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metamigo-api/app/plugins/cloudflare-jwt.ts

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+import * as Boom from "@hapi/boom";
+import * as Hoek from "@hapi/hoek";
+import * as Hapi from "@hapi/hapi";
+import { promisify } from "util";
+import jwt from "jsonwebtoken";
+import jwksClient, { hapiJwt2KeyAsync } from "jwks-rsa";
+import type { IAppConfig } from "../../config";
+
+const CF_JWT_HEADER_NAME = "cf-access-jwt-assertion";
+const CF_JWT_ALGOS = ["RS256"];
+
+const verifyToken = (settings: any) => {
+  const { audience, issuer } = settings;
+  const client = jwksClient({
+    jwksUri: `${issuer}/cdn-cgi/access/certs`,
+  });
+
+  return async (token: any) => {
+    const getKey = (header: any, callback: any) => {
+      client.getSigningKey(header.kid, (err, key) => {
+        if (err)
+          throw Boom.serverUnavailable(
+            "failed to fetch cloudflare access jwks"
+          );
+        callback(undefined, key?.getPublicKey());
+      });
+    };
+
+    const opts = {
+      algorithms: CF_JWT_ALGOS,
+      audience,
+      issuer,
+    };
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    return (promisify(jwt.verify) as any)(token, getKey, opts);
+  };
+};
+
+const handleCfJwt = (verify: any) => async (
+  request: Hapi.Request,
+  h: Hapi.ResponseToolkit
+) => {
+  const token = request.headers[CF_JWT_HEADER_NAME];
+  if (token) {
+    try {
+      await verify(token);
+    } catch (error) {
+      console.error(error);
+      return Boom.unauthorized("invalid cloudflare access token");
+    }
+  }
+
+  return h.continue;
+};
+
+const defaultOpts = {
+  issuer: undefined,
+  audience: undefined,
+  strategyName: "clouflareaccess",
+  validate: undefined,
+};
+
+const cfJwtRegister = async (server: Hapi.Server, options: any): Promise<void> => {
+  server.dependency(["hapi-auth-jwt2"]);
+  const settings = Hoek.applyToDefaults(defaultOpts, options);
+  const verify = verifyToken(settings);
+
+  const { validate, strategyName, audience, issuer } = settings;
+  server.ext("onPreAuth", handleCfJwt(verify));
+
+  server.auth.strategy(strategyName!, "jwt", {
+    key: hapiJwt2KeyAsync({
+      jwksUri: `${issuer}/cdn-cgi/access/certs`,
+    }),
+    cookieKey: false,
+    urlKey: false,
+    headerKey: CF_JWT_HEADER_NAME,
+    validate,
+    verifyOptions: {
+      audience,
+      issuer,
+      algorithms: ["RS256"],
+    },
+  });
+};
+
+export const registerCloudflareAccessJwt = async (
+  server: Hapi.Server,
+  config: IAppConfig
+): Promise<void> => {
+  const { audience, domain } = config.cfaccess;
+  // only enable this plugin if cloudflare access config is configured
+  if (audience && domain) {
+    server.log(["auth"], "cloudflare access authorization enabled");
+    await server.register({
+      plugin: {
+        name: "cloudflare-jwt",
+        version: "0.0.1",
+        register: cfJwtRegister,
+      },
+      options: {
+        issuer: `https://${domain}`,
+        audience,
+        validate: (decoded: any, _request: any) => {
+          const { email, name } = decoded;
+          return {
+            isValid: true,
+            credentials: { user: { email, name } },
+          };
+        },
+      },
+    });
+  }
+};

metamigo-api/app/plugins/hapi-nextauth.ts

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+import type * as Hapi from "@hapi/hapi";
+import NextAuthPlugin, { AdapterFactory } from "@digiresilience/hapi-nextauth";
+import { NextAuthAdapter } from "common";
+import type { SavedUser, UnsavedUser, SavedSession } from "common";
+import { IAppConfig } from "config";
+
+export const registerNextAuth = async (
+  server: Hapi.Server,
+  config: IAppConfig
+): Promise<void> => {
+  // I'm not sure why I need to be so explicit with the generic types here
+  // I thought ts could figure out the generics based on the concrete params, but apparently not
+  const nextAuthAdapterFactory: AdapterFactory<
+    SavedUser,
+    UnsavedUser,
+    SavedSession
+  > = (request: Hapi.Request) => new NextAuthAdapter(request.db());
+
+  await server.register({
+    plugin: NextAuthPlugin,
+    options: {
+      nextAuthAdapterFactory,
+      sharedSecret: config.nextAuth.secret,
+    },
+  });
+};

