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authorCody Russell <crussell@canonical.com>2009-09-24 12:09:22 -0500
committerCody Russell <crussell@canonical.com>2009-09-24 12:09:22 -0500
commita77cdfd8eaf9e51bf2a3cccb7d0a2c83b14ef28c (patch)
tree3cbb36cfbd8a02b692109a854dd4210cbc8a2016 /src/users-service-dbus.c
parente0cc3cab40349e9d7587be79e17f104bf5266a5d (diff)
parent73f4d4e7e1c6a5db370848797923481a7ee4ef43 (diff)
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Merge lp:~bratsche/indicator-session/users-service for bug #422052
Diffstat (limited to 'src/users-service-dbus.c')
-rw-r--r--src/users-service-dbus.c1147
1 files changed, 1147 insertions, 0 deletions
diff --git a/src/users-service-dbus.c b/src/users-service-dbus.c
new file mode 100644
index 0000000..018469c
--- /dev/null
+++ b/src/users-service-dbus.c
@@ -0,0 +1,1147 @@
+/*
+ * Copyright 2009 Canonical Ltd.
+ *
+ * Authors:
+ * Cody Russell <crussell@canonical.com>
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 3, as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranties of
+ * MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
+ * PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+#include <errno.h>
+#include <pwd.h>
+
+#include <dbus/dbus-glib.h>
+#include <dbus/dbus-glib.h>
+#include <dbus/dbus-glib-lowlevel.h>
+
+#include "dbus-shared-names.h"
+#include "users-service-dbus.h"
+#include "users-service-client.h"
+#include "users-service-marshal.h"
+
+static void users_service_dbus_class_init (UsersServiceDbusClass *klass);
+static void users_service_dbus_init (UsersServiceDbus *self);
+static void users_service_dbus_dispose (GObject *object);
+static void users_service_dbus_finalize (GObject *object);
+static void create_gdm_proxy (UsersServiceDbus *self);
+static void create_seat_proxy (UsersServiceDbus *self);
+static void create_ck_proxy (UsersServiceDbus *self);
+static void create_cksession_proxy (UsersServiceDbus *self);
+static gchar *get_seat (UsersServiceDbus *service);
+static void users_loaded (DBusGProxy *proxy,
+ gpointer user_data);
+static void user_added (DBusGProxy *proxy,
+ guint uid,
+ gpointer user_data);
+static void user_removed (DBusGProxy *proxy,
+ guint uid,
+ gpointer user_data);
+static void user_updated (DBusGProxy *proxy,
+ guint uid,
+ gpointer user_data);
+static void seat_proxy_session_added (DBusGProxy *seat_proxy,
+ const gchar *session_id,
+ UsersServiceDbus *service);
+static void seat_proxy_session_removed (DBusGProxy *seat_proxy,
+ const gchar *session_id,
+ UsersServiceDbus *service);
+static gboolean do_add_session (UsersServiceDbus *service,
+ UserData *user,
+ const gchar *ssid);
+static gchar * get_seat_internal (UsersServiceDbus *self);
+
+/* Private */
+typedef struct _UsersServiceDbusPrivate UsersServiceDbusPrivate;
+
+struct _UsersServiceDbusPrivate
+{
+ GHashTable *users;
+ gint count;
+ gchar *seat;
+ gchar *ssid;
+
+ DBusGConnection *system_bus;
+
+ DBusGProxy *gdm_proxy;
+ DBusGProxy *ck_proxy;
+ DBusGProxy *seat_proxy;
+ DBusGProxy *session_proxy;
+
+ GHashTable *exclusions;
+ GHashTable *sessions;
+};
+
