Viewing file:  common.inc.php (13.79 KB) -rw-r--r--
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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Misc stuff and REQUIRED by ALL the scripts.
* MUST be included by every script
*
* Among other things, it contains the advanced authentication work.
*
* Order of sections for common.inc.php:
*
* the authentication libraries must be before the connection to db
*
* ... so the required order is:
*
* LABEL_variables_init
* - initialize some variables always needed
* LABEL_parsing_config_file
* - parsing of the configuration file
* LABEL_loading_language_file
* - loading language file
* LABEL_setup_servers
* - check and setup configured servers
* LABEL_theme_setup
* - setting up themes
*
* - load of MySQL extension (if necessary)
* - loading of an authentication library
* - db connection
* - authentication work
*
* @package PhpMyAdmin
*/
use PhpMyAdmin\Config;
use PhpMyAdmin\Core;
use PhpMyAdmin\DatabaseInterface;
use PhpMyAdmin\ErrorHandler;
use PhpMyAdmin\LanguageManager;
use PhpMyAdmin\Logging;
use PhpMyAdmin\Message;
use PhpMyAdmin\Plugins\AuthenticationPlugin;
use PhpMyAdmin\Response;
use PhpMyAdmin\Session;
use PhpMyAdmin\ThemeManager;
use PhpMyAdmin\Tracker;
use PhpMyAdmin\Util;
/**
* block attempts to directly run this script
*/
if (getcwd() == dirname(__FILE__)) {
die('Attack stopped');
}
/**
* Minimum PHP version; can't call Core::fatalError() which uses a
* PHP 5 function, so cannot easily localize this message.
*/
if (version_compare(PHP_VERSION, '5.5.0', 'lt')) {
die(
'PHP 5.5+ is required. <br /> Currently installed version is: '
. phpversion()
);
}
/**
* for verification in all procedural scripts under libraries
*/
define('PHPMYADMIN', true);
/**
* Load vendor configuration.
*/
require_once './libraries/vendor_config.php';
/**
* Load hash polyfill.
*/
require_once './libraries/hash.lib.php';
/**
* Activate autoloader
*/
if (! @is_readable(AUTOLOAD_FILE)) {
die(
'File <tt>' . AUTOLOAD_FILE . '</tt> missing or not readable. <br />'
. 'Most likely you did not run Composer to '
. '<a href="https://docs.phpmyadmin.net/en/latest/setup.html#installing-from-git">install library files</a>.'
);
}
require_once AUTOLOAD_FILE;
/**
* Load gettext functions.
*/
PhpMyAdmin\MoTranslator\Loader::loadFunctions();
/**
* initialize the error handler
*/
$GLOBALS['error_handler'] = new ErrorHandler();
/**
* Warning about missing PHP extensions.
*/
Core::checkExtensions();
/**
* Configure required PHP settings.
*/
Core::configure();
/******************************************************************************/
/* start procedural code label_start_procedural */
Core::cleanupPathInfo();
/******************************************************************************/
/* parsing configuration file LABEL_parsing_config_file */
/**
* @global Config $GLOBALS['PMA_Config']
* force reading of config file, because we removed sensitive values
* in the previous iteration
*/
$GLOBALS['PMA_Config'] = new Config(CONFIG_FILE);
/**
* include session handling after the globals, to prevent overwriting
*/
if (! defined('PMA_NO_SESSION')) {
Session::setUp($GLOBALS['PMA_Config'], $GLOBALS['error_handler']);
}
/**
* init some variables LABEL_variables_init
*/
/**
* holds parameters to be passed to next page
* @global array $GLOBALS['url_params']
*/
$GLOBALS['url_params'] = array();
/**
* holds page that should be displayed
* @global string $GLOBALS['goto']
*/
$GLOBALS['goto'] = '';
// Security fix: disallow accessing serious server files via "?goto="
if (Core::checkPageValidity($_REQUEST['goto'])) {
$GLOBALS['goto'] = $_REQUEST['goto'];
$GLOBALS['url_params']['goto'] = $_REQUEST['goto'];
} else {
$GLOBALS['PMA_Config']->removeCookie('goto');
unset($_REQUEST['goto'], $_GET['goto'], $_POST['goto']);
}
/**
* returning page
* @global string $GLOBALS['back']
*/
if (Core::checkPageValidity($_REQUEST['back'])) {
$GLOBALS['back'] = $_REQUEST['back'];
} else {
$GLOBALS['PMA_Config']->removeCookie('back');
unset($_REQUEST['back'], $_GET['back'], $_POST['back']);
}
/**
* Check whether user supplied token is valid, if not remove any possibly
* dangerous stuff from request.
