[network-manager-openconnect/lr/ipv6: 1/4] helper: drop requirement for mandatory IPv4

[Lubomir Rintel <lkundrak src gnome org>]

commit 7ed226393b1d5dd9a6def6d39024ef3a9b317f07
Author: Lubomir Rintel <lkundrak v3 sk>
Date:   Sat Nov 19 10:21:29 2016 +0100

    helper: drop requirement for mandatory IPv4

 src/nm-openconnect-service-openconnect-helper.c |   26 ++++++++++++++--------
 1 files changed, 16 insertions(+), 10 deletions(-)
---
diff --git a/src/nm-openconnect-service-openconnect-helper.c b/src/nm-openconnect-service-openconnect-helper.c
index 40861d4..30e447a 100644
--- a/src/nm-openconnect-service-openconnect-helper.c
+++ b/src/nm-openconnect-service-openconnect-helper.c
@@ -551,18 +551,24 @@ main (int argc, char *argv[])
        }
 
        /* IPv4 address */
-       val = addr4_to_gvariant (getenv ("INTERNAL_IP4_ADDRESS"));
-       if (val)
-               g_variant_builder_add (&ip4builder, "{sv}", NM_VPN_PLUGIN_IP4_CONFIG_ADDRESS, val);
-       else
-               helper_failed (proxy, "IP4 Address");
+       tmp = getenv ("INTERNAL_IP4_ADDRESS");
+       if (tmp && strlen (tmp)) {
+               val = addr4_to_gvariant (tmp);
+               if (val)
+                       g_variant_builder_add (&ip4builder, "{sv}", NM_VPN_PLUGIN_IP4_CONFIG_ADDRESS, val);
+               else
+                       helper_failed (proxy, "IP4 Address");
+       }
 
        /* IPv4 PTP address; for openconnect PTP address == internal IPv4 address */
-       val = addr4_to_gvariant (getenv ("INTERNAL_IP4_ADDRESS"));
-       if (val)
-               g_variant_builder_add (&ip4builder, "{sv}", NM_VPN_PLUGIN_IP4_CONFIG_PTP, val);
-       else
-               helper_failed (proxy, "IP4 PTP Address");
+       tmp = getenv ("INTERNAL_IP4_ADDRESS");
+       if (tmp && strlen (tmp)) {
+               val = addr4_to_gvariant (tmp);
+               if (val)
+                       g_variant_builder_add (&ip4builder, "{sv}", NM_VPN_PLUGIN_IP4_CONFIG_PTP, val);
+               else
+                       helper_failed (proxy, "IP4 Address");
+       }
 
        /* IPv4 Netmask */
        tmp = getenv ("INTERNAL_IP4_NETMASK");