1 files changed, 0 insertions, 371 deletions
diff --git a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/placeholder/SignaturePlaceholderExtractor.java b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/placeholder/SignaturePlaceholderExtractor.java
deleted file mode 100644
index 93162bd3..00000000
--- a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/placeholder/SignaturePlaceholderExtractor.java
+++ /dev/null
@@ -1,371 +0,0 @@
-/*******************************************************************************
- * <copyright> Copyright 2014 by E-Government Innovation Center EGIZ, Graz, Austria </copyright>
- * PDF-AS has been contracted by the E-Government Innovation Center EGIZ, a
- * joint initiative of the Federal Chancellery Austria and Graz University of
- * Technology.
- * 
- * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
- * the European Commission - subsequent versions of the EUPL (the "Licence");
- * You may not use this work except in compliance with the Licence.
- * You may obtain a copy of the Licence at:
- * http://www.osor.eu/eupl/
- * 
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the Licence is distributed on an "AS IS" basis,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the Licence for the specific language governing permissions and
- * limitations under the Licence.
- * 
- * This product combines work with different licenses. See the "NOTICE" text
- * file for details on the various modules and licenses.
- * The "NOTICE" text file is part of the distribution. Any derivative works
- * that you distribute must include a readable copy of the "NOTICE" text file.
- ******************************************************************************/
-/**
- * <copyright> Copyright 2006 by Know-Center, Graz, Austria </copyright>
- * PDF-AS has been contracted by the E-Government Innovation Center EGIZ, a
- * joint initiative of the Federal Chancellery Austria and Graz University of
- * Technology.
- *
- * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
- * the European Commission - subsequent versions of the EUPL (the "Licence");
- * You may not use this work except in compliance with the Licence.
- * You may obtain a copy of the Licence at:
- * http://www.osor.eu/eupl/
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the Licence is distributed on an "AS IS" basis,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the Licence for the specific language governing permissions and
- * limitations under the Licence.
- *
- * This product combines work with different licenses. See the "NOTICE" text
- * file for details on the various modules and licenses.
- * The "NOTICE" text file is part of the distribution. Any derivative works
- * that you distribute must include a readable copy of the "NOTICE" text file.
- */
-package at.gv.egiz.pdfas.lib.impl.placeholder;
-
-import java.awt.geom.AffineTransform;
-import java.awt.geom.NoninvertibleTransformException;
-import java.awt.image.BufferedImage;
-import java.io.IOException;
-import java.io.InputStream;
-import java.util.Hashtable;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Map;
-import java.util.Vector;
-
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
-import org.apache.pdfbox.cos.COSBase;
-import org.apache.pdfbox.cos.COSName;
-import org.apache.pdfbox.exceptions.WrappedIOException;
-import org.apache.pdfbox.pdmodel.PDDocument;
-import org.apache.pdfbox.pdmodel.PDPage;
-import org.apache.pdfbox.pdmodel.graphics.xobject.PDXObject;
-import org.apache.pdfbox.pdmodel.graphics.xobject.PDXObjectImage;
-import org.apache.pdfbox.util.Matrix;
-import org.apache.pdfbox.util.PDFOperator;
-import org.apache.pdfbox.util.PDFStreamEngine;
-import org.apache.pdfbox.util.ResourceLoader;
-
-import at.gv.egiz.pdfas.common.exceptions.PDFIOException;
-import at.gv.egiz.pdfas.common.exceptions.PdfAsException;
-import at.gv.egiz.pdfas.common.exceptions.PlaceholderExtractionException;
-import at.knowcenter.wag.egov.egiz.pdf.TablePos;
-
-import com.google.zxing.BarcodeFormat;
-import com.google.zxing.BinaryBitmap;
-import com.google.zxing.DecodeHintType;
-import com.google.zxing.LuminanceSource;
-import com.google.zxing.MultiFormatReader;
-import com.google.zxing.NotFoundException;
-import com.google.zxing.ReaderException;
-import com.google.zxing.Result;
-import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
-import com.google.zxing.common.HybridBinarizer;
-
-//////
-
-/**
- * Extract all relevant information from a placeholder image.
- *
- * @author exthex
- *
- */
-public class SignaturePlaceholderExtractor extends PDFStreamEngine {
-	/**
-	 * The log.
-	 */
-	private static Log log = LogFactory
-			.getLog(SignaturePlaceholderExtractor.class);
-
-	public static final String QR_PLACEHOLDER_IDENTIFIER = "PDF-AS-POS";
-	public static final int PLACEHOLDER_MATCH_MODE_STRICT = 0;
-	public static final int PLACEHOLDER_MATCH_MODE_MODERATE = 1;
-	public static final int PLACEHOLDER_MATCH_MODE_LENIENT = 2;
-
-	private List<SignaturePlaceholderData> placeholders = new Vector<SignaturePlaceholderData>();
-	private int currentPage = 0;
-
-	private SignaturePlaceholderExtractor(String placeholderId,
-			int placeholderMatchMode) throws IOException {
-		super(ResourceLoader.loadProperties(
-				"placeholder/pdfbox-reader.properties", true));
-	}
-
-	/**
-	 * Search the document for placeholder images and possibly included
-	 * additional info.<br/>
-	 * Searches only for the first placeholder page after page from top.