+#define USERS_SERVICE_DBUS_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), USERS_SERVICE_DBUS_TYPE, UsersServiceDbusPrivate))
+
+/* Signals */
+enum {
+ USERS_LOADED,
+ USER_ADDED,
+ USER_REMOVED,
+ USER_UPDATED,
+ LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = { 0 };
+
+/* GObject Boilerplate */
+G_DEFINE_TYPE (UsersServiceDbus, users_service_dbus, G_TYPE_OBJECT);
+
+static void
+users_service_dbus_class_init (UsersServiceDbusClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+ g_type_class_add_private (object_class, sizeof (UsersServiceDbusPrivate));
+
+ object_class->dispose = users_service_dbus_dispose;
+ object_class->finalize = users_service_dbus_finalize;
+
+ signals[USERS_LOADED] = g_signal_new ("users-loaded",
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (UsersServiceDbusClass, users_loaded),
+ NULL, NULL,
+ g_cclosure_marshal_VOID__VOID,
+ G_TYPE_NONE, 0);
+
+ signals[USER_ADDED] = g_signal_new ("user-added",
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (UsersServiceDbusClass, user_added),
+ NULL, NULL,
+ _users_service_marshal_VOID__INT64,
+ G_TYPE_NONE, 1, G_TYPE_INT64);
+
+ signals[USER_REMOVED] = g_signal_new ("user-removed",
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (UsersServiceDbusClass, user_removed),
+ NULL, NULL,
+ _users_service_marshal_VOID__INT64,
+ G_TYPE_NONE, 1, G_TYPE_INT64);
+
+ signals[USER_UPDATED] = g_signal_new ("user-updated",
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (UsersServiceDbusClass, user_updated),
+ NULL, NULL,
+ _users_service_marshal_VOID__INT64,
+ G_TYPE_NONE, 1, G_TYPE_INT64);
+}
+
+static void
+users_service_dbus_init (UsersServiceDbus *self)
+{
+ GError *error = NULL;
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self);
+
+ priv->users = NULL;
+ priv->count = 0;
+
+ /* Get the system bus */
+ priv->system_bus = dbus_g_bus_get (DBUS_BUS_SYSTEM, &error);
+ if (error != NULL)
+ {
+ g_error ("Unable to get system bus: %s", error->message);
+ g_error_free(error);
+
+ return;
+ }
+
+ priv->sessions = g_hash_table_new_full (g_str_hash,
+ g_str_equal,
+ g_free,
+ g_free);
+
+ priv->users = g_hash_table_new_full (g_str_hash,
+ g_str_equal,
+ g_free,
+ NULL);
+
+ dbus_g_object_register_marshaller (_users_service_marshal_VOID__INT64,
+ G_TYPE_NONE,
+ G_TYPE_INT64,
+ G_TYPE_INVALID);
+
+ create_gdm_proxy (self);
+ create_ck_proxy (self);
+ create_seat_proxy (self);
+
+ users_loaded (priv->gdm_proxy, self);
+}
+
+static void
+users_service_dbus_dispose (GObject *object)
+{
+ G_OBJECT_CLASS (users_service_dbus_parent_class)->dispose (object);
+}
+
+static void
+users_service_dbus_finalize (GObject *object)
+{
+ G_OBJECT_CLASS (users_service_dbus_parent_class)->finalize (object);
+}
+
+static void
+create_gdm_proxy (UsersServiceDbus *self)
+{
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self);
+ GError *error = NULL;
+
+ priv->gdm_proxy = dbus_g_proxy_new_for_name_owner (priv->system_bus,
+ "org.gnome.DisplayManager",
+ "/org/gnome/DisplayManager/UserManager",
+ "org.gnome.DisplayManager.UserManager",
+ &error);
+
+ if (!priv->gdm_proxy)
+ {
+ if (error != NULL)
+ {
