235 lines
7.0 KiB
C++
235 lines
7.0 KiB
C++
/*************************************************************************/
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/* lws_client.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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#ifndef JAVASCRIPT_ENABLED
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#include "lws_client.h"
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#include "core/io/ip.h"
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#include "core/io/stream_peer_ssl.h"
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#include "core/project_settings.h"
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#include "tls/mbedtls/wrapper/include/openssl/ssl.h"
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Error LWSClient::connect_to_host(String p_host, String p_path, uint16_t p_port, bool p_ssl, PoolVector<String> p_protocols) {
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ERR_FAIL_COND_V(context != NULL, FAILED);
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IP_Address addr;
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if (!p_host.is_valid_ip_address()) {
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addr = IP::get_singleton()->resolve_hostname(p_host);
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} else {
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addr = p_host;
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}
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ERR_FAIL_COND_V(!addr.is_valid(), ERR_INVALID_PARAMETER);
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// Prepare protocols
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_lws_make_protocols(this, &LWSClient::_lws_gd_callback, p_protocols, &_lws_ref);
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// Init lws client
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struct lws_context_creation_info info;
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struct lws_client_connect_info i;
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memset(&i, 0, sizeof i);
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memset(&info, 0, sizeof info);
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info.port = CONTEXT_PORT_NO_LISTEN;
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info.protocols = _lws_ref->lws_structs;
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info.gid = -1;
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info.uid = -1;
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//info.ws_ping_pong_interval = 5;
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info.user = _lws_ref;
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#if defined(LWS_OPENSSL_SUPPORT)
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info.options |= LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT;
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#endif
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context = lws_create_context(&info);
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if (context == NULL) {
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_lws_free_ref(_lws_ref);
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_lws_ref = NULL;
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ERR_EXPLAIN("Unable to create lws context");
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ERR_FAIL_V(FAILED);
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}
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i.context = context;
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if (p_protocols.size() > 0)
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i.protocol = _lws_ref->lws_names;
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else
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i.protocol = NULL;
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if (p_ssl) {
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i.ssl_connection = LCCSCF_USE_SSL;
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if (!verify_ssl)
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i.ssl_connection |= LCCSCF_ALLOW_SELFSIGNED;
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} else {
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i.ssl_connection = 0;
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}
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// These CharStrings needs to survive till we call lws_client_connect_via_info
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CharString addr_ch = ((String)addr).ascii();
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CharString host_ch = p_host.utf8();
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CharString path_ch = p_path.utf8();
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i.address = addr_ch.get_data();
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i.host = host_ch.get_data();
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i.path = path_ch.get_data();
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i.port = p_port;
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lws_client_connect_via_info(&i);
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return OK;
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};
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int LWSClient::get_max_packet_size() const {
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return (1 << _out_buf_size) - PROTO_SIZE;
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}
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void LWSClient::poll() {
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_lws_poll();
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}
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int LWSClient::_handle_cb(struct lws *wsi, enum lws_callback_reasons reason, void *user, void *in, size_t len) {
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Ref<LWSPeer> peer = static_cast<Ref<LWSPeer> >(_peer);
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LWSPeer::PeerData *peer_data = (LWSPeer::PeerData *)user;
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switch (reason) {
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case LWS_CALLBACK_OPENSSL_LOAD_EXTRA_CLIENT_VERIFY_CERTS: {
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PoolByteArray arr = StreamPeerSSL::get_project_cert_array();
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if (arr.size() > 0)
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SSL_CTX_add_client_CA((SSL_CTX *)user, d2i_X509(NULL, &arr.read()[0], arr.size()));
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else if (verify_ssl)
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WARN_PRINTS("No CA cert specified in project settings, SSL will not work");
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} break;
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case LWS_CALLBACK_CLIENT_ESTABLISHED:
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peer->set_wsi(wsi, _in_buf_size, _in_pkt_size, _out_buf_size, _out_pkt_size);
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peer_data->peer_id = 0;
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peer_data->force_close = false;
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peer_data->clean_close = false;
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_on_connect(lws_get_protocol(wsi)->name);
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break;
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case LWS_CALLBACK_CLIENT_CONNECTION_ERROR:
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_on_error();
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destroy_context();
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return -1; // We should close the connection (would probably happen anyway)
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case LWS_CALLBACK_WS_PEER_INITIATED_CLOSE: {
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int code;
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String reason = peer->get_close_reason(in, len, code);
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peer_data->clean_close = true;
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_on_close_request(code, reason);
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return 0;
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}
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case LWS_CALLBACK_CLIENT_CLOSED:
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peer->close();
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destroy_context();
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_on_disconnect(peer_data->clean_close);
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return 0; // We can end here
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case LWS_CALLBACK_CLIENT_RECEIVE:
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peer->read_wsi(in, len);
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if (peer->get_available_packet_count() > 0)
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_on_peer_packet();
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break;
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case LWS_CALLBACK_CLIENT_WRITEABLE:
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if (peer_data->force_close) {
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peer->send_close_status(wsi);
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return -1;
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}
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peer->write_wsi();
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break;
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default:
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break;
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}
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return 0;
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}
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Ref<WebSocketPeer> LWSClient::get_peer(int p_peer_id) const {
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return _peer;
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}
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NetworkedMultiplayerPeer::ConnectionStatus LWSClient::get_connection_status() const {
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if (context == NULL)
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return CONNECTION_DISCONNECTED;
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if (_peer->is_connected_to_host())
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return CONNECTION_CONNECTED;
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return CONNECTION_CONNECTING;
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}
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void LWSClient::disconnect_from_host(int p_code, String p_reason) {
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if (context == NULL)
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return;
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_peer->close(p_code, p_reason);
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};
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IP_Address LWSClient::get_connected_host() const {
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return IP_Address();
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};
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uint16_t LWSClient::get_connected_port() const {
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return 1025;
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};
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LWSClient::LWSClient() {
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_in_buf_size = nearest_shift((int)GLOBAL_GET(WSC_IN_BUF) - 1) + 10;
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_in_pkt_size = nearest_shift((int)GLOBAL_GET(WSC_IN_PKT) - 1);
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_out_buf_size = nearest_shift((int)GLOBAL_GET(WSC_OUT_BUF) - 1) + 10;
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_out_pkt_size = nearest_shift((int)GLOBAL_GET(WSC_OUT_PKT) - 1);
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context = NULL;
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_lws_ref = NULL;
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_peer = Ref<LWSPeer>(memnew(LWSPeer));
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};
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LWSClient::~LWSClient() {
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invalidate_lws_ref(); // We do not want any more callback
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disconnect_from_host();
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destroy_context();
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_peer = Ref<LWSPeer>();
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};
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#endif // JAVASCRIPT_ENABLED
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