From 76dd72ba94b10800c397a94ec08d91cc545cbfb3 Mon Sep 17 00:00:00 2001
From: david <david@e0a8ed71-7df4-0310-8962-fdc924857419>
Date: Thu, 4 Sep 2008 14:36:48 +0000
Subject: [PATCH] Add a guard against getaddrinfo returning an empty list of
 addresses in l_nsock_connect. It hasn't been reported to cause problems but
 will cause a crash if it ever happens.

---
 nse_nsock.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/nse_nsock.cc b/nse_nsock.cc
index 37496cff7..484580017 100644
--- a/nse_nsock.cc
+++ b/nse_nsock.cc
@@ -451,6 +451,11 @@ static int l_nsock_connect(lua_State *L) {
 		lua_pushstring(L, error);
 		return 2;
 	}
+        if (dest == NULL) {
+		lua_pushboolean(L, false);
+		lua_pushstring(L, "getaddrinfo returned success but no addresses");
+		return 2;
+        }
 
 	udata->nsiod = nsi_new(nsp, NULL);
 	if (o.spoofsource) {