mirror of
https://github.com/Yetangitu/ampache
synced 2025-10-03 09:49:30 +02:00

The refactoring I've been doing has reminded me of my strong preference for spaces, and I feel inclined to impose my will on the tree.
721 lines
23 KiB
PHP
721 lines
23 KiB
PHP
<?php
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/* vim:set softtabstop=4 shiftwidth=4 expandtab: */
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/**
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*
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* LICENSE: GNU General Public License, version 2 (GPLv2)
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* Copyright 2001 - 2013 Ampache.org
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License v2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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/**
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* vauth Class
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*
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* This class handles all of the session related stuff in Ampache
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* it takes over for the vauth libs, and takes some stuff out of other
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* classes where it didn't belong
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*
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*/
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class vauth {
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/**
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* Constructor
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* This should never be called
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*/
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private function __construct() {
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// Rien a faire
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} // __construct
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/**
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* open
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* This function is for opening a new session so we just verify that we
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* have a database connection, nothing more is needed
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*/
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public static function open($save_path, $session_name) {
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if (!is_resource(Dba::dbh())) {
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debug_event('SESSION', 'Error: no database connection session failed', '1');
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return false;
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}
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return true;
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} // open
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/**
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* close
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* This is run on the end of a session, nothing to do here for now
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*/
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public static function close() {
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return true;
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} // close
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/**
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* read
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* This takes a key and then looks in the database and returns the value
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*/
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public static function read($key) {
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$results = self::get_session_data($key);
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if (!is_array($results)) {
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debug_event('SESSION', 'Unable to read session from key ' . $key . ' no data found', 5);
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return '';
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}
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return $results['value'];
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} // read
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/**
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* write
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* This saves the session information into the database
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*/
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public static function write($key, $value) {
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if (defined('NO_SESSION_UPDATE')) { return true; }
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$length = Config::get('session_length');
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$value = Dba::escape($value);
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$key = Dba::escape($key);
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// Check to see if remember me cookie is set, if so use remember
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// length, otherwise use the session length
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$expire
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= isset($_COOKIE[Config::get('session_name') . '_remember'])
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? time() + Config::get('remember_length')
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: time() + Config::get('session_length');
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$sql = "UPDATE `session` SET `value`='$value', " .
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"`expire`='$expire' WHERE `id`='$key'";
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$db_results = Dba::read($sql);
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debug_event('SESSION', 'Writing to ' . $key . ' with expire ' . $expire . ' ' . Dba::error(), '6');
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return $db_results;
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} // write
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/**
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* destroy
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* This removes the specified session from the database
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*/
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public static function destroy($key) {
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$key = Dba::escape($key);
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if (!strlen($key)) { return false; }
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// Remove anything and EVERYTHING
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$sql = "DELETE FROM `session` WHERE `id`='$key'";
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$db_results = Dba::write($sql);
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debug_event('SESSION', 'Deleting Session with key:' . $key, '6');
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// Destroy our cookie!
