mirror of
https://github.com/pierre42100/ComunicAPI
synced 2024-11-27 07:49:27 +00:00
141 lines
3.0 KiB
PHP
141 lines
3.0 KiB
PHP
<?php
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/**
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* API Actions limits count
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*
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* @author Pierre HUBERT
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*/
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class APILimits {
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/**
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* Table name
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*/
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const TABLE_NAME = DBprefix."api_limit_count";
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/**
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* Entries live time
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*/
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const KEEP_DATA_FOR = 3600; // 1 hour
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/**
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* Actions list
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*/
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const ACTION_LOGIN_FAILED = "failed_login";
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const ACTION_CREATE_ACCOUNT = "create_account";
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/**
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* Actions configruation
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*/
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const ACTIONS = array(
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//Login failed
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self::ACTION_LOGIN_FAILED => array(
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"limit" => 10
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),
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//Create an account
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self::ACTION_CREATE_ACCOUNT => array(
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"limit" => 10
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),
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);
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/**
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* Limit the number of time a client can perform a query over the API
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*
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* @param string $action The name of the action to limit
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* @param bool $trigger Specify whether this call of the method must be
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* considered as a call of the client or not
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*/
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public function limit_query(string $action, bool $trigger){
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//First, clean old entries
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$this->clean();
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$ip = $_SERVER["REMOTE_ADDR"];
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//If required, increase action by one
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if($trigger)
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$this->trigger($action, $ip);
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//Count the number of time the action occurred
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if($this->count($action, $ip) > self::ACTIONS[$action]["limit"])
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Rest_fatal_error(429, "Too many request. Please try again later.");
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}
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/**
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* Clean old entries
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*/
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public function clean(){
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db()->deleteEntry(
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self::TABLE_NAME,
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"time_start < ?",
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array(time() - self::KEEP_DATA_FOR)
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);
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}
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/**
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* Increase by one the number of the time a client performed
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* an action
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*
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* @param string $action The action to trigger
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* @param string $ip The target IP address
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* @return bool TRUE for a success else FALSE
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*/
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private function trigger(string $action, string $ip) : bool {
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if(!$this->exists($action, $ip)){
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return db()->addLine(self::TABLE_NAME, array(
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"ip" => $ip,
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"time_start" => time(),
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"action" => $action,
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"count" => 1
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));
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}
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else {
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$number = $this->count($action, $ip);
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$number++;
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return db()->updateDB(self::TABLE_NAME,
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"ip = ? AND action = ?",
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array("count" => $number),
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array($ip, $action));
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}
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}
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/**
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* Check wether an action has been referenced at least once in
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* the database
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*
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* @param string $action The action to check
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* @param string $ip The target IP address
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* @return bool TRUE if the entry has been found at least once / FALSE else
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*/
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private function exists(string $action, string $ip) : bool {
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return db()->count(self::TABLE_NAME,
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"WHERE ip = ? AND action = ?",
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array($ip, $action)) > 0;
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}
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/**
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* Count the number of time an IP address has performed an action
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*
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* @param string $action The target action
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* @param string $ip Target IP address
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* @return int The number of time the action has been done
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*/
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private function count(string $action, string $ip) : int {
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$data = db()->select(self::TABLE_NAME,
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"WHERE ip = ? AND action = ?",
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array($ip, $action),
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array("count"));
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if(count($data) < 1)
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return 1;
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else
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return $data[0]["count"];
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}
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} |