From ad0f7002c1f3f3cced856ed488bc3eebbadedf07 Mon Sep 17 00:00:00 2001
Message-Id: <ad0f7002c1f3f3cced856ed488bc3eebbadedf07.1714834131.git.mdw@distorted.org.uk>
From: Mark Wooding <mdw@chiark.greenend.org.uk>
Date: Mon, 2 May 2016 22:43:31 +0100
Subject: [PATCH] noip.c (present_sockaddr): Handle a null address pointer.
Organization: Straylight/Edgeware

From: Mark Wooding <mdw@distorted.org.uk>

We'll want this functionality soon.
---
 noip.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/noip.c b/noip.c
index 12c9f9c..e7f13cd 100644
--- a/noip.c
+++ b/noip.c
@@ -409,6 +409,7 @@ static char *present_sockaddr(const struct sockaddr *sa, socklen_t len,
 #define WANT(n_) do { if (sz < (n_)) goto nospace; } while (0)
 #define PUTC(c_) do { *buf++ = (c_); sz--; } while (0)
 
+  if (!sa) return "<null-address>";
   if (!sz) return "<no-space-in-buffer>";
   if (!len) len = family_socklen(sa->sa_family);
 
-- 
[mdw]