| /* |
| * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package javax.xml.catalog; |
| |
| import com.sun.org.apache.xerces.internal.jaxp.SAXParserFactoryImpl; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.Reader; |
| import java.io.StringReader; |
| import java.net.URL; |
| import javax.xml.parsers.ParserConfigurationException; |
| import javax.xml.parsers.SAXParserFactory; |
| import javax.xml.transform.Source; |
| import javax.xml.transform.sax.SAXSource; |
| import org.w3c.dom.ls.LSInput; |
| import org.xml.sax.InputSource; |
| import org.xml.sax.SAXException; |
| import org.xml.sax.XMLReader; |
| |
| /** |
| * Implements CatalogResolver. |
| * |
| * <p> |
| * This class implements a SAX EntityResolver, StAX XMLResolver, |
| * Schema Validation LSResourceResolver and Transform URIResolver. |
| * |
| * |
| * @since 9 |
| */ |
| final class CatalogResolverImpl implements CatalogResolver { |
| Catalog catalog; |
| |
| /** |
| * Construct an instance of the CatalogResolver from a Catalog. |
| * |
| * @param catalog A Catalog. |
| */ |
| public CatalogResolverImpl(Catalog catalog) { |
| this.catalog = catalog; |
| } |
| |
| /* |
| Implements the EntityResolver interface |
| */ |
| @Override |
| public InputSource resolveEntity(String publicId, String systemId) { |
| //8150187: NPE expected if the system identifier is null for CatalogResolver |
| CatalogMessages.reportNPEOnNull("systemId", systemId); |
| |
| //Normalize publicId and systemId |
| systemId = Normalizer.normalizeURI(Util.getNotNullOrEmpty(systemId)); |
| publicId = Normalizer.normalizePublicId(Normalizer.decodeURN(Util.getNotNullOrEmpty(publicId))); |
| |
| //check whether systemId is a urn |
| if (systemId != null && systemId.startsWith(Util.URN)) { |
| systemId = Normalizer.decodeURN(systemId); |
| if (publicId != null && !publicId.equals(systemId)) { |
| systemId = null; |
| } else { |
| publicId = systemId; |
| systemId = null; |
| } |
| } |
| |
| CatalogImpl c = (CatalogImpl)catalog; |
| String resolvedSystemId = Util.resolve(c, publicId, systemId); |
| |
| if (resolvedSystemId != null) { |
| return new InputSource(resolvedSystemId); |
| } |
| |
| GroupEntry.ResolveType resolveType = ((CatalogImpl) catalog).getResolve(); |
| switch (resolveType) { |
| case IGNORE: |
| return new InputSource(new StringReader("")); |
| case STRICT: |
| CatalogMessages.reportError(CatalogMessages.ERR_NO_MATCH, |
| new Object[]{publicId, systemId}); |
| } |
| |
| //no action, allow the parser to continue |
| return null; |
| } |
| |
| /* |
| Implements the URIResolver interface |
| */ |
| CatalogResolverImpl entityResolver; |
| |
| @Override |
| public Source resolve(String href, String base) { |
| CatalogMessages.reportNPEOnNull("href", href); |
| |
| href = Util.getNotNullOrEmpty(href); |
| base = Util.getNotNullOrEmpty(base); |
| |
| String result = null; |
| CatalogImpl c = (CatalogImpl)catalog; |
| String uri = Normalizer.normalizeURI(href); |
| if (uri == null) { |
| return null; |
| } |
| |
| //check whether uri is a urn |
| if (uri != null && uri.startsWith(Util.URN)) { |
| String publicId = Normalizer.decodeURN(uri); |
| if (publicId != null) { |
| result = Util.resolve(c, publicId, null); |
| } |
| } |
| |
| //if no match with a public id, continue search for a URI |
| if (result == null) { |
| //remove fragment if any. |
| int hashPos = uri.indexOf("#"); |
| if (hashPos >= 0) { |
| uri = uri.substring(0, hashPos); |
| } |
| |
| //search the current catalog |
| result = Util.resolve(c, null, uri); |
| } |
| |
| //Report error or return the URI as is when no match is found |
| if (result == null) { |
| GroupEntry.ResolveType resolveType = c.getResolve(); |
| switch (resolveType) { |
| case IGNORE: |
| return new SAXSource(new InputSource(new StringReader(""))); |
| case STRICT: |
| CatalogMessages.reportError(CatalogMessages.ERR_NO_URI_MATCH, |
| new Object[]{href, base}); |
| } |
| try { |
| URL url = null; |
| |
| if (base == null) { |
| url = new URL(uri); |
| result = url.toString(); |
| } else { |
| URL baseURL = new URL(base); |
| url = (href.length() == 0 ? baseURL : new URL(baseURL, uri)); |
| result = url.toString(); |
| } |
| } catch (java.net.MalformedURLException mue) { |
| CatalogMessages.reportError(CatalogMessages.ERR_CREATING_URI, |
| new Object[]{href, base}); |
| } |
| } |
| |
| SAXSource source = new SAXSource(); |
| source.setInputSource(new InputSource(result)); |
| setEntityResolver(source); |
