refactored isAuthorized & implemented a new role & rights based system

backend/src/auth/CustomJwtPayload.ts

@@ -0,0 +1,5 @@
+import { JwtPayload } from 'jsonwebtoken'
+
+export interface CustomJwtPayload extends JwtPayload {
+  pubKey: Buffer
+}

backend/src/auth/INALIENABLE_RIGHTS.ts

@@ -0,0 +1,13 @@
+import { RIGHTS } from './RIGHTS'
+
+export const INALIENABLE_RIGHTS = [
+  RIGHTS.LOGIN,
+  RIGHTS.GET_COMMUNITY_INFO,
+  RIGHTS.COMMUNITIES,
+  RIGHTS.LOGIN_VIA_EMAIL_VERIFICATION_CODE,
+  RIGHTS.CREATE_USER,
+  RIGHTS.SEND_RESET_PASSWORD_EMAIL,
+  RIGHTS.RESET_PASSWORD,
+  RIGHTS.CHECK_USERNAME,
+  RIGHTS.CHECK_EMAIL,
+]

backend/src/auth/RIGHTS.ts

@@ -0,0 +1,23 @@
+export enum RIGHTS {
+  LOGIN = 'LOGIN',
+  BALANCE = 'BALANCE',
+  GET_COMMUNITY_INFO = 'GET_COMMUNITY_INFO',
+  COMMUNITIES = 'COMMUNITIES',
+  LIST_GDT_ENTRIES = 'LIST_GDT_ENTRIES',
+  EXIST_PID = 'EXIST_PID',
+  GET_KLICKTIPP_USER = 'GET_KLICKTIPP_USER',
+  GET_KLICKTIPP_TAG_MAP = 'GET_KLICKTIPP_TAG_MAP',
+  UNSUBSCRIBE_NEWSLETTER = 'UNSUBSCRIBE_NEWSLETTER',
+  SUBSCRIBE_NEWSLETTER = 'SUBSCRIBE_NEWSLETTER',
+  TRANSACTION_LIST = 'TRANSACTION_LIST',
+  SEND_COINS = 'SEND_COINS',
+  LOGIN_VIA_EMAIL_VERIFICATION_CODE = 'LOGIN_VIA_EMAIL_VERIFICATION_CODE',
+  LOGOUT = 'LOGOUT',
+  CREATE_USER = 'CREATE_USER',
+  SEND_RESET_PASSWORD_EMAIL = 'SEND_RESET_PASSWORD_EMAIL',
+  RESET_PASSWORD = 'RESET_PASSWORD',
+  UPDATE_USER_INFOS = 'UPDATE_USER_INFOS',
+  CHECK_USERNAME = 'CHECK_USERNAME',
+  CHECK_EMAIL = 'CHECK_EMAIL',
+  HAS_ELOPAGE = 'HAS_ELOPAGE',
+}

backend/src/auth/ROLES.ts

@@ -0,0 +1,24 @@
+import { INALIENABLE_RIGHTS } from './INALIENABLE_RIGHTS'
+import { RIGHTS } from './RIGHTS'
+import { Role } from './Role'
+
+// TODO from database
+export const ROLES = [
+  new Role('unauthorized', INALIENABLE_RIGHTS), // inalienable rights
+  new Role('user', [
+    ...INALIENABLE_RIGHTS,
+    RIGHTS.BALANCE,
+    RIGHTS.LIST_GDT_ENTRIES,
+    RIGHTS.EXIST_PID,
+    RIGHTS.GET_KLICKTIPP_USER,
+    RIGHTS.GET_KLICKTIPP_TAG_MAP,
+    RIGHTS.UNSUBSCRIBE_NEWSLETTER,
+    RIGHTS.SUBSCRIBE_NEWSLETTER,
+    RIGHTS.TRANSACTION_LIST,
+    RIGHTS.SEND_COINS,
+    RIGHTS.LOGOUT,
+    RIGHTS.UPDATE_USER_INFOS,
+    RIGHTS.HAS_ELOPAGE,
+  ]),
+  new Role('admin', Object.values(RIGHTS)), // all rights
+]

backend/src/auth/Role.ts

@@ -0,0 +1,11 @@
+import { RIGHTS } from './RIGHTS'
+
+export class Role {
+  id: string
+  rights: RIGHTS[]
+
+  constructor(id: string, rights: RIGHTS[]) {
+    this.id = id
+    this.rights = rights
+  }
+}

backend/src/auth/hasRight.ts

@@ -0,0 +1,6 @@
+import { RIGHTS } from './RIGHTS'
+import { Role } from './Role'
+
+export const hasRight = (right: RIGHTS, role: Role): boolean => {
+  return role.rights.includes(right)
+}

backend/src/graphql/directive/isAuthorized.ts

@@ -2,19 +2,36 @@
 
 import { AuthChecker } from 'type-graphql'
 
-import decode from '../../jwt/decode'
-import encode from '../../jwt/encode'
+import { decode, encode } from '../../auth/JWT'
+import { ROLES } from '../../auth/ROLES'
+import { hasRight } from '../../auth/hasRight'
+import { RIGHTS } from '../../auth/RIGHTS'
 
-const isAuthorized: AuthChecker<any> = async (
-  { /* root, args, */ context /*, info */ } /*, roles */,
-) => {
+const isAuthorized: AuthChecker<any> = async ({ context }, rights) => {
+  context.role = ROLES[0] // unauthorized user
+
+  // Do we have a token?
   if (context.token) {
     const decoded = decode(context.token)
-    context.pubKey = Buffer.from(decoded.pubKey).toString('hex')
-    context.setHeaders.push({ key: 'token', value: encode(decoded.pubKey) })
-    return true
+    if (!decoded) {
+      // we always throw on an invalid token
+      throw new Error('403.13 - Client certificate revoked')
     }
+    // Set context pubKey
+    context.pubKey = Buffer.from(decoded.pubKey).toString('hex')
+    // set new header token
+    context.setHeaders.push({ key: 'token', value: encode(decoded.pubKey) })
+    // TODO - load from database dynamically & admin - maybe encode this in the token to prevent many database requests
+    context.role = ROLES[1] // logged in user
+  }
+
+  // check for correct rights
+  const missingRights = (<RIGHTS[]>rights).filter((right) => !hasRight(right, context.role))
+  if (missingRights.length !== 0) {
     throw new Error('401 Unauthorized')
   }
 
+  return true
+}
+
 export default isAuthorized