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refactor: decouple Next.js from core (#2857)
* refactor: decouple Next.js from core (WIP) * refactor: use `base` instead of `baseUrl`+`basePath` * fix: signout route * refactor(ts): convert files to TS * fix: imports * refactor: convert callback route * fix: add `next` files to package * chore(dev): alias npm email * refactor: do not merge req with user options * refactor: rename userOptions to options * refactor: use native `URL` in `parseUrl` * refactor: move Next.js specific code to `next` module * refactor(ts): return `OutgoingResponse` on all routes * fix: change `base` to `url` * feat: introduce `getServerSession` * refactor: move main logic to `handler` file * chore(dev): showcase `getServerSession` * feat: extract `sessionToken` from Authorization header * fix: pass headers to getServerSession * refactor: rename `server` to `core` * refactor: re-export `next-auth/next` in `next-auth` * fix: add `core` to npm package * fix: re-export default method * feat: return `body`+`header` instead of `json`,`text` * feat: pass `NEXTAUTH_URL` as a variable to core * refactor: simplify Next.js wrapper * feat: export `client/_utils` * fix(ts): suppress TS errors
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,210 @@ | ||
| import logger from "../lib/logger" | ||
| import * as routes from "./routes" | ||
| import renderPage from "./pages" | ||
| import type { NextAuthOptions } from "./types" | ||
| import { init } from "./init" | ||
| import { Cookie } from "./lib/cookie" | ||
|
|
||
| import { NextAuthAction } from "../lib/types" | ||
|
|
||
| export interface IncomingRequest { | ||
| /** @default "http://localhost:3000" */ | ||
| host?: string | ||
| method: string | ||
| cookies?: Record<string, any> | ||
| headers?: Record<string, any> | ||
| query?: Record<string, any> | ||
| body?: Record<string, any> | ||
| action: NextAuthAction | ||
| providerId?: string | ||
| error?: string | ||
| } | ||
|
|
||
| export interface NextAuthHeader { | ||
| key: string | ||
| value: string | ||
| } | ||
|
|
||
| export interface OutgoingResponse< | ||
| Body extends string | Record<string, any> | any[] = any | ||
| > { | ||
| status?: number | ||
| headers?: NextAuthHeader[] | ||
| body?: Body | ||
| redirect?: string | ||
| cookies?: Cookie[] | ||
| } | ||
|
|
||
| interface NextAuthHandlerParams { | ||
| req: IncomingRequest | ||
| options: NextAuthOptions | ||
| } | ||
|
|
||
| export async function NextAuthHandler< | ||
| Body extends string | Record<string, any> | any[] | ||
| >(params: NextAuthHandlerParams): Promise<OutgoingResponse<Body>> { | ||
| const { options: userOptions, req } = params | ||
| const { action, providerId, error } = req | ||
|
|
||
| const { options, cookies } = await init({ | ||
| userOptions, | ||
| action, | ||
| providerId, | ||
| host: req.host, | ||
| callbackUrl: req.body?.callbackUrl ?? req.query?.callbackUrl, | ||
| csrfToken: req.body?.csrfToken, | ||
| cookies: req.cookies, | ||
| isPost: req.method === "POST", | ||
| }) | ||
|
|
||
| const sessionToken = | ||
| req.cookies?.[options.cookies.sessionToken.name] || | ||
| req.headers?.Authorization?.replace("Bearer ", "") | ||
|
|
||
| const codeVerifier = req.cookies?.[options.cookies.pkceCodeVerifier.name] | ||
|
|
||
| if (req.method === "GET") { | ||
| const render = renderPage({ options, query: req.query, cookies }) | ||
| const { pages } = options | ||
| switch (action) { | ||
| case "providers": | ||
| return (await routes.providers(options.providers)) as any | ||
| case "session": | ||
| return (await routes.session({ options, sessionToken })) as any | ||
| case "csrf": | ||
| return { | ||
| headers: [{ key: "Content-Type", value: "application/json" }], | ||
| body: { csrfToken: options.csrfToken } as any, | ||
| cookies, | ||
| } | ||
| case "signin": | ||
