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code-server-2/src/node/routes/static.ts
2020-11-04 17:07:39 -06:00

65 lines
2.2 KiB
TypeScript

import { field, logger } from "@coder/logger"
import { Router } from "express"
import { promises as fs } from "fs"
import * as path from "path"
import { Readable } from "stream"
import * as tarFs from "tar-fs"
import * as zlib from "zlib"
import { HttpCode, HttpError } from "../../common/http"
import { rootPath } from "../constants"
import { authenticated, replaceTemplates } from "../http"
import { getMediaMime, pathToFsPath } from "../util"
export const router = Router()
// The commit is for caching.
router.get("/(:commit)(/*)?", async (req, res) => {
if (!req.params[0]) {
throw new HttpError("Not Found", HttpCode.NotFound)
}
const resourcePath = path.resolve(req.params[0])
// Make sure it's in code-server if you aren't authenticated. This lets
// unauthenticated users load the login assets.
if (!resourcePath.startsWith(rootPath) && !authenticated(req)) {
throw new HttpError("Unauthorized", HttpCode.Unauthorized)
}
// Don't cache during development. - can also be used if you want to make a
// static request without caching.
if (req.params.commit !== "development" && req.params.commit !== "-") {
res.header("Cache-Control", "public, max-age=31536000")
}
/**
* Used by VS Code to load extensions into the web worker.
*/
const tar = Array.isArray(req.query.tar) ? req.query.tar[0] : req.query.tar
if (typeof tar === "string") {
let stream: Readable = tarFs.pack(pathToFsPath(tar))
if (req.headers["accept-encoding"] && req.headers["accept-encoding"].includes("gzip")) {
logger.debug("gzipping tar", field("path", resourcePath))
const compress = zlib.createGzip()
stream.pipe(compress)
stream.on("error", (error) => compress.destroy(error))
stream.on("close", () => compress.end())
stream = compress
res.header("content-encoding", "gzip")
}
res.set("Content-Type", "application/x-tar")
stream.on("close", () => res.end())
return stream.pipe(res)
}
res.set("Content-Type", getMediaMime(resourcePath))
if (resourcePath.endsWith("manifest.json")) {
const content = await fs.readFile(resourcePath, "utf8")
return res.send(replaceTemplates(req, content))
}
const content = await fs.readFile(resourcePath)
return res.send(content)
})