package {
import flash.display.Sprite;
import flash.errors.*;
import flash.events.*;
import flash.net.Socket;
 
public class FetchPR extends Sprite
{
	public const GOOGLE_MAGIC:Number = 0xE6359A60;
	public var resultPR:Number = 0;
	public var callback:Function;
	private var sock:Socket;
 
	public function zeroFill(a:Number, b:Number):Number
	{
		var z:Number = 0x80000000;
		var sa:Number = a;
		var sb:Number = b;
 
		if (z & sa) {
			sa = (sa>>1);
			sa &= (~z);
			sa |= 0x40000000;
			sa = (sa>>(sb-1));
		}
		else {
			sa = (sa>>sb);
		}
		return sa;
	}
 
	public function mixa(a:Number,b:Number,c:Number):Array
	{
		var sa:Number = a;
		var sb:Number = b;
		var sc:Number = c;
 
		sa -= sb; sa -= sc; sa ^= (zeroFill(sc,13));
		sb -= sc; sb -= sa; sb ^= (sa << 8);
		sc -= sa; sc -= sb; sc ^= (zeroFill(sb,13));
		sa -= sb; sa -= sc; sa ^= (zeroFill(sc,12));
		sb -= sc; sb -= sa; sb ^= (sa<<16);
		sc -= sa; sc -= sb; sc ^= (zeroFill(sb,5));
		sa -= sb; sa -= sc; sa ^= (zeroFill(sc,3));
		sb -= sc; sb -= sa; sb ^= (sa<<10);
		sc -= sa; sc -= sb; sc ^= (zeroFill(sb,15));
 
		return new Array(sa,sb,sc);
	}
 
	public function GoogleCH(url:Array, length:Number = 0, init:Number=GOOGLE_MAGIC):Number
	{
		if (length == 0) {
			length = url.length;
		}
		var sa:Number = 0x9E3779B9;
		var sb:Number = 0x9E3779B9;
		var sc:Number = init;
		var k:Number = 0;
		var len:Number = length;
		var mix:Array;
 
		while(len >= 12) {
			sa += (url[k+0] +(url[k+1]<<8) +(url[k+2]<<16) +(url[k+3]<<24));
			sb += (url[k+4] +(url[k+5]<<8) +(url[k+6]<<16) +(url[k+7]<<24));
			sc += (url[k+8] +(url[k+9]<<8) +(url[k+10]<<16)+(url[k+11]<<24));
			mix = mixa(sa,sb,sc);
			sa = mix[0]; sb = mix[1]; sc = mix[2];
			k += 12;
			len -= 12;
		}
		sc += length;
		switch (len) {
		case 11: sc+=(url[k+10]<<24);
		case 10: sc+=(url[k+9]<<16);
		case 9 : sc+=(url[k+8]<<8);
		case 8 : sb+=(url[k+7]<<24);
		case 7 : sb+=(url[k+6]<<16);
		case 6 : sb+=(url[k+5]<<8);
		case 5 : sb+=(url[k+4]);
		case 4 : sa+=(url[k+3]<<24);
		case 3 : sa+=(url[k+2]<<16);
		case 2 : sa+=(url[k+1]<<8);
		case 1 : sa+=(url[k+0]);
		}
		mix = mixa(sa,sb,sc);
		return mix[2];
	}
 
	public function strord(str:String):Array
	{
		var result:Array = new Array();
 
		for (var i:Number = 0; i < str.length; i++) {
			result[i] = str.charCodeAt(i);
		}
 
		return result;
	}
 
	public function getPR(url:String):void
	{
		sock = new Socket("www.google.com", 80);
		url = "info:" + url;
 
		var ch:Number = GoogleCH(strord(url));
		var urlstring:String = "/search?client=navclient-auto&ch=6" + ch + "&features=Rank&q=" + url;
 
		sock.writeUTFBytes("GET " + urlstring + " HTTP/1.0
");
		sock.writeUTFBytes("Host: toolbarqueries.google.com
");
		sock.writeUTFBytes("User-Agent: Mozilla/4.0 (compatible; GoogleToolbar 2.0.114.9-big; Linux 2.6)
");
		sock.writeUTFBytes("Connection: Close
 
");
		sock.flush();
		sock.addEventListener(ProgressEvent.SOCKET_DATA, socketDataHandler);
	}
 
	private function socketDataHandler(event:ProgressEvent):void 
	{
		var res:String = sock.readUTFBytes(sock.bytesAvailable);
		var offset:Number = res.lastIndexOf("Rank");
		res = res.substr(offset);
		var result:Array = res.split(":");
		resultPR = result[2];
		callback.call(resultPR);
	}
 
	public function FetchPR()
	{
	}
}
 
}