mirror of
https://github.com/EGroupware/egroupware.git
synced 2024-12-16 19:50:44 +01:00
440 lines
14 KiB
PHP
440 lines
14 KiB
PHP
<?php
|
|
/*
|
|
V3.92 2 Oct 2003 (c) 2000-2003 John Lim (jlim@natsoft.com.my). All rights reserved.
|
|
Released under both BSD license and Lesser GPL library license.
|
|
Whenever there is any discrepancy between the two licenses,
|
|
the BSD license will take precedence.
|
|
Set tabs to 4 for best viewing.
|
|
|
|
Latest version of ADODB is available at http://php.weblogs.com/adodb
|
|
======================================================================
|
|
|
|
This file provides PHP4 session management using the ADODB database
|
|
wrapper library, using Oracle CLOB's to store data. Contributed by achim.gosse@ddd.de.
|
|
|
|
Example
|
|
=======
|
|
|
|
GLOBAL $HTTP_SESSION_VARS;
|
|
include('adodb.inc.php');
|
|
include('adodb-session.php');
|
|
session_start();
|
|
session_register('AVAR');
|
|
$HTTP_SESSION_VARS['AVAR'] += 1;
|
|
print "<p>\$HTTP_SESSION_VARS['AVAR']={$HTTP_SESSION_VARS['AVAR']}</p>";
|
|
|
|
To force non-persistent connections, call adodb_session_open first before session_start():
|
|
|
|
GLOBAL $HTTP_SESSION_VARS;
|
|
include('adodb.inc.php');
|
|
include('adodb-session.php');
|
|
adodb_session_open(false,false,false);
|
|
session_start();
|
|
session_register('AVAR');
|
|
$HTTP_SESSION_VARS['AVAR'] += 1;
|
|
print "<p>\$HTTP_SESSION_VARS['AVAR']={$HTTP_SESSION_VARS['AVAR']}</p>";
|
|
|
|
|
|
Installation
|
|
============
|
|
1. Create this table in your database (syntax might vary depending on your db):
|
|
|
|
create table sessions (
|
|
SESSKEY char(32) not null,
|
|
EXPIRY int(11) unsigned not null,
|
|
EXPIREREF varchar(64),
|
|
DATA CLOB,
|
|
primary key (sesskey)
|
|
);
|
|
|
|
|
|
2. Then define the following parameters in this file:
|
|
$ADODB_SESSION_DRIVER='database driver, eg. mysql or ibase';
|
|
$ADODB_SESSION_CONNECT='server to connect to';
|
|
$ADODB_SESSION_USER ='user';
|
|
$ADODB_SESSION_PWD ='password';
|
|
$ADODB_SESSION_DB ='database';
|
|
$ADODB_SESSION_TBL = 'sessions'
|
|
$ADODB_SESSION_USE_LOBS = false; (or, if you wanna use CLOBS (= 'CLOB') or ( = 'BLOB')
|
|
|
|
3. Recommended is PHP 4.0.6 or later. There are documented
|
|
session bugs in earlier versions of PHP.
|
|
|
|
4. If you want to receive notifications when a session expires, then
|
|
you can tag a session with an EXPIREREF, and before the session
|
|
record is deleted, we can call a function that will pass the EXPIREREF
|
|
as the first parameter, and the session key as the second parameter.
|
|
|
|
To do this, define a notification function, say NotifyFn:
|
|
|
|
function NotifyFn($expireref, $sesskey)
|
|
{
|
|
}
|
|
|
|
Then you need to define a global variable $ADODB_SESSION_EXPIRE_NOTIFY.
|
|
This is an array with 2 elements, the first being the name of the variable
|
|
you would like to store in the EXPIREREF field, and the 2nd is the
|
|
notification function's name.
|
|
|
|
In this example, we want to be notified when a user's session
|
|
has expired, so we store the user id in the global variable $USERID,
|
|
store this value in the EXPIREREF field:
|
|
|
|
$ADODB_SESSION_EXPIRE_NOTIFY = array('USERID','NotifyFn');
|
|
|
|
Then when the NotifyFn is called, we are passed the $USERID as the first
|
|
parameter, eg. NotifyFn($userid, $sesskey).
