Viewing file:  cookie.auth.lib.php (18.48 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
<?php
/* $Id: cookie.auth.lib.php,v 2.55.2.1.4.1 2006/08/21 11:45:16 lem9 Exp $ */
// vim: 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. |
// +--------------------------------------------------------------------------+
if (!isset($coming_from_common)) {
exit;
}
// timestamp for login timeout
$current_time = time();
// Uses faster mcrypt library if available
// (Note: mcrypt.lib.php needs $cookie_path and $is_https)
if (function_exists('mcrypt_encrypt') || PMA_dl('mcrypt')) {
require_once('./libraries/mcrypt.lib.php');
} else {
require_once('./libraries/blowfish.php');
}
/**
* Sorts available languages by their true names
*
* @param array the array to be sorted
* @param mixed a required parameter
*
* @return the sorted array
*
* @access private
*/
function PMA_cookie_cmp(&$a, $b)
{
return (strcmp($a[1], $b[1]));
} // end of the 'PMA_cmp()' function
/**
* Displays authentication form
*
* @global string the font face to use
* @global string the default font size to use
* @global string the big font size to use
* @global array the list of servers settings
* @global array the list of available translations
* @global string the current language
* @global integer the current server id
* @global string the currect charset for MySQL
* @global array the array of cookie variables if register_globals is
* off
*
* @return boolean always true (no return indeed)
*
* @access public
*/
function PMA_auth()
{
global $cfg, $lang, $server, $convcharset, $conn_error;
// Tries to get the username from cookie whatever are the values of the
// 'register_globals' and the 'variables_order' directives if last login
// should be recalled, else skip the IE autocomplete feature.
if ($cfg['LoginCookieRecall'] && !empty($GLOBALS['cfg']['blowfish_secret'])) {
// username
// do not try to use pma_cookie_username as it was encoded differently
// in previous versions and would produce an undefined offset in blowfish
if (!empty($_COOKIE) && isset($_COOKIE['pma_cookie_username-' . $server])) {
$default_user = $_COOKIE['pma_cookie_username-' . $server];
}
$decrypted_user = isset($default_user) ? PMA_blowfish_decrypt($default_user, $GLOBALS['cfg']['blowfish_secret']) : '';
if (!empty($decrypted_user)) {
$pos = strrpos($decrypted_user, ':');
$default_user = substr($decrypted_user, 0, $pos);
} else {
$default_user = '';
}
// server name
if (!empty($GLOBALS['pma_cookie_servername'])) {
$default_server = $GLOBALS['pma_cookie_servername'];
} elseif (!empty($_COOKIE) && isset($_COOKIE['pma_cookie_servername-' . $server])) {
$default_server = $_COOKIE['pma_cookie_servername-' . $server];
}
$autocomplete = '';
} else {
$default_user = '';
$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_ltr.png';
/* HTML header */
$page_title = 'phpMyAdmin ' . PMA_VERSION;
require('./libraries/header_meta_style.inc.php');
?>
<script type="text/javascript" language="javascript">
//<![CDATA[
// show login form in top frame
if (top != self) {
window.top.location.href=location;
}
//]]>
</script>
</head>
<body class="loginform">
<?php require('./libraries/header_custom.inc.php'); ?>
<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( $GLOBALS['strWelcome'],
'<bdo dir="ltr" xml:lang="en">phpMyAdmin ' . PMA_VERSION . '</bdo>');
?>
</h1>
<?php
// Show error message
if ( !empty($conn_error)) {
echo '<div class="error"><h1>' . $GLOBALS['strError'] . '</h1>' . "\n";
