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/*
* $Id: PdfA2Checker.java 5914 2013-07-28 14:18:11Z blowagie $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2013 1T3XT BVBA
* Authors: Alexander Chingarev, Bruno Lowagie, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT,
* 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
* source product.
*
* For more information, please contact iText Software Corp. at this
* address: [email protected]
*/
package com.itextpdf.text.pdf.internal;
import com.itextpdf.text.Jpeg2000;
import com.itextpdf.text.error_messages.MessageLocalization;
import com.itextpdf.text.pdf.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
public class PdfA2Checker extends PdfA1Checker {
static private HashSet allowedBlendModes = new HashSet(Arrays.asList(new PdfName[]{PdfGState.BM_NORMAL, PdfGState.BM_COMPATIBLE,
PdfGState.BM_MULTIPLY, PdfGState.BM_SCREEN, PdfGState.BM_OVERLAY, PdfGState.BM_DARKEN, PdfGState.BM_LIGHTEN, PdfGState.BM_COLORDODGE,
PdfGState.BM_COLORBURN, PdfGState.BM_HARDLIGHT, PdfGState.BM_SOFTLIGHT, PdfGState.BM_DIFFERENCE, PdfGState.BM_EXCLUSION}));
PdfA2Checker(PdfAConformanceLevel conformanceLevel) {
super(conformanceLevel);
}
@Override
protected void checkGState(PdfWriter writer, int key, Object obj1) {
PdfDictionary gs = (PdfDictionary) obj1;
PdfObject obj = gs.get(PdfName.BM);
if (obj != null && !allowedBlendModes.contains(obj)) {
throw new PdfAConformanceException(MessageLocalization.getComposedMessage("blend.mode.1.not.allowed", obj.toString()));
}
}
@Override
protected void checkImage(PdfWriter writer, int key, Object obj1) {
PdfImage pdfImage = (PdfImage) obj1;
if (pdfImage != null && (pdfImage.getImage() instanceof Jpeg2000)) {
Jpeg2000 jpeg2000 = (Jpeg2000) pdfImage.getImage();
if (!jpeg2000.isJp2()) {
throw new PdfAConformanceException(MessageLocalization.getComposedMessage("only.jpx.baseline.set.of.features.shall.be.used"));
}
if (jpeg2000.getNumOfComps() != 1 && jpeg2000.getNumOfComps() != 3 && jpeg2000.getNumOfComps() != 4) {
throw new PdfAConformanceException(MessageLocalization.getComposedMessage("the.number.of.colour.channels.in.the.jpeg2000.data.shall.be.123"));
}
if (jpeg2000.getBpc() < 1 || jpeg2000.getBpc() > 38) {
throw new PdfAConformanceException(MessageLocalization.getComposedMessage("the.bit-depth.of.the.jpeg2000.data.shall.have.a.value.in.the.range.1to38"));
}
if (jpeg2000.getBpcBoxData() != null) {
throw new PdfAConformanceException(MessageLocalization.getComposedMessage("all.colour.channels.in.the.jpeg2000.data.shall.have.the.same.bit-depth"));
}
ArrayList colorSpecBoxes = jpeg2000.getColorSpecBoxes();
if (colorSpecBoxes != null) {
if (colorSpecBoxes.size() > 1) {
int approx0x01 = 0;
for (Jpeg2000.ColorSpecBox colorSpecBox : colorSpecBoxes) {
if (colorSpecBox.getApprox() == 1)
approx0x01++;
}
if (approx0x01 != 1) {
throw new PdfAConformanceException(MessageLocalization.getComposedMessage("exactly.one.colour.space.specification.shall.have.the.value.0x01.in.the.approx.field"));
}
}
for (Jpeg2000.ColorSpecBox colorSpecBox : colorSpecBoxes) {
if (colorSpecBox.getMeth() != 1 && colorSpecBox.getMeth() != 2 && colorSpecBox.getMeth() != 3) {
throw new PdfAConformanceException(MessageLocalization.getComposedMessage("the.value.of.the.meth.entry.in.colr.box.shall.be.123"));
}
if (colorSpecBox.getEnumCs() == 19) {
throw new PdfAConformanceException(MessageLocalization.getComposedMessage("jpeg2000.enumerated.colour.space.19.(CIEJab).shall.not.be.used"));
}
byte[] colorProfileBytes = colorSpecBox.getColorProfile();
if (colorProfileBytes != null) {
//ICC profile verification should follow here.
}
}
}
}
}
@Override
protected void checkLayer(PdfWriter writer, int key, Object obj1) {
if (obj1 instanceof PdfOCG) {
} else if (obj1 instanceof PdfOCProperties) {
PdfOCProperties properties = (PdfOCProperties) obj1;
ArrayList configsList = new ArrayList();
PdfDictionary d = properties.getAsDict(PdfName.D);
if (d != null)
configsList.add(d);
PdfArray configs = properties.getAsArray(PdfName.CONFIGS);
if (configs != null) {
for (int i = 0; i < configs.size(); i++) {
PdfDictionary config = configs.getAsDict(i);
if (config != null)
configsList.add(config);
}
}
HashSet ocgs = new HashSet();
PdfArray ocgsArray = properties.getAsArray(PdfName.OCGS);
if (ocgsArray != null)
for (int i = 0; i < ocgsArray.size(); i++)
ocgs.add(ocgsArray.getPdfObject(i));
HashSet names = new HashSet();
HashSet order = new HashSet();
for (PdfDictionary config : configsList) {
PdfString name = config.getAsString(PdfName.NAME);
if (name == null) {
throw new PdfAConformanceException(MessageLocalization.getComposedMessage("optional.content.configuration.dictionary.shall.contain.name.entry"));
}
String name1 = name.toUnicodeString();
if (names.contains(name1)) {
throw new PdfAConformanceException(MessageLocalization.getComposedMessage("value.of.name.entry.shall.be.unique.amongst.all.optional.content.configuration.dictionaries"));
}
names.add(name1);
if (config.contains(PdfName.AS)) {
throw new PdfAConformanceException(MessageLocalization.getComposedMessage("the.as.key.shall.not.appear.in.any.optional.content.configuration.dictionary"));
}
PdfArray orderArray = config.getAsArray(PdfName.ORDER);
if (orderArray != null)
fillOrderRecursively(orderArray, order);
}
if (order.size() != ocgs.size()) {
throw new PdfAConformanceException(MessageLocalization.getComposedMessage("order.array.shall.contain.references.to.all.ocgs"));
}
ocgs.retainAll(order);
if (order.size() != ocgs.size()) {
throw new PdfAConformanceException(MessageLocalization.getComposedMessage("order.array.shall.contain.references.to.all.ocgs"));
}
} else {
}
}
private void fillOrderRecursively(PdfArray orderArray, HashSet order) {
for (int i = 0; i < orderArray.size(); i++) {
PdfArray orderChild = orderArray.getAsArray(i);
if (orderChild == null) {
order.add(orderArray.getPdfObject(i));
} else {
fillOrderRecursively(orderChild, order);
}
}
}
}