*
* remember that some objects in the session with session_start and __wakeup()
* could access this variables before we reach this point
* f.e. PhpMyAdmin\Config: fontsize
*
* Check for token mismatch only if the Request method is POST
* GET Requests would never have token and therefore checking
* mis-match does not make sense
*
* @todo variables should be handled by their respective owners (objects)
* f.e. lang, server in PhpMyAdmin\Config
*/
$token_mismatch = true;
$token_provided = false;
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
if (Core::isValid($_POST['token'])) {
$token_provided = true;
$token_mismatch = ! @hash_equals($_SESSION[' PMA_token '], $_POST['token']);
}
if ($token_mismatch) {
/* Warn in case the mismatch is result of failed setting of session cookie */
if (isset($_POST['set_session']) && $_POST['set_session'] != session_id()) {
trigger_error(
__(
'Failed to set session cookie. Maybe you are using '
. 'HTTP instead of HTTPS to access phpMyAdmin.'
),
E_USER_ERROR
);
}
/**
* We don't allow any POST operation parameters if the token is mismatched
* or is not provided
*/
$whitelist = array('ajax_request');
PhpMyAdmin\Sanitize::removeRequestVars($whitelist);
}
}
/**
* current selected database
* @global string $GLOBALS['db']
*/
Core::setGlobalDbOrTable('db');
/**
* current selected table
* @global string $GLOBALS['table']
*/
Core::setGlobalDbOrTable('table');
/**
* Store currently selected recent table.
* Affect $GLOBALS['db'] and $GLOBALS['table']
*/
if (Core::isValid($_REQUEST['selected_recent_table'])) {
$recent_table = json_decode($_REQUEST['selected_recent_table'], true);
$GLOBALS['db']
= (array_key_exists('db', $recent_table) && is_string($recent_table['db'])) ?
$recent_table['db'] : '';
$GLOBALS['url_params']['db'] = $GLOBALS['db'];
$GLOBALS['table']
= (array_key_exists('table', $recent_table) && is_string($recent_table['table'])) ?
$recent_table['table'] : '';
$GLOBALS['url_params']['table'] = $GLOBALS['table'];
}
/**
* SQL query to be executed
* @global string $GLOBALS['sql_query']
*/
$GLOBALS['sql_query'] = '';
if (Core::isValid($_POST['sql_query'])) {
$GLOBALS['sql_query'] = $_POST['sql_query'];
}
//$_REQUEST['set_theme'] // checked later in this file LABEL_theme_setup
//$_REQUEST['server']; // checked later in this file
//$_REQUEST['lang']; // checked by LABEL_loading_language_file
/******************************************************************************/
/* loading language file LABEL_loading_language_file */
/**
* lang detection is done here
*/
$language = LanguageManager::getInstance()->selectLanguage();
$language->activate();
/**
* check for errors occurred while loading configuration
* this check is done here after loading language files to present errors in locale
*/
$GLOBALS['PMA_Config']->checkPermissions();
$GLOBALS['PMA_Config']->checkErrors();
/* Check server configuration */
Core::checkConfiguration();
/* Check request for possible attacks */
Core::checkRequest();
/******************************************************************************/
/* setup servers LABEL_setup_servers */
$GLOBALS['PMA_Config']->checkServers();
/**
* current server
* @global integer $GLOBALS['server']
*/
$GLOBALS['server'] = $GLOBALS['PMA_Config']->selectServer();
$GLOBALS['url_params']['server'] = $GLOBALS['server'];
/**
* BC - enable backward compatibility
* exports all configuration settings into $GLOBALS ($GLOBALS['cfg'])
*/
$GLOBALS['PMA_Config']->enableBc();
/******************************************************************************/
/* setup themes LABEL_theme_setup */
ThemeManager::initializeTheme();
if (! defined('PMA_MINIMUM_COMMON')) {
/**
* save some settings in cookies
* @todo should be done in PhpMyAdmin\Config
*/
$GLOBALS['PMA_Config']->setCookie('pma_lang', $GLOBALS['lang']);
ThemeManager::getInstance()->setThemeCookie();
if (! empty($cfg['Server'])) {
/**
* Loads the proper database interface for this server
*/
DatabaseInterface::load();
// get LoginCookieValidity from preferences cache
// no generic solution for loading preferences from cache as some settings
// need to be kept for processing in
// PhpMyAdmin\Config::loadUserPreferences()