echo $conn_error . '</div>' . "\n";
}
// Displays the languages form
if (empty($cfg['Lang'])) {
echo "\n";
require_once('./libraries/display_select_lang.lib.php');
PMA_select_language(TRUE);
}
echo "\n\n";
// Displays the warning message and the login form
if (empty($GLOBALS['cfg']['blowfish_secret'])) {
?>
<div class="error"><h1><?php echo $GLOBALS['strError']; ?></h1>
<?php echo $GLOBALS['strSecretRequired']; ?>
</div>
<?php
require('./libraries/footer_custom.inc.php');
echo ' </body>' . "\n"
. '</html>';
exit();
}
?>
<br />
<!-- Login form -->
<form method="post" action="index.php" name="login_form"<?php echo $autocomplete; ?> target="_top" class="login">
<fieldset>
<legend><?php echo $GLOBALS['strLogin']; ?></legend>
<?php if ($GLOBALS['cfg']['AllowArbitraryServer']) { ?>
<div class="item">
<label for="input_servername"><?php echo $GLOBALS['strLogServer']; ?></label>
<input type="text" name="pma_servername" id="input_servername" value="<?php echo (isset($default_server) ? htmlspecialchars($default_server) : ''); ?>" size="24" class="textfield" />
</div>
<?php } ?>
<div class="item">
<label for="input_username"><?php echo $GLOBALS['strLogUsername']; ?></label>
<input type="text" name="pma_username" id="input_username" value="<?php echo (isset($default_user) ? htmlspecialchars($default_user) : ''); ?>" size="24" class="textfield" />
</div>
<div class="item">
<label for="input_password"><?php echo $GLOBALS['strLogPassword']; ?></label>
<input type="password" name="pma_password" id="input_password" value="" size="24" class="textfield" />
</div>
<?php
if (count($cfg['Servers']) > 1) {
echo "\n";
?>
<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 = \'\'" ';
}
?>
>
<?php
require_once('./libraries/select_server.lib.php');
PMA_select_server(FALSE, FALSE);
?>
</select>
</div>
<?php
} else {
echo ' <input type="hidden" name="server" value="' . $server . '" />';
} // end if (server choice)
?>
</fieldset>
<fieldset class="tblFooters">
<input value="<?php echo $GLOBALS['strGo']; ?>" type="submit" />
<input type="hidden" name="lang" value="<?php echo $lang; ?>" />
<input type="hidden" name="convcharset" value="<?php echo $convcharset; ?>" />
<?php
if (isset($GLOBALS['target'])) {
echo ' <input type="hidden" name="target" value="' . htmlspecialchars($GLOBALS['target']) . '" />' . "\n";
}
if (isset($GLOBALS['db'])) {
echo ' <input type="hidden" name="db" value="' . htmlspecialchars($GLOBALS['db']) . '" />' . "\n";
}
if (isset($GLOBALS['table'])) {
echo ' <input type="hidden" name="table" value="' . htmlspecialchars($GLOBALS['table']) . '" />' . "\n";
}
?>
</fieldset>
</form>
<div class="notice"><?php echo $GLOBALS['strCookiesRequired']; ?></div>
<?php
if ( ! empty( $GLOBALS['PMA_errors'] ) && is_array( $GLOBALS['PMA_errors'] ) ) {
foreach ( $GLOBALS['PMA_errors'] as $error ) {
echo '<div class="error">' . $error . '</div>' . "\n";
}
}
?>
<script type="text/javascript" language="javascript">
<!--
var uname = document.forms['login_form'].elements['pma_username'];
var pword = document.forms['login_form'].elements['pma_password'];
if (uname.value == '') {
uname.focus();
} else {
pword.focus();
}
//-->
</script>
<?php require('./libraries/footer_custom.inc.php'); ?>
</body>
</html>
<?php
exit();
return TRUE;
} // 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 cookie variables if register_globals is
* off
* @global string the servername sent by the login form
