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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\Json\Json; |
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class FileConfigStorage implements ConfigStorageInterface |
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{ |
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/** @var string */ |
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private $configDir; |
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public function __construct($configDir) |
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{ |
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$this->configDir = $configDir; |
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} |
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/** |
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* Get configuration specific to a particular user. |
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* |
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* @return UserConfig |
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*/ |
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public function getUserConfig($userId) |
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{ |
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$userData = $this->readFile( |
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sprintf('%s/users/%s', $this->configDir, $userId) |
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); |
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return new UserConfig($userData); |
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} |
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/** |
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* Set the configuration for a particular user. |
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*/ |
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public function setUserConfig($userId, UserConfig $userConfig) |
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{ |
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$this->writeFile( |
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sprintf('%s/users/%s', $this->configDir, $userId), |
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$userConfig->toArray() |
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); |
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} |
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/** |
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* Get the configuration for a particular common name. |
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* |
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* @return CommonNameConfig |
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*/ |
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public function getCommonNameConfig($commonName) |
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{ |
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$commonNameData = $this->readFile( |
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sprintf('%s/common_names/%s', $this->configDir, $commonName) |
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); |
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return new CommonNameConfig($commonNameData); |
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} |
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public function getAllCommonNameConfig($userId) |
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{ |
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$configArray = []; |
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$pathFilter = sprintf('%s/common_names/*', $this->configDir); |
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if (!is_null($userId)) { |
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$pathFilter = sprintf('%s/common_names/%s_*', $this->configDir, $userId); |
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} |
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foreach (glob($pathFilter) as $commonNamePath) { |
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$commonName = basename($commonNamePath); |
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$configArray[$commonName] = $this->getCommonNameConfig($commonName)->toArray(); |
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} |
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return $configArray; |
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} |
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/** |
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* Set the configuration for a particular common name. |
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*/ |
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public function setCommonNameConfig($commonName, CommonNameConfig $commonNameConfig) |
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{ |
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$this->writeFile( |
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sprintf('%s/common_names/%s', $this->configDir, $commonName), |
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$commonNameConfig->toArray() |
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); |
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} |
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private function readFile($fileName) |
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{ |
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if (false === $fileContent = @file_get_contents($fileName)) { |
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return []; |
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} |
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return Json::decode($fileContent); |
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} |
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private function writeFile($fileName, array $fileContent) |
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{ |
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if (false === @file_put_contents($fileName, Json::encode($fileContent))) { |
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throw new RuntimeException(sprintf('unable to write file "%s"', $fileName)); |
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} |
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} |
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} |
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eduVPN /
vpn-server-api
$pathFiltercan contain request data and is used in file inclusion context(s) leading to a potential security vulnerability.General Strategies to prevent injection
In general, it is advisable to prevent any user-data to reach this point. This can be done by white-listing certain values:
if ( ! in_array($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: