115 lines
3.4 KiB
PHP
115 lines
3.4 KiB
PHP
<?php
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/* vim: set expandtab sw=4 ts=4 sts=4: */
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/**
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* session handling
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*
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* @version $Id$
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* @todo add failover or warn if sessions are not configured properly
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* @todo add an option to use mm-module for session handler
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* @see http://www.php.net/session
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* @uses session_name()
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* @uses session_start()
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* @uses ini_set()
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*/
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// verify if PHP supports session, die if it does not
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if (!@function_exists('session_name')) {
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PMA_fatalError('strCantLoad', 'session');
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} elseif (ini_get('session.auto_start') == true && session_name() != 'phpMyAdmin') {
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$_SESSION = array();
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if (isset($_COOKIE[session_name()])) {
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PMA_removeCookie(session_name());
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}
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session_unset();
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@session_destroy();
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}
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// disable starting of sessions before all settings are done
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// does not work, besides how it is written in php manual
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//ini_set('session.auto_start', 0);
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// session cookie settings
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session_set_cookie_params(0, PMA_Config::getCookiePath() . '; HttpOnly',
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'', PMA_Config::isHttps());
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// cookies are safer
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ini_set('session.use_cookies', true);
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// but not all user allow cookies
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ini_set('session.use_only_cookies', false);
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ini_set('session.use_trans_sid', true);
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ini_set('url_rewriter.tags',
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'a=href,frame=src,input=src,form=fakeentry,fieldset=');
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//ini_set('arg_separator.output', '&');
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// delete session/cookies when browser is closed
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ini_set('session.cookie_lifetime', 0);
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// warn but dont work with bug
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ini_set('session.bug_compat_42', false);
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ini_set('session.bug_compat_warn', true);
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// use more secure session ids (with PHP 5)
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if (substr(PHP_OS, 0, 3) != 'WIN') {
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ini_set('session.hash_function', 1);
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ini_set('session.hash_bits_per_character', 6);
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}
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// some pages (e.g. stylesheet) may be cached on clients, but not in shared
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// proxy servers
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session_cache_limiter('private');
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// start the session
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// on some servers (for example, sourceforge.net), we get a permission error
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// on the session data directory, so I add some "@"
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// See bug #1538132. This would block normal behavior on a cluster
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//ini_set('session.save_handler', 'files');
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$session_name = 'phpMyAdmin';
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@session_name($session_name);
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if (! isset($_COOKIE[$session_name])) {
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// on first start of session we will check for errors
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// f.e. session dir cannot be accessed - session file not created
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ob_start();
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$old_display_errors = ini_get('display_errors');
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$old_error_reporting = error_reporting(E_ALL);
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ini_set('display_errors', 1);
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$r = session_start();
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ini_set('display_errors', $old_display_errors);
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error_reporting($old_error_reporting);
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unset($old_display_errors, $old_error_reporting);
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$session_error = ob_get_contents();
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ob_end_clean();
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if ($r !== true || ! empty($session_error)) {
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setcookie($session_name, '', 1);
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PMA_fatalError('strSessionStartupErrorGeneral');
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}
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} else {
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@session_start();
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}
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/**
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* Token which is used for authenticating access queries.
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* (we use "space PMA_token space" to prevent overwriting)
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*/
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if (!isset($_SESSION[' PMA_token '])) {
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$_SESSION[' PMA_token '] = md5(uniqid(rand(), true));
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}
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/**
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* tries to secure session from hijacking and fixation
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* should be called before login and after successfull login
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* (only required if sensitive information stored in session)
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*
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* @uses session_regenerate_id() to secure session from fixation
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*/
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function PMA_secureSession()
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{
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// prevent session fixation and XSS
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session_regenerate_id(true);
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}
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?>
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