Split javascript export template into multiple files

platform/javascript/export/export.cpp

@@ -28,971 +28,9 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#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"
-#include "main/splash.gen.h"
-#include "platform/javascript/logo.gen.h"
-#include "platform/javascript/run_icon.gen.h"
+#include "export.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;
-		}
-	}
-};
-
-class EditorExportPlatformJavaScript : public EditorExportPlatform {
-	GDCLASS(EditorExportPlatformJavaScript, EditorExportPlatform);
-
-	Ref<ImageTexture> logo;
-	Ref<ImageTexture> run_icon;
-	Ref<ImageTexture> stop_icon;
-	int menu_options = 0;
-
-	Ref<EditorHTTPServer> server;
-	bool server_quit = false;
-	Mutex server_lock;
-	Thread server_thread;
-
-	enum ExportMode {
-		EXPORT_MODE_NORMAL = 0,
-		EXPORT_MODE_THREADS = 1,
-		EXPORT_MODE_GDNATIVE = 2,
-	};
-
-	String _get_template_name(ExportMode p_mode, bool p_debug) const {
-		String name = "webassembly";
-		switch (p_mode) {
-			case EXPORT_MODE_THREADS:
-				name += "_threads";
-				break;
-			case EXPORT_MODE_GDNATIVE:
-				name += "_gdnative";
-				break;
-			default:
-				break;
-		}
-		if (p_debug) {
-			name += "_debug.zip";
-		} else {
-			name += "_release.zip";
-		}
-		return name;
-	}
-
-	Ref<Image> _get_project_icon() const {
-		Ref<Image> icon;
-		icon.instantiate();
-		const String icon_path = String(GLOBAL_GET("application/config/icon")).strip_edges();
-		if (icon_path.is_empty() || ImageLoader::load_image(icon_path, icon) != OK) {
-			return EditorNode::get_singleton()->get_editor_theme()->get_icon("DefaultProjectIcon", "EditorIcons")->get_image();
-		}
-		return icon;
-	}
-
-	Ref<Image> _get_project_splash() const {
-		Ref<Image> splash;
-		splash.instantiate();
-		const String splash_path = String(GLOBAL_GET("application/boot_splash/image")).strip_edges();
-		if (splash_path.is_empty() || ImageLoader::load_image(splash_path, splash) != OK) {
-			return Ref<Image>(memnew(Image(boot_splash_png)));
-		}
-		return splash;
-	}
-
-	Error _extract_template(const String &p_template, const String &p_dir, const String &p_name, bool pwa);
-	void _replace_strings(Map<String, String> p_replaces, Vector<uint8_t> &r_template);
-	void _fix_html(Vector<uint8_t> &p_html, const Ref<EditorExportPreset> &p_preset, const String &p_name, bool p_debug, int p_flags, const Vector<SharedObject> p_shared_objects, const Dictionary &p_file_sizes);
-	Error _add_manifest_icon(const String &p_path, const String &p_icon, int p_size, Array &r_arr);
-	Error _build_pwa(const Ref<EditorExportPreset> &p_preset, const String p_path, const Vector<SharedObject> &p_shared_objects);
-	Error _write_or_error(const uint8_t *p_content, int p_len, String p_path);
-
-	static void _server_thread_poll(void *data);
-
-public:
-	virtual void get_preset_features(const Ref<EditorExportPreset> &p_preset, List<String> *r_features) override;
-
-	virtual void get_export_options(List<ExportOption> *r_options) override;
-
-	virtual String get_name() const override;
-	virtual String get_os_name() const override;
-	virtual Ref<Texture2D> get_logo() const override;
-
-	virtual bool can_export(const Ref<EditorExportPreset> &p_preset, String &r_error, bool &r_missing_templates) const override;
-	virtual List<String> get_binary_extensions(const Ref<EditorExportPreset> &p_preset) const override;
-	virtual Error export_project(const Ref<EditorExportPreset> &p_preset, bool p_debug, const String &p_path, int p_flags = 0) override;
-
-	virtual bool poll_export() override;
-	virtual int get_options_count() const override;
-	virtual String get_option_label(int p_index) const override { return p_index ? TTR("Stop HTTP Server") : TTR("Run in Browser"); }
-	virtual String get_option_tooltip(int p_index) const override { return p_index ? TTR("Stop HTTP Server") : TTR("Run exported HTML in the system's default browser."); }
-	virtual Ref<ImageTexture> get_option_icon(int p_index) const override;
-	virtual Error run(const Ref<EditorExportPreset> &p_preset, int p_option, int p_debug_flags) override;
-	virtual Ref<Texture2D> get_run_icon() const override;
-
-	virtual void get_platform_features(List<String> *r_features) override {
-		r_features->push_back("web");
-		r_features->push_back(get_os_name());
-	}
-
-	virtual void resolve_platform_feature_priorities(const Ref<EditorExportPreset> &p_preset, Set<String> &p_features) override {
-	}
-
-	String get_debug_protocol() const override { return "ws://"; }
-
-	EditorExportPlatformJavaScript();
-	~EditorExportPlatformJavaScript();
-};
-
-Error EditorExportPlatformJavaScript::_extract_template(const String &p_template, const String &p_dir, const String &p_name, bool pwa) {
-	FileAccess *src_f = nullptr;
-	zlib_filefunc_def io = zipio_create_io_from_file(&src_f);
-	unzFile pkg = unzOpen2(p_template.utf8().get_data(), &io);
-
-	if (!pkg) {
-		EditorNode::get_singleton()->show_warning(TTR("Could not open template for export:") + "\n" + p_template);
-		return ERR_FILE_NOT_FOUND;
-	}
-
-	if (unzGoToFirstFile(pkg) != UNZ_OK) {
-		EditorNode::get_singleton()->show_warning(TTR("Invalid export template:") + "\n" + p_template);
-		unzClose(pkg);
-		return ERR_FILE_CORRUPT;
-	}
-
-	do {
-		//get filename
-		unz_file_info info;
-		char fname[16384];
-		unzGetCurrentFileInfo(pkg, &info, fname, 16384, nullptr, 0, nullptr, 0);
-
-		String file = fname;
-
-		// Skip service worker and offline page if not exporting pwa.
