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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 java.util.Collection;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.Map;

import org.owasp.esapi.waf.configuration.AppGuardianConfiguration;

/**
 * This is a small utility class for use by Rule subclasses.
 * @author Arshan Dabirsiaghi
 *
 */
public class RuleUtil {

	public static boolean isInList(Map m, String s) {

		Iterator it = m.keySet().iterator();

		while( it.hasNext() ) {
			String key = (String)it.next();
			if ( key.equals(s) ) {
				return true;
			}
		}

		return false;
	}

	public static boolean isInList(Collection c, String s) {

		Iterator it = c.iterator();

		while(it.hasNext()) {

			Object o = it.next();

			if ( o instanceof String ) {

				if ( s.equals((String)o)) {
					return true;
				}

			} else if ( o instanceof Integer ) {

				try {
					if ( Integer.parseInt(s) == ((Integer)o).intValue() ) {
						return true;
					}
				} catch (Exception e) {}

			} else if ( o instanceof Long ) {

				try {
					if ( Long.parseLong(s) == ((Long)o).longValue() ) {
						return true;
					}
				} catch (Exception e) {}

			} else if ( o instanceof Double ) {

				try {
					if ( Double.compare(Double.parseDouble(s), ((Double)o).doubleValue()) ==  0 ) {
						return true;
					}
				} catch (Exception e) {}
			}

		}

		return false;
	}

	/*
	 * Enumeration
	 */
	public static boolean isInList(Enumeration en, String s) {

		for(; en.hasMoreElements();) {

			Object o = en.nextElement();

			if ( o instanceof String ) {

				if ( s.equals((String)o)) {
					return true;
				}

			} else if ( o instanceof Integer ) {

				try {
					if ( Integer.parseInt(s) == ((Integer)o).intValue() ) {
						return true;
					}
				} catch (Exception e) {}

			} else if ( o instanceof Long ) {

				try {
					if ( Long.parseLong(s) == ((Long)o).longValue() ) {
						return true;
					}
				} catch (Exception e) {}

			} else if ( o instanceof Double ) {

				try {
					if ( Double.compare(Double.parseDouble(s), ((Double)o).doubleValue()) ==  0 ) {
						return true;
					}
				} catch (Exception e) {}
			}

		}

		return false;
	}

	public static boolean testValue(String s, String test, int operator) {

		switch(operator) {
			case AppGuardianConfiguration.OPERATOR_EQ:

				return test.equals(s);

			case AppGuardianConfiguration.OPERATOR_CONTAINS:

				return test.contains(s);

		}

		return false;
	}

}