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code-server/server.ts

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import * as fs from "fs";
import * as http from "http";
import * as net from "net";
import * as path from "path";
import * as util from "util";
import * as url from "url";
import { Emitter } from "vs/base/common/event";
import { sanitizeFilePath } from "vs/base/common/extpath";
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import { getMediaMime } from "vs/base/common/mime";
import { extname } from "vs/base/common/path";
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import { UriComponents, URI } from "vs/base/common/uri";
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import { IPCServer, ClientConnectionEvent } from "vs/base/parts/ipc/common/ipc";
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import { LogsDataCleaner } from "vs/code/electron-browser/sharedProcess/contrib/logsDataCleaner";
import { IEnvironmentService, ParsedArgs } from "vs/platform/environment/common/environment";
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import { EnvironmentService } from "vs/platform/environment/node/environmentService";
import { InstantiationService } from "vs/platform/instantiation/common/instantiationService";
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import { ServiceCollection } from "vs/platform/instantiation/common/serviceCollection";
import { getLogLevel, ILogService } from "vs/platform/log/common/log";
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import { LogLevelSetterChannel } from "vs/platform/log/common/logIpc";
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import { SpdLogService } from "vs/platform/log/node/spdlogService";
import { IProductConfiguration } from "vs/platform/product/common/product";
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import product from "vs/platform/product/node/product";
import { ConnectionType, ConnectionTypeRequest } from "vs/platform/remote/common/remoteAgentConnection";
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import { REMOTE_FILE_SYSTEM_CHANNEL_NAME } from "vs/platform/remote/common/remoteAgentFileSystemChannel";
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import { RemoteExtensionLogFileName } from "vs/workbench/services/remote/common/remoteAgentService";
import { IWorkbenchConstructionOptions } from "vs/workbench/workbench.web.api";
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import { Connection, ManagementConnection, ExtensionHostConnection } from "vs/server/connection";
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import { ExtensionEnvironmentChannel, FileProviderChannel, getUriTransformer } from "vs/server/channel";
import { Protocol } from "vs/server/protocol";
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export enum HttpCode {
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Ok = 200,
NotFound = 404,
BadRequest = 400,
}
export interface Options {
WORKBENCH_WEB_CONGIGURATION: IWorkbenchConstructionOptions;
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REMOTE_USER_DATA_URI: UriComponents | URI;
PRODUCT_CONFIGURATION: IProductConfiguration | null;
CONNECTION_AUTH_TOKEN: string;
}
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export class HttpError extends Error {
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public constructor(message: string, public readonly code: number) {
super(message);
// @ts-ignore
this.name = this.constructor.name;
Error.captureStackTrace(this, this.constructor);
}
}
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export abstract class Server {
// The underlying web server.
protected readonly server: http.Server;
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private listenPromise: Promise<string> | undefined;
public constructor(private readonly port: number) {
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this.server = http.createServer(async (request, response): Promise<void> => {
try {
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if (request.method !== "GET") {
throw new HttpError(
`Unsupported method ${request.method}`,
HttpCode.BadRequest,
);
}
const parsedUrl = url.parse(request.url || "", true);
const requestPath = parsedUrl.pathname || "/";
const [content, headers] = await this.handleRequest(request, parsedUrl, requestPath);
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response.writeHead(HttpCode.Ok, {
"Cache-Control": "max-age=86400",
// TODO: ETag?
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...headers,
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});
response.end(content);
} catch (error) {
response.writeHead(typeof error.code === "number" ? error.code : 500);
response.end(error.message);
}
});
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}
protected abstract handleRequest(
request: http.IncomingMessage,
parsedUrl: url.UrlWithParsedQuery,
requestPath: string,
): Promise<[string | Buffer, http.OutgoingHttpHeaders]>;
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public listen(): Promise<string> {
if (!this.listenPromise) {
this.listenPromise = new Promise((resolve, reject) => {
this.server.on("error", reject);
this.server.listen(this.port, () => {
resolve(this.address());
});
});
}
return this.listenPromise;
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}
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public address(): string {
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const address = this.server.address();
const endpoint = typeof address !== "string"
? ((address.address === "::" ? "localhost" : address.address) + ":" + address.port)
: address;
return `http://${endpoint}`;
}
}
export class MainServer extends Server {
// Used to notify the IPC server that there is a new client.
public readonly _onDidClientConnect = new Emitter<ClientConnectionEvent>();
public readonly onDidClientConnect = this._onDidClientConnect.event;
private readonly rootPath = path.resolve(__dirname, "../../..");
// This is separate instead of just extending this class since we can't
// use properties in the super call. This manages channels.
private readonly ipc = new IPCServer(this.onDidClientConnect);
// Persistent connections. These can reconnect within a timeout.
