Add tar endpoint

This will be used to load extensions into the browser using requirefs.

package.json

@@ -17,6 +17,7 @@
     "@coder/nbin": "^1.2.0",
     "@types/pem": "^1.9.5",
     "@types/safe-compare": "^1.1.0",
+    "@types/tar-fs": "^1.16.1",
     "@types/tar-stream": "^1.6.1",
     "nodemon": "^1.19.1"
   },
@@ -29,6 +30,7 @@
     "httpolyglot": "^0.1.2",
     "pem": "^1.14.2",
     "safe-compare": "^1.1.4",
+    "tar-fs": "^2.0.0",
     "tar-stream": "^2.1.0"
   }
 }

src/server.ts

@@ -5,6 +5,7 @@ import * as https from "https";
 import * as net from "net";
 import * as path from "path";
 import * as querystring from "querystring";
+import { Readable } from "stream";
 import * as tls from "tls";
 import * as url from "url";
 import * as util from "util";
@@ -67,6 +68,8 @@ import { AuthType, getMediaMime, getUriTransformer, localRequire, tmpdir } from
 import { RemoteExtensionLogFileName } from "vs/workbench/services/remote/common/remoteAgentService";
 import { IWorkbenchConstructionOptions } from "vs/workbench/workbench.web.api";
 
+const tarFs = localRequire<typeof import("tar-fs")>("tar-fs/index");
+
 export enum HttpCode {
 	Ok = 200,
 	Redirect = 302,
@@ -89,7 +92,9 @@ export interface Response {
 	content?: string | Buffer;
 	filePath?: string;
 	headers?: http.OutgoingHttpHeaders;
+	mime?: string;
 	redirect?: string;
+	stream?: Readable;
 }
 
 export interface LoginPayload {
@@ -185,11 +190,21 @@ export abstract class Server {
 	): Promise<Response>;
 
 	protected async getResource(...parts: string[]): Promise<Response> {
+		const filePath = this.ensureAuthorizedFilePath(...parts);
+		return { content: await util.promisify(fs.readFile)(filePath), filePath };
+	}
+
+	protected async getTarredResource(...parts: string[]): Promise<Response> {
+		const filePath = this.ensureAuthorizedFilePath(...parts);
+		return { stream: tarFs.pack(filePath), filePath, mime: "application/tar" };
+	}
+
+	protected ensureAuthorizedFilePath(...parts: string[]): string {
 		const filePath = path.join(...parts);
 		if (!this.isAllowedRequestPath(filePath)) {
 			throw new HttpError("Unauthorized", HttpCode.Unauthorized);
 		}
-		return { content: await util.promisify(fs.readFile)(filePath), filePath };
+		return filePath;
 	}
 
 	protected withBase(request: http.IncomingMessage, path: string): string {
@@ -211,13 +226,21 @@ export abstract class Server {
 			const parsedUrl = request.url ? url.parse(request.url, true) : { query: {}};
 			const payload = await this.preHandleRequest(request, parsedUrl);
 			response.writeHead(payload.redirect ? HttpCode.Redirect : payload.code || HttpCode.Ok, {
-				"Content-Type": getMediaMime(payload.filePath),
+				"Content-Type": payload.mime || getMediaMime(payload.filePath),
 				...(payload.redirect ? { Location: this.withBase(request, payload.redirect) } : {}),
 				...(request.headers["service-worker"] ? { "Service-Worker-Allowed": this.options.basePath || "/" } : {}),
 				...(payload.cache ? { "Cache-Control": "public, max-age=31536000" } : {}),
 				...payload.headers,
 			});
+			if (payload.stream) {
+				payload.stream.on("error", (error: NodeJS.ErrnoException) => {
+					response.writeHead(error.code === "ENOENT" ? HttpCode.NotFound : HttpCode.ServerError);
+					response.end(error.message);
+				});
+				payload.stream.pipe(response);
+			} else {
 				response.end(payload.content);
+			}
 		} catch (error) {
 			if (error.code === "ENOENT" || error.code === "EISDIR") {
 				error = new HttpError("Not found", HttpCode.NotFound);
@@ -484,6 +507,11 @@ export class MainServer extends Server {
 					return this.getResource(parsedUrl.query.path);
 				}
 				break;
+			case "/tar":
+				if (typeof parsedUrl.query.path === "string") {
+					return this.getTarredResource(parsedUrl.query.path);
+				}
+				break;
 			case "/webview":
 				if (requestPath.indexOf("/vscode-resource") === 0) {
 					return this.getResource(requestPath.replace(/^\/vscode-resource/, ""));

yarn.lock

@@ -35,6 +35,13 @@
   resolved "https://registry.yarnpkg.com/@types/safe-compare/-/safe-compare-1.1.0.tgz#47ed9b9ca51a3a791b431cd59b28f47fa9bf1224"
   integrity sha512-1ri+LJhh0gRxIa37IpGytdaW7yDEHeJniBSMD1BmitS07R1j63brcYCzry+l0WJvGdEKQNQ7DYXO2epgborWPw==
 