-		if (!pwa && (file == "godot.service.worker.js" || file == "godot.offline.html")) {
-			continue;
-		}
-		Vector<uint8_t> data;
-		data.resize(info.uncompressed_size);
-
-		//read
-		unzOpenCurrentFile(pkg);
-		unzReadCurrentFile(pkg, data.ptrw(), data.size());
-		unzCloseCurrentFile(pkg);
-
-		//write
-		String dst = p_dir.plus_file(file.replace("godot", p_name));
-		FileAccess *f = FileAccess::open(dst, FileAccess::WRITE);
-		if (!f) {
-			EditorNode::get_singleton()->show_warning(TTR("Could not write file:") + "\n" + dst);
-			unzClose(pkg);
-			return ERR_FILE_CANT_WRITE;
-		}
-		f->store_buffer(data.ptr(), data.size());
-		memdelete(f);
-
-	} while (unzGoToNextFile(pkg) == UNZ_OK);
-	unzClose(pkg);
-	return OK;
-}
-
-Error EditorExportPlatformJavaScript::_write_or_error(const uint8_t *p_content, int p_size, String p_path) {
-	FileAccess *f = FileAccess::open(p_path, FileAccess::WRITE);
-	if (!f) {
-		EditorNode::get_singleton()->show_warning(TTR("Could not write file:") + "\n" + p_path);
-		return ERR_FILE_CANT_WRITE;
-	}
-	f->store_buffer(p_content, p_size);
-	memdelete(f);
-	return OK;
-}
-
-void EditorExportPlatformJavaScript::_replace_strings(Map<String, String> p_replaces, Vector<uint8_t> &r_template) {
-	String str_template = String::utf8(reinterpret_cast<const char *>(r_template.ptr()), r_template.size());
-	String out;
-	Vector<String> lines = str_template.split("\n");
-	for (int i = 0; i < lines.size(); i++) {
-		String current_line = lines[i];
-		for (Map<String, String>::Element *E = p_replaces.front(); E; E = E->next()) {
-			current_line = current_line.replace(E->key(), E->get());
-		}
-		out += current_line + "\n";
-	}
-	CharString cs = out.utf8();
-	r_template.resize(cs.length());
-	for (int i = 0; i < cs.length(); i++) {
-		r_template.write[i] = cs[i];
-	}
-}
-
-void EditorExportPlatformJavaScript::_fix_html(Vector<uint8_t> &p_html, const Ref<EditorExportPreset> &p_preset, const String &p_name, bool p_debug, int p_flags, const Vector<SharedObject> p_shared_objects, const Dictionary &p_file_sizes) {
-	// Engine.js config
-	Dictionary config;
-	Array libs;
-	for (int i = 0; i < p_shared_objects.size(); i++) {
-		libs.push_back(p_shared_objects[i].path.get_file());
-	}
-	Vector<String> flags;
-	gen_export_flags(flags, p_flags & (~DEBUG_FLAG_DUMB_CLIENT));
-	Array args;
-	for (int i = 0; i < flags.size(); i++) {
-		args.push_back(flags[i]);
-	}
-	config["canvasResizePolicy"] = p_preset->get("html/canvas_resize_policy");
-	config["experimentalVK"] = p_preset->get("html/experimental_virtual_keyboard");
-	config["focusCanvas"] = p_preset->get("html/focus_canvas_on_start");
-	config["gdnativeLibs"] = libs;
-	config["executable"] = p_name;
-	config["args"] = args;
-	config["fileSizes"] = p_file_sizes;
-
-	String head_include;
-	if (p_preset->get("html/export_icon")) {
-		head_include += "<link id='-gd-engine-icon' rel='icon' type='image/png' href='" + p_name + ".icon.png' />\n";
-		head_include += "<link rel='apple-touch-icon' href='" + p_name + ".apple-touch-icon.png'/>\n";
-	}
-	if (p_preset->get("progressive_web_app/enabled")) {
-		head_include += "<link rel='manifest' href='" + p_name + ".manifest.json'>\n";
-		head_include += "<script type='application/javascript'>window.addEventListener('load', () => {if ('serviceWorker' in navigator) {navigator.serviceWorker.register('" +
-						p_name + ".service.worker.js');}});</script>\n";
-	}
-
-	// Replaces HTML string
-	const String str_config = Variant(config).to_json_string();
-	const String custom_head_include = p_preset->get("html/head_include");
-	Map<String, String> replaces;
-	replaces["$GODOT_URL"] = p_name + ".js";
-	replaces["$GODOT_PROJECT_NAME"] = ProjectSettings::get_singleton()->get_setting("application/config/name");
-	replaces["$GODOT_HEAD_INCLUDE"] = head_include + custom_head_include;
-	replaces["$GODOT_CONFIG"] = str_config;
-	_replace_strings(replaces, p_html);
-}
-
-Error EditorExportPlatformJavaScript::_add_manifest_icon(const String &p_path, const String &p_icon, int p_size, Array &r_arr) {
-	const String name = p_path.get_file().get_basename();
-	const String icon_name = vformat("%s.%dx%d.png", name, p_size, p_size);
-	const String icon_dest = p_path.get_base_dir().plus_file(icon_name);
-
-	Ref<Image> icon;
-	if (!p_icon.is_empty()) {
-		icon.instantiate();
-		const Error err = ImageLoader::load_image(p_icon, icon);
-		if (err != OK) {
-			EditorNode::get_singleton()->show_warning(TTR("Could not read file:") + "\n" + p_icon);
-			return err;
-		}
-		if (icon->get_width() != p_size || icon->get_height() != p_size) {
-			icon->resize(p_size, p_size);
-		}
-	} else {
-		icon = _get_project_icon();
-		icon->resize(p_size, p_size);
-	}
-	const Error err = icon->save_png(icon_dest);
-	if (err != OK) {
-		EditorNode::get_singleton()->show_warning(TTR("Could not write file:") + "\n" + icon_dest);
-		return err;
-	}
-	Dictionary icon_dict;
-	icon_dict["sizes"] = vformat("%dx%d", p_size, p_size);
-	icon_dict["type"] = "image/png";
-	icon_dict["src"] = icon_name;
-	r_arr.push_back(icon_dict);
-	return err;
-}
-
-Error EditorExportPlatformJavaScript::_build_pwa(const Ref<EditorExportPreset> &p_preset, const String p_path, const Vector<SharedObject> &p_shared_objects) {
-	// Service worker
-	const String dir = p_path.get_base_dir();
-	const String name = p_path.get_file().get_basename();
-	const ExportMode mode = (ExportMode)(int)p_preset->get("variant/export_type");
-	Map<String, String> replaces;
-	replaces["@GODOT_VERSION@"] = "1";
-	replaces["@GODOT_NAME@"] = name;
-	replaces["@GODOT_OFFLINE_PAGE@"] = name + ".offline.html";
-	Array files;
-	replaces["@GODOT_OPT_CACHE@"] = Variant(files).to_json_string();
-	files.push_back(name + ".html");
-	files.push_back(name + ".js");
-	files.push_back(name + ".wasm");
-	files.push_back(name + ".pck");
-	files.push_back(name + ".offline.html");
-	if (p_preset->get("html/export_icon")) {
-		files.push_back(name + ".icon.png");
-		files.push_back(name + ".apple-touch-icon.png");
-	}
-	if (mode == EXPORT_MODE_THREADS) {
-		files.push_back(name + ".worker.js");
-		files.push_back(name + ".audio.worklet.js");
-	} else if (mode == EXPORT_MODE_GDNATIVE) {
-		files.push_back(name + ".side.wasm");
-		for (int i = 0; i < p_shared_objects.size(); i++) {
-			files.push_back(p_shared_objects[i].path.get_file());
-		}
-	}
-	replaces["@GODOT_CACHE@"] = Variant(files).to_json_string();
-
-	const String sw_path = dir.plus_file(name + ".service.worker.js");
-	Vector<uint8_t> sw;
-	{
-		FileAccess *f = FileAccess::open(sw_path, FileAccess::READ);
-		if (!f) {
-			EditorNode::get_singleton()->show_warning(TTR("Could not read file:") + "\n" + sw_path);
-			return ERR_FILE_CANT_READ;
-		}
-		sw.resize(f->get_length());
-		f->get_buffer(sw.ptrw(), sw.size());
-		memdelete(f);
-		f = nullptr;
-	}
-	_replace_strings(replaces, sw);
-	Error err = _write_or_error(sw.ptr(), sw.size(), dir.plus_file(name + ".service.worker.js"));
-	if (err != OK) {
-		return err;
-	}
-
-	// Custom offline page
-	const String offline_page = p_preset->get("progressive_web_app/offline_page");
-	if (!offline_page.is_empty()) {
-		DirAccess *da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
-		const String offline_dest = dir.plus_file(name + ".offline.html");
-		err = da->copy(ProjectSettings::get_singleton()->globalize_path(offline_page), offline_dest);
-		if (err != OK) {
-			EditorNode::get_singleton()->show_warning(TTR("Could not read file:") + "\n" + offline_dest);
-			return err;
-		}
-	}
-
-	// Manifest
-	const char *modes[4] = { "fullscreen", "standalone", "minimal-ui", "browser" };
-	const char *orientations[3] = { "any", "landscape", "portrait" };
-	const int display = CLAMP(int(p_preset->get("progressive_web_app/display")), 0, 4);
-	const int orientation = CLAMP(int(p_preset->get("progressive_web_app/orientation")), 0, 3);
-
-	Dictionary manifest;
-	String proj_name = ProjectSettings::get_singleton()->get_setting("application/config/name");
-	if (proj_name.is_empty()) {
-		proj_name = "Godot Game";
-	}
-	manifest["name"] = proj_name;
-	manifest["start_url"] = "./" + name + ".html";
-	manifest["display"] = String::utf8(modes[display]);
-	manifest["orientation"] = String::utf8(orientations[orientation]);
-	manifest["background_color"] = "#" + p_preset->get("progressive_web_app/background_color").operator Color().to_html(false);
-
-	Array icons_arr;
-	const String icon144_path = p_preset->get("progressive_web_app/icon_144x144");
-	err = _add_manifest_icon(p_path, icon144_path, 144, icons_arr);
-	if (err != OK) {
-		return err;
-	}
-	const String icon180_path = p_preset->get("progressive_web_app/icon_180x180");
-	err = _add_manifest_icon(p_path, icon180_path, 180, icons_arr);
-	if (err != OK) {
-		return err;
-	}
-	const String icon512_path = p_preset->get("progressive_web_app/icon_512x512");
-	err = _add_manifest_icon(p_path, icon512_path, 512, icons_arr);
-	if (err != OK) {
-		return err;
-	}
-	manifest["icons"] = icons_arr;
-
-	CharString cs = Variant(manifest).to_json_string().utf8();
-	err = _write_or_error((const uint8_t *)cs.get_data(), cs.length(), dir.plus_file(name + ".manifest.json"));
-	if (err != OK) {
-		return err;
-	}
-
-	return OK;
-}
-
-void EditorExportPlatformJavaScript::get_preset_features(const Ref<EditorExportPreset> &p_preset, List<String> *r_features) {
-	if (p_preset->get("vram_texture_compression/for_desktop")) {
-		r_features->push_back("s3tc");
-	}
-
-	if (p_preset->get("vram_texture_compression/for_mobile")) {
-		String driver = ProjectSettings::get_singleton()->get("rendering/driver/driver_name");
-		if (driver == "GLES2") {
-			r_features->push_back("etc");
-		} else if (driver == "Vulkan") {
-			// FIXME: Review if this is correct.
