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Using codespell 1.14.0. Method: ``` $ cat > ../godot-word-whitelist.txt << EOF ang doubleclick lod nd numer que te unselect EOF $ codespell -w -q 3 -I ../godot-word-whitelist.txt --skip="./thirdparty,*.po" $ git diff // undo unwanted changes ```
617 lines
17 KiB
C++
617 lines
17 KiB
C++
/*************************************************************************/
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/* net_socket_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) 2007-2019 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2019 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 "net_socket_posix.h"
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#if defined(UNIX_ENABLED)
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#include <errno.h>
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#include <netdb.h>
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#include <poll.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/ioctl.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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#include <fcntl.h>
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#else
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#include <sys/ioctl.h>
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#endif
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#include <netinet/in.h>
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#include <sys/socket.h>
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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 <netinet/tcp.h>
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#if defined(__APPLE__)
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#define MSG_NOSIGNAL SO_NOSIGPIPE
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#endif
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// Some custom defines to minimize ifdefs
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#define SOCK_EMPTY -1
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#define SOCK_BUF(x) x
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#define SOCK_CBUF(x) x
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#define SOCK_IOCTL ioctl
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#define SOCK_CLOSE ::close
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/* Windows */
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#elif defined(WINDOWS_ENABLED)
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#include <mswsock.h>
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// Some custom defines to minimize ifdefs
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#define SOCK_EMPTY INVALID_SOCKET
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#define SOCK_BUF(x) (char *)(x)
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#define SOCK_CBUF(x) (const char *)(x)
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#define SOCK_IOCTL ioctlsocket
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#define SOCK_CLOSE closesocket
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// Windows doesn't have this flag
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#ifndef MSG_NOSIGNAL
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#define MSG_NOSIGNAL 0
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#endif
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// Workaround missing flag in MinGW
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#if defined(__MINGW32__) && !defined(SIO_UDP_NETRESET)
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#define SIO_UDP_NETRESET _WSAIOW(IOC_VENDOR, 15)
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#endif
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#endif
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size_t NetSocketPosix::_set_addr_storage(struct sockaddr_storage *p_addr, const IP_Address &p_ip, uint16_t p_port, IP::Type p_ip_type) {
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memset(p_addr, 0, sizeof(struct sockaddr_storage));
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if (p_ip_type == IP::TYPE_IPV6 || p_ip_type == IP::TYPE_ANY) { // IPv6 socket
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// IPv6 only socket with IPv4 address
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ERR_FAIL_COND_V(!p_ip.is_wildcard() && p_ip_type == IP::TYPE_IPV6 && p_ip.is_ipv4(), 0);
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struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)p_addr;
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addr6->sin6_family = AF_INET6;
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addr6->sin6_port = htons(p_port);
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if (p_ip.is_valid()) {
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copymem(&addr6->sin6_addr.s6_addr, p_ip.get_ipv6(), 16);
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} else {
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addr6->sin6_addr = in6addr_any;
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}
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return sizeof(sockaddr_in6);
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} else { // IPv4 socket
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// IPv4 socket with IPv6 address
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ERR_FAIL_COND_V(!p_ip.is_wildcard() && !p_ip.is_ipv4(), 0);
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struct sockaddr_in *addr4 = (struct sockaddr_in *)p_addr;
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addr4->sin_family = AF_INET;
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addr4->sin_port = htons(p_port); // short, network byte order
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if (p_ip.is_valid()) {
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copymem(&addr4->sin_addr.s_addr, p_ip.get_ipv4(), 4);
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} else {
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addr4->sin_addr.s_addr = INADDR_ANY;
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}
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return sizeof(sockaddr_in);
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}
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}
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void NetSocketPosix::_set_ip_port(struct sockaddr_storage *p_addr, IP_Address &r_ip, uint16_t &r_port) {
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if (p_addr->ss_family == AF_INET) {
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struct sockaddr_in *addr4 = (struct sockaddr_in *)p_addr;
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r_ip.set_ipv4((uint8_t *)&(addr4->sin_addr.s_addr));
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r_port = ntohs(addr4->sin_port);
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} else if (p_addr->ss_family == AF_INET6) {
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struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)p_addr;
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r_ip.set_ipv6(addr6->sin6_addr.s6_addr);
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r_port = ntohs(addr6->sin6_port);
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};
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}
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NetSocket *NetSocketPosix::_create_func() {
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return memnew(NetSocketPosix);
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}
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void NetSocketPosix::make_default() {
