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November 21, 2022 23:00
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connectkit-next-auth
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| import { IncomingMessage } from "http"; | |
| import { NextApiRequest, NextApiResponse } from "next"; | |
| import NextAuth, { type NextAuthOptions } from "next-auth"; | |
| import CredentialsProvider from "next-auth/providers/credentials"; | |
| import { getCsrfToken } from "next-auth/react"; | |
| import { SiweMessage } from "siwe"; | |
| export function getAuthOptions(req: IncomingMessage): NextAuthOptions { | |
| const providers = [ | |
| CredentialsProvider({ | |
| async authorize(credentials) { | |
| console.log(credentials); | |
| try { | |
| const siwe = new SiweMessage( | |
| JSON.parse(credentials?.message || "{}") | |
| ); | |
| const nextAuthUrl = | |
| process.env.NEXTAUTH_URL || | |
| (process.env.VERCEL_URL | |
| ? `https://${process.env.VERCEL_URL}` | |
| : null); | |
| if (!nextAuthUrl) { | |
| return null; | |
| } | |
| const nextAuthHost = new URL(nextAuthUrl).host; | |
| if (siwe.domain !== nextAuthHost) { | |
| return null; | |
| } | |
| if (siwe.nonce !== (await getCsrfToken({ req }))) { | |
| return null; | |
| } | |
| await siwe.validate(credentials?.signature || ""); | |
| return { | |
| id: siwe.address, | |
| }; | |
| } catch (e) { | |
| return null; | |
| } | |
| }, | |
| credentials: { | |
| message: { | |
| label: "Message", | |
| placeholder: "0x0", | |
| type: "text", | |
| }, | |
| signature: { | |
| label: "Signature", | |
| placeholder: "0x0", | |
| type: "text", | |
| }, | |
| }, | |
| name: "Ethereum", | |
| }), | |
| ]; | |
| return { | |
| callbacks: { | |
| async session({ session, token }) { | |
| console.log(session, token); | |
| const address = token.sub || ""; | |
| session.address = address; | |
| session.chainId = 1; | |
| session.wallets = { | |
| ...session.wallets, | |
| eth: address, | |
| }; | |
| return session; | |
| }, | |
| }, | |
| providers, | |
| secret: process.env.NEXTAUTH_SECRET, | |
| session: { | |
| strategy: "jwt", | |
| }, | |
| }; | |
| } | |
| export default async function auth(req: NextApiRequest, res: NextApiResponse) { | |
| const authOptions = getAuthOptions(req); | |
| if (!Array.isArray(req.query.nextauth)) { | |
| res.status(400).send("Bad request"); | |
| return; | |
| } | |
| const isDefaultSigninPage = | |
| req.method === "GET" && | |
| req.query.nextauth.find((value) => value === "signin"); | |
| // Hide Sign-In with Ethereum from default sign page | |
| if (isDefaultSigninPage) { | |
| authOptions.providers.pop(); | |
| } | |
| return await NextAuth(req, res, authOptions); | |
| } |
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| import { SIWEConfig } from "connectkit/build/components/Standard/SIWE/SIWEContext"; | |
| export const siweConfig: SIWEConfig = { | |
| createMessage: ({ address, chainId, nonce }) => { | |
| return new SiweMessage({ | |
| version: "1", | |
| domain: window.location.host, | |
| uri: window.location.origin, | |
| address, | |
| chainId, | |
| nonce, | |
| statement: "Sign in with Ethereum.", | |
| }).prepareMessage(); | |
| }, | |
| getSession: async () => { | |
| const session = await getSession(); | |
| if (!session) return null; | |
| return session; | |
| }, | |
| getNonce: async () => { | |
| const nonce = await getCsrfToken(); | |
| if (!nonce) throw new Error(); | |
| return nonce; | |
| }, | |
| signOut: async () => { | |
| try { | |
| await signOut({ redirect: false }); | |
| return true; | |
| } catch (error) { | |
| console.error(error); | |
| return false; | |
| } | |
| }, | |
| verifyMessage: async ({ message, signature }) => { | |
| const response = await signIn("credentials", { | |
| message: JSON.stringify(message), | |
| redirect: false, | |
| signature, | |
| }); | |
| return response?.ok ?? false; | |
| }, | |
| }; |
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