[network-manager-fortisslvpn/nm-1-0: 7/13] service: add support for split VPN routes

[Lubomir Rintel <lkundrak src gnome org>]

commit c859a8f71b2831c7be89d2609345ac511294be22
Author: Lubomir Rintel <lkundrak v3 sk>
Date:   Mon Sep 28 12:04:59 2015 +0200

    service: add support for split VPN routes
    
    (cherry picked from commit b459c771f73187d4b14435e42191c2b5a1d58a75)

 src/nm-fortisslvpn-pppd-plugin.c |   84 ++++++++++++++++++++++++++++++++++++++
 1 files changed, 84 insertions(+), 0 deletions(-)
---
diff --git a/src/nm-fortisslvpn-pppd-plugin.c b/src/nm-fortisslvpn-pppd-plugin.c
index 04ea3db..fd17059 100644
--- a/src/nm-fortisslvpn-pppd-plugin.c
+++ b/src/nm-fortisslvpn-pppd-plugin.c
@@ -31,12 +31,17 @@
 #include <glib.h>
 #include <glib-object.h>
 #include <dbus/dbus-glib.h>
+#include <stdlib.h>
 
 #include "nm-fortisslvpn-service.h"
 #include "nm-ppp-status.h"
 
 #include <nm-utils.h>
 
+/* These are here because nm-dbus-glib-types.h isn't exported */
+#define DBUS_TYPE_G_ARRAY_OF_UINT          (dbus_g_type_get_collection ("GArray", G_TYPE_UINT))
+#define DBUS_TYPE_G_ARRAY_OF_ARRAY_OF_UINT (dbus_g_type_get_collection ("GPtrArray", 
DBUS_TYPE_G_ARRAY_OF_UINT))
+
 int plugin_init (void);
 
 char pppd_version[] = VERSION;
@@ -156,6 +161,72 @@ value_destroy (gpointer data)
        g_slice_free (GValue, val);
 }
 
+static GValue *
+get_ip4_routes (void)
+{
+       GPtrArray *routes;
+       GValue *value = NULL;
+       int i;
+
+       routes = g_ptr_array_new ();
+
+       for (i = 0; i < 100; i++) {
+               GArray *array;
+               gchar *var;
+               const gchar *str;
+               in_addr_t dest, gateway;
+               guint32 metric, prefix;
+
+               var = g_strdup_printf ("VPN_ROUTE_DEST_%d", i);
+               str = g_getenv (var);
+               g_free (var);
+               if (!str || !*str)
+                       break;
+               dest = inet_addr (str);
+
+               var = g_strdup_printf ("VPN_ROUTE_MASK_%d", i);
+               str = g_getenv (var);
+               g_free (var);
+               if (!str || !*str)
+                       prefix = 32;
+               else
+                       prefix = nm_utils_ip4_netmask_to_prefix (inet_addr (str));
+
+               var = g_strdup_printf ("VPN_ROUTE_GATEWAY_%d", i);
+               str = g_getenv (var);
+               g_free (var);
+               if (!str || !*str)
+                       gateway = 0;
+               else
+                       gateway = inet_addr (str);
+
+               var = g_strdup_printf ("VPN_ROUTE_METRIC_%d", i);
+               str = g_getenv (var);
+               g_free (var);
+               if (!str || !*str)
+                       metric = 0;
+               else
+                       metric = atol (str);
+
+               array = g_array_sized_new (FALSE, TRUE, sizeof (guint32), 4);
+               g_array_append_val (array, dest);
+               g_array_append_val (array, prefix);
+               g_array_append_val (array, gateway);
+               g_array_append_val (array, metric);
+               g_ptr_array_add (routes, array);
+       }
+
+       if (routes->len > 0) {
+               value = g_new0 (GValue, 1);
+               g_value_init (value, DBUS_TYPE_G_ARRAY_OF_ARRAY_OF_UINT);
+               g_value_take_boxed (value, routes);
+       } else {
+               g_ptr_array_free (routes, TRUE);
+       }
+
+       return value;
+}
+
 static void
 nm_ip_up (void *data, int arg)
 {
@@ -165,6 +236,7 @@ nm_ip_up (void *data, int arg)
        GHashTable *hash;
        GArray *array;
        GValue *val;
+       const gchar *str;
 
        g_return_if_fail (DBUS_IS_G_PROXY (proxy));
 
@@ -181,6 +253,18 @@ nm_ip_up (void *data, int arg)
        g_hash_table_insert (hash, NM_VPN_PLUGIN_IP4_CONFIG_TUNDEV, 
                                         str_to_gvalue (ifname));
 
+       str = g_getenv ("VPN_GATEWAY");
+       if (str) {
+               g_hash_table_insert (hash, NM_VPN_PLUGIN_IP4_CONFIG_EXT_GATEWAY,
+                                          g_variant_new_uint32 (inet_addr (str)));
+       } else {
+               g_warning ("nm-fortisslvpn-ppp-plugin: (%s): no external gateway!", __func__);
+       }
+
+       val = get_ip4_routes ();
+       if (val)
+               g_hash_table_insert (hash, NM_VPN_PLUGIN_IP4_CONFIG_ROUTES, val);
+
        /* Prefer the peer options remote address first, _unless_ pppd made the
         * address up, at which point prefer the local options remote address,
         * and if that's not right, use the made-up address as a last resort.