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Fix issue where 404 errors are mistaken for server errors. (#4534)

* Fix issue where 404 errors are mistaken for server errors.

* Bump vendor.
This commit is contained in:
Teffen
2021-11-19 18:14:13 -05:00
committed by GitHub
parent db35c47315
commit bd09533f40
3 changed files with 32 additions and 10 deletions

View File

@ -8,14 +8,36 @@ import { rootPath } from "../constants"
import { replaceTemplates } from "../http"
import { escapeHtml, getMediaMime } from "../util"
const notFoundCodes = ["ENOENT", "EISDIR"]
interface ErrorWithStatusCode {
statusCode: number
}
interface ErrorWithCode {
code: string
}
/** Error is network related. */
export const errorHasStatusCode = (error: any): error is ErrorWithStatusCode => {
return error && "statusCode" in error
}
/** Error originates from file system. */
export const errorHasCode = (error: any): error is ErrorWithCode => {
return error && "code" in error
}
const notFoundCodes = [404, "ENOENT", "EISDIR"]
export const errorHandler: express.ErrorRequestHandler = async (err, req, res, next) => {
if (notFoundCodes.includes(err.code)) {
err.status = HttpCode.NotFound
let statusCode = 500
if (errorHasStatusCode(err)) {
statusCode = err.statusCode
} else if (errorHasCode(err) && notFoundCodes.includes(err.code)) {
statusCode = HttpCode.NotFound
}
const status = err.status ?? err.statusCode ?? 500
res.status(status)
res.status(statusCode)
// Assume anything that explicitly accepts text/html is a user browsing a
// page (as opposed to an xhr request). Don't use `req.accepts()` since
@ -27,8 +49,8 @@ export const errorHandler: express.ErrorRequestHandler = async (err, req, res, n
const content = await fs.readFile(resourcePath, "utf8")
res.send(
replaceTemplates(req, content)
.replace(/{{ERROR_TITLE}}/g, status)
.replace(/{{ERROR_HEADER}}/g, status)
.replace(/{{ERROR_TITLE}}/g, statusCode.toString())
.replace(/{{ERROR_HEADER}}/g, statusCode.toString())
.replace(/{{ERROR_BODY}}/g, escapeHtml(err.message)),
)
} else {