<?php
	// -----------------------------------------------------------------------
	// QQwry.dat格式分析和查詢IP位置的PHP程序 
	// By Strongc http://strongc.51.net/d2x/ 
	// 轉(zhuǎn)載時不要去掉我的名字和我的主頁鏈接，謝謝！ 
	// 以前的追捕數(shù)據(jù)庫太大，而且很久沒有更新了。 
	// 所以我想到利用QQwry.dat這個文件查詢IP所在位置，
	// QQwry.dat 在很多地方都能找到，一般看IP地址的QQ壓縮包中都有。 
	// -----------------------------------------------------------------------
	
define('QQWRY' , $qqwry_root_path . 'data/qqWry.dat' ) ;

function IpToInt($Ip) {
    $array=explode('.',$Ip);
    $Int=($array[0] * 256*256*256) + ($array[1]*256*256) + ($array[2]*256) + $array[3];
    return $Int;
}

function IntToIp($Int) {
    $b1=($Int & 0xff000000)>>24;
    if ($b1<0) $b1+=0x100;
    $b2=($Int & 0x00ff0000)>>16;
    if ($b2<0) $b2+=0x100;
    $b3=($Int & 0x0000ff00)>>8;
    if ($b3<0) $b3+=0x100;
    $b4= $Int & 0x000000ff;
    if ($b4<0) $b4+=0x100;
    $Ip=$b1.'.'.$b2.'.'.$b3.'.'.$b4;
    return $Ip;
}


class TQQwry
{
    var $StartIP = 0;
    var $EndIP   = 0;
    var $Country = '';
    var $Local   = '';

    var $CountryFlag = 0; // 標識 Country位置
                          // 0x01,隨后3字節(jié)為Country偏移,沒有Local
                          // 0x02,隨后3字節(jié)為Country偏移，接著是Local
                          // 其他,Country,Local,Local有類似的壓縮?？赡芏嘀匾谩?    var $fp;

    var $FirstStartIp = 0;
    var $LastStartIp = 0;
    var $EndIpOff = 0 ;

    function getStartIp ( $RecNo ) {
        $offset = $this->FirstStartIp + $RecNo * 7 ;
        @fseek ( $this->fp , $offset , SEEK_SET ) ;
        $buf = fread ( $this->fp , 7 ) ;
        $this->EndIpOff = ord($buf[4]) + (ord($buf[5])*256) + (ord($buf[6])* 256*256);
        $this->StartIp = ord($buf[0]) + (ord($buf[1])*256) + (ord($buf[2])*256*256) + (ord($buf[3])*256*256*256);
        return $this->StartIp ;
    }

    function getEndIp ( ) {
        @fseek ( $this->fp , $this->EndIpOff , SEEK_SET ) ;
        $buf = fread ( $this->fp , 5 ) ;
        $this->EndIp = ord($buf[0]) + (ord($buf[1])*256) + (ord($buf[2])*256*256) + (ord($buf[3])*256*256*256);
        $this->CountryFlag = ord ( $buf[4] ) ;
        return $this->EndIp ;
    }

    function getCountry ( ) {

        switch ( $this->CountryFlag ) {
            case 1:
            case 2:
                $this->Country = $this->getFlagStr ( $this->EndIpOff+4) ;
                //echo sprintf('EndIpOffset=(%x)',$this->EndIpOff );
                $this->Local = ( 1 == $this->CountryFlag )? '' : $this->getFlagStr ( $this->EndIpOff+8);
                break ;
            default :
                $this->Country = $this->getFlagStr ($this->EndIpOff+4) ;
                $this->Local =   $this->getFlagStr ( ftell ( $this->fp )) ;

        }
    }


    function getFlagStr ( $offset )
    {

        $flag = 0 ;
        while ( 1 ){
            @fseek ( $this->fp , $offset , SEEK_SET ) ;
            $flag = ord ( fgetc ( $this->fp ) ) ;
            if ( $flag == 1 || $flag == 2 ) {
                $buf = fread ($this->fp , 3 ) ;
                if ($flag == 2 ){
                    $this->CountryFlag = 2 ;
                    $this->EndIpOff = $offset - 4 ;
                }
                $offset = ord($buf[0]) + (ord($buf[1])*256) + (ord($buf[2])* 256*256);
            }else{
                break ;
            }

        }
        if ( $offset < 12 )
            return '';
        @fseek($this->fp , $offset , SEEK_SET ) ;
        return $this->getStr();
    }
    function getStr ( )
    {
        $str = '' ;
        while ( 1 ) {
            $c = fgetc ( $this->fp ) ;
            if ( ord ( $c[0] ) == 0  )
               break ;
            $str .= $c ;
        }
        return $str ;
    }


    function qqwry ($dotip) {

        $nRet;
        $ip = IpToInt ( $dotip );

        $this->fp= @fopen(QQWRY, "rb");
        if ($this->fp == NULL) {
              $szLocal= "OpenFileError";
            return 1;

          }
          @fseek ( $this->fp , 0 , SEEK_SET ) ;
        $buf = fread ( $this->fp , 8 ) ;
        $this->FirstStartIp = ord($buf[0]) + (ord($buf[1])*256) + (ord($buf[2])*256*256) + (ord($buf[3])*256*256*256);
        $this->LastStartIp  = ord($buf[4]) + (ord($buf[5])*256) + (ord($buf[6])*256*256) + (ord($buf[7])*256*256*256);

        $RecordCount= floor( ( $this->LastStartIp - $this->FirstStartIp ) / 7);
        if ($RecordCount <= 1){
            $this->Country = "FileDataError";
            fclose ( $this->fp ) ;
            return 2 ;
        }

          $RangB= 0;
        $RangE= $RecordCount;
        // Match ...
        while ($RangB < $RangE-1)
        {
          $RecNo= floor(($RangB + $RangE) / 2);
          $this->getStartIp ( $RecNo ) ;

            if ( $ip == $this->StartIp )
            {
                $RangB = $RecNo ;
                break ;
            }
          if ( $ip > $this->StartIp)
            $RangB= $RecNo;
          else
            $RangE= $RecNo;
        }
        $this->getStartIp ( $RangB ) ;
        $this->getEndIp ( ) ;

        if ( ( $this->StartIp  <= $ip ) && ( $this->EndIp >= $ip ) ){
            $nRet = 0 ;
            $this->getCountry () ;
            //這樣不太好..............所以..........
            $this->Local = str_replace("（我們一定要解放臺灣！?。。?quot;, "", $this->Local);

        }else {
            $nRet = 3 ;
            $this->Country = '未知' ;
            $this->Local = '' ;
        }
        fclose ( $this->fp ) ;
        return $nRet ;
    }
}


function ip2location ( $ip )
{
    $wry = new TQQwry ;
    $nRet = $wry->qqwry ( $ip );
    //可以利用 $nRet做一些事情，我是讓他自動記錄未知IP到一個表,代碼就不寫了。
	return $wry->Country.$wry->Local ;
}

?>