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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Set of functions used to run http authentication.
* NOTE: Requires PHP loaded as a Apache module.
*
* @package phpMyAdmin-Auth-HTTP
* @version $Id$
*/
/**
* Displays authentication form
*
* @global string the font face to use in case of failure
* @global string the default font size to use in case of failure
* @global string the big font size to use in case of failure
*
* @return boolean always true (no return indeed)
*
* @access public
*/
function PMA_auth()
{
/* Perform logout to custom URL */
if (!empty($_REQUEST['old_usr']) && !empty($GLOBALS['cfg']['Server']['LogoutURL'])) {
PMA_sendHeaderLocation($GLOBALS['cfg']['Server']['LogoutURL']);
exit;
}
if (empty($GLOBALS['cfg']['Server']['verbose'])) {
$server_message = $GLOBALS['cfg']['Server']['host'];
} else {
$server_message = $GLOBALS['cfg']['Server']['verbose'];
}
// remove non US-ASCII to respect RFC2616
$server_message = preg_replace('/[^\x20-\x7e]/i', '', $server_message);
header('WWW-Authenticate: Basic realm="phpMyAdmin ' . $server_message . '"');
header('HTTP/1.0 401 Unauthorized');
if (php_sapi_name() !== 'cgi-fcgi') {
header('status: 401 Unauthorized');
}
// Defines the charset to be used
header('Content-Type: text/html; charset=' . $GLOBALS['charset']);
/* HTML header */
$page_title = $GLOBALS['strAccessDenied'];
require './libraries/header_meta_style.inc.php';
?>
</head>
<body>
<?php
if (file_exists('./config.header.inc.php')) {
require './config.header.inc.php';
}
?>
<br /><br />
<center>
<h1><?php echo sprintf($GLOBALS['strWelcome'], ' phpMyAdmin'); ?></h1>
</center>
<br />
<?php
PMA_Message::error('strWrongUser')->display();
if (file_exists('./config.footer.inc.php')) {
require './config.footer.inc.php';
}
?>
</body>
</html>
<?php
exit();
} // end of the 'PMA_auth()' function
/**
* Gets advanced authentication settings
*
* @global string the username if register_globals is on
* @global string the password if register_globals is on
* @global array the array of server variables if register_globals is
* off
* @global array the array of environment variables if register_globals
* is off
* @global string the username for the ? server
* @global string the password for the ? server
* @global string the username for the WebSite Professional server
* @global string the password for the WebSite Professional server
* @global string the username of the user who logs out
*
* @return boolean whether we get authentication settings or not
*
* @access public
*/
function PMA_auth_check()
{
global $PHP_AUTH_USER, $PHP_AUTH_PW;
global $old_usr;
// Grabs the $PHP_AUTH_USER variable whatever are the values of the
// 'register_globals' and the 'variables_order' directives
if (empty($PHP_AUTH_USER)) {
if (PMA_getenv('PHP_AUTH_USER')) {
$PHP_AUTH_USER = PMA_getenv('PHP_AUTH_USER');
} elseif (PMA_getenv('REMOTE_USER')) {
// CGI, might be encoded, see below
$PHP_AUTH_USER = PMA_getenv('REMOTE_USER');
} elseif (PMA_getenv('REDIRECT_REMOTE_USER')) {
// CGI, might be encoded, see below
$PHP_AUTH_USER = PMA_getenv('REDIRECT_REMOTE_USER');
} elseif (PMA_getenv('AUTH_USER')) {
// WebSite Professional
$PHP_AUTH_USER = PMA_getenv('AUTH_USER');
} elseif (PMA_getenv('HTTP_AUTHORIZATION')) {
// IIS, might be encoded, see below
$PHP_AUTH_USER = PMA_getenv('HTTP_AUTHORIZATION');
} elseif (PMA_getenv('Authorization')) {
// FastCGI, might be encoded, see below
$PHP_AUTH_USER = PMA_getenv('Authorization');
}
}
// Grabs the $PHP_AUTH_PW variable whatever are the values of the
// 'register_globals' and the 'variables_order' directives
if (empty($PHP_AUTH_PW)) {
if (PMA_getenv('PHP_AUTH_PW')) {
$PHP_AUTH_PW = PMA_getenv('PHP_AUTH_PW');
} elseif (PMA_getenv('REMOTE_PASSWORD')) {
// Apache/CGI
$PHP_AUTH_PW = PMA_getenv('REMOTE_PASSWORD');
} elseif (PMA_getenv('AUTH_PASSWORD')) {
// WebSite Professional
$PHP_AUTH_PW = PMA_getenv('AUTH_PASSWORD');
}
}
// Decode possibly encoded information (used by IIS/CGI/FastCGI)
// (do not use explode() because a user might have a colon in his password
if (strcmp(substr($PHP_AUTH_USER, 0, 6), 'Basic ') == 0) {
$usr_pass = base64_decode(substr($PHP_AUTH_USER, 6));
if (! empty($usr_pass)) {
$colon = strpos($usr_pass, ':');
if ($colon) {
$PHP_AUTH_USER = substr($usr_pass, 0, $colon);
$PHP_AUTH_PW = substr($usr_pass, $colon + 1);
}
unset($colon);
}
unset($usr_pass);
}
// User logged out -> ensure the new username is not the same
if (!empty($old_usr)
&& (isset($PHP_AUTH_USER) && $old_usr == $PHP_AUTH_USER)) {
$PHP_AUTH_USER = '';
// -> delete user's choices that were stored in session
session_destroy();
}
// Returns whether we get authentication settings or not
if (empty($PHP_AUTH_USER)) {
return false;
} else {
return true;
}
} // end of the 'PMA_auth_check()' function
/**
* Set the user and password after last checkings if required
*
* @global array the valid servers settings
* @global integer the id of the current server
* @global array the current server settings
* @global string the current username
* @global string the current password
*
* @return boolean always true
*
* @access public
*/
function PMA_auth_set_user()
{
global $cfg, $server;
global $PHP_AUTH_USER, $PHP_AUTH_PW;
// Ensures valid authentication mode, 'only_db', bookmark database and
// table names and relation table name are used
if ($cfg['Server']['user'] != $PHP_AUTH_USER) {
$servers_cnt = count($cfg['Servers']);
for ($i = 1; $i <= $servers_cnt; $i++) {
if (isset($cfg['Servers'][$i])
&& ($cfg['Servers'][$i]['host'] == $cfg['Server']['host'] && $cfg['Servers'][$i]['user'] == $PHP_AUTH_USER)) {
$server = $i;
$cfg['Server'] = $cfg['Servers'][$i];
break;
}
} // end for
} // end if
$cfg['Server']['user'] = $PHP_AUTH_USER;
$cfg['Server']['password'] = $PHP_AUTH_PW;
return true;
} // end of the 'PMA_auth_set_user()' function
/**
* User is not allowed to login to MySQL -> authentication failed
*
* @return boolean always true (no return indeed)
*
* @access public
*/
function PMA_auth_fails()
{
$error = PMA_DBI_getError();
if ($error && $GLOBALS['errno'] != 1045) {
PMA_fatalError($error);
} else {
PMA_auth();
return true;
}
} // end of the 'PMA_auth_fails()' function
?>
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