feat: Support acl authorization for IDP components

Configuration has been updated so the IDP requests
also pass through an Authorization component.
A new config option was added to choose
which authorization scheme to use for the IDP.

src/authentication/EmptyCredentialsExtractor.ts

@@ -1,21 +0,0 @@
-import type { HttpRequest } from '../server/HttpRequest';
-import { NotImplementedHttpError } from '../util/errors/NotImplementedHttpError';
-import { CredentialGroup } from './Credentials';
-import type { CredentialSet } from './Credentials';
-import { CredentialsExtractor } from './CredentialsExtractor';
-
-/**
- * Extracts the empty credentials, indicating an unauthenticated agent.
- */
-export class EmptyCredentialsExtractor extends CredentialsExtractor {
-  public async canHandle({ headers }: HttpRequest): Promise<void> {
-    const { authorization } = headers;
-    if (authorization) {
-      throw new NotImplementedHttpError('Unexpected Authorization scheme.');
-    }
-  }
-
-  public async handle(): Promise<CredentialSet> {
-    return { [CredentialGroup.public]: {}};
-  }
-}

src/authentication/PublicCredentialsExtractor.ts

@@ -0,0 +1,12 @@
+import { CredentialGroup } from './Credentials';
+import type { CredentialSet } from './Credentials';
+import { CredentialsExtractor } from './CredentialsExtractor';
+
+/**
+ * Extracts the public credentials, to be used for data everyone has access to.
+ */
+export class PublicCredentialsExtractor extends CredentialsExtractor {
+  public async handle(): Promise<CredentialSet> {
+    return { [CredentialGroup.public]: {}};
+  }
+}