From 237cdd798bebd393d7e66e04150d69e5fd27a8e8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Markus=20M=C3=A4kel=C3=A4?= <markus.makela@mariadb.com>
Date: Thu, 19 Sep 2019 10:26:23 +0300
Subject: [PATCH] MXS-2687: Detect invalid socket arguments

Cherry-pick of 5a94f09cb97d7da5ca4a71b398f14ec32e6c90e7.
---
 server/core/listener.cc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/server/core/listener.cc b/server/core/listener.cc
index de4f2d19f..281e6a409 100644
--- a/server/core/listener.cc
+++ b/server/core/listener.cc
@@ -192,6 +192,12 @@ SListener Listener::create(const std::string& name,
         address = MAXADMIN_DEFAULT_SOCKET;
         socket = address;
     }
+    else if (port == 0 && socket[0] != '/')
+    {
+        MXS_ERROR("Invalid path given for listener '%s' for parameter '%s': %s",
+                  name.c_str(), CN_SOCKET, socket.c_str());
+        return nullptr;
+    }
 
     mxb_assert(!address.empty());