* @global string the username sent by the login form
* @global string the password sent by the login form
* @global string the username of the user who logs out
* @global boolean whether the login/password pair is grabbed from a
* cookie or not
*
* @return boolean whether we get authentication settings or not
*
* @access public
*/
function PMA_auth_check()
{
global $PHP_AUTH_USER, $PHP_AUTH_PW, $pma_auth_server;
global $pma_servername, $pma_username, $pma_password, $old_usr, $server;
global $from_cookie;
// avoid an error in mcrypt
if (empty($GLOBALS['cfg']['blowfish_secret'])) {
return FALSE;
}
// Initialization
$PHP_AUTH_USER = $PHP_AUTH_PW = '';
$from_cookie = FALSE;
$from_form = FALSE;
// The user wants to be logged out -> delete password cookie
if (!empty($old_usr)) {
setcookie('pma_cookie_password-' . $server, '', 0, $GLOBALS['cookie_path'], '', $GLOBALS['is_https']);
}
// The user just logged in
elseif (!empty($pma_username)) {
$PHP_AUTH_USER = $pma_username;
$PHP_AUTH_PW = (empty($pma_password)) ? '' : $pma_password;
if ($GLOBALS['cfg']['AllowArbitraryServer']) {
$pma_auth_server = $pma_servername;
}
$from_form = TRUE;
}
// At the end, try to set the $PHP_AUTH_USER & $PHP_AUTH_PW variables
// from cookies whatever are the values of the 'register_globals' and
// the 'variables_order' directives
else {
if ($GLOBALS['cfg']['AllowArbitraryServer']) {
// servername
if (!empty($pma_cookie_servername)) {
$pma_auth_server = $pma_cookie_servername;
$from_cookie = TRUE;
} elseif (!empty($_COOKIE) && isset($_COOKIE['pma_cookie_servername-' . $server])) {
$pma_auth_server = $_COOKIE['pma_cookie_servername-' . $server];
$from_cookie = TRUE;
}
}
// username
if (!empty($_COOKIE) && isset($_COOKIE['pma_cookie_username-' . $server])) {
$PHP_AUTH_USER = $_COOKIE['pma_cookie_username-' . $server];
$from_cookie = TRUE;
}
$decrypted_user = PMA_blowfish_decrypt($PHP_AUTH_USER, $GLOBALS['cfg']['blowfish_secret']);
if (!empty($decrypted_user)) {
$pos = strrpos($decrypted_user, ':');
$PHP_AUTH_USER = substr($decrypted_user, 0, $pos);
$decrypted_time = (int)substr($decrypted_user, $pos + 1);
} else {
$decrypted_time = 0;
}
// User inactive too long
if ($decrypted_time > 0 && $decrypted_time < $GLOBALS['current_time'] - $GLOBALS['cfg']['LoginCookieValidity']) {
// Display an error message only if the inactivity has lasted
// less than 4 times the timeout value. This is to avoid
// alerting users with a error after "much" time has passed,
// for example next morning.
if ($decrypted_time > $GLOBALS['current_time'] - ($GLOBALS['cfg']['LoginCookieValidity'] * 4)) {
$GLOBALS['no_activity'] = TRUE;
PMA_auth_fails();
}
return FALSE;
}
// password
if (!empty($pma_cookie_password)) {
$PHP_AUTH_PW = $pma_cookie_password;
} elseif (!empty($_COOKIE) && isset($_COOKIE['pma_cookie_password-' . $server])) {
$PHP_AUTH_PW = $_COOKIE['pma_cookie_password-' . $server];
} else {
$from_cookie = FALSE;
}
$PHP_AUTH_PW = PMA_blowfish_decrypt($PHP_AUTH_PW, $GLOBALS['cfg']['blowfish_secret'] . $decrypted_time);
if ($PHP_AUTH_PW == "\xff(blank)") {
$PHP_AUTH_PW = '';
}
}
// Returns whether we get authentication settings or not
if (!$from_cookie && !$from_form) {
return FALSE;
} elseif ($from_cookie) {
return TRUE;
} else {
// we don't need to strip here, it is done in grab_globals
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
* @global boolean whether the login/password pair has been grabbed from
* a cookie or not
*
* @return boolean always true
*
