/*
 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
 */
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
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package com.sun.org.apache.xpath.internal.functions;

import com.sun.org.apache.xpath.internal.XPathContext;
import com.sun.org.apache.xpath.internal.objects.XObject;
import com.sun.org.apache.xpath.internal.objects.XString;
import com.sun.org.apache.xpath.internal.res.XPATHErrorResources;
import java.io.BufferedInputStream;
import java.io.InputStream;
import java.util.Properties;
import jdk.xml.internal.SecuritySupport;

Execute the SystemProperty() function.
@xsl.usageadvanced
@LastModified: Sep 2017
/** * Execute the SystemProperty() function. * @xsl.usage advanced * @LastModified: Sep 2017 */
public class FuncSystemProperty extends FunctionOneArg { static final long serialVersionUID = 3694874980992204867L;
The path/filename of the property file: XSLTInfo.properties Maintenance note: see also com.sun.org.apache.xalan.internal.processor.TransformerFactoryImpl.XSLT_PROPERTIES
/** * The path/filename of the property file: XSLTInfo.properties * Maintenance note: see also * com.sun.org.apache.xalan.internal.processor.TransformerFactoryImpl.XSLT_PROPERTIES */
static final String XSLT_PROPERTIES = "com/sun/org/apache/xalan/internal/res/XSLTInfo.properties";
Execute the function. The function must return a valid object.
Params:
  • xctxt – The current execution context.
Throws:
Returns:A valid XObject.
/** * Execute the function. The function must return * a valid object. * @param xctxt The current execution context. * @return A valid XObject. * * @throws javax.xml.transform.TransformerException */
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException { String fullName = m_arg0.execute(xctxt).str(); int indexOfNSSep = fullName.indexOf(':'); String result; String propName = ""; // List of properties where the name of the // property argument is to be looked for. Properties xsltInfo = new Properties(); loadPropertyFile(xsltInfo); if (indexOfNSSep > 0) { String prefix = (indexOfNSSep >= 0) ? fullName.substring(0, indexOfNSSep) : ""; String namespace; namespace = xctxt.getNamespaceContext().getNamespaceForPrefix(prefix); propName = (indexOfNSSep < 0) ? fullName : fullName.substring(indexOfNSSep + 1); if (namespace.startsWith("http://www.w3.org/XSL/Transform") || namespace.equals("http://www.w3.org/1999/XSL/Transform")) { result = xsltInfo.getProperty(propName); if (null == result) { warn(xctxt, XPATHErrorResources.WG_PROPERTY_NOT_SUPPORTED, new Object[]{ fullName }); //"XSL Property not supported: "+fullName); return XString.EMPTYSTRING; } } else { warn(xctxt, XPATHErrorResources.WG_DONT_DO_ANYTHING_WITH_NS, new Object[]{ namespace, fullName }); //"Don't currently do anything with namespace "+namespace+" in property: "+fullName); try { result = SecuritySupport.getSystemProperty(propName); if (null == result) { // result = System.getenv(propName); return XString.EMPTYSTRING; } } catch (SecurityException se) { warn(xctxt, XPATHErrorResources.WG_SECURITY_EXCEPTION, new Object[]{ fullName }); //"SecurityException when trying to access XSL system property: "+fullName); return XString.EMPTYSTRING; } } } else { try { result = SecuritySupport.getSystemProperty(fullName); if (null == result) { // result = System.getenv(fullName); return XString.EMPTYSTRING; } } catch (SecurityException se) { warn(xctxt, XPATHErrorResources.WG_SECURITY_EXCEPTION, new Object[]{ fullName }); //"SecurityException when trying to access XSL system property: "+fullName); return XString.EMPTYSTRING; } } if (propName.equals("version") && result.length() > 0) { try { // Needs to return the version number of the spec we conform to. return new XString("1.0"); } catch (Exception ex) { return new XString(result); } } else return new XString(result); }
Retrieve a property bundle from XSLT_PROPERTIES
Params:
  • target – The target property bag the file will be placed into.
/** * Retrieve a property bundle from XSLT_PROPERTIES * * @param target The target property bag the file will be placed into. */
private void loadPropertyFile(Properties target) { try { // Use SecuritySupport class to provide privileged access to property file InputStream is = SecuritySupport.getResourceAsStream(XSLT_PROPERTIES); // get a buffered version try (BufferedInputStream bis = new BufferedInputStream(is)) { target.load(bis); // and load up the property bag from this } } catch (Exception ex) { // ex.printStackTrace(); throw new com.sun.org.apache.xml.internal.utils.WrappedRuntimeException(ex); } } }