From 10233dcad34157a56a5800c76829c7de2fe47c4b Mon Sep 17 00:00:00 2001
From: ejurgensen <espenjurgensen@gmail.com>
Date: Sun, 10 Dec 2017 19:50:57 +0100
Subject: [PATCH] [chromecast] Check for null address from getifaddrs() (credit
 @yantoz, issue #455)

---
 src/outputs/cast.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/outputs/cast.c b/src/outputs/cast.c
index de9ff39e..95f5e505 100644
--- a/src/outputs/cast.c
+++ b/src/outputs/cast.c
@@ -454,9 +454,21 @@ stream_url_make(char *out, size_t len, const char *peer_addr, int family)
     return -1;
 
   found = 0;
-  getifaddrs(&ifap);
+  ret = getifaddrs(&ifap);
+  if (ret < 0)
+    {
+      DPRINTF(E_LOG, L_CAST, "Could not get interface address: %s\n", strerror(errno));
+      return -1;
+    }
+
   for (ifa = ifap; !found && ifa; ifa = ifa->ifa_next)
     {
+      if (!ifa->ifa_addr)
+	{
+	  DPRINTF(E_LOG, L_CAST, "Skipping null address from getifaddrs()\n");
+	  continue;
+	}
+
       if (ifa->ifa_addr->sa_family != family)
 	continue;