forked from extern/egroupware
818 lines
17 KiB
PHP
818 lines
17 KiB
PHP
<?php
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/*
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V4.01 23 Oct 2003 (c) 2000-2004 John Lim (jlim@natsoft.com.my). All rights reserved.
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Contributed by Ross Smith (adodb@netebb.com).
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Released under both BSD license and Lesser GPL library license.
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Whenever there is any discrepancy between the two licenses,
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the BSD license will take precedence.
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Set tabs to 4 for best viewing.
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*/
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/*
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You may want to rename the 'data' field to 'session_data' as
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'data' appears to be a reserved word for one or more of the following:
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ANSI SQL
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IBM DB2
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MS SQL Server
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Postgres
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SAP
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If you do, then execute:
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ADODB_Session::dataFieldName('session_data');
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*/
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if (!defined('_ADODB_LAYER')) {
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require_once realpath(dirname(__FILE__) . '/../adodb.inc.php');
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}
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if (defined('ADODB_SESSION')) return 1;
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define('ADODB_SESSION', dirname(__FILE__));
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/*!
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\static
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*/
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class ADODB_Session {
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/////////////////////
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// getter/setter methods
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/////////////////////
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/*!
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*/
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function driver($driver = null) {
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static $_driver = 'mysql';
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static $set = false;
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if (!is_null($driver)) {
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$_driver = trim($driver);
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$set = true;
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} elseif (!$set) {
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// backwards compatibility
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if (isset($GLOBALS['ADODB_SESSION_DRIVER'])) {
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return $GLOBALS['ADODB_SESSION_DRIVER'];
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}
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}
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return $_driver;
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}
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/*!
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*/
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function host($host = null) {
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static $_host = 'localhost';
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static $set = false;
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if (!is_null($host)) {
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$_host = trim($host);
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$set = true;
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} elseif (!$set) {
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// backwards compatibility
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if (isset($GLOBALS['ADODB_SESSION_CONNECT'])) {
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return $GLOBALS['ADODB_SESSION_CONNECT'];
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}
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}
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return $_host;
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}
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/*!
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*/
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function user($user = null) {
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static $_user = 'root';
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static $set = false;
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if (!is_null($user)) {
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$_user = trim($user);
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$set = true;
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} elseif (!$set) {
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// backwards compatibility
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if (isset($GLOBALS['ADODB_SESSION_USER'])) {
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return $GLOBALS['ADODB_SESSION_USER'];
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}
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}
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return $_user;
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}
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/*!
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*/
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function password($password = null) {
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static $_password = '';
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static $set = false;
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if (!is_null($password)) {
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$_password = $password;
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$set = true;
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} elseif (!$set) {
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// backwards compatibility
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if (isset($GLOBALS['ADODB_SESSION_PWD'])) {
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return $GLOBALS['ADODB_SESSION_PWD'];
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}
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}
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return $_password;
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}
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/*!
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*/
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function database($database = null) {
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static $_database = 'xphplens_2';
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static $set = false;
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if (!is_null($database)) {
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$_database = trim($database);
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$set = true;
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} elseif (!$set) {
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// backwards compatibility
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if (isset($GLOBALS['ADODB_SESSION_DB'])) {
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return $GLOBALS['ADODB_SESSION_DB'];
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}
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}
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return $_database;
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}
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/*!
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*/
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function persist($persist = null) {
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static $_persist = true;
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if (!is_null($persist)) {
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$_persist = trim($persist);
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}
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return $_persist;
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}
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/*!
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*/
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function lifetime($lifetime = null) {
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static $_lifetime;
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static $set = false;
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if (!is_null($lifetime)) {
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$_lifetime = (int) $lifetime;
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$set = true;
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} elseif (!$set) {
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// backwards compatibility
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if (isset($GLOBALS['ADODB_SESS_LIFE'])) {
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return $GLOBALS['ADODB_SESS_LIFE'];
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}
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}
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if (!$_lifetime) {
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$_lifetime = ini_get('session.gc_maxlifetime');
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if ($_lifetime <= 1) {
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// bug in PHP 4.0.3 pl 1 -- how about other versions?
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//print "<h3>Session Error: PHP.INI setting <i>session.gc_maxlifetime</i>not set: $lifetime</h3>";
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$_lifetime = 1440;
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}
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}
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return $_lifetime;
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}
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/*!
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*/
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function debug($debug = null) {
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static $_debug = false;
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static $set = false;
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if (!is_null($debug)) {
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$_debug = (bool) $debug;
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$conn = ADODB_Session::_conn();
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if ($conn) {
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$conn->debug = $_debug;
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}
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$set = true;
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} elseif (!$set) {
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// backwards compatibility
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if (isset($GLOBALS['ADODB_SESS_DEBUG'])) {
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return $GLOBALS['ADODB_SESS_DEBUG'];
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}
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}
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return $_debug;
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}
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/*!