+ g_error ("Unable to get DisplayManager proxy on system bus: %s", error->message);
+ g_error_free (error);
+ }
+
+ return;
+ }
+
+ dbus_g_proxy_add_signal (priv->gdm_proxy,
+ "UsersLoaded",
+ G_TYPE_INVALID);
+
+ dbus_g_proxy_add_signal (priv->gdm_proxy,
+ "UserAdded",
+ G_TYPE_INT64,
+ G_TYPE_INVALID);
+
+ dbus_g_proxy_add_signal (priv->gdm_proxy,
+ "UserRemoved",
+ G_TYPE_INT64,
+ G_TYPE_INVALID);
+
+ dbus_g_proxy_add_signal (priv->gdm_proxy,
+ "UserUpdated",
+ G_TYPE_INT64,
+ G_TYPE_INVALID);
+
+ dbus_g_proxy_connect_signal (priv->gdm_proxy,
+ "UsersLoaded",
+ G_CALLBACK (users_loaded),
+ self,
+ NULL);
+
+ dbus_g_proxy_connect_signal (priv->gdm_proxy,
+ "UserAdded",
+ G_CALLBACK (user_added),
+ self,
+ NULL);
+
+ dbus_g_proxy_connect_signal (priv->gdm_proxy,
+ "UserRemoved",
+ G_CALLBACK (user_removed),
+ self,
+ NULL);
+
+ dbus_g_proxy_connect_signal (priv->gdm_proxy,
+ "UserUpdated",
+ G_CALLBACK (user_updated),
+ self,
+ NULL);
+}
+
+static void
+create_ck_proxy (UsersServiceDbus *self)
+{
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self);
+
+ priv->ck_proxy = dbus_g_proxy_new_for_name (priv->system_bus,
+ "org.freedesktop.ConsoleKit",
+ "/org/freedesktop/ConsoleKit/Manager",
+ "org.freedesktop.ConsoleKit.Manager");
+
+ if (!priv->ck_proxy)
+ {
+ g_warning ("Failed to get ConsoleKit proxy.");
+ return;
+ }
+}
+
+static void
+create_seat_proxy (UsersServiceDbus *self)
+{
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self);
+ GError *error = NULL;
+
+ priv->seat = get_seat (self);
+ if (priv->seat == NULL)
+ {
+ return;
+ }
+
+ priv->seat_proxy = dbus_g_proxy_new_for_name_owner (priv->system_bus,
+ "org.freedesktop.ConsoleKit",
+ priv->seat,
+ "org.freedesktop.ConsoleKit.Seat",
+ &error);
+
+ if (!priv->seat_proxy)
+ {
+ if (error != NULL)
+ {
+ g_warning ("Failed to connect to the ConsoleKit seat: %s", error->message);
+ g_error_free (error);
+ }
+
+ return;
+ }
+
+ dbus_g_proxy_add_signal (priv->seat_proxy,
+ "SessionAdded",
+ DBUS_TYPE_G_OBJECT_PATH,
+ G_TYPE_INVALID);
+ dbus_g_proxy_add_signal (priv->seat_proxy,
+ "SessionRemoved",
+ DBUS_TYPE_G_OBJECT_PATH,
+ G_TYPE_INVALID);
+
+ dbus_g_proxy_connect_signal (priv->seat_proxy,
+ "SessionAdded",
+ G_CALLBACK (seat_proxy_session_added),
+ self,
+ NULL);
+ dbus_g_proxy_connect_signal (priv->seat_proxy,
+ "SessionRemoved",
+ G_CALLBACK (seat_proxy_session_removed),
+ self,
+ NULL);
+}
+
+static void
+create_cksession_proxy (UsersServiceDbus *service)
+{
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (service);
+
+ priv->session_proxy = dbus_g_proxy_new_for_name (priv->system_bus,
+ "org.freedesktop.ConsoleKit",
+ priv->ssid,
+ "org.freedesktop.ConsoleKit.Session");
+
+ if (!priv->session_proxy)
+ {
+ g_warning ("Failed to get ConsoleKit session proxy");
+ return;
+ }
+}
+
+static gchar *
+get_seat (UsersServiceDbus *service)
+{
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (service);
+ GError *error = NULL;
+ gchar *ssid = NULL;
+ gchar *seat;
+
+ if (!dbus_g_proxy_call (priv->ck_proxy,
+ "GetCurrentSession",
+ &error,
+ G_TYPE_INVALID,
+ DBUS_TYPE_G_OBJECT_PATH,
+ &ssid,
