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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Set of functions used to run cookie based authentication.
* Thanks to Piotr Roszatycki <d3xter at users.sourceforge.net> and
* Dan Wilson who built this patch for the Debian package.
*
* @package phpMyAdmin-Auth-Cookie
* @version $Id: cookie.auth.lib.php 12396 2009-05-07 07:56:13Z helmo $
*/
if (! defined('PHPMYADMIN')) {
exit;
}
/**
* Swekey authentication functions.
*/
require './libraries/auth/swekey/swekey.auth.lib.php';
if (function_exists('mcrypt_encrypt')) {
/**
* Uses faster mcrypt library if available
* (as this is not called from anywhere else, put the code in-line
* for faster execution)
*/
/**
* Initialization
* Store the initialization vector because it will be needed for
* further decryption. I don't think necessary to have one iv
* per server so I don't put the server number in the cookie name.
*/
if (empty($_COOKIE['pma_mcrypt_iv'])
|| false === ($iv = base64_decode($_COOKIE['pma_mcrypt_iv'], true))) {
srand((double) microtime() * 1000000);
$td = mcrypt_module_open(MCRYPT_BLOWFISH, '', MCRYPT_MODE_CBC, '');
if ($td === false) {
trigger_error(PMA_sanitize(sprintf($strCantLoad, 'mcrypt')), E_USER_WARNING);
}
$iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
PMA_setCookie('pma_mcrypt_iv', base64_encode($iv));
}
/**
* Encryption using blowfish algorithm (mcrypt)
*
* @param string original data
* @param string the secret
*
* @return string the encrypted result
*
* @access public
*
* @author lem9
*/
function PMA_blowfish_encrypt($data, $secret)
{
global $iv;
return base64_encode(mcrypt_encrypt(MCRYPT_BLOWFISH, $secret, $data, MCRYPT_MODE_CBC, $iv));
}
/**
* Decryption using blowfish algorithm (mcrypt)
*
* @param string encrypted data
* @param string the secret
*
* @return string original data
*
* @access public
*
* @author lem9
*/
function PMA_blowfish_decrypt($encdata, $secret)
{
global $iv;
return trim(mcrypt_decrypt(MCRYPT_BLOWFISH, $secret, base64_decode($encdata), MCRYPT_MODE_CBC, $iv));
}
} else {
require_once './libraries/blowfish.php';
if (!$GLOBALS['cfg']['McryptDisableWarning']) {
trigger_error(PMA_sanitize(sprintf($strCantLoad, 'mcrypt')), E_USER_WARNING);
}
}
/**
* Returns blowfish secret or generates one if needed.
* @uses $cfg['blowfish_secret']
* @uses $_SESSION['auto_blowfish_secret']
*
* @access public
*/
function PMA_get_blowfish_secret() {
if (empty($GLOBALS['cfg']['blowfish_secret'])) {
if (empty($_SESSION['auto_blowfish_secret'])) {
$_SESSION['auto_blowfish_secret'] = uniqid('', true);
}
return $_SESSION['auto_blowfish_secret'];
} else {
return $GLOBALS['cfg']['blowfish_secret'];
}
}
/**
* Displays authentication form
*
* this function MUST exit/quit the application
*
* @uses $GLOBALS['server']
* @uses $GLOBALS['PHP_AUTH_USER']
* @uses $GLOBALS['pma_auth_server']
* @uses $GLOBALS['text_dir']
* @uses $GLOBALS['pmaThemeImage']
* @uses $GLOBALS['charset']
* @uses $GLOBALS['target']
* @uses $GLOBALS['db']
* @uses $GLOBALS['table']
* @uses $GLOBALS['strWelcome']
* @uses $GLOBALS['strSecretRequired']
* @uses $GLOBALS['strError']
* @uses $GLOBALS['strLogin']
* @uses $GLOBALS['strLogServer']
* @uses $GLOBALS['strLogUsername']
