continue;
}
if (in_array($sock, $read)) {
$newsock = socket_accept($sock);
connect($newsock);
$key = array_search($sock, $read);
unset($read[$key]);
}
foreach ($read as $socket) {
$bytes = @socket_recv($socket, $buffer, 2048, 0);
if ($bytes == 0) {
disconnect($socket);
} else {
$user = getuserbysocket($socket);
if (!$user->handshake) {
dohandshake($user, $buffer);
console("User " . $user->id . " Connected!");
send($user->socket, "You are connected. ID = " . $user->id . "<br/>");
#global_msg("[GLOBAL MESSAGE] User ".$user->id." logged in!<br/>");
} else {
#console("\nprocess -> id: " . $user->id);
#process($socket,$buffer);
$val = json_decode(unmask($buffer), true);
#console(var_dump(mysql_real_escape_string($val['message'])));
//disconnect user!!!!!!!!!!!!!!!!!!!!!!! anti double login
if (isset($val['uname'])) {
foreach ($users as $u) {
if ($val['uname'] == $u->name) {
if ($u->id != $user->id) {
disconnect($u->socket);
}
if ($socket == $master) {
$client = socket_accept($master);
if ($client < 0) {
console("socket_accept() failed");
continue;
} else {
connect($client);
}
} else {
$buf = socket_read($socket, 2048);
if (empty($buf)) {
disconnect($socket);
} else {
$user = getuserbysocket($socket);
if (!$user->handshake) {
dohandshake($user, $buf);
} else {
$read = $buf;
while (!empty($buf) && ord(substr($read, -1)) != 255) {
$buf = socket_read($socket, 2048);
$read .= $buf;
}
// For some reason, every now and then messages are grouped
$msgs = explode(chr(255), $read);
foreach ($msgs as $msg) {
if (strlen($msg) > 2) {
process($user, $msg . chr(255));
}
}
}
}
if ($socket == $master) {
$client = socket_accept($master);
if ($client < 0) {
console("socket_accept() failed");
continue;
} else {
connect($client);
}
} else {
$bytes = @socket_recv($socket, $stream, 2048, 0);
if ($bytes == 0) {
disconnect($socket);
} else {
$user = getuserbysocket($socket);
if (!$user->handshake) {
dohandshake($user, $stream);
} else {
process($user, $stream);
}
}
}
}
}
/******************** MESSAGING ********************/
function process($user, $msg)
{
$msg = unwrap($msg);
// remove chr(0) and chr(255)
say("< " . $msg);
$parts = explode("|", $msg);
// CHAT|NICK|MESSAGE
function wsProcessClientHandshake($clientID, &$buffer)
{
// fetch headers and request line
$sep = strpos($buffer, "\r\n\r\n");
if (!$sep) {
return false;
}
$headers = explode("\r\n", substr($buffer, 0, $sep));
$headersCount = sizeof($headers);
// includes request line
if ($headersCount < 1) {
return false;
}
// fetch request and check it has at least 3 parts (space tokens)
$request =& $headers[0];
$requestParts = explode(' ', $request);
$requestPartsSize = sizeof($requestParts);
if ($requestPartsSize < 3) {
return false;
}
// check request method is GET
if (strtoupper($requestParts[0]) != 'GET') {
return false;
}
// check request HTTP version is at least 1.1
$httpPart =& $requestParts[$requestPartsSize - 1];
$httpParts = explode('/', $httpPart);
if (!isset($httpParts[1]) || (double) $httpParts[1] < 1.1) {
return false;
}
// store headers into a keyed array: array[headerKey] = headerValue
$headersKeyed = array();
for ($i = 1; $i < $headersCount; $i++) {
$parts = explode(':', $headers[$i]);
if (!isset($parts[1])) {
return false;
}
$headersKeyed[trim($parts[0])] = trim($parts[1]);
}
// check Host header was received
if (!isset($headersKeyed['Host'])) {
return false;
}
// check Sec-WebSocket-Key header was received and decoded value length is 16
if (isset($headersKeyed['Sec-WebSocket-Key'])) {
// RFC6455 Standard Format
$key = $headersKeyed['Sec-WebSocket-Key'];
if (strlen(base64_decode($key)) != 16) {
return false;
}
// check Sec-WebSocket-Version header was received and value is 7
if (!isset($headersKeyed['Sec-WebSocket-Version']) || (int) $headersKeyed['Sec-WebSocket-Version'] < 7) {
return false;
}
// should really be != 7, but Firefox 7 beta users send 8
// work out hash to use in Sec-WebSocket-Accept reply header
$hash = base64_encode(sha1($key . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11', true));
// build headers
$headers = array('HTTP/1.1 101 Switching Protocols', 'Upgrade: WebSocket', 'Connection: Upgrade', 'Sec-WebSocket-Accept: ' . $hash);
$headers = implode("\r\n", $headers) . "\r\n\r\n";
} elseif (isset($headersKeyed['Sec-WebSocket-Key1']) && isset($headersKeyed['Sec-WebSocket-Key2'])) {
// Deprecated Hixie-76 (Safari/iOS)
//Does not currently support Hixie-76
echo "--H76I: Incoming Hixie-76 connection below\r\n";
$this->wsClients[$clientID][12] = true;
$headers = dohandshake($buffer);
//return false;
} else {
return false;
}
// send headers back to client
$socket = $this->wsClients[$clientID][0];
$left = strlen($headers);
do {
$sent = socket_send($socket, $headers, $left, 0);
if ($sent === false) {
return false;
}
$left -= $sent;
if ($sent > 0) {
$headers = substr($headers, $sent);
}
} while ($left > 0);
return true;
}
