Adding string length validation check to the zap UI to warn the user when the...

Adding string length validation check to the zap UI to warn the user when the values exceed the allowed length of the string
Github: ZAP#379

src-electron/validation/validation.js

@@ -87,6 +87,17 @@ function validateSpecificAttribute(endpointAttribute, attribute) {
       if (!checkAttributeBoundsInteger(attribute, endpointAttribute))
         defaultAttributeIssues.push('Out of range')
     }
+  } else if (types.isString(attribute.type)) {
+    let maxLengthForString =
+      attribute.type == 'char_string' || attribute.type == 'octet_string'
+        ? 255
+        : 65536
+    let maxAllowedLength = attribute.maxLength
+      ? attribute.maxLength
+      : maxLengthForString
+    if (endpointAttribute.defaultValue.length > maxAllowedLength) {
+      defaultAttributeIssues.push('String length out of range')
+    }
   }
   return { defaultValue: defaultAttributeIssues }
 }