/*
* Copyright 2002-2014 the original author or authors.
*
* 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.springframework.security.taglibs.csrf;
import org.springframework.security.web.csrf.CsrfToken;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.TagSupport;
import java.io.IOException;
/**
* An abstract tag for handling CSRF operations.
*
* @since 3.2.2
* @author Nick Williams
*/
abstract class AbstractCsrfTag extends TagSupport {
@Override
public int doEndTag() throws JspException {
CsrfToken token = (CsrfToken)this.pageContext.getRequest().getAttribute(CsrfToken.class.getName());
if (token != null) {
try {
this.pageContext.getOut().write(this.handleToken(token));
} catch (IOException e) {
throw new JspException(e);
}
}
return EVAL_PAGE;
}
protected abstract String handleToken(CsrfToken token);
}