+"@types/tar-fs@^1.16.1":
+  version "1.16.1"
+  resolved "https://registry.yarnpkg.com/@types/tar-fs/-/tar-fs-1.16.1.tgz#6e3fba276c173e365ae91e55f7b797a0e64298e5"
+  integrity sha512-uQQIaa8ukcKf/1yy2kzfP1PF+7jEZghFDKpDvgtsYo/mbqM1g4Qza1Y5oAw6kJMa7eLA/HkmxUsDqb2sWKVF9g==
+  dependencies:
+    "@types/node" "*"
+
 "@types/tar-stream@^1.6.1":
   version "1.6.1"
   resolved "https://registry.yarnpkg.com/@types/tar-stream/-/tar-stream-1.6.1.tgz#67d759068ff781d976cad978893bb7a334ec8809"
@@ -480,7 +487,7 @@ duplexer3@^0.1.4:
   resolved "https://registry.yarnpkg.com/duplexer3/-/duplexer3-0.1.4.tgz#ee01dd1cac0ed3cbc7fdbea37dc0a8f1ce002ce2"
   integrity sha1-7gHdHKwO08vH/b6jfcCo8c4ALOI=
 
-end-of-stream@^1.4.1:
+end-of-stream@^1.1.0, end-of-stream@^1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/end-of-stream/-/end-of-stream-1.4.1.tgz#ed29634d19baba463b6ce6b80a37213eab71ec43"
   integrity sha512-1MkrZNvWTKCaigbn+W15elq2BB/L22nqrSY5DKlo3X6+vclJm8Bb5djXJBmEX6fS3+zCh/F4VBK5Z2KxJt4s2Q==
@@ -1293,7 +1300,7 @@ object.pick@^1.3.0:
   dependencies:
     isobject "^3.0.1"
 
-once@^1.3.0, once@^1.4.0:
+once@^1.3.0, once@^1.3.1, once@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
   integrity sha1-WDsap3WWHUsROsF9nFC6753Xa9E=
@@ -1417,6 +1424,14 @@ pstree.remy@^1.1.6:
   resolved "https://registry.yarnpkg.com/pstree.remy/-/pstree.remy-1.1.7.tgz#c76963a28047ed61542dc361aa26ee55a7fa15f3"
   integrity sha512-xsMgrUwRpuGskEzBFkH8NmTimbZ5PcPup0LA8JJkHIm2IMUbQcpo3yeLNWVrufEYjh8YwtSVh0xz6UeWc5Oh5A==
 
+pump@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/pump/-/pump-3.0.0.tgz#b4a2116815bde2f4e1ea602354e8c75565107a64"
+  integrity sha512-LwZy+p3SFs1Pytd/jYct4wpv49HiYCqd9Rlc5ZVdk0V+8Yzv6jR5Blk3TRmPL1ft69TxP0IMZGJ+WPFU2BFhww==
+  dependencies:
+    end-of-stream "^1.1.0"
+    once "^1.3.1"
+
 rc@^1.0.1, rc@^1.1.6, rc@^1.2.7:
   version "1.2.8"
   resolved "https://registry.yarnpkg.com/rc/-/rc-1.2.8.tgz#cd924bf5200a075b83c188cd6b9e211b7fc0d3ed"
@@ -1744,7 +1759,17 @@ supports-color@^5.2.0, supports-color@^5.3.0:
   dependencies:
     has-flag "^3.0.0"
 
-tar-stream@^2.1.0:
+tar-fs@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/tar-fs/-/tar-fs-2.0.0.tgz#677700fc0c8b337a78bee3623fdc235f21d7afad"
+  integrity sha512-vaY0obB6Om/fso8a8vakQBzwholQ7v5+uy+tF3Ozvxv1KNezmVQAiWtcNmMHFSFPqL3dJA8ha6gdtFbfX9mcxA==
+  dependencies:
+    chownr "^1.1.1"
+    mkdirp "^0.5.1"
+    pump "^3.0.0"
+    tar-stream "^2.0.0"
+
+tar-stream@^2.0.0, tar-stream@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/tar-stream/-/tar-stream-2.1.0.tgz#d1aaa3661f05b38b5acc9b7020efdca5179a2cc3"
   integrity sha512-+DAn4Nb4+gz6WZigRzKEZl1QuJVOLtAwwF+WUxy1fJ6X63CaGaUAxJRD2KEn1OMfcbCjySTYpNC6WmfQoIEOdw==