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setcookie(Config::get('session_name'), '', time() - 86400);
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return true;
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} // destroy
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/**
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* gc
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* This function is randomly called and it cleans up the spoo
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*/
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public static function gc($maxlifetime) {
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$sql = "DELETE FROM `session` WHERE `expire` < '" . time() . "'";
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$db_results = Dba::write($sql);
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// Also clean up things that use sessions as keys
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Query::gc();
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Tmp_Playlist::gc();
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return true;
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} // gc
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/**
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* logout
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* This is called when you want to log out and nuke your session
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* This is the function used for the Ajax logouts, if no id is passed
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* it tries to find one from the session
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*/
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public static function logout($key='', $relogin=true) {
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// If no key is passed try to find the session id
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$key = $key ? $key : session_id();
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// Nuke the cookie before all else
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self::destroy($key);
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if ((! $relogin) && Config::get('logout_redirect')) {
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$target = Config::get('logout_redirect');
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}
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else {
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$target = Config::get('web_path') . '/login.php';
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}
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// Do a quick check to see if this is an AJAXed logout request
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// if so use the iframe to redirect
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if (defined('AJAX_INCLUDE')) {
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ob_end_clean();
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ob_start();
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/* Set the correct headers */
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header("Content-type: text/xml; charset=" . Config::get('site_charset'));
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header("Content-Disposition: attachment; filename=ajax.xml");
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header("Expires: Tuesday, 27 Mar 1984 05:00:00 GMT");
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header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
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header("Cache-Control: no-store, no-cache, must-revalidate");
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header("Pragma: no-cache");
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$results['rfc3514'] = '<script type="text/javascript">reloadRedirect("' . $target . '")</script>';
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echo xml_from_array($results);
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}
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else {
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/* Redirect them to the login page */
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header('Location: ' . $target);
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}
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exit;
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} // logout
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/**
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* get_session_data
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* This takes a key and returns the raw data from the database, nothing
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* to see here move along people
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*/
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public static function get_session_data($key) {
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$key = Dba::escape($key);
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$sql = "SELECT * FROM `session` WHERE `id`='$key' AND `expire` > '" . time() . "'";
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$db_results = Dba::read($sql);
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if ($results = Dba::fetch_assoc($db_results)) {
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return $results;
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}
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return false;
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} // get_session_data
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/**
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* create_cookie
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* This is separated into its own function because of some flaws in
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* specific webservers *cough* IIS *cough* which prevent us from setting
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* a cookie at the same time as a header redirect. As such on view of a
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* login a cookie is set with the proper name
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*/
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public static function create_cookie() {
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/* Setup the cookie prefs before we throw down, this is very important */
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$cookie_life = Config::get('cookie_life');
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$cookie_path = Config::get('cookie_path');
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$cookie_domain = false;
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$cookie_secure = Config::get('cookie_secure');
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session_set_cookie_params($cookie_life,$cookie_path,$cookie_domain,$cookie_secure);
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session_name(Config::get('session_name'));
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/* Start the session */
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self::ungimp_ie();
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session_start();
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} // create_cookie, just watch out for the cookie monster
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/**
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* create_remember_cookie
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* This function just creates the remember me cookie, nothing special
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*/
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public static function create_remember_cookie() {
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$remember_length = Config::get('remember_length');
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$session_name = Config::get('session_name');
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Config::set('cookie_life', $remember_length, true);
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setcookie($session_name . '_remember',"Rappelez-vous, rappelez-vous le 27 mars", time() + $remember_length, '/');
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} // create_remember_cookie
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/**
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* session_create
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* This is called when you want to create a new session
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* it takes care of setting the initial cookie, and inserting the first
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* chunk of data, nifty ain't it!
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*/
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public static function session_create($data) {
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// Regenerate the session ID to prevent fixation
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switch ($data['type']) {
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case 'xml-rpc':
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case 'api':
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$key = md5(uniqid(rand(), true));
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break;
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case 'mysql':
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default:
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session_regenerate_id();
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// Before refresh we don't have the cookie so we
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// have to use session ID
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$key = session_id();
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break;
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} // end switch on data type
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$username = Dba::escape($data['username']);
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$ip = $_SERVER['REMOTE_ADDR']
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? Dba::escape(inet_pton($_SERVER['REMOTE_ADDR']))
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: '0';
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$type = Dba::escape($data['type']);
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$value = Dba::escape($data['value']);
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$agent = Dba::escape(substr($_SERVER['HTTP_USER_AGENT'], 0, 254));
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$expire = Dba::escape(time() + Config::get('session_length'));
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/* We can't have null things here people */
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if (!strlen($value)) { $value = ' '; }
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/* Insert the row */
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$sql = "INSERT INTO `session` (`id`,`username`,`ip`,`type`,`agent`,`value`,`expire`) " .
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" VALUES ('$key','$username','$ip','$type','$agent','$value','$expire')";
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$db_results = Dba::write($sql);
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if (!$db_results) {
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debug_event('SESSION', "Session Creation Failed with Query: $sql and " . Dba::error(), '1');
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return false;
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}
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debug_event('SESSION', 'Session Created:' . $key, '6');
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return $key;
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} // session_create
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/**
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* check_session
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* This checks for an existing session. If it's still valid we go ahead
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* and start it and return true.
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*/
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public static function check_session() {
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$session_name = Config::get('session_name');
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// No cookie no go!