+ G_TYPE_INVALID))
+ {
+ if (error)
+ {
+ g_debug ("Failed to call GetCurrentSession: %s", error->message);
+ g_error_free (error);
+ }
+
+ if (ssid)
+ g_free (ssid);
+
+ return NULL;
+ }
+
+ priv->ssid = ssid;
+ create_cksession_proxy (service);
+
+ seat = get_seat_internal (service);
+
+ return seat;
+}
+
+static gchar *
+get_seat_internal (UsersServiceDbus *self)
+{
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self);
+ GError *error = NULL;
+ gchar *seat = NULL;
+
+ if (!dbus_g_proxy_call (priv->session_proxy,
+ "GetSeatId",
+ &error,
+ G_TYPE_INVALID,
+ DBUS_TYPE_G_OBJECT_PATH, &seat,
+ G_TYPE_INVALID))
+ {
+ if (error)
+ {
+ g_debug ("Failed to call GetSeatId: %s", error->message);
+
+ return NULL;
+ }
+ }
+
+ return seat;
+}
+
+static gboolean
+get_unix_user (UsersServiceDbus *service,
+ const gchar *session_id,
+ uid_t *uidp)
+{
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (service);
+ GError *error = NULL;
+ guint uid;
+
+ if (dbus_g_proxy_call (priv->session_proxy,
+ "GetUnixUser",
+ &error,
+ G_TYPE_INVALID,
+ G_TYPE_UINT, &uid,
+ G_TYPE_INVALID))
+ {
+ if (error)
+ {
+ g_warning ("Failed to call GetUnixUser: %s", error->message);
+ g_error_free (error);
+ }
+
+ return FALSE;
+ }
+
+ if (uidp != NULL)
+ {
+ *uidp = (uid_t)uid;
+ }
+
+ return TRUE;
+}
+
+static gchar *
+get_session_for_user (UsersServiceDbus *service,
+ UserData *user)
+{
+ GList *l;
+
+ if (!users_service_dbus_can_activate_session (service))
+ {
+ return NULL;
+ }
+
+ if (!user->sessions || g_list_length (user->sessions) == 0)
+ {
+ return NULL;
+ }
+
+ for (l = user->sessions; l != NULL; l = l->next)
+ {
+ const char *ssid;
+
+ ssid = l->data;
+
+ if (ssid)
+ {
+ return g_strdup (ssid);
+ }
+ }
+
+ return NULL;
+}
+
+static gboolean
+do_add_session (UsersServiceDbus *service,
+ UserData *user,
+ const gchar *ssid)
+{
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (service);
+ GError *error = NULL;
+ gchar *seat = NULL;
+ gchar *xdisplay = NULL;
+ GList *l;
+
+ seat = get_seat_internal (service);
+
+ if (!seat || !priv->seat || strcmp (seat, priv->seat) != 0)
+ return FALSE;
+
+ if (!dbus_g_proxy_call (priv->session_proxy,
+ "GetX11Display",
+ &error,
+ G_TYPE_INVALID,
+ G_TYPE_STRING, &xdisplay,
+ G_TYPE_INVALID))
+ {
+ if (error)
+ {
+ g_debug ("Failed to call GetX11Display: %s", error->message);
+ g_error_free (error);
+ }
+
+ return FALSE;
+ }
+
+ if (!xdisplay || xdisplay[0] == '\0')
+ return FALSE;
+
+ g_hash_table_insert (priv->sessions,
+ g_strdup (ssid),
+ g_strdup (user->user_name));
+
+ l = g_list_find_custom (user->sessions, ssid, (GCompareFunc)g_strcmp0);
+ if (l == NULL)
+ {
+ g_debug ("Adding session %s", ssid);
+
+ user->sessions = g_list_prepend (user->sessions, g_strdup (ssid));
+ }
+ else
+ {
+ g_debug ("User %s already has session %s", user->user_name, ssid);
+ }
+
+ return TRUE;
+}
+
+static void
+add_sessions_for_user (UsersServiceDbus *self,
+ UserData *user)
+{
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self);
+ GError *error;
+ GPtrArray *sessions;
+ int i;
+
+ error = NULL;
+ if (!dbus_g_proxy_call (priv->ck_proxy,
+ "GetSessionsForUnixUser",
