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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\Api; |
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use Base32\Base32; |
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use Otp\Otp; |
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use SURFnet\VPN\Common\Config; |
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use SURFnet\VPN\Common\Http\ApiErrorResponse; |
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use SURFnet\VPN\Common\Http\ApiResponse; |
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use SURFnet\VPN\Common\Http\AuthUtils; |
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use SURFnet\VPN\Common\Http\InputValidation; |
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use SURFnet\VPN\Common\Http\Request; |
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use SURFnet\VPN\Common\Http\Service; |
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use SURFnet\VPN\Common\Http\ServiceModuleInterface; |
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use SURFnet\VPN\Common\ProfileConfig; |
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use SURFnet\VPN\Server\Storage; |
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class ConnectionsModule implements ServiceModuleInterface |
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{ |
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/** @var \SURFnet\VPN\Common\Config */ |
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private $config; |
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/** @var \SURFnet\VPN\Server\Storage */ |
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private $storage; |
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/** @var array */ |
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private $groupProviders; |
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public function __construct(Config $config, Storage $storage, array $groupProviders) |
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{ |
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$this->config = $config; |
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$this->storage = $storage; |
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$this->groupProviders = $groupProviders; |
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} |
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public function init(Service $service) |
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{ |
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$service->post( |
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'/connect', |
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function (Request $request, array $hookData) { |
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AuthUtils::requireUser($hookData, ['vpn-server-node']); |
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return $this->connect($request); |
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} |
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); |
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$service->post( |
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'/disconnect', |
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function (Request $request, array $hookData) { |
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AuthUtils::requireUser($hookData, ['vpn-server-node']); |
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return $this->disconnect($request); |
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} |
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); |
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$service->post( |
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'/verify_otp', |
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function (Request $request, array $hookData) { |
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AuthUtils::requireUser($hookData, ['vpn-server-node']); |
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return $this->verifyOtp($request); |
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} |
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); |
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} |
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public function connect(Request $request) |
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{ |
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$profileId = InputValidation::profileId($request->getPostParameter('profile_id')); |
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$commonName = InputValidation::commonName($request->getPostParameter('common_name')); |
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$ip4 = InputValidation::ip4($request->getPostParameter('ip4')); |
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$ip6 = InputValidation::ip6($request->getPostParameter('ip6')); |
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$connectedAt = InputValidation::connectedAt($request->getPostParameter('connected_at')); |
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if (true !== $response = $this->verifyConnection($profileId, $commonName)) { |
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return $response; |
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} |
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if (false == $this->storage->clientConnect($profileId, $commonName, $ip4, $ip6, $connectedAt)) { |
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return new ApiErrorResponse('connect', 'unable to write connect event to log'); |
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} |
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return new ApiResponse('connect'); |
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} |
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private function verifyConnection($profileId, $commonName) |
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{ |
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// verify status of certificate/user |
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if (false === $result = $this->storage->getUserCertificateInfo($commonName)) { |
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return new ApiErrorResponse('connect', 'user or certificate does not exist'); |
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} |
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if ($result['user_is_disabled']) { |
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return new ApiErrorResponse('connect', 'user is disabled'); |
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} |
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if ($result['certificate_is_disabled']) { |
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return new ApiErrorResponse('connect', 'certificate is disabled'); |
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} |
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return $this->verifyAcl($profileId, $result['user_id']); |
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} |
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private function verifyAcl($profileId, $externalUserId) |
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{ |
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// verify ACL |
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$profileConfig = new ProfileConfig($this->config->v('vpnProfiles', $profileId)); |
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if ($profileConfig->v('enableAcl')) { |
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// ACL enabled |
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$userGroups = []; |
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foreach ($this->groupProviders as $groupProvider) { |
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$userGroups = array_merge($userGroups, $groupProvider->getGroups($externalUserId)); |
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} |
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if (false === self::isMember($userGroups, $profileConfig->v('aclGroupList'))) { |
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return new ApiErrorResponse('connect', 'user not in ACL'); |
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} |
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} |
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return true; |
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} |
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private static function isMember(array $memberOf, array $aclGroupList) |
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{ |
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// one of the groups must be listed in the profile ACL list |
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foreach ($memberOf as $memberGroup) { |
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if (in_array($memberGroup['id'], $aclGroupList)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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public function disconnect(Request $request) |
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{ |
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$profileId = InputValidation::profileId($request->getPostParameter('profile_id')); |
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$commonName = InputValidation::commonName($request->getPostParameter('common_name')); |
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$ip4 = InputValidation::ip4($request->getPostParameter('ip4')); |
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$ip6 = InputValidation::ip6($request->getPostParameter('ip6')); |
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$connectedAt = InputValidation::connectedAt($request->getPostParameter('connected_at')); |
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$disconnectedAt = InputValidation::disconnectedAt($request->getPostParameter('disconnected_at')); |
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$bytesTransferred = InputValidation::bytesTransferred($request->getPostParameter('bytes_transferred')); |
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if (false === $this->storage->clientDisconnect($profileId, $commonName, $ip4, $ip6, $connectedAt, $disconnectedAt, $bytesTransferred)) { |
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return new ApiErrorResponse('disconnect', 'unable to write disconnect event to log'); |
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} |
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return new ApiResponse('disconnect'); |
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} |
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public function verifyOtp(Request $request) |
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{ |
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$commonName = InputValidation::commonName($request->getPostParameter('common_name')); |
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// we do not need 'otp_type', as only 'totp' is supported at the moment |
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InputValidation::otpType($request->getPostParameter('otp_type')); |
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$totpKey = InputValidation::totpKey($request->getPostParameter('totp_key')); |
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$certInfo = $this->storage->getUserCertificateInfo($commonName); |
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$userId = $certInfo['user_id']; |
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if (!$this->storage->hasTotpSecret($userId)) { |
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return new ApiErrorResponse('verify_otp', 'user has no OTP secret'); |
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} |
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$totpSecret = $this->storage->getTotpSecret($userId); |
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$otp = new Otp(); |
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if (!$otp->checkTotp(Base32::decode($totpSecret), $totpKey)) { |
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return new ApiErrorResponse('verify_otp', 'invalid OTP key'); |
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} |
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View Code Duplication |
if (false === $this->storage->recordTotpKey($userId, $totpKey, time())) { |
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return new ApiErrorResponse('verify_otp', 'OTP key replay'); |
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} |
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return new ApiResponse('verify_otp'); |
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} |
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} |
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eduVPN /
vpn-server-api
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