287 lines
9.8 KiB
C++
287 lines
9.8 KiB
C++
/*************************************************************************/
|
|
/* lws_server.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2019 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. */
|
|
/*************************************************************************/
|
|
|
|
#ifndef JAVASCRIPT_ENABLED
|
|
|
|
#include "wsl_server.h"
|
|
#include "core/os/os.h"
|
|
#include "core/project_settings.h"
|
|
|
|
WSLServer::PendingPeer::PendingPeer() {
|
|
time = 0;
|
|
has_request = false;
|
|
response_sent = 0;
|
|
req_pos = 0;
|
|
memset(req_buf, 0, sizeof(req_buf));
|
|
}
|
|
|
|
bool WSLServer::PendingPeer::_parse_request(const PoolStringArray p_protocols) {
|
|
Vector<String> psa = String((char *)req_buf).split("\r\n");
|
|
int len = psa.size();
|
|
ERR_FAIL_COND_V_MSG(len < 4, false, "Not enough response headers, got: " + itos(len) + ", expected >= 4.");
|
|
|
|
Vector<String> req = psa[0].split(" ", false);
|
|
ERR_FAIL_COND_V_MSG(req.size() < 2, false, "Invalid protocol or status code.");
|
|
|
|
// Wrong protocol
|
|
ERR_FAIL_COND_V_MSG(req[0] != "GET" || req[2] != "HTTP/1.1", false, "Invalid method or HTTP version.");
|
|
|
|
Map<String, String> headers;
|
|
for (int i = 1; i < len; i++) {
|
|
Vector<String> header = psa[i].split(":", false, 1);
|
|
ERR_FAIL_COND_V_MSG(header.size() != 2, false, "Invalid header -> " + psa[i]);
|
|
String name = header[0].to_lower();
|
|
String value = header[1].strip_edges();
|
|
if (headers.has(name))
|
|
headers[name] += "," + value;
|
|
else
|
|
headers[name] = value;
|
|
}
|
|
#define _WLS_CHECK(NAME, VALUE) \
|
|
ERR_EXPLAIN("Missing or invalid header '" + String(NAME) + "'. Expected value '" + VALUE + "'"); \
|
|
ERR_FAIL_COND_V(!headers.has(NAME) || headers[NAME].to_lower() != VALUE, false);
|
|
#define _WLS_CHECK_EX(NAME) \
|
|
ERR_EXPLAIN("Missing header '" + String(NAME) + "'."); \
|
|
ERR_FAIL_COND_V(!headers.has(NAME), false);
|
|
_WLS_CHECK("upgrade", "websocket");
|
|
_WLS_CHECK("sec-websocket-version", "13");
|
|
_WLS_CHECK_EX("sec-websocket-key");
|
|
_WLS_CHECK_EX("connection");
|
|
#undef _WLS_CHECK_EX
|
|
#undef _WLS_CHECK
|
|
key = headers["sec-websocket-key"];
|
|
if (headers.has("sec-websocket-protocol")) {
|
|
Vector<String> protos = headers["sec-websocket-protocol"].split(",");
|
|
for (int i = 0; i < protos.size(); i++) {
|
|
// Check if we have the given protocol
|
|
for (int j = 0; j < p_protocols.size(); j++) {
|
|
if (protos[i] != p_protocols[j])
|
|
continue;
|
|
protocol = protos[i];
|
|
break;
|
|
}
|
|
// Found a protocol
|
|
if (protocol != "")
|
|
break;
|
|
}
|
|
if (protocol == "") // Invalid protocol(s) requested
|
|
return false;
|
|
} else if (p_protocols.size() > 0) // No protocol requested, but we need one
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
Error WSLServer::PendingPeer::do_handshake(PoolStringArray p_protocols) {
|
|
if (OS::get_singleton()->get_ticks_msec() - time > WSL_SERVER_TIMEOUT)
|
|
return ERR_TIMEOUT;
|
|
if (!has_request) {
|
|
int read = 0;
|
|
while (true) {
|
|
ERR_FAIL_COND_V_MSG(req_pos >= WSL_MAX_HEADER_SIZE, ERR_OUT_OF_MEMORY, "Response headers too big.");
|
|
