Merge pull request #50771 from naithar/feature/platform-export-refactoring-4.0

1 files changed, 254 insertions, 0 deletions

diff --git a/platform/javascript/export/export_server.h b/platform/javascript/export/export_server.h
new file mode 100644
index 0000000000..87cbdcab47
--- /dev/null
+++ b/platform/javascript/export/export_server.h
@@ -0,0 +1,254 @@
+/*************************************************************************/
+/*  export_server.h                                                      */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2021 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_EXPORT_SERVER_H
+#define JAVASCRIPT_EXPORT_SERVER_H
+
+#include "core/io/image_loader.h"
+#include "core/io/stream_peer_ssl.h"
+#include "core/io/tcp_server.h"
+#include "core/io/zip_io.h"
+#include "editor/editor_export.h"
+#include "editor/editor_node.h"
+
+class EditorHTTPServer : public RefCounted {
+private:
+	Ref<TCPServer> server;
+	Map<String, String> mimes;
+	Ref<StreamPeerTCP> tcp;
+	Ref<StreamPeerSSL> ssl;
+	Ref<StreamPeer> peer;
+	Ref<CryptoKey> key;
+	Ref<X509Certificate> cert;
+	bool use_ssl = false;
+	uint64_t time = 0;
+	uint8_t req_buf[4096];
+	int req_pos = 0;
+
+	void _clear_client() {
+		peer = Ref<StreamPeer>();
+		ssl = Ref<StreamPeerSSL>();
+		tcp = Ref<StreamPeerTCP>();
+		memset(req_buf, 0, sizeof(req_buf));
+		time = 0;
+		req_pos = 0;
+	}
+
+	void _set_internal_certs(Ref<Crypto> p_crypto) {
+		const String cache_path = EditorPaths::get_singleton()->get_cache_dir();
+		const String key_path = cache_path.plus_file("html5_server.key");
+		const String crt_path = cache_path.plus_file("html5_server.crt");
+		bool regen = !FileAccess::exists(key_path) || !FileAccess::exists(crt_path);
+		if (!regen) {
+			key = Ref<CryptoKey>(CryptoKey::create());
+			cert = Ref<X509Certificate>(X509Certificate::create());
+			if (key->load(key_path) != OK || cert->load(crt_path) != OK) {
+				regen = true;
+			}
+		}
+		if (regen) {
+			key = p_crypto->generate_rsa(2048);
+			key->save(key_path);
+			cert = p_crypto->generate_self_signed_certificate(key, "CN=godot-debug.local,O=A Game Dev,C=XXA", "20140101000000", "20340101000000");
+			cert->save(crt_path);
+		}
+	}
+
+public:
+	EditorHTTPServer() {
+		mimes["html"] = "text/html";
+		mimes["js"] = "application/javascript";
+		mimes["json"] = "application/json";
+		mimes["pck"] = "application/octet-stream";
+		mimes["png"] = "image/png";
+		mimes["svg"] = "image/svg";
+		mimes["wasm"] = "application/wasm";
+		server.instantiate();
+		stop();
+	}
+
+	void stop() {
+		server->stop();
+		_clear_client();
+	}
+
+	Error listen(int p_port, IPAddress p_address, bool p_use_ssl, String p_ssl_key, String p_ssl_cert) {
+		use_ssl = p_use_ssl;
+		if (use_ssl) {
+			Ref<Crypto> crypto = Crypto::create();
+			if (crypto.is_null()) {
+				return ERR_UNAVAILABLE;
+			}
+			if (!p_ssl_key.is_empty() && !p_ssl_cert.is_empty()) {
+				key = Ref<CryptoKey>(CryptoKey::create());
+				Error err = key->load(p_ssl_key);
+				ERR_FAIL_COND_V(err != OK, err);
+				cert = Ref<X509Certificate>(X509Certificate::create());
+				err = cert->load(p_ssl_cert);
+				ERR_FAIL_COND_V(err != OK, err);
+			} else {
+				_set_internal_certs(crypto);
+			}
+		}
+		return server->listen(p_port, p_address);
+	}
+
+	bool is_listening() const {
+		return server->is_listening();
+	}
+
+	void _send_response() {
+		Vector<String> psa = String((char *)req_buf).split("\r\n");