* @uses $GLOBALS['strLogPassword']
* @uses $GLOBALS['strServerChoice']
* @uses $GLOBALS['strGo']
* @uses $GLOBALS['strCookiesRequired']
* @uses $GLOBALS['strPmaDocumentation']
* @uses $GLOBALS['pmaThemeImage']
* @uses $cfg['Servers']
* @uses $cfg['LoginCookieRecall']
* @uses $cfg['Lang']
* @uses $cfg['Server']
* @uses $cfg['ReplaceHelpImg']
* @uses $cfg['blowfish_secret']
* @uses $cfg['AllowArbitraryServer']
* @uses $_COOKIE
* @uses $_REQUEST['old_usr']
* @uses PMA_sendHeaderLocation()
* @uses PMA_select_language()
* @uses PMA_select_server()
* @uses file_exists()
* @uses sprintf()
* @uses count()
* @uses htmlspecialchars()
* @uses is_array()
* @global string the last connection error
*
* @access public
*/
function PMA_auth()
{
global $conn_error;
/* Perform logout to custom URL */
if (! empty($_REQUEST['old_usr'])
&& ! empty($GLOBALS['cfg']['Server']['LogoutURL'])) {
PMA_sendHeaderLocation($GLOBALS['cfg']['Server']['LogoutURL']);
exit;
}
/* No recall if blowfish secret is not configured as it would produce garbage */
if ($GLOBALS['cfg']['LoginCookieRecall'] && !empty($GLOBALS['cfg']['blowfish_secret'])) {
$default_user = $GLOBALS['PHP_AUTH_USER'];
$default_server = $GLOBALS['pma_auth_server'];
$autocomplete = '';
} else {
$default_user = '';
$default_server = '';
// skip the IE autocomplete feature.
$autocomplete = ' autocomplete="off"';
}
$cell_align = ($GLOBALS['text_dir'] == 'ltr') ? 'left' : 'right';
// Defines the charset to be used
header('Content-Type: text/html; charset=' . $GLOBALS['charset']);
// Defines the "item" image depending on text direction
$item_img = $GLOBALS['pmaThemeImage'] . 'item_' . $GLOBALS['text_dir'] . '.png';
/* HTML header; do not show here the PMA version to improve security */
$page_title = 'phpMyAdmin ';
require './libraries/header_meta_style.inc.php';
?>
<script type="text/javascript">
//<![CDATA[
// show login form in top frame
if (top != self) {
window.top.location.href=location;
}
//]]>
</script>
</head>
<body class="loginform">
<?php
if (file_exists('./config.header.inc.php')) {
require './config.header.inc.php';
}
?>
<div class="container">
<a href="http://www.phpmyadmin.net" target="_blank" class="logo"><?php
$logo_image = $GLOBALS['pmaThemeImage'] . 'logo_right.png';
if (@file_exists($logo_image)) {
echo '<img src="' . $logo_image . '" id="imLogo" name="imLogo" alt="phpMyAdmin" border="0" />';
} else {
echo '<img name="imLogo" id="imLogo" src="' . $GLOBALS['pmaThemeImage'] . 'pma_logo.png' . '" '
. 'border="0" width="88" height="31" alt="phpMyAdmin" />';
}
?></a>
<h1>
<?php
echo sprintf($GLOBALS['strWelcome'],
'<bdo dir="ltr" xml:lang="en">' . $page_title . '</bdo>');
?>
</h1>
<?php
// Show error message
if (! empty($conn_error)) {
PMA_Message::rawError($conn_error)->display();
}
// Displays the languages form
if (empty($GLOBALS['cfg']['Lang'])) {
require_once './libraries/display_select_lang.lib.php';
// use fieldset, don't show doc link
PMA_select_language(true, false);
}
?>
<br />
<!-- Login form -->
<form method="post" action="index.php" name="login_form"<?php echo $autocomplete; ?> target="_top" class="login">
<fieldset>
<legend>
<?php
echo $GLOBALS['strLogin'];
echo '<a href="./Documentation.html" target="documentation" ' .