Error err = connection->get_partial_data(&req_buf[req_pos], 1, read);
|
|
if (err != OK) // Got an error
|
|
return FAILED;
|
|
else if (read != 1) // Busy, wait next poll
|
|
return ERR_BUSY;
|
|
char *r = (char *)req_buf;
|
|
int l = req_pos;
|
|
if (l > 3 && r[l] == '\n' && r[l - 1] == '\r' && r[l - 2] == '\n' && r[l - 3] == '\r') {
|
|
r[l - 3] = '\0';
|
|
if (!_parse_request(p_protocols)) {
|
|
return FAILED;
|
|
}
|
|
String s = "HTTP/1.1 101 Switching Protocols\r\n";
|
|
s += "Upgrade: websocket\r\n";
|
|
s += "Connection: Upgrade\r\n";
|
|
s += "Sec-WebSocket-Accept: " + WSLPeer::compute_key_response(key) + "\r\n";
|
|
if (protocol != "")
|
|
s += "Sec-WebSocket-Protocol: " + protocol + "\r\n";
|
|
s += "\r\n";
|
|
response = s.utf8();
|
|
has_request = true;
|
|
break;
|
|
}
|
|
req_pos += 1;
|
|
}
|
|
}
|
|
if (has_request && response_sent < response.size() - 1) {
|
|
int sent = 0;
|
|
Error err = connection->put_partial_data((const uint8_t *)response.get_data() + response_sent, response.size() - response_sent - 1, sent);
|
|
if (err != OK) {
|
|
return err;
|
|
}
|
|
response_sent += sent;
|
|
}
|
|
if (response_sent < response.size() - 1)
|
|
return ERR_BUSY;
|
|
return OK;
|
|
}
|
|
|
|
Error WSLServer::listen(int p_port, PoolVector<String> p_protocols, bool gd_mp_api) {
|
|
ERR_FAIL_COND_V(is_listening(), ERR_ALREADY_IN_USE);
|
|
|
|
_is_multiplayer = gd_mp_api;
|
|
_protocols = p_protocols;
|
|
_server->listen(p_port);
|
|
|
|
return OK;
|
|
}
|
|
|
|
void WSLServer::poll() {
|
|
|
|
List<int> remove_ids;
|
|
for (Map<int, Ref<WebSocketPeer> >::Element *E = _peer_map.front(); E; E = E->next()) {
|
|
Ref<WSLPeer> peer = (WSLPeer *)E->get().ptr();
|
|
peer->poll();
|
|
if (!peer->is_connected_to_host()) {
|
|
_on_disconnect(E->key(), peer->close_code != -1);
|
|
remove_ids.push_back(E->key());
|
|
}
|
|
}
|
|
for (List<int>::Element *E = remove_ids.front(); E; E = E->next()) {
|
|
_peer_map.erase(E->get());
|
|
}
|
|
remove_ids.clear();
|
|
|
|
List<Ref<PendingPeer> > remove_peers;
|
|
for (List<Ref<PendingPeer> >::Element *E = _pending.front(); E; E = E->next()) {
|
|
Ref<PendingPeer> ppeer = E->get();
|
|
Error err = ppeer->do_handshake(_protocols);
|
|
if (err == ERR_BUSY) {
|
|
continue;
|
|
} else if (err != OK) {
|
|
remove_peers.push_back(ppeer);
|
|
continue;
|
|
}
|
|
// Creating new peer
|
|
int32_t id = _gen_unique_id();
|
|
|
|
WSLPeer::PeerData *data = memnew(struct WSLPeer::PeerData);
|
|
data->obj = this;
|
|
data->conn = ppeer->connection;
|
|
data->is_server = true;
|
|
data->id = id;
|
|
|
|
Ref<WSLPeer> ws_peer = memnew(WSLPeer);
|
|
ws_peer->make_context(data, _in_buf_size, _in_pkt_size, _out_buf_size, _out_pkt_size);
|
|
|
|
_peer_map[id] = ws_peer;
|
|
remove_peers.push_back(ppeer);
|
|
_on_connect(id, ppeer->protocol);
|
|
}
|
|
for (List<Ref<PendingPeer> >::Element *E = remove_peers.front(); E; E = E->next()) {
|
|
_pending.erase(E->get());
|
|
}
|
|
remove_peers.clear();
|
|
|
|
if (!_server->is_listening())
|
|
return;
|
|
|
|
while (_server->is_connection_available()) {
|
|
Ref<StreamPeer> conn = _server->take_connection();
|
|
if (is_refusing_new_connections())
|
|
continue; // Conn will go out-of-scope and be closed.
