mirror of
https://github.com/YunoHost-Apps/phpmyadmin_ynh.git
synced 2024-09-03 19:56:46 +02:00
262 lines
9.3 KiB
PHP
262 lines
9.3 KiB
PHP
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<?php
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/* vim: set expandtab sw=4 ts=4 sts=4: */
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/**
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* HTTP Authentication plugin for phpMyAdmin.
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* NOTE: Requires PHP loaded as a Apache module.
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*
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* @package PhpMyAdmin-Authentication
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* @subpackage HTTP
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*/
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if (! defined('PHPMYADMIN')) {
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exit;
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}
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/* Get the authentication interface */
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require_once 'libraries/plugins/AuthenticationPlugin.class.php';
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/**
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* Handles the HTTP authentication methods
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*
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* @package PhpMyAdmin-Authentication
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*/
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class AuthenticationHttp extends AuthenticationPlugin
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{
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/**
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* Displays authentication form
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*
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* @global string the font face to use in case of failure
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* @global string the default font size to use in case of failure
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* @global string the big font size to use in case of failure
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*
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* @return boolean always true (no return indeed)
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*/
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public function auth()
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{
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/* Perform logout to custom URL */
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if (! empty($_REQUEST['old_usr'])
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&& ! empty($GLOBALS['cfg']['Server']['LogoutURL'])
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) {
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PMA_sendHeaderLocation($GLOBALS['cfg']['Server']['LogoutURL']);
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if (! defined('TESTSUITE')) {
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exit;
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} else {
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return false;
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}
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}
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if (empty($GLOBALS['cfg']['Server']['auth_http_realm'])) {
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if (empty($GLOBALS['cfg']['Server']['verbose'])) {
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$server_message = $GLOBALS['cfg']['Server']['host'];
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} else {
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$server_message = $GLOBALS['cfg']['Server']['verbose'];
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}
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$realm_message = 'phpMyAdmin ' . $server_message;
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} else {
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$realm_message = $GLOBALS['cfg']['Server']['auth_http_realm'];
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}
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// remove non US-ASCII to respect RFC2616
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$realm_message = preg_replace('/[^\x20-\x7e]/i', '', $realm_message);
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header('WWW-Authenticate: Basic realm="' . $realm_message . '"');
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header('HTTP/1.0 401 Unauthorized');
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if (php_sapi_name() !== 'cgi-fcgi') {
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header('status: 401 Unauthorized');
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}
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/* HTML header */
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$response = PMA_Response::getInstance();
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$response->getFooter()->setMinimal();
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$header = $response->getHeader();
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$header->setTitle(__('Access denied'));
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$header->disableMenu();
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$header->setBodyId('loginform');
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$response->addHTML('<h1>');
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$response->addHTML(sprintf(__('Welcome to %s'), ' phpMyAdmin'));
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$response->addHTML('</h1>');
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$response->addHTML('<h3>');
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$response->addHTML(
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PMA_Message::error(
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__('Wrong username/password. Access denied.')
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)
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);
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$response->addHTML('</h3>');
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if (file_exists(CUSTOM_FOOTER_FILE)) {
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include CUSTOM_FOOTER_FILE;
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}
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if (! defined('TESTSUITE')) {
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exit;
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} else {
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return false;
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}
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}
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/**
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* Gets advanced authentication settings
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*
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* @global string $PHP_AUTH_USER the username if register_globals is on
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* @global string $PHP_AUTH_PW the password if register_globals is on
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* @global array the array of server variables if
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* register_globals is off
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* @global array the array of environment variables if
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* register_globals is off
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* @global string the username for the ? server
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* @global string the password for the ? server
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* @global string the username for the WebSite Professional
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* server
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* @global string the password for the WebSite Professional
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* server
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* @global string the username of the user who logs out
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*
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* @return boolean whether we get authentication settings or not
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*/
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public function authCheck()
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{
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global $PHP_AUTH_USER, $PHP_AUTH_PW;
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// Grabs the $PHP_AUTH_USER variable whatever are the values of the
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// 'register_globals' and the 'variables_order' directives
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if (empty($PHP_AUTH_USER)) {
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if (PMA_getenv('PHP_AUTH_USER')) {
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$PHP_AUTH_USER = PMA_getenv('PHP_AUTH_USER');
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} elseif (PMA_getenv('REMOTE_USER')) {
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// CGI, might be encoded, see below
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$PHP_AUTH_USER = PMA_getenv('REMOTE_USER');
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} elseif (PMA_getenv('REDIRECT_REMOTE_USER')) {
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// CGI, might be encoded, see below
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$PHP_AUTH_USER = PMA_getenv('REDIRECT_REMOTE_USER');
