Author: emuckenhuber Date: 2007-08-21 13:08:08 -0400 (Tue, 21 Aug 2007) New Revision: 8018 Added: trunk/core-identity/src/main/org/jboss/portal/core/identity/services/captcha/ trunk/core-identity/src/main/org/jboss/portal/core/identity/services/captcha/ImageCaptchaServlet.java trunk/core-identity/src/main/org/jboss/portal/core/identity/services/captcha/JCaptchaService.java Log: jcaptcha services commit Added: trunk/core-identity/src/main/org/jboss/portal/core/identity/services/captcha/ImageCaptchaServlet.java =================================================================== --- trunk/core-identity/src/main/org/jboss/portal/core/identity/services/captcha/ImageCaptchaServlet.java (rev 0) +++ trunk/core-identity/src/main/org/jboss/portal/core/identity/services/captcha/ImageCaptchaServlet.java 2007-08-21 17:08:08 UTC (rev 8018) @@ -0,0 +1,95 @@ +/****************************************************************************** + * JBoss, a division of Red Hat * + * Copyright 2006, Red Hat Middleware, LLC, and individual * + * contributors as indicated by the @authors tag. See the * + * copyright.txt in the distribution for a full listing of * + * individual contributors. * + * * + * This is free software; you can redistribute it and/or modify it * + * under the terms of the GNU Lesser General Public License as * + * published by the Free Software Foundation; either version 2.1 of * + * the License, or (at your option) any later version. * + * * + * This software is distributed in the hope that it will be useful, * + * but WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * + * Lesser General Public License for more details. * + * * + * You should have received a copy of the GNU Lesser General Public * + * License along with this software; if not, write to the Free * + * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * + * 02110-1301 USA, or see the FSF site: http://www.fsf.org. * + ******************************************************************************/ +package org.jboss.portal.core.identity.services.captcha; + +import com.octo.captcha.service.CaptchaServiceException; +import com.sun.image.codec.jpeg.JPEGCodec; +import com.sun.image.codec.jpeg.JPEGImageEncoder; + +import javax.servlet.ServletConfig; +import javax.servlet.ServletException; +import javax.servlet.ServletOutputStream; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; + + + + +import java.awt.image.BufferedImage; +import java.io.ByteArrayOutputStream; +import java.io.IOException; + +/** + * @author <a href="mailto:emuckenh@redhat.com">Emanuel Muckenhuber</a> + * @version $Revision$ + */ +public class ImageCaptchaServlet extends HttpServlet { + + + public void init(ServletConfig servletConfig) throws ServletException { + + super.init(servletConfig); + + } + + protected void doGet(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws ServletException, IOException { + + byte[] captchaChallengeAsJpeg = null; + // the output stream to render the captcha image as jpeg into + ByteArrayOutputStream jpegOutputStream = new ByteArrayOutputStream(); + try { + // get the session id that will identify the generated captcha. + //the same id must be used to validate the response, the session id is a good candidate! + String captchaId = httpServletRequest.getSession().getId(); + // call the ImageCaptchaService getChallenge method + BufferedImage challenge = + JCaptchaService.getInstance().getImageChallengeForID(captchaId, + httpServletRequest.getLocale()); + + // a jpeg encoder + JPEGImageEncoder jpegEncoder = + JPEGCodec.createJPEGEncoder(jpegOutputStream); + jpegEncoder.encode(challenge); + } catch (IllegalArgumentException e) { + httpServletResponse.sendError(HttpServletResponse.SC_NOT_FOUND); + return; + } catch (CaptchaServiceException e) { + httpServletResponse.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR); + return; + } + + captchaChallengeAsJpeg = jpegOutputStream.toByteArray(); + + // flush it in the response + httpServletResponse.setHeader("Cache-Control", "no-store"); + httpServletResponse.setHeader("Pragma", "no-cache"); + httpServletResponse.setDateHeader("Expires", 0); + httpServletResponse.setContentType("image/jpeg"); + ServletOutputStream responseOutputStream = + httpServletResponse.getOutputStream(); + responseOutputStream.write(captchaChallengeAsJpeg); + responseOutputStream.flush(); + responseOutputStream.close(); + } +} \ No newline at end of file Added: trunk/core-identity/src/main/org/jboss/portal/core/identity/services/captcha/JCaptchaService.java =================================================================== --- trunk/core-identity/src/main/org/jboss/portal/core/identity/services/captcha/JCaptchaService.java (rev 0) +++ trunk/core-identity/src/main/org/jboss/portal/core/identity/services/captcha/JCaptchaService.java 2007-08-21 17:08:08 UTC (rev 8018) @@ -0,0 +1,51 @@ +/****************************************************************************** + * JBoss, a division of Red Hat * + * Copyright 2006, Red Hat Middleware, LLC, and individual * + * contributors as indicated by the @authors tag. See the * + * copyright.txt in the distribution for a full listing of * + * individual contributors. * + * * + * This is free software; you can redistribute it and/or modify it * + * under the terms of the GNU Lesser General Public License as * + * published by the Free Software Foundation; either version 2.1 of * + * the License, or (at your option) any later version. * + * * + * This software is distributed in the hope that it will be useful, * + * but WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * + * Lesser General Public License for more details. * + * * + * You should have received a copy of the GNU Lesser General Public * + * License along with this software; if not, write to the Free * + * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * + * 02110-1301 USA, or see the FSF site: http://www.fsf.org. * + ******************************************************************************/ +package org.jboss.portal.core.identity.services.captcha; + +import java.awt.image.BufferedImage; + +import com.octo.captcha.service.image.DefaultManageableImageCaptchaService; +import com.octo.captcha.service.image.ImageCaptchaService; + +/** + * @author <a href="mailto:emuckenh@redhat.com">Emanuel Muckenhuber</a> + * @version $Revision$ + */ +public class JCaptchaService +{ + + private static ImageCaptchaService instance = new DefaultManageableImageCaptchaService(); + + public static ImageCaptchaService getInstance() + { + return instance; + } + + public BufferedImage challenge(String challengeId) + { + return instance.getImageChallengeForID(challengeId); + } + + +} +