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/*
*
* This file is part of the iText (R) project.
Copyright (c) 1998-2022 iText Group NV
* 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
* ITEXT GROUP. ITEXT GROUP 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.error_messages.MessageLocalization;
import com.itextpdf.text.pdf.*;
import java.util.Arrays;
import java.util.HashSet;
public class PdfA3Checker extends PdfA2Checker {
static private HashSet allowedAFRelationships = new HashSet(Arrays.asList(
AFRelationshipValue.Source, AFRelationshipValue.Data, AFRelationshipValue.Alternative,
AFRelationshipValue.Supplement, AFRelationshipValue.Unspecified));
PdfA3Checker(PdfAConformanceLevel conformanceLevel) {
super(conformanceLevel);
}
@Override
protected HashSet initKeysForCheck() {
HashSet keysForCheck = super.initKeysForCheck();
keysForCheck.add(PdfName.PARAMS);
keysForCheck.add(PdfName.MODDATE);
keysForCheck.add(PdfName.F);
return keysForCheck;
}
@Override
protected void checkFileSpec(PdfWriter writer, int key, Object obj1) {
if (obj1 instanceof PdfFileSpecification) {
PdfDictionary fileSpec = (PdfFileSpecification)obj1;
if(!fileSpec.contains(PdfName.UF) || !fileSpec.contains(PdfName.F)
|| !fileSpec.contains(PdfName.DESC)) {
throw new PdfAConformanceException(obj1, MessageLocalization.getComposedMessage("file.specification.dictionary.shall.contain.f.uf.and.desc.entries"));
}
PdfObject obj = fileSpec.get(PdfName.AFRELATIONSHIP);
if (obj == null || !obj.isName() || !allowedAFRelationships.contains(obj)) {
throw new PdfAConformanceException(obj1, MessageLocalization.getComposedMessage("file.specification.dictionary.shall.contain.correct.afrelationship.key"));
}
if (fileSpec.contains(PdfName.EF)) {
PdfDictionary dict = getDirectDictionary(fileSpec.get(PdfName.EF));
if (dict == null || !dict.contains(PdfName.F)) {
throw new PdfAConformanceException(obj1, MessageLocalization.getComposedMessage("ef.key.of.file.specification.dictionary.shall.contain.dictionary.with.valid.f.key"));
}
PdfDictionary embeddedFile = getDirectDictionary(dict.get(PdfName.F));
if (embeddedFile == null) {
throw new PdfAConformanceException(obj1, MessageLocalization.getComposedMessage("ef.key.of.file.specification.dictionary.shall.contain.dictionary.with.valid.f.key"));
}
checkEmbeddedFile(embeddedFile);
}
}
}
protected void checkEmbeddedFile(PdfDictionary embeddedFile) {
PdfObject params = getDirectObject(embeddedFile.get(PdfName.PARAMS));
if (params == null) {
throw new PdfAConformanceException(embeddedFile, MessageLocalization.getComposedMessage("embedded.file.shall.contain.valid.params.key"));
} else if (params.isDictionary()){
PdfObject modDate = ((PdfDictionary)params).get(PdfName.MODDATE);
if (modDate == null || !(modDate instanceof PdfString)) {
throw new PdfAConformanceException(embeddedFile, MessageLocalization.getComposedMessage("embedded.file.shall.contain.params.key.with.valid.moddate.key"));
}
}
}
@Override
protected void checkPdfObject(PdfWriter writer, int key, Object obj1) {
super.checkPdfObject(writer, key, obj1);
if (obj1 instanceof PdfDictionary) {
PdfDictionary dictionary = (PdfDictionary) obj1;
PdfName type = dictionary.getAsName(PdfName.TYPE);
if (PdfName.EMBEDDEDFILE.equals(type)) {
checkEmbeddedFile(dictionary);
}
}
}
}