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if (!isset($_COOKIE[$session_name])) { return false; }
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// Check for a remember me
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if (isset($_COOKIE[$session_name . '_remember'])) {
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self::create_remember_cookie();
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}
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// Set up the cookie params before we start the session.
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// This is vital
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session_set_cookie_params(
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Config::get('cookie_life'),
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Config::get('cookie_path'),
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Config::get('cookie_domain'),
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Config::get('cookie_secure'));
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// Set name
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session_name($session_name);
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// Ungimp IE and go
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self::ungimp_ie();
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session_start();
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return true;
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} // check_session
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/**
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* session_exists
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* This checks to see if the specified session of the specified type
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* exists, it also provides an array of key'd data that may be required
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* based on the type
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*/
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public static function session_exists($type, $key, $data=array()) {
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// Switch on the type they pass
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switch ($type) {
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case 'xml-rpc':
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case 'api':
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$key = Dba::escape($key);
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$time = time();
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$sql = "SELECT * FROM `session` WHERE " .
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"`id`='$key' AND `expire` > '$time' " .
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"AND `type`='$type'";
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$db_results = Dba::read($sql);
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if (Dba::num_rows($db_results)) {
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return true;
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}
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break;
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case 'interface':
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$key = Dba::escape($key);
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$time = time();
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// Build a list of enabled authentication types
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$types = Config::get('auth_methods');
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if (!Config::get('use_auth')) {
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$types[] = '';
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}
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$enabled_types = implode("','", $types);
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$sql = "SELECT * FROM `session` WHERE " .
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"`id`='$key' AND `expire` > '$time' " .
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"AND `type` IN('$enabled_types')";
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$db_results = Dba::read($sql);
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if (Dba::num_rows($db_results)) {
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return true;
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}
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break;
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case 'stream':
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$key = Dba::escape($key);
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$ip = Dba::escape(inet_pton($data['ip']));
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$agent = Dba::escape($data['agent']);
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$sql = "SELECT * FROM `session_stream` WHERE " .
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"`id`='$key' AND `expire` > '$time' " .
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"AND `ip`='$ip' AND `agent`='$agent'";
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$db_results = Dba::read($sql);
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if (Dba::num_rows($db_results)) {
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return true;
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}
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break;
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default:
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return false;
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break;
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} // type
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// Default to false
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return false;
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} // session_exists
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/**
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* session_extend
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* This should really be extend_session but hey you gotta go with the
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* flow.
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* This takes a SID and extends its expiration.
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*/
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public static function session_extend($sid) {
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$time = time();
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$sid = Dba::escape($sid);
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$expire = isset($_COOKIE[Config::get('session_name') . '_remember'])
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? $time + Config::get('remember_length')
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: $time + Config::get('session_length');
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$sql = "UPDATE `session` SET `expire`='$expire' WHERE `id`='$sid'";
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$db_results = Dba::write($sql);
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debug_event('SESSION', $sid . ' has been extended to ' . date('r', $expire) . ' extension length ' . ($expire - $time), 5);
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return $db_results;
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} // session_extend
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/**
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* _auto_init
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* This function is called when the object is included, this sets up the
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* session_save_handler
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*/
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public static function _auto_init() {
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if (!function_exists('session_start')) {
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header("Location:" . Config::get('web_path') . "/test.php");
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exit;
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}
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session_set_save_handler(
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array('vauth', 'open'),
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array('vauth', 'close'),
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array('vauth', 'read'),
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array('vauth', 'write'),
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array('vauth', 'destroy'),
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array('vauth', 'gc'));
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} // auto init
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/**
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* ungimp_ie
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* This function sets the cache limiting to public if you are running
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* some flavor of IE. The detection used here is very conservative so
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* feel free to fix it. This only has to be done if we're rolling HTTPS.
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*/
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public static function ungimp_ie() {
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// If no https, no ungimpage required
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if (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'on') {
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return true;
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}
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// Try to detect IE
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$agent = trim($_SERVER['HTTP_USER_AGENT']);
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if ((strpos($agent, 'MSIE') !== false) ||
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(strpos($agent,'Internet Explorer/') !== false)) {
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session_cache_limiter('public');
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}
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return true;
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} // ungimp_ie
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/**
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* authenticate
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* This takes a username and password and then returns the results
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* based on what happens when we try to do the auth.
