/phpmyadmin/libraries/auth/cookie.auth.lib.php
PHP | 594 lines | 363 code | 69 blank | 162 comment | 88 complexity | ba5e26450e5af300ac64f2c742a31309 MD5 | raw file
Possible License(s): Apache-2.0, MPL-2.0-no-copyleft-exception, LGPL-2.1, BSD-2-Clause, GPL-2.0, LGPL-3.0
- <?php
- /* vim: set expandtab sw=4 ts=4 sts=4: */
- /**
- * Set of functions used to run cookie based authentication.
- *
- * @package PhpMyAdmin-Auth-Cookie
- */
- 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) {
- die(__('Failed to use Blowfish from mcrypt!'));
- }
- $iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
- $GLOBALS['PMA_Config']->setCookie('pma_mcrypt_iv', base64_encode($iv));
- }
- /**
- * Encryption using blowfish algorithm (mcrypt)
- *
- * @param string original data
- * @param string the secret
- *
- * @return string the encrypted result
- *
- * @access public
- *
- */
- function PMA_blowfish_encrypt($data, $secret)
- {
- global $iv;
- return base64_encode(mcrypt_encrypt(MCRYPT_BLOWFISH, $secret, $data, MCRYPT_MODE_CBC, $iv));
- }
- /**
- * Decryption using blowfish algorithm (mcrypt)
- *
- * @param string encrypted data
- * @param string the secret
- *
- * @return string original data
- *
- * @access public
- *
- */
- function PMA_blowfish_decrypt($encdata, $secret)
- {
- global $iv;
- return trim(mcrypt_decrypt(MCRYPT_BLOWFISH, $secret, base64_decode($encdata), MCRYPT_MODE_CBC, $iv));
- }
- } else {
- include_once './libraries/blowfish.php';
- }
- /**
- * Returns blowfish secret or generates one if needed.
- *
- * @access public
- * @return string
- */
- function PMA_get_blowfish_secret()
- {
- if (empty($GLOBALS['cfg']['blowfish_secret'])) {
- if (empty($_SESSION['auto_blowfish_secret'])) {
- // this returns 23 characters
- $_SESSION['auto_blowfish_secret'] = uniqid('', true);
- }
- return $_SESSION['auto_blowfish_secret'];
- } else {
- // apply md5() to work around too long secrets (returns 32 characters)
- return md5($GLOBALS['cfg']['blowfish_secret']);
- }
- }
- /**
- * Displays authentication form
- *
- * this function MUST exit/quit the application
- *
- * @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=utf-8');
- /* HTML header; do not show here the PMA version to improve security */
- $page_title = 'phpMyAdmin ';
- include './libraries/header_meta_style.inc.php';
- // if $page_title is set, this script uses it as the title:
- include './libraries/header_scripts.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(CUSTOM_HEADER_FILE)) {
- include CUSTOM_HEADER_FILE;
- }
- ?>
- <div class="container">
- <a href="<?php echo PMA_linkURL('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(__('Welcome to %s'),
- '<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'])) {
- include_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 $autocomplete; ?> target="_top" class="login">
- <fieldset>
- <legend>
- <?php
- echo __('Log in');
- echo '<a href="./Documentation.html" target="documentation" ' .
