ohair@286: /*
alanb@368:  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
ohair@286:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ohair@286:  *
ohair@286:  * This code is free software; you can redistribute it and/or modify it
ohair@286:  * under the terms of the GNU General Public License version 2 only, as
ohair@286:  * published by the Free Software Foundation.  Oracle designates this
ohair@286:  * particular file as subject to the "Classpath" exception as provided
ohair@286:  * by Oracle in the LICENSE file that accompanied this code.
ohair@286:  *
ohair@286:  * This code is distributed in the hope that it will be useful, but WITHOUT
ohair@286:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ohair@286:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
ohair@286:  * version 2 for more details (a copy is included in the LICENSE file that
ohair@286:  * accompanied this code).
ohair@286:  *
ohair@286:  * You should have received a copy of the GNU General Public License version
ohair@286:  * 2 along with this work; if not, write to the Free Software Foundation,
ohair@286:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ohair@286:  *
ohair@286:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@286:  * or visit www.oracle.com if you need additional information or have any
ohair@286:  * questions.
ohair@286:  */
ohair@286: 
ohair@286: package com.sun.tools.internal.xjc.reader.xmlschema.parser;
ohair@286: 
ohair@286: import java.io.File;
ohair@286: import java.io.IOException;
ohair@286: 
ohair@286: import javax.xml.transform.Source;
ohair@286: import javax.xml.transform.sax.SAXSource;
ohair@286: import javax.xml.validation.SchemaFactory;
ohair@286: 
ohair@286: import com.sun.tools.internal.xjc.ConsoleErrorReporter;
ohair@286: import com.sun.tools.internal.xjc.ErrorReceiver;
ohair@286: import com.sun.tools.internal.xjc.util.ErrorReceiverFilter;
ohair@286: 
alanb@368: import com.sun.xml.internal.bind.v2.util.XmlFactory;
ohair@286: import org.w3c.dom.ls.LSInput;
ohair@286: import org.w3c.dom.ls.LSResourceResolver;
ohair@286: import org.xml.sax.EntityResolver;
ohair@286: import org.xml.sax.InputSource;
ohair@286: import org.xml.sax.SAXException;
ohair@286: 
ohair@286: import static javax.xml.XMLConstants.W3C_XML_SCHEMA_NS_URI;
ohair@286: 
ohair@286: /**
ohair@286:  * Checks XML Schema XML representation constraints and
ohair@286:  * schema component constraints by using JAXP 1.3 validation framework.
ohair@286:  * <p/>
ohair@286:  *
ohair@286:  * @author Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
ohair@286:  * @author Ryan Shoemaker (ryan.shoemaker@sun.com)
ohair@286:  */
ohair@286: public class SchemaConstraintChecker {
ohair@286: 
ohair@286:     /**
ohair@286:      * @param schemas      Schema files to be checked.
ohair@286:      * @param errorHandler detected errors will be reported to this handler.
ohair@286:      * @return true if there was no error, false if there were errors.
ohair@286:      */
ohair@286:     public static boolean check(InputSource[] schemas,
alanb@368:                                 ErrorReceiver errorHandler,
alanb@368:                                 final EntityResolver entityResolver,
alanb@368:                                 boolean disableXmlSecurity) {
ohair@286: 
ohair@286:         ErrorReceiverFilter errorFilter = new ErrorReceiverFilter(errorHandler);
ohair@286:         boolean hadErrors = false;
ohair@286: 
alanb@368:         SchemaFactory sf = XmlFactory.createSchemaFactory(W3C_XML_SCHEMA_NS_URI, disableXmlSecurity);
mkos@408:         XmlFactory.allowExternalAccess(sf, "all", disableXmlSecurity);
ohair@286:         sf.setErrorHandler(errorFilter);
ohair@286:         if( entityResolver != null ) {
ohair@286:             sf.setResourceResolver(new LSResourceResolver() {
ohair@286:                 public LSInput resolveResource(String type, String namespaceURI, String publicId, String systemId, String baseURI) {
ohair@286:                     try {
ohair@286:                         // XSOM passes the namespace URI to the publicID parameter.
ohair@286:                         // we do the same here .
ohair@286:                         InputSource is = entityResolver.resolveEntity(namespaceURI, systemId);
ohair@286:                         if(is==null)    return null;
ohair@286:                         return new LSInputSAXWrapper(is);
ohair@286:                     } catch (SAXException e) {
ohair@286:                         // TODO: is this sufficient?
ohair@286:                         return null;
ohair@286:                     } catch (IOException e) {
ohair@286:                         // TODO: is this sufficient?
ohair@286:                         return null;
ohair@286:                     }
ohair@286:                 }
ohair@286:             });
ohair@286:         }
ohair@286: 
ohair@286:         try {
mkos@408:             XmlFactory.allowExternalDTDAccess(sf, "all", disableXmlSecurity);
ohair@286:             sf.newSchema(getSchemaSource(schemas, entityResolver));
ohair@286:         } catch (SAXException e) {
ohair@286:             // TODO: we haven't thrown exceptions from here before. should we just trap them and return false?
ohair@286:             hadErrors = true;
ohair@286:         } catch( OutOfMemoryError e) {
ohair@286:             errorHandler.warning(null,Messages.format(Messages.WARN_UNABLE_TO_CHECK_CORRECTNESS));
ohair@286:         }
ohair@286: 
ohair@286:         return !(hadErrors || errorFilter.hadError());
ohair@286:     }
ohair@286: 
ohair@286:     /**
ohair@286:      * convert an array of {@link InputSource InputSource} into an
ohair@286:      * array of {@link Source Source}
ohair@286:      *
ohair@286:      * @param schemas array of {@link InputSource InputSource}
ohair@286:      * @return array of {@link Source Source}
ohair@286:      */
ohair@286:     private static Source[] getSchemaSource(InputSource[] schemas, EntityResolver entityResolver) throws SAXException {
ohair@286:         SAXSource[] sources = new SAXSource[schemas.length];
ohair@286:         for (int i = 0; i < schemas.length; i++) {
ohair@286:             sources[i] = new SAXSource(schemas[i]);
ohair@286: //            sources[i].getXMLReader().setEntityResolver(entityResolver);
ohair@286:         }
ohair@286:         return sources;
ohair@286:     }
ohair@286: 
ohair@286:     // quick test
ohair@286:     public static void main(String[] args) throws IOException {
ohair@286:         InputSource[] sources = new InputSource[args.length];
ohair@286:         for (int i = 0; i < args.length; i++)
ohair@286:             sources[i] = new InputSource(new File(args[i]).toURL().toExternalForm());
ohair@286: 
alanb@368:         check(sources, new ConsoleErrorReporter(), null, true);
ohair@286:     }
ohair@286: }