metamigo-api/app/plugins/index.ts

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+import type * as Hapi from "@hapi/hapi";
+import Schmervice from "@hapipal/schmervice";
+import PgPromisePlugin from "@digiresilience/hapi-pg-promise";
+
+import type { IAppConfig } from "../../config";
+import { dbInitOptions } from "db";
+import { registerNextAuth } from "./hapi-nextauth";
+import { registerSwagger } from "./swagger";
+import { registerNextAuthJwt } from "./nextauth-jwt";
+import { registerCloudflareAccessJwt } from "./cloudflare-jwt";
+
+export const register = async (
+  server: Hapi.Server,
+  config: IAppConfig
+): Promise<void> => {
+  await server.register(Schmervice);
+
+  await server.register({
+    plugin: PgPromisePlugin,
+    options: {
+      // the only required parameter is the connection string
+      connection: config.db.connection,
+      // ... and the pg-promise initialization options
+      pgpInit: dbInitOptions(config),
+    },
+  });
+
+  await registerNextAuth(server, config);
+  await registerSwagger(server);
+  await registerNextAuthJwt(server, config);
+  await registerCloudflareAccessJwt(server, config);
+};

metamigo-api/app/plugins/nextauth-jwt.ts

@@ -0,0 +1,100 @@
+import * as Hoek from "@hapi/hoek";
+import * as Hapi from "@hapi/hapi";
+import type { IAppConfig } from "../../config";
+
+// hapi-auth-jwt2 expects the key to be a raw key
+const jwkToHapiAuthJwt2 = (jwkString) => {
+  try {
+    const jwk = JSON.parse(jwkString);
+    return Buffer.from(jwk.k, "base64");
+  } catch {
+    throw new Error(
+      "Failed to parse key for JWT verification. This is probably an application configuration error."
+    );
+  }
+};
+
+const jwtDefaults = {
+  jwkeysB64: undefined,
+  validate: undefined,
+  strategyName: "nextauth-jwt",
+};
+
+const jwtRegister = async (server: Hapi.Server, options): Promise<void> => {
+  server.dependency(["hapi-auth-jwt2"]);
+  const settings: any = Hoek.applyToDefaults(jwtDefaults, options);
+  const key = settings.jwkeysB64.map((k) => jwkToHapiAuthJwt2(k));
+
+  server.auth.strategy(settings.strategyName!, "jwt", {
+    key,
+    cookieKey: false,
+    urlKey: false,
+    validate: settings.validate,
+  });
+};
+
+export const registerNextAuthJwt = async (
+  server: Hapi.Server,
+  config: IAppConfig
+): Promise<void> => {
+  if (config.nextAuth.signingKey) {
+    await server.register({
+      plugin: {
+        name: "nextauth-jwt",
+        version: "0.0.2",
+        register: jwtRegister,
+      },
+      options: {
+        jwkeysB64: [config.nextAuth.signingKey],
+        validate: async (decoded, request: Hapi.Request) => {
+          const { email, name, role } = decoded;
+          const user = await request.db().users.findBy({ email });
+          if (!config.isProd) {
+            server.logger.info(
+              {
+                email,
+                name,
+                role,
+              },
+              "nextauth-jwt authorizing request"
+            );
+            // server.logger.info({ user }, "nextauth-jwt user result");
+          }
+
+          return {
+            isValid: Boolean(user && user.isActive),
+            // this credentials object is made available in every request
+            // at `request.auth.credentials`
+            credentials: { email, name, role },
+          };
+        },
+      },
+    });
+  } else if (config.isProd) {
+    throw new Error("Missing nextauth.signingKey configuration value.");
+  } else {
+    server.log(
+      ["warn"],
+      "Missing nextauth.signingKey configuration value. Authentication of nextauth endpoints disabled!"
+    );
+  }
+};
+
+// @hapi/jwt expects the key in its own format
+/* UNUSED
+const _jwkToHapiJwt = (jwkString) => {
+  try {
+    const jwk = JSON.parse(jwkString);
+    const rawKey = Buffer.from(jwk.k, "base64");
+    return {
+      key: rawKey,
+      algorithms: [jwk.alg],
+      kid: jwk.kid,
+    };
+  } catch {
+    throw new Error(
+      "Failed to parse key for JWT verification. This is probably an application configuration error."
+    );
+  }
+};
+*/

metamigo-api/app/plugins/swagger.ts

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+import * as Inert from "@hapi/inert";
+import * as Vision from "@hapi/vision";
+import type * as Hapi from "@hapi/hapi";
+import * as HapiSwagger from "hapi-swagger";
+
+export const registerSwagger = async (server: Hapi.Server): Promise<void> => {
+  const swaggerOptions: HapiSwagger.RegisterOptions = {
+    info: {
+      title: "Metamigo API Docs",
+      description: "part of CDR Link",
+      version: "0.1",
+    },
+    // group sets of endpoints by tag
+    tags: [
+      {
+        name: "users",
+        description: "API for Users",
+      },
+    ],
+    documentationRouteTags: ["swagger"],
+    documentationPath: "/api-docs",
+  };
+
+  await server.register([
+    { plugin: Inert },
+    { plugin: Vision },
+    {
+      plugin: HapiSwagger,
+      options: swaggerOptions,
+    },
+  ]);
+};