94 lines
2.5 KiB
TypeScript
94 lines
2.5 KiB
TypeScript
import { create, getNumericDate } from "@zaubrik/djwt";
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import { oauth2Client } from "@lib/auth.ts";
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import { getCookies, setCookie } from "@std/http/cookie";
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import { codeChallengeMap } from "./login.ts";
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import { GITEA_SERVER, JWT_SECRET, SESSION_DURATION } from "@lib/env.ts";
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import { GiteaOauthUser } from "@lib/types.ts";
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import { BadRequestError } from "@lib/errors.ts";
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import { db } from "@lib/db/sqlite.ts";
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import { userTable } from "@lib/db/schema.ts";
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import { eq } from "drizzle-orm";
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import { define } from "../../../utils.ts";
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export const handler = define.handlers({
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async GET(ctx) {
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if (!JWT_SECRET) {
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throw new BadRequestError();
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}
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// Exchange the authorization code for an access token
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const cookies = getCookies(ctx.req.headers);
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const stored = codeChallengeMap.get(cookies["code_challenge"]);
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if (!stored) {
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throw new BadRequestError();
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}
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const { codeVerifier, redirect } = stored;
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const tokens = await oauth2Client.code.getToken(ctx.req.url, {
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codeVerifier,
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});
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// Use the access token to make an authenticated API request
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const userInfo = `${GITEA_SERVER}/login/oauth/userinfo`;
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const userResponse = await fetch(userInfo, {
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headers: {
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Authorization: `token ${tokens.accessToken}`,
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},
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});
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const oauthUser = await userResponse.json() as GiteaOauthUser;
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let user = await db.select().from(userTable).where(
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eq(userTable.name, oauthUser.name),
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).limit(1).then((users) => users[0]);
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if (!user) {
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const res = await db.insert(userTable).values({
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id: crypto.randomUUID(),
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email: oauthUser.email,
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name: oauthUser.name,
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}).returning();
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user = res[0];
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}
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if (!JWT_SECRET) {
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throw new BadRequestError();
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}
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const key = await crypto.subtle.importKey(
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"raw",
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new TextEncoder().encode(JWT_SECRET),
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{ name: "HMAC", hash: "SHA-512" },
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false,
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["sign", "verify"],
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);
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const jwt = await create({ alg: "HS512", type: "JWT" }, {
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id: user.id,
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name: user.name,
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exp: getNumericDate(SESSION_DURATION),
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}, key);
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const headers = new Headers({
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location: redirect || "/",
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});
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setCookie(headers, {
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name: "session_cookie",
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value: jwt,
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path: "/",
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maxAge: SESSION_DURATION,
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httpOnly: false,
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secure: true,
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sameSite: "Lax",
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});
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return new Response(null, {
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headers,
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status: 302,
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});
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},
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});
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