godot/drivers/unix/tcp_server_posix.cpp
2017-08-27 14:16:55 +02:00

198 lines
5.4 KiB
C++

/*************************************************************************/
/* tcp_server_posix.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "tcp_server_posix.h"
#include "stream_peer_tcp_posix.h"
#ifdef UNIX_ENABLED
#include <poll.h>
#include <errno.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#ifndef NO_FCNTL
#ifdef __HAIKU__
#include <fcntl.h>
#else
#include <sys/fcntl.h>
#endif
#else
#include <sys/ioctl.h>
#endif
#ifdef JAVASCRIPT_ENABLED
#include <arpa/inet.h>
#endif
#include <assert.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include "drivers/unix/socket_helpers.h"
TCP_Server *TCPServerPosix::_create() {
return memnew(TCPServerPosix);
};
void TCPServerPosix::make_default() {
TCP_Server::_create = TCPServerPosix::_create;
};
Error TCPServerPosix::listen(uint16_t p_port, const IP_Address &p_bind_address) {
ERR_FAIL_COND_V(listen_sockfd != -1, ERR_ALREADY_IN_USE);
ERR_FAIL_COND_V(!p_bind_address.is_valid() && !p_bind_address.is_wildcard(), ERR_INVALID_PARAMETER);
int sockfd;
#ifdef __OpenBSD__
sock_type = IP::TYPE_IPV4; // OpenBSD does not support dual stacking, fallback to IPv4 only.
#else
sock_type = IP::TYPE_ANY;
#endif
// If the bind address is valid use its type as the socket type
if (p_bind_address.is_valid())
sock_type = p_bind_address.is_ipv4() ? IP::TYPE_IPV4 : IP::TYPE_IPV6;
sockfd = _socket_create(sock_type, SOCK_STREAM, IPPROTO_TCP);
ERR_FAIL_COND_V(sockfd == -1, FAILED);
#ifndef NO_FCNTL
fcntl(sockfd, F_SETFL, O_NONBLOCK);
#else
int bval = 1;
ioctl(sockfd, FIONBIO, &bval);
#endif
int reuse = 1;
if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (char *)&reuse, sizeof(reuse)) < 0) {
WARN_PRINT("REUSEADDR failed!")
}
struct sockaddr_storage addr;
size_t addr_size = _set_listen_sockaddr(&addr, p_port, sock_type, p_bind_address);
if (bind(sockfd, (struct sockaddr *)&addr, addr_size) != -1) {
if (::listen(sockfd, 1) == -1) {
close(sockfd);
ERR_FAIL_V(FAILED);
};
} else {
return ERR_ALREADY_IN_USE;
};
if (listen_sockfd != -1) {
stop();
};
listen_sockfd = sockfd;
return OK;
};
bool TCPServerPosix::is_connection_available() const {
if (listen_sockfd == -1) {
return false;
};
struct pollfd pfd;
pfd.fd = listen_sockfd;
pfd.events = POLLIN;
pfd.revents = 0;
int ret = poll(&pfd, 1, 0);
ERR_FAIL_COND_V(ret < 0, FAILED);
if (ret && (pfd.revents & POLLIN)) {
return true;
};
return false;
};
Ref<StreamPeerTCP> TCPServerPosix::take_connection() {
if (!is_connection_available()) {
return Ref<StreamPeerTCP>();
};
struct sockaddr_storage their_addr;
socklen_t size = sizeof(their_addr);
int fd = accept(listen_sockfd, (struct sockaddr *)&their_addr, &size);
ERR_FAIL_COND_V(fd == -1, Ref<StreamPeerTCP>());
#ifndef NO_FCNTL
fcntl(fd, F_SETFL, O_NONBLOCK);
#else
int bval = 1;
ioctl(fd, FIONBIO, &bval);
#endif
Ref<StreamPeerTCPPosix> conn = memnew(StreamPeerTCPPosix);
IP_Address ip;
int port;
_set_ip_addr_port(ip, port, &their_addr);
conn->set_socket(fd, ip, port, sock_type);
return conn;
};
void TCPServerPosix::stop() {
if (listen_sockfd != -1) {
int ret = close(listen_sockfd);
ERR_FAIL_COND(ret != 0);
};
listen_sockfd = -1;
sock_type = IP::TYPE_NONE;
};
TCPServerPosix::TCPServerPosix() {
listen_sockfd = -1;
sock_type = IP::TYPE_NONE;
};
TCPServerPosix::~TCPServerPosix() {
stop();
};
#endif