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*/
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function expireNotify($expire_notify = null) {
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static $_expire_notify;
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static $set = false;
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if (!is_null($expire_notify)) {
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$_expire_notify = $expire_notify;
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$set = true;
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} elseif (!$set) {
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// backwards compatibility
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if (isset($GLOBALS['ADODB_SESSION_EXPIRE_NOTIFY'])) {
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return $GLOBALS['ADODB_SESSION_EXPIRE_NOTIFY'];
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}
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}
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return $_expire_notify;
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}
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/*!
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*/
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function table($table = null) {
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static $_table = 'sessions';
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static $set = false;
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if (!is_null($table)) {
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$_table = trim($table);
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$set = true;
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} elseif (!$set) {
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// backwards compatibility
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if (isset($GLOBALS['ADODB_SESSION_TBL'])) {
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return $GLOBALS['ADODB_SESSION_TBL'];
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}
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}
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return $_table;
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}
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/*!
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*/
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function optimize($optimize = null) {
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static $_optimize = false;
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static $set = false;
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if (!is_null($optimize)) {
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$_optimize = (bool) $optimize;
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$set = true;
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} elseif (!$set) {
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// backwards compatibility
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if (defined('ADODB_SESSION_OPTIMIZE')) {
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return true;
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}
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}
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return $_optimize;
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}
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/*!
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*/
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function syncSeconds($sync_seconds = null) {
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static $_sync_seconds = 60;
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static $set = false;
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if (!is_null($sync_seconds)) {
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$_sync_seconds = (int) $sync_seconds;
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$set = true;
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} elseif (!$set) {
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// backwards compatibility
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if (defined('ADODB_SESSION_SYNCH_SECS')) {
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return ADODB_SESSION_SYNCH_SECS;
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}
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}
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return $_sync_seconds;
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}
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/*!
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*/
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function clob($clob = null) {
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static $_clob = false;
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static $set = false;
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if (!is_null($clob)) {
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$_clob = strtolower(trim($clob));
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$set = true;
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} elseif (!$set) {
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// backwards compatibility
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if (isset($GLOBALS['ADODB_SESSION_USE_LOBS'])) {
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return $GLOBALS['ADODB_SESSION_USE_LOBS'];
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}
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}
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return $_clob;
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}
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/*!
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*/
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function dataFieldName($data_field_name = null) {
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static $_data_field_name = 'data';
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if (!is_null($data_field_name)) {
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$_data_field_name = trim($data_field_name);
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}
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return $_data_field_name;
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}
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/*!
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*/
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function filter($filter = null) {
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static $_filter = array();
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if (!is_null($filter)) {
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if (!is_array($filter)) {
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$filter = array($filter);
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}
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$_filter = $filter;
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}
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return $_filter;
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}
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/*!
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*/
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function encryptionKey($encryption_key = null) {
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static $_encryption_key = 'CRYPTED ADODB SESSIONS ROCK!';
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if (!is_null($encryption_key)) {
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$_encryption_key = $encryption_key;
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}
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return $_encryption_key;
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}
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/////////////////////
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// private methods
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/////////////////////
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/*!
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*/
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function &_conn($conn=null) {
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return $GLOBALS['ADODB_SESS_CONN'];
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}
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/*!
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*/
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function _crc($crc = null) {
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static $_crc = false;
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if (!is_null($crc)) {
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$_crc = $crc;
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}
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return $_crc;
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}
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/*!
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*/
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function _init() {
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session_module_name('user');
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session_set_save_handler(
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array('ADODB_Session', 'open'),
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array('ADODB_Session', 'close'),
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array('ADODB_Session', 'read'),
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array('ADODB_Session', 'write'),
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array('ADODB_Session', 'destroy'),
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array('ADODB_Session', 'gc')
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);
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}
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/*!
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*/
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function _sessionKey() {
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// use this function to create the encryption key for crypted sessions
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// crypt the used key, ADODB_Session::encryptionKey() as key and session_id() as salt
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return crypt(ADODB_Session::encryptionKey(), session_id());
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}
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/*!
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*/
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function _dumprs($rs) {
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$conn =& ADODB_Session::_conn();
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$debug = ADODB_Session::debug();
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if (!$conn) {
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return;
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}
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if (!$debug) {
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return;
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}
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if (!$rs) {
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echo "<br />\$rs is null or false<br />\n";
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return;
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}
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//echo "<br />\nAffected_Rows=",$conn->Affected_Rows(),"<br />\n";
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if (!is_object($rs)) {
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return;
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}
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require_once ADODB_SESSION.'/../tohtml.inc.php';
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rs2html($rs);
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}
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/////////////////////
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// public methods
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/////////////////////
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/*!