-			r_features->push_back("etc2");
-		}
-	}
-	ExportMode mode = (ExportMode)(int)p_preset->get("variant/export_type");
-	if (mode == EXPORT_MODE_THREADS) {
-		r_features->push_back("threads");
-	} else if (mode == EXPORT_MODE_GDNATIVE) {
-		r_features->push_back("wasm32");
-	}
-}
-
-void EditorExportPlatformJavaScript::get_export_options(List<ExportOption> *r_options) {
-	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "custom_template/debug", PROPERTY_HINT_GLOBAL_FILE, "*.zip"), ""));
-	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "custom_template/release", PROPERTY_HINT_GLOBAL_FILE, "*.zip"), ""));
-
-	r_options->push_back(ExportOption(PropertyInfo(Variant::INT, "variant/export_type", PROPERTY_HINT_ENUM, "Regular,Threads,GDNative"), 0)); // Export type.
-	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "vram_texture_compression/for_desktop"), true)); // S3TC
-	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "vram_texture_compression/for_mobile"), false)); // ETC or ETC2, depending on renderer
-
-	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "html/export_icon"), true));
-	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "html/custom_html_shell", PROPERTY_HINT_FILE, "*.html"), ""));
-	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "html/head_include", PROPERTY_HINT_MULTILINE_TEXT), ""));
-	r_options->push_back(ExportOption(PropertyInfo(Variant::INT, "html/canvas_resize_policy", PROPERTY_HINT_ENUM, "None,Project,Adaptive"), 2));
-	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "html/focus_canvas_on_start"), true));
-	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "html/experimental_virtual_keyboard"), false));
-	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "progressive_web_app/enabled"), false));
-	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "progressive_web_app/offline_page", PROPERTY_HINT_FILE, "*.html"), ""));
-	r_options->push_back(ExportOption(PropertyInfo(Variant::INT, "progressive_web_app/display", PROPERTY_HINT_ENUM, "Fullscreen,Standalone,Minimal UI,Browser"), 1));
-	r_options->push_back(ExportOption(PropertyInfo(Variant::INT, "progressive_web_app/orientation", PROPERTY_HINT_ENUM, "Any,Landscape,Portrait"), 0));
-	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "progressive_web_app/icon_144x144", PROPERTY_HINT_FILE, "*.png,*.webp,*.svg,*.svgz"), ""));
-	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "progressive_web_app/icon_180x180", PROPERTY_HINT_FILE, "*.png,*.webp,*.svg,*.svgz"), ""));
-	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "progressive_web_app/icon_512x512", PROPERTY_HINT_FILE, "*.png,*.webp,*.svg,*.svgz"), ""));
-	r_options->push_back(ExportOption(PropertyInfo(Variant::COLOR, "progressive_web_app/background_color", PROPERTY_HINT_COLOR_NO_ALPHA), Color()));
-}
-
-String EditorExportPlatformJavaScript::get_name() const {
-	return "HTML5";
-}
-
-String EditorExportPlatformJavaScript::get_os_name() const {
-	return "HTML5";
-}
-
-Ref<Texture2D> EditorExportPlatformJavaScript::get_logo() const {
-	return logo;
-}
-
-bool EditorExportPlatformJavaScript::can_export(const Ref<EditorExportPreset> &p_preset, String &r_error, bool &r_missing_templates) const {
-	String err;
-	bool valid = false;
-	ExportMode mode = (ExportMode)(int)p_preset->get("variant/export_type");
-
-	// Look for export templates (first official, and if defined custom templates).
-	bool dvalid = exists_export_template(_get_template_name(mode, true), &err);
-	bool rvalid = exists_export_template(_get_template_name(mode, false), &err);
-
-	if (p_preset->get("custom_template/debug") != "") {
-		dvalid = FileAccess::exists(p_preset->get("custom_template/debug"));
-		if (!dvalid) {
-			err += TTR("Custom debug template not found.") + "\n";
-		}
-	}
-	if (p_preset->get("custom_template/release") != "") {
-		rvalid = FileAccess::exists(p_preset->get("custom_template/release"));
-		if (!rvalid) {
-			err += TTR("Custom release template not found.") + "\n";
-		}
-	}
-
-	valid = dvalid || rvalid;
-	r_missing_templates = !valid;
-
-	// Validate the rest of the configuration.
-
-	if (p_preset->get("vram_texture_compression/for_mobile")) {
-		String etc_error = test_etc2();
-		if (etc_error != String()) {
-			valid = false;
-			err += etc_error;
-		}
-	}
-
-	if (!err.is_empty()) {
-		r_error = err;
-	}
-
-	return valid;
-}
-
-List<String> EditorExportPlatformJavaScript::get_binary_extensions(const Ref<EditorExportPreset> &p_preset) const {
-	List<String> list;
-	list.push_back("html");
-	return list;
-}
-
-Error EditorExportPlatformJavaScript::export_project(const Ref<EditorExportPreset> &p_preset, bool p_debug, const String &p_path, int p_flags) {
-	ExportNotifier notifier(*this, p_preset, p_debug, p_path, p_flags);
-
-	const String custom_debug = p_preset->get("custom_template/debug");
-	const String custom_release = p_preset->get("custom_template/release");
-	const String custom_html = p_preset->get("html/custom_html_shell");
-	const bool export_icon = p_preset->get("html/export_icon");
-	const bool pwa = p_preset->get("progressive_web_app/enabled");
-
-	const String base_dir = p_path.get_base_dir();
-	const String base_path = p_path.get_basename();
-	const String base_name = p_path.get_file().get_basename();
-
-	// Find the correct template
-	String template_path = p_debug ? custom_debug : custom_release;
-	template_path = template_path.strip_edges();
-	if (template_path == String()) {
-		ExportMode mode = (ExportMode)(int)p_preset->get("variant/export_type");
-		template_path = find_export_template(_get_template_name(mode, p_debug));
-	}
-
-	if (!DirAccess::exists(base_dir)) {
-		return ERR_FILE_BAD_PATH;
-	}
-
-	if (template_path != String() && !FileAccess::exists(template_path)) {
-		EditorNode::get_singleton()->show_warning(TTR("Template file not found:") + "\n" + template_path);
-		return ERR_FILE_NOT_FOUND;
-	}
-
-	// Export pck and shared objects
-	Vector<SharedObject> shared_objects;
-	String pck_path = base_path + ".pck";
-	Error error = save_pack(p_preset, pck_path, &shared_objects);
-	if (error != OK) {
-		EditorNode::get_singleton()->show_warning(TTR("Could not write file:") + "\n" + pck_path);
-		return error;
-	}
-	DirAccess *da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
-	for (int i = 0; i < shared_objects.size(); i++) {
-		String dst = base_dir.plus_file(shared_objects[i].path.get_file());
-		error = da->copy(shared_objects[i].path, dst);
-		if (error != OK) {
-			EditorNode::get_singleton()->show_warning(TTR("Could not write file:") + "\n" + shared_objects[i].path.get_file());
-			memdelete(da);
-			return error;
-		}
-	}
-	memdelete(da);
-	da = nullptr;
-
-	// Extract templates.
-	error = _extract_template(template_path, base_dir, base_name, pwa);
-	if (error) {
-		return error;
-	}
-
-	// Parse generated file sizes (pck and wasm, to help show a meaningful loading bar).
-	Dictionary file_sizes;
-	FileAccess *f = nullptr;
-	f = FileAccess::open(pck_path, FileAccess::READ);
-	if (f) {
-		file_sizes[pck_path.get_file()] = (uint64_t)f->get_length();
-		memdelete(f);
-		f = nullptr;
-	}
-	f = FileAccess::open(base_path + ".wasm", FileAccess::READ);
-	if (f) {
-		file_sizes[base_name + ".wasm"] = (uint64_t)f->get_length();
-		memdelete(f);
-		f = nullptr;
-	}
-
-	// Read the HTML shell file (custom or from template).
