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/*
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 *
 * Copyright (c) 1997-2012 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.
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 * file and include the License file at packager/legal/LICENSE.txt.
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 * and therefore, elected the GPL Version 2 license, then the option applies
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 */
// Portions Copyright [2018] [Payara Foundation and/or its affiliates]
package com.sun.enterprise.security.cli;

import static com.sun.enterprise.security.cli.CLIUtil.chooseConfig;
import static com.sun.enterprise.security.cli.CLIUtil.isRealmNew;
import static com.sun.enterprise.util.SystemPropertyConstants.DEFAULT_SERVER_INSTANCE_NAME;
import static org.glassfish.api.ActionReport.ExitCode.FAILURE;
import static org.glassfish.api.ActionReport.ExitCode.SUCCESS;
import static org.glassfish.config.support.CommandTarget.CLUSTER;
import static org.glassfish.config.support.CommandTarget.CONFIG;
import static org.glassfish.config.support.CommandTarget.DAS;
import static org.glassfish.config.support.CommandTarget.STANDALONE_INSTANCE;

import java.beans.PropertyVetoException;
import java.util.Properties;
import java.util.Set;

import javax.inject.Inject;
import javax.inject.Named;

import org.glassfish.api.ActionReport;
import org.glassfish.api.I18n;
import org.glassfish.api.Param;
import org.glassfish.api.admin.AccessRequired;
import org.glassfish.api.admin.AdminCommand;
import org.glassfish.api.admin.AdminCommandContext;
import org.glassfish.api.admin.AdminCommandSecurity;
import org.glassfish.api.admin.ExecuteOn;
import org.glassfish.api.admin.RuntimeType;
import org.glassfish.api.admin.ServerEnvironment;
import org.glassfish.config.support.CommandTarget;
import org.glassfish.config.support.TargetType;
import org.glassfish.hk2.api.PerLookup;
import org.jvnet.hk2.annotations.Service;
import org.jvnet.hk2.config.ConfigSupport;
import org.jvnet.hk2.config.SingleConfigCode;
import org.jvnet.hk2.config.TransactionFailure;
import org.jvnet.hk2.config.types.Property;

import com.sun.enterprise.config.serverbeans.AuthRealm;
import com.sun.enterprise.config.serverbeans.Config;
import com.sun.enterprise.config.serverbeans.Domain;
import com.sun.enterprise.config.serverbeans.SecurityService;
import com.sun.enterprise.security.SecurityConfigListener;
import com.sun.enterprise.security.common.Util;
import com.sun.enterprise.util.LocalStringManagerImpl;


/**
 * CLI command to create Authentication Realm
 *
 * Usage: create-auth-realm --classname realm_class [--terse=false] 
 *        [--interactive=true] [--host localhost] [--port 4848|4849] 
 *        [--secure | -s] [--user admin_user] [--passwordfile file_name] 
 *        [--property (name=value)[:name=value]*] 
 *        [--echo=false] [--target target(Default server)] auth_realm_name
 *  
 * domain.xml element example
 * 
 *   
 *   
 * 
 *       Or
 * 
 * 
 *
 * @author Nandini Ektare
 */
@Service(name="create-auth-realm")
@PerLookup
@I18n("create.auth.realm")
@ExecuteOn({RuntimeType.DAS, RuntimeType.INSTANCE})
@TargetType({DAS,STANDALONE_INSTANCE,CLUSTER, CONFIG})
public class CreateAuthRealm implements AdminCommand, AdminCommandSecurity.Preauthorization {

    private final static LocalStringManagerImpl localStrings = new LocalStringManagerImpl(CreateAuthRealm.class);

    @Param(name = "classname")
    private String className;

    @Param(name = "authrealmname", primary = true)
    private String authRealmName;

    @Param(optional = true, name = "property", separator = ':')
    private Properties properties;

    @Param(name = "target", optional = true, defaultValue = DEFAULT_SERVER_INSTANCE_NAME)
    private String target;

    @Inject
    @Named(ServerEnvironment.DEFAULT_INSTANCE_NAME)
    private Config config;

    @Inject
    private Domain domain;

    // initialize the habitat in Util needed by Realm classes
    @Inject
    private Util util;

    @AccessRequired.NewChild(type = AuthRealm.class)
    private SecurityService securityService;

    @Override
    public boolean preAuthorization(AdminCommandContext context) {
        config = chooseConfig(domain, target, context.getActionReport());
        if (config == null) {
            return false;
        }
        
        securityService = config.getSecurityService();
        
        return ensureRealmIsNew(context.getActionReport());
    }

    /**
     * Executes the command with the command parameters passed as Properties where the keys are the paramter names and the
     * values the parameter values
     *
     * @param context information
     */
    public void execute(AdminCommandContext context) {
        ActionReport report = context.getActionReport();

        // No duplicate auth realms found. So add one.
        try {
            ConfigSupport.apply(new SingleConfigCode() {

                public Object run(SecurityService param) throws PropertyVetoException, TransactionFailure {
                    AuthRealm newAuthRealm = param.createChild(AuthRealm.class);
                    populateAuthRealmElement(newAuthRealm);
                    param.getAuthRealm().add(newAuthRealm);
                    
                    // In case of cluster instances, this is required to
                    // avoid issues with the listener's callback method
                    SecurityConfigListener.authRealmCreated(config, newAuthRealm);
                    
                    return newAuthRealm;
                }
            }, securityService);
        } catch (TransactionFailure e) {
            report.setMessage(
                    localStrings.getLocalString(
                            "create.auth.realm.fail", 
                            "Creation of Authrealm {0} failed", authRealmName) + "  " + 
                    e.getLocalizedMessage());
            report.setActionExitCode(FAILURE);
            report.setFailureCause(e);
            return;
        }

        report.setActionExitCode(SUCCESS);
    }

    private void populateAuthRealmElement(AuthRealm newAuthRealm) throws PropertyVetoException, TransactionFailure {
        newAuthRealm.setName(authRealmName);
        newAuthRealm.setClassname(className);
        
        if (properties != null) {
            for (Object propertyName : properties.keySet()) {
                Property newProperty = newAuthRealm.createChild(Property.class);
                newProperty.setName((String) propertyName);
                
                newProperty.setValue(properties.getProperty((String) propertyName));
                newAuthRealm.getProperty().add(newProperty);
            }
        }
    }

    private boolean ensureRealmIsNew(ActionReport report) {
        if (!isRealmNew(securityService, authRealmName)) {
            report.setMessage(localStrings.getLocalString(
                    "create.auth.realm.duplicatefound",
                    "Authrealm named {0} exists. Cannot add duplicate AuthRealm.", 
                    authRealmName));
            
            report.setActionExitCode(FAILURE);
            return false;
        }
        
        return true;
    }
}




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