Файл: qa-include/qa-db-cookies.php
Строк: 73
<?php
/*
Question2Answer (c) Gideon Greenspan
http://www.question2answer.org/
File: qa-include/qa-db-cookies.php
Version: See define()s at top of qa-include/qa-base.php
Description: Database access functions for user cookies
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
More about this license: http://www.question2answer.org/license.php
*/
if (!defined('QA_VERSION')) { // don't allow this page to be requested directly from browser
header('Location: ../');
exit;
}
function qa_db_cookie_create($ipaddress)
/*
Create a new random cookie for $ipaddress and insert into database, returning it
*/
{
for ($attempt=0; $attempt<10; $attempt++) {
$cookieid=qa_db_random_bigint();
if (qa_db_cookie_exists($cookieid))
continue;
qa_db_query_sub(
'INSERT INTO ^cookies (cookieid, created, createip) '.
'VALUES (#, NOW(), COALESCE(INET_ATON($), 0))',
$cookieid, $ipaddress
);
return $cookieid;
}
return null;
}
function qa_db_cookie_written($cookieid, $ipaddress)
/*
Note in database that a write operation has been done by user identified by $cookieid and from $ipaddress
*/
{
qa_db_query_sub(
'UPDATE ^cookies SET written=NOW(), writeip=COALESCE(INET_ATON($), 0) WHERE cookieid=#',
$ipaddress, $cookieid
);
}
function qa_db_cookie_exists($cookieid)
/*
Return whether $cookieid exists in database
*/
{
return qa_db_read_one_value(qa_db_query_sub(
'SELECT COUNT(*) FROM ^cookies WHERE cookieid=#',
$cookieid
)) > 0;
}
/*
Omit PHP closing tag to help avoid accidental output
*/