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155 lines
4.1 KiB
PHP
155 lines
4.1 KiB
PHP
<?php
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/*
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+-----------------------------------------------------------------------+
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| program/include/session.inc |
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| This file is part of the RoundCube Webmail client |
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| Copyright (C) 2005, RoundCube Dev, - Switzerland |
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| Licensed under the GNU GPL |
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| PURPOSE: |
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| Provide database supported session management |
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+-----------------------------------------------------------------------+
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| Author: Thomas Bruederli <roundcube@gmail.com> |
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+-----------------------------------------------------------------------+
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$Id$
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*/
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function sess_open($save_path, $session_name)
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{
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return TRUE;
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}
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function sess_close()
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{
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return TRUE;
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}
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// read session data
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function sess_read($key)
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{
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global $DB, $SESS_CHANGED;
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$sql_result = $DB->query("SELECT vars, ip, ".$DB->unixtimestamp('changed')." AS changed
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FROM ".get_table_name('session')."
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WHERE sess_id=?",
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$key);
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if ($sql_arr = $DB->fetch_assoc($sql_result))
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{
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$SESS_CHANGED = mktime(); //$sql_arr['changed'];
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if (strlen($sql_arr['vars']))
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return $sql_arr['vars'];
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}
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return FALSE;
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}
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// save session data
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function sess_write($key, $vars)
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{
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global $DB;
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$sql_result = $DB->query("SELECT 1
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FROM ".get_table_name('session')."
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WHERE sess_id=?",
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$key);
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if ($DB->num_rows($sql_result))
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{
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session_decode($vars);
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$DB->query("UPDATE ".get_table_name('session')."
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SET vars=?,
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changed=now()
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WHERE sess_id=?",
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$vars,
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$key);
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}
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else
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{
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$DB->query("INSERT INTO ".get_table_name('session')."
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(sess_id, vars, ip, created, changed)
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VALUES (?, ?, ?, now(), now())",
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$key,
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$vars,
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$_SERVER['REMOTE_ADDR']);
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}
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return TRUE;
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}
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// handler for session_destroy()
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function sess_destroy($key)
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{
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global $DB;
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// delete session entries in cache table
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$DB->query("DELETE FROM ".get_table_name('cache')."
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WHERE session_id=?",
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$key);
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$DB->query("DELETE FROM ".get_table_name('session')."
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WHERE sess_id=?",
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$key);
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rcmail_clear_session_temp($key);
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return TRUE;
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}
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// garbage collecting function
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function sess_gc($maxlifetime)
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{
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global $DB;
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// get all expired sessions
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$sql_result = $DB->query("SELECT sess_id
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FROM ".get_table_name('session')."
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WHERE ".$DB->unixtimestamp('now()')."-".$DB->unixtimestamp('changed')." > ?",
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$maxlifetime);
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$a_exp_sessions = array();
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while ($sql_arr = $DB->fetch_assoc($sql_result))
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$a_exp_sessions[] = $sql_arr['sess_id'];
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if (sizeof($a_exp_sessions))
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{
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// delete session cache records
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$DB->query("DELETE FROM ".get_table_name('cache')."
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WHERE session_id IN ('".join("','", $a_exp_sessions)."')");
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// delete session records
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$DB->query("DELETE FROM ".get_table_name('session')."
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WHERE sess_id IN ('".join("','", $a_exp_sessions)."')");
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}
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// remove session specific temp dirs
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foreach ($a_exp_sessions as $key)
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rcmail_clear_session_temp($key);
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// also run message cache GC
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rcmail_message_cache_gc();
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return TRUE;
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}
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// set custom functions for PHP session management
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session_set_save_handler('sess_open', 'sess_close', 'sess_read', 'sess_write', 'sess_destroy', 'sess_gc');
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?>
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