cherry.foundation.onetimetoken.OneTimeTokenTag.java Source code

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Here is the source code for cherry.foundation.onetimetoken.OneTimeTokenTag.java

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/*
 * Copyright 2014,2015 agwlvssainokuni
 *
 * 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 cherry.foundation.onetimetoken;

import static com.google.common.html.HtmlEscapers.htmlEscaper;

import java.text.MessageFormat;

import javax.servlet.http.HttpServletRequest;

import org.springframework.web.servlet.tags.RequestContextAwareTag;

public class OneTimeTokenTag extends RequestContextAwareTag {

    private static final long serialVersionUID = 1L;

    private String template = "<input type=\"hidden\" name=\"{0}\" value=\"{1}\" />";

    public void setTemplate(String template) {
        this.template = template;
    }

    @Override
    protected int doStartTagInternal() throws Exception {
        OneTimeTokenIssuer issuer = getRequestContext().getWebApplicationContext()
                .getBean(OneTimeTokenIssuer.class);
        HttpServletRequest request = (HttpServletRequest) pageContext.getRequest();
        OneTimeToken token = issuer.newToken(request);
        pageContext.getOut().write(handleToken(token));
        return SKIP_BODY;
    }

    private String handleToken(OneTimeToken token) {
        return MessageFormat.format(template, htmlEscaper().escape(token.getName()),
                htmlEscaper().escape(token.getValue()));
    }

}