-	 *
-	 * @param inputStream
-	 * @return all available info from the first found placeholder.
-	 * @throws PDFDocumentException
-	 *             if the document could not be read.
-	 * @throws PlaceholderExtractionException
-	 *             if STRICT matching mode was requested and no suitable
-	 *             placeholder could be found.
-	 */
-	public static SignaturePlaceholderData extract(PDDocument doc,
-			String placeholderId, int matchMode) throws PdfAsException {
-		SignaturePlaceholderContext.setSignaturePlaceholderData(null);
-
-		SignaturePlaceholderExtractor extractor;
-		try {
-			extractor = new SignaturePlaceholderExtractor(placeholderId,
-					matchMode);
-		} catch (IOException e2) {
-			throw new PDFIOException("error.pdf.io.04", e2);
-		}
-		List<?> pages = doc.getDocumentCatalog().getAllPages();
-		Iterator<?> iter = pages.iterator();
-		int pageNr = 0;
-		while (iter.hasNext()) {
-			pageNr++;
-			PDPage page = (PDPage) iter.next();
-			try {
-				extractor.setCurrentPage(pageNr);
-				extractor.processStream(page, page.findResources(), page
-						.getContents().getStream());
-				SignaturePlaceholderData ret = matchPlaceholderPage(
-						extractor.placeholders, placeholderId, matchMode);
-				if (ret != null) {
-					SignaturePlaceholderContext
-							.setSignaturePlaceholderData(ret);
-					return ret;
-				}
-			} catch (IOException e1) {
-				throw new PDFIOException("error.pdf.io.04", e1);
-			}
-
-		}
-		if (extractor.placeholders.size() > 0) {
-			SignaturePlaceholderData ret = matchPlaceholderDocument(
-					extractor.placeholders, placeholderId, matchMode);
-			SignaturePlaceholderContext.setSignaturePlaceholderData(ret);
-			return ret;
-		}
-		// no placeholders found, apply strict mode if set
-		if (matchMode == PLACEHOLDER_MATCH_MODE_STRICT) {
-			throw new PlaceholderExtractionException("error.pdf.stamp.09");
-		}
-
-		return null;
-	}
-
-	private static SignaturePlaceholderData matchPlaceholderDocument(
-			List<SignaturePlaceholderData> placeholders, String placeholderId,
-			int matchMode) throws PlaceholderExtractionException {
-
-		if (matchMode == PLACEHOLDER_MATCH_MODE_STRICT)
-			throw new PlaceholderExtractionException("error.pdf.stamp.09");
-
-		if (placeholders.size() == 0)
-			return null;
-
-		for (int i = 0; i < placeholders.size(); i++) {
-			SignaturePlaceholderData spd = placeholders.get(i);
-			if (spd.getId() == null)
-				return spd;
-		}
-
-		if (matchMode == PLACEHOLDER_MATCH_MODE_LENIENT)
-			return placeholders.get(0);
-
-		return null;
-	}
-
-	private static SignaturePlaceholderData matchPlaceholderPage(
-			List<SignaturePlaceholderData> placeholders, String placeholderId,
-			int matchMode) {
-		if (placeholders.size() == 0)
-			return null;
-		for (int i = 0; i < placeholders.size(); i++) {
-			SignaturePlaceholderData data = placeholders.get(i);
-			if (placeholderId != null && placeholderId.equals(data.getId()))
-				return data;
-			if (placeholderId == null && data.getId() == null)
-				return data;
-		}
-		return null;
-	}
-
-	private void setCurrentPage(int pageNr) {
-		this.currentPage = pageNr;
-	}
-
-	@Override
-	protected void processOperator(PDFOperator operator, List<COSBase> arguments)
-			throws IOException {
-		String operation = operator.getOperation();
-		if (operation.equals("Do")) {
-			COSName objectName = (COSName) arguments.get(0);
-			Map<?, ?> xobjects = getResources().getXObjects();
-			PDXObject xobject = (PDXObject) xobjects.get(objectName.getName());
-			if (xobject instanceof PDXObjectImage) {
-				try {
-					PDXObjectImage image = (PDXObjectImage) xobject;
-					SignaturePlaceholderData data = checkImage(image);
-					if (data != null) {
-						PDPage page = getCurrentPage();
-						Matrix ctm = getGraphicsState()
-								.getCurrentTransformationMatrix();
-						double rotationInRadians = (page.findRotation() * Math.PI) / 180;
-
-						AffineTransform rotation = new AffineTransform();
-						rotation.setToRotation(rotationInRadians);
-						AffineTransform rotationInverse = rotation
-								.createInverse();
-						Matrix rotationInverseMatrix = new Matrix();
-						rotationInverseMatrix
-								.setFromAffineTransform(rotationInverse);
-						Matrix rotationMatrix = new Matrix();
-						rotationMatrix.setFromAffineTransform(rotation);
-
-						Matrix unrotatedCTM = ctm
-								.multiply(rotationInverseMatrix);
-
-						float x = unrotatedCTM.getXPosition();
-						float y = unrotatedCTM.getYPosition()
-								+ unrotatedCTM.getYScale();
-						float w = unrotatedCTM.getXScale();
-
-						String posString = "p:" + currentPage + ";x:" + x
-								+ ";y:" + y + ";w:" + w;
-						try {
-							data.setTablePos(new TablePos(posString));
-							data.setPlaceholderName(objectName.getName());
-							placeholders.add(data);
-						} catch (PdfAsException e) {
-							throw new WrappedIOException(e);
-						}
-					}
-				} catch (NoninvertibleTransformException e) {
-					throw new WrappedIOException(e);
-				}
-			}
-		} else {
-			super.processOperator(operator, arguments);
-		}
-	}
-
-	/**
-	 * Checks an image if it is a placeholder for a signature.
