Use appSubUrl for OAuth2 callback URL tip (#28266) (#28275)

Backport #28266 by @earl-warren

- When crafting the OAuth2 callbackURL take into account `appSubUrl`,
which is quite safe given that its strictly formatted.
- No integration testing as this is all done in Javascript.
- Resolves https://codeberg.org/forgejo/forgejo/issues/1795

(cherry picked from commit 27cb6b7956136f87aa78067d9adb5a4c4ce28a24)

Co-authored-by: Earl Warren <109468362+earl-warren@users.noreply.github.com>
Co-authored-by: Gusted <postmaster@gusted.xyz>
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Giteabot 2023-11-30 08:26:47 +08:00 committed by GitHub
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@ -2,7 +2,7 @@ import $ from 'jquery';
import {checkAppUrl} from '../common-global.js';
import {hideElem, showElem, toggleElem} from '../../utils/dom.js';
const {csrfToken} = window.config;
const {csrfToken, appSubUrl} = window.config;
export function initAdminCommon() {
if ($('.page-content.admin').length === 0) {
@ -172,7 +172,8 @@ export function initAdminCommon() {
if ($('.admin.authentication').length > 0) {
$('#auth_name').on('input', function () {
$('#oauth2-callback-url').text(`${window.location.origin}/user/oauth2/${encodeURIComponent($(this).val())}/callback`);
// appSubUrl is either empty or is a path that starts with `/` and doesn't have a trailing slash.
$('#oauth2-callback-url').text(`${window.location.origin}${appSubUrl}/user/oauth2/${encodeURIComponent($(this).val())}/callback`);
}).trigger('input');
}