org.apache.catalina.ssi.SSIExec Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of payara-micro Show documentation
Micro Distribution of the Payara Project for IBM JDK
There is a newer version: 4.1.2.181
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2013 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 *
 *
 * This file incorporates work covered by the following copyright and
 * permission notice:
 *
 * Copyright 2004 The Apache Software Foundation
 *
 * Licensed 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
 * limitations under the License.
 */

package org.apache.catalina.ssi;


import org.apache.catalina.util.IOTools;
import org.glassfish.web.util.HtmlEntityEncoder;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
/**
 * Implements the Server-side #exec command
 * 
 * @author Bip Thelin
 * @author Amy Roh
 * @author Paul Speed
 * @author Dan Sandberg
 * @author David Becker
 * @version $Revision: 1.4 $, $Date: 2007/05/05 05:32:19 $
 */
public class SSIExec implements SSICommand {
    protected SSIInclude ssiInclude;
    protected final static int BUFFER_SIZE = 1024;

    public SSIExec() {
        this.ssiInclude = new SSIInclude();
    }

    /**
     * @see SSICommand
     */
    public long process(SSIMediator ssiMediator, String commandName,
            String[] paramNames, String[] paramValues, PrintWriter writer) {
        long lastModified = 0;
        String configErrMsg = ssiMediator.getConfigErrMsg();
        String paramName = paramNames[0];
        String paramValue = paramValues[0];
        String substitutedValue = ssiMediator.substituteVariables(paramValue);
        if (paramName.equalsIgnoreCase("cgi")) {
            lastModified = ssiInclude.process(ssiMediator, "include",
                    			new String[]{"virtual"}, new String[]{substitutedValue},
								writer);
        } else if (paramName.equalsIgnoreCase("cmd")) {
            boolean foundProgram = false;
            try {
                Runtime rt = Runtime.getRuntime();
                Process proc = rt.exec(substitutedValue);
                foundProgram = true;
                BufferedReader stdOutReader = new BufferedReader(
                        new InputStreamReader(proc.getInputStream()));
                BufferedReader stdErrReader = new BufferedReader(
                        new InputStreamReader(proc.getErrorStream()));
                char[] buf = new char[BUFFER_SIZE];
                IOTools.flow(stdErrReader, writer, buf);
                IOTools.flow(stdOutReader, writer, buf);
                proc.waitFor();
                lastModified = System.currentTimeMillis();                
            } catch (InterruptedException e) {
                ssiMediator.log("Couldn't exec file: " + substitutedValue, e);
                writer.write(HtmlEntityEncoder.encodeXSS(configErrMsg));
            } catch (IOException e) {
                //if (!foundProgram) {
                    //apache doesn't output an error message if it can't find
                    // a program
                //}
                ssiMediator.log("Couldn't exec file: " + substitutedValue, e);
            }
        }
        return lastModified;
    }
}