103 lines
2.9 KiB
PHP
103 lines
2.9 KiB
PHP
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<?php
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namespace ManiaControl\Communication;
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/**
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* Class for Communicating with other ManiaControls
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* to call @see ManiaControl\Communication\CommunicationManager\createCommunication
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*
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* @author ManiaControl Team <mail@maniacontrol.com>
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* @copyright 2014-2015 ManiaControl Team
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* @license http://www.gnu.org/licenses/ GNU General Public License, Version 3
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*/
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class Communication {
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private $socket;
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private $ip;
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private $port;
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private $encryptionPassword;
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private $buffer = "";
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private $messageQueue = array();
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public function __construct($ip, $port, $encryptionPassword) {
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$this->ip = $ip;
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$this->port = $port;
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$this->encryptionPassword = $encryptionPassword;
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}
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/** Create an Connection */
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public function createConnection() {
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$errno = null;
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$errstr = null;
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$this->socket = @fsockopen($this->ip, $this->port, $errno, $errstr, 2);
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//socket_set_nonblock($this->socket);
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stream_set_blocking($this->socket, 0);
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if ($errno != 0 || !$this->socket) {
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var_dump($errstr);
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return false;
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}
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return true;
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}
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/**
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* Call an Method Asynchronously
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*
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* @param callable $function
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* @param $method
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* @param string $data
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* @return null
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*/
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public function call(callable $function, $method, $data = "") {
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//TODO throw an exception or smth
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if (!$this->socket) {
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return null;
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}
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$data = json_encode(array("method" => $method, "data" => $data));
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$data = openssl_encrypt($data, CommunicationManager::ENCRYPTION_METHOD, $this->encryptionPassword, OPENSSL_RAW_DATA, CommunicationManager::ENCRYPTION_IV);
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array_push($this->messageQueue, $function);
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// Write Request on Socket
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fwrite($this->socket, strlen($data) . "\n" . $data);
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}
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/**
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* Process data on every Tick
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*/
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public function tick() {
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$data = fgets($this->socket, 1024); // reads as much as possible OR nothing at all
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if (strlen($data) > 0) { // got new data
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$this->buffer .= $data; // append new data to buffer
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// handle the data the exact same way
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$arr = explode("\n", $this->buffer, 2);
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while (count($arr) == 2 && strlen($arr[1]) >= (int) $arr[0]) {
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// received full message
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$len = (int) $arr[0];
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$msg = substr($arr[1], 0, $len); // clip msg
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$this->buffer = substr($this->buffer, strlen((string) $len) + 1 /* newline */ + $len); // clip buffer
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// Decode Message
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$data = openssl_decrypt($msg, CommunicationManager::ENCRYPTION_METHOD, $this->encryptionPassword, OPENSSL_RAW_DATA, CommunicationManager::ENCRYPTION_IV);
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$data = json_decode($data);
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// Received something!
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//Call Function with Data
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call_user_func(array_shift($this->messageQueue), $data->error, $data->data);
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// next msg
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$arr = explode("\n", $this->buffer, 2);
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}
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}
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}
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/** Closes the connection, don't call yourself, let it do the Communication Manager */
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public function closeConnection() {
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if ($this->socket) {
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fclose($this->socket);
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}
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}
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}
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