-	const String html_path = custom_html.is_empty() ? base_path + ".html" : custom_html;
-	Vector<uint8_t> html;
-	f = FileAccess::open(html_path, FileAccess::READ);
-	if (!f) {
-		EditorNode::get_singleton()->show_warning(TTR("Could not read HTML shell:") + "\n" + html_path);
-		return ERR_FILE_CANT_READ;
-	}
-	html.resize(f->get_length());
-	f->get_buffer(html.ptrw(), html.size());
-	memdelete(f);
-	f = nullptr;
-
-	// Generate HTML file with replaced strings.
-	_fix_html(html, p_preset, base_name, p_debug, p_flags, shared_objects, file_sizes);
-	Error err = _write_or_error(html.ptr(), html.size(), p_path);
-	if (err != OK) {
-		return err;
-	}
-	html.resize(0);
-
-	// Export splash (why?)
-	Ref<Image> splash = _get_project_splash();
-	const String splash_png_path = base_path + ".png";
-	if (splash->save_png(splash_png_path) != OK) {
-		EditorNode::get_singleton()->show_warning(TTR("Could not write file:") + "\n" + splash_png_path);
-		return ERR_FILE_CANT_WRITE;
-	}
-
-	// Save a favicon that can be accessed without waiting for the project to finish loading.
-	// This way, the favicon can be displayed immediately when loading the page.
-	if (export_icon) {
-		Ref<Image> favicon = _get_project_icon();
-		const String favicon_png_path = base_path + ".icon.png";
-		if (favicon->save_png(favicon_png_path) != OK) {
-			EditorNode::get_singleton()->show_warning(TTR("Could not write file:") + "\n" + favicon_png_path);
-			return ERR_FILE_CANT_WRITE;
-		}
-		favicon->resize(180, 180);
-		const String apple_icon_png_path = base_path + ".apple-touch-icon.png";
-		if (favicon->save_png(apple_icon_png_path) != OK) {
-			EditorNode::get_singleton()->show_warning(TTR("Could not write file:") + "\n" + apple_icon_png_path);
-			return ERR_FILE_CANT_WRITE;
-		}
-	}
-
-	// Generate the PWA worker and manifest
-	if (pwa) {
-		err = _build_pwa(p_preset, p_path, shared_objects);
-		if (err != OK) {
-			return err;
-		}
-	}
-
-	return OK;
-}
-
-bool EditorExportPlatformJavaScript::poll_export() {
-	Ref<EditorExportPreset> preset;
-
-	for (int i = 0; i < EditorExport::get_singleton()->get_export_preset_count(); i++) {
-		Ref<EditorExportPreset> ep = EditorExport::get_singleton()->get_export_preset(i);
-		if (ep->is_runnable() && ep->get_platform() == this) {
-			preset = ep;
-			break;
-		}
-	}
-
-	int prev = menu_options;
-	menu_options = preset.is_valid();
-	if (server->is_listening()) {
-		if (menu_options == 0) {
-			MutexLock lock(server_lock);
-			server->stop();
-		} else {
-			menu_options += 1;
-		}
-	}
-	return menu_options != prev;
-}
-
-Ref<ImageTexture> EditorExportPlatformJavaScript::get_option_icon(int p_index) const {
-	return p_index == 1 ? stop_icon : EditorExportPlatform::get_option_icon(p_index);
-}
-
-int EditorExportPlatformJavaScript::get_options_count() const {
-	return menu_options;
-}
-
-Error EditorExportPlatformJavaScript::run(const Ref<EditorExportPreset> &p_preset, int p_option, int p_debug_flags) {
-	if (p_option == 1) {
-		MutexLock lock(server_lock);
-		server->stop();
-		return OK;
-	}
-
-	const String dest = EditorPaths::get_singleton()->get_cache_dir().plus_file("web");
-	DirAccessRef da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
-	if (!da->dir_exists(dest)) {
-		Error err = da->make_dir_recursive(dest);
-		if (err != OK) {
-			EditorNode::get_singleton()->show_warning(TTR("Could not create HTTP server directory:") + "\n" + dest);
-			return err;
-		}
-	}
-	const String basepath = dest.plus_file("tmp_js_export");
-	Error err = export_project(p_preset, true, basepath + ".html", p_debug_flags);
-	if (err != OK) {
-		// Export generates several files, clean them up on failure.
-		DirAccess::remove_file_or_error(basepath + ".html");
-		DirAccess::remove_file_or_error(basepath + ".offline.html");
-		DirAccess::remove_file_or_error(basepath + ".js");
-		DirAccess::remove_file_or_error(basepath + ".worker.js");
-		DirAccess::remove_file_or_error(basepath + ".audio.worklet.js");
-		DirAccess::remove_file_or_error(basepath + ".service.worker.js");
-		DirAccess::remove_file_or_error(basepath + ".pck");
-		DirAccess::remove_file_or_error(basepath + ".png");
-		DirAccess::remove_file_or_error(basepath + ".side.wasm");
-		DirAccess::remove_file_or_error(basepath + ".wasm");
-		DirAccess::remove_file_or_error(basepath + ".icon.png");
-		DirAccess::remove_file_or_error(basepath + ".apple-touch-icon.png");
-		return err;
-	}
-
-	const uint16_t bind_port = EDITOR_GET("export/web/http_port");
-	// Resolve host if needed.
-	const String bind_host = EDITOR_GET("export/web/http_host");
-	IPAddress bind_ip;
-	if (bind_host.is_valid_ip_address()) {
-		bind_ip = bind_host;
-	} else {
-		bind_ip = IP::get_singleton()->resolve_hostname(bind_host);
-	}
-	ERR_FAIL_COND_V_MSG(!bind_ip.is_valid(), ERR_INVALID_PARAMETER, "Invalid editor setting 'export/web/http_host': '" + bind_host + "'. Try using '127.0.0.1'.");
-
-	const bool use_ssl = EDITOR_GET("export/web/use_ssl");
-	const String ssl_key = EDITOR_GET("export/web/ssl_key");
-	const String ssl_cert = EDITOR_GET("export/web/ssl_certificate");
-
-	// Restart server.
-	{
-		MutexLock lock(server_lock);
-
-		server->stop();
-		err = server->listen(bind_port, bind_ip, use_ssl, ssl_key, ssl_cert);
-	}
-	if (err != OK) {
-		EditorNode::get_singleton()->show_warning(TTR("Error starting HTTP server:") + "\n" + itos(err));
-		return err;
-	}
-
-	OS::get_singleton()->shell_open(String((use_ssl ? "https://" : "http://") + bind_host + ":" + itos(bind_port) + "/tmp_js_export.html"));
-	// FIXME: Find out how to clean up export files after running the successfully
-	// exported game. Might not be trivial.
-	return OK;
-}
-
-Ref<Texture2D> EditorExportPlatformJavaScript::get_run_icon() const {
-	return run_icon;
-}
-
-void EditorExportPlatformJavaScript::_server_thread_poll(void *data) {
-	EditorExportPlatformJavaScript *ej = (EditorExportPlatformJavaScript *)data;
-	while (!ej->server_quit) {
-		OS::get_singleton()->delay_usec(1000);
-		{
-			MutexLock lock(ej->server_lock);
-			ej->server->poll();
-		}
-	}
-}
-
-EditorExportPlatformJavaScript::EditorExportPlatformJavaScript() {
-	server.instantiate();
-	server_thread.start(_server_thread_poll, this);
-
-	Ref<Image> img = memnew(Image(_javascript_logo));
-	logo.instantiate();
-	logo->create_from_image(img);
-
-	img = Ref<Image>(memnew(Image(_javascript_run_icon)));
-	run_icon.instantiate();
-	run_icon->create_from_image(img);
-
-	Ref<Theme> theme = EditorNode::get_singleton()->get_editor_theme();
-	if (theme.is_valid()) {
-		stop_icon = theme->get_icon("Stop", "EditorIcons");
-	} else {
-		stop_icon.instantiate();
-	}
-}
-
-EditorExportPlatformJavaScript::~EditorExportPlatformJavaScript() {
-	server->stop();
-	server_quit = true;
-	server_thread.wait_to_finish();
-}
+#include "export_plugin.h"
 
 void register_javascript_exporter() {
 	EDITOR_DEF("export/web/http_host", "localhost");

platform/javascript/export/export.h

@@ -28,4 +28,9 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
+#ifndef JAVASCRIPT_EXPORT_H
+#define JAVASCRIPT_EXPORT_H
+
 void register_javascript_exporter();
+
+#endif

platform/javascript/export/export_plugin.cpp

@@ -0,0 +1,671 @@
+/*************************************************************************/
+/*  export_plugin.cpp                                                    */
+/*************************************************************************/
+/*                       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.                */
+/*************************************************************************/
+
+#include "export_plugin.h"
+
+Error EditorExportPlatformJavaScript::_extract_template(const String &p_template, const String &p_dir, const String &p_name, bool pwa) {
+	FileAccess *src_f = nullptr;
+	zlib_filefunc_def io = zipio_create_io_from_file(&src_f);
+	unzFile pkg = unzOpen2(p_template.utf8().get_data(), &io);
+
+	if (!pkg) {
+		EditorNode::get_singleton()->show_warning(TTR("Could not open template for export:") + "\n" + p_template);
+		return ERR_FILE_NOT_FOUND;
+	}
+
+	if (unzGoToFirstFile(pkg) != UNZ_OK) {
+		EditorNode::get_singleton()->show_warning(TTR("Invalid export template:") + "\n" + p_template);
+		unzClose(pkg);
+		return ERR_FILE_CORRUPT;
+	}
+
+	do {
+		//get filename
+		unz_file_info info;
+		char fname[16384];
+		unzGetCurrentFileInfo(pkg, &info, fname, 16384, nullptr, 0, nullptr, 0);
+
+		String file = fname;
+
+		// Skip service worker and offline page if not exporting pwa.
