250 lines
8 KiB
C++
250 lines
8 KiB
C++
/*************************************************************************/
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/* editor_http_server.h */
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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) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 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 WEB_EDITOR_HTTP_SERVER_H
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#define WEB_EDITOR_HTTP_SERVER_H
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#include "core/io/image_loader.h"
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#include "core/io/stream_peer_ssl.h"
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#include "core/io/tcp_server.h"
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#include "core/io/zip_io.h"
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#include "editor/editor_paths.h"
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class EditorHTTPServer : public RefCounted {
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private:
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Ref<TCPServer> server;
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HashMap<String, String> mimes;
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Ref<StreamPeerTCP> tcp;
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Ref<StreamPeerSSL> ssl;
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Ref<StreamPeer> peer;
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Ref<CryptoKey> key;
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Ref<X509Certificate> cert;
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bool use_ssl = false;
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uint64_t time = 0;
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uint8_t req_buf[4096];
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int req_pos = 0;
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void _clear_client() {
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peer = Ref<StreamPeer>();
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ssl = Ref<StreamPeerSSL>();
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tcp = Ref<StreamPeerTCP>();
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memset(req_buf, 0, sizeof(req_buf));
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time = 0;
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req_pos = 0;
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}
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void _set_internal_certs(Ref<Crypto> p_crypto) {
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const String cache_path = EditorPaths::get_singleton()->get_cache_dir();
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const String key_path = cache_path.path_join("html5_server.key");
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const String crt_path = cache_path.path_join("html5_server.crt");
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bool regen = !FileAccess::exists(key_path) || !FileAccess::exists(crt_path);
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if (!regen) {
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key = Ref<CryptoKey>(CryptoKey::create());
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cert = Ref<X509Certificate>(X509Certificate::create());
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if (key->load(key_path) != OK || cert->load(crt_path) != OK) {
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regen = true;
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}
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}
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if (regen) {
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key = p_crypto->generate_rsa(2048);
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key->save(key_path);
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cert = p_crypto->generate_self_signed_certificate(key, "CN=godot-debug.local,O=A Game Dev,C=XXA", "20140101000000", "20340101000000");
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cert->save(crt_path);
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}
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}
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public:
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EditorHTTPServer() {
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mimes["html"] = "text/html";
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mimes["js"] = "application/javascript";
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mimes["json"] = "application/json";
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mimes["pck"] = "application/octet-stream";
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mimes["png"] = "image/png";
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mimes["svg"] = "image/svg";
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mimes["wasm"] = "application/wasm";
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server.instantiate();
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stop();
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}
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void stop() {
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server->stop();
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_clear_client();
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}
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Error listen(int p_port, IPAddress p_address, bool p_use_ssl, String p_ssl_key, String p_ssl_cert) {
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use_ssl = p_use_ssl;
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if (use_ssl) {
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Ref<Crypto> crypto = Crypto::create();
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if (crypto.is_null()) {
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return ERR_UNAVAILABLE;
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}
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if (!p_ssl_key.is_empty() && !p_ssl_cert.is_empty()) {
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key = Ref<CryptoKey>(CryptoKey::create());
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Error err = key->load(p_ssl_key);
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ERR_FAIL_COND_V(err != OK, err);
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cert = Ref<X509Certificate>(X509Certificate::create());
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err = cert->load(p_ssl_cert);
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ERR_FAIL_COND_V(err != OK, err);
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} else {
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_set_internal_certs(crypto);
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}
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}
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return server->listen(p_port, p_address);
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}
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bool is_listening() const {
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return server->is_listening();
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}
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void _send_response() {
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Vector<String> psa = String((char *)req_buf).split("\r\n");
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int len = psa.size();
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ERR_FAIL_COND_MSG(len < 4, "Not enough response headers, got: " + itos(len) + ", expected >= 4.");
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Vector<String> req = psa[0].split(" ", false);
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ERR_FAIL_COND_MSG(req.size() < 2, "Invalid protocol or status code.");
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// Wrong protocol
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ERR_FAIL_COND_MSG(req[0] != "GET" || req[2] != "HTTP/1.1", "Invalid method or HTTP version.");