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} elseif (PMA_getenv('AUTH_USER')) {
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// WebSite Professional
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$PHP_AUTH_USER = PMA_getenv('AUTH_USER');
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} elseif (PMA_getenv('HTTP_AUTHORIZATION')
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&& false === strpos(PMA_getenv('HTTP_AUTHORIZATION'), '<')
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) {
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// IIS, might be encoded, see below; also prevent XSS
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$PHP_AUTH_USER = PMA_getenv('HTTP_AUTHORIZATION');
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} elseif (PMA_getenv('Authorization')) {
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// FastCGI, might be encoded, see below
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$PHP_AUTH_USER = PMA_getenv('Authorization');
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}
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}
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// Grabs the $PHP_AUTH_PW variable whatever are the values of the
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// 'register_globals' and the 'variables_order' directives
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if (empty($PHP_AUTH_PW)) {
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if (PMA_getenv('PHP_AUTH_PW')) {
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$PHP_AUTH_PW = PMA_getenv('PHP_AUTH_PW');
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} elseif (PMA_getenv('REMOTE_PASSWORD')) {
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// Apache/CGI
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$PHP_AUTH_PW = PMA_getenv('REMOTE_PASSWORD');
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} elseif (PMA_getenv('AUTH_PASSWORD')) {
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// WebSite Professional
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$PHP_AUTH_PW = PMA_getenv('AUTH_PASSWORD');
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}
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}
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// Decode possibly encoded information (used by IIS/CGI/FastCGI)
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// (do not use explode() because a user might have a colon in his password
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if (strcmp(substr($PHP_AUTH_USER, 0, 6), 'Basic ') == 0) {
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$usr_pass = base64_decode(substr($PHP_AUTH_USER, 6));
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if (! empty($usr_pass)) {
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$colon = strpos($usr_pass, ':');
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if ($colon) {
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$PHP_AUTH_USER = substr($usr_pass, 0, $colon);
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$PHP_AUTH_PW = substr($usr_pass, $colon + 1);
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}
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unset($colon);
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}
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unset($usr_pass);
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}
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// User logged out -> ensure the new username is not the same
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$old_usr = isset($_REQUEST['old_usr']) ? $_REQUEST['old_usr'] : '';
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if (! empty($old_usr)
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&& (isset($PHP_AUTH_USER) && $old_usr == $PHP_AUTH_USER)
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) {
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$PHP_AUTH_USER = '';
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// -> delete user's choices that were stored in session
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if (! defined('TESTSUITE')) {
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session_destroy();
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}
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}
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// Returns whether we get authentication settings or not
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if (empty($PHP_AUTH_USER)) {
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return false;
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} else {
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return true;
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}
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}
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/**
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* Set the user and password after last checkings if required
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*
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* @global array $cfg the valid servers settings
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* @global integer $server the id of the current server
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* @global array the current server settings
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* @global string $PHP_AUTH_USER the current username
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* @global string $PHP_AUTH_PW the current password
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*
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* @return boolean always true
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*/
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public function authSetUser()
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{
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global $cfg, $server;
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global $PHP_AUTH_USER, $PHP_AUTH_PW;
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// Ensures valid authentication mode, 'only_db', bookmark database and
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// table names and relation table name are used
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if ($cfg['Server']['user'] != $PHP_AUTH_USER) {
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$servers_cnt = count($cfg['Servers']);
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for ($i = 1; $i <= $servers_cnt; $i++) {
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if (isset($cfg['Servers'][$i])
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&& ($cfg['Servers'][$i]['host'] == $cfg['Server']['host']
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&& $cfg['Servers'][$i]['user'] == $PHP_AUTH_USER)
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) {
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$server = $i;
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$cfg['Server'] = $cfg['Servers'][$i];
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break;
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}
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} // end for
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} // end if
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$cfg['Server']['user'] = $PHP_AUTH_USER;
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$cfg['Server']['password'] = $PHP_AUTH_PW;
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// Avoid showing the password in phpinfo()'s output
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unset($GLOBALS['PHP_AUTH_PW']);
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unset($_SERVER['PHP_AUTH_PW']);
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return true;
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}
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/**
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* User is not allowed to login to MySQL -> authentication failed
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*
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* @return boolean always true (no return indeed)
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*/
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public function authFails()
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{
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$error = $GLOBALS['dbi']->getError();
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if ($error && $GLOBALS['errno'] != 1045) {
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PMA_fatalError($error);
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} else {
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$this->auth();
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return true;
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}
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}
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/**
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* This method is called when any PluginManager to which the observer
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* is attached calls PluginManager::notify()
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*
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* @param SplSubject $subject The PluginManager notifying the observer
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* of an update.
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*
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* @return void
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*/
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public function update (SplSubject $subject)
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{
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}
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}
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