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<?php
/*
* Looking Glass - An easy to deploy Looking Glass
* Copyright (C) 2014 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 'config.php';
require_once 'utils.php';
class Router {
private $id;
private $host;
private $type;
private $auth;
private $connection;
private $requester;
public function __construct($id, $requester) {
global $config;
$this->id = $id;
$this->host = $config['routers'][$id]['host'];
$this->type = $config['routers'][$id]['type'];
$this->auth = $config['routers'][$id]['auth'];
$this->requester = $requester;
}
private function log_command($command) {
global $config;
file_put_contents($config['misc']['logs'], $command,
FILE_APPEND | LOCK_EX);
}
public function connect() {
global $config;
switch ($this->auth) {
case 'ssh-password':
$this->connection = ssh2_connect($this->host, 22);
if (!$this->connection) {
throw new Exception('Cannot connect to router');
}
$user = $config['routers'][$this->id]['user'];
$pass = $config['routers'][$this->id]['pass'];
if (!ssh2_auth_password($this->connection, $user, $pass)) {
throw new Exception('Bad login/password.');
}
break;
default:
echo 'Unknown protocol for connection.';
}
}
public function execute_command($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 $data;
}
public function send_command($command, $parameters) {
switch ($command) {
case 'bgp':
if (($parameters != null) && (strlen($parameters) > 0)) {
$complete_command = 'show route '.$parameters.' | no-more';
} else {
return 'An IP address (and only one) is required as destination.';
}
break;
case 'as-path-regex':
if (($parameters != null) && (strlen($parameters) > 0)) {
$complete_command = 'show route aspath-regex '.$parameters.' | no-more';
} else {
return 'An AS-Path regex is required like ".*XXXX YYYY.*".';
}
break;
case 'as':
if (($parameters != null) && (strlen($parameters) > 0)) {
$complete_command = 'show route aspath-regex .*'.$parameters.'.* | no-more';
} else {
return 'An AS number is required like XXXX.';
}
break;
case 'ping':
if (($parameters != null) && (strlen($parameters) > 0)) {
$complete_command = 'ping count 10 '.$parameters.' rapid';
} else {
return 'An IP address (and only one) is required to ping a host.';
}
break;
case 'traceroute':
if (($parameters != null) && (strlen($parameters) > 0)) {
if (match_ipv4($parameters)) {
$complete_command = 'traceroute '.$parameters.' as-number-lookup';
} else {
$complete_command = 'traceroute '.$parameters;
}
} else {
return 'An IP address is required to traceroute a host.';
}
break;
default:
return 'Command not supported.';
}
$this->log_command('['.date("Y-m-d H:i:s").'] [client: '.
$this->requester.'] '.$this->host.'> '.$complete_command."\n");
return $this->execute_command($complete_command);
}
public function disconnect() {
$this->execute_command('exit');
$this->connection = null;
}
public function __destruct() {
$this->disconnect();
}
}
// End of router.php
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