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Added DNS server

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This commit is contained in:
Deon George
2023-04-22 21:30:30 +10:00
parent 25c3041c67
commit b1d522d8cc
4 changed files with 430 additions and 9 deletions
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49
app/Classes/Sock/SocketServer.php
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@@ -12,12 +12,15 @@ final class SocketServer {
private int $port; // The Port to bind to
private int $backlog = 5; // Number of incoming connections queued
private int $type; // Socket type
private array $handler; // The class and method that will handle our connection
public function __construct(int $port,string $bind='0.0.0.0')
public function __construct(int $port,string $bind='0.0.0.0',int $type=SOCK_STREAM)
{
$this->bind = $bind;
$this->port = $port;
$this->type = $type;
$this->_init();
}
@@ -49,7 +52,18 @@ final class SocketServer {
if (! extension_loaded('pcntl'))
throw new SocketException(SocketException::CANT_ACCEPT,'Missing pcntl extension');
$this->server = socket_create(AF_INET|AF_INET6,SOCK_STREAM,SOL_TCP);
switch ($this->type) {
case SOCK_STREAM:
$this->server = socket_create(AF_INET|AF_INET6,$this->type,SOL_TCP);
break;
case SOCK_DGRAM:
$this->server = socket_create(AF_INET|AF_INET6,$this->type,SOL_UDP);
break;
default:
throw new \Exception('Unknown socket_type:'.$this->type);
}
if ($this->server === FALSE)
throw new SocketException(SocketException::CANT_CREATE_SOCKET,socket_strerror(socket_last_error()));
@@ -78,12 +92,22 @@ final class SocketServer {
if (! $this->handler)
throw new SocketException(SocketException::CANT_LISTEN,'Handler not set.');
if (socket_listen($this->server,$this->backlog) === FALSE)
throw new SocketException(SocketException::CANT_LISTEN,socket_strerror(socket_last_error($this->server)));
if (in_array($this->type,[SOCK_STREAM,SOCK_SEQPACKET]))
if (socket_listen($this->server,$this->backlog) === FALSE)
throw new SocketException(SocketException::CANT_LISTEN,socket_strerror(socket_last_error($this->server)));
Log::info(sprintf('%s:- Listening on [%s:%d]',self::LOGKEY,$this->bind,$this->port));
$this->loop();
switch ($this->type) {
case SOCK_STREAM:
$this->loop_tcp();
break;
case SOCK_DGRAM:
$this->loop_udp();
break;
}
socket_close($this->server);
Log::info(sprintf('%s:= Closed [%s:%d]',self::LOGKEY,$this->bind,$this->port));
@@ -94,7 +118,7 @@ final class SocketServer {
*
* @throws SocketException
*/
private function loop()
private function loop_tcp()
{
while (TRUE) {
if (($accept = socket_accept($this->server)) === FALSE)
@@ -112,6 +136,19 @@ final class SocketServer {
}
}
private function loop_udp()
{
$buf = '';
$remote = [];
$remote['ip'] = NULL;
$remote['port'] = NULL;
while (TRUE) {
if (socket_recvfrom($this->server,$buf,512,MSG_WAITALL,$remote['ip'],$remote['port']))
$this->handler[0]->{$this->handler[1]}($remote,$buf,$this->server);
}
}
/**
* Set our connection handler Class and Method
*