+		int len = psa.size();
+		ERR_FAIL_COND_MSG(len < 4, "Not enough response headers, got: " + itos(len) + ", expected >= 4.");
+
+		Vector<String> req = psa[0].split(" ", false);
+		ERR_FAIL_COND_MSG(req.size() < 2, "Invalid protocol or status code.");
+
+		// Wrong protocol
+		ERR_FAIL_COND_MSG(req[0] != "GET" || req[2] != "HTTP/1.1", "Invalid method or HTTP version.");
+
+		const int query_index = req[1].find_char('?');
+		const String path = (query_index == -1) ? req[1] : req[1].substr(0, query_index);
+
+		const String req_file = path.get_file();
+		const String req_ext = path.get_extension();
+		const String cache_path = EditorPaths::get_singleton()->get_cache_dir().plus_file("web");
+		const String filepath = cache_path.plus_file(req_file);
+
+		if (!mimes.has(req_ext) || !FileAccess::exists(filepath)) {
+			String s = "HTTP/1.1 404 Not Found\r\n";
+			s += "Connection: Close\r\n";
+			s += "\r\n";
+			CharString cs = s.utf8();
+			peer->put_data((const uint8_t *)cs.get_data(), cs.size() - 1);
+			return;
+		}
+		const String ctype = mimes[req_ext];
+
+		FileAccess *f = FileAccess::open(filepath, FileAccess::READ);
+		ERR_FAIL_COND(!f);
+		String s = "HTTP/1.1 200 OK\r\n";
+		s += "Connection: Close\r\n";
+		s += "Content-Type: " + ctype + "\r\n";
+		s += "Access-Control-Allow-Origin: *\r\n";
+		s += "Cross-Origin-Opener-Policy: same-origin\r\n";
+		s += "Cross-Origin-Embedder-Policy: require-corp\r\n";
+		s += "Cache-Control: no-store, max-age=0\r\n";
+		s += "\r\n";
+		CharString cs = s.utf8();
+		Error err = peer->put_data((const uint8_t *)cs.get_data(), cs.size() - 1);
+		if (err != OK) {
+			memdelete(f);
+			ERR_FAIL();
+		}
+
+		while (true) {
+			uint8_t bytes[4096];
+			uint64_t read = f->get_buffer(bytes, 4096);
+			if (read == 0) {
+				break;
+			}
+			err = peer->put_data(bytes, read);
+			if (err != OK) {
+				memdelete(f);
+				ERR_FAIL();
+			}
+		}
+		memdelete(f);
+	}
+
+	void poll() {
+		if (!server->is_listening()) {
+			return;
+		}
+		if (tcp.is_null()) {
+			if (!server->is_connection_available()) {
+				return;
+			}
+			tcp = server->take_connection();
+			peer = tcp;
+			time = OS::get_singleton()->get_ticks_usec();
+		}
+		if (OS::get_singleton()->get_ticks_usec() - time > 1000000) {
+			_clear_client();
+			return;
+		}
+		if (tcp->get_status() != StreamPeerTCP::STATUS_CONNECTED) {
+			return;
+		}
+
+		if (use_ssl) {
+			if (ssl.is_null()) {
+				ssl = Ref<StreamPeerSSL>(StreamPeerSSL::create());
+				peer = ssl;
+				ssl->set_blocking_handshake_enabled(false);
+				if (ssl->accept_stream(tcp, key, cert) != OK) {
+					_clear_client();
+					return;
+				}
+			}
+			ssl->poll();
+			if (ssl->get_status() == StreamPeerSSL::STATUS_HANDSHAKING) {
+				// Still handshaking, keep waiting.
+				return;
+			}
+			if (ssl->get_status() != StreamPeerSSL::STATUS_CONNECTED) {
+				_clear_client();
+				return;
+			}
+		}
+
+		while (true) {
+			char *r = (char *)req_buf;
+			int l = req_pos - 1;
+			if (l > 3 && r[l] == '\n' && r[l - 1] == '\r' && r[l - 2] == '\n' && r[l - 3] == '\r') {
+				_send_response();
+				_clear_client();
+				return;
+			}
+
+			int read = 0;
+			ERR_FAIL_COND(req_pos >= 4096);
+			Error err = peer->get_partial_data(&req_buf[req_pos], 1, read);
+			if (err != OK) {
+				// Got an error
+				_clear_client();
+				return;
+			} else if (read != 1) {
+				// Busy, wait next poll
+				return;
+			}
+			req_pos += read;
+		}
+	}
+};
+
+#endif