'title="' . $GLOBALS['strPmaDocumentation'] . '">';
if ($GLOBALS['cfg']['ReplaceHelpImg']) {
echo '<img class="icon" src="' . $GLOBALS['pmaThemeImage'] . 'b_help.png" width="11" height="11" alt="' . $GLOBALS['strPmaDocumentation'] . '" />';
} else {
echo '(*)';
}
echo '</a>';
?>
</legend>
<?php if ($GLOBALS['cfg']['AllowArbitraryServer']) { ?>
<div class="item">
<label for="input_servername" title="<?php echo $GLOBALS['strLogServerHelp']; ?>"><?php echo $GLOBALS['strLogServer']; ?></label>
<input type="text" name="pma_servername" id="input_servername" value="<?php echo htmlspecialchars($default_server); ?>" size="24" class="textfield" title="<?php echo $GLOBALS['strLogServerHelp']; ?>" />
</div>
<?php } ?>
<div class="item">
<label for="input_username"><?php echo $GLOBALS['strLogUsername']; ?></label>
<input type="text" name="pma_username" id="input_username" value="<?php echo htmlspecialchars($default_user); ?>" size="24" class="textfield"/>
</div>
<div class="item">
<label for="input_password"><?php echo $GLOBALS['strLogPassword']; ?></label>
<input type="password" name="pma_password" id="input_password" value="" size="24" class="textfield" />
</div>
<?php
if (count($GLOBALS['cfg']['Servers']) > 1) {
?>
<div class="item">
<label for="select_server"><?php echo $GLOBALS['strServerChoice']; ?>:</label>
<select name="server" id="select_server"
<?php
if ($GLOBALS['cfg']['AllowArbitraryServer']) {
echo ' onchange="document.forms[\'login_form\'].elements[\'pma_servername\'].value = \'\'" ';
}
echo '>';
require_once './libraries/select_server.lib.php';
PMA_select_server(false, false);
echo '</select></div>';
} else {
echo ' <input type="hidden" name="server" value="' . $GLOBALS['server'] . '" />';
} // end if (server choice)
?>
</fieldset>
<fieldset class="tblFooters">
<input value="<?php echo $GLOBALS['strGo']; ?>" type="submit" id="input_go" />
<?php
$_form_params = array();
if (! empty($GLOBALS['target'])) {
$_form_params['target'] = $GLOBALS['target'];
}
if (! empty($GLOBALS['db'])) {
$_form_params['db'] = $GLOBALS['db'];
}
if (! empty($GLOBALS['table'])) {
$_form_params['table'] = $GLOBALS['table'];
}
// do not generate a "server" hidden field as we want the "server"
// drop-down to have priority
echo PMA_generate_common_hidden_inputs($_form_params, '', 0, 'server');
?>
</fieldset>
</form>
<?php
// BEGIN Swekey Integration
Swekey_login('input_username', 'input_go');
// END Swekey Integration
// show the "Cookies required" message only if cookies are disabled
// (we previously tried to set some cookies)
if (empty($_COOKIE)) {
trigger_error($GLOBALS['strCookiesRequired'], E_USER_NOTICE);
}
if ($GLOBALS['error_handler']->hasDisplayErrors()) {
echo '<div>';
$GLOBALS['error_handler']->dispErrors();
echo '</div>';
}
?>
</div>
<script type="text/javascript">
// <![CDATA[
function PMA_focusInput()
{
var input_username = document.getElementById('input_username');
var input_password = document.getElementById('input_password');
if (input_username.value == '') {
input_username.focus();
} else {
input_password.focus();
}
}
window.setTimeout('PMA_focusInput()', 500);
// ]]>
</script>
<?php
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
*
* this function DOES NOT check authentication - it just checks/provides
* authentication credentials required to connect to the MySQL server
* usually with PMA_DBI_connect()
*
* it returns false if something is missing - which usually leads to
* PMA_auth() which displays login form
*
* it returns true if all seems ok which usually leads to PMA_auth_set_user()
