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php来实现telnet的连接、传递命令、获取返回值等功能!
<?php 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"; } } } } /* $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(); */