+ &error,
+ G_TYPE_UINT, user->uid,
+ G_TYPE_INVALID,
+ dbus_g_type_get_collection ("GPtrArray", DBUS_TYPE_G_OBJECT_PATH),
+ &sessions,
+ G_TYPE_INVALID))
+ {
+ g_debug ("Failed to call GetSessionsForUnixUser: %s", error->message);
+ g_error_free (error);
+
+ return;
+ }
+
+ for (i = 0; i < sessions->len; i++)
+ {
+ char *ssid;
+
+ ssid = g_ptr_array_index (sessions, i);
+ do_add_session (self, user, ssid);
+ }
+
+ g_ptr_array_foreach (sessions, (GFunc)g_free, NULL);
+ g_ptr_array_free (sessions, TRUE);
+}
+
+
+static void
+seat_proxy_session_added (DBusGProxy *seat_proxy,
+ const gchar *session_id,
+ UsersServiceDbus *service)
+{
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (service);
+ uid_t uid;
+ gboolean res;
+ struct passwd *pwent;
+ UserData *user;
+
+ if (!get_unix_user (service, session_id, &uid))
+ {
+ g_warning ("Failed to lookup user for session");
+ return;
+ }
+
+ errno = 0;
+ pwent = getpwuid (uid);
+ if (!pwent)
+ {
+ g_warning ("Failed to lookup user id %d: %s", (int)uid, g_strerror (errno));
+ return;
+ }
+
+ user = g_hash_table_lookup (priv->users, pwent->pw_name);
+ if (!user)
+ {
+ return;
+ }
+
+ res = do_add_session (service, user, session_id);
+}
+
+static void
+seat_proxy_session_removed (DBusGProxy *seat_proxy,
+ const gchar *session_id,
+ UsersServiceDbus *service)
+{
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (service);
+ UserData *user;
+ gchar *username;
+ GList *l;
+
+ username = g_hash_table_lookup (priv->sessions, session_id);
+ if (!username)
+ return;
+
+ user = g_hash_table_lookup (priv->users, username);
+ if (!user)
+ return;
+
+ l = g_list_find_custom (user->sessions,
+ session_id,
+ (GCompareFunc)g_strcmp0);
+ if (l)
+ {
+ g_debug ("Removing session %s", session_id);
+
+ g_free (l->data);
+ user->sessions = g_list_delete_link (user->sessions, l);
+ }
+ else
+ {
+ g_debug ("Session not found: %s", session_id);
+ }
+}
+
+static void
+sync_users (UsersServiceDbus *self)
+{
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self);
+
+ if (g_hash_table_size (priv->users) > 0)
+ {
+ return;
+ }
+
+ if (priv->count > MINIMUM_USERS && priv->count < MAXIMUM_USERS)
+ {
+ GArray *uids = NULL;
+ GPtrArray *users_info = NULL;
+ GError *error = NULL;
+ gint i;
+
+ uids = g_array_new (FALSE, FALSE, sizeof (gint64));
+
+ if (!org_gnome_DisplayManager_UserManager_get_user_list (priv->gdm_proxy,
+ &uids,
+ &error))
+ {
+ g_warning ("failed to retrieve user list: %s", error->message);
+ g_error_free (error);
+
+ return;
+ }
+
+ users_info = g_ptr_array_new ();
+
+ if (!org_gnome_DisplayManager_UserManager_get_users_info (priv->gdm_proxy,
+ uids,
+ &users_info,
+ &error))
+ {
+ g_warning ("failed to retrieve user info: %s", error->message);
+ g_error_free (error);
+
+ return;
+ }
+
+ for (i = 0; i < users_info->len; i++)
+ {
+ GValueArray *values;
+ UserData *user;
+
+ values = g_ptr_array_index (users_info, i);
+
+ user = g_new0 (UserData, 1);
+
+ user->uid = g_value_get_int64 (g_value_array_get_nth (values, 0));
+ user->user_name = g_strdup (g_value_get_string (g_value_array_get_nth (values, 1)));
