Execute('UPDATE '. ADODB_Session::table(). ' SET sesskey='. $conn->qstr($new_id). ' WHERE sesskey='.$conn->qstr($old_id)); /* it is possible that the update statement fails due to a collision */ if (!$ok) { session_id($old_id); if (empty($ck)) $ck = session_get_cookie_params(); setcookie(session_name(), session_id(), false, $ck['path'], $ck['domain'], $ck['secure']); return false; } return true; } /* Generate database table for session data @see http://phplens.com/lens/lensforum/msgs.php?id=12280 @return 0 if failure, 1 if errors, 2 if successful. @author Markus Staab http://www.public-4u.de */ function adodb_session_create_table($schemaFile=null,$conn = null) { // set default values if ($schemaFile===null) $schemaFile = ADODB_SESSION . '/session_schema2.xml'; if ($conn===null) $conn = ADODB_Session::_conn(); if (!$conn) return 0; $schema = new adoSchema($conn); $schema->ParseSchema($schemaFile); return $schema->ExecuteSchema(); } /*! \static */ class ADODB_Session { ///////////////////// // getter/setter methods ///////////////////// /* function Lock($lock=null) { static $_lock = false; if (!is_null($lock)) $_lock = $lock; return $lock; } */ /*! */ static function driver($driver = null) { static $_driver = 'mysql'; static $set = false; if (!is_null($driver)) { $_driver = trim($driver); $set = true; } elseif (!$set) { // backwards compatibility if (isset($GLOBALS['ADODB_SESSION_DRIVER'])) { return $GLOBALS['ADODB_SESSION_DRIVER']; } } return $_driver; } /*! */ static function host($host = null) { static $_host = 'localhost'; static $set = false; if (!is_null($host)) { $_host = trim($host); $set = true; } elseif (!$set) { // backwards compatibility if (isset($GLOBALS['ADODB_SESSION_CONNECT'])) { return $GLOBALS['ADODB_SESSION_CONNECT']; } } return $_host; } /*! */ static function user($user = null) { static $_user = 'root'; static $set = false; if (!is_null($user)) { $_user = trim($user); $set = true; } elseif (!$set) { // backwards compatibility if (isset($GLOBALS['ADODB_SESSION_USER'])) { return $GLOBALS['ADODB_SESSION_USER']; } } return $_user; } /*! */ static function password($password = null) { static $_password = ''; static $set = false; if (!is_null($password)) { $_password = $password; $set = true; } elseif (!$set) { // backwards compatibility if (isset($GLOBALS['ADODB_SESSION_PWD'])) { return $GLOBALS['ADODB_SESSION_PWD']; } } return $_password; } /*! */ static function database($database = null) { static $_database = ''; static $set = false; if (!is_null($database)) { $_database = trim($database); $set = true; } elseif (!$set) { // backwards compatibility if (isset($GLOBALS['ADODB_SESSION_DB'])) { return $GLOBALS['ADODB_SESSION_DB']; } } return $_database; } /*! */ static function persist($persist = null) { static $_persist = true; if (!is_null($persist)) { $_persist = trim($persist); } return $_persist; } /*! */ static function lifetime($lifetime = null) { static $_lifetime; static $set = false; if (!is_null($lifetime)) { $_lifetime = (int) $lifetime; $set = true; } elseif (!$set) { // backwards compatibility if (isset($GLOBALS['ADODB_SESS_LIFE'])) { return $GLOBALS['ADODB_SESS_LIFE']; } } if (!$_lifetime) { $_lifetime = ini_get('session.gc_maxlifetime'); if ($_lifetime <= 1) { // bug in PHP 4.0.3 pl 1 -- how about other versions? //print "

