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<?php
/*
* Looking Glass - An easy to deploy Looking Glass
* Copyright (C) 2014-2017 Guillaume Mazoyer <gmazoyer@gravitons.in>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
require_once('Crypt/RSA.php');
require_once('Net/SSH2.php');
require_once('authentication.php');
final class SSH extends Authentication {
private $port;
public function __construct($config) {
parent::__construct($config);
$this->port = isset($this->config['port']) ? (int) $this->config['port'] : 22;
}
protected function check_config() {
if ($this->config['auth'] == 'ssh-password') {
if (!isset($this->config['user']) || !isset($this->config['pass'])) {
throw new Exception('Router authentication configuration incomplete.');
}
}
if ($this->config['auth'] == 'ssh-key') {
if (!isset($this->config['user']) || !isset($this->config['private_key'])) {
throw new Exception('Router authentication configuration incomplete.');
}
}
}
public function connect() {
$this->connection = new Net_SSH2($this->config['host'], $this->port);
$this->connection->setTimeout($this->config['timeout']);
$success = false;
if ($this->config['auth'] == 'ssh-password') {
$success = $this->connection->login($this->config['user'], $this->config['pass']);
} else if ($this->config['auth'] == 'ssh-key') {
$key = new Crypt_RSA();
$key->loadKey(file_get_contents($this->config['private_key']));
if (isset($this->config['pass'])) {
$key->setPassword($this->config['pass']);
}
$success = $this->connection->login($this->config['user'], $key);
} else {
throw new Exception('Unknown type of connection.');
}
if (!$success) {
throw new Exception('Cannot connect to router.');
}
}
public function send_command($command) {
$this->connect();
$data = $this->connection->exec($command);
$this->disconnect();
return $data;
}
public function disconnect() {
if (($this->connection != null) && $this->connection->isConnected()) {
$this->connection->disconnect();
$this->connection = null;
}
}
}
// End of ssh.php
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