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NARKOZNARKOZ
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Merge pull request NARKOZ#44 from dialtoneuk/master
Ported fucking_coffee to PHP. I'm not porting anymore.
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‎php/Lib/Telnet.php

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<?php
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namespace HackerScripts\Lib;
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/**
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* Telnet class
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*
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* Used to execute remote commands via telnet connection
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* Usess sockets functions and fgetc() to process result
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*
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* All methods throw Exceptions on error
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*
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* Written by Dalibor Andzakovic <[email protected]>
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* Based on the code originally written by Marc Ennaji and extended by
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* Matthias Blaser <[email protected]>
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*
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* Extended by Christian Hammers <[email protected]>
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* Modified by Frederik Sauer <[email protected]>
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*
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*/
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class Telnet {
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private $host;
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private $port;
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private $timeout;
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private $stream_timeout_sec;
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private $stream_timeout_usec;
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private $socket = NULL;
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private $buffer = NULL;
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private $prompt;
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private $errno;
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private $errstr;
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private $strip_prompt = TRUE;
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private $NULL;
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private $DC1;
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private $WILL;
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private $WONT;
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private $DO;
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private $DONT;
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private $IAC;
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private $global_buffer = '';
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const TELNET_ERROR = FALSE;
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const TELNET_OK = TRUE;
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public function __construct($host = '127.0.0.1', $port = '23', $timeout = 10, $prompt = '$', $stream_timeout = 1) {
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$this->host = $host;
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$this->port = $port;
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$this->timeout = $timeout;
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$this->setPrompt($prompt);
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$this->setStreamTimeout($stream_timeout);
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// set some telnet special characters
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$this->NULL = chr(0);
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$this->DC1 = chr(17);
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$this->WILL = chr(251);
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$this->WONT = chr(252);
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$this->DO = chr(253);
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$this->DONT = chr(254);
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$this->IAC = chr(255);
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$this->connect();
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}
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public function __destruct() {
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// clean up resources
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$this->disconnect();
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$this->buffer = NULL;
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$this->global_buffer = NULL;
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}
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public function connect() {
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// check if we need to convert host to IP
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if (!preg_match('/([0-9]{1,3}\\.){3,3}[0-9]{1,3}/', $this->host)) {
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$ip = gethostbyname($this->host);
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if ($this->host == $ip) {
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throw new Exception("Cannot resolve $this->host");
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} else {
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$this->host = $ip;
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}
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}
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// attempt connection - suppress warnings
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$this->socket = @fsockopen($this->host, $this->port, $this->errno, $this->errstr, $this->timeout);
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if (!$this->socket) {
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throw new Exception("Cannot connect to $this->host on port $this->port");
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}
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if (!empty($this->prompt)) {
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$this->waitPrompt();
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}
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return self::TELNET_OK;
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}
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public function disconnect() {
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if ($this->socket) {
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if (! fclose($this->socket)) {
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throw new Exception("Error while closing telnet socket");
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}
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$this->socket = NULL;
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}
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return self::TELNET_OK;
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}
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public function exec($command, $add_newline = TRUE) {
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$this->write($command, $add_newline);
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$this->waitPrompt();
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return $this->getBuffer();
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}
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public function login($username, $password) {
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try {
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$this->setPrompt('login:');
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$this->waitPrompt();
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$this->write($username);
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$this->setPrompt('Password:');
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$this->waitPrompt();
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$this->write($password);
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$this->setPrompt();
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$this->waitPrompt();
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} catch (Exception $e) {
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throw new Exception("Login failed.");
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}
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return self::TELNET_OK;
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}
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public function setPrompt($str = '$') {
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return $this->setRegexPrompt(preg_quote($str, '/'));
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}
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public function setRegexPrompt($str = '\$') {
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$this->prompt = $str;
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return self::TELNET_OK;
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}
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public function setStreamTimeout($timeout) {
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$this->stream_timeout_usec = (int)(fmod($timeout, 1) * 1000000);
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$this->stream_timeout_sec = (int)$timeout;
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}
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public function stripPromptFromBuffer($strip) {
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$this->strip_prompt = $strip;
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} // function stripPromptFromBuffer
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protected function getc() {
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stream_set_timeout($this->socket, $this->stream_timeout_sec, $this->stream_timeout_usec);
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$c = fgetc($this->socket);
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$this->global_buffer .= $c;
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return $c;
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}
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public function clearBuffer() {
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$this->buffer = '';
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}
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public function readTo($prompt) {
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if (!$this->socket) {
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throw new Exception("Telnet connection closed");
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}
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// clear the buffer
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$this->clearBuffer();
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$until_t = time() + $this->timeout;
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do {
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// time's up (loop can be exited at end or through continue!)
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if (time() > $until_t) {
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throw new Exception("Couldn't find the requested : '$prompt' within {$this->timeout} seconds");
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}
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$c = $this->getc();
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if ($c === FALSE) {
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if (empty($prompt)) {
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return self::TELNET_OK;
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}
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throw new Exception("Couldn't find the requested : '" . $prompt . "', it was not in the data returned from server: " . $this->buffer);
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}
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// Interpreted As Command
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if ($c == $this->IAC) {
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if ($this->negotiateTelnetOptions()) {
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continue;
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}
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}
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// append current char to global buffer
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$this->buffer .= $c;
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// we've encountered the prompt. Break out of the loop
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if (!empty($prompt) && preg_match("/{$prompt}$/", $this->buffer)) {
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return self::TELNET_OK;
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}
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} while ($c != $this->NULL || $c != $this->DC1);
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}
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public function write($buffer, $add_newline = TRUE) {
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if (!$this->socket) {
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throw new Exception("Telnet connection closed");
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}
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// clear buffer from last command
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$this->clearBuffer();
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if ($add_newline == TRUE) {
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$buffer .= "\n";
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}
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$this->global_buffer .= $buffer;
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if (!fwrite($this->socket, $buffer) < 0) {
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throw new Exception("Error writing to socket");
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}
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return self::TELNET_OK;
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}
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protected function getBuffer() {
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// Remove all carriage returns from line breaks
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$buf = preg_replace('/\r\n|\r/', "\n", $this->buffer);
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// Cut last line from buffer (almost always prompt)
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if ($this->strip_prompt) {
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$buf = explode("\n", $buf);
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unset($buf[count($buf) - 1]);
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$buf = implode("\n", $buf);
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}
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return trim($buf);
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}
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public function getGlobalBuffer() {
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return $this->global_buffer;
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}
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protected function negotiateTelnetOptions() {
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$c = $this->getc();
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if ($c != $this->IAC) {
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if (($c == $this->DO) || ($c == $this->DONT)) {
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$opt = $this->getc();
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fwrite($this->socket, $this->IAC . $this->WONT . $opt);
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} else if (($c == $this->WILL) || ($c == $this->WONT)) {
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$opt = $this->getc();
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fwrite($this->socket, $this->IAC . $this->DONT . $opt);
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} else {
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throw new Exception('Error: unknown control character ' . ord($c));
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}
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} else {
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throw new Exception('Error: Something Wicked Happened');
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}
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return self::TELNET_OK;
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}
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protected function waitPrompt() {
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return $this->readTo($this->prompt);
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}
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}

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