[gdm/x-gdm-sessionregisters: 2/4] GdmManager, GdmDisplay: Add RegisterSession method



commit dad3f62c1126236f77cf6deee6b0ea419bfa2664
Author: Iain Lane <iainl gnome org>
Date:   Tue May 7 15:57:43 2019 +0100

    GdmManager, GdmDisplay: Add RegisterSession method
    
    Window managers can use this to register with GDM when they've finished
    starting up and started displaying.

 daemon/gdm-display.c   | 27 +++++++++++++++++++++++++++
 daemon/gdm-manager.c   | 30 ++++++++++++++++++++++++++++++
 daemon/gdm-manager.xml |  3 +++
 3 files changed, 60 insertions(+)
---
diff --git a/daemon/gdm-display.c b/daemon/gdm-display.c
index a8747785..fff5543e 100644
--- a/daemon/gdm-display.c
+++ b/daemon/gdm-display.c
@@ -93,6 +93,7 @@ typedef struct _GdmDisplayPrivate
         guint                 allow_timed_login : 1;
         guint                 have_existing_user_accounts : 1;
         guint                 doing_initial_setup : 1;
+        guint                 registered : 1;
 } GdmDisplayPrivate;
 
 enum {
@@ -115,6 +116,7 @@ enum {
         PROP_ALLOW_TIMED_LOGIN,
         PROP_HAVE_EXISTING_USER_ACCOUNTS,
         PROP_DOING_INITIAL_SETUP,
+        PROP_REGISTERED,
 };
 
 static void     gdm_display_class_init  (GdmDisplayClass *klass);
@@ -871,6 +873,17 @@ _gdm_display_set_is_local (GdmDisplay     *self,
         priv->is_local = is_local;
 }
 
+static void
+_gdm_display_set_registered (GdmDisplay     *self,
+                            gboolean        registered)
+{
+        GdmDisplayPrivate *priv;
+
+        priv = gdm_display_get_instance_private (self);
+        g_debug ("GdmDisplay: registered: %s", registered? "yes" : "no");
+        priv->registered = registered;
+}
+
 static void
 _gdm_display_set_launch_environment (GdmDisplay           *self,
                                      GdmLaunchEnvironment *launch_environment)
@@ -959,6 +972,9 @@ gdm_display_set_property (GObject        *object,
         case PROP_IS_INITIAL:
                 _gdm_display_set_is_initial (self, g_value_get_boolean (value));
                 break;
+        case PROP_REGISTERED:
+                _gdm_display_set_registered (self, g_value_get_boolean (value));
+                break;
         default:
                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
                 break;
@@ -1031,6 +1047,9 @@ gdm_display_get_property (GObject        *object,
         case PROP_DOING_INITIAL_SETUP:
                 g_value_set_boolean (value, priv->doing_initial_setup);
                 break;
+        case PROP_REGISTERED:
+                g_value_set_boolean (value, priv->registered);
+                break;
         case PROP_ALLOW_TIMED_LOGIN:
                 g_value_set_boolean (value, priv->allow_timed_login);
                 break;
@@ -1355,6 +1374,14 @@ gdm_display_class_init (GdmDisplayClass *klass)
                                                                NULL,
                                                                FALSE,
                                                                G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+        g_object_class_install_property (object_class,
+                                         PROP_REGISTERED,
+                                         g_param_spec_boolean ("registered",
+                                                               NULL,
+                                                               NULL,
+                                                               FALSE,
+                                                               G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
         g_object_class_install_property (object_class,
                                          PROP_LAUNCH_ENVIRONMENT,
                                          g_param_spec_object ("launch-environment",
diff --git a/daemon/gdm-manager.c b/daemon/gdm-manager.c
index 980aa62d..8e5eacb0 100644
--- a/daemon/gdm-manager.c
+++ b/daemon/gdm-manager.c
@@ -803,6 +803,35 @@ gdm_manager_handle_register_display (GdmDBusManager        *manager,
         return TRUE;
 }
 
+static gboolean
+gdm_manager_handle_register_session (GdmDBusManager        *manager,
+                                     GDBusMethodInvocation *invocation,
+                                     GVariant              *details)
+{
+        GdmManager      *self = GDM_MANAGER (manager);
+        GdmDisplay      *display;
+        const char      *sender;
+        GDBusConnection *connection;
+
+        sender = g_dbus_method_invocation_get_sender (invocation);
+        connection = g_dbus_method_invocation_get_connection (invocation);
+
+        get_display_and_details_for_bus_sender (self, connection, sender, &display,
+                                                NULL, NULL, NULL, NULL, NULL, NULL, NULL);
+
+        g_debug ("GdmManager: trying to register new session on display %p", display);
+
+        if (display != NULL)
+                g_object_set (G_OBJECT (display), "registered", TRUE, NULL);
+        else
+                g_debug ("GdmManager: No display, not registering");
+
+        gdm_dbus_manager_complete_register_session (GDM_DBUS_MANAGER (manager),
+                                                    invocation);
+
+        return TRUE;
+}
+
 static gboolean
 gdm_manager_handle_open_session (GdmDBusManager        *manager,
                                  GDBusMethodInvocation *invocation)
@@ -1159,6 +1188,7 @@ static void
 manager_interface_init (GdmDBusManagerIface *interface)
 {
         interface->handle_register_display = gdm_manager_handle_register_display;
+        interface->handle_register_session = gdm_manager_handle_register_session;
         interface->handle_open_session = gdm_manager_handle_open_session;
         interface->handle_open_reauthentication_channel = gdm_manager_handle_open_reauthentication_channel;
 }
diff --git a/daemon/gdm-manager.xml b/daemon/gdm-manager.xml
index f11f3fb7..92ef1d02 100644
--- a/daemon/gdm-manager.xml
+++ b/daemon/gdm-manager.xml
@@ -4,6 +4,9 @@
     <method name="RegisterDisplay">
       <arg name="details" direction="in" type="a{ss}"/>
     </method>
+    <method name="RegisterSession">
+      <arg name="details" direction="in" type="a{sv}"/>
+    </method>
     <method name="OpenSession">
       <arg name="address" direction="out" type="s"/>
     </method>


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