|
|
*/
|
|
|
|
if (!defined('_ADODB_LAYER')) {
|
|
include (dirname(__FILE__).'/adodb.inc.php');
|
|
}
|
|
|
|
if (!defined('ADODB_SESSION')) {
|
|
|
|
define('ADODB_SESSION',1);
|
|
|
|
/* if database time and system time is difference is greater than this, then give warning */
|
|
define('ADODB_SESSION_SYNCH_SECS',60);
|
|
|
|
/****************************************************************************************\
|
|
Global definitions
|
|
\****************************************************************************************/
|
|
GLOBAL $ADODB_SESSION_CONNECT,
|
|
$ADODB_SESSION_DRIVER,
|
|
$ADODB_SESSION_USER,
|
|
$ADODB_SESSION_PWD,
|
|
$ADODB_SESSION_DB,
|
|
$ADODB_SESS_CONN,
|
|
$ADODB_SESS_LIFE,
|
|
$ADODB_SESS_DEBUG,
|
|
$ADODB_SESSION_EXPIRE_NOTIFY,
|
|
$ADODB_SESSION_CRC,
|
|
$ADODB_SESSION_USE_LOBS;
|
|
|
|
if (!isset($ADODB_SESSION_USE_LOBS)) $ADODB_SESSION_USE_LOBS = 'CLOB';
|
|
|
|
$ADODB_SESS_LIFE = ini_get('session.gc_maxlifetime');
|
|
if ($ADODB_SESS_LIFE <= 1) {
|
|
// bug in PHP 4.0.3 pl 1 -- how about other versions?
|
|
//print "<h3>Session Error: PHP.INI setting <i>session.gc_maxlifetime</i>not set: $ADODB_SESS_LIFE</h3>";
|
|
$ADODB_SESS_LIFE=1440;
|
|
}
|
|
$ADODB_SESSION_CRC = false;
|
|
//$ADODB_SESS_DEBUG = true;
|
|
|
|
//////////////////////////////////
|
|
/* SET THE FOLLOWING PARAMETERS */
|
|
//////////////////////////////////
|
|
|
|
if (empty($ADODB_SESSION_DRIVER)) {
|
|
$ADODB_SESSION_DRIVER='mysql';
|
|
$ADODB_SESSION_CONNECT='localhost';
|
|
$ADODB_SESSION_USER ='root';
|
|
$ADODB_SESSION_PWD ='';
|
|
$ADODB_SESSION_DB ='xphplens_2';
|
|
}
|
|
|
|
if (empty($ADODB_SESSION_EXPIRE_NOTIFY)) {
|
|
$ADODB_SESSION_EXPIRE_NOTIFY = false;
|
|
}
|
|
// Made table name configurable - by David Johnson djohnson@inpro.net
|
|
if (empty($ADODB_SESSION_TBL)){
|
|
$ADODB_SESSION_TBL = 'sessions';
|
|
}
|
|
|
|
|
|
// defaulting $ADODB_SESSION_USE_LOBS
|
|
if (!isset($ADODB_SESSION_USE_LOBS) || empty($ADODB_SESSION_USE_LOBS)) {
|
|
$ADODB_SESSION_USE_LOBS = false;
|
|
}
|
|
|
|
/*
|
|
$ADODB_SESS['driver'] = $ADODB_SESSION_DRIVER;
|
|
$ADODB_SESS['connect'] = $ADODB_SESSION_CONNECT;
|
|
$ADODB_SESS['user'] = $ADODB_SESSION_USER;
|
|
$ADODB_SESS['pwd'] = $ADODB_SESSION_PWD;
|
|
$ADODB_SESS['db'] = $ADODB_SESSION_DB;
|
|
$ADODB_SESS['life'] = $ADODB_SESS_LIFE;
|
|
$ADODB_SESS['debug'] = $ADODB_SESS_DEBUG;
|
|
|
|
$ADODB_SESS['debug'] = $ADODB_SESS_DEBUG;
|
|
$ADODB_SESS['table'] = $ADODB_SESS_TBL;
|
|
*/
|
|
|
|
/****************************************************************************************\
|
|
Create the connection to the database.
|
|
|
|
If $ADODB_SESS_CONN already exists, reuse that connection
|
|
\****************************************************************************************/
|
|
function adodb_sess_open($save_path, $session_name,$persist=true)
|
|
{
|
|
GLOBAL $ADODB_SESS_CONN;
|
|
if (isset($ADODB_SESS_CONN)) return true;
|
|
|
|
GLOBAL $ADODB_SESSION_CONNECT,
|
|
$ADODB_SESSION_DRIVER,
|
|
$ADODB_SESSION_USER,
|
|
$ADODB_SESSION_PWD,
|
|
$ADODB_SESSION_DB,
|
|
$ADODB_SESS_DEBUG;
|
|
|
|
// cannot use & below - do not know why...