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*/
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public static function authenticate($username, $password) {
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// Foreach the auth methods
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foreach (Config::get('auth_methods') as $method) {
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// Build the function name and call it
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$function_name = $method . '_auth';
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if (!method_exists('vauth', $function_name)) {
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continue;
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}
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$results = self::$function_name($username, $password);
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// If we achieve victory return
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if ($results['success']) { break; }
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} // end foreach
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return $results;
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} // authenticate
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|
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/**
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* mysql_auth
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*
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* This is the core function of our built-in authentication.
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*/
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private static function mysql_auth($username, $password) {
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$username = Dba::escape($username);
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if (strlen($password) && strlen($username)) {
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$sql = "SELECT `password` FROM `user` WHERE " .
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"`username`='$username'";
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$db_results = Dba::read($sql);
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if ($row = Dba::fetch_assoc($db_results)) {
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// Use SHA2 now... cooking with fire.
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// For backwards compatibility, we hash a couple
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// of different variations of the password.
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// Increases collision chances, but doesn't
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// break things.
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$hashed_password[] = hash('sha256', $password);
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$hashed_password[] = hash('sha256',
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Dba::escape(scrub_in($password)));
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// Automagically update the password if it's
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// old and busted.
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if($row['password'] == $hashed_password[1] &&
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$hashed_password[0] != $hashed_password[1]) {
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$user = User::get_from_username($username);
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$user->update_password($password);
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}
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if(in_array($row['password'], $hashed_password)) {
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$results['success'] = true;
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$results['type'] = 'mysql';
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$results['username'] = $username;
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return $results;
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}
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}
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}
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// Default to failure
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$results['success'] = false;
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$results['error'] = 'MySQL login attempt failed';
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return $results;
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} // mysql_auth
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|
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/**
|
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* local_auth
|
|
* Check to make sure the pam_auth function is implemented (module is
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* installed), then check the credentials.
|
|
*/
|
|
private static function local_auth($username, $password) {
|
|
if (!function_exists('pam_auth')) {
