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Diffstat (limited to 'src/session-menu-mgr.c')
| -rw-r--r-- | src/session-menu-mgr.c | 1226 |
1 files changed, 0 insertions, 1226 deletions
diff --git a/src/session-menu-mgr.c b/src/session-menu-mgr.c deleted file mode 100644 index b618135..0000000 --- a/src/session-menu-mgr.c +++ /dev/null @@ -1,1226 +0,0 @@ -/* -Copyright 2011 Canonical Ltd. - -Authors: - Charles Kerr <charles.kerr@canonical.com> - Conor Curran <conor.curran@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/>. -*/ - -#include "config.h" - -#include <sys/types.h> -#include <pwd.h> /* geteuid(), getpwuid() */ - -#include <glib.h> -#include <glib/gi18n.h> - -#include <libdbusmenu-glib/client.h> -#include <libdbusmenu-gtk/menuitem.h> - -#include "dbus-upower.h" -#include "session-menu-mgr.h" -#include "shared-names.h" -#include "users-service-dbus.h" -#include "online-accounts-mgr.h" - -#define DEBUG_SHOW_ALL FALSE - -#define UPOWER_ADDRESS "org.freedesktop.UPower" -#define UPOWER_PATH "/org/freedesktop/UPower" - -#define CMD_HELP "yelp" -#define CMD_INFO "gnome-control-center info" -#define CMD_SYSTEM_SETTINGS "gnome-control-center" -#ifdef HAVE_GTKLOGOUTHELPER - #define HAVE_RESTART_CMD TRUE - #define CMD_RESTART LIBEXECDIR"/gtk-logout-helper --restart" - #define CMD_LOGOUT LIBEXECDIR"/gtk-logout-helper --logout" - #define CMD_SHUTDOWN LIBEXECDIR"/gtk-logout-helper --shutdown" -#else - #define HAVE_RESTART_CMD FALSE /* hmm, no gnome-session-quit --restart? */ - #define CMD_RESTART "" - #define CMD_LOGOUT "gnome-session-quit --logout" - #define CMD_SHUTDOWN "gnome-session-quit --power-off" -#endif - -/** - * Which switch menuitem to show -- based on lockdown settings, - * greeter mode, number of users in the system, and so on. - * See get_switcher_mode() - */ -typedef enum -{ - SWITCHER_MODE_SCREENSAVER, - SWITCHER_MODE_LOCK, - SWITCHER_MODE_SWITCH, - SWITCHER_MODE_SWITCH_OR_LOCK, - SWITCHER_MODE_NONE -} -SwitcherMode; - -/** - * Creates and manages the menumodel and associated actions for the - * session menu described at <https://wiki.ubuntu.com/SystemMenu>. - * - * This is a pretty straightforward class: it creates the menumodel - * and listens for events that can affect the model's properties. - * - * Simple event sources, such as GSettings and a UPower DBus proxy, - * are handled here. More involved event sources are delegated to the - * UsersServiceDBus facade class. - */ -struct _SessionMenuMgr -{ - GObject parent_instance; - - DbusmenuMenuitem * top_mi; - DbusmenuMenuitem * screensaver_mi; - DbusmenuMenuitem * lock_mi; - DbusmenuMenuitem * lock_switch_mi; - DbusmenuMenuitem * guest_mi; - DbusmenuMenuitem * online_accounts_mi; - DbusmenuMenuitem * logout_mi; - DbusmenuMenuitem * suspend_mi; - DbusmenuMenuitem * hibernate_mi; - DbusmenuMenuitem * restart_mi; - DbusmenuMenuitem * shutdown_mi; - - GSList * user_menuitems; - gint user_menuitem_index; - - GSettings * lockdown_settings; - GSettings * indicator_settings; - GSettings * keybinding_settings; - - /* cached settings taken from the upower proxy */ - gboolean can_hibernate; - gboolean can_suspend; - gboolean allow_hibernate; - gboolean allow_suspend; - - gboolean greeter_mode; - - GCancellable * cancellable; - DBusUPower * upower_proxy; - SessionDbus * session_dbus; - UsersServiceDbus * users_dbus_facade; - OnlineAccountsMgr * online_accounts_mgr; -}; - -static SwitcherMode get_switcher_mode (SessionMenuMgr *); - -static void init_upower_proxy (SessionMenuMgr *); - -static void update_screensaver_shortcut (SessionMenuMgr *); -static void update_user_menuitems (SessionMenuMgr *); -static void update_session_menuitems (SessionMenuMgr *); -static void update_confirmation_labels (SessionMenuMgr *); - -static void action_func_lock (SessionMenuMgr *); -static void action_func_suspend (SessionMenuMgr *); -static void action_func_hibernate (SessionMenuMgr *); -static void action_func_switch_to_lockscreen (SessionMenuMgr *); -static void action_func_switch_to_greeter (SessionMenuMgr *); -static void action_func_switch_to_guest (SessionMenuMgr *); -static void action_func_switch_to_user (AccountsUser *); -static void