1 /* 2 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 package javax.xml.catalog; 26 27 import java.io.StringReader; 28 import java.util.Iterator; 29 import org.xml.sax.InputSource; 30 31 /** 32 * A SAX EntityResolver/JAXP URIResolver that uses catalogs. 33 * 34 * <p> 35 * This class implements both a SAX EntityResolver and a JAXP URIResolver. 36 * 37 * 38 * @since 9 39 */ 40 final class CatalogResolverImpl implements CatalogResolver { 41 Catalog catalog; 42 43 /** 44 * Construct an instance of the CatalogResolver from a Catalog. 45 * 46 * @param catalog A Catalog. 47 */ 48 public CatalogResolverImpl(Catalog catalog) { 49 this.catalog = catalog; 50 } 51 52 @Override 53 public InputSource resolveEntity(String publicId, String systemId) { 54 CatalogMessages.reportNPEOnNull("systemId", systemId); 55 //Normalize publicId and systemId 56 systemId = Normalizer.normalizeURI(Util.getNotNullOrEmpty(systemId)); 57 publicId = Normalizer.normalizePublicId(Normalizer.decodeURN(Util.getNotNullOrEmpty(publicId))); 58 59 //check whether systemId is an urn 60 if (systemId != null && systemId.startsWith(Util.URN)) { 61 systemId = Normalizer.decodeURN(systemId); 62 if (publicId != null && !publicId.equals(systemId)) { 63 systemId = null; 64 } else { 65 publicId = systemId; 66 systemId = null; 67 } 68 } 69 70 CatalogImpl c = (CatalogImpl)catalog; 71 String resolvedSystemId = Util.resolve(c, publicId, systemId); 72 73 if (resolvedSystemId != null) { 74 return new InputSource(resolvedSystemId); 75 } 76 77 GroupEntry.ResolveType resolveType = ((CatalogImpl) catalog).getResolve(); 78 switch (resolveType) { 79 case IGNORE: 80 return new InputSource(new StringReader("")); 81 case STRICT: 82 CatalogMessages.reportError(CatalogMessages.ERR_NO_MATCH, 83 new Object[]{publicId, systemId}); 84 } 85 86 //no action, allow the parser to continue 87 return null; 88 } 89 90 }