+		if (!pwa && (file == "godot.service.worker.js" || file == "godot.offline.html")) {
+			continue;
+		}
+		Vector<uint8_t> data;
+		data.resize(info.uncompressed_size);
+
+		//read
+		unzOpenCurrentFile(pkg);
+		unzReadCurrentFile(pkg, data.ptrw(), data.size());
+		unzCloseCurrentFile(pkg);
+
+		//write
+		String dst = p_dir.plus_file(file.replace("godot", p_name));
+		FileAccess *f = FileAccess::open(dst, FileAccess::WRITE);
+		if (!f) {
+			EditorNode::get_singleton()->show_warning(TTR("Could not write file:") + "\n" + dst);
+			unzClose(pkg);
+			return ERR_FILE_CANT_WRITE;
+		}
+		f->store_buffer(data.ptr(), data.size());
+		memdelete(f);
+
+	} while (unzGoToNextFile(pkg) == UNZ_OK);
+	unzClose(pkg);
+	return OK;
+}
+
+Error EditorExportPlatformJavaScript::_write_or_error(const uint8_t *p_content, int p_size, String p_path) {
+	FileAccess *f = FileAccess::open(p_path, FileAccess::WRITE);
+	if (!f) {
+		EditorNode::get_singleton()->show_warning(TTR("Could not write file:") + "\n" + p_path);
+		return ERR_FILE_CANT_WRITE;
+	}
+	f->store_buffer(p_content, p_size);
+	memdelete(f);
+	return OK;
+}
+
+void EditorExportPlatformJavaScript::_replace_strings(Map<String, String> p_replaces, Vector<uint8_t> &r_template) {
+	String str_template = String::utf8(reinterpret_cast<const char *>(r_template.ptr()), r_template.size());
+	String out;
+	Vector<String> lines = str_template.split("\n");
+	for (int i = 0; i < lines.size(); i++) {
+		String current_line = lines[i];
+		for (Map<String, String>::Element *E = p_replaces.front(); E; E = E->next()) {
+			current_line = current_line.replace(E->key(), E->get());
+		}
+		out += current_line + "\n";
+	}
+	CharString cs = out.utf8();
+	r_template.resize(cs.length());
+	for (int i = 0; i < cs.length(); i++) {
+		r_template.write[i] = cs[i];
+	}
+}
+
+void EditorExportPlatformJavaScript::_fix_html(Vector<uint8_t> &p_html, const Ref<EditorExportPreset> &p_preset, const String &p_name, bool p_debug, int p_flags, const Vector<SharedObject> p_shared_objects, const Dictionary &p_file_sizes) {
+	// Engine.js config
+	Dictionary config;
+	Array libs;
+	for (int i = 0; i < p_shared_objects.size(); i++) {
+		libs.push_back(p_shared_objects[i].path.get_file());
+	}
+	Vector<String> flags;
+	gen_export_flags(flags, p_flags & (~DEBUG_FLAG_DUMB_CLIENT));
+	Array args;
+	for (int i = 0; i < flags.size(); i++) {
+		args.push_back(flags[i]);
+	}
+	config["canvasResizePolicy"] = p_preset->get("html/canvas_resize_policy");
+	config["experimentalVK"] = p_preset->get("html/experimental_virtual_keyboard");
+	config["focusCanvas"] = p_preset->get("html/focus_canvas_on_start");
+	config["gdnativeLibs"] = libs;
+	config["executable"] = p_name;
+	config["args"] = args;
+	config["fileSizes"] = p_file_sizes;
+
+	String head_include;
+	if (p_preset->get("html/export_icon")) {
+		head_include += "<link id='-gd-engine-icon' rel='icon' type='image/png' href='" + p_name + ".icon.png' />\n";
+		head_include += "<link rel='apple-touch-icon' href='" + p_name + ".apple-touch-icon.png'/>\n";
+	}
+	if (p_preset->get("progressive_web_app/enabled")) {
+		head_include += "<link rel='manifest' href='" + p_name + ".manifest.json'>\n";
+		head_include += "<script type='application/javascript'>window.addEventListener('load', () => {if ('serviceWorker' in navigator) {navigator.serviceWorker.register('" +
+						p_name + ".service.worker.js');}});</script>\n";
+	}
+
+	// Replaces HTML string
+	const String str_config = Variant(config).to_json_string();
+	const String custom_head_include = p_preset->get("html/head_include");
+	Map<String, String> replaces;
+	replaces["$GODOT_URL"] = p_name + ".js";
+	replaces["$GODOT_PROJECT_NAME"] = ProjectSettings::get_singleton()->get_setting("application/config/name");
+	replaces["$GODOT_HEAD_INCLUDE"] = head_include + custom_head_include;
+	replaces["$GODOT_CONFIG"] = str_config;
+	_replace_strings(replaces, p_html);
+}
+
+Error EditorExportPlatformJavaScript::_add_manifest_icon(const String &p_path, const String &p_icon, int p_size, Array &r_arr) {
+	const String name = p_path.get_file().get_basename();
+	const String icon_name = vformat("%s.%dx%d.png", name, p_size, p_size);
+	const String icon_dest = p_path.get_base_dir().plus_file(icon_name);
+
+	Ref<Image> icon;
+	if (!p_icon.is_empty()) {
+		icon.instantiate();
+		const Error err = ImageLoader::load_image(p_icon, icon);
+		if (err != OK) {
+			EditorNode::get_singleton()->show_warning(TTR("Could not read file:") + "\n" + p_icon);
+			return err;
+		}
+		if (icon->get_width() != p_size || icon->get_height() != p_size) {
+			icon->resize(p_size, p_size);
+		}
+	} else {
+		icon = _get_project_icon();
+		icon->resize(p_size, p_size);
+	}
+	const Error err = icon->save_png(icon_dest);
+	if (err != OK) {
+		EditorNode::get_singleton()->show_warning(TTR("Could not write file:") + "\n" + icon_dest);
+		return err;
+	}
+	Dictionary icon_dict;
+	icon_dict["sizes"] = vformat("%dx%d", p_size, p_size);
+	icon_dict["type"] = "image/png";
+	icon_dict["src"] = icon_name;
+	r_arr.push_back(icon_dict);
+	return err;
+}
+
+Error EditorExportPlatformJavaScript::_build_pwa(const Ref<EditorExportPreset> &p_preset, const String p_path, const Vector<SharedObject> &p_shared_objects) {
+	// Service worker
+	const String dir = p_path.get_base_dir();
+	const String name = p_path.get_file().get_basename();
+	const ExportMode mode = (ExportMode)(int)p_preset->get("variant/export_type");
+	Map<String, String> replaces;
+	replaces["@GODOT_VERSION@"] = "1";
+	replaces["@GODOT_NAME@"] = name;
+	replaces["@GODOT_OFFLINE_PAGE@"] = name + ".offline.html";
+	Array files;
+	replaces["@GODOT_OPT_CACHE@"] = Variant(files).to_json_string();
+	files.push_back(name + ".html");
+	files.push_back(name + ".js");
+	files.push_back(name + ".wasm");
+	files.push_back(name + ".pck");
+	files.push_back(name + ".offline.html");
+	if (p_preset->get("html/export_icon")) {
+		files.push_back(name + ".icon.png");
+		files.push_back(name + ".apple-touch-icon.png");
+	}
+	if (mode == EXPORT_MODE_THREADS) {
+		files.push_back(name + ".worker.js");
+		files.push_back(name + ".audio.worklet.js");
+	} else if (mode == EXPORT_MODE_GDNATIVE) {
+		files.push_back(name + ".side.wasm");
+		for (int i = 0; i < p_shared_objects.size(); i++) {
+			files.push_back(p_shared_objects[i].path.get_file());
+		}
+	}
+	replaces["@GODOT_CACHE@"] = Variant(files).to_json_string();
+
+	const String sw_path = dir.plus_file(name + ".service.worker.js");
+	Vector<uint8_t> sw;
+	{
+		FileAccess *f = FileAccess::open(sw_path, FileAccess::READ);
+		if (!f) {
+			EditorNode::get_singleton()->show_warning(TTR("Could not read file:") + "\n" + sw_path);
+			return ERR_FILE_CANT_READ;
+		}
+		sw.resize(f->get_length());
+		f->get_buffer(sw.ptrw(), sw.size());
+		memdelete(f);
+		f = nullptr;
+	}
+	_replace_strings(replaces, sw);
