auth-backend: move prepareBackstageIdentityResponse to auth-node

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

plugins/auth-backend/src/providers/prepareBackstageIdentityResponse.ts

@@ -14,39 +14,11 @@
  * limitations under the License.
  */
 
-import { InputError } from '@backstage/errors';
-import {
-  BackstageIdentityResponse,
-  BackstageSignInResult,
-} from '@backstage/plugin-auth-node';
-
-function parseJwtPayload(token: string) {
-  const [_header, payload, _signature] = token.split('.');
-  return JSON.parse(Buffer.from(payload, 'base64').toString());
-}
+import { prepareBackstageIdentityResponse as _prepareBackstageIdentityResponse } from '@backstage/plugin-auth-node';
 
 /**
- * Parses a Backstage-issued token and decorates the
- * {@link @backstage/plugin-auth-node#BackstageIdentityResponse} with identity information sourced from the
- * token.
- *
  * @public
+ * @deprecated import from `@backstage/plugin-auth-node` instead
  */
-export function prepareBackstageIdentityResponse(
-  result: BackstageSignInResult,
-): BackstageIdentityResponse {
-  if (!result.token) {
-    throw new InputError(`Identity response must return a token`);
-  }
-
-  const { sub, ent } = parseJwtPayload(result.token);
-
-  return {
-    ...result,
-    identity: {
-      type: 'user',
-      userEntityRef: sub,
-      ownershipEntityRefs: ent ?? [],
-    },
-  };
-}
+export const prepareBackstageIdentityResponse =
+  _prepareBackstageIdentityResponse;

plugins/auth-node/src/identity/index.ts

@@ -0,0 +1,17 @@
+/*
+ * Copyright 2023 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export { prepareBackstageIdentityResponse } from './prepareBackstageIdentityResponse';

plugins/auth-node/src/identity/prepareBackstageIdentityResponse.ts

@@ -0,0 +1,52 @@
+/*
+ * Copyright 2020 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { InputError } from '@backstage/errors';
+import {
+  BackstageIdentityResponse,
+  BackstageSignInResult,
+} from '@backstage/plugin-auth-node';
+
+function parseJwtPayload(token: string) {
+  const [_header, payload, _signature] = token.split('.');
+  return JSON.parse(Buffer.from(payload, 'base64').toString());
+}
+
+/**
+ * Parses a Backstage-issued token and decorates the
+ * {@link @backstage/plugin-auth-node#BackstageIdentityResponse} with identity information sourced from the
+ * token.
+ *
+ * @public
+ */
+export function prepareBackstageIdentityResponse(
+  result: BackstageSignInResult,
+): BackstageIdentityResponse {
+  if (!result.token) {
+    throw new InputError(`Identity response must return a token`);
+  }
+
+  const { sub, ent } = parseJwtPayload(result.token);
+
+  return {
+    ...result,
+    identity: {
+      type: 'user',
+      userEntityRef: sub,
+      ownershipEntityRefs: ent ?? [],
+    },
+  };
+}

plugins/auth-node/src/index.ts

@@ -20,6 +20,7 @@
  * @packageDocumentation
  */
 
+export * from './identity';
 export { getBearerTokenFromAuthorizationHeader } from './getBearerTokenFromAuthorizationHeader';
 export { DefaultIdentityClient } from './DefaultIdentityClient';
 export { IdentityClient } from './IdentityClient';