| if (pages.signIn) { | ||
| let signinUrl = `${pages.signIn}${ | ||
| pages.signIn.includes("?") ? "&" : "?" | ||
| }callbackUrl=${options.callbackUrl}` | ||
| if (error) signinUrl = `${signinUrl}&error=${error}` | ||
| return { redirect: signinUrl, cookies } | ||
| } | ||
|
|
||
| return render.signin() | ||
| case "signout": | ||
| if (pages.signOut) return { redirect: pages.signOut, cookies } | ||
|
|
||
| return render.signout() | ||
| case "callback": | ||
| if (options.provider) { | ||
| const callback = await routes.callback({ | ||
| body: req.body, | ||
| query: req.query, | ||
| method: req.method, | ||
| headers: req.headers, | ||
| options, | ||
| sessionToken, | ||
| codeVerifier, | ||
| }) | ||
| if (callback.cookies) cookies.push(...callback.cookies) | ||
| return { ...callback, cookies } | ||
| } | ||
| break | ||
| case "verify-request": | ||
| if (pages.verifyRequest) { | ||
| return { redirect: pages.verifyRequest, cookies } | ||
| } | ||
| return render.verifyRequest() | ||
| case "error": | ||
| if (pages.error) { | ||
| return { | ||
| redirect: `${pages.error}${ | ||
| pages.error.includes("?") ? "&" : "?" | ||
| }error=${error}`, | ||
| cookies, | ||
| } | ||
| } | ||
|
|
||
| // These error messages are displayed in line on the sign in page | ||
| if ( | ||
| [ | ||
| "Signin", | ||
| "OAuthSignin", | ||
| "OAuthCallback", | ||
| "OAuthCreateAccount", | ||
| "EmailCreateAccount", | ||
| "Callback", | ||
| "OAuthAccountNotLinked", | ||
| "EmailSignin", | ||
| "CredentialsSignin", | ||
| "SessionRequired", | ||
| ].includes(error as string) | ||
| ) { | ||
| return { redirect: `${options.url}/signin?error=${error}`, cookies } | ||
| } | ||
|
|
||
| return render.error({ error }) | ||
| default: | ||
| } | ||
| } else if (req.method === "POST") { | ||
| switch (action) { | ||
| case "signin": | ||
| // Verified CSRF Token required for all sign in routes | ||
| if (options.csrfTokenVerified && options.provider) { | ||
| const signin = await routes.signin({ | ||
| query: req.query, | ||
| body: req.body, | ||
| options, | ||
| }) | ||
| if (signin.cookies) cookies.push(...signin.cookies) | ||
| return { ...signin, cookies } | ||
| } | ||
|
|
||
| return { redirect: `${options.url}/signin?csrf=true`, cookies } | ||
| case "signout": | ||
| // Verified CSRF Token required for signout | ||
| if (options.csrfTokenVerified) { | ||
| const signout = await routes.signout({ options, sessionToken }) | ||
| if (signout.cookies) cookies.push(...signout.cookies) | ||
| return { ...signout, cookies } | ||
| } | ||
| return { redirect: `${options.url}/signout?csrf=true`, cookies } | ||
| case "callback": | ||
| if (options.provider) { | ||
| // Verified CSRF Token required for credentials providers only | ||
| if ( | ||
| options.provider.type === "credentials" && | ||
| !options.csrfTokenVerified | ||
| ) { | ||
| return { redirect: `${options.url}/signin?csrf=true`, cookies } | ||
| } | ||
|
|
||
| const callback = await routes.callback({ | ||
| body: req.body, | ||
| query: req.query, | ||
| method: req.method, | ||
| headers: req.headers, | ||
| options, | ||
| sessionToken, | ||
| codeVerifier, | ||
| }) | ||
| if (callback.cookies) cookies.push(...callback.cookies) | ||
| return { ...callback, cookies } | ||
| } | ||
| break | ||
| case "_log": | ||
| if (userOptions.logger) { | ||
| try { | ||
| const { code, level, ...metadata } = req.body ?? {} | ||
| logger[level](code, metadata) | ||
| } catch (error) { | ||
| // If logging itself failed... | ||
| logger.error("LOGGER_ERROR", error) | ||
| } | ||
| } | ||
| return {} | ||
| default: | ||
| } | ||
| } | ||
|
|
||
| return { | ||
| status: 400, | ||
| body: `Error: Action ${action} with HTTP ${req.method} is not supported by NextAuth.js` as any, | ||
| } | ||
| } |
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