var ipfuck = {

		inited: false,

		init: function() {
			if (!this.inited) {
				if (this.get_pref('ipfuck_enabled') == true)
					this.register();

				this.inited = true;
			}
		},

		observe: function(subject, topic, data) {

		if (topic == "http-on-modify-request") {

			var channel = subject.QueryInterface(Components.interfaces.nsIChannel);

			if (!this.in_array(channel.originalURI.asciiHost, this.get_pref('white_list').split(','))) {
				var httpChannel = subject.QueryInterface(Components.interfaces.nsIHttpChannel);


				if (this.get_pref('synchronize')) {
					var ip2 = ip;
					var ip3 = ip;
				} else {
					var ip2 = this.get_ip();
					var ip3 = this.get_ip();
				}

				if (this.get_pref('xforwarded'))
					httpChannel.setRequestHeader("X-FORWARDED-FOR", ip, false);

				if (this.get_pref('via'))
					httpChannel.setRequestHeader("VIA", ip2, false);

				if (this.get_pref('clientip'))
					httpChannel.setRequestHeader("CLIENT-IP", ip3, false);
			}
		}
	},

	get observerService() {
		return Components.classes["@mozilla.org/observer-service;1"].getService(Components.interfaces.nsIObserverService);
	},

	register: function() {
		this.set_pref('ipfuck_enabled', true);
		document.getElementById('ipfuck-toolbar-button').className = 'toolbarpanel-menu-iconic ipfuck_enabled';
		this.observerService.addObserver(this, "http-on-modify-request", false);
	},

	unregister: function() {
		this.set_pref('ipfuck_enabled', false);
		document.getElementById('ipfuck-toolbar-button').className = 'toolbarpanel-menu-iconic ipfuck_disabled';
		this.observerService.addObserver(this, "http-on-modify-request", false);
	},

	toggle_state:function() {
			this.register();
                ip = parseInt(Math.round(Math.random() * parseInt(this.get_pref('ip_high_0') - this.get_pref('ip_low_0'))) + this.get_pref('ip_low_0')) + ".";
                ip += parseInt(Math.round(Math.random() * parseInt(this.get_pref('ip_high_1') - this.get_pref('ip_low_1'))) + this.get_pref('ip_low_1')) + ".";
                ip += parseInt(Math.round(Math.random() * parseInt(this.get_pref('ip_high_2') - this.get_pref('ip_low_2'))) + this.get_pref('ip_low_2')) + ".";
                ip += parseInt(Math.round(Math.random() * parseInt(this.get_pref('ip_high_3') - this.get_pref('ip_low_3'))) + this.get_pref('ip_low_3'));
	},

	get_ip: function() {

		if (this.get_pref('mode') == 'list') {
			var ips = this.get_pref('ip_list').split(',');

			return ips[Math.round(Math.random() * (ips.length - 1))];
		} else {
            if (this.get_pref('ipfuck_enabled')) {
                var ip = parseInt(Math.round(Math.random() * parseInt(this.get_pref('ip_high_0') - this.get_pref('ip_low_0'))) + this.get_pref('ip_low_0')) + ".";
                ip += parseInt(Math.round(Math.random() * parseInt(this.get_pref('ip_high_1') - this.get_pref('ip_low_1'))) + this.get_pref('ip_low_1')) + ".";
                ip += parseInt(Math.round(Math.random() * parseInt(this.get_pref('ip_high_2') - this.get_pref('ip_low_2'))) + this.get_pref('ip_low_2')) + ".";
                ip += parseInt(Math.round(Math.random() * parseInt(this.get_pref('ip_high_3') - this.get_pref('ip_low_3'))) + this.get_pref('ip_low_3'));
                qb = ip;
                return ip;
            } else {
            ip = qb;
            return ip;
            }
		}
	},

	in_array:function(needle, haystack) {
		for (var i = 0; i < haystack.length; i++) {
			if (haystack[i] == needle)
				return true;
		}
		return false;
	},

	get_pref: function(pref_name) {
		var prefs = Components.classes["@mozilla.org/preferences-service;1"]
					        .getService(Components.interfaces.nsIPrefService);
		prefs = prefs.getBranch("extensions.ipfuck.");

		var type = prefs.getPrefType(pref_name);

		if (type == 128)
			return prefs.getBoolPref(pref_name);
		else if (type == 32)
			return prefs.getCharPref(pref_name);
		else //type == 64
			return prefs.getIntPref(pref_name);
	},

	set_pref: function(pref_name, value) {
		var prefs = Components.classes["@mozilla.org/preferences-service;1"]
					        .getService(Components.interfaces.nsIPrefService);
		prefs = prefs.getBranch("extensions.ipfuck.");

		var type = prefs.getPrefType(pref_name);

		if (type == 128)
			return prefs.setBoolPref(pref_name, value);
		else if (type == 32)
			return prefs.setCharPref(pref_name, value);
		else //type == 64
			return prefs.setIntPref(pref_name, value);
	},

	addbutton: function() {
		var toolbar = document.getElementById("ipfuck-toolbar-button");
		var browserel = document.getElementById("nav-bar");
		if (browserel && !toolbar) {
			browserel.insertItem("ipfuck-toolbar-button");
			browserel.setAttribute("currentset", browserel.currentSet);
			document.persist("nav-bar", "currentset");
		}
	}
};

window.addEventListener("load", ipfuck.addbutton, false);