Re: Has anyone tried to make telnet client with php?
| From: | Thies C. Arntzen | Date: | Fri, 11 May 2001 08:39:36 +0000 |
| Subject: | Re: Has anyone tried to make telnet client with php? | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-52429@lists.php.net to get a copy of this message | ||
On Thu, May 10, 2001 at 08:28:59PM -0700, Grishick wrote:
> Has anyone ever tried to make a telnet client with PHP? Any ideas how to
> make it?
> Tried to make it with socket, fsockopen, fputs, freads - does not work for
> telnet.
> Probably cURL will help?
> Deadly need an advice.
> Thanks.
> Grishick.
> grisha@kasenna.com
the attached code was written in a hurry and does _no_ error
checking - but it does work (for me).
<?
error_reporting(-1);
class Telnet {
/* (c) thies@thieso.net */
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 == "\021") {
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";
}
}
}
}
$tn = new telnet("192.168.255.100",23);
echo $tn->read_till("ogin: ");
$tn->write("admin\r\n");
echo $tn->read_till("word: ");
$tn->write("thieso\r\n");
echo $tn->read_till(":> ");
$tn->write("ps\r\n");
echo $tn->read_till(":> ");
echo $tn->close();
?>