org.primefaces.component.captcha.CaptchaRenderer Maven / Gradle / Ivy
/*
* Copyright 2009-2014 PrimeTek.
*
* 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 org.primefaces.component.captcha;
import java.io.IOException;
import java.util.Map;
import java.util.logging.Logger;
import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.primefaces.renderkit.CoreRenderer;
public class CaptchaRenderer extends CoreRenderer {
private static final Logger logger = Logger.getLogger(CaptchaRenderer.class.getName());
private final static String CHALLENGE_FIELD = "recaptcha_challenge_field";
private final static String RESPONSE_FIELD = "recaptcha_response_field";
@Override
public void decode(FacesContext context, UIComponent component) {
Captcha captcha = (Captcha) component;
Map params = context.getExternalContext().getRequestParameterMap();
String challenge = params.get(CHALLENGE_FIELD);
String answer = params.get(RESPONSE_FIELD);
if(answer != null) {
if(answer.equals(""))
captcha.setSubmittedValue(answer);
else
captcha.setSubmittedValue(new Verification(challenge, answer));
} else {
captcha.setSubmittedValue("");
}
}
@Override
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
ResponseWriter writer = context.getResponseWriter();
Captcha captcha = (Captcha) component;
captcha.setRequired(true);
String protocol = captcha.isSecure() ? "https" : "http";
String publicKey = getPublicKey(context, captcha);
if(publicKey == null) {
throw new FacesException("Cannot find public key for catpcha, use primefaces.PUBLIC_CAPTCHA_KEY context-param to define one");
}
writer.startElement("script", null);
writer.writeAttribute("type", "text/javascript", null);
writer.write("var RecaptchaOptions = {");
writer.write("theme:\"" + captcha.getTheme() + "\"");
if(captcha.getTabindex() != 0) {
writer.write(",tabIndex:" + captcha.getTabindex());
}
writer.write("};");
writer.endElement("script");
writer.startElement("script", null);
writer.writeAttribute("type", "text/javascript", null);
writer.writeAttribute("src", protocol + "://www.google.com/recaptcha/api/challenge?k=" + publicKey + "&hl=" + captcha.getLanguage(), null);
writer.endElement("script");
writer.startElement("noscript", null);
writer.startElement("iframe", null);
writer.writeAttribute("src", protocol + "://www.google.com/recaptcha/api/noscript?k=" + publicKey + "&hl=" + captcha.getLanguage(), null);
writer.endElement("iframe");
writer.startElement("textarea", null);
writer.writeAttribute("id", CHALLENGE_FIELD, null);
writer.writeAttribute("name", CHALLENGE_FIELD, null);
writer.writeAttribute("rows", "3", null);
writer.writeAttribute("columns", "40", null);
writer.endElement("textarea");
writer.startElement("input", null);
writer.writeAttribute("id", RESPONSE_FIELD, null);
writer.writeAttribute("name", RESPONSE_FIELD, null);
writer.writeAttribute("type", "hidden", null);
writer.writeAttribute("value", "manual_challenge", null);
writer.endElement("input");
writer.endElement("noscript");
}
protected String getPublicKey(FacesContext context, Captcha captcha) {
return context.getExternalContext().getInitParameter(Captcha.PUBLIC_KEY);
}
}
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