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The Enterprise Security API (ESAPI) project is an OWASP project to create simple strong security controls for every web platform. Security controls are not simple to build. You can read about the hundreds of pitfalls for unwary developers on the OWASP website. By providing developers with a set of strong controls, we aim to eliminate some of the complexity of creating secure web applications. This can result in significant cost savings across the SDLC.

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/**
 * OWASP Enterprise Security API (ESAPI)
 * 
 * This file is part of the Open Web Application Security Project (OWASP)
 * Enterprise Security API (ESAPI) project. For details, please see
 * http://www.owasp.org/index.php/ESAPI.
 *
 * Copyright (c) 2009 - The OWASP Foundation
 * 
 * The ESAPI is published by OWASP under the BSD license. You should read and accept the
 * LICENSE before you use, modify, and/or redistribute this software.
 * 
 * @author Arshan Dabirsiaghi Aspect Security
 * @created 2009
 */
package org.owasp.esapi.waf.rules;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.owasp.esapi.ESAPI;
import org.owasp.esapi.Logger;
import org.owasp.esapi.waf.actions.Action;
import org.owasp.esapi.waf.configuration.AppGuardianConfiguration;
import org.owasp.esapi.waf.internal.InterceptingHTTPServletResponse;

/**
 * This is the base class for the WAF rules.
 * @author Arshan Dabirsiaghi
 *
 */
public abstract class Rule {

	protected String id = "(no rule ID)";
	protected static Logger logger = ESAPI.getLogger(Rule.class);

	public abstract Action check( HttpServletRequest request, InterceptingHTTPServletResponse response, HttpServletResponse httpResponse );

	public void log( HttpServletRequest request, String message ) {
		logger.warning(Logger.SECURITY_FAILURE,"[IP=" + request.getRemoteAddr() +
				",Rule=" + this.getClass().getSimpleName() + ",ID="+id+"] " + message);
	}

	protected void setId(String id) {
		if ( id == null || "".equals(id) )
			return;

		this.id = id;
	}

	public String toString() {
		return "Rule:" + this.getClass().getName();
	}
}