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Create the connection to the database.
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If $conn already exists, reuse that connection
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*/
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function open($save_path, $session_name, $persist = null) {
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$conn =& ADODB_Session::_conn();
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if ($conn) {
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return true;
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}
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$database = ADODB_Session::database();
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$debug = ADODB_Session::debug();
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$driver = ADODB_Session::driver();
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$host = ADODB_Session::host();
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$password = ADODB_Session::password();
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$user = ADODB_Session::user();
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if (!is_null($persist)) {
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$persist = (bool) $persist;
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ADODB_Session::persist($persist);
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} else {
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$persist = ADODB_Session::persist();
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}
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# these can all be defaulted to in php.ini
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# assert('$database');
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# assert('$driver');
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# assert('$host');
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// cannot use =& below - do not know why...
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$conn = ADONewConnection($driver);
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if ($debug) {
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$conn->debug = true;
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// ADOConnection::outp( " driver=$driver user=$user pwd=$password db=$database ");
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}
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if ($persist) {
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$ok = $conn->PConnect($host, $user, $password, $database);
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} else {
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$ok = $conn->Connect($host, $user, $password, $database);
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}
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if ($ok) $GLOBALS['ADODB_SESS_CONN'] =& $conn;
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else
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ADOConnection::outp('<p>Session: connection failed</p>', false);
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return $ok;
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}
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/*!
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Close the connection
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*/
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function close() {
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$conn =& ADODB_Session::_conn();
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if ($conn) {
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$conn->Close();
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}
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return true;
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}
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/*
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Slurp in the session variables and return the serialized string
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*/
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function read($key) {
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$conn =& ADODB_Session::_conn();
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$data = ADODB_Session::dataFieldName();
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$filter = ADODB_Session::filter();
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$table = ADODB_Session::table();
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if (!$conn) {
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return '';
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}
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assert('$table');
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$qkey = $conn->quote($key);
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$binary = $conn->dataProvider === 'mysql' ? '/*! BINARY */' : '';
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$sql = "SELECT $data FROM $table WHERE $binary sesskey = $qkey AND expiry >= " . time();
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$rs =& $conn->Execute($sql);
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//ADODB_Session::_dumprs($rs);
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if ($rs) {
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if ($rs->EOF) {
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$v = '';
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} else {
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$v = reset($rs->fields);
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$filter = array_reverse($filter);
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foreach ($filter as $f) {
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if (is_object($f)) {
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$v = $f->read($v, ADODB_Session::_sessionKey());
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}
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}
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$v = rawurldecode($v);
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}
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$rs->Close();
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ADODB_Session::_crc(strlen($v) . crc32($v));
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return $v;
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}
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return '';
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}
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/*!
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Write the serialized data to a database.
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If the data has not been modified since the last read(), we do not write.
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*/
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function write($key, $val) {
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$clob = ADODB_Session::clob();
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$conn =& ADODB_Session::_conn();
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$crc = ADODB_Session::_crc();
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$data = ADODB_Session::dataFieldName();
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$debug = ADODB_Session::debug();
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$driver = ADODB_Session::driver();
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$expire_notify = ADODB_Session::expireNotify();
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$filter = ADODB_Session::filter();
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$lifetime = ADODB_Session::lifetime();
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$table = ADODB_Session::table();
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if (!$conn) {
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return false;
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}
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assert('$table');
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$expiry = time() + $lifetime;
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$qkey = $conn->quote($key);
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$binary = $conn->dataProvider === 'mysql' ? '/*! BINARY */' : '';
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// crc32 optimization since adodb 2.1
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// now we only update expiry date, thx to sebastian thom in adodb 2.32
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if ($crc !== false && $crc == (strlen($val) . crc32($val))) {
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if ($debug) {
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echo '<p>Session: Only updating date - crc32 not changed</p>';
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}
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$sql = "UPDATE $table SET expiry = $expiry WHERE $binary sesskey = $qkey AND expiry >= " . time();
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$rs =& $conn->Execute($sql);
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ADODB_Session::_dumprs($rs);
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if ($rs) {
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$rs->Close();
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}
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return true;
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}
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$val = rawurlencode($val);
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foreach ($filter as $f) {
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if (is_object($f)) {
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$val = $f->write($val, ADODB_Session::_sessionKey());
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}
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}
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$arr = array('sesskey' => $key, 'expiry' => $expiry, $data => $val, 'expireref' => '');
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if ($expire_notify) {
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$var = reset($expire_notify);
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global $$var;
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if (isset($$var)) {
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$arr['expireref'] = $$var;
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}
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}
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if (!$clob) { // no lobs, simply use replace()
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$arr[$data] = $conn->qstr($val);
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$rs = $conn->Replace($table, $arr, 'sesskey', $autoQuote = true);
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ADODB_Session::_dumprs($rs);
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} else {
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// what value shall we insert/update for lob row?
