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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; |
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use fkooman\Json\Json; |
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use RuntimeException; |
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/** |
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* Manage static configuration for configurations. |
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* Features: |
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* - disable a configuration based on CN |
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* - set static IPv4/IPv6 address for a CN. |
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*/ |
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class StaticConfig |
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{ |
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/** @var string */ |
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private $staticConfigDir; |
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public function __construct($staticConfigDir) |
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{ |
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$this->staticConfigDir = $staticConfigDir; |
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} |
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private function parseConfig($commonName) |
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{ |
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$commonNamePath = sprintf('%s/%s', $this->staticConfigDir, $commonName); |
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// XXX do something if file does not exist |
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try { |
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return Json::decodeFile($commonNamePath); |
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} catch (RuntimeException $e) { |
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return []; |
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} |
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} |
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View Code Duplication |
public function disableCommonName($commonName) |
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{ |
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Utils::validateCommonName($commonName); |
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$clientConfig = $this->parseConfig($commonName); |
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if (array_key_exists('disable', $clientConfig) && $clientConfig['disable']) { |
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// already disabled |
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return false; |
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} |
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$clientConfig['disable'] = true; |
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$this->writeFile($commonName, $clientConfig); |
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return true; |
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} |
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View Code Duplication |
public function enableCommonName($commonName) |
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{ |
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Utils::validateCommonName($commonName); |
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$clientConfig = $this->parseConfig($commonName); |
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if (array_key_exists('disable', $clientConfig) && $clientConfig['disable']) { |
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// it is disabled, enable it |
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$clientConfig['disable'] = false; |
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$this->writeFile($commonName, $clientConfig); |
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return true; |
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} |
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// it is not disabled |
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return false; |
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} |
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public function isDisabled($commonName) |
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{ |
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Utils::validateCommonName($commonName); |
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$clientConfig = $this->parseConfig($commonName); |
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return array_key_exists('disable', $clientConfig) && $clientConfig['disable']; |
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} |
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View Code Duplication |
public function getDisabledCommonNames($userId = null) |
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{ |
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if (!is_null($userId)) { |
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Utils::validateUserId($userId); |
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} |
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$disabledCommonNames = array(); |
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$pathFilter = sprintf('%s/*', $this->staticConfigDir); |
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if (!is_null($userId)) { |
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$pathFilter = sprintf('%s/%s_*', $this->staticConfigDir, $userId); |
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} |
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foreach (glob($pathFilter) as $commonNamePath) { |
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$commonName = basename($commonNamePath); |
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if ($this->isDisabled($commonName)) { |
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$disabledCommonNames[] = $commonName; |
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} |
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} |
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return $disabledCommonNames; |
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} |
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View Code Duplication |
public function getAllStaticAddresses($userId = null) |
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{ |
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if (!is_null($userId)) { |
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Utils::validateUserId($userId); |
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} |
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$staticAddresses = array(); |
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$pathFilter = sprintf('%s/*', $this->staticConfigDir); |
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if (!is_null($userId)) { |
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$pathFilter = sprintf('%s/%s_*', $this->staticConfigDir, $userId); |
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} |
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foreach (glob($pathFilter) as $commonNamePath) { |
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$commonName = basename($commonNamePath); |
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$staticAddresses[$commonName] = $this->getStaticAddresses($commonName); |
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} |
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return $staticAddresses; |
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} |
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public function getStaticAddresses($commonName) |
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{ |
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Utils::validateCommonName($commonName); |
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$clientConfig = $this->parseConfig($commonName); |
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$v4 = null; |
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if (array_key_exists('v4', $clientConfig)) { |
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$v4 = $clientConfig['v4']; |
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} |
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$v6 = null; |
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if (array_key_exists('v6', $clientConfig)) { |
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$v6 = $clientConfig['v6']; |
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} |
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return array( |
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'v4' => $v4, |
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'v6' => $v6, |
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); |
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} |
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public function setStaticAddresses($commonName, $v4, $v6) |
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{ |
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Utils::validateCommonName($commonName); |
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$clientConfig = $this->parseConfig($commonName); |
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$clientConfig['v4'] = $v4; |
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$clientConfig['v6'] = $v6; |
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$this->writeFile($commonName, $clientConfig); |
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return true; |
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} |
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private function writeFile($commonName, array $clientConfig) |
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{ |
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$commonNamePath = sprintf('%s/%s', $this->staticConfigDir, $commonName); |
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if (false === @file_put_contents($commonNamePath, Json::encode($clientConfig))) { |
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throw new RuntimeException('unable to write to static configuration file'); |
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} |
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} |
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} |
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eduVPN /
vpn-server-api
Loading history...
$commonNamePathcan contain request data and is used in file inclusion context(s) leading to a potential security vulnerability.General Strategies to prevent injection
In general, it is advisable to prevent any user-data to reach this point. This can be done by white-listing certain values:
if ( ! in_array($value, array('this-is-allowed', 'and-this-too'), true)) { throw new \InvalidArgumentException('This input is not allowed.'); }For numeric data, we recommend to explicitly cast the data: