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<?php |
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/** |
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* Copyright (C) 2016 SURFnet. |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Affero General Public License as |
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* published by the Free Software Foundation, either version 3 of the |
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* License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Affero General Public License for more details. |
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* |
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* You should have received a copy of the GNU Affero General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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namespace SURFnet\VPN\Server\OpenVpn; |
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use Psr\Log\LoggerInterface; |
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use SURFnet\VPN\Server\OpenVpn\Exception\ManagementSocketException; |
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use SURFnet\VPN\Common\Config; |
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use SURFnet\VPN\Server\PoolConfig; |
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/** |
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* Manage all OpenVPN processes controlled by this service. |
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*/ |
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class ServerManager |
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{ |
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/** @var \SURFnet\VPN\Common\Config */ |
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private $config; |
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/** @var ManagementSocketInterface */ |
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private $managementSocket; |
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/** @var \Psr\Log\LoggerInterface */ |
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private $logger; |
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public function __construct(Config $config, ManagementSocketInterface $managementSocket, LoggerInterface $logger) |
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{ |
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$this->config = $config; |
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$this->managementSocket = $managementSocket; |
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$this->logger = $logger; |
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} |
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/** |
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* Get the connection information about connected clients. |
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*/ |
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public function connections() |
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{ |
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$clientConnections = []; |
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// loop over all pools |
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foreach (array_keys($this->config->v('vpnPools')) as $poolId) { |
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$poolConfig = new PoolConfig($this->config->v('vpnPools', $poolId)); |
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$managementIp = $this->getManagementIp($poolConfig); |
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$poolConnections = []; |
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// loop over all processes |
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for ($i = 0; $i < $poolConfig->v('processCount'); ++$i) { |
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// add all connections from this instance to poolConnections |
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try { |
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// open the socket connection |
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$this->managementSocket->open( |
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sprintf( |
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'tcp://%s:%d', |
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$managementIp, |
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11940 + $i |
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) |
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); |
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$poolConnections = array_merge( |
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$poolConnections, |
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StatusParser::parse($this->managementSocket->command('status 2')) |
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); |
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// close the socket connection |
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$this->managementSocket->close(); |
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} catch (ManagementSocketException $e) { |
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// we log the error, but continue with the next instance |
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$this->logger->error( |
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sprintf( |
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'error with socket "%s:%s", message: "%s"', |
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$managementIp, |
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11940 + $i, |
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$e->getMessage() |
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) |
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); |
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} |
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} |
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// we add the poolConnections to the clientConnections array |
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$clientConnections[] = ['id' => $poolId, 'connections' => $poolConnections]; |
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} |
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return $clientConnections; |
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} |
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/** |
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* Disconnect all clients with this CN from all pools and instances |
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* managed by this service. |
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* |
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* @param string $commonName the CN to kill |
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*/ |
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public function kill($commonName) |
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{ |
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$clientsKilled = 0; |
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// loop over all pools |
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foreach (array_keys($this->config->v('vpnPools')) as $poolId) { |
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$poolConfig = new PoolConfig($this->config->v('vpnPools', $poolId)); |
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$managementIp = $this->getManagementIp($poolConfig); |
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// loop over all processes |
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for ($i = 0; $i < $poolConfig->v('processCount'); ++$i) { |
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// add all kills from this instance to poolKills |
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try { |
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// open the socket connection |
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$this->managementSocket->open( |
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sprintf( |
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'tcp://%s:%d', |
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$managementIp, |
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11940 + $i |
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) |
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); |
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$response = $this->managementSocket->command(sprintf('kill %s', $commonName)); |
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if (0 === mb_strpos($response[0], 'SUCCESS: ')) { |
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++$clientsKilled; |
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} |
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// close the socket connection |
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$this->managementSocket->close(); |
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} catch (ManagementSocketException $e) { |
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// we log the error, but continue with the next instance |
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$this->logger->error( |
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sprintf( |
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'error with socket "%s:%s", message: "%s"', |
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$managementIp, |
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11940 + $i, |
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$e->getMessage() |
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) |
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); |
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} |
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} |
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} |
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return 0 !== $clientsKilled; |
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} |
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private function getManagementIp(PoolConfig $poolConfig) |
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{ |
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if ($poolConfig->e('managementIp')) { |
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return $poolConfig->v('managementIp'); |
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} |
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return sprintf('127.42.%d.%d', 100 + $this->config->v('instanceNumber'), 100 + $poolConfig->v('poolNumber')); |
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} |
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} |
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eduVPN /
vpn-server-api
