From dea15b5892e2448329947ba8d5da655f67ff03f9 Mon Sep 17 00:00:00 2001
From: Bernardo Damele <bernardo.damele@gmail.com>
Date: Tue, 22 Jan 2013 18:28:48 +0000
Subject: [PATCH] notify user if --udf-inject is provided but no stacked
 queries SQLi is detected

---
 lib/takeover/udf.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/lib/takeover/udf.py b/lib/takeover/udf.py
index cb91154c2..6f4868efd 100644
--- a/lib/takeover/udf.py
+++ b/lib/takeover/udf.py
@@ -165,10 +165,13 @@ class UDF:
 
     def udfInjectCustom(self):
         if Backend.getIdentifiedDbms() not in (DBMS.MYSQL, DBMS.PGSQL):
-            errMsg = "UDF injection feature is not yet implemented on %s" % Backend.getIdentifiedDbms()
-            raise SqlmapUnsupportedFeatureException(errMsg)
+            errMsg = "UDF injection feature only works on MySQL and PostgreSQL"
+            logger.error(errMsg)
+            return
 
         if not isTechniqueAvailable(PAYLOAD.TECHNIQUE.STACKED) and not conf.direct:
+            errMsg = "UDF injection feature requires stacked queries SQL injection"
+            logger.error(errMsg)
             return
 
         self.checkDbmsOs()