|
|
|
|
Ref<PendingPeer> peer = memnew(PendingPeer);
|
|
peer->connection = conn;
|
|
peer->time = OS::get_singleton()->get_ticks_msec();
|
|
_pending.push_back(peer);
|
|
}
|
|
}
|
|
|
|
bool WSLServer::is_listening() const {
|
|
return _server->is_listening();
|
|
}
|
|
|
|
int WSLServer::get_max_packet_size() const {
|
|
return (1 << _out_buf_size) - PROTO_SIZE;
|
|
}
|
|
|
|
void WSLServer::stop() {
|
|
_server->stop();
|
|
for (Map<int, Ref<WebSocketPeer> >::Element *E = _peer_map.front(); E; E = E->next()) {
|
|
Ref<WSLPeer> peer = (WSLPeer *)E->get().ptr();
|
|
peer->close_now();
|
|
}
|
|
_pending.clear();
|
|
_peer_map.clear();
|
|
}
|
|
|
|
bool WSLServer::has_peer(int p_id) const {
|
|
return _peer_map.has(p_id);
|
|
}
|
|
|
|
Ref<WebSocketPeer> WSLServer::get_peer(int p_id) const {
|
|
ERR_FAIL_COND_V(!has_peer(p_id), NULL);
|
|
return _peer_map[p_id];
|
|
}
|
|
|
|
IP_Address WSLServer::get_peer_address(int p_peer_id) const {
|
|
ERR_FAIL_COND_V(!has_peer(p_peer_id), IP_Address());
|
|
|
|
return _peer_map[p_peer_id]->get_connected_host();
|
|
}
|
|
|
|
int WSLServer::get_peer_port(int p_peer_id) const {
|
|
ERR_FAIL_COND_V(!has_peer(p_peer_id), 0);
|
|
|
|
return _peer_map[p_peer_id]->get_connected_port();
|
|
}
|
|
|
|
void WSLServer::disconnect_peer(int p_peer_id, int p_code, String p_reason) {
|
|
ERR_FAIL_COND(!has_peer(p_peer_id));
|
|
|
|
get_peer(p_peer_id)->close(p_code, p_reason);
|
|
}
|
|
|
|
Error WSLServer::set_buffers(int p_in_buffer, int p_in_packets, int p_out_buffer, int p_out_packets) {
|
|
ERR_FAIL_COND_V_MSG(_server->is_listening(), FAILED, "Buffers sizes can only be set before listening or connecting.");
|
|
|
|
_in_buf_size = nearest_shift(p_in_buffer - 1) + 10;
|
|
_in_pkt_size = nearest_shift(p_in_packets - 1);
|
|
_out_buf_size = nearest_shift(p_out_buffer - 1) + 10;
|
|
_out_pkt_size = nearest_shift(p_out_packets - 1);
|
|
return OK;
|
|
}
|
|
|
|
WSLServer::WSLServer() {
|
|
_in_buf_size = nearest_shift((int)GLOBAL_GET(WSS_IN_BUF) - 1) + 10;
|
|
_in_pkt_size = nearest_shift((int)GLOBAL_GET(WSS_IN_PKT) - 1);
|
|
_out_buf_size = nearest_shift((int)GLOBAL_GET(WSS_OUT_BUF) - 1) + 10;
|
|
_out_pkt_size = nearest_shift((int)GLOBAL_GET(WSS_OUT_PKT) - 1);
|
|
_server.instance();
|
|
}
|
|
|
|
WSLServer::~WSLServer() {
|
|
stop();
|
|
}
|
|
|
|
#endif // JAVASCRIPT_ENABLED
|