|
|
$ADODB_SESS_CONN = ADONewConnection($ADODB_SESSION_DRIVER);
|
|
if (!empty($ADODB_SESS_DEBUG)) {
|
|
$ADODB_SESS_CONN->debug = true;
|
|
ADOConnection::outp( " conn=$ADODB_SESSION_CONNECT user=$ADODB_SESSION_USER pwd=$ADODB_SESSION_PWD db=$ADODB_SESSION_DB ");
|
|
}
|
|
if ($persist) $ok = $ADODB_SESS_CONN->PConnect($ADODB_SESSION_CONNECT,
|
|
$ADODB_SESSION_USER,$ADODB_SESSION_PWD,$ADODB_SESSION_DB);
|
|
else $ok = $ADODB_SESS_CONN->Connect($ADODB_SESSION_CONNECT,
|
|
$ADODB_SESSION_USER,$ADODB_SESSION_PWD,$ADODB_SESSION_DB);
|
|
|
|
if (!$ok) ADOConnection::outp( "<p>Session: connection failed</p>",false);
|
|
}
|
|
|
|
/****************************************************************************************\
|
|
Close the connection
|
|
\****************************************************************************************/
|
|
function adodb_sess_close()
|
|
{
|
|
global $ADODB_SESS_CONN;
|
|
|
|
if ($ADODB_SESS_CONN) $ADODB_SESS_CONN->Close();
|
|
return true;
|
|
}
|
|
|
|
/****************************************************************************************\
|
|
Slurp in the session variables and return the serialized string
|
|
\****************************************************************************************/
|
|
function adodb_sess_read($key)
|
|
{
|
|
global $ADODB_SESS_CONN,$ADODB_SESSION_TBL,$ADODB_SESSION_CRC;
|
|
|
|
$rs = $ADODB_SESS_CONN->Execute("SELECT data FROM $ADODB_SESSION_TBL WHERE sesskey = '$key' AND expiry >= " . time());
|
|
if ($rs) {
|
|
if ($rs->EOF) {
|
|
$v = '';
|
|
} else
|
|
$v = rawurldecode(reset($rs->fields));
|
|
|
|
$rs->Close();
|
|
|
|
// new optimization adodb 2.1
|
|
$ADODB_SESSION_CRC = strlen($v).crc32($v);
|
|
|
|
return $v;
|
|
}
|
|
|
|
return ''; // thx to Jorma Tuomainen, webmaster#wizactive.com
|
|
}
|
|
|
|
/****************************************************************************************\
|
|
Write the serialized data to a database.
|
|
|
|
If the data has not been modified since adodb_sess_read(), we do not write.
|
|
\****************************************************************************************/
|
|
function adodb_sess_write($key, $val)
|
|
{
|
|
global
|
|
$ADODB_SESS_CONN,
|
|
$ADODB_SESS_LIFE,
|
|
$ADODB_SESSION_TBL,
|
|
$ADODB_SESS_DEBUG,
|
|
$ADODB_SESSION_CRC,
|
|
$ADODB_SESSION_EXPIRE_NOTIFY,
|
|
$ADODB_SESSION_DRIVER, // added
|
|
$ADODB_SESSION_USE_LOBS; // added
|
|
|
|
$expiry = time() + $ADODB_SESS_LIFE;
|
|
|
|
// crc32 optimization since adodb 2.1
|
|
// now we only update expiry date, thx to sebastian thom in adodb 2.32
|
|
if ($ADODB_SESSION_CRC !== false && $ADODB_SESSION_CRC == strlen($val).crc32($val)) {
|
|
if ($ADODB_SESS_DEBUG) echo "<p>Session: Only updating date - crc32 not changed</p>";
|
|
$qry = "UPDATE $ADODB_SESSION_TBL SET expiry=$expiry WHERE sesskey='$key' AND expiry >= " . time();
|
|
$rs = $ADODB_SESS_CONN->Execute($qry);
|
|
return true;
|
|
}
|
|
$val = rawurlencode($val);
|
|
|
|
$arr = array('sesskey' => $key, 'expiry' => $expiry, 'data' => $val);
|
|
if ($ADODB_SESSION_EXPIRE_NOTIFY) {
|
|
$var = reset($ADODB_SESSION_EXPIRE_NOTIFY);
|
|
global $$var;
|
|
$arr['expireref'] = $$var;
|
|
}
|
|
|
|
|
|
if ($ADODB_SESSION_USE_LOBS === false) { // no lobs, simply use replace()
|
|
$rs = $ADODB_SESS_CONN->Replace($ADODB_SESSION_TBL,$arr, 'sesskey',$autoQuote = true);
|
|
if (!$rs) {
|
|
$err = $ADODB_SESS_CONN->ErrorMsg();
|
|
}
|
|
} else {
|
|
// what value shall we insert/update for lob row?
