInstruction = Positioning.determineTablePositioning(new TablePos(), "", origDoc, + visualObject, pdfObject.getStatus().getSettings()); + } + + origDoc.close(); + + final SignaturePositionImpl position = new SignaturePositionImpl(); + position.setX(positioningInstruction.getX()); + position.setY(positioningInstruction.getY()); + position.setPage(positioningInstruction.getPage()); + position.setHeight(visualObject.getHeight()); + position.setWidth(visualObject.getWidth()); + + requestedSignature.setSignaturePosition(position); + + final PDFAsVisualSignatureProperties properties = new PDFAsVisualSignatureProperties( + pdfObject.getStatus().getSettings(), pdfObject, (PdfBoxVisualObject) visualObject, + positioningInstruction, signatureProfileSettings); + + properties.buildSignature(); + PDDocument visualDoc; + synchronized (PDDocument.class) { + visualDoc = PDDocument.load(properties.getVisibleSignature()); + } + // PDPageable pageable = new PDPageable(visualDoc); + + final PDPage firstPage = visualDoc.getDocumentCatalog().getPages().get(0); + + final float stdRes = 72; + final float targetRes = resolution; + final float factor = targetRes / stdRes; + + final int targetPageNumber = 0;// TODO: is this always the case + PDFRenderer pdfRenderer = new PDFRenderer(visualDoc); + final BufferedImage outputImage = pdfRenderer.renderImageWithDPI(targetPageNumber, targetRes, + ImageType.ARGB); + + visualDoc.close(); + pdfRenderer = null; + + final BufferedImage cutOut = new BufferedImage((int) (position.getWidth() * factor), + (int) (position.getHeight() * factor), BufferedImage.TYPE_4BYTE_ABGR); + + final Graphics2D graphics = (Graphics2D) cutOut.getGraphics(); + + graphics.drawImage(outputImage, 0, 0, cutOut.getWidth(), cutOut.getHeight(), (int) (1 * factor), + (int) (outputImage.getHeight() - (position.getHeight() + 1) * factor), + (int) ((1 + position.getWidth()) * factor), (int) (outputImage.getHeight() + - (position.getHeight() + 1) * factor + position.getHeight() * factor), + null); + return cutOut; + } catch (final PdfAsException e) { + logger.warn("PDF-AS Exception", e); + throw ErrorExtractor.searchPdfAsError(e, status); + } catch (final Throwable e) { + logger.warn("Unexpected Throwable Exception", e); + throw ErrorExtractor.searchPdfAsError(e, status); + } + } + + private String getPDFAVersion(PDDocument doc) { + try { + final PDDocumentCatalog cat = doc.getDocumentCatalog(); + final PDMetadata metadata = cat.getMetadata(); + + if (metadata != null) { + final DomXmpParser xmpParser = new DomXmpParser(); + final XMPMetadata xmpMetadata = xmpParser.parse(metadata.exportXMPMetadata()); + if (xmpMetadata != null) { + final PDFAIdentificationSchema pdfaIdentificationSchema = xmpMetadata.getPDFIdentificationSchema(); + if (pdfaIdentificationSchema != null) { + final Integer pdfaversion = pdfaIdentificationSchema.getPart(); + final String conformance = pdfaIdentificationSchema.getConformance(); + logger.info("Detected PDF/A Version: {} - {}", pdfaversion, conformance); + + if (pdfaversion != null) { + return String.valueOf(pdfaversion); } - } catch (Throwable e) { - logger.warn("Failed to determine PDF/A Version!", e); + } } - return null; + } + } catch (final Throwable e) { + logger.warn("Failed to determine PDF/A Version!", e); } - - // Find an existing signature. - private PDSignature findExistingSignature(PDDocument doc, String sigFieldName) { - PDSignature signature = null; - PDSignatureField signatureField; - PDAcroForm acroForm = doc.getDocumentCatalog().getAcroForm(); - if (acroForm != null) { - signatureField = (PDSignatureField) acroForm.getField(sigFieldName); - if (signatureField != null) { - // retrieve signature dictionary - signature = signatureField.getSignature(); - if (signature == null) { - signature = new PDSignature(); - signatureField.getCOSObject().setItem(COSName.V, signature); - } - else { - throw new IllegalStateException("The signature field " + sigFieldName + " is already signed."); - } - } - } - return signature; - } - - private List<String> existingSignatureLocations(PDDocument doc) { - List<String> existingLocations = new ArrayList<>(); - try { - List <PDSignature> pdSignatureList = doc.getSignatureDictionaries(); - if(pdSignatureList.size() != 0) { - for(PDSignature sig : pdSignatureList) { - existingLocations.add(sig.getLocation()); - } - } - } catch (IOException e) { - e.printStackTrace(); - } - return existingLocations; - } - - //find first placeholder_id - public SignaturePlaceholderData checkAvailablePlaceholders(List<SignaturePlaceholderData> placeholders, List<String> existingPlaceholders) { - SignaturePlaceholderData result = null; - - if(placeholders!