Files
archived-next-auth/src/server/lib/callback-url-handler.js
Balázs Orbán 44ffd55fe2 refactor: code base improvements 3 (#1072)
* refactor: extend res.{end,send,json}, redirect

* refactor: chain res methods, remove unnecessary ones

* refactor: simplify oauth callback signature

* refactor: code simplifications

* refactor: re-export everything from routes in one

* refactor: split up main index.js to multiple files

* refactor: simplify passing of provider(s) around

* refactor: extend req with callbackUrl inline

* refactor: simplify page rendering

* refactor: move error page redirects to main file, simplify renderer

* refactor: inline req.options definition

* refactor: simplify error fallbacks

* refactor: remove else branches and unnecessary try..catch

* refactor: add docs, and simplify jwt functions

* refactor: prefer errors object over switch..case in signin page

* feat: log all params sent to logger instead of only first

* refactor: fewer lines input validation

* refactor: remove even more unnecessary else branches
2021-01-10 20:15:25 +01:00

34 lines
1.5 KiB
JavaScript

import * as cookie from '../lib/cookie'
/**
* Get callback URL based on query param / cookie + validation,
* and add it to `req.options.callbackUrl`.
* @note: `req.options` must already be defined when called.
*/
export default async function callbackUrlHandler (req, res) {
const { query } = req
const { body } = req
const { cookies, baseUrl, defaultCallbackUrl, callbacks } = req.options
// Handle preserving and validating callback URLs
// If no defaultCallbackUrl option specified, default to the homepage for the site
let callbackUrl = defaultCallbackUrl || baseUrl
// Try reading callbackUrlParamValue from request body (form submission) then from query param (get request)
const callbackUrlParamValue = body.callbackUrl || query.callbackUrl || null
const callbackUrlCookieValue = req.cookies[cookies.callbackUrl.name] || null
if (callbackUrlParamValue) {
// If callbackUrl form field or query parameter is passed try to use it if allowed
callbackUrl = await callbacks.redirect(callbackUrlParamValue, baseUrl)
} else if (callbackUrlCookieValue) {
// If no callbackUrl specified, try using the value from the cookie if allowed
callbackUrl = await callbacks.redirect(callbackUrlCookieValue, baseUrl)
}
// Save callback URL in a cookie so that can be used for subsequent requests in signin/signout/callback flow
if (callbackUrl && (callbackUrl !== callbackUrlCookieValue)) {
cookie.set(res, cookies.callbackUrl.name, callbackUrl, cookies.callbackUrl.options)
}
req.options.callbackUrl = callbackUrl
}