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<?php
declare(strict_types=1);
namespace PhpMyAdmin;
use PhpMyAdmin\Config\ConfigFile;
use PhpMyAdmin\Config\Forms\User\UserFormList;
use PhpMyAdmin\ConfigStorage\Relation;
use PhpMyAdmin\Dbal\DatabaseName;
use function __;
use function array_flip;
use function array_merge;
use function basename;
use function htmlspecialchars;
use function http_build_query;
use function is_array;
use function is_int;
use function is_numeric;
use function is_string;
use function json_decode;
use function json_encode;
use function str_contains;
use function time;
use function urlencode;
/**
* Functions for displaying user preferences pages
*/
class UserPreferences
{
/** @var Relation */
private $relation;
/** @var Template */
public $template;
public function __construct()
{
global $dbi;
$this->relation = new Relation($dbi);
$this->template = new Template();
}
/**
* Common initialization for user preferences modification pages
*
* @param ConfigFile $cf Config file instance
*/
public function pageInit(ConfigFile $cf): void
{
$forms_all_keys = UserFormList::getFields();
$cf->resetConfigData(); // start with a clean instance
$cf->setAllowedKeys($forms_all_keys);
$cf->setCfgUpdateReadMapping(
[
'Server/hide_db' => 'Servers/1/hide_db',
'Server/only_db' => 'Servers/1/only_db',
]
);
$cf->updateWithGlobalConfig($GLOBALS['cfg']);
}
/**
* Loads user preferences
*
* Returns an array:
* * config_data - path => value pairs
* * mtime - last modification time
* * type - 'db' (config read from pmadb) or 'session' (read from user session)
*
* @psalm-return array{config_data: array, mtime: int, type: 'session'|'db'}
*/
public function load(): array
{
global $dbi;
$relationParameters = $this->relation->getRelationParameters();
if ($relationParameters->userPreferencesFeature === null) {
// no pmadb table, use session storage
if (! isset($_SESSION['userconfig']) || ! is_array($_SESSION['userconfig'])) {
$_SESSION['userconfig'] = ['db' => [], 'ts' => time()];
}
$configData = $_SESSION['userconfig']['db'] ?? null;
$timestamp = $_SESSION['userconfig']['ts'] ?? null;
return [
'config_data' => is_array($configData) ? $configData : [],
'mtime' => is_int($timestamp) ? $timestamp : time(),
'type' => 'session',
];
}
// load configuration from pmadb
$query_table = Util::backquote($relationParameters->userPreferencesFeature->database) . '.'
. Util::backquote($relationParameters->userPreferencesFeature->userConfig);
$query = 'SELECT `config_data`, UNIX_TIMESTAMP(`timevalue`) ts'
. ' FROM ' . $query_table
. ' WHERE `username` = \''
. $dbi->escapeString((string) $relationParameters->user)
. '\'';
$row = $dbi->fetchSingleRow($query, DatabaseInterface::FETCH_ASSOC, DatabaseInterface::CONNECT_CONTROL);
if (! is_array($row) || ! isset($row['config_data']) || ! isset($row['ts'])) {
return ['config_data' => [], 'mtime' => time(), 'type' => 'db'];
}
$configData = is_string($row['config_data']) ? json_decode($row['config_data'], true) : [];
return [
'config_data' => is_array($configData) ? $configData : [],
'mtime' => is_numeric($row['ts']) ? (int) $row['ts'] : time(),
'type' => 'db',
];
}
/**
* Saves user preferences
*
* @param array $config_array configuration array
*
* @return true|Message
*/
public function save(array $config_array)
{
global $dbi;
$relationParameters = $this->relation->getRelationParameters();
$server = $GLOBALS['server'] ?? $GLOBALS['cfg']['ServerDefault'];
$cache_key = 'server_' . $server;
if (
$relationParameters->userPreferencesFeature === null
|| $relationParameters->user === null
|| $relationParameters->db === null
) {
// no pmadb table, use session storage
$_SESSION['userconfig'] = [
'db' => $config_array,
'ts' => time(),
];
if (isset($_SESSION['cache'][$cache_key]['userprefs'])) {
unset($_SESSION['cache'][$cache_key]['userprefs']);
}
return true;
}
// save configuration to pmadb
$query_table = Util::backquote($relationParameters->userPreferencesFeature->database) . '.'