-	 *
-	 * @param image
-	 * @return
-	 * @throws IOException
-	 */
-	private SignaturePlaceholderData checkImage(PDXObjectImage image)
-			throws IOException {
-		BufferedImage bimg = image.getRGBImage();
-		if (bimg == null) {
-			String type = image.getSuffix();
-			if (type != null) {
-				type = type.toUpperCase() + " images";
-			} else {
-				type = "Image type";
-			}
-			log.info("Unable to extract image for QRCode analysis. "
-					+ type
-					+ " not supported. Add additional JAI Image filters to your classpath. Refer to https://jai.dev.java.net. Skipping image.");
-			return null;
-		}
-		if (bimg.getHeight() < 10 || bimg.getWidth() < 10) {
-			log.debug("Image too small for QRCode. Skipping image.");
-			return null;
-		}
-
-		LuminanceSource source = new BufferedImageLuminanceSource(bimg);
-		BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
-		Result result;
-		long before = System.currentTimeMillis();
-		try {
-			Hashtable<DecodeHintType, Vector<BarcodeFormat>> hints = new Hashtable<DecodeHintType, Vector<BarcodeFormat>>();
-			Vector<BarcodeFormat> formats = new Vector<BarcodeFormat>();
-			formats.add(BarcodeFormat.QR_CODE);
-			hints.put(DecodeHintType.POSSIBLE_FORMATS, formats);
-			result = new MultiFormatReader().decode(bitmap, hints);
-
-			String text = result.getText();
-			String profile = null;
-			String type = null;
-			String sigKey = null;
-			String id = null;
-			if (text != null) {
-				if (text.startsWith(QR_PLACEHOLDER_IDENTIFIER)) {
-					String[] data = text.split(";");
-					if (data.length > 1) {
-						for (int i = 1; i < data.length; i++) {
-							String kvPair = data[i];
-							String[] kv = kvPair.split("=");
-							if (kv.length != 2) {
-								log.debug("Invalid parameter in placeholder data: "
-										+ kvPair);
-							} else {
-								if (kv[0]
-										.equalsIgnoreCase(SignaturePlaceholderData.ID_KEY)) {
-									id = kv[1];
-								} else if (kv[0]
-										.equalsIgnoreCase(SignaturePlaceholderData.PROFILE_KEY)) {
-									profile = kv[1];
-								} else if (kv[0]
-										.equalsIgnoreCase(SignaturePlaceholderData.SIG_KEY_KEY)) {
-									sigKey = kv[1];
-								} else if (kv[0]
-										.equalsIgnoreCase(SignaturePlaceholderData.TYPE_KEY)) {
-									type = kv[1];
-								}
-							}
-						}
-					}
-					return new SignaturePlaceholderData(profile, type, sigKey,
-							id);
-				} else {
-					log.warn("QR-Code found but does not start with \""
-							+ QR_PLACEHOLDER_IDENTIFIER
-							+ "\". Ignoring QR placeholder.");
-				}
-			}
-		} catch (ReaderException re) {
-			if (log.isDebugEnabled()) {
-				log.debug("Could not decode - not a placeholder. needed: "
-						+ (System.currentTimeMillis() - before));
-			}
-			if (!(re instanceof NotFoundException)) {
-				if (log.isInfoEnabled()) {
-					log.info("Failed to decode image", re);
-				}
-			}
-		} catch (ArrayIndexOutOfBoundsException e) {
-			if (log.isInfoEnabled()) {
-				log.info("Failed to decode image. Probably a zxing bug", e);
-			}
-		}
-		return null;
-	}
-
-}