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switch ($driver) {
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// empty_clob or empty_lob for oracle dbs
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case 'oracle':
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case 'oci8':
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case 'oci8po':
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case 'oci805':
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$lob_value = sprintf('empty_%s()', strtolower($clob));
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break;
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// null for all other
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default:
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$lob_value = 'null';
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break;
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}
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// do we insert or update? => as for sesskey
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$rs =& $conn->Execute("SELECT COUNT(*) AS cnt FROM $table WHERE $binary sesskey = $qkey");
|
|
ADODB_Session::_dumprs($rs);
|
|
if ($rs && reset($rs->fields) > 0) {
|
|
$sql = "UPDATE $table SET expiry = $expiry, $data = $lob_value WHERE sesskey = $qkey";
|
|
} else {
|
|
$sql = "INSERT INTO $table (expiry, $data, sesskey) VALUES ($expiry, $lob_value, $qkey)";
|
|
}
|
|
if ($rs) {
|
|
$rs->Close();
|
|
}
|
|
|
|
$err = '';
|
|
$rs1 =& $conn->Execute($sql);
|
|
ADODB_Session::_dumprs($rs1);
|
|
if (!$rs1) {
|
|
$err = $conn->ErrorMsg()."\n";
|
|
}
|
|
$rs2 =& $conn->UpdateBlob($table, $data, $val, " sesskey=$qkey", strtoupper($clob));
|
|
ADODB_Session::_dumprs($rs2);
|
|
if (!$rs2) {
|
|
$err .= $conn->ErrorMsg()."\n";
|
|
}
|
|
$rs = ($rs && $rs2) ? true : false;
|
|
if ($rs1) {
|
|
$rs1->Close();
|
|
}
|
|
if (is_object($rs2)) {
|
|
$rs2->Close();
|
|
}
|
|
}
|
|
|
|
if (!$rs) {
|
|
ADOConnection::outp('<p>Session Replace: ' . $conn->ErrorMsg() . '</p>', false);
|
|
return false;
|
|
} else {
|
|
// bug in access driver (could be odbc?) means that info is not committed
|
|
// properly unless select statement executed in Win2000
|
|
if ($conn->databaseType == 'access') {
|
|
$sql = "SELECT sesskey FROM $table WHERE $binary sesskey = $qkey";
|
|
$rs =& $conn->Execute($sql);
|
|
ADODB_Session::_dumprs($rs);
|
|
if ($rs) {
|
|
$rs->Close();
|
|
}
|
|
}
|
|
}
|
|
return $rs ? true : false;
|
|
}
|
|
|
|
/*!
|
|
*/
|
|
function destroy($key) {
|
|
$conn =& ADODB_Session::_conn();
|
|
$table = ADODB_Session::table();
|
|
$expire_notify = ADODB_Session::expireNotify();
|
|
|
|
if (!$conn) {
|
|
return false;
|
|
}
|
|
|
|
assert('$table');
|
|
|
|
$qkey = $conn->quote($key);
|
|
$binary = $conn->dataProvider === 'mysql' ? '/*! BINARY */' : '';
|
|
|
|
if ($expire_notify) {
|
|
reset($expire_notify);
|
|
$fn = next($expire_notify);
|
|
$savem = $conn->SetFetchMode(ADODB_FETCH_NUM);
|
|
$sql = "SELECT expireref, sesskey FROM $table WHERE $binary sesskey = $qkey";
|
|
$rs =& $conn->Execute($sql);
|
|
ADODB_Session::_dumprs($rs);
|
|
$conn->SetFetchMode($savem);
|
|
if (!$rs) {
|
|
return false;
|
|
}
|
|
if (!$rs->EOF) {
|
|
$ref = $rs->fields[0];
|
|
$key = $rs->fields[1];
|
|
//assert('$ref');
|
|
//assert('$key');
|
|
$fn($ref, $key);
|
|
}
|
|
$rs->Close();
|
|
}
|
|
|
|
$sql = "DELETE FROM $table WHERE $binary sesskey = $qkey";
|
|
$rs =& $conn->Execute($sql);
|
|
ADODB_Session::_dumprs($rs);
|
|
if ($rs) {
|
|
$rs->Close();
|
|
}
|
|
|
|
return $rs ? true : false;
|
|
}
|
|
|
|
/*!