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const int query_index = req[1].find_char('?');
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const String path = (query_index == -1) ? req[1] : req[1].substr(0, query_index);
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const String req_file = path.get_file();
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const String req_ext = path.get_extension();
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const String cache_path = EditorPaths::get_singleton()->get_cache_dir().path_join("web");
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const String filepath = cache_path.path_join(req_file);
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if (!mimes.has(req_ext) || !FileAccess::exists(filepath)) {
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String s = "HTTP/1.1 404 Not Found\r\n";
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s += "Connection: Close\r\n";
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s += "\r\n";
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CharString cs = s.utf8();
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peer->put_data((const uint8_t *)cs.get_data(), cs.size() - 1);
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return;
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}
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const String ctype = mimes[req_ext];
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Ref<FileAccess> f = FileAccess::open(filepath, FileAccess::READ);
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ERR_FAIL_COND(f.is_null());
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String s = "HTTP/1.1 200 OK\r\n";
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s += "Connection: Close\r\n";
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s += "Content-Type: " + ctype + "\r\n";
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s += "Access-Control-Allow-Origin: *\r\n";
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s += "Cross-Origin-Opener-Policy: same-origin\r\n";
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s += "Cross-Origin-Embedder-Policy: require-corp\r\n";
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s += "Cache-Control: no-store, max-age=0\r\n";
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s += "\r\n";
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CharString cs = s.utf8();
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Error err = peer->put_data((const uint8_t *)cs.get_data(), cs.size() - 1);
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if (err != OK) {
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ERR_FAIL();
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}
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while (true) {
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uint8_t bytes[4096];
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uint64_t read = f->get_buffer(bytes, 4096);
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if (read == 0) {
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break;
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}
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err = peer->put_data(bytes, read);
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if (err != OK) {
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ERR_FAIL();
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}
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}
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}
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void poll() {
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if (!server->is_listening()) {
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return;
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}
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if (tcp.is_null()) {
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if (!server->is_connection_available()) {
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return;
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}
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tcp = server->take_connection();
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peer = tcp;
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time = OS::get_singleton()->get_ticks_usec();
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}
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if (OS::get_singleton()->get_ticks_usec() - time > 1000000) {
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_clear_client();
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return;
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}
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if (tcp->get_status() != StreamPeerTCP::STATUS_CONNECTED) {
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return;
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}
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if (use_ssl) {
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if (ssl.is_null()) {
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ssl = Ref<StreamPeerSSL>(StreamPeerSSL::create());
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peer = ssl;
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ssl->set_blocking_handshake_enabled(false);
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if (ssl->accept_stream(tcp, key, cert) != OK) {
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_clear_client();
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return;
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}
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}
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ssl->poll();
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if (ssl->get_status() == StreamPeerSSL::STATUS_HANDSHAKING) {
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// Still handshaking, keep waiting.
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return;
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}
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if (ssl->get_status() != StreamPeerSSL::STATUS_CONNECTED) {
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_clear_client();
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return;
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}
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}
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while (true) {
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char *r = (char *)req_buf;
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int l = req_pos - 1;
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if (l > 3 && r[l] == '\n' && r[l - 1] == '\r' && r[l - 2] == '\n' && r[l - 3] == '\r') {
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_send_response();
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_clear_client();
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return;
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}
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int read = 0;
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ERR_FAIL_COND(req_pos >= 4096);
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Error err = peer->get_partial_data(&req_buf[req_pos], 1, read);
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if (err != OK) {
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// Got an error
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_clear_client();
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return;
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} else if (read != 1) {
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// Busy, wait next poll
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return;
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}
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req_pos += read;
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}
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}
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};
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#endif // WEB_EDITOR_HTTP_SERVER_H
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