|
|
switch ($ADODB_SESSION_DRIVER) {
|
|
// empty_clob or empty_lob for oracle dbs
|
|
case "oracle":
|
|
case "oci8":
|
|
case "oci8po":
|
|
case "oci805":
|
|
$lob_value = sprintf("empty_%s()", strtolower($ADODB_SESSION_USE_LOBS));
|
|
break;
|
|
|
|
// null for all other
|
|
default:
|
|
$lob_value = "null";
|
|
break;
|
|
}
|
|
|
|
// do we insert or update? => as for sesskey
|
|
$res = $ADODB_SESS_CONN->Execute("select count(*) as cnt from $ADODB_SESSION_TBL where sesskey = '$key'");
|
|
if ($res && reset($res->fields) > 0) {
|
|
$qry = sprintf("update %s set expiry = %d, data = %s where sesskey = '%s'", $ADODB_SESSION_TBL, $expiry, $lob_value, $key);
|
|
} else {
|
|
// insert
|
|
$qry = sprintf("insert into %s (sesskey, expiry, data) values ('%s', %d, %s)", $ADODB_SESSION_TBL, $key, $expiry, $lob_value);
|
|
}
|
|
|
|
$err = "";
|
|
$rs1 = $ADODB_SESS_CONN->Execute($qry);
|
|
if (!$rs1) {
|
|
$err .= $ADODB_SESS_CONN->ErrorMsg()."\n";
|
|
}
|
|
$rs2 = $ADODB_SESS_CONN->UpdateBlob($ADODB_SESSION_TBL, 'data', $val, "sesskey='$key'", strtoupper($ADODB_SESSION_USE_LOBS));
|
|
if (!$rs2) {
|
|
$err .= $ADODB_SESS_CONN->ErrorMsg()."\n";
|
|
}
|
|
$rs = ($rs1 && $rs2) ? true : false;
|
|
}
|
|
|
|
if (!$rs) {
|
|
ADOConnection::outp( '<p>Session Replace: '.nl2br($err).'</p>',false);
|
|
} else {
|
|
// bug in access driver (could be odbc?) means that info is not commited
|
|
// properly unless select statement executed in Win2000
|
|
if ($ADODB_SESS_CONN->databaseType == 'access')
|
|
$rs = $ADODB_SESS_CONN->Execute("select sesskey from $ADODB_SESSION_TBL WHERE sesskey='$key'");
|
|
}
|
|
return !empty($rs);
|
|
}
|
|
|
|
function adodb_sess_destroy($key)
|
|
{
|
|
global $ADODB_SESS_CONN, $ADODB_SESSION_TBL,$ADODB_SESSION_EXPIRE_NOTIFY;
|
|
|
|
if ($ADODB_SESSION_EXPIRE_NOTIFY) {
|
|
reset($ADODB_SESSION_EXPIRE_NOTIFY);
|
|
$fn = next($ADODB_SESSION_EXPIRE_NOTIFY);
|
|
$savem = $ADODB_SESS_CONN->SetFetchMode(ADODB_FETCH_NUM);
|
|
$rs = $ADODB_SESS_CONN->Execute("SELECT expireref,sesskey FROM $ADODB_SESSION_TBL WHERE sesskey='$key'");
|
|
$ADODB_SESS_CONN->SetFetchMode($savem);
|
|
if ($rs) {
|
|
$ADODB_SESS_CONN->BeginTrans();
|
|
while (!$rs->EOF) {
|
|
$ref = $rs->fields[0];
|
|
$key = $rs->fields[1];
|
|
$fn($ref,$key);
|
|
$del = $ADODB_SESS_CONN->Execute("DELETE FROM $ADODB_SESSION_TBL WHERE sesskey='$key'");
|
|
$rs->MoveNext();
|
|
}
|
|
$ADODB_SESS_CONN->CommitTrans();
|
|
}
|
|
} else {
|
|
$qry = "DELETE FROM $ADODB_SESSION_TBL WHERE sesskey = '$key'";
|
|
$rs = $ADODB_SESS_CONN->Execute($qry);
|
|
}
|
|
return $rs ? true : false;
|
|
}
|
|
|
|
function adodb_sess_gc($maxlifetime)
|
|
{
|
|
