php来实现telnet的的连接、、、传递命令、返回值等等功能
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- <?php
- error_reporting(-1);
- classtelnet {
-
- bar $ sock = null; $host,$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($this->sock);
- }
-
- 関数 read_till($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 = $this->getc();
- // echo "".ord($opt)."n";
- fwrite($this->gt; sock,$IAC.$WONT.$opt);
- }
- elseif (($c == $WILL) || ($c == $WONT)) {
- $opt = $this->getc();
- // echo "我々は ".ord($opt)."n";
- fwrite($this->sock,$IAC.$DONT.$opt);
- }
- else {
- // echo "where c=".ord($c)."n";
- }
- }
- }
- }
-
- /*
- $telnet = new telnet("192.168.0.1",23);
- echo $telnet- >read_till("ログイン: ");
- $telnet->write("kongxxrn");
- echo $telnet->read_till("パスワード: ");
- $telnet->write("KONGXXrn") ;
- echo $telnet->read_till(":> ");
- $telnet->write("lsrn");
- echo $telnet->read_till(":> ");
- echo $telnet ->close();
-
*/
复制代
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