*
* it directly switches to PMA_auth_fails() if user inactivity timout is reached
*
* @todo AllowArbitraryServer on does not imply that the user wants an
* arbitrary server, or? so we should also check if this is filled and
* not only if allowed
* @uses $GLOBALS['PHP_AUTH_USER']
* @uses $GLOBALS['PHP_AUTH_PW']
* @uses $GLOBALS['no_activity']
* @uses $GLOBALS['server']
* @uses $GLOBALS['from_cookie']
* @uses $GLOBALS['pma_auth_server']
* @uses $cfg['AllowArbitraryServer']
* @uses $cfg['LoginCookieValidity']
* @uses $cfg['Servers']
* @uses $_REQUEST['old_usr'] from logout link
* @uses $_REQUEST['pma_username'] from login form
* @uses $_REQUEST['pma_password'] from login form
* @uses $_REQUEST['pma_servername'] from login form
* @uses $_COOKIE
* @uses $_SESSION['last_access_time']
* @uses PMA_removeCookie()
* @uses PMA_blowfish_decrypt()
* @uses PMA_auth_fails()
* @uses time()
*
* @return boolean whether we get authentication settings or not
*
* @access public
*/
function PMA_auth_check()
{
// Initialization
/**
* @global $GLOBALS['pma_auth_server'] the user provided server to connect to
*/
$GLOBALS['pma_auth_server'] = '';
$GLOBALS['PHP_AUTH_USER'] = $GLOBALS['PHP_AUTH_PW'] = '';
$GLOBALS['from_cookie'] = false;
// BEGIN Swekey Integration
if (! Swekey_auth_check()) {
return false;
}
// END Swekey Integration
if (defined('PMA_CLEAR_COOKIES')) {
foreach($GLOBALS['cfg']['Servers'] as $key => $val) {
PMA_removeCookie('pmaPass-' . $key);
PMA_removeCookie('pmaServer-' . $key);
PMA_removeCookie('pmaUser-' . $key);
}
return false;
}
if (! empty($_REQUEST['old_usr'])) {
// The user wants to be logged out
// -> delete his choices that were stored in session
// according to the PHP manual we should do this before the destroy:
//$_SESSION = array();
// but we still need some parts of the session information
// in libraries/header_meta_style.inc.php
session_destroy();
// -> delete password cookie(s)
if ($GLOBALS['cfg']['LoginCookieDeleteAll']) {
foreach($GLOBALS['cfg']['Servers'] as $key => $val) {
PMA_removeCookie('pmaPass-' . $key);
if (isset($_COOKIE['pmaPass-' . $key])) {
unset($_COOKIE['pmaPass-' . $key]);
}
}
} else {
PMA_removeCookie('pmaPass-' . $GLOBALS['server']);
if (isset($_COOKIE['pmaPass-' . $GLOBALS['server']])) {
unset($_COOKIE['pmaPass-' . $GLOBALS['server']]);
}
}
}
if (! empty($_REQUEST['pma_username'])) {
// The user just logged in
$GLOBALS['PHP_AUTH_USER'] = $_REQUEST['pma_username'];
$GLOBALS['PHP_AUTH_PW'] = empty($_REQUEST['pma_password']) ? '' : $_REQUEST['pma_password'];
if ($GLOBALS['cfg']['AllowArbitraryServer'] && isset($_REQUEST['pma_servername'])) {
$GLOBALS['pma_auth_server'] = $_REQUEST['pma_servername'];
}
return true;
}
// At the end, try to set the $GLOBALS['PHP_AUTH_USER']
// and $GLOBALS['PHP_AUTH_PW'] variables from cookies
// servername
if ($GLOBALS['cfg']['AllowArbitraryServer']
&& ! empty($_COOKIE['pmaServer-' . $GLOBALS['server']])) {
$GLOBALS['pma_auth_server'] = $_COOKIE['pmaServer-' . $GLOBALS['server']];
}
// username
if (empty($_COOKIE['pmaUser-' . $GLOBALS['server']])) {
return false;
}
$GLOBALS['PHP_AUTH_USER'] = PMA_blowfish_decrypt(
$_COOKIE['pmaUser-' . $GLOBALS['server']],
PMA_get_blowfish_secret());
// user was never logged in since session start
if (empty($_SESSION['last_access_time'])) {
return false;
}
// User inactive too long
if ($_SESSION['last_access_time'] < time() - $GLOBALS['cfg']['LoginCookieValidity']) {
PMA_cacheUnset('is_create_db_priv', true);
PMA_cacheUnset('is_process_priv', true);
