[network-manager-applet/bg/applet-wireguard] applet: support activating WireGuard connections as VPNs

[Beniamino Galvani <bgalvani src gnome org>]

commit 01fba3c9368747db227f4a185b84ffcc5e7022a2
Author: Beniamino Galvani <bgalvani redhat com>
Date:   Thu Feb 11 09:45:00 2021 +0100

    applet: support activating WireGuard connections as VPNs
    
    Display WireGuard connections in the VPN submenu and allow
    [de]activating them.
    
    https://gitlab.gnome.org/GNOME/network-manager-applet/-/issues/77

 src/applet.c | 65 +++++++++++++++++++++++++++++++++++++++++-------------------
 1 file changed, 45 insertions(+), 20 deletions(-)
---
diff --git a/src/applet.c b/src/applet.c
index 8ebac755..8cf6dc43 100644
--- a/src/applet.c
+++ b/src/applet.c
@@ -875,6 +875,13 @@ applet_is_any_device_activating (NMApplet *applet)
        return FALSE;
 }
 
+static gboolean
+connection_is_vpn (NMConnection *connection)
+{
+       return    nm_connection_is_type (connection, NM_SETTING_VPN_SETTING_NAME)
+              || nm_connection_is_type (connection, NM_SETTING_WIREGUARD_SETTING_NAME);
+}
+
 static gboolean
 applet_is_any_vpn_activating (NMApplet *applet)
 {
@@ -1062,10 +1069,13 @@ nma_menu_vpn_item_clicked (GtkMenuItem *item, gpointer user_data)
                return;
        }
 
-       active = applet_get_default_active_connection (applet, &device, FALSE);
-       if (!active || !device) {
-               g_warning ("%s: no active connection or device.", __func__);
-               return;
+       if (nm_connection_is_type (connection, NM_SETTING_VPN_SETTING_NAME)) {
+               active = applet_get_default_active_connection (applet, &device, FALSE);
+               if (!active || !device) {
+                       /* FIXME: show a UI notification ? */
+                       g_warning ("%s: no active connection or device.", __func__);
+                       return;
+               }
        }
 
        info = g_malloc0 (sizeof (VPNActivateInfo));
@@ -1076,7 +1086,7 @@ nma_menu_vpn_item_clicked (GtkMenuItem *item, gpointer user_data)
        nm_client_activate_connection_async (applet->nm_client,
                                             connection,
                                             device,
-                                            nm_object_get_path (NM_OBJECT (active)),
+                                            active ? nm_object_get_path (NM_OBJECT (active)) : NULL,
                                             NULL,
                                             activate_vpn_cb,
                                             info);
@@ -1112,6 +1122,25 @@ nma_menu_add_vpn_item_activate (GtkMenuItem *item, gpointer user_data)
        g_spawn_async (NULL, (gchar **) argv, NULL, 0, NULL, NULL, NULL, NULL);
 }
 
+static NMVpnConnectionState
+ac_state_to_vpn_state (NMActiveConnectionState ac_state)
+{
+       switch (ac_state) {
+       case NM_ACTIVE_CONNECTION_STATE_UNKNOWN:
+               return NM_VPN_CONNECTION_STATE_UNKNOWN;
+       case NM_ACTIVE_CONNECTION_STATE_ACTIVATING:
+               return NM_VPN_CONNECTION_STATE_PREPARE;
+       case NM_ACTIVE_CONNECTION_STATE_ACTIVATED:
+       case NM_ACTIVE_CONNECTION_STATE_DEACTIVATING:
+               return NM_VPN_CONNECTION_STATE_ACTIVATED;
+       case NM_ACTIVE_CONNECTION_STATE_DEACTIVATED:
+               return NM_VPN_CONNECTION_STATE_DISCONNECTED;
+       }
+
+       nm_assert_not_reached ();
+       return NM_VPN_CONNECTION_STATE_UNKNOWN;
+}
+
 /*
  * applet_get_active_vpn_connection:
  *
@@ -1121,7 +1150,7 @@ nma_menu_add_vpn_item_activate (GtkMenuItem *item, gpointer user_data)
  */
 static NMActiveConnection *
 applet_get_active_vpn_connection (NMApplet *applet,
-                                        NMVpnConnectionState *out_state)
+                                  NMVpnConnectionState *out_state)
 {
        const GPtrArray *active_list;
        NMActiveConnection *ret = NULL;
@@ -1132,7 +1161,6 @@ applet_get_active_vpn_connection (NMApplet *applet,
        for (i = 0; active_list && (i < active_list->len); i++) {
                NMActiveConnection *candidate;
                NMConnection *connection;
-               NMSettingConnection *s_con;
 
                candidate = g_ptr_array_index (active_list, i);
 
@@ -1140,17 +1168,20 @@ applet_get_active_vpn_connection (NMApplet *applet,
                if (!connection)
                        continue;
 
-               s_con = nm_connection_get_setting_connection (connection);
-               if (!s_con)
+               if (!connection_is_vpn (connection))
                        continue;
 
-               if (!strcmp (nm_setting_connection_get_connection_type (s_con), NM_SETTING_VPN_SETTING_NAME)) 
{
-                       ret = candidate;
+               ret = candidate;
+               if (nm_connection_is_type (connection, NM_SETTING_VPN_SETTING_NAME)) {
                        state = nm_vpn_connection_get_vpn_state (NM_VPN_CONNECTION (candidate));
+               } else {
+                       NMActiveConnectionState ac_state;
 
-                       if (state != NM_VPN_CONNECTION_STATE_ACTIVATED)
-                               break;
+                       ac_state = nm_active_connection_get_state (candidate);
+                       state = ac_state_to_vpn_state (ac_state);
                }
+               if (state != NM_VPN_CONNECTION_STATE_ACTIVATED)
+                       break;
        }
 
        if (ret && out_state)
@@ -1453,15 +1484,9 @@ get_vpn_connections (NMApplet *applet)
        for (i = 0; i < all_connections->len; i++) {
                NMConnection *connection = NM_CONNECTION (all_connections->pdata[i]);
 
-               if (!nm_connection_is_type (connection, NM_SETTING_VPN_SETTING_NAME))
+               if (!connection_is_vpn (connection))
                        continue;
 
-               if (!nm_connection_get_setting_vpn (connection)) {
-                       g_warning ("%s: VPN connection '%s' didn't have required vpn setting.", __func__,
-                                  nm_connection_get_id (connection));
-                       continue;
-               }
-
                g_ptr_array_add (vpn_connections, g_object_ref (connection));
        }