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| <?php
require_once dirname(dirname(__FILE__)) . '/Config.php';
require_once dirname(dirname(__FILE__)) . '/lib/RedisUtile.php';
require_once dirname(dirname(__FILE__)) . '/lib/Common.php';
class QRServer {
private $_sock;
private $_redis;
private $_clients = array();
public function __construct()
{
set_time_limit(0);
$this->_sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP) or die("Could not create socket" . PHP_EOL);
socket_set_option($this->_sock, SOL_SOCKET, SO_REUSEADDR, 1);
socket_bind($this->_sock, \Config::QRSERVER_HOST, \Config::QRSERVER_PROT) or die("Could not bind to socket" . PHP_EOL);
socket_listen($this->_sock, 4) or die("Could not set up socket listener" . PHP_EOL);
$this->_redis = \lib\RedisUtile::getInstance();
}
public function run()
{
$this->_clients = array();
$this->_clients[uniqid()] = $this->_sock;
while (true){
$changes = $this->_clients;
$write = NULL;
$except = NULL;
socket_select($changes, $write, $except, NULL);
foreach ($changes as $key => $_sock) {
if($this->_sock == $_sock){
if(($newClient = socket_accept($_sock)) === false){
die('failed to accept socket: '.socket_strerror($_sock)."\n");
}
$buffer = trim(socket_read($newClient, 1024));
$response = $this->handShake($buffer);
socket_write($newClient, $response, strlen($response));
socket_getpeername($newClient, $ip);
$qid = $this->getHandQid($buffer);
$this->log("new clinet: ". $qid);
if ($qid) {
if (isset($this->_clients[$qid])) $this->close($qid, $this->_clients[$qid]);
$this->_clients[$qid] = $newClient;
} else {
$this->close($qid, $newClient);
}
} else {
if ($this->_redis->exists(\lib\Common::getQidKey($key))) {
$loginKey = \lib\Common::getQidLoginKey($key);
if ($this->_redis->exists($loginKey)) {
$this->send($key, $this->_redis->get($loginKey));
$this->close($key, $_sock);
}
$res = socket_recv($_sock, $buffer, 2048, 0);
if (false === $res) {
$this->close($key, $_sock);
} else {
$res && $this->log("{$key} clinet msg: " . $this->message($buffer));
}
} else {
$this->close($key, $this->_clients[$key]);
}
}
}
sleep(1);
}
}
private function handShake($buf){
$buf = substr($buf,strpos($buf,'Sec-WebSocket-Key:') + 18);
$key = trim(substr($buf, 0, strpos($buf,"\r\n")));
$newKey = base64_encode(sha1($key."258EAFA5-E914-47DA-95CA-C5AB0DC85B11",true));
$newMessage = "HTTP/1.1 101 Switching Protocols\r\n";
$newMessage .= "Upgrade: websocket\r\n";
$newMessage .= "Sec-WebSocket-Version: 13\r\n";
$newMessage .= "Connection: Upgrade\r\n";
$newMessage .= "Sec-WebSocket-Accept: " . $newKey . "\r\n\r\n";
return $newMessage;
}
private function getHandQid($buf) {
preg_match("/^[\s\n]?GET\s+\/\?qid\=([a-z0-9]+)\s+HTTP.*/", $buf, $matches);
$qid = isset($matches[1]) ? $matches[1] : '';
return $qid;
}
private function frame($s) {
$a = str_split($s, 125);
if (count($a) == 1) {
return "\x81" . chr(strlen($a[0])) . $a[0];
}
$ns = "";
foreach ($a as $o) {
$ns .= "\x81" . chr(strlen($o)) . $o;
}
return $ns;
}
private function message($buffer){
$masks = $data = $decoded = null;
$len = ord($buffer[1]) & 127;
if ($len === 126) {
$masks = substr($buffer, 4, 4);
$data = substr($buffer, 8);
} else if ($len === 127) {
$masks = substr($buffer, 10, 4);
$data = substr($buffer, 14);
} else {
$masks = substr($buffer, 2, 4);
$data = substr($buffer, 6);
}
for ($index = 0; $index < strlen($data); $index++) {
$decoded .= $data[$index] ^ $masks[$index % 4];
}
return $decoded;
}
private function send($qid, $msg)
{
$frameMsg = $this->frame($msg);
socket_write($this->_clients[$qid], $frameMsg, strlen($frameMsg));
$this->log("{$qid} clinet send: " . $msg);
}
private function close($qid, $socket)
{
socket_close($socket);
if (array_key_exists($qid, $this->_clients)) unset($this->_clients[$qid]);
$this->_redis->del(\lib\Common::getQidKey($qid));
$this->_redis->del(\lib\Common::getQidLoginKey($qid));
$this->log("{$qid} clinet close");
}
private function log($msg)
{
echo '['. date('Y-m-d H:i:s') .'] ' . $msg . "\n";
}
}
$server = new QRServer();
$server->run();
|
