使用php來實現telnet的連接、傳遞命令、獲取返回值等功能！

1.[文件] telnet.php?~?2KB???? 下載(196)

error_reporting(-1);

class Telnet {

var $sock = NULL;

function telnet($host,$port) {

$this->sock = fsockopen($host,$port);

socket_set_timeout($this->sock,2,0);

}

function close() {

if ($this->sock) fclose($this->sock);

$this->sock = NULL;

}

function write($buffer) {

$buffer = str_replace(chr(255),chr(255).chr(255),$buffer);

fwrite($this->sock,$buffer);

}

function getc() {

return fgetc($this->sock);

}

function read_till($what) {

$buf = '';

while (1) {

$IAC = chr(255);

$DONT = chr(254);

$DO = chr(253);

$WONT = chr(252);

$WILL = chr(251);

$theNULL = chr(0);

$c = $this->getc();

if ($c === false) return $buf;

if ($c == $theNULL) {

continue;

}

if ($c == "1") {

continue;

}

if ($c != $IAC) {

$buf .= $c;

if ($what == (substr($buf,strlen($buf)-strlen($what)))) {

return $buf;

}

else {

continue;

}

}

$c = $this->getc();

if ($c == $IAC) {

$buf .= $c;

}

else if (($c == $DO) || ($c == $DONT)) {

$opt = $this->getc();

// echo "we wont ".ord($opt)."\n";

fwrite($this->sock,$IAC.$WONT.$opt);

}

elseif (($c == $WILL) || ($c == $WONT)) {

$opt = $this->getc();

// echo "we dont ".ord($opt)."\n";

fwrite($this->sock,$IAC.$DONT.$opt);

}

else {

// echo "where are we? c=".ord($c)."\n";

}

}

}

}

/*

使用方法 示例

$telnet = new telnet("192.168.0.1",23);

echo $telnet->read_till("login: ");

$telnet->write("kongxx\r\n");

echo $telnet->read_till("password: ");

$telnet->write("KONGXX\r\n");

echo $telnet->read_till(":> ");

$telnet->write("ls\r\n");

echo $telnet->read_till(":> ");

echo $telnet->close();

*/

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