$cache_key = 'server_' . $GLOBALS['server'];
if (isset($_SESSION['cache'][$cache_key]['userprefs']['LoginCookieValidity'])
) {
$value
= $_SESSION['cache'][$cache_key]['userprefs']['LoginCookieValidity'];
$GLOBALS['PMA_Config']->set('LoginCookieValidity', $value);
$GLOBALS['cfg']['LoginCookieValidity'] = $value;
unset($value);
}
unset($cache_key);
// Gets the authentication library that fits the $cfg['Server'] settings
// and run authentication
/**
* the required auth type plugin
*/
$auth_class = 'PhpMyAdmin\\Plugins\\Auth\\Authentication' . ucfirst(strtolower($cfg['Server']['auth_type']));
if (! @class_exists($auth_class)) {
Core::fatalError(
__('Invalid authentication method set in configuration:')
. ' ' . $cfg['Server']['auth_type']
);
}
if (isset($_POST['pma_password']) && strlen($_POST['pma_password']) > 256) {
$_POST['pma_password'] = substr($_POST['pma_password'], 0, 256);
}
$auth_plugin = new $auth_class();
$auth_plugin->authenticate();
// Try to connect MySQL with the control user profile (will be used to
// get the privileges list for the current user but the true user link
// must be open after this one so it would be default one for all the
// scripts)
$controllink = false;
if ($cfg['Server']['controluser'] != '') {
$controllink = $GLOBALS['dbi']->connect(
DatabaseInterface::CONNECT_CONTROL
);
}
// Connects to the server (validates user's login)
/** @var DatabaseInterface $userlink */
$userlink = $GLOBALS['dbi']->connect(DatabaseInterface::CONNECT_USER);
if ($userlink === false) {
$auth_plugin->showFailure('mysql-denied');
}
if (! $controllink) {
/*
* Open separate connection for control queries, this is needed
* to avoid problems with table locking used in main connection
* and phpMyAdmin issuing queries to configuration storage, which
* is not locked by that time.
*/
$controllink = $GLOBALS['dbi']->connect(
DatabaseInterface::CONNECT_USER,
null,
DatabaseInterface::CONNECT_CONTROL
);
}
$auth_plugin->rememberCredentials();
$auth_plugin->checkTwoFactor();
/* Log success */
Logging::logUser($cfg['Server']['user']);
if ($GLOBALS['dbi']->getVersion() < $cfg['MysqlMinVersion']['internal']) {
Core::fatalError(
__('You should upgrade to %s %s or later.'),
array('MySQL', $cfg['MysqlMinVersion']['human'])
);
}
// Sets the default delimiter (if specified).
if (!empty($_REQUEST['sql_delimiter'])) {
PhpMyAdmin\SqlParser\Lexer::$DEFAULT_DELIMITER = $_REQUEST['sql_delimiter'];
}
// TODO: Set SQL modes too.
} else { // end server connecting
$response = Response::getInstance();
$response->getHeader()->disableMenuAndConsole();
$response->getFooter()->setMinimal();
}
/**
* check if profiling was requested and remember it
* (note: when $cfg['ServerDefault'] = 0, constant is not defined)
*/
if (isset($_REQUEST['profiling'])
&& Util::profilingSupported()
) {
$_SESSION['profiling'] = true;
} elseif (isset($_REQUEST['profiling_form'])) {
// the checkbox was unchecked
unset($_SESSION['profiling']);
}
/**
* Inclusion of profiling scripts is needed on various
* pages like sql, tbl_sql, db_sql, tbl_select
*/
$response = Response::getInstance();
if (isset($_SESSION['profiling'])) {
$scripts = $response->getHeader()->getScripts();
$scripts->addFile('chart.js');
$scripts->addFile('vendor/jqplot/jquery.jqplot.js');
$scripts->addFile('vendor/jqplot/plugins/jqplot.pieRenderer.js');
$scripts->addFile('vendor/jqplot/plugins/jqplot.highlighter.js');
$scripts->addFile('vendor/jquery/jquery.tablesorter.js');
}
/*
* There is no point in even attempting to process
* an ajax request if there is a token mismatch
*/
if ($response->isAjax() && $_SERVER['REQUEST_METHOD'] == 'POST' && $token_mismatch) {
$response->setRequestStatus(false);
$response->addJSON(
'message',
Message::error(__('Error: Token mismatch'))
);
exit;
}
}
// load user preferences
$GLOBALS['PMA_Config']->loadUserPreferences();
/* Tell tracker that it can actually work */
Tracker::enable();
if (! defined('PMA_MINIMUM_COMMON')
&& ! empty($GLOBALS['server'])
&& isset($GLOBALS['cfg']['ZeroConf'])
&& $GLOBALS['cfg']['ZeroConf'] == true
) {
$GLOBALS['dbi']->postConnectControl();
}
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