mirror of
https://github.com/friendica/friendica
synced 2024-12-25 16:40:15 +00:00
196 lines
5.2 KiB
PHP
196 lines
5.2 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\Security;
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use Exception;
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use Friendica\Core\Hook;
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use Friendica\Core\Logger;
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use Friendica\Core\Session;
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use Friendica\Database\DBA;
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use Friendica\DI;
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use Friendica\Model\User;
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use Friendica\Network\HTTPException\UnauthorizedException;
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use Friendica\Util\DateTimeFormat;
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/**
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* Authentification via the basic auth method
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*/
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class BasicAuth
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{
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/**
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* @var bool|int
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*/
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protected static $current_user_id = 0;
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/**
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* @var array
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*/
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protected static $current_token = [];
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/**
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* Get current user id, returns 0 if $login is set to false and not logged in.
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* When $login is true, the execution will stop when not logged in.
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*
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* @param bool $login Perform a login request if "true"
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*
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* @return int User ID
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*/
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public static function getCurrentUserID(bool $login)
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{
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if (empty(self::$current_user_id)) {
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self::$current_user_id = self::getUserIdByAuth($login);
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}
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return (int)self::$current_user_id;
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}
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/**
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* Fetch a dummy application token
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*
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* @return array token
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*/
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public static function getCurrentApplicationToken()
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{
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if (empty(self::getCurrentUserID(true))) {
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return [];
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}
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if (!empty(self::$current_token)) {
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return self::$current_token;
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}
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$source = $_REQUEST['source'] ?? '';
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// Support for known clients that doesn't send a source name
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if (empty($source) && !empty($_SERVER['HTTP_USER_AGENT'])) {
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if(strpos($_SERVER['HTTP_USER_AGENT'], "Twidere") !== false) {
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$source = 'Twidere';
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}
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Logger::info('Unrecognized user-agent', ['http_user_agent' => $_SERVER['HTTP_USER_AGENT']]);
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} else {
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Logger::info('Empty user-agent');
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}
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if (empty($source)) {
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$source = 'api';
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}
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self::$current_token = [
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'uid' => self::$current_user_id,
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'id' => 0,
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'name' => $source,
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'website' => '',
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'created_at' => DBA::NULL_DATETIME,
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'read' => true,
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'write' => true,
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'follow' => true,
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'push' => false];
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return self::$current_token;
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}
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/**
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* Fetch the user id via the auth header information
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*
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* @param boolean $do_login Perform a login request if not logged in
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*
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* @return integer User ID
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*/
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private static function getUserIdByAuth(bool $do_login = true):int
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{
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$a = DI::app();
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Session::set('allow_api', false);
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self::$current_user_id = 0;
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// workaround for HTTP-auth in CGI mode
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if (!empty($_SERVER['REDIRECT_REMOTE_USER'])) {
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$userpass = base64_decode(substr($_SERVER["REDIRECT_REMOTE_USER"], 6));
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if (!empty($userpass) && strpos($userpass, ':')) {
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list($name, $password) = explode(':', $userpass);
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$_SERVER['PHP_AUTH_USER'] = $name;
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$_SERVER['PHP_AUTH_PW'] = $password;
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}
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}
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$user = $_SERVER['PHP_AUTH_USER'] ?? '';
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$password = $_SERVER['PHP_AUTH_PW'] ?? '';
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// allow "user@server" login (but ignore 'server' part)
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$at = strstr($user, "@", true);
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if ($at) {
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$user = $at;
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}
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// next code from mod/auth.php. needs better solution
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$record = null;
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$addon_auth = [
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'username' => trim($user),
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'password' => trim($password),
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'authenticated' => 0,
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'user_record' => null,
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];
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/*
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* An addon indicates successful login by setting 'authenticated' to non-zero value and returning a user record
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* Addons should never set 'authenticated' except to indicate success - as hooks may be chained
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* and later addons should not interfere with an earlier one that succeeded.
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*/
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Hook::callAll('authenticate', $addon_auth);
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if ($addon_auth['authenticated'] && !empty($addon_auth['user_record'])) {
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$record = $addon_auth['user_record'];
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} else {
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try {
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$user_id = User::getIdFromPasswordAuthentication(trim($user), trim($password), true);
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$record = DBA::selectFirst('user', [], ['uid' => $user_id]);
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} catch (Exception $ex) {
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$record = [];
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}
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}
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if (empty($record)) {
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if (!$do_login) {
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return 0;
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}
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Logger::debug('Access denied', ['parameters' => $_SERVER]);
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header('WWW-Authenticate: Basic realm="Friendica"');
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throw new UnauthorizedException("This API requires login");
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}
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// Don't refresh the login date more often than twice a day to spare database writes
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$login_refresh = strcmp(DateTimeFormat::utc('now - 12 hours'), $record['login_date']) > 0;
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DI::auth()->setForUser($a, $record, false, false, $login_refresh);
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Session::set('allow_api', true);
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Hook::callAll('logged_in', $record);
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if (Session::get('allow_api')) {
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self::$current_user_id = local_user();
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} else {
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self::$current_user_id = 0;
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}
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return self::$current_user_id;
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}
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}
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