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