mirror of
https://e.coding.net/circlecloud/MinecraftAccount.git
synced 2024-11-17 00:58:55 +00:00
2003fda7cb
Signed-off-by: j502647092 <jtb1@163.com>
233 lines
8.6 KiB
PHP
233 lines
8.6 KiB
PHP
<?php
|
||
// +----------------------------------------------------------------------
|
||
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
|
||
// +----------------------------------------------------------------------
|
||
// | Copyright (c) 2009 http://thinkphp.cn All rights reserved.
|
||
// +----------------------------------------------------------------------
|
||
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
|
||
// +----------------------------------------------------------------------
|
||
// | Author: liu21st <liu21st@gmail.com>
|
||
// +----------------------------------------------------------------------
|
||
namespace Org\Net;
|
||
/**
|
||
* IP 地理位置查询类 修改自 CoolCode.CN
|
||
* 由于使用UTF8编码 如果使用纯真IP地址库的话 需要对返回结果进行编码转换
|
||
* @author liu21st <liu21st@gmail.com>
|
||
*/
|
||
class IpLocation {
|
||
/**
|
||
* QQWry.Dat文件指针
|
||
*
|
||
* @var resource
|
||
*/
|
||
private $fp;
|
||
|
||
/**
|
||
* 第一条IP记录的偏移地址
|
||
*
|
||
* @var int
|
||
*/
|
||
private $firstip;
|
||
|
||
/**
|
||
* 最后一条IP记录的偏移地址
|
||
*
|
||
* @var int
|
||
*/
|
||
private $lastip;
|
||
|
||
/**
|
||
* IP记录的总条数(不包含版本信息记录)
|
||
*
|
||
* @var int
|
||
*/
|
||
private $totalip;
|
||
|
||
/**
|
||
* 构造函数,打开 QQWry.Dat 文件并初始化类中的信息
|
||
*
|
||
* @param string $filename
|
||
* @return IpLocation
|
||
*/
|
||
public function __construct($filename = "UTFWry.dat") {
|
||
$this->fp = 0;
|
||
if (($this->fp = fopen(dirname(__FILE__).'/'.$filename, 'rb')) !== false) {
|
||
$this->firstip = $this->getlong();
|
||
$this->lastip = $this->getlong();
|
||
$this->totalip = ($this->lastip - $this->firstip) / 7;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 返回读取的长整型数
|
||
*
|
||
* @access private
|
||
* @return int
|
||
*/
|
||
private function getlong() {
|
||
//将读取的little-endian编码的4个字节转化为长整型数
|
||
$result = unpack('Vlong', fread($this->fp, 4));
|
||
return $result['long'];
|
||
}
|
||
|
||
/**
|
||
* 返回读取的3个字节的长整型数
|
||
*
|
||
* @access private
|
||
* @return int
|
||
*/
|
||
private function getlong3() {
|
||
//将读取的little-endian编码的3个字节转化为长整型数
|
||
$result = unpack('Vlong', fread($this->fp, 3).chr(0));
|
||
return $result['long'];
|
||
}
|
||
|
||
/**
|
||
* 返回压缩后可进行比较的IP地址
|
||
*
|
||
* @access private
|
||
* @param string $ip
|
||
* @return string
|
||
*/
|
||
private function packip($ip) {
|
||
// 将IP地址转化为长整型数,如果在PHP5中,IP地址错误,则返回False,
|
||
// 这时intval将Flase转化为整数-1,之后压缩成big-endian编码的字符串
|
||
return pack('N', intval(ip2long($ip)));
|
||
}
|
||
|
||
/**
|
||
* 返回读取的字符串
|
||
*
|
||
* @access private
|
||
* @param string $data
|
||
* @return string
|
||
*/
|
||
private function getstring($data = "") {
|
||
$char = fread($this->fp, 1);
|
||
while (ord($char) > 0) { // 字符串按照C格式保存,以\0结束
|
||
$data .= $char; // 将读取的字符连接到给定字符串之后
|
||
$char = fread($this->fp, 1);
|
||
}
|
||
return $data;
|
||
}
|
||
|
||
/**
|
||
* 返回地区信息
|
||
*
|
||
* @access private
|
||
* @return string
|
||
*/
|
||
private function getarea() {
|
||
$byte = fread($this->fp, 1); // 标志字节
|
||
switch (ord($byte)) {
|
||
case 0: // 没有区域信息
|
||
$area = "";
