3 files changed, 17 insertions, 12 deletions

diff --git a/src/containers/settings/EditServiceScreen.js b/src/containers/settings/EditServiceScreen.js
index b84c0d5bb..ef907dcb8 100644
--- a/src/containers/settings/EditServiceScreen.js
+++ b/src/containers/settings/EditServiceScreen.js
@@ -267,7 +267,7 @@ class EditServiceScreen extends Component {
       Object.assign(config.fields, {
         customUrl: {
           label: intl.formatMessage(messages.customUrl),
-          placeholder: 'https://',
+          placeholder: "'http://' or 'https://' or 'file:///'",
           value: service.customUrl || recipe.serviceURL,
           validators: [required, url],
         },
diff --git a/src/helpers/url-helpers.ts b/src/helpers/url-helpers.ts
index 135f06cbf..c1ca3ab25 100644
--- a/src/helpers/url-helpers.ts
+++ b/src/helpers/url-helpers.ts
@@ -1,7 +1,7 @@
 // This is taken from: https://benjamin-altpeter.de/shell-openexternal-dangers/
 
 import { URL } from 'url';
-import { ensureDirSync } from 'fs-extra';
+import { ensureDirSync, existsSync } from 'fs-extra';
 import { shell } from 'electron';
 
 import { ALLOWED_PROTOCOLS } from '../config';
@@ -23,6 +23,10 @@ export function isValidExternalURL(url: string | URL) {
   return isAllowed;
 }
 
+export function isValidFileUrl(path: string) {
+  return path.startsWith('file') && existsSync(new URL(path));
+}
+
 export async function openPath(folderName: string) {
   ensureDirSync(folderName);
   shell.openPath(folderName);
diff --git a/src/helpers/validation-helpers.ts b/src/helpers/validation-helpers.ts
index 23c297443..dfaf199ee 100644
--- a/src/helpers/validation-helpers.ts
+++ b/src/helpers/validation-helpers.ts
@@ -1,5 +1,6 @@
 import { defineMessages } from 'react-intl';
 import isEmail from 'validator/lib/isEmail';
+import { isValidExternalURL, isValidFileUrl } from './url-helpers';
 
 const messages = defineMessages({
   required: {
@@ -47,17 +48,17 @@ export function email({ field }) {
 
 export function url({ field }) {
   const value = field.value.trim();
-  let isValid = false;
+  let isValid = true;
 
-  isValid =
-    value !== ''
-      ? Boolean(
-          // eslint-disable-next-line unicorn/better-regex
-          /(^|[\s.:;?\-\]<(])(https?:\/\/[-\w;/?:@&=+$|_.!~*|'()[\]%#,☺]+[\w/#](\(\))?)(?=$|[\s',|().:;?\-[\]>)])/i.test(
-            value,
-          ),
-        )
-      : true;
+  if (value !== '') {
+    if (value.startsWith('http')) {
+      isValid = isValidExternalURL(value);
+    } else if (value.startsWith('file')) {
+      isValid = isValidFileUrl(value);
+    } else {
+      isValid = false;
+    }
+  }
 
   return [
     isValid,