private readonly connections = new Map<ConnectionType, Map<string, Connection>>();
private readonly services = new ServiceCollection();
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public constructor(port: number, private readonly webviewServer: WebviewServer, args: ParsedArgs) {
super(port);
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this.server.on("upgrade", async (request, socket) => {
const protocol = this.createProtocol(request, socket);
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try {
await this.connect(await protocol.handshake(), protocol);
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} catch (error) {
protocol.dispose(error);
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}
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});
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const environmentService = new EnvironmentService(args, process.execPath);
this.services.set(IEnvironmentService, environmentService);
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const logService = new SpdLogService(
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RemoteExtensionLogFileName,
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environmentService.logsPath,
getLogLevel(environmentService),
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);
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this.services.set(ILogService, logService);
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this.ipc.registerChannel("loglevel", new LogLevelSetterChannel(logService));
const instantiationService = new InstantiationService(this.services);
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instantiationService.invokeFunction(() => {
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instantiationService.createInstance(LogsDataCleaner);
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this.ipc.registerChannel(
REMOTE_FILE_SYSTEM_CHANNEL_NAME,
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new FileProviderChannel(logService),
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);
this.ipc.registerChannel(
"remoteextensionsenvironment",
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new ExtensionEnvironmentChannel(environmentService, logService),
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);
});
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}
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protected async handleRequest(
request: http.IncomingMessage,
parsedUrl: url.UrlWithParsedQuery,
requestPath: string,
): Promise<[string | Buffer, http.OutgoingHttpHeaders]> {
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if (requestPath === "/") {
const htmlPath = path.join(
this.rootPath,
'out/vs/code/browser/workbench/workbench.html',
);
let html = await util.promisify(fs.readFile)(htmlPath, "utf8");
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const remoteAuthority = request.headers.host as string;
const transformer = getUriTransformer(remoteAuthority);
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const webviewEndpoint = await this.webviewServer.listen();
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const cwd = process.env.VSCODE_CWD || process.cwd();
const workspacePath = parsedUrl.query.workspace as string | undefined;
const folderPath = !workspacePath ? parsedUrl.query.folder as string | undefined || cwd: undefined;
const options: Options = {
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WORKBENCH_WEB_CONGIGURATION: {
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workspaceUri: workspacePath
? transformer.transformOutgoing(URI.file(sanitizeFilePath(workspacePath, cwd)))
: undefined,
folderUri: folderPath
? transformer.transformOutgoing(URI.file(sanitizeFilePath(folderPath, cwd)))
: undefined,
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remoteAuthority,
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webviewEndpoint,
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},
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REMOTE_USER_DATA_URI: transformer.transformOutgoing(
(this.services.get(IEnvironmentService) as EnvironmentService).webUserDataHome,
),
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PRODUCT_CONFIGURATION: product,
CONNECTION_AUTH_TOKEN: "",
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};
Object.keys(options).forEach((key) => {
html = html.replace(`"{{${key}}}"`, `'${JSON.stringify(options[key])}'`);
});
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html = html.replace('{{WEBVIEW_ENDPOINT}}', webviewEndpoint);
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return [html, {
"Content-Type": "text/html",
}];
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}
try {
const content = await util.promisify(fs.readFile)(
path.join(this.rootPath, requestPath),
);
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return [content, {
"Content-Type": getMediaMime(requestPath) || {
".css": "text/css",
".html": "text/html",
".js": "text/javascript",
".json": "application/json",
}[extname(requestPath)] || "text/plain",
}];
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} catch (error) {
if (error.code === "ENOENT" || error.code === "EISDIR") {
throw new HttpError("Not found", HttpCode.NotFound);
}
throw error;
}
}
private createProtocol(request: http.IncomingMessage, socket: net.Socket): Protocol {
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if (request.headers.upgrade !== "websocket") {
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throw new Error("HTTP/1.1 400 Bad Request");
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}
const options = {
reconnectionToken: "",
reconnection: false,
skipWebSocketFrames: false,
};
if (request.url) {
const query = url.parse(request.url, true).query;
if (query.reconnectionToken) {
options.reconnectionToken = query.reconnectionToken as string;
}
if (query.reconnection === "true") {
options.reconnection = true;
}
if (query.skipWebSocketFrames === "true") {
options.skipWebSocketFrames = true;
}
}
return new Protocol(
request.headers["sec-websocket-key"] as string,
socket,
options,
);
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}
private async connect(message: ConnectionTypeRequest, protocol: Protocol): Promise<void> {
switch (message.desiredConnectionType) {
case ConnectionType.ExtensionHost:
case ConnectionType.Management:
const debugPort = await this.getDebugPort();
const ok = message.desiredConnectionType === ConnectionType.ExtensionHost
? (debugPort ? { debugPort } : {})
: { type: "ok" };
if (!this.connections.has(message.desiredConnectionType)) {
this.connections.set(message.desiredConnectionType, new Map());
}
const connections = this.connections.get(message.desiredConnectionType)!;
const token = protocol.options.reconnectionToken;
if (protocol.options.reconnection && connections.has(token)) {
protocol.sendMessage(ok);
const buffer = protocol.readEntireBuffer();
protocol.dispose();
return connections.get(token)!.reconnect(protocol, buffer);
}
if (protocol.options.reconnection || connections.has(token)) {
throw new Error(protocol.options.reconnection
? "Unrecognized reconnection token"
: "Duplicate reconnection token"
);
}
protocol.sendMessage(ok);
let connection: Connection;
if (message.desiredConnectionType === ConnectionType.Management) {
connection = new ManagementConnection(protocol);
this._onDidClientConnect.fire({
protocol,
onDidClientDisconnect: connection.onClose,
});
} else {
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connection = new ExtensionHostConnection(
protocol, this.services.get(ILogService) as ILogService,
);
}
connections.set(protocol.options.reconnectionToken, connection);
connection.onClose(() => {
connections.delete(protocol.options.reconnectionToken);
});
break;
case ConnectionType.Tunnel: return protocol.tunnel();
default: throw new Error("Unrecognized connection type");
}
}
/**
* TODO: implement.
*/
private async getDebugPort(): Promise<number | undefined> {
return undefined;
}
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}
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export class WebviewServer extends Server {
protected async handleRequest(): Promise<[string | Buffer, http.OutgoingHttpHeaders]> {
throw new Error("not implemented");
}
}