|
|
$results['success'] = false;
|
|
$results['error'] = 'The PAM PHP module is not installed';
|
|
return $results;
|
|
}
|
|
|
|
$password = scrub_in($password);
|
|
|
|
if (pam_auth($username, $password)) {
|
|
$results['success'] = true;
|
|
$results['type'] = 'local';
|
|
$results['username'] = $username;
|
|
}
|
|
else {
|
|
$results['success'] = false;
|
|
$results['error'] = 'PAM login attempt failed';
|
|
}
|
|
|
|
return $results;
|
|
} // local_auth
|
|
|
|
/**
|
|
* ldap_auth
|
|
* Step one, connect to the LDAP server and perform a search for the
|
|
* username provided.
|
|
* Step two, attempt to bind using that username and the password
|
|
* provided.
|
|
* Step three, figure out if they are authorized to use ampache:
|
|
* TODO: in config but unimplemented:
|
|
* * require-dn "Grant access if the DN in the directive matches
|
|
* the DN fetched from the LDAP directory"
|
|
* * require-attribute "an attribute fetched from the LDAP
|
|
* directory matches the given value"
|
|
*/
|
|
private static function ldap_auth($username, $password) {
|
|
|
|
$ldap_username = Config::get('ldap_username');
|
|
$ldap_password = Config::get('ldap_password');
|
|
|
|
$require_group = Config::get('ldap_require_group');
|
|
|
|
// This is the DN for the users (required)
|
|
$ldap_dn = Config::get('ldap_search_dn');
|
|
|
|
// This is the server url (required)
|
|
$ldap_url = Config::get('ldap_url');
|
|
|
|
// This is the ldap filter string (required)
|
|
$ldap_filter = Config::get('ldap_filter');
|
|
|
|
//This is the ldap objectclass (required)
|
|
$ldap_class = Config::get('ldap_objectclass');
|
|
|
|
if (!($ldap_dn && $ldap_url && $ldap_filter && $ldap_class)) {
|
|
debug_event('ldap_auth', 'Required config value missing', 1);
|
|
$results['success'] = false;
|
|
$results['error'] = 'Incomplete LDAP config';
|
|
return $results;
|
|
}
|
|
|
|
$ldap_name_field = Config::get('ldap_name_field');
|
|
$ldap_email_field = Config::get('ldap_email_field');
|
|
|
|
if ($ldap_link = ldap_connect($ldap_url) ) {
|
|
|
|
/* Set to Protocol 3 */
|
|
ldap_set_option($ldap_link, LDAP_OPT_PROTOCOL_VERSION, 3);
|
|
|
|
// bind using our auth if we need to for initial search
|
|
if (!ldap_bind($ldap_link, $ldap_username, $ldap_password)) {
|
|
$results['success'] = false;
|
|
$results['error'] = 'Could not bind to LDAP server.';
|
|
return $results;
|
|
} // If bind fails
|
|
|
|
$sr = ldap_search($ldap_link, $ldap_dn, "(&(objectclass=$ldap_class)($ldap_filter=$username))");
|
|
$info = ldap_get_entries($ldap_link, $sr);
|
|
|
|
if ($info["count"] == 1) {
|
|
$user_entry = ldap_first_entry($ldap_link, $sr);
|
|
$user_dn = ldap_get_dn($ldap_link, $user_entry);
|
|
$password = scrub_in($password);
|
|
// bind using the user..
|
|
$retval = ldap_bind($ldap_link, $user_dn, $password);
|
|
|
|
if ($retval) {
|
|
// When the current user needs to be in
|
|
// a specific group to access Ampache,
|
|
// check whether the 'member' list of
|
|
// the group contains the DN
|
|
if ($require_group) {
|
|
$group_result = ldap_read($ldap_link, $require_group, 'objectclass=*', array('member'));
|
|
if (!$group_result) {
|
|
debug_event('ldap_auth', "Failure reading $require_group", 1);
|
|
$results['success'] = false;
|
|
$results['error'] = 'The LDAP group could not be read';
|
|
return $results;
|
|
}
|
|
|
|
$group_info = ldap_get_entries($ldap_link, $group_result);
|
|
|
|
if ($group_info['count'] < 1) {
|
|
debug_event('ldap_auth', "No members found in $require_group", 1);
|
|
$results['success'] = false;
|
|
$results['error'] = 'Empty LDAP group';
|
|
return $results;
|
|
}
|
|
|
|
$group_match = preg_grep("/^$user_dn\$/i", $group_info[0]['member']);
|
|
if (!$group_match) {
|
|
debug_event('ldap_auth', "$user_dn is not a member of $require_group",1);
|
|
$results['success'] = false;
|
|
$results['error'] = 'LDAP login attempt failed';
|
|
return $results;
|
|
}
|
|
}
|
|
ldap_close($ldap_link);
|
|
$results['success'] = true;
|
|
$results['type'] = "ldap";
|
|
$results['username'] = $username;
|
|
$results['name'] = $info[0][$ldap_name_field][0];
|
|
$results['email'] = $info[0][$ldap_email_field][0];
|
|
|
|
return $results;
|
|
|
|
} // if we get something good back
|
|
|
|
} // if something was sent back
|
|
|
|
} // if failed connect
|
|
|
|
/* Default to bad news */
|
|
$results['success'] = false;
|
|
$results['error'] = 'LDAP login attempt failed';
|
|
|
|
return $results;
|
|
|
|
} // ldap_auth
|
|
|
|
/**
|
|
* http_auth
|
|
* This auth method relies on HTTP auth from the webserver
|
|
*/
|
|
private static function http_auth($username, $password) {
|
|
if (($_SERVER['REMOTE_USER'] == $username) ||
|
|
($_SERVER['HTTP_REMOTE_USER'] == $username)) {
|
|
$results['success'] = true;
|
|
$results['type'] = 'http';
|
|
$results['username'] = $username;
|
|
$results['name'] = $username;
|
|
$results['email'] = '';
|
|
}
|
|
else {
|
|
$results['success'] = false;
|
|
$results['error'] = 'HTTP auth login attempt failed';
|
|
}
|
|
return $results;
|
|
} // http_auth
|
|
|
|
} // end of vauth class
|
|
|
|
?>
|