Session Error: PHP.INI setting session.gc_maxlifetimenot set: $lifetime

"; $_lifetime = 1440; } } return $_lifetime; } /*! */ static function debug($debug = null) { static $_debug = false; static $set = false; if (!is_null($debug)) { $_debug = (bool) $debug; $conn = ADODB_Session::_conn(); if ($conn) { #$conn->debug = $_debug; } $set = true; } elseif (!$set) { // backwards compatibility if (isset($GLOBALS['ADODB_SESS_DEBUG'])) { return $GLOBALS['ADODB_SESS_DEBUG']; } } return $_debug; } /*! */ static function expireNotify($expire_notify = null) { static $_expire_notify; static $set = false; if (!is_null($expire_notify)) { $_expire_notify = $expire_notify; $set = true; } elseif (!$set) { // backwards compatibility if (isset($GLOBALS['ADODB_SESSION_EXPIRE_NOTIFY'])) { return $GLOBALS['ADODB_SESSION_EXPIRE_NOTIFY']; } } return $_expire_notify; } /*! */ static function table($table = null) { static $_table = 'sessions2'; static $set = false; if (!is_null($table)) { $_table = trim($table); $set = true; } elseif (!$set) { // backwards compatibility if (isset($GLOBALS['ADODB_SESSION_TBL'])) { return $GLOBALS['ADODB_SESSION_TBL']; } } return $_table; } /*! */ static function optimize($optimize = null) { static $_optimize = false; static $set = false; if (!is_null($optimize)) { $_optimize = (bool) $optimize; $set = true; } elseif (!$set) { // backwards compatibility if (defined('ADODB_SESSION_OPTIMIZE')) { return true; } } return $_optimize; } /*! */ static function syncSeconds($sync_seconds = null) { //echo ("

WARNING: ADODB_SESSION::syncSeconds is longer used, please remove this function for your code

"); return 0; } /*! */ static function clob($clob = null) { static $_clob = false; static $set = false; if (!is_null($clob)) { $_clob = strtolower(trim($clob)); $set = true; } elseif (!$set) { // backwards compatibility if (isset($GLOBALS['ADODB_SESSION_USE_LOBS'])) { return $GLOBALS['ADODB_SESSION_USE_LOBS']; } } return $_clob; } /*! */ static function dataFieldName($data_field_name = null) { //echo ("

WARNING: ADODB_SESSION::dataFieldName() is longer used, please remove this function for your code

"); return ''; } /*! */ static function filter($filter = null) { static $_filter = array(); if (!is_null($filter)) { if (!is_array($filter)) { $filter = array($filter); } $_filter = $filter; } return $_filter; } /*! */ static function encryptionKey($encryption_key = null) { static $_encryption_key = 'CRYPTED ADODB SESSIONS ROCK!'; if (!is_null($encryption_key)) { $_encryption_key = $encryption_key; } return $_encryption_key; } ///////////////////// // private methods ///////////////////// /*! */ static function _conn($conn=null) { return isset($GLOBALS['ADODB_SESS_CONN']) ? $GLOBALS['ADODB_SESS_CONN'] : false; } /*! */ static function _crc($crc = null) { static $_crc = false; if (!is_null($crc)) { $_crc = $crc; } return $_crc; } /*! */ static function _init() { session_module_name('user'); session_set_save_handler( array('ADODB_Session', 'open'), array('ADODB_Session', 'close'), array('ADODB_Session', 'read'), array('ADODB_Session', 'write'), array('ADODB_Session', 'destroy'), array('ADODB_Session', 'gc') ); } /*! */ static function _sessionKey() { // use this function to create the encryption key for crypted sessions // crypt the used key, ADODB_Session::encryptionKey() as key and session_id() as salt return crypt(ADODB_Session::encryptionKey(), session_id()); } /*! */ static function _dumprs(&$rs) { $conn = ADODB_Session::_conn(); $debug = ADODB_Session::debug(); if (!$conn) { return; } if (!$debug) { return; } if (!$rs) { echo "
\$rs is null or false
\n"; return; } //echo "
\nAffected_Rows=",$conn->Affected_Rows(),"
\n"; if (!is_object($rs)) { return; } $rs = $conn->_rs2rs($rs); require_once ADODB_SESSION.'/../tohtml.inc.php'; rs2html($rs); $rs->MoveFirst(); } ///////////////////// // public methods ///////////////////// static function config($driver, $host, $user, $password, $database=false,$options=false) { ADODB_Session::driver($driver); ADODB_Session::host($host); ADODB_Session::user($user); ADODB_Session::password($password); ADODB_Session::database($database); if ($driver == 'oci8' || $driver == 'oci8po') $options['lob'] = 'CLOB'; if (isset($options['table'])) ADODB_Session::table($options['table']); if (isset($options['lob'])) ADODB_Session::clob($options['lob']); if (isset($options['debug'])) ADODB_Session::debug($options['debug']); } /*! Create the connection to the database. If $conn already exists, reuse that connection */ static function open($save_path, $session_name, $persist = null) { $conn = ADODB_Session::_conn(); if ($conn) { return true; } $database = ADODB_Session::database(); $debug = ADODB_Session::debug(); $driver = ADODB_Session::driver(); $host = ADODB_Session::host(); $password = ADODB_Session::password(); $user = ADODB_Session::user(); if (!is_null($persist)) { ADODB_Session::persist($persist); } else { $persist = ADODB_Session::persist(); } # these can all be defaulted to in php.ini # assert('$database'); # assert('$driver'); # assert('$host'); $conn = ADONewConnection($driver); if ($debug) { $conn->debug = true; ADOConnection::outp( " driver=$driver user=$user db=$database "); } if (empty($conn->_connectionID)) { // not dsn if ($persist) { switch($persist) { default: case 'P': $ok = $conn->PConnect($host, $user, $password, $database); break; case 'C': $ok = $conn->Connect($host, $user, $password, $database); break; case 'N': $ok = $conn->NConnect($host, $user, $password, $database); break; } } else { $ok = $conn->Connect($host, $user, $password, $database); } } if ($ok) $GLOBALS['ADODB_SESS_CONN'] = $conn; else ADOConnection::outp('