|
||
break;
|
||
case 1:
|
||
case 2: // 标志字节为1或2,表示区域信息被重定向
|
||
fseek($this->fp, $this->getlong3());
|
||
$area = $this->getstring();
|
||
break;
|
||
default: // 否则,表示区域信息没有被重定向
|
||
$area = $this->getstring($byte);
|
||
break;
|
||
}
|
||
return $area;
|
||
}
|
||
|
||
/**
|
||
* 根据所给 IP 地址或域名返回所在地区信息
|
||
*
|
||
* @access public
|
||
* @param string $ip
|
||
* @return array
|
||
*/
|
||
public function getlocation($ip='') {
|
||
if (!$this->fp) return null; // 如果数据文件没有被正确打开,则直接返回空
|
||
if(empty($ip)) $ip = get_client_ip();
|
||
$location['ip'] = gethostbyname($ip); // 将输入的域名转化为IP地址
|
||
$ip = $this->packip($location['ip']); // 将输入的IP地址转化为可比较的IP地址
|
||
// 不合法的IP地址会被转化为255.255.255.255
|
||
// 对分搜索
|
||
$l = 0; // 搜索的下边界
|
||
$u = $this->totalip; // 搜索的上边界
|
||
$findip = $this->lastip; // 如果没有找到就返回最后一条IP记录(QQWry.Dat的版本信息)
|
||
while ($l <= $u) { // 当上边界小于下边界时,查找失败
|
||
$i = floor(($l + $u) / 2); // 计算近似中间记录
|
||
fseek($this->fp, $this->firstip + $i * 7);
|
||
$beginip = strrev(fread($this->fp, 4)); // 获取中间记录的开始IP地址
|
||
// strrev函数在这里的作用是将little-endian的压缩IP地址转化为big-endian的格式
|
||
// 以便用于比较,后面相同。
|
||
if ($ip < $beginip) { // 用户的IP小于中间记录的开始IP地址时
|
||
$u = $i - 1; // 将搜索的上边界修改为中间记录减一
|
||
}
|
||
else {
|
||
fseek($this->fp, $this->getlong3());
|
||
$endip = strrev(fread($this->fp, 4)); // 获取中间记录的结束IP地址
|
||
if ($ip > $endip) { // 用户的IP大于中间记录的结束IP地址时
|
||
$l = $i + 1; // 将搜索的下边界修改为中间记录加一
|
||
}
|
||
else { // 用户的IP在中间记录的IP范围内时
|
||
$findip = $this->firstip + $i * 7;
|
||
break; // 则表示找到结果,退出循环
|
||
}
|
||
}
|
||
}
|
||
|
||
//获取查找到的IP地理位置信息
|
||
fseek($this->fp, $findip);
|
||
$location['beginip'] = long2ip($this->getlong()); // 用户IP所在范围的开始地址
|
||
$offset = $this->getlong3();
|
||
fseek($this->fp, $offset);
|
||
$location['endip'] = long2ip($this->getlong()); // 用户IP所在范围的结束地址
|
||
$byte = fread($this->fp, 1); // 标志字节
|
||
switch (ord($byte)) {
|
||
case 1: // 标志字节为1,表示国家和区域信息都被同时重定向
|
||
$countryOffset = $this->getlong3(); // 重定向地址
|
||
fseek($this->fp, $countryOffset);
|
||
$byte = fread($this->fp, 1); // 标志字节
|
||
switch (ord($byte)) {
|
||
case 2: // 标志字节为2,表示国家信息又被重定向
|
||
fseek($this->fp, $this->getlong3());
|
||
$location['country'] = $this->getstring();
|
||
fseek($this->fp, $countryOffset + 4);
|
||
$location['area'] = $this->getarea();
|
||
break;
|
||
default: // 否则,表示国家信息没有被重定向
|
||
$location['country'] = $this->getstring($byte);
|
||
$location['area'] = $this->getarea();
|
||
break;
|
||
}
|
||
break;
|
||
case 2: // 标志字节为2,表示国家信息被重定向
|
||
fseek($this->fp, $this->getlong3());
|
||
$location['country'] = $this->getstring();
|
||
fseek($this->fp, $offset + 8);
|
||
$location['area'] = $this->getarea();
|
||
break;
|
||
default: // 否则,表示国家信息没有被重定向
|
||
$location['country'] = $this->getstring($byte);
|
||
$location['area'] = $this->getarea();
|
||
break;
|
||
}
|
||
if (trim($location['country']) == 'CZ88.NET') { // CZ88.NET表示没有有效信息
|
||
$location['country'] = '未知';
|
||
}
|
||
if (trim($location['area']) == 'CZ88.NET') {
|
||
$location['area'] = '';
|
||
}
|
||
return $location;
|
||
}
|
||
|
||
/**
|
||
* 析构函数,用于在页面执行结束后自动关闭打开的文件。
|
||
*
|
||
*/
|
||
public function __destruct() {
|
||
if ($this->fp) {
|
||
fclose($this->fp);
|
||
}
|
||
$this->fp = 0;
|
||
}
|
||
|
||
} |