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This project lived only on the server without version control. This is now the starting point for the repository.
94 lines
2.8 KiB
PHP
94 lines
2.8 KiB
PHP
<?php
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/*
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Question2Answer by Gideon Greenspan and contributors
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http://www.question2answer.org/
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Description: Database-level access to tables which monitor rate limits
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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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 General Public License for more details.
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More about this license: http://www.question2answer.org/license.php
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*/
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if (!defined('QA_VERSION')) { // don't allow this page to be requested directly from browser
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header('Location: ../../');
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exit;
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}
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/**
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* Get rate limit information for $action from the database for user $userid and/or IP address $ip, if they're set.
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* Return as an array with the limit type in the key, and a labelled array of the period and count.
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* @param $userid
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* @param $ip
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* @param $action
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* @return array
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*/
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function qa_db_limits_get($userid, $ip, $action)
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{
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$selects = array();
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$arguments = array();
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if (isset($userid)) {
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$selects[] = "(SELECT 'user' AS limitkey, period, count FROM ^userlimits WHERE userid=$ AND action=$)";
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$arguments[] = $userid;
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$arguments[] = $action;
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}
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if (isset($ip)) {
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$selects[] = "(SELECT 'ip' AS limitkey, period, count FROM ^iplimits WHERE ip=UNHEX($) AND action=$)";
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$arguments[] = bin2hex(@inet_pton($ip));
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$arguments[] = $action;
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}
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if (count($selects)) {
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$query = qa_db_apply_sub(implode(' UNION ALL ', $selects), $arguments);
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return qa_db_read_all_assoc(qa_db_query_raw($query), 'limitkey');
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} else
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return array();
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}
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/**
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* Increment the database rate limit count for user $userid and $action by $count within $period
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* @param $userid
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* @param $action
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* @param $period
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* @param $count
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*/
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function qa_db_limits_user_add($userid, $action, $period, $count)
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{
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qa_db_query_sub(
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'INSERT INTO ^userlimits (userid, action, period, count) VALUES ($, $, #, #) ' .
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'ON DUPLICATE KEY UPDATE count=IF(period=#, count+#, #), period=#',
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$userid, $action, $period, $count, $period, $count, $count, $period
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);
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}
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/**
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* Increment the database rate limit count for IP address $ip and $action by $count within $period
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* @param $ip
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* @param $action
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* @param $period
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* @param $count
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*/
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function qa_db_limits_ip_add($ip, $action, $period, $count)
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{
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qa_db_query_sub(
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'INSERT INTO ^iplimits (ip, action, period, count) VALUES (UNHEX($), $, #, #) ' .
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'ON DUPLICATE KEY UPDATE count=IF(period=#, count+#, #), period=#',
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bin2hex(@inet_pton($ip)), $action, $period, $count, $period, $count, $count, $period
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);
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}
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