Session: connection failed

', false); return $ok; } /*! Close the connection */ static function close() { /* $conn = ADODB_Session::_conn(); if ($conn) $conn->Close(); */ return true; } /* Slurp in the session variables and return the serialized string */ static function read($key) { $conn = ADODB_Session::_conn(); $filter = ADODB_Session::filter(); $table = ADODB_Session::table(); if (!$conn) { return ''; } //assert('$table'); $binary = $conn->dataProvider === 'mysql' ? '/*! BINARY */' : ''; $sql = "SELECT sessdata FROM $table WHERE sesskey = $binary ".$conn->Param(0)." AND expiry >= " . $conn->sysTimeStamp; /* Lock code does not work as it needs to hold transaction within whole page, and we don't know if developer has commited elsewhere... :( */ #if (ADODB_Session::Lock()) # $rs = $conn->RowLock($table, "$binary sesskey = $qkey AND expiry >= " . time(), sessdata); #else $rs = $conn->Execute($sql, array($key)); //ADODB_Session::_dumprs($rs); if ($rs) { if ($rs->EOF) { $v = ''; } else { $v = reset($rs->fields); $filter = array_reverse($filter); foreach ($filter as $f) { if (is_object($f)) { $v = $f->read($v, ADODB_Session::_sessionKey()); } } $v = rawurldecode($v); } $rs->Close(); ADODB_Session::_crc(strlen($v) . crc32($v)); return $v; } return ''; } /*! Write the serialized data to a database. If the data has not been modified since the last read(), we do not write. */ static function write($key, $oval) { global $ADODB_SESSION_READONLY; if (!empty($ADODB_SESSION_READONLY)) return; $clob = ADODB_Session::clob(); $conn = ADODB_Session::_conn(); $crc = ADODB_Session::_crc(); $debug = ADODB_Session::debug(); $driver = ADODB_Session::driver(); $expire_notify = ADODB_Session::expireNotify(); $filter = ADODB_Session::filter(); $lifetime = ADODB_Session::lifetime(); $table = ADODB_Session::table(); if (!$conn) { return false; } if ($debug) $conn->debug = 1; $sysTimeStamp = $conn->sysTimeStamp; //assert('$table'); $expiry = $conn->OffsetDate($lifetime/(24*3600),$sysTimeStamp); $binary = $conn->dataProvider === 'mysql' ? '/*! BINARY */' : ''; // crc32 optimization since adodb 2.1 // now we only update expiry date, thx to sebastian thom in adodb 2.32 if ($crc !== false && $crc == (strlen($oval) . crc32($oval))) { if ($debug) { echo '

