com.liferay.portal.captcha.CaptchaImpl Maven / Gradle / Ivy
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Contains implementation for the portal services.
/**
* Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
*
* This library 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 library 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.
*/
package com.liferay.portal.captcha;
import com.liferay.portal.kernel.captcha.Captcha;
import com.liferay.portal.kernel.captcha.CaptchaException;
import com.liferay.portal.kernel.log.Log;
import com.liferay.portal.kernel.log.LogFactoryUtil;
import com.liferay.portal.kernel.security.pacl.DoPrivileged;
import com.liferay.portal.kernel.util.ClassUtil;
import com.liferay.portal.kernel.util.InstanceFactory;
import com.liferay.portal.kernel.util.PropsKeys;
import com.liferay.portal.util.ClassLoaderUtil;
import com.liferay.portal.util.PrefsPropsUtil;
import com.liferay.portal.util.PropsValues;
import java.io.IOException;
import javax.portlet.PortletRequest;
import javax.portlet.ResourceRequest;
import javax.portlet.ResourceResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* @author Brian Wing Shun Chan
*/
@DoPrivileged
public class CaptchaImpl implements Captcha {
@Override
public void check(HttpServletRequest request) throws CaptchaException {
_initialize();
_captcha.check(request);
}
@Override
public void check(PortletRequest portletRequest) throws CaptchaException {
_initialize();
_captcha.check(portletRequest);
}
@Override
public String getTaglibPath() {
_initialize();
return _captcha.getTaglibPath();
}
@Override
public boolean isEnabled(HttpServletRequest request)
throws CaptchaException {
_initialize();
return _captcha.isEnabled(request);
}
@Override
public boolean isEnabled(PortletRequest portletRequest)
throws CaptchaException {
_initialize();
return _captcha.isEnabled(portletRequest);
}
@Override
public void serveImage(
HttpServletRequest request, HttpServletResponse response)
throws IOException {
_initialize();
_captcha.serveImage(request, response);
}
@Override
public void serveImage(
ResourceRequest resourceRequest, ResourceResponse resourceResponse)
throws IOException {
_initialize();
_captcha.serveImage(resourceRequest, resourceResponse);
}
public void setCaptcha(Captcha captcha) {
_initialize();
if (captcha == null) {
if (_log.isInfoEnabled()) {
_log.info(
"Restoring " + ClassUtil.getClassName(_originalCaptcha));
}
_captcha = _originalCaptcha;
}
else {
if (_log.isInfoEnabled()) {
_log.info("Setting " + ClassUtil.getClassName(captcha));
}
_captcha = captcha;
}
}
private void _initialize() {
if (_captcha != null) {
return;
}
synchronized (this) {
if (_captcha != null) {
return;
}
try {
String captchaClassName = PrefsPropsUtil.getString(
PropsKeys.CAPTCHA_ENGINE_IMPL,
PropsValues.CAPTCHA_ENGINE_IMPL);
if (_log.isInfoEnabled()) {
_log.info("Initializing " + captchaClassName);
}
_captcha = (Captcha)InstanceFactory.newInstance(
ClassLoaderUtil.getPortalClassLoader(), captchaClassName);
_originalCaptcha = _captcha;
}
catch (Exception e) {
_log.error(e, e);
}
}
}
private static Log _log = LogFactoryUtil.getLog(CaptchaImpl.class);
private volatile Captcha _captcha;
private Captcha _originalCaptcha;
}