Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
/**
* @copyright Copyright (C) 2010-2022, the Friendica project
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
namespace Friendica\Security;
use Exception;
use Friendica\Core\Hook;
use Friendica\Core\Logger;
use Friendica\Core\Session;
use Friendica\Database\DBA;
use Friendica\DI;
use Friendica\Model\User;
use Friendica\Network\HTTPException\UnauthorizedException;
use Friendica\Util\DateTimeFormat;
/**
* Authentification via the basic auth method
*/
class BasicAuth
{
/**
* @var bool|int
*/
protected static $current_user_id = 0;
/**
* @var array
*/
protected static $current_token = [];
/**
* Get current user id, returns 0 if $login is set to false and not logged in.
* When $login is true, the execution will stop when not logged in.
*
* @param bool $login Perform a login request if "true"
*
* @return int User ID
*/
public static function getCurrentUserID(bool $login)
{
if (empty(self::$current_user_id)) {
self::$current_user_id = self::getUserIdByAuth($login);
}
return (int)self::$current_user_id;
}
public static function setCurrentUserID(int $uid = null)
{
self::$current_user_id = $uid;
}
/**
* Fetch a dummy application token
*
* @return array token
*/
public static function getCurrentApplicationToken()
{
if (empty(self::getCurrentUserID(true))) {
return [];
}
//if (!empty(self::$current_token)) {
// return self::$current_token;
//}
$source = $_REQUEST['source'] ?? '';
// Support for known clients that doesn't send a source name
if (empty($source) && !empty($_SERVER['HTTP_USER_AGENT'])) {
if(strpos($_SERVER['HTTP_USER_AGENT'], "Twidere") !== false) {
$source = 'Twidere';
}
Logger::info('Unrecognized user-agent', ['http_user_agent' => $_SERVER['HTTP_USER_AGENT']]);
} else {
Logger::info('Empty user-agent');
}
if (empty($source)) {
$source = 'api';
}
self::$current_token = [
'uid' => self::$current_user_id,
'id' => 0,
'name' => $source,
'website' => '',
'created_at' => DBA::NULL_DATETIME,
'read' => true,
'write' => true,
'follow' => true,
'push' => false];
return self::$current_token;
}
/**
* Fetch the user id via the auth header information
*
* @param boolean $do_login Perform a login request if not logged in
*
* @return integer User ID
*/
private static function getUserIdByAuth(bool $do_login = true):int
{
$a = DI::app();
self::$current_user_id = 0;
// workaround for HTTP-auth in CGI mode
if (!empty($_SERVER['REDIRECT_REMOTE_USER'])) {
$userpass = base64_decode(substr($_SERVER["REDIRECT_REMOTE_USER"], 6));
if (!empty($userpass) && strpos($userpass, ':')) {
list($name, $password) = explode(':', $userpass);
$_SERVER['PHP_AUTH_USER'] = $name;
$_SERVER['PHP_AUTH_PW'] = $password;
}
}
$user = $_SERVER['PHP_AUTH_USER'] ?? '';
$password = $_SERVER['PHP_AUTH_PW'] ?? '';
// allow "user@server" login (but ignore 'server' part)
$at = strstr($user, "@", true);
if ($at) {
$user = $at;
}
// next code from mod/auth.php. needs better solution
$record = null;
$addon_auth = [
'username' => trim($user),
'password' => trim($password),
'authenticated' => 0,
'user_record' => null,
];
/*
* An addon indicates successful login by setting 'authenticated' to non-zero value and returning a user record
* Addons should never set 'authenticated' except to indicate success - as hooks may be chained
* and later addons should not interfere with an earlier one that succeeded.
*/
Hook::callAll('authenticate', $addon_auth);
if ($addon_auth['authenticated'] && !empty($addon_auth['user_record'])) {
$record = $addon_auth['user_record'];
} else {
try {
$user_id = User::getIdFromPasswordAuthentication(trim($user), trim($password), true);
$record = DBA::selectFirst('user', [], ['uid' => $user_id]);
} catch (Exception $ex) {
$record = [];
}
}
if (empty($record)) {
if (!$do_login) {
return 0;
}
Logger::debug('Access denied', ['parameters' => $_SERVER]);
// Checking for commandline for the tests, we have to avoid to send a header
if (php_sapi_name() !== 'cli') {
header('WWW-Authenticate: Basic realm="Friendica"');
}
throw new UnauthorizedException("This API requires login");
}
// Don't refresh the login date more often than twice a day to spare database writes
$login_refresh = strcmp(DateTimeFormat::utc('now - 12 hours'), $record['login_date']) > 0;
DI::auth()->setForUser($a, $record, false, false, $login_refresh);
Hook::callAll('logged_in', $record);
self::$current_user_id = local_user();
return self::$current_user_id;
}
}