|
|
*/
|
|
function gc($maxlifetime) {
|
|
$conn =& ADODB_Session::_conn();
|
|
$debug = ADODB_Session::debug();
|
|
$expire_notify = ADODB_Session::expireNotify();
|
|
$optimize = ADODB_Session::optimize();
|
|
$sync_seconds = ADODB_Session::syncSeconds();
|
|
$table = ADODB_Session::table();
|
|
|
|
if (!$conn) {
|
|
return false;
|
|
}
|
|
|
|
assert('$table');
|
|
|
|
$time = time();
|
|
|
|
$binary = $conn->dataProvider === 'mysql' ? '/*! BINARY */' : '';
|
|
|
|
if ($expire_notify) {
|
|
reset($expire_notify);
|
|
$fn = next($expire_notify);
|
|
$savem = $conn->SetFetchMode(ADODB_FETCH_NUM);
|
|
$sql = "SELECT expireref, sesskey FROM $table WHERE expiry < $time";
|
|
$rs =& $conn->Execute($sql);
|
|
ADODB_Session::_dumprs($rs);
|
|
$conn->SetFetchMode($savem);
|
|
if ($rs) {
|
|
$conn->BeginTrans();
|
|
$keys = array();
|
|
while (!$rs->EOF) {
|
|
$ref = $rs->fields[0];
|
|
$key = $rs->fields[1];
|
|
$fn($ref, $key);
|
|
$del = $conn->Execute("DELETE FROM $table WHERE sesskey='$key'");
|
|
$rs->MoveNext();
|
|
}
|
|
$rs->Close();
|
|
|
|
$conn->CommitTrans();
|
|
}
|
|
} else {
|
|
$sql = "DELETE FROM $table WHERE expiry < $time";
|
|
$rs =& $conn->Execute($sql);
|
|
ADODB_Session::_dumprs($rs);
|
|
if ($rs) {
|
|
$rs->Close();
|
|
}
|
|
if ($debug) {
|
|
ADOConnection::outp("<p><b>Garbage Collection</b>: $sql</p>");
|
|
}
|
|
}
|
|
|
|
// suggested by Cameron, "GaM3R" <gamr@outworld.cx>
|
|
if ($optimize) {
|
|
$driver = ADODB_Session::driver();
|
|
|
|
if (preg_match('/mysql/i', $driver)) {
|
|
$sql = "OPTIMIZE TABLE $table";
|
|
}
|
|
if (preg_match('/postgres/i', $driver)) {
|
|
$sql = "VACUUM $table";
|
|
}
|
|
if (!empty($sql)) {
|
|
$conn->Execute($sql);
|
|
}
|
|
}
|
|
|
|
if ($sync_seconds) {
|
|
$sql = 'SELECT ';
|
|
if ($conn->dataProvider === 'oci8') {
|
|
$sql .= "TO_CHAR({$conn->sysTimeStamp}, 'RRRR-MM-DD HH24:MI:SS')";
|
|
} else {
|
|
$sql .= $conn->sysTimeStamp;
|
|
}
|
|
$sql .= " FROM $table";
|
|
|
|
$rs =& $conn->SelectLimit($sql, 1);
|
|
if ($rs && !$rs->EOF) {
|
|
$dbts = reset($rs->fields);
|
|
$rs->Close();
|
|
$dbt = $conn->UnixTimeStamp($dbts);
|
|
$t = time();
|
|
|
|
if (abs($dbt - $t) >= $sync_seconds) {
|
|
global $HTTP_SERVER_VARS;
|
|
$msg = __FILE__ .
|
|
": Server time for webserver {$HTTP_SERVER_VARS['HTTP_HOST']} not in synch with database: " .
|
|
" database=$dbt ($dbts), webserver=$t (diff=". (abs($dbt - $t) / 3600) . ' hours)';
|
|
error_log($msg);
|
|
if ($debug) {
|
|
ADOConnection::outp("<p>$msg</p>");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
}
|
|
|
|
ADODB_Session::_init();
|
|
|
|
|
|
// for backwards compatability only
|
|
function adodb_sess_open($save_path, $session_name, $persist = true) {
|
|
return ADODB_Session::open($save_path, $session_name, $persist);
|
|
}
|
|
|
|
// for backwards compatability only
|
|
function adodb_sess_gc($t)
|
|
{
|
|
return ADODB_Session::gc($t);
|
|
}
|
|
|
|
?>
|