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#if defined(WINDOWS_ENABLED)
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if (_create == NULL) {
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WSADATA data;
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WSAStartup(MAKEWORD(2, 2), &data);
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}
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#endif
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_create = _create_func;
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}
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void NetSocketPosix::cleanup() {
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#if defined(WINDOWS_ENABLED)
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if (_create != NULL) {
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WSACleanup();
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}
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_create = NULL;
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#endif
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}
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NetSocketPosix::NetSocketPosix() :
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_sock(SOCK_EMPTY),
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_ip_type(IP::TYPE_NONE),
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_is_stream(false) {
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}
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NetSocketPosix::~NetSocketPosix() {
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close();
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}
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NetSocketPosix::NetError NetSocketPosix::_get_socket_error() {
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#if defined(WINDOWS_ENABLED)
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int err = WSAGetLastError();
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if (err == WSAEISCONN)
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return ERR_NET_IS_CONNECTED;
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if (err == WSAEINPROGRESS || err == WSAEALREADY)
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return ERR_NET_IN_PROGRESS;
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if (err == WSAEWOULDBLOCK)
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return ERR_NET_WOULD_BLOCK;
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ERR_PRINTS("Socket error: " + itos(err));
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return ERR_NET_OTHER;
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#else
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if (errno == EISCONN)
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return ERR_NET_IS_CONNECTED;
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if (errno == EINPROGRESS || errno == EALREADY)
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return ERR_NET_IN_PROGRESS;
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if (errno == EAGAIN || errno == EWOULDBLOCK)
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return ERR_NET_WOULD_BLOCK;
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ERR_PRINTS("Socket error: " + itos(errno));
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return ERR_NET_OTHER;
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#endif
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}
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bool NetSocketPosix::_can_use_ip(const IP_Address p_ip, const bool p_for_bind) const {
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if (p_for_bind && !(p_ip.is_valid() || p_ip.is_wildcard())) {
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return false;
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} else if (!p_for_bind && !p_ip.is_valid()) {
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return false;
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}
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// Check if socket support this IP type.
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IP::Type type = p_ip.is_ipv4() ? IP::TYPE_IPV4 : IP::TYPE_IPV6;
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if (_ip_type != IP::TYPE_ANY && !p_ip.is_wildcard() && _ip_type != type) {
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return false;
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}
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return true;
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}
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void NetSocketPosix::_set_socket(SOCKET_TYPE p_sock, IP::Type p_ip_type, bool p_is_stream) {
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_sock = p_sock;
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_ip_type = p_ip_type;
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_is_stream = p_is_stream;
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}
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Error NetSocketPosix::open(Type p_sock_type, IP::Type &ip_type) {
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ERR_FAIL_COND_V(is_open(), ERR_ALREADY_IN_USE);
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ERR_FAIL_COND_V(ip_type > IP::TYPE_ANY || ip_type < IP::TYPE_NONE, ERR_INVALID_PARAMETER);
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#if defined(__OpenBSD__)
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// OpenBSD does not support dual stacking, fallback to IPv4 only.
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if (ip_type == IP::TYPE_ANY)
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ip_type = IP::TYPE_IPV4;
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#endif
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int family = ip_type == IP::TYPE_IPV4 ? AF_INET : AF_INET6;
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int protocol = p_sock_type == TYPE_TCP ? IPPROTO_TCP : IPPROTO_UDP;
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int type = p_sock_type == TYPE_TCP ? SOCK_STREAM : SOCK_DGRAM;
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_sock = socket(family, type, protocol);
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if (_sock == SOCK_EMPTY && ip_type == IP::TYPE_ANY) {
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// Careful here, changing the referenced parameter so the caller knows that we are using an IPv4 socket
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// in place of a dual stack one, and further calls to _set_sock_addr will work as expected.
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ip_type = IP::TYPE_IPV4;
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family = AF_INET;
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_sock = socket(family, type, protocol);
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}
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ERR_FAIL_COND_V(_sock == SOCK_EMPTY, FAILED);
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_ip_type = ip_type;
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if (family == AF_INET6) {
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// Select IPv4 over IPv6 mapping
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set_ipv6_only_enabled(ip_type != IP::TYPE_ANY);
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}
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if (protocol == IPPROTO_UDP && ip_type != IP::TYPE_IPV6) {
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// Enable broadcasting for UDP sockets if it's not IPv6 only (IPv6 has no broadcast option).
