CaptchaController.java

/*
 Copyright 2006 - 2010 Under Dusken

 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 no.dusken.aranea.web.control;

import com.octo.captcha.service.image.ImageCaptchaService;
import org.springframework.beans.factory.annotation.Required;
import org.springframework.web.bind.ServletRequestUtils;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;

import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.awt.image.BufferedImage;
import java.io.File;
import java.util.HashMap;
import java.util.Map;

/**
 * Captcha to the rescue against spammers
 */
public class CaptchaController extends AbstractController {


    private ImageCaptchaService imageCaptchaService;

    protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception {

        String captchaID = ServletRequestUtils.getRequiredStringParameter(request, "captchaID");

        BufferedImage image = imageCaptchaService.getImageChallengeForID(captchaID);

        Map<String, Object> map = new HashMap<String, Object>();

        File tmpFile = File.createTempFile("temp", "jpg");

        // TODO: Is there a better way?
        ImageIO.write(image, "JPG", tmpFile);

        map.put("file", tmpFile);
        map.put("deleteFile", true);
        return new ModelAndView("fileView", map);
    }

    @Required
    public void setImageCaptchaService(ImageCaptchaService imageCaptchaService) {
        this.imageCaptchaService = imageCaptchaService;
    }
}