utils: add nm_utils_is_specific_hostname()

The function detects whether the hostname is a specific hostname diferrent
from default hostnames like localhost, localhost[6].localdomain[6].

src/NetworkManagerUtils.c

@@ -15,7 +15,7 @@
  * with this program; if not, write to the Free Software Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
- * Copyright (C) 2004 - 2012 Red Hat, Inc.
+ * Copyright (C) 2004 - 2014 Red Hat, Inc.
  * Copyright (C) 2005 - 2008 Novell, Inc.
  */
 
@@ -1574,3 +1574,17 @@ fail:
 	g_error ("FATAL: Failed asserting path component: %s", name ? name : "(null)");
 }
 
+gboolean
+nm_utils_is_specific_hostname (const char *name)
+{
+	if (!name)
+		return FALSE;
+	if (   strcmp (name, "(none)")
+	    && strcmp (name, "localhost")
+	    && strcmp (name, "localhost6")
+	    && strcmp (name, "localhost.localdomain")
+	    && strcmp (name, "localhost6.localdomain6"))
+		return TRUE;
+	return FALSE;
+}
+

src/NetworkManagerUtils.h

@@ -15,7 +15,7 @@
  * with this program; if not, write to the Free Software Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
- * Copyright (C) 2004 - 2011 Red Hat, Inc.
+ * Copyright (C) 2004 - 2014 Red Hat, Inc.
  * Copyright (C) 2005 - 2008 Novell, Inc.
  */
 
@@ -134,4 +134,6 @@ gint32 nm_utils_get_monotonic_timestamp_s (void);
 const char *ASSERT_VALID_PATH_COMPONENT (const char *name) G_GNUC_WARN_UNUSED_RESULT;
 const char *nm_utils_ip6_property_path (const char *ifname, const char *property);
 
+gboolean nm_utils_is_specific_hostname (const char *name);
+
 #endif /* NETWORK_MANAGER_UTILS_H */