197 lines
5.4 KiB
C++
197 lines
5.4 KiB
C++
/*************************************************************************/
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/* tcp_server_posix.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "tcp_server_posix.h"
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#include "stream_peer_tcp_posix.h"
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#ifdef UNIX_ENABLED
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#include <poll.h>
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#include <errno.h>
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#include <netdb.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <unistd.h>
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#ifndef NO_FCNTL
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#ifdef __HAIKU__
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#include <fcntl.h>
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#else
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#include <sys/fcntl.h>
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#endif
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#else
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#include <sys/ioctl.h>
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#endif
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#ifdef JAVASCRIPT_ENABLED
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#include <arpa/inet.h>
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#endif
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#include <assert.h>
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#include <netinet/in.h>
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#include <sys/socket.h>
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#include "drivers/unix/socket_helpers.h"
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TCP_Server *TCPServerPosix::_create() {
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return memnew(TCPServerPosix);
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};
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void TCPServerPosix::make_default() {
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TCP_Server::_create = TCPServerPosix::_create;
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};
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Error TCPServerPosix::listen(uint16_t p_port, const IP_Address &p_bind_address) {
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ERR_FAIL_COND_V(listen_sockfd != -1, ERR_ALREADY_IN_USE);
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ERR_FAIL_COND_V(!p_bind_address.is_valid() && !p_bind_address.is_wildcard(), ERR_INVALID_PARAMETER);
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int sockfd;
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#ifdef __OpenBSD__
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sock_type = IP::TYPE_IPV4; // OpenBSD does not support dual stacking, fallback to IPv4 only.
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#else
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sock_type = IP::TYPE_ANY;
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#endif
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// If the bind address is valid use its type as the socket type
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if (p_bind_address.is_valid())
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sock_type = p_bind_address.is_ipv4() ? IP::TYPE_IPV4 : IP::TYPE_IPV6;
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sockfd = _socket_create(sock_type, SOCK_STREAM, IPPROTO_TCP);
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ERR_FAIL_COND_V(sockfd == -1, FAILED);
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#ifndef NO_FCNTL
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fcntl(sockfd, F_SETFL, O_NONBLOCK);
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#else
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int bval = 1;
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ioctl(sockfd, FIONBIO, &bval);
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#endif
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int reuse = 1;
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if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (char *)&reuse, sizeof(reuse)) < 0) {
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WARN_PRINT("REUSEADDR failed!")
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}
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struct sockaddr_storage addr;
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size_t addr_size = _set_listen_sockaddr(&addr, p_port, sock_type, p_bind_address);
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if (bind(sockfd, (struct sockaddr *)&addr, addr_size) != -1) {
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if (::listen(sockfd, 1) == -1) {
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close(sockfd);
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ERR_FAIL_V(FAILED);
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};
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} else {
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return ERR_ALREADY_IN_USE;
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};
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if (listen_sockfd != -1) {
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stop();
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};
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listen_sockfd = sockfd;
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return OK;
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};
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bool TCPServerPosix::is_connection_available() const {
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if (listen_sockfd == -1) {
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return false;
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};
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struct pollfd pfd;
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pfd.fd = listen_sockfd;
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pfd.events = POLLIN;
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pfd.revents = 0;
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int ret = poll(&pfd, 1, 0);
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ERR_FAIL_COND_V(ret < 0, FAILED);
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if (ret && (pfd.revents & POLLIN)) {
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return true;
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};
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return false;
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};
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Ref<StreamPeerTCP> TCPServerPosix::take_connection() {
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if (!is_connection_available()) {
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return Ref<StreamPeerTCP>();
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};
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struct sockaddr_storage their_addr;
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socklen_t size = sizeof(their_addr);
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int fd = accept(listen_sockfd, (struct sockaddr *)&their_addr, &size);
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ERR_FAIL_COND_V(fd == -1, Ref<StreamPeerTCP>());
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#ifndef NO_FCNTL
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fcntl(fd, F_SETFL, O_NONBLOCK);
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#else
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int bval = 1;
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ioctl(fd, FIONBIO, &bval);
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#endif
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Ref<StreamPeerTCPPosix> conn = memnew(StreamPeerTCPPosix);
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IP_Address ip;
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int port = 0;
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_set_ip_addr_port(ip, port, &their_addr);
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conn->set_socket(fd, ip, port, sock_type);
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return conn;
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};
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void TCPServerPosix::stop() {
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if (listen_sockfd != -1) {
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int ret = close(listen_sockfd);
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ERR_FAIL_COND(ret != 0);
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};
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listen_sockfd = -1;
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sock_type = IP::TYPE_NONE;
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};
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TCPServerPosix::TCPServerPosix() {
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listen_sockfd = -1;
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sock_type = IP::TYPE_NONE;
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};
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TCPServerPosix::~TCPServerPosix() {
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stop();
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};
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#endif
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