refactor(server): env validation (#13817)

server/src/validation.ts

@@ -25,6 +25,7 @@ import {
 import { CronJob } from 'cron';
 import { DateTime } from 'luxon';
 import sanitize from 'sanitize-filename';
+import { isIP, isIPRange } from 'validator';
 
 @Injectable()
 export class ParseMeUUIDPipe extends ParseUUIDPipe {
@@ -228,3 +229,32 @@ export function MaxDateString(
     validationOptions,
   );
 }
+
+type IsIPRangeOptions = { requireCIDR?: boolean };
+export function IsIPRange(options: IsIPRangeOptions, validationOptions?: ValidationOptions): PropertyDecorator {
+  const { requireCIDR } = { requireCIDR: true, ...options };
+
+  return ValidateBy(
+    {
+      name: 'isIPRange',
+      validator: {
+        validate: (value): boolean => {
+          if (isIPRange(value)) {
+            return true;
+          }
+
+          if (!requireCIDR && isIP(value)) {
+            return true;
+          }
+
+          return false;
+        },
+        defaultMessage: buildMessage(
+          (eachPrefix) => eachPrefix + '$property must be an ip address, or ip address range',
+          validationOptions,
+        ),
+      },
+    },
+    validationOptions,
+  );
+}