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set_broadcasting_enabled(true);
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}
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_is_stream = p_sock_type == TYPE_TCP;
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#if defined(WINDOWS_ENABLED)
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if (!_is_stream) {
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// Disable windows feature/bug reporting WSAECONNRESET/WSAENETRESET when
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// recv/recvfrom and an ICMP reply was received from a previous send/sendto.
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unsigned long disable = 0;
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if (ioctlsocket(_sock, SIO_UDP_CONNRESET, &disable) == SOCKET_ERROR) {
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print_verbose("Unable to turn off UDP WSAECONNRESET behaviour on Windows");
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}
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if (ioctlsocket(_sock, SIO_UDP_NETRESET, &disable) == SOCKET_ERROR) {
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// This feature seems not to be supported on wine.
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print_verbose("Unable to turn off UDP WSAENETRESET behaviour on Windows");
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}
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}
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#endif
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return OK;
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}
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void NetSocketPosix::close() {
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if (_sock != SOCK_EMPTY)
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SOCK_CLOSE(_sock);
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_sock = SOCK_EMPTY;
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_ip_type = IP::TYPE_NONE;
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_is_stream = false;
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}
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Error NetSocketPosix::bind(IP_Address p_addr, uint16_t p_port) {
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ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
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ERR_FAIL_COND_V(!_can_use_ip(p_addr, true), ERR_INVALID_PARAMETER);
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sockaddr_storage addr;
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size_t addr_size = _set_addr_storage(&addr, p_addr, p_port, _ip_type);
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if (::bind(_sock, (struct sockaddr *)&addr, addr_size) == SOCK_EMPTY) {
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close();
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ERR_FAIL_V(ERR_UNAVAILABLE);
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}
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return OK;
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}
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Error NetSocketPosix::listen(int p_max_pending) {
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ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
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if (::listen(_sock, p_max_pending) == SOCK_EMPTY) {
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close();
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ERR_FAIL_V(FAILED);
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};
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return OK;
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}
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Error NetSocketPosix::connect_to_host(IP_Address p_host, uint16_t p_port) {
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ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
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ERR_FAIL_COND_V(!_can_use_ip(p_host, false), ERR_INVALID_PARAMETER);
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struct sockaddr_storage addr;
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size_t addr_size = _set_addr_storage(&addr, p_host, p_port, _ip_type);
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if (::connect(_sock, (struct sockaddr *)&addr, addr_size) == SOCK_EMPTY) {
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NetError err = _get_socket_error();
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switch (err) {
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// We are already connected
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case ERR_NET_IS_CONNECTED:
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return OK;
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// Still waiting to connect, try again in a while
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case ERR_NET_WOULD_BLOCK:
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case ERR_NET_IN_PROGRESS:
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return ERR_BUSY;
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default:
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ERR_PRINT("Connection to remote host failed!");
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close();
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return FAILED;
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}
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}
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return OK;
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}
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Error NetSocketPosix::poll(PollType p_type, int p_timeout) const {
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ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
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#if defined(WINDOWS_ENABLED)
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bool ready = false;
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fd_set rd, wr, ex;
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fd_set *rdp = NULL;
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fd_set *wrp = NULL;
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FD_ZERO(&rd);
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FD_ZERO(&wr);
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FD_ZERO(&ex);
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FD_SET(_sock, &ex);
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struct timeval timeout = { p_timeout, 0 };
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// For blocking operation, pass NULL timeout pointer to select.
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struct timeval *tp = NULL;
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if (p_timeout >= 0) {
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// If timeout is non-negative, we want to specify the timeout instead.
