gistfile1.txt

/**
* Library for Lightweight Seft-Protecting JavaScript
* By Phu H Phung 2008
* Version: 1.1a
* Last modified: 2008, Sept 16
*/
(function() {

	var _debug = true;		
/**
* The two following function is modified from 
* jQuery AOP - jQuery plugin to add features of aspect-oriented programming (AOP) to jQuery.
* http://jquery-aop.googlecode.com/
*
* Licensed under the MIT license:
* http://www.opensource.org/licenses/mit-license.php
*
*/	 

	var wrap = function(pointcut, Policy) {
		var source = (typeof(pointcut.target.prototype) != 'undefined') ? pointcut.target.prototype : pointcut.target;
		var method = pointcut.method
		var original = source[method];
		var aspect = function() {
				var invocation = { object: this, args: arguments };
				return Policy.apply(invocation.object, [{ arguments: invocation.args, method: method, proceed : 
					function() {
						return original.apply(invocation.object, invocation.args);
					}
				}] );
		};		
		source[method] = aspect;
		return aspect;
	};	
	var enforcePolicy = function(objectMethod, Policy){
		return wrap(objectMethod, Policy);
	}
	var debug = function(s){
		if (_debug){
			document.writeln(s);
		}
	};
//This anonymous function contains PropertyMonitor
//and security policy
(function(){
var SecurityStates = {		
	statestable: new Array(),	
	getState: function (state) {
		return this.statestable[state];
	},
	setState: function (state, val) {
		this.statestable[state] = val;
	},
	init: function () {
		if (this.statestable == null) {
			this.statestable = new Array ();
		}
		this.statestable.push (new Object());
		return (this.statestable.length - 1);		
	}
};
var PropertiesCache = {
	cachetable: new Array(),	
	getProperty: function (property) {
		return this.cachetable[property];
	},
	setProperty: function (property, val) {
		this.cachetable[property] = val;
	},		
	init: function () {
		if (this.cachetable == null) {
			this.cachetable = new Array ();
		}
		this.cachetable.push (new Object());
		return (this.cachetable.length - 1);	
		
	}
};
PropertiesCache.init();
var MonitorPropertyGet = function (source, property, gettingAdvice) {	
	var id = source + "." + property;	
	var val = PropertiesCache.getProperty(id);	
	if ( (val == 'undefined') || (val == null)){
		PropertiesCache.setProperty(id,eval(id));
	}
	var cmd = source +".__proto__.__defineGetter__('"+property+"',function(){"+	
				"gettingAdvice.apply(this,arguments);" +
				"return PropertiesCache.getProperty(id);})";
	eval(cmd);
};
var MonitorPropertySet = function (source, property, settingAdvice) {	
	var id = source + "." + property;
	var cmd = source +".__proto__.__defineSetter__('"+property+"',function(val){"+	
				"settingAdvice.apply(this,arguments);" +
				"PropertiesCache.setProperty(id,val);})";
	eval(cmd);
};
var MonitorProperty = function (source, property, gettingAdvice, settingAdvice) {
	MonitorPropertyGet(source, property, gettingAdvice);
	MonitorPropertySet(source, property, settingAdvice);
};
SecurityStates.init();
})();
})();