90 lines
2.4 KiB
PHP
90 lines
2.4 KiB
PHP
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<?php
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/**
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* 实现网络唤醒功能
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*/
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class WOL
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{
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private $hostname; // 唤醒设备的url地址
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private $mac; // 唤醒设备的mac地址
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private $port; // 唤醒设备的端口
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private $ip; // 唤醒设备的ip地址(不是必须的,程序会自动根据$hostname来获取对应的ip)
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private $msg = array(
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0 => "目标机器已经是开机状态的.",
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1 => "socket_create 方法执行失败",
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2 => "socket_set_option 方法执行失败",
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3 => "magic packet 发送成功!",
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4 => "magic packet 发送成功!"
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);
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function __construct($hostname,$mac,$port,$ip = false)
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{
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$this->hostname = $hostname;
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$this->mac = $mac;
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$this->port = $port;
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if (!$ip)
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{
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$this->ip = $this->get_ip_from_hostname();
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}
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}
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public function wake_on_wan()
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{
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if ($this->is_awake())
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{
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return $this->msg[0]; // 如果设备已经是唤醒的就不做其它操作了
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}
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else
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{
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$addr_byte = explode(':', $this->mac);
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$hw_addr = '';
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for ($a=0; $a<6; $a++) $hw_addr .= chr(hexdec($addr_byte[$a]));
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$msg = chr(255).chr(255).chr(255).chr(255).chr(255).chr(255);
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for ($a=1; $a<=16; $a++) $msg .= $hw_addr;
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// 通过 UDP 发送数据包
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$s = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
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if ($s == false)
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{
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return $this->msg[1]; // socket_create 执行失败
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}
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$set_opt = @socket_set_option($s, 1, 6, TRUE);
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if ($set_opt < 0)
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{
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return $this->msg[2]; // socket_set_option 执行失败
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}
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$sendto = @socket_sendto($s, $msg, strlen($msg), 0, $this->ip, $this->port);
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if ($sendto)
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{
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socket_close($s);
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return $this->msg[3]; // magic packet 发送成功!
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}
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return $this->msg[4]; // magic packet 发送失败!
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}
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}
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private function is_awake()
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{
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$awake = @fsockopen($this->ip, 80, $errno, $errstr, 2);
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if ($awake)
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{
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fclose($awake);
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}
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return $awake;
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}
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private function get_ip_from_hostname()
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{
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return gethostbyname($this->hostname);
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}
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}
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?>
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