From 1bf4289d86388e446fda46c45acc2f05632c64ec Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Love=20H=C3=B6rnquist=20=C3=85strand?= <lha@kth.se>
Date: Mon, 25 Aug 2008 02:33:28 +0000
Subject: [PATCH] Check return value of gethostname() and truncate string.

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@23675 ec53bebd-3082-4978-b11e-865c3cabbd6b
---
 lib/krb5/principal.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/lib/krb5/principal.c b/lib/krb5/principal.c
index bcc7b23b7..3a1d184c3 100644
--- a/lib/krb5/principal.c
+++ b/lib/krb5/principal.c
@@ -1259,7 +1259,14 @@ krb5_sname_to_principal (krb5_context context,
 	return KRB5_SNAME_UNSUPP_NAMETYPE;
     }
     if(hostname == NULL) {
-	gethostname(localhost, sizeof(localhost));
+	ret = gethostname(localhost, sizeof(localhost) - 1);
+	if (ret != 0) {
+	    ret = errno;
+	    krb5_set_error_message(context, ret,
+				   "Failed to get local hostname");
+	    return ret;
+	}	    
+	localhost[sizeof(localhost) - 1] = '\0';
 	hostname = localhost;
     }
     if(sname == NULL)