Function httpError

coderd/coderdtest/oidctest/idp.go:1745–1771

httpError handles better formatted custom errors.

(rw http.ResponseWriter, defaultCode int, err error)

// httpError handles better formatted custom errors.
func httpError(rw http.ResponseWriter, defaultCode int, err error) {
	status := defaultCode

	var statusErr statusHookError
	if errors.As(err, &statusErr) {
		status = statusErr.HTTPStatusCode
	}

	var oauthErr *oauth2.RetrieveError
	if errors.As(err, &oauthErr) {
		if oauthErr.Response.StatusCode != 0 {
			status = oauthErr.Response.StatusCode
		}

		rw.Header().Set("Content-Type", "application/x-www-form-urlencoded; charset=utf-8")
		form := url.Values{
			"error":             {oauthErr.ErrorCode},
			"error_description": {oauthErr.ErrorDescription},
			"error_uri":         {oauthErr.ErrorURI},
		}
		rw.WriteHeader(status)
		_, _ = rw.Write([]byte(form.Encode()))
		return
	}

	http.Error(rw, err.Error(), status)
}

type fakeRoundTripper struct {
	roundTrip func(req *http.Request) (*http.Response, error)