From ab746cb4fde79721ddf85761a6496555206fd89b Mon Sep 17 00:00:00 2001
From: Michael Terry <michael.terry@canonical.com>
Date: Thu, 28 Jul 2011 12:41:59 -0400
Subject: update interface with LightDM

---
 src/display-manager.xml  |  9 ++++++---
 src/users-service-dbus.c | 47 +++++++++++++++++++++++++++++++++++++++++------
 2 files changed, 47 insertions(+), 9 deletions(-)

diff --git a/src/display-manager.xml b/src/display-manager.xml
index 004eca1..92f5e05 100644
--- a/src/display-manager.xml
+++ b/src/display-manager.xml
@@ -1,17 +1,20 @@
 <!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN" "http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
 <node>
-  <interface name="org.freedesktop.DisplayManager">
+  <interface name="org.freedesktop.DisplayManager.Seat">
 
     <!-- Show greeter to allow new login / switch users -->
-    <method name="ShowGreeter"/>
+    <method name="SwitchToGreeter"/>
 
     <!-- Switch to a user, starting a new display if required -->
     <method name="SwitchToUser">
       <arg name="username" direction="in" type="s"/>
+      <arg name="session" direction="in" type="s"/>
     </method>
 
     <!-- Switch to the guest user -->
-    <method name="SwitchToGuest"/>
+    <method name="SwitchToGuest">
+      <arg name="session" direction="in" type="s"/>
+    </method>
 
   </interface>
 </node>
diff --git a/src/users-service-dbus.c b/src/users-service-dbus.c
index 087378c..83edaa3 100644
--- a/src/users-service-dbus.c
+++ b/src/users-service-dbus.c
@@ -195,15 +195,50 @@ static void
 create_display_manager_proxy (UsersServiceDbus *self)
 {
   UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self);
+  DBusGProxy *dm_proxy = NULL;
+  GError *error = NULL;
+  const gchar *cookie = NULL;
+  gchar *seat = NULL;
+
+  cookie = g_getenv ("XDG_SESSION_COOKIE");
+  if (cookie == NULL || cookie[0] == 0)
+    {
+      g_warning ("Failed to get DisplayManager proxy: XDG_SESSION_COOKIE undefined.");
+      return;
+    }
+
+  dm_proxy = dbus_g_proxy_new_for_name (priv->system_bus,
+                                        "org.freedesktop.DisplayManager",
+                                        "/org/freedesktop/DisplayManager",
+                                        "org.freedesktop.DisplayManager");
+
+  if (!dm_proxy)
+    {
+      g_warning ("Failed to get DisplayManager proxy.");
+      return;
+    }
+
+  /* Now request the proper seat */
+  if (!dbus_g_proxy_call (dm_proxy, "GetSeatForCookie", &error,
+                          G_TYPE_STRING, cookie, G_TYPE_INVALID,
+                          DBUS_TYPE_G_OBJECT_PATH, &seat, G_TYPE_INVALID))
+    {
+      g_warning ("Failed to get DisplayManager seat proxy: %s", error->message);
+      g_object_unref (dm_proxy);
+      g_error_free (error);
+      return;
+    }
+  g_object_unref (dm_proxy);
 
   priv->display_manager_proxy = dbus_g_proxy_new_for_name (priv->system_bus,
                                                            "org.freedesktop.DisplayManager",
-                                                           "/org/freedesktop/DisplayManager",
-                                                           "org.freedesktop.DisplayManager");
+                                                           seat,
+                                                           "org.freedesktop.DisplayManager.Seat");
+  g_free (seat);
 
   if (!priv->display_manager_proxy)
     {
-      g_warning ("Failed to get DisplayManager proxy.");
+      g_warning ("Failed to get DisplayManager seat proxy.");
       return;
     }
 }
@@ -780,7 +815,7 @@ users_service_dbus_show_greeter (UsersServiceDbus *self)
 {
 	g_return_val_if_fail(IS_USERS_SERVICE_DBUS(self), FALSE);
 	UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self);
-	return org_freedesktop_DisplayManager_show_greeter(priv->display_manager_proxy, NULL);
+	return org_freedesktop_DisplayManager_Seat_switch_to_greeter(priv->display_manager_proxy, NULL);
 }
 
 /* Activates the guest account if it can. */
@@ -789,7 +824,7 @@ users_service_dbus_activate_guest_session (UsersServiceDbus *self)
 {
 	g_return_val_if_fail(IS_USERS_SERVICE_DBUS(self), FALSE);
 	UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self);
-	return org_freedesktop_DisplayManager_switch_to_guest(priv->display_manager_proxy, NULL);
+	return org_freedesktop_DisplayManager_Seat_switch_to_guest(priv->display_manager_proxy, "", NULL);
 }
 
 /* Activates a specific user */
@@ -799,7 +834,7 @@ users_service_dbus_activate_user_session (UsersServiceDbus *self,
 {
 	g_return_val_if_fail(IS_USERS_SERVICE_DBUS(self), FALSE);
 	UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self);
-	return org_freedesktop_DisplayManager_switch_to_user(priv->display_manager_proxy, user->user_name, NULL);
+	return org_freedesktop_DisplayManager_Seat_switch_to_user(priv->display_manager_proxy, user->user_name, "", NULL);
 }
 
 gboolean
-- 
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