| return source; |
| } |
| |
| /** |
| * Establish an entityResolver for newly resolved URIs. |
| * <p> |
| * This is called from the URIResolver to set an EntityResolver on the SAX |
| * parser to be used for new XML documents that are encountered as a result |
| * of the document() function, xsl:import, or xsl:include. This is done |
| * because the XSLT processor calls out to the SAXParserFactory itself to |
| * create a new SAXParser to parse the new document. The new parser does not |
| * automatically inherit the EntityResolver of the original (although |
| * arguably it should). Quote from JAXP specification on Class |
| * SAXTransformerFactory: |
| * <p> |
| * {@code If an application wants to set the ErrorHandler or EntityResolver |
| * for an XMLReader used during a transformation, it should use a URIResolver |
| * to return the SAXSource which provides (with getXMLReader) a reference to |
| * the XMLReader} |
| * |
| */ |
| private void setEntityResolver(SAXSource source) { |
| XMLReader reader = source.getXMLReader(); |
| if (reader == null) { |
| SAXParserFactory spFactory = new SAXParserFactoryImpl(); |
| spFactory.setNamespaceAware(true); |
| try { |
| reader = spFactory.newSAXParser().getXMLReader(); |
| } catch (ParserConfigurationException | SAXException ex) { |
| CatalogMessages.reportRunTimeError(CatalogMessages.ERR_PARSER_CONF, ex); |
| } |
| } |
| if (entityResolver != null) { |
| entityResolver = new CatalogResolverImpl(catalog); |
| } |
| reader.setEntityResolver(entityResolver); |
| source.setXMLReader(reader); |
| } |
| |
| @Override |
| public InputStream resolveEntity(String publicId, String systemId, String baseUri, String namespace) { |
| InputSource is = resolveEntity(publicId, systemId); |
| |
| if (is != null && !is.isEmpty()) { |
| |
| try { |
| return new URL(is.getSystemId()).openStream(); |
| } catch (IOException ex) { |
| //considered as no mapping. |
| } |
| |
| } |
| |
| GroupEntry.ResolveType resolveType = ((CatalogImpl) catalog).getResolve(); |
| switch (resolveType) { |
| case IGNORE: |
| return null; |
| case STRICT: |
| CatalogMessages.reportError(CatalogMessages.ERR_NO_MATCH, |
| new Object[]{publicId, systemId}); |
| } |
| |
| //no action, allow the parser to continue |
| return null; |
| } |
| |
| @Override |
| public LSInput resolveResource(String type, String namespaceURI, String publicId, String systemId, String baseURI) { |
| InputSource is = resolveEntity(publicId, systemId); |
| |
| if (is != null && !is.isEmpty()) { |
| return new LSInputImpl(is.getSystemId()); |
| } |
| |
| GroupEntry.ResolveType resolveType = ((CatalogImpl) catalog).getResolve(); |
| switch (resolveType) { |
| case IGNORE: |
| return null; |
| case STRICT: |
| CatalogMessages.reportError(CatalogMessages.ERR_NO_MATCH, |
| new Object[]{publicId, systemId}); |
| } |
| |
| //no action, allow the parser to continue |
| return null; |
| } |
| |
| /** |
| * Implements LSInput. All that we need is the systemId since the Catalog |
| * has already resolved it. |
| */ |
| class LSInputImpl implements LSInput { |
| |
| private String systemId; |
| |
| public LSInputImpl(String systemId) { |
| this.systemId = systemId; |
| } |
| |
| @Override |
| public Reader getCharacterStream() { |
| return null; |
| } |
| |
| @Override |
| public void setCharacterStream(Reader characterStream) { |
| } |
| |
| @Override |
| public InputStream getByteStream() { |
| return null; |
| } |
| |
| @Override |
| public void setByteStream(InputStream byteStream) { |
| } |
| |
| @Override |
| public String getStringData() { |
| return null; |
| } |
| |
| @Override |
| public void setStringData(String stringData) { |
| } |
| |
| @Override |
| public String getSystemId() { |
| return systemId; |
| } |
| |
| @Override |
| public void setSystemId(String systemId) { |
| this.systemId = systemId; |
| } |
| |
| @Override |
| public String getPublicId() { |
| return null; |
| } |
| |
| @Override |
| public void setPublicId(String publicId) { |
| } |
| |
| @Override |
| public String getBaseURI() { |
| return null; |
| } |
| |
| @Override |
| public void setBaseURI(String baseURI) { |
| } |
| |
| @Override |
| public String getEncoding() { |
| return null; |
| } |
| |
| @Override |
| public void setEncoding(String encoding) { |
| } |
| |
| @Override |
| public boolean getCertifiedText() { |
| return false; |
| } |
| |
| @Override |
| public void setCertifiedText(boolean certifiedText) { |
| } |
| } |
| |
| } |
