From: Mark Wooding <mdw@distorted.org.uk>
Date: Mon, 2 May 2016 21:43:31 +0000 (+0100)
Subject: noip.c (present_sockaddr): Handle a null address pointer.
X-Git-Tag: 1.2.0~39
X-Git-Url: https://git.distorted.org.uk/~mdw/preload-hacks/commitdiff_plain/ad0f7002c1f3f3cced856ed488bc3eebbadedf07

noip.c (present_sockaddr): Handle a null address pointer.

We'll want this functionality soon.
---

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);