forked from GNUsocial/gnu-social
		
	
		
			
				
	
	
		
			149 lines
		
	
	
		
			4.2 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			149 lines
		
	
	
		
			4.2 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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/**
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 * Table Definition for session
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 *
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 * StatusNet - the distributed open-source microblogging tool
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 * Copyright (C) 2009, StatusNet, Inc.
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 *
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 * This program is free software: you can redistribute it and/or modify
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 * it under the terms of the GNU Affero General Public License as published by
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 * the Free Software Foundation, either version 3 of the License, or
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 * (at your option) any later version.
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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 Affero General Public License for more details.
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 *
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 * You should have received a copy of the GNU Affero General Public License
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 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 */
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if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
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require_once INSTALLDIR.'/classes/Memcached_DataObject.php';
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class Session extends Memcached_DataObject
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{
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    ###START_AUTOCODE
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    /* the code below is auto generated do not remove the above tag */
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    public $__table = 'session';                         // table name
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    public $id;                              // varchar(32)  primary_key not_null
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    public $session_data;                    // text()
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    public $created;                         // datetime()   not_null
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    public $modified;                        // timestamp()   not_null default_CURRENT_TIMESTAMP
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    /* Static get */
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    function staticGet($k,$v=NULL) { return Memcached_DataObject::staticGet('Session',$k,$v); }
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    /* the code above is auto generated do not remove the tag below */
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    ###END_AUTOCODE
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    static function logdeb($msg)
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    {
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        if (common_config('sessions', 'debug')) {
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            common_debug("Session: " . $msg);
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        }
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    }
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    static function open($save_path, $session_name)
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    {
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        return true;
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    }
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    static function close()
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    {
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        return true;
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    }
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    static function read($id)
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    {
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        self::logdeb("Fetching session '$id'");
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        $session = Session::staticGet('id', $id);
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        if (empty($session)) {
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            return '';
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        } else {
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            return (string)$session->session_data;
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        }
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    }
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    static function write($id, $session_data)
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    {
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        self::logdeb("Writing session '$id'");
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        $session = Session::staticGet('id', $id);
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        if (empty($session)) {
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            $session = new Session();
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            $session->id           = $id;
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            $session->session_data = $session_data;
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            $session->created      = common_sql_now();
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            return $session->insert();
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        } else {
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            if (strcmp($session->session_data, $session_data) == 0) {
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                self::logdeb("Not writing session '$id'; unchanged");
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                return true;
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            } else {
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                self::logdeb("Session '$id' data changed; updating");
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                $orig = clone($session);
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                $session->session_data = $session_data;
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                return $session->update($orig);
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            }
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        }
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    }
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    static function destroy($id)
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    {
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        self::logdeb("Deleting session $id");
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        $session = Session::staticGet('id', $id);
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        if (!empty($session)) {
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            return $session->delete();
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        }
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    }
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    static function gc($maxlifetime)
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    {
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        self::logdeb("garbage collection (maxlifetime = $maxlifetime)");
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        $epoch = common_sql_date(time() - $maxlifetime);
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        $ids = array();
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        $session = new Session();
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        $session->whereAdd('modified < "'.$epoch.'"');
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        $session->selectAdd();
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        $session->selectAdd('id');
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        $session->find();
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        while ($session->fetch()) {
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            $ids[] = $session->id;
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        }
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        $session->free();
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        foreach ($ids as $id) {
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            self::destroy($id);
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        }
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    }
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    static function setSaveHandler()
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    {
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        self::logdeb("setting save handlers");
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        $result = session_set_save_handler('Session::open', 'Session::close', 'Session::read',
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                                           'Session::write', 'Session::destroy', 'Session::gc');
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        self::logdeb("save handlers result = $result");
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        return $result;
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    }
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}
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