/*
 * JBoss, Home of Professional Open Source
 *
 * Copyright 2013 Red Hat, Inc. and/or its affiliates.
 *
 * 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.picketlink.identity.federation.web.util;

/**
 * Utility Class to detect which server we are currently operating in
 *
 * @author Anil.Saldhana@redhat.com
 * @since Sep 11, 2009
 */
public class ServerDetector {

    private boolean jboss = false;

    private boolean tomcat = false;

    public ServerDetector() {
        this.detectServer();
    }

    public boolean isJboss() {
        return jboss;
    }

    public boolean isTomcat() {
        return tomcat;
    }

    private void detectServer() {
        // Detect JBoss
        Class<?> me = getClass();
        Class<?> clazz = null;
        try {
            clazz = SecurityActions.loadClass(me, "org.jboss.system.Service");
            if (clazz != null) {
                jboss = true;
                return;
            }
        } catch (Exception e) {
        }

        // If class is null - try the JBossAS7 and beyond
        try {
            clazz = SecurityActions.loadClass(me, "org.jboss.as.web.WebServer");
            if (clazz != null) {
                jboss = true;
                return;
            }
        } catch (Exception e) {
        }

        // Tomcat
        try {
            clazz = SecurityActions.loadClass(getClass(), "org.apache.catalina.Server");
            if (clazz != null) {
                tomcat = true;
                return;
            }
        } catch (Exception e) {
            // ignore
        }
    }
}