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tp = &timeout;
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}
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switch (p_type) {
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case POLL_TYPE_IN:
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FD_SET(_sock, &rd);
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rdp = &rd;
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break;
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case POLL_TYPE_OUT:
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FD_SET(_sock, &wr);
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wrp = ≀
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break;
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case POLL_TYPE_IN_OUT:
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FD_SET(_sock, &rd);
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FD_SET(_sock, &wr);
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rdp = &rd;
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wrp = ≀
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}
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int ret = select(1, rdp, wrp, &ex, tp);
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ERR_FAIL_COND_V(ret == SOCKET_ERROR, FAILED);
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if (ret == 0)
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return ERR_BUSY;
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ERR_FAIL_COND_V(FD_ISSET(_sock, &ex), FAILED);
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if (rdp && FD_ISSET(_sock, rdp))
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ready = true;
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if (wrp && FD_ISSET(_sock, wrp))
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ready = true;
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return ready ? OK : ERR_BUSY;
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#else
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struct pollfd pfd;
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pfd.fd = _sock;
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pfd.events = POLLIN;
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pfd.revents = 0;
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switch (p_type) {
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case POLL_TYPE_IN:
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pfd.events = POLLIN;
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break;
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case POLL_TYPE_OUT:
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pfd.events = POLLOUT;
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break;
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case POLL_TYPE_IN_OUT:
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pfd.events = POLLOUT || POLLIN;
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}
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int ret = ::poll(&pfd, 1, p_timeout);
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ERR_FAIL_COND_V(ret < 0, FAILED);
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ERR_FAIL_COND_V(pfd.revents & POLLERR, FAILED);
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if (ret == 0)
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return ERR_BUSY;
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return OK;
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#endif
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}
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Error NetSocketPosix::recv(uint8_t *p_buffer, int p_len, int &r_read) {
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ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
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r_read = ::recv(_sock, SOCK_BUF(p_buffer), p_len, 0);
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if (r_read < 0) {
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NetError err = _get_socket_error();
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if (err == ERR_NET_WOULD_BLOCK)
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return ERR_BUSY;
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return FAILED;
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}
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return OK;
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}
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Error NetSocketPosix::recvfrom(uint8_t *p_buffer, int p_len, int &r_read, IP_Address &r_ip, uint16_t &r_port) {
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ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
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struct sockaddr_storage from;
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socklen_t len = sizeof(struct sockaddr_storage);
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memset(&from, 0, len);
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r_read = ::recvfrom(_sock, SOCK_BUF(p_buffer), p_len, 0, (struct sockaddr *)&from, &len);
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if (r_read < 0) {
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NetError err = _get_socket_error();
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if (err == ERR_NET_WOULD_BLOCK)
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return ERR_BUSY;
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return FAILED;
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}
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if (from.ss_family == AF_INET) {
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struct sockaddr_in *sin_from = (struct sockaddr_in *)&from;
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r_ip.set_ipv4((uint8_t *)&sin_from->sin_addr);
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r_port = ntohs(sin_from->sin_port);
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} else if (from.ss_family == AF_INET6) {
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struct sockaddr_in6 *s6_from = (struct sockaddr_in6 *)&from;
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r_ip.set_ipv6((uint8_t *)&s6_from->sin6_addr);
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r_port = ntohs(s6_from->sin6_port);
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} else {
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// Unsupported socket family, should never happen.
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ERR_FAIL_V(FAILED);
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}
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return OK;
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}
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Error NetSocketPosix::send(const uint8_t *p_buffer, int p_len, int &r_sent) {
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ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
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int flags = 0;
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if (_is_stream)
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flags = MSG_NOSIGNAL;
|
|
r_sent = ::send(_sock, SOCK_CBUF(p_buffer), p_len, flags);
|
|
|
|
if (r_sent < 0) {
|
|
NetError err = _get_socket_error();
|
|
if (err == ERR_NET_WOULD_BLOCK)
|
|
return ERR_BUSY;
|
|
|
|
return FAILED;
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
Error NetSocketPosix::sendto(const uint8_t *p_buffer, int p_len, int &r_sent, IP_Address p_ip, uint16_t p_port) {
|
|
ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
|
|
|
|
struct sockaddr_storage addr;
|
|
size_t addr_size = _set_addr_storage(&addr, p_ip, p_port, _ip_type);
|
|
r_sent = ::sendto(_sock, SOCK_CBUF(p_buffer), p_len, 0, (struct sockaddr *)&addr, addr_size);
|
|
|
|
if (r_sent < 0) {
|
|
NetError err = _get_socket_error();
|
|
if (err == ERR_NET_WOULD_BLOCK)
|
|
return ERR_BUSY;
|
|
|
|
return FAILED;
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
void NetSocketPosix::set_broadcasting_enabled(bool p_enabled) {
|
|
ERR_FAIL_COND(!is_open());
|
|
// IPv6 has no broadcast support.