- 'title="' . __('phpMyAdmin documentation') . '"> ';
- if ($GLOBALS['cfg']['ReplaceHelpImg']) {
- echo PMA_getImage('b_help.png', __('phpMyAdmin documentation'));
- } else {
- echo '(*)';
- }
- echo '</a>';
- ?>
- </legend>
- <?php if ($GLOBALS['cfg']['AllowArbitraryServer']) { ?>
- <div class="item">
- <label for="input_servername" title="<?php echo __('You can enter hostname/IP address and port separated by space.'); ?>"><?php echo __('Server:'); ?></label>
- <input type="text" name="pma_servername" id="input_servername" value="<?php echo htmlspecialchars($default_server); ?>" size="24" class="textfield" title="<?php echo __('You can enter hostname/IP address and port separated by space.'); ?>" />
- </div>
- <?php } ?>
- <div class="item">
- <label for="input_username"><?php echo __('Username:'); ?></label>
- <input type="text" name="pma_username" id="input_username" value="<?php echo htmlspecialchars($default_user); ?>" size="24" class="textfield"/>
- </div>
- <div class="item">
- <label for="input_password"><?php echo __('Password:'); ?></label>
- <input type="password" name="pma_password" id="input_password" value="" size="24" class="textfield" />
- </div>
- <?php
- if (count($GLOBALS['cfg']['Servers']) > 1) {
- ?>
- <div class="item">
- <label for="select_server"><?php echo __('Server Choice'); ?>:</label>
- <select name="server" id="select_server"
- <?php
- if ($GLOBALS['cfg']['AllowArbitraryServer']) {
- echo ' onchange="document.forms[\'login_form\'].elements[\'pma_servername\'].value = \'\'" ';
- }
- echo '>';
- include_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 __('Go'); ?>" 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($_COOKIE)) {
- trigger_error(__('Cookies must be enabled past this point.'), E_USER_NOTICE);
- }
- if ($GLOBALS['error_handler']->hasDisplayErrors()) {
- echo '<div>';
- $GLOBALS['error_handler']->dispErrors();
- echo '</div>';
- }
- ?>
- </div>
- <?php
- if (file_exists(CUSTOM_FOOTER_FILE)) {
- include CUSTOM_FOOTER_FILE;
- }
- ?>
- </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
- *
- * @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) {
- $GLOBALS['PMA_Config']->removeCookie('pmaPass-' . $key);
- $GLOBALS['PMA_Config']->removeCookie('pmaServer-' . $key);
- $GLOBALS['PMA_Config']->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) {
- $GLOBALS['PMA_Config']->removeCookie('pmaPass-' . $key);
- if (isset($_COOKIE['pmaPass-' . $key])) {
- unset($_COOKIE['pmaPass-' . $key]);
- }
- }
- } else {
- $GLOBALS['PMA_Config']->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
- *
- * @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'] = $GLOBALS['PHP_AUTH_PW'];
- // Avoid showing the password in phpinfo()'s output
- unset($GLOBALS['PHP_AUTH_PW']);
- unset($_SERVER['PHP_AUTH_PW']);
- $_SESSION['last_access_time'] = time();
- // Name and password cookies need to be refreshed each time
- // Duration = one month for username
- $GLOBALS['PMA_Config']->setCookie('pmaUser-' . $GLOBALS['server'],
- PMA_blowfish_encrypt($cfg['Server']['user'],
- PMA_get_blowfish_secret()));
- // Duration = as configured
- $GLOBALS['PMA_Config']->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
- $GLOBALS['PMA_Config']->setCookie('pmaServer-' . $GLOBALS['server'], $cfg['Server']['host']);
- } else {
- // Delete servername cookie
- $GLOBALS['PMA_Config']->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'] = $GLOBALS['target'];
- }
- /**
- * whether we come from a fresh cookie login
- */
- define('PMA_COMING_FROM_COOKIE_LOGIN', true);
- /**
- * Clear user cache.
- */
- PMA_clearUserCache();
- PMA_sendHeaderLocation($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()
- *
- * @access public
- */
- function PMA_auth_fails()
- {
- global $conn_error;
- // Deletes password cookie and displays the login form
- $GLOBALS['PMA_Config']->removeCookie('pmaPass-' . $GLOBALS['server']);
- if (! empty($GLOBALS['login_without_password_is_forbidden'])) {
- $conn_error = __('Login without a password is forbidden by configuration (see AllowNoPassword)');
- } elseif (! empty($GLOBALS['allowDeny_forbidden'])) {
- $conn_error = __('Access denied');
- } elseif (! empty($GLOBALS['no_activity'])) {
- $conn_error = sprintf(__('No activity within %s seconds; please log in again'), $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 = '#' . $GLOBALS['errno'] . ' ' . __('Cannot log in to the MySQL server');
- } else {
- $conn_error = __('Cannot log in to the MySQL server');
- }
- // 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
- ?>