+	Error err = _write_or_error(sw.ptr(), sw.size(), dir.plus_file(name + ".service.worker.js"));
+	if (err != OK) {
+		return err;
+	}
+
+	// Custom offline page
+	const String offline_page = p_preset->get("progressive_web_app/offline_page");
+	if (!offline_page.is_empty()) {
+		DirAccess *da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
+		const String offline_dest = dir.plus_file(name + ".offline.html");
+		err = da->copy(ProjectSettings::get_singleton()->globalize_path(offline_page), offline_dest);
+		if (err != OK) {
+			EditorNode::get_singleton()->show_warning(TTR("Could not read file:") + "\n" + offline_dest);
+			return err;
+		}
+	}
+
+	// Manifest
+	const char *modes[4] = { "fullscreen", "standalone", "minimal-ui", "browser" };
+	const char *orientations[3] = { "any", "landscape", "portrait" };
+	const int display = CLAMP(int(p_preset->get("progressive_web_app/display")), 0, 4);
+	const int orientation = CLAMP(int(p_preset->get("progressive_web_app/orientation")), 0, 3);
+
+	Dictionary manifest;
+	String proj_name = ProjectSettings::get_singleton()->get_setting("application/config/name");
+	if (proj_name.is_empty()) {
+		proj_name = "Godot Game";
+	}
+	manifest["name"] = proj_name;
+	manifest["start_url"] = "./" + name + ".html";
+	manifest["display"] = String::utf8(modes[display]);
+	manifest["orientation"] = String::utf8(orientations[orientation]);
+	manifest["background_color"] = "#" + p_preset->get("progressive_web_app/background_color").operator Color().to_html(false);
+
+	Array icons_arr;
+	const String icon144_path = p_preset->get("progressive_web_app/icon_144x144");
+	err = _add_manifest_icon(p_path, icon144_path, 144, icons_arr);
+	if (err != OK) {
+		return err;
+	}
+	const String icon180_path = p_preset->get("progressive_web_app/icon_180x180");
+	err = _add_manifest_icon(p_path, icon180_path, 180, icons_arr);
+	if (err != OK) {
+		return err;
+	}
+	const String icon512_path = p_preset->get("progressive_web_app/icon_512x512");
+	err = _add_manifest_icon(p_path, icon512_path, 512, icons_arr);
+	if (err != OK) {
+		return err;
+	}
+	manifest["icons"] = icons_arr;
+
+	CharString cs = Variant(manifest).to_json_string().utf8();
+	err = _write_or_error((const uint8_t *)cs.get_data(), cs.length(), dir.plus_file(name + ".manifest.json"));
+	if (err != OK) {
+		return err;
+	}
+
+	return OK;
+}
+
+void EditorExportPlatformJavaScript::get_preset_features(const Ref<EditorExportPreset> &p_preset, List<String> *r_features) {
+	if (p_preset->get("vram_texture_compression/for_desktop")) {
+		r_features->push_back("s3tc");
+	}
+
+	if (p_preset->get("vram_texture_compression/for_mobile")) {
+		String driver = ProjectSettings::get_singleton()->get("rendering/driver/driver_name");
+		if (driver == "GLES2") {
+			r_features->push_back("etc");
+		} else if (driver == "Vulkan") {
+			// FIXME: Review if this is correct.
+			r_features->push_back("etc2");
+		}
+	}
+	ExportMode mode = (ExportMode)(int)p_preset->get("variant/export_type");
+	if (mode == EXPORT_MODE_THREADS) {
+		r_features->push_back("threads");
+	} else if (mode == EXPORT_MODE_GDNATIVE) {
+		r_features->push_back("wasm32");
+	}
+}
+
+void EditorExportPlatformJavaScript::get_export_options(List<ExportOption> *r_options) {
+	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "custom_template/debug", PROPERTY_HINT_GLOBAL_FILE, "*.zip"), ""));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "custom_template/release", PROPERTY_HINT_GLOBAL_FILE, "*.zip"), ""));
+
+	r_options->push_back(ExportOption(PropertyInfo(Variant::INT, "variant/export_type", PROPERTY_HINT_ENUM, "Regular,Threads,GDNative"), 0)); // Export type.
+	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "vram_texture_compression/for_desktop"), true)); // S3TC
+	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "vram_texture_compression/for_mobile"), false)); // ETC or ETC2, depending on renderer
+
+	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "html/export_icon"), true));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "html/custom_html_shell", PROPERTY_HINT_FILE, "*.html"), ""));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "html/head_include", PROPERTY_HINT_MULTILINE_TEXT), ""));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::INT, "html/canvas_resize_policy", PROPERTY_HINT_ENUM, "None,Project,Adaptive"), 2));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "html/focus_canvas_on_start"), true));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "html/experimental_virtual_keyboard"), false));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "progressive_web_app/enabled"), false));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "progressive_web_app/offline_page", PROPERTY_HINT_FILE, "*.html"), ""));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::INT, "progressive_web_app/display", PROPERTY_HINT_ENUM, "Fullscreen,Standalone,Minimal UI,Browser"), 1));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::INT, "progressive_web_app/orientation", PROPERTY_HINT_ENUM, "Any,Landscape,Portrait"), 0));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "progressive_web_app/icon_144x144", PROPERTY_HINT_FILE, "*.png,*.webp,*.svg,*.svgz"), ""));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "progressive_web_app/icon_180x180", PROPERTY_HINT_FILE, "*.png,*.webp,*.svg,*.svgz"), ""));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "progressive_web_app/icon_512x512", PROPERTY_HINT_FILE, "*.png,*.webp,*.svg,*.svgz"), ""));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::COLOR, "progressive_web_app/background_color", PROPERTY_HINT_COLOR_NO_ALPHA), Color()));
+}
+
+String EditorExportPlatformJavaScript::get_name() const {
+	return "HTML5";
+}
+
+String EditorExportPlatformJavaScript::get_os_name() const {
+	return "HTML5";
+}
+
+Ref<Texture2D> EditorExportPlatformJavaScript::get_logo() const {
+	return logo;
+}
+
+bool EditorExportPlatformJavaScript::can_export(const Ref<EditorExportPreset> &p_preset, String &r_error, bool &r_missing_templates) const {
+	String err;
+	bool valid = false;
+	ExportMode mode = (ExportMode)(int)p_preset->get("variant/export_type");
+
+	// Look for export templates (first official, and if defined custom templates).
+	bool dvalid = exists_export_template(_get_template_name(mode, true), &err);
+	bool rvalid = exists_export_template(_get_template_name(mode, false), &err);
+
+	if (p_preset->get("custom_template/debug") != "") {
+		dvalid = FileAccess::exists(p_preset->get("custom_template/debug"));
+		if (!dvalid) {
+			err += TTR("Custom debug template not found.") + "\n";
+		}
+	}
+	if (p_preset->get("custom_template/release") != "") {
+		rvalid = FileAccess::exists(p_preset->get("custom_template/release"));
+		if (!rvalid) {
+			err += TTR("Custom release template not found.") + "\n";
+		}
+	}
+
+	valid = dvalid || rvalid;
+	r_missing_templates = !valid;
+
+	// Validate the rest of the configuration.