|
|
ERR_FAIL_COND(_ip_type == IP::TYPE_IPV6);
|
|
|
|
int par = p_enabled ? 1 : 0;
|
|
if (setsockopt(_sock, SOL_SOCKET, SO_BROADCAST, SOCK_CBUF(&par), sizeof(int)) != 0) {
|
|
WARN_PRINT("Unable to change broadcast setting");
|
|
}
|
|
}
|
|
|
|
void NetSocketPosix::set_blocking_enabled(bool p_enabled) {
|
|
ERR_FAIL_COND(!is_open());
|
|
|
|
int ret = 0;
|
|
#if defined(WINDOWS_ENABLED) || defined(NO_FCNTL)
|
|
unsigned long par = p_enabled ? 0 : 1;
|
|
ret = SOCK_IOCTL(_sock, FIONBIO, &par);
|
|
#else
|
|
int opts = fcntl(_sock, F_GETFL);
|
|
if (p_enabled)
|
|
ret = fcntl(_sock, F_SETFL, opts & ~O_NONBLOCK);
|
|
else
|
|
ret = fcntl(_sock, F_SETFL, opts | O_NONBLOCK);
|
|
#endif
|
|
|
|
if (ret != 0)
|
|
WARN_PRINT("Unable to change non-block mode");
|
|
}
|
|
|
|
void NetSocketPosix::set_ipv6_only_enabled(bool p_enabled) {
|
|
ERR_FAIL_COND(!is_open());
|
|
// This option is only available in IPv6 sockets.
|
|
ERR_FAIL_COND(_ip_type == IP::TYPE_IPV4);
|
|
|
|
int par = p_enabled ? 1 : 0;
|
|
if (setsockopt(_sock, IPPROTO_IPV6, IPV6_V6ONLY, SOCK_CBUF(&par), sizeof(int)) != 0) {
|
|
WARN_PRINT("Unable to change IPv4 address mapping over IPv6 option");
|
|
}
|
|
}
|
|
|
|
void NetSocketPosix::set_tcp_no_delay_enabled(bool p_enabled) {
|
|
ERR_FAIL_COND(!is_open());
|
|
ERR_FAIL_COND(!_is_stream); // Not TCP
|
|
|
|
int par = p_enabled ? 1 : 0;
|
|
if (setsockopt(_sock, IPPROTO_TCP, TCP_NODELAY, SOCK_CBUF(&par), sizeof(int)) < 0) {
|
|
ERR_PRINT("Unable to set TCP no delay option");
|
|
}
|
|
}
|
|
|
|
void NetSocketPosix::set_reuse_address_enabled(bool p_enabled) {
|
|
ERR_FAIL_COND(!is_open());
|
|
|
|
int par = p_enabled ? 1 : 0;
|
|
if (setsockopt(_sock, SOL_SOCKET, SO_REUSEADDR, SOCK_CBUF(&par), sizeof(int)) < 0) {
|
|
WARN_PRINT("Unable to set socket REUSEADDR option!");
|
|
}
|
|
}
|
|
|
|
void NetSocketPosix::set_reuse_port_enabled(bool p_enabled) {
|
|
// Windows does not have this option, as it is always ON when setting REUSEADDR.
|
|
#ifndef WINDOWS_ENABLED
|
|
ERR_FAIL_COND(!is_open());
|
|
|
|
int par = p_enabled ? 1 : 0;
|
|
if (setsockopt(_sock, SOL_SOCKET, SO_REUSEPORT, SOCK_CBUF(&par), sizeof(int)) < 0) {
|
|
WARN_PRINT("Unable to set socket REUSEPORT option!");
|
|
}
|
|
#endif
|
|
}
|
|
|
|
bool NetSocketPosix::is_open() const {
|
|
return _sock != SOCK_EMPTY;
|
|
}
|
|
|
|
int NetSocketPosix::get_available_bytes() const {
|
|
|
|
ERR_FAIL_COND_V(_sock == SOCK_EMPTY, -1);
|
|
|
|
unsigned long len;
|
|
int ret = SOCK_IOCTL(_sock, FIONREAD, &len);
|
|
ERR_FAIL_COND_V(ret == -1, 0);
|
|
return len;
|
|
}
|
|
|
|
Ref<NetSocket> NetSocketPosix::accept(IP_Address &r_ip, uint16_t &r_port) {
|
|
|
|
Ref<NetSocket> out;
|
|
ERR_FAIL_COND_V(!is_open(), out);
|
|
|
|
struct sockaddr_storage their_addr;
|
|
socklen_t size = sizeof(their_addr);
|
|
SOCKET_TYPE fd = ::accept(_sock, (struct sockaddr *)&their_addr, &size);
|
|
ERR_FAIL_COND_V(fd == SOCK_EMPTY, out);
|
|
|
|
_set_ip_port(&their_addr, r_ip, r_port);
|
|
|
|
NetSocketPosix *ns = memnew(NetSocketPosix);
|
|
ns->_set_socket(fd, _ip_type, _is_stream);
|
|
ns->set_blocking_enabled(false);
|
|
return Ref<NetSocket>(ns);
|
|
}
|