com.mobileman.projecth.web.util.CaptchaUtil.java Source code

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Here is the source code for com.mobileman.projecth.web.util.CaptchaUtil.java

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/*******************************************************************************
 * Copyright 2015 MobileMan GmbH
 * www.mobileman.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.mobileman.projecth.web.util;

import javax.servlet.http.HttpServletRequest;

import nl.captcha.Captcha;

import org.springframework.ui.Model;

public class CaptchaUtil {

    private static final String KEY_ERROR = "CAPTCHA_ERROR";

    static public boolean verify(HttpServletRequest request, Model model) {
        Captcha captcha = (Captcha) request.getSession().getAttribute(Captcha.NAME);
        String answer = request.getParameter("captchaAnswer");
        if (captcha.isCorrect(answer)) {
            return true;
        }
        model.addAttribute(KEY_ERROR, true);
        return false;
    }

    static public boolean verify(HttpServletRequest request, Model model, String answer) {
        Captcha captcha = (Captcha) request.getSession().getAttribute(Captcha.NAME);
        if (captcha.isCorrect(answer)) {
            return true;
        }
        model.addAttribute(KEY_ERROR, true);
        return false;
    }

    public static void fillConversationWithError(Conversation conversation) {
        conversation.put(KEY_ERROR, true);
    }
}