From f1ee94f9276d01de13aabc2d248d1b1923a00157 Mon Sep 17 00:00:00 2001
From: Justin Maggard <jmaggard@netgear.com>
Date: Thu, 9 Jul 2009 22:59:13 +0000
Subject: [PATCH] * Prevent a segmentation fault if $LOGNAME is not set during
 startup.

---
 minidlna.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/minidlna.c b/minidlna.c
index 2af6ff1..42d2daf 100644
--- a/minidlna.c
+++ b/minidlna.c
@@ -25,6 +25,7 @@
 #include <sys/param.h>
 #include <errno.h>
 #include <pthread.h>
+#include <pwd.h>
 
 /* unix sockets */
 #include "config.h"
@@ -183,7 +184,16 @@ getfriendlyname(char * buf, int len)
 	#ifdef READYNAS
 	strncat(buf, "ReadyNAS", len-strlen(buf)-1);
 	#else
-	strncat(buf, getenv("LOGNAME"), len-strlen(buf)-1);
+	char * logname;
+	logname = getenv("LOGNAME");
+	if( !logname )
+	{
+		struct passwd * pwent;
+		pwent = getpwuid(getuid());
+		if( pwent )
+			logname = pwent->pw_name;
+	}
+	strncat(buf, logname?logname:"Unknown", len-strlen(buf)-1);
 	#endif
 }