Add some extra checks to dhclient callout script

diff --git a/scripts/dhclient-script.c b/scripts/dhclient-script.c
index 841cde3..35ede29 100644 (file)
--- a/scripts/dhclient-script.c
+++ b/scripts/dhclient-script.c
@@ -66,10 +66,16 @@ int main(int argc, char *argv[])
        busintf = getenv("BUSINTF");
        buspath = getenv("BUSPATH");
 
+       if (busname == NULL || busintf == NULL || buspath == NULL)
+               return 0;
+
        pid = atoi(getenv("pid"));
        reason = getenv("reason");
        interface = getenv("interface");
 
+       if (pid == 0 || reason == NULL)
+               return 0;
+
        dbus_error_init(&error);
 
        conn = dbus_bus_get(DBUS_BUS_SYSTEM, &error);