com.remediatetheflag.global.actions.auth.user.GetGuacTokenForExerciseAction.java Source code

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Here is the source code for com.remediatetheflag.global.actions.auth.user.GetGuacTokenForExerciseAction.java

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/*
 *  
 * REMEDIATE THE FLAG
 * Copyright 2018 - Andrea Scaduto 
 * remediatetheflag@gmail.com
 * 
 * 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 com.remediatetheflag.global.actions.auth.user;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.remediatetheflag.global.actions.IAction;
import com.remediatetheflag.global.messages.MessageGenerator;
import com.remediatetheflag.global.model.ExerciseInstance;
import com.remediatetheflag.global.model.User;
import com.remediatetheflag.global.persistence.HibernatePersistenceFacade;
import com.remediatetheflag.global.utils.Constants;
import com.remediatetheflag.global.utils.GuacamoleHelper;

public class GetGuacTokenForExerciseAction extends IAction {
    private HibernatePersistenceFacade hpc = new HibernatePersistenceFacade();
    private GuacamoleHelper guacHelper = new GuacamoleHelper();

    @Override
    public void doAction(HttpServletRequest request, HttpServletResponse response) throws Exception {
        User sessionUser = (User) request.getSession().getAttribute(Constants.ATTRIBUTE_SECURITY_CONTEXT);

        JsonObject json = (JsonObject) request.getAttribute(Constants.REQUEST_JSON);
        JsonElement jsonElement = json.get(Constants.ACTION_PARAM_ID);
        Integer idExercise = jsonElement.getAsInt();

        ExerciseInstance exercise = hpc.getActiveExerciseInstanceForUserWithGuac(sessionUser.getIdUser(),
                idExercise);

        String token = null;
        if (exercise.getGuac() != null) {
            token = guacHelper.getFreshToken(exercise.getGuac().getGateway(), exercise.getGuac().getUsername(),
                    exercise.getGuac().getPassword());
        } else {
            logger.error("Could not find active ExerciseInstance " + idExercise + " for user: "
                    + sessionUser.getIdUser());
            MessageGenerator.sendErrorMessage("NotFound", response);
            return;
        }

        if (null != token) {
            MessageGenerator.sendTokenMessage(exercise.getIdExerciseInstance(),
                    exercise.getGuac().getGateway().getFqdn(), exercise.getGuac().getUsername(), token, 0,
                    response);
        } else {
            logger.error("Could not get GuacToken for ExerciseInstance " + idExercise + " for user: "
                    + sessionUser.getIdUser());
            MessageGenerator.sendErrorMessage("CouldNotRetrieveToken", response);
        }
    }
}