+ user->real_name = g_strdup (g_value_get_string (g_value_array_get_nth (values, 2)));
+ user->shell = g_strdup (g_value_get_string (g_value_array_get_nth (values, 3)));
+ user->login_count = g_value_get_int (g_value_array_get_nth (values, 4));
+ user->icon_url = g_strdup (g_value_get_string (g_value_array_get_nth (values, 5)));
+
+ g_hash_table_insert (priv->users,
+ g_strdup (user->user_name),
+ user);
+
+ add_sessions_for_user (self, user);
+ }
+ }
+}
+
+static void
+users_loaded (DBusGProxy *proxy,
+ gpointer user_data)
+{
+ UsersServiceDbus *service;
+ UsersServiceDbusPrivate *priv;
+ GError *error = NULL;
+ gint count;
+
+ service = (UsersServiceDbus *)user_data;
+ priv = USERS_SERVICE_DBUS_GET_PRIVATE (service);
+
+ if (!org_gnome_DisplayManager_UserManager_count_users (proxy,
+ &count,
+ &error))
+ {
+ g_warning ("failed to retrieve user count: %s", error->message);
+ g_error_free (error);
+
+ return;
+ }
+
+ priv->count = count;
+
+ sync_users (service);
+}
+
+static gboolean
+session_is_login_window (UsersServiceDbus *self,
+ const char *ssid)
+{
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self);
+ DBusGProxy *proxy = NULL;
+ GError *error = NULL;
+ char *type = NULL;
+
+ if (!(proxy = dbus_g_proxy_new_for_name (priv->system_bus,
+ "org.freedesktop.ConsoleKit",
+ ssid,
+ "org.freedesktop.ConsoleKit.Session")))
+ {
+ g_warning ("Failed to get ConsoleKit proxy");
+
+ return FALSE;
+ }
+
+ if (!dbus_g_proxy_call (proxy,
+ "GetSessionType",
+ &error,
+ G_TYPE_INVALID,
+ G_TYPE_STRING, &type,
+ G_TYPE_INVALID))
+ {
+ g_warning ("Can't call GetSessionType: %s", error->message);
+ g_error_free (error);
+
+ if (proxy)
+ g_object_unref (proxy);
+
+ return FALSE;
+ }
+
+ if (proxy)
+ g_object_unref (proxy);
+
+ return (type && type[0] != '\0' && strcmp (type, "LoginWindow") == 0);
+}
+
+static char *
+get_login_session (UsersServiceDbus *self)
+{
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self);
+ gboolean can_activate;
+ GError *error = NULL;
+ GPtrArray *sessions = NULL;
+ char *ssid = NULL;
+ int i;
+
+ if (!priv->seat || priv->seat[0] == '\0')
+ {
+ return NULL;
+ }
+
+ if (!dbus_g_proxy_call (priv->seat_proxy,
+ "CanActivateSessions",
+ &error,
+ G_TYPE_INVALID,
+ G_TYPE_BOOLEAN, &can_activate,
+ G_TYPE_INVALID))
+ {
+ g_warning ("Failed to call CanActivateSessions: %s", error->message);
+ g_error_free (error);
+
+ return NULL;
+ }
+
+ if (!can_activate)
+ {
+ return NULL;
+ }
+
+ error = NULL;
+ if (!dbus_g_proxy_call (priv->seat_proxy,
+ "GetSessions",
+ &error,
+ G_TYPE_INVALID,
+ dbus_g_type_get_collection ("GPtrArray", DBUS_TYPE_G_OBJECT_PATH), &sessions,
+ G_TYPE_INVALID))
+ {
+ g_warning ("Failed to call GetSessions: %s", error->message);
+ g_error_free (error);
+
+ return NULL;
+ }
+
+ for (i = 0; i < sessions->len; i++)
+ {
+ char *s = g_ptr_array_index (sessions, i);
+
+ if (session_is_login_window (self, s))
+ {
+ ssid = g_strdup (s);
+ break;
+ }
+ }
+
+ g_ptr_array_foreach (sessions, (GFunc)g_free, NULL);
+ g_ptr_array_free (sessions, TRUE);
+
+ return ssid;
+}
+
+static gboolean
+activate_user_session (UsersServiceDbus *self,
+ const char *seat,
