Conditional validation for parameter algorithm in isHash function

Signed-off-by: kushagra-raj.tiwari <[email protected]>
validatorjs · Sep 30, 2023 · c2186bd · c2186bd
1 parent c49c8f6
commit c2186bd
Showing 1 changed file with 11 additions and 1 deletion.
diff --git a/src/lib/isHash.js b/src/lib/isHash.js
@@ -1,4 +1,5 @@
 import assertString from './util/assertString';
+import validateKey from './util/validateKey';
 
 const lengths = {
   md5: 32,
@@ -16,8 +17,17 @@ const lengths = {
   crc32b: 8,
 };
 
-export default function isHash(str, algorithm) {
+
+export default function isHash(
+  str,
+  algorithm,
+  _validateAlgorithm = true
+) {
   assertString(str);
+  if (_validateAlgorithm) {
+    /* Validate hash algorithm before defining Regular expression for hash check. */
+    validateKey(lengths, algorithm, `Unknown hash algorithm: ${algorithm}`);
+  }
   const hash = new RegExp(`^[a-fA-F0-9]{${lengths[algorithm]}}$`);
   return hash.test(str);
 }