* @access public
*/
function PMA_auth_set_user()
{
global $cfg, $server;
global $PHP_AUTH_USER, $PHP_AUTH_PW, $pma_auth_server;
global $from_cookie;
// Ensures valid authentication mode, 'only_db', bookmark database and
// table names and relation table name are used
if ($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
$pma_server_changed = FALSE;
if ($GLOBALS['cfg']['AllowArbitraryServer']
&& isset($pma_auth_server) && !empty($pma_auth_server)
&& ($cfg['Server']['host'] != $pma_auth_server)
) {
$cfg['Server']['host'] = $pma_auth_server;
$pma_server_changed = TRUE;
}
$cfg['Server']['user'] = $PHP_AUTH_USER;
$cfg['Server']['password'] = $PHP_AUTH_PW;
// Name and password cookies needs to be refreshed each time
// Duration = one month for username
setcookie('pma_cookie_username-' . $server,
PMA_blowfish_encrypt($cfg['Server']['user'] . ':' . $GLOBALS['current_time'],
$GLOBALS['cfg']['blowfish_secret']),
time() + (60 * 60 * 24 * 30),
$GLOBALS['cookie_path'], '',
$GLOBALS['is_https']);
// Duration = till the browser is closed for password (we don't want this to be saved)
setcookie('pma_cookie_password-' . $server,
PMA_blowfish_encrypt(!empty($cfg['Server']['password']) ? $cfg['Server']['password'] : "\xff(blank)",
$GLOBALS['cfg']['blowfish_secret'] . $GLOBALS['current_time']),
0,
$GLOBALS['cookie_path'], '',
$GLOBALS['is_https']);
// Set server cookies if required (once per session) and, in this case, force
// reload to ensure the client accepts cookies
if (!$from_cookie) {
if ($GLOBALS['cfg']['AllowArbitraryServer']) {
if (isset($pma_auth_server) && !empty($pma_auth_server) && $pma_server_changed) {
// Duration = one month for serverrname
setcookie('pma_cookie_servername-' . $server,
$cfg['Server']['host'],
time() + (60 * 60 * 24 * 30),
$GLOBALS['cookie_path'], '',
$GLOBALS['is_https']);
} else {
// Delete servername cookie
setcookie('pma_cookie_servername-' . $server, '', 0, $GLOBALS['cookie_path'], '', $GLOBALS['is_https']);
}
}
// URL where to go:
$redirect_url = $cfg['PmaAbsoluteUri'] . 'index.php';
// any parameters to pass?
$url_params = array();
if ( isset($GLOBALS['db']) && strlen($GLOBALS['db']) ) {
$url_params['db'] = $GLOBALS['db'];
}
if ( isset($GLOBALS['table']) && strlen($GLOBALS['table']) ) {
$url_params['table'] = $GLOBALS['table'];
}
// Language change from the login panel needs to be remembered
if ( ! empty($GLOBALS['lang']) ) {
$url_params['lang'] = $GLOBALS['lang'];
}
// any target to pass?
if ( ! empty($GLOBALS['target']) && $GLOBALS['target'] != 'index.php' ) {
$url_params['target'] = $GLOBALS['target'];
}
define('PMA_COMING_FROM_COOKIE_LOGIN',1);
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
*
* @return boolean always true (no return indeed)
*
* @access public
*/
function PMA_auth_fails()
{
global $conn_error, $server;
// Deletes password cookie and displays the login form
setcookie('pma_cookie_password-' . $server, '', 0, $GLOBALS['cookie_path'], '', $GLOBALS['is_https']);
if (isset($GLOBALS['allowDeny_forbidden']) && $GLOBALS['allowDeny_forbidden']) {
$conn_error = $GLOBALS['strAccessDenied'];
} elseif (isset($GLOBALS['no_activity']) && $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'));
}
} elseif (PMA_DBI_getError()) {
$conn_error = PMA_sanitize(PMA_DBI_getError());
} elseif (isset($php_errormsg)) {
$conn_error = $php_errormsg;
} else {
$conn_error = $GLOBALS['strCannotLogin'];
}
PMA_auth();
return TRUE;
} // end of the 'PMA_auth_fails()' function
?>
|