. Util::backquote($relationParameters->userPreferencesFeature->userConfig);
$query = 'SELECT `username` FROM ' . $query_table
. ' WHERE `username` = \''
. $dbi->escapeString($relationParameters->user)
. '\'';
$has_config = $dbi->fetchValue($query, 0, DatabaseInterface::CONNECT_CONTROL);
$config_data = json_encode($config_array);
if ($has_config) {
$query = 'UPDATE ' . $query_table
. ' SET `timevalue` = NOW(), `config_data` = \''
. $dbi->escapeString($config_data)
. '\''
. ' WHERE `username` = \''
. $dbi->escapeString($relationParameters->user)
. '\'';
} else {
$query = 'INSERT INTO ' . $query_table
. ' (`username`, `timevalue`,`config_data`) '
. 'VALUES (\''
. $dbi->escapeString($relationParameters->user) . '\', NOW(), '
. '\'' . $dbi->escapeString($config_data) . '\')';
}
if (isset($_SESSION['cache'][$cache_key]['userprefs'])) {
unset($_SESSION['cache'][$cache_key]['userprefs']);
}
if (! $dbi->tryQuery($query, DatabaseInterface::CONNECT_CONTROL)) {
$message = Message::error(__('Could not save configuration'));
$message->addMessage(Message::error($dbi->getError(DatabaseInterface::CONNECT_CONTROL)), '<br><br>');
if (! $this->hasAccessToDatabase($relationParameters->db)) {
/**
* When phpMyAdmin cached the configuration storage parameters, it checked if the database can be
* accessed, so if it could not be accessed anymore, then the cache must be cleared as it's out of date.
*
* @psalm-suppress MixedArrayAssignment
*/
$_SESSION['relation'][$GLOBALS['server']] = [];
$message->addMessage(Message::error(htmlspecialchars(
__('The phpMyAdmin configuration storage database could not be accessed.')
)), '<br><br>');
}
return $message;
}
return true;
}
private function hasAccessToDatabase(DatabaseName $database): bool
{
$escapedDb = $GLOBALS['dbi']->escapeString($database->getName());
$query = 'SELECT SCHEMA_NAME FROM INFORMATION_SCHEMA.SCHEMATA WHERE SCHEMA_NAME = \'' . $escapedDb . '\';';
if ($GLOBALS['cfg']['Server']['DisableIS']) {
$query = 'SHOW DATABASES LIKE \'' . Util::escapeMysqlWildcards($escapedDb) . '\';';
}
return (bool) $GLOBALS['dbi']->fetchSingleRow($query, 'ASSOC', DatabaseInterface::CONNECT_CONTROL);
}
/**
* Returns a user preferences array filtered by $cfg['UserprefsDisallow']
* (exclude list) and keys from user preferences form (allow list)
*
* @param array $config_data path => value pairs
*
* @return array
*/
public function apply(array $config_data)
{
$cfg = [];
$excludeList = array_flip($GLOBALS['cfg']['UserprefsDisallow']);
$allowList = array_flip(UserFormList::getFields());
// allow some additional fields which are custom handled
$allowList['ThemeDefault'] = true;
$allowList['lang'] = true;
$allowList['Server/hide_db'] = true;
$allowList['Server/only_db'] = true;
$allowList['2fa'] = true;
foreach ($config_data as $path => $value) {
if (! isset($allowList[$path]) || isset($excludeList[$path])) {
continue;
}
Core::arrayWrite($path, $cfg, $value);
}
return $cfg;
}
/**
* Updates one user preferences option (loads and saves to database).
*
* No validation is done!
*
* @param string $path configuration
* @param mixed $value value
* @param mixed $default_value default value
*
* @return true|Message
*/
public function persistOption($path, $value, $default_value)
{
$prefs = $this->load();
if ($value === $default_value) {
if (! isset($prefs['config_data'][$path])) {
return true;
}
unset($prefs['config_data'][$path]);
} else {
$prefs['config_data'][$path] = $value;
}
return $this->save($prefs['config_data']);
}
/**
* Redirects after saving new user preferences
*
* @param string $file_name Filename
* @param array|null $params URL parameters
* @param string $hash Hash value
*/
public function redirect(
$file_name,
$params = null,
$hash = null
): void {
// redirect
$url_params = ['saved' => 1];
if (is_array($params)) {
$url_params = array_merge($params, $url_params);
}
if ($hash) {
$hash = '#' . urlencode($hash);
}
Core::sendHeaderLocation('./' . $file_name
. Url::getCommonRaw($url_params, ! str_contains($file_name, '?') ? '?' : '&') . $hash);
}
/**
* Shows form which allows to quickly load
* settings stored in browser's local storage
*
* @return string
*/
public function autoloadGetHeader()
{
if (isset($_REQUEST['prefs_autoload']) && $_REQUEST['prefs_autoload'] === 'hide') {
$_SESSION['userprefs_autoload'] = true;
return '';
}
$script_name = basename(basename($GLOBALS['PMA_PHP_SELF']));
$return_url = $script_name . '?' . http_build_query($_GET, '', '&');
return $this->template->render('preferences/autoload', [
'hidden_inputs' => Url::getHiddenInputs(),
'return_url' => $return_url,
]);
}
}
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