PMA_cacheUnset('is_reload_priv', true);
PMA_cacheUnset('db_to_create', true);
PMA_cacheUnset('dbs_where_create_table_allowed', true);
$GLOBALS['no_activity'] = true;
PMA_auth_fails();
exit;
}
// password
if (empty($_COOKIE['pmaPass-' . $GLOBALS['server']])) {
return false;
}
$GLOBALS['PHP_AUTH_PW'] = PMA_blowfish_decrypt(
$_COOKIE['pmaPass-' . $GLOBALS['server']],
PMA_get_blowfish_secret());
if ($GLOBALS['PHP_AUTH_PW'] == "\xff(blank)") {
$GLOBALS['PHP_AUTH_PW'] = '';
}
$GLOBALS['from_cookie'] = true;
return true;
} // end of the 'PMA_auth_check()' function
/**
* Set the user and password after last checkings if required
*
* @uses $GLOBALS['PHP_AUTH_USER']
* @uses $GLOBALS['PHP_AUTH_PW']
* @uses $GLOBALS['server']
* @uses $GLOBALS['from_cookie']
* @uses $GLOBALS['pma_auth_server']
* @uses $cfg['Server']
* @uses $cfg['AllowArbitraryServer']
* @uses $cfg['LoginCookieStore']
* @uses $cfg['PmaAbsoluteUri']
* @uses $_SESSION['last_access_time']
* @uses PMA_COMING_FROM_COOKIE_LOGIN
* @uses PMA_setCookie()
* @uses PMA_blowfish_encrypt()
* @uses PMA_removeCookie()
* @uses PMA_sendHeaderLocation()
* @uses time()
* @uses define()
* @return boolean always true
*
* @access public
*/
function PMA_auth_set_user()
{
global $cfg;
// Ensures valid authentication mode, 'only_db', bookmark database and
// table names and relation table name are used
if ($cfg['Server']['user'] != $GLOBALS['PHP_AUTH_USER']) {
foreach ($cfg['Servers'] as $idx => $current) {
if ($current['host'] == $cfg['Server']['host']
&& $current['port'] == $cfg['Server']['port']
&& $current['socket'] == $cfg['Server']['socket']
&& $current['ssl'] == $cfg['Server']['ssl']
&& $current['connect_type'] == $cfg['Server']['connect_type']
&& $current['user'] == $GLOBALS['PHP_AUTH_USER']) {
$GLOBALS['server'] = $idx;
$cfg['Server'] = $current;
break;
}
} // end foreach
} // end if
if ($GLOBALS['cfg']['AllowArbitraryServer']
&& ! empty($GLOBALS['pma_auth_server'])) {
/* Allow to specify 'host port' */
$parts = explode(' ', $GLOBALS['pma_auth_server']);
if (count($parts) == 2) {
$tmp_host = $parts[0];
$tmp_port = $parts[1];
} else {
$tmp_host = $GLOBALS['pma_auth_server'];
$tmp_port = '';
}
if ($cfg['Server']['host'] != $GLOBALS['pma_auth_server']) {
$cfg['Server']['host'] = $tmp_host;
if (!empty($tmp_port)) {
$cfg['Server']['port'] = $tmp_port;
}
}
unset($tmp_host, $tmp_port, $parts);
}
$cfg['Server']['user'] = $GLOBALS['PHP_AUTH_USER'];
$cfg['Server']['password'] = $GLOBALS['PHP_AUTH_PW'];
$_SESSION['last_access_time'] = time();
// Name and password cookies need to be refreshed each time
// Duration = one month for username
PMA_setCookie('pmaUser-' . $GLOBALS['server'],
PMA_blowfish_encrypt($cfg['Server']['user'],
PMA_get_blowfish_secret()));
// Duration = as configured
PMA_setCookie('pmaPass-' . $GLOBALS['server'],
PMA_blowfish_encrypt(!empty($cfg['Server']['password']) ? $cfg['Server']['password'] : "\xff(blank)",
PMA_get_blowfish_secret()),
null,
$GLOBALS['cfg']['LoginCookieStore']);
// Set server cookies if required (once per session) and, in this case, force
// reload to ensure the client accepts cookies
if (! $GLOBALS['from_cookie']) {
if ($GLOBALS['cfg']['AllowArbitraryServer']) {
if (! empty($GLOBALS['pma_auth_server'])) {
// Duration = one month for servername
PMA_setCookie('pmaServer-' . $GLOBALS['server'], $cfg['Server']['host']);
} else {
// Delete servername cookie
PMA_removeCookie('pmaServer-' . $GLOBALS['server']);
}
}
// URL where to go:
$redirect_url = $cfg['PmaAbsoluteUri'] . 'index.php';
// any parameters to pass?
