400 lines
9 KiB
C++
400 lines
9 KiB
C++
/*************************************************************************/
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/* stream_peer_tcp_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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#ifdef UNIX_ENABLED
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#include "stream_peer_tcp_posix.h"
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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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#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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#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(OSX_ENABLED) || defined(IPHONE_ENABLED)
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#define MSG_NOSIGNAL SO_NOSIGPIPE
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#endif
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#include "drivers/unix/socket_helpers.h"
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StreamPeerTCP *StreamPeerTCPPosix::_create() {
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return memnew(StreamPeerTCPPosix);
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};
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void StreamPeerTCPPosix::make_default() {
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StreamPeerTCP::_create = StreamPeerTCPPosix::_create;
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};
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Error StreamPeerTCPPosix::_block(int p_sockfd, bool p_read, bool p_write) const {
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struct pollfd pfd;
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pfd.fd = p_sockfd;
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pfd.events = 0;
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if (p_read)
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pfd.events |= POLLIN;
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if (p_write)
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pfd.events |= POLLOUT;
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pfd.revents = 0;
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int ret = poll(&pfd, 1, -1);
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return ret < 0 ? FAILED : OK;
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};
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Error StreamPeerTCPPosix::_poll_connection() const {
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ERR_FAIL_COND_V(status != STATUS_CONNECTING || sockfd == -1, FAILED);
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struct sockaddr_storage their_addr;
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size_t addr_size = _set_sockaddr(&their_addr, peer_host, peer_port, sock_type);
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if (::connect(sockfd, (struct sockaddr *)&their_addr, addr_size) == -1) {
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if (errno == EISCONN) {
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status = STATUS_CONNECTED;
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return OK;
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};
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if (errno == EINPROGRESS || errno == EALREADY) {
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return OK;
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}
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status = STATUS_ERROR;
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return ERR_CONNECTION_ERROR;
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} else {
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status = STATUS_CONNECTED;
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return OK;
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};
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return OK;
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};
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void StreamPeerTCPPosix::set_socket(int p_sockfd, IP_Address p_host, int p_port, IP::Type p_sock_type) {
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sock_type = p_sock_type;
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sockfd = p_sockfd;
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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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status = STATUS_CONNECTING;
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peer_host = p_host;
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peer_port = p_port;
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};
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Error StreamPeerTCPPosix::connect_to_host(const IP_Address &p_host, uint16_t p_port) {
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ERR_FAIL_COND_V(!p_host.is_valid(), ERR_INVALID_PARAMETER);
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sock_type = p_host.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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if (sockfd == -1) {
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ERR_PRINT("Socket creation failed!");
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disconnect_from_host();
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//perror("socket");
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return FAILED;
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};
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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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struct sockaddr_storage their_addr;
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size_t addr_size = _set_sockaddr(&their_addr, p_host, p_port, sock_type);
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errno = 0;
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if (::connect(sockfd, (struct sockaddr *)&their_addr, addr_size) == -1 && errno != EINPROGRESS) {
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ERR_PRINT("Connection to remote host failed!");
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disconnect_from_host();
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return FAILED;
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};
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if (errno == EINPROGRESS) {
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status = STATUS_CONNECTING;
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} else {
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status = STATUS_CONNECTED;
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};
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peer_host = p_host;
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peer_port = p_port;
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return OK;
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};
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Error StreamPeerTCPPosix::write(const uint8_t *p_data, int p_bytes, int &r_sent, bool p_block) {
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if (status == STATUS_NONE || status == STATUS_ERROR) {
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return FAILED;
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};
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if (status != STATUS_CONNECTED) {
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if (_poll_connection() != OK) {
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return FAILED;
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};
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if (status != STATUS_CONNECTED) {
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r_sent = 0;
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return OK;
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};
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};
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int data_to_send = p_bytes;
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const uint8_t *offset = p_data;
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if (sockfd == -1) return FAILED;
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errno = 0;
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int total_sent = 0;
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while (data_to_send) {
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int sent_amount = send(sockfd, offset, data_to_send, MSG_NOSIGNAL);
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//printf("Sent TCP data of %d bytes, errno %d\n", sent_amount, errno);
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if (sent_amount == -1) {
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if (errno != EAGAIN) {
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perror("Nothing sent");
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disconnect_from_host();
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ERR_PRINT("Server disconnected!\n");
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return FAILED;
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};
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if (!p_block) {
