| /* |
| * Copyright (c) 1997, 2022 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Distribution License v. 1.0, which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| package com.sun.tools.xjc; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.Reader; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import javax.xml.transform.stream.StreamSource; |
| import javax.xml.validation.Schema; |
| import javax.xml.validation.SchemaFactory; |
| import javax.xml.validation.ValidatorHandler; |
| |
| import org.glassfish.jaxb.core.v2.util.XmlFactory; |
| import javax.xml.XMLConstants; |
| |
| import org.w3c.dom.ls.LSInput; |
| import org.w3c.dom.ls.LSResourceResolver; |
| import org.xml.sax.SAXException; |
| |
| import static org.glassfish.jaxb.core.v2.util.XmlFactory.allowExternalAccess; |
| |
| /** |
| * Wraps a JAXP {@link Schema} object and lazily instantiate it. |
| * |
| * This object is thread-safe. There should be only one instance of |
| * this for the whole VM. |
| * |
| * @author Kohsuke Kawaguchi |
| */ |
| public final class SchemaCache { |
| |
| private final boolean createResolver; |
| private final String resourceName; |
| private final Class<?> clazz; |
| |
| private Schema schema; |
| |
| public SchemaCache(String resourceName, Class<?> classToResolveResources) { |
| this(resourceName, classToResolveResources, false); |
| } |
| |
| public SchemaCache(String resourceName, Class<?> classToResolveResources, boolean createResolver) { |
| this.resourceName = resourceName; |
| this.createResolver = createResolver; |
| this.clazz = classToResolveResources; |
| } |
| |
| public ValidatorHandler newValidator() { |
| if (schema==null) { |
| synchronized (this) { |
| if (schema == null) { |
| |
| ResourceResolver resourceResolver = null; |
| try (InputStream is = clazz.getResourceAsStream(resourceName)) { |
| |
| StreamSource source = new StreamSource(is); |
| source.setSystemId(resourceName); |
| // do not disable secure processing - these are well-known schemas |
| |
| SchemaFactory sf = XmlFactory.createSchemaFactory(XMLConstants.W3C_XML_SCHEMA_NS_URI, false); |
| SchemaFactory schemaFactory = allowExternalAccess(sf, "file", false); |
| |
| if (createResolver) { |
| resourceResolver = new ResourceResolver(clazz); |
| schemaFactory.setResourceResolver(resourceResolver); |
| } |
| schema = schemaFactory.newSchema(source); |
| |
| } catch (IOException | SAXException e) { |
| throw new InternalError(e.getMessage(), e); |
| } finally { |
| if (resourceResolver != null) resourceResolver.closeStreams(); |
| } |
| } |
| } |
| } |
| return schema.newValidatorHandler(); |
| } |
| |
| class ResourceResolver implements LSResourceResolver { |
| |
| private List<InputStream> streamsToClose = Collections.synchronizedList(new ArrayList<>()); |
| private Class<?> clazz; |
| |
| ResourceResolver(Class<?> clazz) { |
| this.clazz = clazz; |
| } |
| |
| @Override |
| public LSInput resolveResource(String type, String namespaceURI, String publicId, String systemId, String baseURI) { |
| // XSOM passes the namespace URI to the publicID parameter. |
| // we do the same here . |
| InputStream is = clazz.getResourceAsStream(systemId); |
| streamsToClose.add(is); |
| return new Input(is, publicId, systemId); |
| } |
| |
| void closeStreams() { |
| for (InputStream is : streamsToClose) { |
| if (is != null) { |
| try { |
| is.close(); |
| } catch (IOException e) { |
| // nothing to do ... |
| } |
| } |
| } |
| } |
| } |
| |
| } |
| |
| class Input implements LSInput { |
| |
| private InputStream is; |
| private String publicId; |
| private String systemId; |
| |
| public Input(InputStream is, String publicId, String systemId) { |
| this.is = is; |
| this.publicId = publicId; |
| this.systemId = systemId; |
| } |
| |
| @Override |
| public Reader getCharacterStream() { |
| return null; |
| } |
| |
| @Override |
| public void setCharacterStream(Reader characterStream) { |
| } |
| |
| @Override |
| public InputStream getByteStream() { |
| return is; |
| } |
| |
| @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) { |
| } |
| |
| @Override |
| public String getPublicId() { |
| return publicId; |
| } |
| |
| @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) { |
| } |
| } |
| |
| |