97 lines
4.3 KiB
PHP
97 lines
4.3 KiB
PHP
<?php
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/**
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* @copyright Copyright (C) 2010-2021, the Friendica project
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*
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* @license GNU AGPL version 3 or any later version
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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 <https://www.gnu.org/licenses/>.
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*
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*/
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namespace Friendica\Module\OAuth;
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use Friendica\Core\Logger;
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use Friendica\Core\System;
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use Friendica\Database\DBA;
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use Friendica\DI;
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use Friendica\Module\BaseApi;
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use Friendica\Security\OAuth;
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/**
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* @see https://docs.joinmastodon.org/spec/oauth/
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* @see https://aaronparecki.com/oauth-2-simplified/
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*/
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class Token extends BaseApi
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{
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public static function post(array $parameters = [])
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{
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$request = self::getRequest([
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'client_id' => '', // Client ID, obtained during app registration
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'client_secret' => '', // Client secret, obtained during app registration
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'redirect_uri' => '', // Set a URI to redirect the user to. If this parameter is set to "urn:ietf:wg:oauth:2.0:oob" then the token will be shown instead. Must match one of the redirect URIs declared during app registration.
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'scope' => 'read', // List of requested OAuth scopes, separated by spaces. Must be a subset of scopes declared during app registration. If not provided, defaults to "read".
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'code' => '', // A user authorization code, obtained via /oauth/authorize
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'grant_type' => '', // Set equal to "authorization_code" if code is provided in order to gain user-level access. Otherwise, set equal to "client_credentials" to obtain app-level access only.
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]);
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// AndStatus transmits the client data in the AUTHORIZATION header field, see https://github.com/andstatus/andstatus/issues/530
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$authorization = $_SERVER['HTTP_AUTHORIZATION'] ?? '';
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if (empty($authorization)) {
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// workaround for HTTP-auth in CGI mode
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$authorization = $_SERVER['REDIRECT_REMOTE_USER'] ?? '';
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}
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if (empty($request['client_id']) && !empty($authorization) && (substr($authorization, 0, 6) == 'Basic ')) {
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$datapair = explode(':', base64_decode(trim(substr($authorization, 6))));
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if (count($datapair) == 2) {
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$request['client_id'] = $datapair[0];
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$request['client_secret'] = $datapair[1];
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}
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}
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if (empty($request['client_id']) || empty($request['client_secret'])) {
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Logger::warning('Incomplete request data', ['request' => $_REQUEST]);
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DI::mstdnError()->UnprocessableEntity(DI::l10n()->t('Incomplete request data'));
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}
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$application = OAuth::getApplication($request['client_id'], $request['client_secret'], $request['redirect_uri']);
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if (empty($application)) {
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DI::mstdnError()->UnprocessableEntity();
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}
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if ($request['grant_type'] == 'client_credentials') {
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// the "client_credentials" are used as a token for the application itself.
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// see https://aaronparecki.com/oauth-2-simplified/#client-credentials
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$token = OAuth::createTokenForUser($application, 0, '');
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} elseif ($request['grant_type'] == 'authorization_code') {
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// For security reasons only allow freshly created tokens
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$condition = ["`redirect_uri` = ? AND `id` = ? AND `code` = ? AND `created_at` > UTC_TIMESTAMP() - INTERVAL ? MINUTE",
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$request['redirect_uri'], $application['id'], $request['code'], 5];
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$token = DBA::selectFirst('application-view', ['access_token', 'created_at'], $condition);
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if (!DBA::isResult($token)) {
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Logger::warning('Token not found or outdated', $condition);
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DI::mstdnError()->Unauthorized();
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}
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} else {
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Logger::warning('Unsupported or missing grant type', ['request' => $_REQUEST]);
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DI::mstdnError()->UnprocessableEntity(DI::l10n()->t('Unsupported or missing grant type'));
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}
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$object = new \Friendica\Object\Api\Mastodon\Token($token['access_token'], 'Bearer', $application['scopes'], $token['created_at']);
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System::jsonExit($object->toArray());
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}
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}
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