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r_sent = total_sent;
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return OK;
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};
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_block(sockfd, false, true);
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} else {
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data_to_send -= sent_amount;
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offset += sent_amount;
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total_sent += sent_amount;
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};
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}
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r_sent = total_sent;
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return OK;
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};
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Error StreamPeerTCPPosix::read(uint8_t *p_buffer, int p_bytes, int &r_received, bool p_block) {
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if (!is_connected_to_host()) {
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return FAILED;
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};
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if (status == STATUS_CONNECTING) {
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if (_poll_connection() != OK) {
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return FAILED;
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};
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if (status != STATUS_CONNECTED) {
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r_received = 0;
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return OK;
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};
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};
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int to_read = p_bytes;
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int total_read = 0;
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errno = 0;
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while (to_read) {
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int read = recv(sockfd, p_buffer + total_read, to_read, 0);
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if (read == -1) {
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if (errno != EAGAIN) {
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perror("Nothing read");
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disconnect_from_host();
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ERR_PRINT("Server disconnected!\n");
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return FAILED;
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};
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if (!p_block) {
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r_received = total_read;
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return OK;
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};
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_block(sockfd, true, false);
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} else if (read == 0) {
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sockfd = -1;
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status = STATUS_NONE;
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peer_port = 0;
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peer_host = IP_Address();
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return ERR_FILE_EOF;
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} else {
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to_read -= read;
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total_read += read;
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};
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};
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r_received = total_read;
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return OK;
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};
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void StreamPeerTCPPosix::set_nodelay(bool p_enabled) {
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ERR_FAIL_COND(!is_connected_to_host());
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int flag = p_enabled ? 1 : 0;
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setsockopt(sockfd, IPPROTO_TCP, TCP_NODELAY, (char *)&flag, sizeof(int));
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}
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bool StreamPeerTCPPosix::is_connected_to_host() const {
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if (status == STATUS_NONE || status == STATUS_ERROR) {
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return false;
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};
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if (status != STATUS_CONNECTED) {
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return true;
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};
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return (sockfd != -1);
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};
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StreamPeerTCP::Status StreamPeerTCPPosix::get_status() const {
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if (status == STATUS_CONNECTING) {
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_poll_connection();
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};
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return status;
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};
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void StreamPeerTCPPosix::disconnect_from_host() {
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if (sockfd != -1)
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close(sockfd);
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sock_type = IP::TYPE_NONE;
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sockfd = -1;
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status = STATUS_NONE;
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peer_port = 0;
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peer_host = IP_Address();
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};
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Error StreamPeerTCPPosix::put_data(const uint8_t *p_data, int p_bytes) {
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int total;
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return write(p_data, p_bytes, total, true);
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};
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Error StreamPeerTCPPosix::put_partial_data(const uint8_t *p_data, int p_bytes, int &r_sent) {
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return write(p_data, p_bytes, r_sent, false);
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};
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Error StreamPeerTCPPosix::get_data(uint8_t *p_buffer, int p_bytes) {
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int total;
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return read(p_buffer, p_bytes, total, true);
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};
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Error StreamPeerTCPPosix::get_partial_data(uint8_t *p_buffer, int p_bytes, int &r_received) {
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return read(p_buffer, p_bytes, r_received, false);
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};
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int StreamPeerTCPPosix::get_available_bytes() const {
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unsigned long len;
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int ret = ioctl(sockfd, FIONREAD, &len);
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ERR_FAIL_COND_V(ret == -1, 0)
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return len;
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}
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IP_Address StreamPeerTCPPosix::get_connected_host() const {
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return peer_host;
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};
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uint16_t StreamPeerTCPPosix::get_connected_port() const {
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return peer_port;
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};
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StreamPeerTCPPosix::StreamPeerTCPPosix() {
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sock_type = IP::TYPE_NONE;
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sockfd = -1;
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status = STATUS_NONE;
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peer_port = 0;
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};
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StreamPeerTCPPosix::~StreamPeerTCPPosix() {
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disconnect_from_host();
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};
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#endif
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