=null) { - for(int i = 0; i < placeholders.size(); ++i) { - //take smallest id - if(!existingPlaceholders.contains(placeholders.get(i).getPlaceholderName())) { - SignaturePlaceholderData spd = placeholders.get(i); - if (spd.getId() != null) { - if(result == null) { - result = spd; - } else { - try{ - int currentID = Integer.parseInt(result.getId()); - int testID = Integer.parseInt(spd.getId()); - if(testID < currentID) { - result = spd; - } - }catch(Exception e){ - //fallback to string compare - String currentID = result.getId(); - String testID = spd.getId(); - if(testID.compareToIgnoreCase(currentID) < 0) { - result = spd; - } - } - } - } - } - } - } - return result; - } - - - //find first placeholder_id - public List<SignaturePlaceholderData> listAvailablePlaceholders(List<SignaturePlaceholderData> placeholders, List<String> existingPlaceholders) { - List<SignaturePlaceholderData> result = new ArrayList<>(); - - if(placeholders!=null) { - for(int i = 0; i < placeholders.size(); ++i) { - //take smallest id - if(!existingPlaceholders.contains(placeholders.get(i).getPlaceholderName())) { - result.add(placeholders.get(i)); - } - } - } - return result; - } - - static Map<Integer, COSObjectable> getNumberTreeAsMap(PDNumberTreeNode tree) - throws IOException - { - Map<Integer, COSObjectable> numbers = tree.getNumbers(); - if (numbers == null) - { - numbers = new LinkedHashMap<>(); + return null; + } + + // Find an existing signature. + private PDSignature findExistingSignature(PDDocument doc, String sigFieldName) { + PDSignature signature = null; + PDSignatureField signatureField; + final PDAcroForm acroForm = doc.getDocumentCatalog().getAcroForm(); + if (acroForm != null) { + signatureField = (PDSignatureField) acroForm.getField(sigFieldName); + if (signatureField != null) { + // retrieve signature dictionary + signature = signatureField.getSignature(); + if (signature == null) { + signature = new PDSignature(); + signatureField.getCOSObject().setItem(COSName.V, signature); + } else { + throw new IllegalStateException("The signature field " + sigFieldName + " is already signed."); } - else - { - // must copy because the map is read only - numbers = new LinkedHashMap<>(numbers); + } + } + return signature; + } + + private List<String> existingSignatureLocations(PDDocument doc) { + final List<String> existingLocations = new ArrayList<>(); + try { + final List<PDSignature> pdSignatureList = doc.getSignatureDictionaries(); + if (pdSignatureList.size() != 0) { + for (final PDSignature sig : pdSignatureList) { + existingLocations.add(sig.getLocation()); } - List<PDNumberTreeNode> kids = tree.getKids(); - if (kids != null) - { - for (PDNumberTreeNode kid : kids) - { - numbers.putAll(getNumberTreeAsMap(kid)); + } + } catch (final IOException e) { + e.printStackTrace(); + } + return existingLocations; + } + + // find first placeholder_id + public SignaturePlaceholderData checkAvailablePlaceholders(List<SignaturePlaceholderData> placeholders, + List<String> existingPlaceholders) { + SignaturePlaceholderData result = null; + + if (placeholders != null) { + for (int i = 0; i < placeholders.size(); ++i) { + // take smallest id + if (!existingPlaceholders.contains(placeholders.get(i).getPlaceholderName())) { + final SignaturePlaceholderData spd = placeholders.get(i); + if (spd.getId() != null) { + if (result == null) { + result = spd; + } else { + try { + final int currentID = Integer.parseInt(result.getId()); + final int testID = Integer.parseInt(spd.getId()); + if (testID < currentID) { + result = spd; + } + } catch (final Exception e) { + // fallback to string compare + final String currentID = result.getId(); + final String testID = spd.getId(); + if (testID.compareToIgnoreCase(currentID) < 0) { + result = spd; + } + } } + } } - return numbers; + } } - + return result; + } + + // find first placeholder_id + public List<SignaturePlaceholderData> listAvailablePlaceholders(List<SignaturePlaceholderData> placeholders, + List<String> existingPlaceholders) { + final List<SignaturePlaceholderData> result = new ArrayList<>(); + + if (placeholders != null) { + for (int i = 0; i < placeholders.size(); ++i) { + // take smallest id + if (!existingPlaceholders.contains(placeholders.get(i).getPlaceholderName())) { + result.add(placeholders.get(i)); + } + } + } + return result; + } + + static Map<Integer, COSObjectable> getNumberTreeAsMap(PDNumberTreeNode tree) + throws IOException { + Map<Integer, COSObjectable> numbers = tree.getNumbers(); + if (numbers == null) { + numbers = new LinkedHashMap<>(); + } else { + // must copy because the map is read only + numbers = new LinkedHashMap<>(numbers); + } + final List<PDNumberTreeNode> kids = tree.getKids(); + if (kids != null) { + for (final PDNumberTreeNode kid : kids) { + numbers.putAll(getNumberTreeAsMap(kid)); + } + } + return numbers; + } + }
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