Implement /oauth2/token endpoint; token auth middleware

src/auth/context/TokenSecurityContext.ts

@@ -0,0 +1,41 @@
+import {SecurityContext} from './SecurityContext'
+import {AuthenticatableRepository} from '../types'
+import {Awaitable} from '../../util'
+import {Inject} from '../../di'
+import {Request} from '../../http/lifecycle/Request'
+import {OAuth2Token, TokenRepository} from '../server/types'
+import {UserAuthenticationResumedEvent} from '../event/UserAuthenticationResumedEvent'
+
+export class TokenSecurityContext extends SecurityContext {
+    @Inject()
+    protected readonly request!: Request
+
+    @Inject()
+    protected readonly tokens!: TokenRepository
+
+    constructor(
+        public readonly repository: AuthenticatableRepository,
+    ) {
+        super(repository, 'token')
+    }
+
+    // eslint-disable-next-line @typescript-eslint/no-empty-function
+    persist(): Awaitable<void> {}
+
+    async resume(): Promise<void> {
+        if ( !this.request.hasInstance(OAuth2Token) ) {
+            return
+        }
+
+        const token: OAuth2Token = this.request.getExistingInstance(OAuth2Token)
+        if ( !token.userId ) {
+            return
+        }
+
+        const user = await this.repository.getByIdentifier(token.userId)
+        if ( user ) {
+            this.authenticatedUser = user
+            await this.bus.push(new UserAuthenticationResumedEvent(user, this))
+        }
+    }
+}