#399

frontend/src/lib/postImportStorage.ts

@@ -150,10 +150,27 @@ const sanitiseResetSnapshot = (value: unknown): PostImportResetSnapshot | null =
     if (!(Object.values (value.attributes).every (entry =>
 	typeof entry === 'string' || typeof entry === 'number')))
       return null
+    if (!(isPlainObject (value.provenance)))
+      return null
+    if (!(hasOnlyKeys (value.provenance, PROVENANCE_KEYS)))
+      return null
+    if (!(Object.values (value.provenance).every (origin => isValidOrigin (origin))))
+      return null
+    if (!(isPlainObject (value.tagSources)))
+      return null
+    if (!(hasOnlyKeys (value.tagSources, TAG_SOURCE_KEYS)))
+      return null
+    if (!(Object.values (value.tagSources).every (_1 => typeof _1 === 'string')))
+      return null
+    if (value.metadataUrl != null && typeof value.metadataUrl !== 'string')
+      return null
 
     return {
 	url: value.url,
-	attributes: value.attributes as Record<string, string | number> }
+	attributes: value.attributes as Record<string, string | number>,
+	provenance: value.provenance as Record<string, PostImportOrigin>,
+	tagSources: value.tagSources as Record<PostImportOrigin, string>,
+	metadataUrl: value.metadataUrl as string | undefined }
 }