Check bundled packages when querying package info in getInfo API

x-pack/plugins/fleet/server/services/epm/registry/index.ts

@@ -24,6 +24,7 @@ import type {
   RegistrySearchResults,
   GetCategoriesRequest,
   PackageVerificationResult,
+  ArchivePackage,
 } from '../../../types';
 import {
   getArchiveFilelist,
@@ -159,7 +160,10 @@ export async function fetchFindLatestPackageOrUndefined(
   }
 }
 
-export async function fetchInfo(pkgName: string, pkgVersion: string): Promise<RegistryPackage> {
+export async function fetchInfo(
+  pkgName: string,
+  pkgVersion: string
+): Promise<RegistryPackage | ArchivePackage> {
   const registryUrl = getRegistryUrl();
   try {
     // Trailing slash avoids 301 redirect / extra hop
@@ -168,6 +172,18 @@ export async function fetchInfo(pkgName: string, pkgVersion: string): Promise<Re
     return res;
   } catch (err) {
     if (err instanceof RegistryResponseError && err.status === 404) {
+      // Check bundled packages in case the exact package being requested is available on disk
+      const bundledPackage = await getBundledPackageByName(pkgName);
+
+      if (bundledPackage && bundledPackage.version === pkgVersion) {
+        const archivePackage = await generatePackageInfoFromArchiveBuffer(
+          bundledPackage.buffer,
+          'application/zip'
+        );
+
+        return archivePackage.packageInfo;
+      }
+
       throw new PackageNotFoundError(`${pkgName}@${pkgVersion} not found`);
     }
     throw err;