+ const char *ssid)
+{
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self);
+ DBusMessage *message = NULL;
+ DBusMessage *reply = NULL;
+ DBusError error;
+
+ if (!(message = dbus_message_new_method_call ("org.freedesktop.ConsoleKit",
+ seat,
+ "org.freedesktop.ConsoleKit.Seat",
+ "ActivateSession")))
+ {
+ return FALSE;
+ }
+
+ if (!dbus_message_append_args (message,
+ DBUS_TYPE_OBJECT_PATH, &ssid,
+ DBUS_TYPE_INVALID))
+ {
+ return FALSE;
+ }
+
+ dbus_error_init (&error);
+ if (!(reply = dbus_connection_send_with_reply_and_block (dbus_g_connection_get_connection (priv->system_bus),
+ message,
+ -1,
+ &error)))
+ {
+ if (dbus_error_is_set (&error))
+ {
+ g_warning ("Can't activate session: %s", error.message);
+ dbus_error_free (&error);
+
+ return FALSE;
+ }
+ }
+
+ if (message)
+ {
+ dbus_message_unref (message);
+ }
+
+ if (reply)
+ {
+ dbus_message_unref (reply);
+ }
+
+ return TRUE;
+}
+
+gboolean
+start_new_user_session (UsersServiceDbus *self,
+ UserData *user)
+{
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self);
+ GError *error = NULL;
+ char *ssid;
+
+ ssid = get_login_session (self);
+ if (ssid)
+ {
+ if (!activate_user_session (self, priv->seat, ssid))
+ {
+ return FALSE;
+ }
+ }
+
+ if (!g_spawn_command_line_async ("gdmflexiserver -s", &error))
+ {
+ g_warning ("Failed to start new login session: %s", error->message);
+ g_error_free (error);
+
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static void
+user_added (DBusGProxy *proxy,
+ guint uid,
+ gpointer user_data)
+{
+ UsersServiceDbus *service = (UsersServiceDbus *)user_data;
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (service);
+ UserData *user = g_new0 (UserData, 1);
+ GError *error = NULL;
+
+ priv->count++;
+
+ if (priv->count < MAXIMUM_USERS)
+ {
+ if ((priv->count - g_hash_table_size (priv->users)) > 1)
+ {
+ sync_users (service);
+ }
+ else
+ {
+ if (!org_gnome_DisplayManager_UserManager_get_user_info (proxy,
+ uid,
+ &user->user_name,
+ &user->real_name,
+ &user->shell,
+ &user->login_count,
+ &user->icon_url,
+ &error))
+ {
+ g_warning ("unable to retrieve user info: %s", error->message);
+ g_error_free (error);
+
+ g_free (user);
+
+ return;
+ }
+
+ user->uid = uid;
+
+ g_hash_table_insert (priv->users,
+ g_strdup (user->user_name),
+ user);
+
+ g_signal_emit (G_OBJECT (service), signals[USER_ADDED], 0, user, TRUE);
+ }
+ }
+}
+
+static gboolean
+compare_users_by_uid (gpointer key,
+ gpointer value,
+ gpointer user_data)
+{
+ return (GPOINTER_TO_UINT (value) == GPOINTER_TO_UINT (user_data));
+}
+
+static void
+user_removed (DBusGProxy *proxy,
+ guint uid,
+ gpointer user_data)
+{
+ UsersServiceDbus *service = (UsersServiceDbus *)user_data;
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (service);
+ UserData *user;
+ gint size;
+
+ size = g_hash_table_size (priv->users);
+
+ priv->count--;
+
+ if (size == 0 || (size - priv->count) > 1)
+ {
+ sync_users (service);
+ }
+ else
+ {
+ user = g_hash_table_find (priv->users,
+ compare_users_by_uid,
+ GUINT_TO_POINTER (uid));
+
+ if (user != NULL)
+ {
+ g_hash_table_remove (priv->users,
+ user->user_name);