global $ADODB_SESS_DEBUG, $ADODB_SESS_CONN, $ADODB_SESSION_TBL,$ADODB_SESSION_EXPIRE_NOTIFY;
|
|
|
|
if ($ADODB_SESSION_EXPIRE_NOTIFY) {
|
|
reset($ADODB_SESSION_EXPIRE_NOTIFY);
|
|
$fn = next($ADODB_SESSION_EXPIRE_NOTIFY);
|
|
$savem = $ADODB_SESS_CONN->SetFetchMode(ADODB_FETCH_NUM);
|
|
$rs = $ADODB_SESS_CONN->Execute("SELECT expireref,sesskey FROM $ADODB_SESSION_TBL WHERE expiry < " . time());
|
|
$ADODB_SESS_CONN->SetFetchMode($savem);
|
|
if ($rs) {
|
|
$ADODB_SESS_CONN->BeginTrans();
|
|
while (!$rs->EOF) {
|
|
$ref = $rs->fields[0];
|
|
$key = $rs->fields[1];
|
|
$fn($ref,$key);
|
|
$del = $ADODB_SESS_CONN->Execute("DELETE FROM $ADODB_SESSION_TBL WHERE sesskey='$key'");
|
|
$rs->MoveNext();
|
|
}
|
|
$ADODB_SESS_CONN->CommitTrans();
|
|
}
|
|
} else {
|
|
$qry = "DELETE FROM $ADODB_SESSION_TBL WHERE expiry < " . time();
|
|
$ADODB_SESS_CONN->Execute($qry);
|
|
|
|
if ($ADODB_SESS_DEBUG) ADOConnection::outp("<p><b>Garbage Collection</b>: $qry</p>");
|
|
}
|
|
// suggested by Cameron, "GaM3R" <gamr@outworld.cx>
|
|
if (defined('ADODB_SESSION_OPTIMIZE')) {
|
|
global $ADODB_SESSION_DRIVER;
|
|
|
|
switch( $ADODB_SESSION_DRIVER ) {
|
|
case 'mysql':
|
|
case 'mysqlt':
|
|
$opt_qry = 'OPTIMIZE TABLE '.$ADODB_SESSION_TBL;
|
|
break;
|
|
case 'postgresql':
|
|
case 'postgresql7':
|
|
$opt_qry = 'VACUUM '.$ADODB_SESSION_TBL;
|
|
break;
|
|
}
|
|
if (!empty($opt_qry)) {
|
|
$ADODB_SESS_CONN->Execute($opt_qry);
|
|
}
|
|
}
|
|
if ($ADODB_SESS_CONN->dataProvider === 'oci8') $sql = 'select TO_CHAR('.($ADODB_SESS_CONN->sysTimeStamp).', \'RRRR-MM-DD HH24:MI:SS\') from '. $ADODB_SESSION_TBL;
|
|
else $sql = 'select '.$ADODB_SESS_CONN->sysTimeStamp.' from '. $ADODB_SESSION_TBL;
|
|
|
|
$rs =& $ADODB_SESS_CONN->SelectLimit($sql,1);
|
|
if ($rs && !$rs->EOF) {
|
|
|
|
$dbts = reset($rs->fields);
|
|
$rs->Close();
|
|
$dbt = $ADODB_SESS_CONN->UnixTimeStamp($dbts);
|
|
$t = time();
|
|
if (abs($dbt - $t) >= ADODB_SESSION_SYNCH_SECS) {
|
|
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-$t)/3600)." hrs)";
|
|
error_log($msg);
|
|
if ($ADODB_SESS_DEBUG) ADOConnection::outp("<p>$msg</p>");
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
session_module_name('user');
|
|
session_set_save_handler(
|
|
"adodb_sess_open",
|
|
"adodb_sess_close",
|
|
"adodb_sess_read",
|
|
"adodb_sess_write",
|
|
"adodb_sess_destroy",
|
|
"adodb_sess_gc");
|
|
}
|
|
|
|
/* TEST SCRIPT -- UNCOMMENT */
|
|
|
|
if (0) {
|
|
GLOBAL $HTTP_SESSION_VARS;
|
|
|
|
session_start();
|
|
session_register('AVAR');
|
|
$HTTP_SESSION_VARS['AVAR'] += 1;
|
|
ADOConnection::outp( "<p>\$HTTP_SESSION_VARS['AVAR']={$HTTP_SESSION_VARS['AVAR']}</p>",false);
|
|
}
|
|
|
|
?>
|