+
+	if (p_preset->get("vram_texture_compression/for_mobile")) {
+		String etc_error = test_etc2();
+		if (etc_error != String()) {
+			valid = false;
+			err += etc_error;
+		}
+	}
+
+	if (!err.is_empty()) {
+		r_error = err;
+	}
+
+	return valid;
+}
+
+List<String> EditorExportPlatformJavaScript::get_binary_extensions(const Ref<EditorExportPreset> &p_preset) const {
+	List<String> list;
+	list.push_back("html");
+	return list;
+}
+
+Error EditorExportPlatformJavaScript::export_project(const Ref<EditorExportPreset> &p_preset, bool p_debug, const String &p_path, int p_flags) {
+	ExportNotifier notifier(*this, p_preset, p_debug, p_path, p_flags);
+
+	const String custom_debug = p_preset->get("custom_template/debug");
+	const String custom_release = p_preset->get("custom_template/release");
+	const String custom_html = p_preset->get("html/custom_html_shell");
+	const bool export_icon = p_preset->get("html/export_icon");
+	const bool pwa = p_preset->get("progressive_web_app/enabled");
+
+	const String base_dir = p_path.get_base_dir();
+	const String base_path = p_path.get_basename();
+	const String base_name = p_path.get_file().get_basename();
+
+	// Find the correct template
+	String template_path = p_debug ? custom_debug : custom_release;
+	template_path = template_path.strip_edges();
+	if (template_path == String()) {
+		ExportMode mode = (ExportMode)(int)p_preset->get("variant/export_type");
+		template_path = find_export_template(_get_template_name(mode, p_debug));
+	}
+
+	if (!DirAccess::exists(base_dir)) {
+		return ERR_FILE_BAD_PATH;
+	}
+
+	if (template_path != String() && !FileAccess::exists(template_path)) {
+		EditorNode::get_singleton()->show_warning(TTR("Template file not found:") + "\n" + template_path);
+		return ERR_FILE_NOT_FOUND;
+	}
+
+	// Export pck and shared objects
+	Vector<SharedObject> shared_objects;
+	String pck_path = base_path + ".pck";
+	Error error = save_pack(p_preset, pck_path, &shared_objects);
+	if (error != OK) {
+		EditorNode::get_singleton()->show_warning(TTR("Could not write file:") + "\n" + pck_path);
+		return error;
+	}
+	DirAccess *da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
+	for (int i = 0; i < shared_objects.size(); i++) {
+		String dst = base_dir.plus_file(shared_objects[i].path.get_file());
+		error = da->copy(shared_objects[i].path, dst);
+		if (error != OK) {
+			EditorNode::get_singleton()->show_warning(TTR("Could not write file:") + "\n" + shared_objects[i].path.get_file());
+			memdelete(da);
+			return error;
+		}
+	}
+	memdelete(da);
+	da = nullptr;
+
+	// Extract templates.
+	error = _extract_template(template_path, base_dir, base_name, pwa);
+	if (error) {
+		return error;
+	}
+
+	// Parse generated file sizes (pck and wasm, to help show a meaningful loading bar).
+	Dictionary file_sizes;
+	FileAccess *f = nullptr;
+	f = FileAccess::open(pck_path, FileAccess::READ);
+	if (f) {
+		file_sizes[pck_path.get_file()] = (uint64_t)f->get_length();
+		memdelete(f);
+		f = nullptr;
+	}
+	f = FileAccess::open(base_path + ".wasm", FileAccess::READ);
+	if (f) {
+		file_sizes[base_name + ".wasm"] = (uint64_t)f->get_length();
+		memdelete(f);
+		f = nullptr;
+	}
+
+	// Read the HTML shell file (custom or from template).
+	const String html_path = custom_html.is_empty() ? base_path + ".html" : custom_html;
+	Vector<uint8_t> html;
+	f = FileAccess::open(html_path, FileAccess::READ);
+	if (!f) {
+		EditorNode::get_singleton()->show_warning(TTR("Could not read HTML shell:") + "\n" + html_path);
+		return ERR_FILE_CANT_READ;
+	}
+	html.resize(f->get_length());
+	f->get_buffer(html.ptrw(), html.size());
+	memdelete(f);
+	f = nullptr;
+
+	// Generate HTML file with replaced strings.
+	_fix_html(html, p_preset, base_name, p_debug, p_flags, shared_objects, file_sizes);
+	Error err = _write_or_error(html.ptr(), html.size(), p_path);
+	if (err != OK) {
+		return err;
+	}
+	html.resize(0);
+
+	// Export splash (why?)
+	Ref<Image> splash = _get_project_splash();
+	const String splash_png_path = base_path + ".png";
+	if (splash->save_png(splash_png_path) != OK) {
+		EditorNode::get_singleton()->show_warning(TTR("Could not write file:") + "\n" + splash_png_path);
+		return ERR_FILE_CANT_WRITE;
+	}
+
+	// Save a favicon that can be accessed without waiting for the project to finish loading.
+	// This way, the favicon can be displayed immediately when loading the page.
+	if (export_icon) {
+		Ref<Image> favicon = _get_project_icon();
+		const String favicon_png_path = base_path + ".icon.png";
+		if (favicon->save_png(favicon_png_path) != OK) {
+			EditorNode::get_singleton()->show_warning(TTR("Could not write file:") + "\n" + favicon_png_path);
+			return ERR_FILE_CANT_WRITE;
+		}
+		favicon->resize(180, 180);
+		const String apple_icon_png_path = base_path + ".apple-touch-icon.png";
+		if (favicon->save_png(apple_icon_png_path) != OK) {
+			EditorNode::get_singleton()->show_warning(TTR("Could not write file:") + "\n" + apple_icon_png_path);
+			return ERR_FILE_CANT_WRITE;
+		}
+	}
+
+	// Generate the PWA worker and manifest
+	if (pwa) {
+		err = _build_pwa(p_preset, p_path, shared_objects);
+		if (err != OK) {
+			return err;
+		}
+	}
+
+	return OK;
+}
+
+bool EditorExportPlatformJavaScript::poll_export() {
+	Ref<EditorExportPreset> preset;
+
+	for (int i = 0; i < EditorExport::get_singleton()->get_export_preset_count(); i++) {
+		Ref<EditorExportPreset> ep = EditorExport::get_singleton()->get_export_preset(i);
+		if (ep->is_runnable() && ep->get_platform() == this) {
+			preset = ep;
+			break;
+		}
+	}
+
+	int prev = menu_options;
+	menu_options = preset.is_valid();
+	if (server->is_listening()) {
+		if (menu_options == 0) {
+			MutexLock lock(server_lock);
+			server->stop();
+		} else {
+			menu_options += 1;
+		}
+	}
+	return menu_options != prev;
+}
+
+Ref<ImageTexture> EditorExportPlatformJavaScript::get_option_icon(int p_index) const {
+	return p_index == 1 ? stop_icon : EditorExportPlatform::get_option_icon(p_index);
+}
+
+int EditorExportPlatformJavaScript::get_options_count() const {
+	return menu_options;
+}
+
+Error EditorExportPlatformJavaScript::run(const Ref<EditorExportPreset> &p_preset, int p_option, int p_debug_flags) {
+	if (p_option == 1) {
+		MutexLock lock(server_lock);
+		server->stop();
+		return OK;
+	}
+
+	const String dest = EditorPaths::get_singleton()->get_cache_dir().plus_file("web");
+	DirAccessRef da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
+	if (!da->dir_exists(dest)) {
+		Error err = da->make_dir_recursive(dest);
+		if (err != OK) {
+			EditorNode::get_singleton()->show_warning(TTR("Could not create HTTP server directory:") + "\n" + dest);
+			return err;
+		}
+	}
+	const String basepath = dest.plus_file("tmp_js_export");
+	Error err = export_project(p_preset, true, basepath + ".html", p_debug_flags);
+	if (err != OK) {
+		// Export generates several files, clean them up on failure.
+		DirAccess::remove_file_or_error(basepath + ".html");
+		DirAccess::remove_file_or_error(basepath + ".offline.html");
+		DirAccess::remove_file_or_error(basepath + ".js");
+		DirAccess::remove_file_or_error(basepath + ".worker.js");
+		DirAccess::remove_file_or_error(basepath + ".audio.worklet.js");
+		DirAccess::remove_file_or_error(basepath + ".service.worker.js");
+		DirAccess::remove_file_or_error(basepath + ".pck");
+		DirAccess::remove_file_or_error(basepath + ".png");
+		DirAccess::remove_file_or_error(basepath + ".side.wasm");
+		DirAccess::remove_file_or_error(basepath + ".wasm");
+		DirAccess::remove_file_or_error(basepath + ".icon.png");
+		DirAccess::remove_file_or_error(basepath + ".apple-touch-icon.png");
+		return err;
+	}
+
+	const uint16_t bind_port = EDITOR_GET("export/web/http_port");
+	// Resolve host if needed.
