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130 lines
2.8 KiB
C++
130 lines
2.8 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/IPv4Address.h>
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#include <AK/Types.h>
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#include <LibCore/Notifier.h>
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#include <LibCore/TCPServer.h>
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#include <LibCore/TCPSocket.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <sys/socket.h>
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#include <unistd.h>
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#ifndef SOCK_NONBLOCK
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# include <sys/ioctl.h>
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#endif
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namespace Core {
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TCPServer::TCPServer(Object* parent)
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: Object(parent)
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{
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#ifdef SOCK_NONBLOCK
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m_fd = socket(AF_INET, SOCK_STREAM | SOCK_NONBLOCK | SOCK_CLOEXEC, 0);
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#else
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m_fd = socket(AF_INET, SOCK_STREAM, 0);
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int option = 1;
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ioctl(m_fd, FIONBIO, &option);
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fcntl(m_fd, F_SETFD, FD_CLOEXEC);
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#endif
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VERIFY(m_fd >= 0);
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}
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TCPServer::~TCPServer()
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{
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::close(m_fd);
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}
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bool TCPServer::listen(const IPv4Address& address, u16 port)
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{
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if (m_listening)
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return false;
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auto socket_address = SocketAddress(address, port);
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auto in = socket_address.to_sockaddr_in();
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if (::bind(m_fd, (const sockaddr*)&in, sizeof(in)) < 0) {
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perror("TCPServer::listen: bind");
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return false;
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}
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if (::listen(m_fd, 5) < 0) {
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perror("TCPServer::listen: listen");
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return false;
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}
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m_listening = true;
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m_notifier = Notifier::construct(m_fd, Notifier::Event::Read, this);
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m_notifier->on_ready_to_read = [this] {
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if (on_ready_to_accept)
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on_ready_to_accept();
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};
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return true;
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}
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void TCPServer::set_blocking(bool blocking)
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{
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int flags = fcntl(m_fd, F_GETFL, 0);
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VERIFY(flags >= 0);
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if (blocking)
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flags = fcntl(m_fd, F_SETFL, flags & ~O_NONBLOCK);
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else
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flags = fcntl(m_fd, F_SETFL, flags | O_NONBLOCK);
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VERIFY(flags == 0);
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}
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RefPtr<TCPSocket> TCPServer::accept()
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{
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VERIFY(m_listening);
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sockaddr_in in;
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socklen_t in_size = sizeof(in);
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#ifndef AK_OS_MACOS
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int accepted_fd = ::accept4(m_fd, (sockaddr*)&in, &in_size, SOCK_NONBLOCK | SOCK_CLOEXEC);
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#else
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int accepted_fd = ::accept(m_fd, (sockaddr*)&in, &in_size);
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#endif
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if (accepted_fd < 0) {
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perror("accept");
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return nullptr;
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}
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#ifdef AK_OS_MACOS
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int option = 1;
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(void)ioctl(m_fd, FIONBIO, &option);
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(void)fcntl(accepted_fd, F_SETFD, FD_CLOEXEC);
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#endif
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return TCPSocket::construct(accepted_fd);
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}
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Optional<IPv4Address> TCPServer::local_address() const
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{
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if (m_fd == -1)
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return {};
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sockaddr_in address;
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socklen_t len = sizeof(address);
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if (getsockname(m_fd, (sockaddr*)&address, &len) != 0)
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return {};
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return IPv4Address(address.sin_addr.s_addr);
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}
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Optional<u16> TCPServer::local_port() const
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{
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if (m_fd == -1)
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return {};
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sockaddr_in address;
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socklen_t len = sizeof(address);
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if (getsockname(m_fd, (sockaddr*)&address, &len) != 0)
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return {};
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return ntohs(address.sin_port);
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}
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}
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