From 37acf2a687a6bb06a7a05f81f16e269f0f9e070b Mon Sep 17 00:00:00 2001
From: Doug Torrance <dtorrance@monmouthcollege.edu>
Date: Tue, 19 May 2015 22:31:06 -0500
Subject: [PATCH] wmppp.app: Fix segfault when HOME undefined.

Instead, we exit with an error message.

This fixes Debian bug #716472 [1].

[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=716472
---
 wmppp.app/wmppp.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/wmppp.app/wmppp.c b/wmppp.app/wmppp.c
index 43fb696..7758eee 100644
--- a/wmppp.app/wmppp.c
+++ b/wmppp.app/wmppp.c
@@ -422,6 +422,11 @@ void wmppp_routine(int argc, char **argv) {
 	parse_rcfile(temp, wmppp_keys);
 
 	p = getenv("HOME");
+	if (p == NULL) {
+		fprintf(stderr,
+			"error: HOME environment variable not defined\n");
+		exit(EXIT_FAILURE);
+	}
 	strcpy(temp, p);
 	strcat(temp, "/.wmppprc");
 	parse_rcfile(temp, wmppp_keys);