+	const String bind_host = EDITOR_GET("export/web/http_host");
+	IPAddress bind_ip;
+	if (bind_host.is_valid_ip_address()) {
+		bind_ip = bind_host;
+	} else {
+		bind_ip = IP::get_singleton()->resolve_hostname(bind_host);
+	}
+	ERR_FAIL_COND_V_MSG(!bind_ip.is_valid(), ERR_INVALID_PARAMETER, "Invalid editor setting 'export/web/http_host': '" + bind_host + "'. Try using '127.0.0.1'.");
+
+	const bool use_ssl = EDITOR_GET("export/web/use_ssl");
+	const String ssl_key = EDITOR_GET("export/web/ssl_key");
+	const String ssl_cert = EDITOR_GET("export/web/ssl_certificate");
+
+	// Restart server.
+	{
+		MutexLock lock(server_lock);
+
+		server->stop();
+		err = server->listen(bind_port, bind_ip, use_ssl, ssl_key, ssl_cert);
+	}
+	if (err != OK) {
+		EditorNode::get_singleton()->show_warning(TTR("Error starting HTTP server:") + "\n" + itos(err));
+		return err;
+	}
+
+	OS::get_singleton()->shell_open(String((use_ssl ? "https://" : "http://") + bind_host + ":" + itos(bind_port) + "/tmp_js_export.html"));
+	// FIXME: Find out how to clean up export files after running the successfully
+	// exported game. Might not be trivial.
+	return OK;
+}
+
+Ref<Texture2D> EditorExportPlatformJavaScript::get_run_icon() const {
+	return run_icon;
+}
+
+void EditorExportPlatformJavaScript::_server_thread_poll(void *data) {
+	EditorExportPlatformJavaScript *ej = (EditorExportPlatformJavaScript *)data;
+	while (!ej->server_quit) {
+		OS::get_singleton()->delay_usec(1000);
+		{
+			MutexLock lock(ej->server_lock);
+			ej->server->poll();
+		}
+	}
+}
+
+EditorExportPlatformJavaScript::EditorExportPlatformJavaScript() {
+	server.instantiate();
+	server_thread.start(_server_thread_poll, this);
+
+	Ref<Image> img = memnew(Image(_javascript_logo));
+	logo.instantiate();
+	logo->create_from_image(img);
+
+	img = Ref<Image>(memnew(Image(_javascript_run_icon)));
+	run_icon.instantiate();
+	run_icon->create_from_image(img);
+
+	Ref<Theme> theme = EditorNode::get_singleton()->get_editor_theme();
+	if (theme.is_valid()) {
+		stop_icon = theme->get_icon("Stop", "EditorIcons");
+	} else {
+		stop_icon.instantiate();
+	}
+}
+
+EditorExportPlatformJavaScript::~EditorExportPlatformJavaScript() {
+	server->stop();
+	server_quit = true;
+	server_thread.wait_to_finish();
+}

platform/javascript/export/export_plugin.h

@@ -0,0 +1,149 @@
+/*************************************************************************/
+/*  export_plugin.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_PLUGIN_H
+#define JAVASCRIPT_EXPORT_PLUGIN_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"
+#include "main/splash.gen.h"
+#include "platform/javascript/logo.gen.h"
+#include "platform/javascript/run_icon.gen.h"
+
+#include "export_server.h"
+
+class EditorExportPlatformJavaScript : public EditorExportPlatform {
+	GDCLASS(EditorExportPlatformJavaScript, EditorExportPlatform);
+
+	Ref<ImageTexture> logo;
+	Ref<ImageTexture> run_icon;
+	Ref<ImageTexture> stop_icon;
+	int menu_options = 0;
+
+	Ref<EditorHTTPServer> server;
+	bool server_quit = false;
+	Mutex server_lock;
+	Thread server_thread;
+
+	enum ExportMode {
+		EXPORT_MODE_NORMAL = 0,
+		EXPORT_MODE_THREADS = 1,
+		EXPORT_MODE_GDNATIVE = 2,
+	};
+
+	String _get_template_name(ExportMode p_mode, bool p_debug) const {
+		String name = "webassembly";
+		switch (p_mode) {
+			case EXPORT_MODE_THREADS:
+				name += "_threads";
+				break;
+			case EXPORT_MODE_GDNATIVE:
+				name += "_gdnative";
+				break;
+			default:
+				break;
+		}
+		if (p_debug) {
+			name += "_debug.zip";
+		} else {
+			name += "_release.zip";
+		}
+		return name;
+	}
+
+	Ref<Image> _get_project_icon() const {
+		Ref<Image> icon;
+		icon.instantiate();
+		const String icon_path = String(GLOBAL_GET("application/config/icon")).strip_edges();
+		if (icon_path.is_empty() || ImageLoader::load_image(icon_path, icon) != OK) {
+			return EditorNode::get_singleton()->get_editor_theme()->get_icon("DefaultProjectIcon", "EditorIcons")->get_image();
+		}
+		return icon;
+	}
+
+	Ref<Image> _get_project_splash() const {
+		Ref<Image> splash;
+		splash.instantiate();
+		const String splash_path = String(GLOBAL_GET("application/boot_splash/image")).strip_edges();
+		if (splash_path.is_empty() || ImageLoader::load_image(splash_path, splash) != OK) {
+			return Ref<Image>(memnew(Image(boot_splash_png)));
+		}
+		return splash;
+	}
+
+	Error _extract_template(const String &p_template, const String &p_dir, const String &p_name, bool pwa);
+	void _replace_strings(Map<String, String> p_replaces, Vector<uint8_t> &r_template);
+	void _fix_html(Vector<uint8_t> &p_html, const Ref<EditorExportPreset> &p_preset, const String &p_name, bool p_debug, int p_flags, const Vector<SharedObject> p_shared_objects, const Dictionary &p_file_sizes);
+	Error _add_manifest_icon(const String &p_path, const String &p_icon, int p_size, Array &r_arr);
+	Error _build_pwa(const Ref<EditorExportPreset> &p_preset, const String p_path, const Vector<SharedObject> &p_shared_objects);
+	Error _write_or_error(const uint8_t *p_content, int p_len, String p_path);
+
+	static void _server_thread_poll(void *data);
+
+public:
+	virtual void get_preset_features(const Ref<EditorExportPreset> &p_preset, List<String> *r_features) override;
+
+	virtual void get_export_options(List<ExportOption> *r_options) override;
+
+	virtual String get_name() const override;
+	virtual String get_os_name() const override;
+	virtual Ref<Texture2D> get_logo() const override;
+
+	virtual bool can_export(const Ref<EditorExportPreset> &p_preset, String &r_error, bool &r_missing_templates) const override;
+	virtual List<String> get_binary_extensions(const Ref<EditorExportPreset> &p_preset) const override;
+	virtual Error export_project(const Ref<EditorExportPreset> &p_preset, bool p_debug, const String &p_path, int p_flags = 0) override;
+
+	virtual bool poll_export() override;
+	virtual int get_options_count() const override;
+	virtual String get_option_label(int p_index) const override { return p_index ? TTR("Stop HTTP Server") : TTR("Run in Browser"); }
+	virtual String get_option_tooltip(int p_index) const override { return p_index ? TTR("Stop HTTP Server") : TTR("Run exported HTML in the system's default browser."); }
+	virtual Ref<ImageTexture> get_option_icon(int p_index) const override;
+	virtual Error run(const Ref<EditorExportPreset> &p_preset, int p_option, int p_debug_flags) override;
+	virtual Ref<Texture2D> get_run_icon() const override;
+
+	virtual void get_platform_features(List<String> *r_features) override {
+		r_features->push_back("web");
+		r_features->push_back(get_os_name());
+	}
+
+	virtual void resolve_platform_feature_priorities(const Ref<EditorExportPreset> &p_preset, Set<String> &p_features) override {
+	}
+
+	String get_debug_protocol() const override { return "ws://"; }
+
+	EditorExportPlatformJavaScript();
+	~EditorExportPlatformJavaScript();
+};
+
+#endif

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