* * 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 'authentication.php'; class SSH extends Authentication { private $port; public function __construct($config) { parent::__construct($config); $this->port = isset($this->config['port']) ? $this->config['port'] : 22; } protected function check_config() { if ($this->config['auth'] == 'ssh-password') { if (!isset($this->config['user']) || !isset($this->config['pass'])) { throw new Exception('User and password required for ssh-password.'); } } if ($this->config['auth'] == 'ssh-key') { if (!isset($this->config['user']) || !isset($this->config['public_key']) || !isset($this->config['private_key'])) { throw new Exception('User and key pair required for ssh-key.'); } } } public function connect() { $this->connection = ssh2_connect($this->config['host'], $this->port); if (!$this->connection) { throw new Exception('Cannot connect to router.'); } $success = false; if ($this->config['auth'] == 'ssh-password') { $success = ssh2_auth_password($this->connection, $this->config['user'], $this->config['pass']); } else if ($this->config['auth'] == 'ssh-key') { if (isset($this->config['pass'])) { $success = ssh2_auth_pubkey_file($this->connection, $this->config['user'], $this->config['public_key'], $this->config['private_key'], $this->config['pass']); } else { $success = ssh2_auth_pubkey_file($this->connection, $this->config['user'], $this->config['public_key'], $this->config['private_key']); } } else { throw new Exception('Unknown type of connection for SSH.'); } if (!success) { throw new Exception('SSH authentication failed.'); } } public function send_command($command) { if ($this->connection == null) { $this->connect(); } if (!($stream = ssh2_exec($this->connection, $command))) { throw new Exception('SSH command failed'); } stream_set_blocking($stream, true); $data = ''; while ($buf = fread($stream, 4096)) { $data .= $buf; } fclose($stream); return $data; } public function disconnect() { $this->send_command('exit'); $this->connection = null; } public function __destruct() { parent::__destruct(); } } // End of ssh.php