$url_params = array();
if (strlen($GLOBALS['db'])) {
$url_params['db'] = $GLOBALS['db'];
}
if (strlen($GLOBALS['table'])) {
$url_params['table'] = $GLOBALS['table'];
}
// any target to pass?
if (! empty($GLOBALS['target']) && $GLOBALS['target'] != 'index.php') {
$url_params['target'] = $GLOBALS['target'];
}
/**
* whether we come from a fresh cookie login
*/
define('PMA_COMING_FROM_COOKIE_LOGIN', true);
PMA_sendHeaderLocation($redirect_url . PMA_generate_common_url($url_params, '&'));
exit();
} // end if
return true;
} // end of the 'PMA_auth_set_user()' function
/**
* User is not allowed to login to MySQL -> authentication failed
*
* prepares error message and switches to PMA_auth() which display the error
* and the login form
*
* this function MUST exit/quit the application,
* currently doen by call to PMA_auth()
*
* @todo $php_errormsg is invalid here!? it will never be set in this scope
* @uses $GLOBALS['server']
* @uses $GLOBALS['allowDeny_forbidden']
* @uses $GLOBALS['strAccessDenied']
* @uses $GLOBALS['strNoActivity']
* @uses $GLOBALS['strCannotLogin']
* @uses $GLOBALS['no_activity']
* @uses $cfg['LoginCookieValidity']
* @uses PMA_removeCookie()
* @uses PMA_getenv()
* @uses PMA_DBI_getError()
* @uses PMA_sanitize()
* @uses PMA_auth()
* @uses sprintf()
* @uses basename()
* @access public
*/
function PMA_auth_fails()
{
global $conn_error;
// Deletes password cookie and displays the login form
PMA_removeCookie('pmaPass-' . $GLOBALS['server']);
if (! empty($GLOBALS['login_without_password_is_forbidden'])) {
$conn_error = $GLOBALS['strLoginWithoutPassword'];
} elseif (! empty($GLOBALS['allowDeny_forbidden'])) {
$conn_error = $GLOBALS['strAccessDenied'];
} elseif (! empty($GLOBALS['no_activity'])) {
$conn_error = sprintf($GLOBALS['strNoActivity'], $GLOBALS['cfg']['LoginCookieValidity']);
// Remember where we got timeout to return on same place
if (PMA_getenv('SCRIPT_NAME')) {
$GLOBALS['target'] = basename(PMA_getenv('SCRIPT_NAME'));
// avoid "missing parameter: field" on re-entry
if ('tbl_alter.php' == $GLOBALS['target']) {
$GLOBALS['target'] = 'tbl_structure.php';
}
}
} elseif (PMA_DBI_getError()) {
$conn_error = PMA_sanitize(PMA_DBI_getError());
} elseif (isset($php_errormsg)) {
$conn_error = $php_errormsg;
} else {
$conn_error = $GLOBALS['strCannotLogin'];
}
// needed for PHP-CGI (not need for FastCGI or mod-php)
header('Cache-Control: no-store, no-cache, must-revalidate');
header('Pragma: no-cache');
PMA_auth();
} // end of the 'PMA_auth_fails()' function
?>
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