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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/IPv4Address.h>
#include <AK/Types.h>
#include <LibCore/Notifier.h>
#include <LibCore/UDPServer.h>
#include <LibCore/UDPSocket.h>
#include <stdio.h>
#include <sys/socket.h>
namespace Core {
UDPServer::UDPServer(Object* parent)
: Object(parent)
{
m_fd = socket(AF_INET, SOCK_DGRAM | SOCK_NONBLOCK | SOCK_CLOEXEC, 0);
ASSERT(m_fd >= 0);
}
UDPServer::~UDPServer()
{
}
bool UDPServer::listen(const IPv4Address& address, u16 port)
{
if (m_listening)
return false;
int rc;
auto socket_address = SocketAddress(address, port);
auto in = socket_address.to_sockaddr_in();
rc = ::bind(m_fd, (const sockaddr*)&in, sizeof(in));
ASSERT(rc == 0);
rc = ::listen(m_fd, 5);
ASSERT(rc == 0);
m_listening = true;
m_notifier = Notifier::construct(m_fd, Notifier::Event::Read, this);
m_notifier->on_ready_to_read = [this] {
if (on_ready_to_accept)
on_ready_to_accept();
};
return true;
}
RefPtr<UDPSocket> UDPServer::accept()
{
ASSERT(m_listening);
sockaddr_in in;
socklen_t in_size = sizeof(in);
int accepted_fd = ::accept(m_fd, (sockaddr*)&in, &in_size);
if (accepted_fd < 0) {
perror("accept");
return nullptr;
}
return UDPSocket::construct(accepted_fd);
}
Optional<IPv4Address> UDPServer::local_address() const
{
if (m_fd == -1)
return {};
sockaddr_in address;
socklen_t len = sizeof(address);
if (getsockname(m_fd, (sockaddr*)&address, &len) != 0)
return {};
return IPv4Address(address.sin_addr.s_addr);
}
Optional<u16> UDPServer::local_port() const
{
if (m_fd == -1)
return {};
sockaddr_in address;
socklen_t len = sizeof(address);
if (getsockname(m_fd, (sockaddr*)&address, &len) != 0)
return {};
return ntohs(address.sin_port);
}
}
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