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<?php |
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/** |
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* Copyright 2015 François Kooman <[email protected]>. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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namespace fkooman\VPN\Server\Config; |
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use RuntimeException; |
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use fkooman\VPN\Server\Utils; |
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/** |
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* This class generates a configuration file specific for the connecting |
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* client CN. |
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*/ |
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class ClientConfig |
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{ |
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/** @var string */ |
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private $leaseDir; |
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/** @var ConfigStorageInterface */ |
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private $configStorage; |
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/** @var IPv4 */ |
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private $v4; |
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/** @var IPv6 */ |
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private $v6; |
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public function __construct(array $input, ConfigStorageInterface $configStorage) |
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{ |
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$this->parseConfig($input); |
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$this->configStorage = $configStorage; |
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} |
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/** |
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* Generate a configuration file for a CN. |
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* |
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* @param string $commonName the CN |
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* |
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* @return string the config file for the CN |
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*/ |
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public function get($commonName) |
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{ |
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$configData = []; |
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// read the CN configuration |
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$cnConfig = $this->configStorage->getConfig($commonName); |
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// is the CN disabled? |
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if ($cnConfig->getDisable()) { |
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return false; |
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} |
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// get the pool |
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$cnPool = $cnConfig->getPool(); |
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$poolRange = $this->v4->getPool($cnPool)->getRange(); |
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$v4s = $poolRange->getFirstHost(); |
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$v4e = $poolRange->getLastHost(); |
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$v4n = $this->v4->getRange()->getNetmask(); |
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$v6p = $this->v6->getPrefix(); |
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$v6r = AddressPool::getIp6($v6p, $this->v4->getRange()->getFirstHost()); |
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$activeLeases = array_merge( |
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[$this->v4->getRange()->getFirstHost()], // the IP address of the VPN server cannot be used |
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Utils::getActiveLeases($this->leaseDir) |
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); |
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if (false === $v4 = AddressPool::getIp4($v4s, $v4e, $activeLeases)) { |
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throw new RuntimeException(sprintf('"%s" could not connect, ran out of IP space', $envData['common_name'])); |
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} |
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$v6 = AddressPool::getIp6($v6p, $v4); |
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$configData['v4'] = $v4; |
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$configData['v4_netmask'] = $v4n; |
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$configData['v4_gw'] = $this->v4->getRange()->getFirstHost(); |
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$configData['v6'] = $v6; |
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$configData['v6_gw'] = $v6r; |
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$configData['dns'] = array_merge($this->v4->getDns(), $this->v6->getDns()); |
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$configData['default_gw'] = $this->v4->getPool($cnPool)->useDefaultGateway(); |
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$configData['dst_net4'] = $this->v4->getPool($cnPool)->getDstNet4(); |
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// XXX we should not have v6 prefixes in v4 config section |
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$configData['dst_net6'] = $this->v4->getPool($cnPool)->getDstNet6(); |
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return $configData; |
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} |
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/** |
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* Parse and validate the configuration and set default values if they |
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* are missing from the configuration file. |
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*/ |
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private function parseConfig(array $input) |
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{ |
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foreach (['leaseDir', 'v4', 'v6'] as $k) { |
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if (!array_key_exists($k, $input)) { |
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throw new RuntimeException(sprintf('missing key "%s" in configuration', $k)); |
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} |
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} |
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$this->leaseDir = $input['leaseDir']; |
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$this->v4 = new IPv4($input['v4']); |
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$this->v6 = new IPv6($input['v6']); |
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} |
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} |
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eduVPN /
vpn-server-api