+ }
+ }
+}
+
+static void
+user_updated (DBusGProxy *proxy,
+ guint uid,
+ gpointer user_data)
+{
+#if 0
+ // XXX - TODO
+ UsersServiceDbus *service = (UsersServiceDbus *)user_data;
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (service);
+ UserData *user;
+
+ user = g_hash_table_find (priv->users,
+ compare_users_by_uid,
+ GUINT_TO_POINTER (uid));
+#endif
+}
+
+gint
+users_service_dbus_get_user_count (UsersServiceDbus *self)
+{
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self);
+
+ return priv->count;
+}
+
+GList *
+users_service_dbus_get_user_list (UsersServiceDbus *self)
+{
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self);
+
+ return g_hash_table_get_values (priv->users);
+}
+
+/*
+ * XXX - TODO: Right now we switch to a session that another user
+ * already has open, but if there are no open sessions
+ * for this user we go to the login screen and the
+ * user at the seat must select a user and enter a
+ * password. This kind of defeats the purpose of
+ * actually selecting a username, since selecting any
+ * user will do the same thing here. We need to change
+ * it so you only need to enter a password for the
+ * specified user.
+ */
+gboolean
+users_service_dbus_activate_user_session (UsersServiceDbus *self,
+ UserData *user)
+{
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self);
+ DBusMessage *message = NULL;
+ DBusMessage *reply = NULL;
+ DBusError error;
+ gchar *ssid;
+
+ dbus_error_init (&error);
+
+ if (!priv->seat)
+ priv->seat = get_seat (self);
+
+ ssid = get_session_for_user (self, user);
+
+ if (!ssid)
+ {
+ return start_new_user_session (self, user);
+ }
+
+ if (!(message = dbus_message_new_method_call ("org.freedesktop.ConsoleKit",
+ priv->seat,
+ "org.freedesktop.ConsoleKit.Seat",
+ "ActivateSession")))
+ {
+ g_warning ("failed to create new message");
+ return FALSE;
+ }
+
+ if (!dbus_message_append_args (message,
+ DBUS_TYPE_OBJECT_PATH,
+ &ssid,
+ DBUS_TYPE_INVALID))
+ {
+ g_warning ("failed to append args");
+ return FALSE;
+ }
+
+ if (!(reply = dbus_connection_send_with_reply_and_block (dbus_g_connection_get_connection (priv->system_bus),
+ message,
+ -1,
+ &error)))
+ {
+ if (dbus_error_is_set (&error))
+ {
+ g_warning ("Failed to send message: %s", error.message);
+ dbus_error_free (&error);
+
+ return FALSE;
+ }
+ }
+
+ if (message)
+ {
+ dbus_message_unref (message);
+ }
+
+ if (reply)
+ {
+ dbus_message_unref (reply);
+ }
+
+ return TRUE;
+}
+
+gboolean
+users_service_dbus_can_activate_session (UsersServiceDbus *self)
+{
+ UsersServiceDbusPrivate *priv = USERS_SERVICE_DBUS_GET_PRIVATE (self);
+ gboolean can_activate = FALSE;
+ GError *error = NULL;
+
+ if (!priv->seat_proxy)
+ {
+ create_seat_proxy (self);
+ }
+
+ if (!priv->seat || priv->seat[0] == '\0')
+ {
+ return FALSE;
+ }
+
+ if (!dbus_g_proxy_call (priv->seat_proxy,
+ "CanActivateSessions",
+ &error,
+ G_TYPE_INVALID,
+ G_TYPE_BOOLEAN, &can_activate,
+ G_TYPE_INVALID))
+ {
+ g_warning ("Failed to determine if seat can activate sessions: %s", error->message);
+ g_error_free (error);
+
+ return FALSE;
+ }
+
+ return can_activate;
+}