Session: Only updating date - crc32 not changed

'; } $expirevar = ''; if ($expire_notify) { $var = reset($expire_notify); global $$var; if (isset($$var)) { $expirevar = $$var; } } $sql = "UPDATE $table SET expiry = $expiry ,expireref=".$conn->Param('0').", modified = $sysTimeStamp WHERE $binary sesskey = ".$conn->Param('1')." AND expiry >= $sysTimeStamp"; $rs = $conn->Execute($sql,array($expirevar,$key)); return true; } $val = rawurlencode($oval); foreach ($filter as $f) { if (is_object($f)) { $val = $f->write($val, ADODB_Session::_sessionKey()); } } $expireref = ''; if ($expire_notify) { $var = reset($expire_notify); global $$var; if (isset($$var)) { $expireref = $$var; } } if (!$clob) { // no lobs, simply use replace() $rs = $conn->Execute("SELECT COUNT(*) AS cnt FROM $table WHERE $binary sesskey = ".$conn->Param(0),array($key)); if ($rs) $rs->Close(); if ($rs && reset($rs->fields) > 0) { $sql = "UPDATE $table SET expiry=$expiry, sessdata=".$conn->Param(0).", expireref= ".$conn->Param(1).",modified=$sysTimeStamp WHERE sesskey = ".$conn->Param('2'); } else { $sql = "INSERT INTO $table (expiry, sessdata, expireref, sesskey, created, modified) VALUES ($expiry,".$conn->Param('0').", ". $conn->Param('1').", ".$conn->Param('2').", $sysTimeStamp, $sysTimeStamp)"; } $rs = $conn->Execute($sql,array($val,$expireref,$key)); } else { // what value shall we insert/update for lob row? switch ($driver) { // empty_clob or empty_lob for oracle dbs case 'oracle': case 'oci8': case 'oci8po': case 'oci805': $lob_value = sprintf('empty_%s()', strtolower($clob)); break; // null for all other default: $lob_value = 'null'; break; } $conn->StartTrans(); $rs = $conn->Execute("SELECT COUNT(*) AS cnt FROM $table WHERE $binary sesskey = ".$conn->Param(0),array($key)); if ($rs && reset($rs->fields) > 0) { $sql = "UPDATE $table SET expiry=$expiry, sessdata=$lob_value, expireref= ".$conn->Param(0).",modified=$sysTimeStamp WHERE sesskey = ".$conn->Param('1'); } else { $sql = "INSERT INTO $table (expiry, sessdata, expireref, sesskey, created, modified) VALUES ($expiry,$lob_value, ". $conn->Param('0').", ".$conn->Param('1').", $sysTimeStamp, $sysTimeStamp)"; } $rs = $conn->Execute($sql,array($expireref,$key)); $qkey = $conn->qstr($key); $rs2 = $conn->UpdateBlob($table, 'sessdata', $val, " sesskey=$qkey", strtoupper($clob)); if ($debug) echo "
",htmlspecialchars($oval), "
"; $rs = @$conn->CompleteTrans(); } if (!$rs) { ADOConnection::outp('

Session Replace: ' . $conn->ErrorMsg() . '

', 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(); } } }/* if (ADODB_Session::Lock()) { $conn->CommitTrans(); }*/ return $rs ? true : false; } /*! */ static function destroy($key) { $conn = ADODB_Session::_conn(); $table = ADODB_Session::table(); $expire_notify = ADODB_Session::expireNotify(); if (!$conn) { return false; } $debug = ADODB_Session::debug(); if ($debug) $conn->debug = 1; //assert('$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); if ($rs) { $rs->Close(); } return $rs ? true : false; } /*! */ static function gc($maxlifetime) { $conn = ADODB_Session::_conn(); $debug = ADODB_Session::debug(); $expire_notify = ADODB_Session::expireNotify(); $optimize = ADODB_Session::optimize(); $table = ADODB_Session::table(); if (!$conn) { return false; } $debug = ADODB_Session::debug(); if ($debug) { $conn->debug = 1; $COMMITNUM = 2; } else { $COMMITNUM = 20; } //assert('$table'); $time = $conn->OffsetDate(-$maxlifetime/24/3600,$conn->sysTimeStamp); $binary = $conn->dataProvider === 'mysql' ? '/*! BINARY */' : ''; if ($expire_notify) { reset($expire_notify); $fn = next($expire_notify); } else { $fn = false; } $savem = $conn->SetFetchMode(ADODB_FETCH_NUM); $sql = "SELECT expireref, sesskey FROM $table WHERE expiry < $time ORDER BY 2"; # add order by to prevent deadlock $rs = $conn->SelectLimit($sql,1000); ADODB_Session::_dumprs($rs); if ($debug) $conn->SetFetchMode($savem); if ($rs) { $tr = $conn->hasTransactions; if ($tr) $conn->BeginTrans(); $keys = array(); $ccnt = 0; while (!$rs->EOF) { $ref = $rs->fields[0]; $key = $rs->fields[1]; if ($fn) $fn($ref, $key); $del = $conn->Execute("DELETE FROM $table WHERE sesskey=".$conn->Param('0'),array($key)); $rs->MoveNext(); $ccnt += 1; if ($tr && $ccnt % $COMMITNUM == 0) { if ($debug) echo "Commit
\n"; $conn->CommitTrans(); $conn->BeginTrans(); } } $rs->Close(); if ($tr) $conn->CommitTrans(); } // suggested by Cameron, "GaM3R" if ($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); } } return true; } } ADODB_Session::_init(); if (empty($ADODB_SESSION_READONLY)) register_shutdown_function('session_write_close'); // for backwards compatability only function adodb_sess_open($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); } ?>