/*

  * Copyright (c) 2003-2011, Simon Brown

  * All rights reserved.

  *

  * Redistribution and use in source and binary forms, with or without

  * modification, are permitted provided that the following conditions are met:

  *

  *   - Redistributions of source code must retain the above copyright

  *     notice, this list of conditions and the following disclaimer.

  *

  *   - Redistributions in binary form must reproduce the above copyright

  *     notice, this list of conditions and the following disclaimer in

  *     the documentation and/or other materials provided with the

  *     distribution.

  *

  *   - Neither the name of Pebble nor the names of its contributors may

  *     be used to endorse or promote products derived from this software

  *     without specific prior written permission.

  *

  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE

  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

  * POSSIBILITY OF SUCH DAMAGE.

  */

 package net.sourceforge.pebble.web.tagext;

 import net.sourceforge.pebble.web.security.SecurityTokenValidatorImpl;

 import javax.servlet.jsp.JspException;

 import javax.servlet.jsp.JspWriter;

 import javax.servlet.jsp.tagext.TagSupport;

 import java.io.IOException;

 /**

  * Tag that writes the security token as a hidden input parameter to the request

  * @author James Roper

  */

 public class SecurityTokenTag extends TagSupport {

   /** true if we're rendering for a query */

   private boolean query;

   @Override

   public int doStartTag() throws JspException {

     JspWriter out = pageContext.getOut();

     String token = (String) pageContext.getRequest().getAttribute(SecurityTokenValidatorImpl.PEBBLE_SECURITY_TOKEN_PARAMETER);

     if (token != null) {

       try {

         if (query) {

           out.append(SecurityTokenValidatorImpl.PEBBLE_SECURITY_TOKEN_PARAMETER).append("=").append(token);

         } else {

           out.append("<input type=\"hidden\" name=\"").append(SecurityTokenValidatorImpl.PEBBLE_SECURITY_TOKEN_PARAMETER);

           out.append("\" value=\"").append(token).append("\"/>");

         }

       } catch (IOException ioe) {

         throw new JspException(ioe);

       }

     }

     return SKIP_BODY;

   }

   public void setQuery(boolean query) {

     this.query = query;

   }

 }