diff options
Diffstat (limited to 'modules/websocket/lws_client.cpp')
| -rw-r--r-- | modules/websocket/lws_client.cpp | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/modules/websocket/lws_client.cpp b/modules/websocket/lws_client.cpp new file mode 100644 index 0000000000..2220c9adf2 --- /dev/null +++ b/modules/websocket/lws_client.cpp @@ -0,0 +1,221 @@ +/*************************************************************************/ +/* lws_client.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2018 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" + +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 + if (p_protocols.size() == 0) // default to binary protocol + p_protocols.append("binary"); + _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); + } + + char abuf[1024]; + char hbuf[1024]; + char pbuf[2048]; + String addr_str = (String)addr; + strncpy(abuf, addr_str.ascii().get_data(), 1024); + strncpy(hbuf, p_host.utf8().get_data(), 1024); + strncpy(pbuf, p_path.utf8().get_data(), 2048); + + i.context = context; + i.protocol = _lws_ref->lws_names; + i.address = abuf; + i.host = hbuf; + i.path = pbuf; + i.port = p_port; + + if (p_ssl) { + i.ssl_connection = LCCSCF_USE_SSL; + if (!verify_ssl) + i.ssl_connection |= LCCSCF_ALLOW_SELFSIGNED; + } else { + i.ssl_connection = 0; + } + + lws_client_connect_via_info(&i); + return OK; +}; + +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); + peer_data->peer_id = 0; + peer_data->in_size = 0; + peer_data->in_count = 0; + peer_data->out_count = 0; + peer_data->rbw.resize(16); + peer_data->rbr.resize(16); + peer_data->force_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_CLOSED: + peer_data->in_count = 0; + peer_data->out_count = 0; + peer_data->rbw.resize(0); + peer_data->rbr.resize(0); + peer->close(); + destroy_context(); + _on_disconnect(); + 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) + 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() { + + if (context == NULL) + return; + + _peer->close(); + destroy_context(); +}; + +IP_Address LWSClient::get_connected_host() const { + + return IP_Address(); +}; + +uint16_t LWSClient::get_connected_port() const { + + return 1025; +}; + +LWSClient::LWSClient() { + 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(); + _peer = Ref<LWSPeer>(); +}; + +#endif // JAVASCRIPT_ENABLED |