JWuCines commented on code in PR #19432:
URL: https://github.com/apache/druid/pull/19432#discussion_r3894690631


##########
extensions-core/druid-basic-security/src/main/java/org/apache/druid/security/basic/authentication/validator/LDAPCredentialsValidator.java:
##########
@@ -237,22 +247,90 @@ SearchResult getLdapUserObject(BasicAuthLDAPConfig 
ldapConfig, DirContext contex
           ldapConfig.getBaseDn(),
           StringUtils.format(ldapConfig.getUserSearch(), encodedUsername),
           sc);
+      final SearchResult userResult;
       try {
         if (!results.hasMore()) {
           return null;
         }
-        return results.next();
+        userResult = results.next();
       }
       finally {
         results.close();
       }
+      return userResult;
     }
     catch (NamingException e) {
       LOG.debug(e, "Unable to find user '%s'", username);
       return null;
     }
   }
 
+  private static boolean hasMemberOfAttribute(SearchResult userResult)
+  {
+    return userResult.getAttributes() != null
+        && userResult.getAttributes().get("memberOf") != null;
+  }
+
+  @SuppressWarnings("BanJNDI")
+  private void enrichWithGroupSearch(SearchResult userResult)
+  {
+    final ClassLoader currentClassLoader = 
Thread.currentThread().getContextClassLoader();
+    InitialDirContext dirContext = null;
+    try {
+      
Thread.currentThread().setContextClassLoader(this.getClass().getClassLoader());
+      dirContext = new InitialDirContext(bindProperties(this.ldapConfig));
+
+      final String userDn = userResult.getNameInNamespace();
+      final SearchControls sc = new SearchControls();
+      sc.setSearchScope(SearchControls.SUBTREE_SCOPE);
+      sc.setReturningAttributes(new String[]{"1.1"});
+
+      final String filter = 
StringUtils.format(this.ldapConfig.getGroupSearch(), encodeForLDAP(userDn, 
true));

Review Comment:
   Added a fix to enforce "%s" placeholder in groupSearch



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