action_func_spawn_async (const char * cmd); - -static gboolean is_this_guest_session (void); -static gboolean is_this_live_session (void); - -static void on_guest_logged_in_changed (UsersServiceDbus *, - SessionMenuMgr *); - -static void on_user_logged_in_changed (UsersServiceDbus *, - AccountsUser *, - SessionMenuMgr *); - -/** -*** GObject init / dispose -**/ - -G_DEFINE_TYPE (SessionMenuMgr, session_menu_mgr, G_TYPE_OBJECT); - -static void -session_menu_mgr_init (SessionMenuMgr *mgr) -{ - mgr->top_mi = dbusmenu_menuitem_new (); - - /* Lockdown settings */ - GSettings * s = g_settings_new ("org.gnome.desktop.lockdown"); - g_signal_connect_swapped (s, "changed::disable-log-out", - G_CALLBACK(update_session_menuitems), mgr); - g_signal_connect_swapped (s, "changed::disable-lock-screen", - G_CALLBACK(update_user_menuitems), mgr); - g_signal_connect_swapped (s, "changed::disable-user-switching", - G_CALLBACK(update_user_menuitems), mgr); - mgr->lockdown_settings = s; - - /* Indicator settings */ - s = g_settings_new ("com.canonical.indicator.session"); - g_signal_connect_swapped (s, "changed::suppress-logout-restart-shutdown", - G_CALLBACK(update_confirmation_labels), mgr); - g_signal_connect_swapped (s, "changed::suppress-logout-menuitem", - G_CALLBACK(update_session_menuitems), mgr); - g_signal_connect_swapped (s, "changed::suppress-restart-menuitem", - G_CALLBACK(update_session_menuitems), mgr); - g_signal_connect_swapped (s, "changed::suppress-shutdown-menuitem", - G_CALLBACK(update_session_menuitems), mgr); - mgr->indicator_settings = s; - - /* Keybinding settings */ - s = g_settings_new ("org.gnome.settings-daemon.plugins.media-keys"); - g_signal_connect_swapped (s, "changed::screensaver", - G_CALLBACK(update_screensaver_shortcut), mgr); - mgr->keybinding_settings = s; - - /* listen for user events */ - mgr->users_dbus_facade = g_object_new (USERS_SERVICE_DBUS_TYPE, NULL); - g_signal_connect_swapped (mgr->users_dbus_facade, "user-list-changed", - G_CALLBACK (update_user_menuitems), mgr); - g_signal_connect (mgr->users_dbus_facade, "user-logged-in-changed", - G_CALLBACK(on_user_logged_in_changed), mgr); - g_signal_connect (mgr->users_dbus_facade, "guest-logged-in-changed", - G_CALLBACK(on_guest_logged_in_changed), mgr); - - init_upower_proxy (mgr); - - /* Online accounts menu item */ - mgr->online_accounts_mgr = online_accounts_mgr_new (); -} - -static void -session_menu_mgr_dispose (GObject *object) -{ - SessionMenuMgr * mgr = SESSION_MENU_MGR (object); - - if (mgr->cancellable != NULL) - { - g_cancellable_cancel (mgr->cancellable); - g_clear_object (&mgr->cancellable); - } - - g_clear_object (&mgr->indicator_settings); - g_clear_object (&mgr->lockdown_settings); - g_clear_object (&mgr->keybinding_settings); - g_clear_object (&mgr->upower_proxy); - g_clear_object (&mgr->users_dbus_facade); - g_clear_object (&mgr->top_mi); - g_clear_object (&mgr->session_dbus); - g_clear_object (&mgr->online_accounts_mgr); - - g_slist_free (mgr->user_menuitems); - mgr->user_menuitems = NULL; - - G_OBJECT_CLASS (session_menu_mgr_parent_class)->dispose (object); -} - -static void -session_menu_mgr_class_init (SessionMenuMgrClass * klass) -{ - GObjectClass* object_class = G_OBJECT_CLASS (klass); - object_class->dispose = session_menu_mgr_dispose; -} - -/*** -**** UPower Proxy: -**** -**** 1. While bootstrapping, we invoke the AllowSuspend and AllowHibernate -**** methods to find out whether or not those features are allowed. -**** 2. While bootstrapping, we get the CanSuspend and CanHibernate properties -**** and also listen for property changes. -**** 3. These four values are used to set suspend and hibernate's visibility. -**** -***/ - -static void -on_upower_properties_changed (SessionMenuMgr * mgr) -{ - gboolean need_refresh = FALSE; - - if (mgr->upower_proxy != NULL) - { - gboolean b; - - /* suspend */ - b = dbus_upower_get_can_suspend (mgr->upower_proxy); - if (mgr->can_suspend != b) - { - mgr->can_suspend = b; - need_refresh = TRUE; - } - - /* hibernate */ - b = dbus_upower_get_can_hibernate (mgr->upower_proxy); - if (mgr->can_hibernate != b) - { - mgr->can_hibernate = b; - need_refresh = TRUE; - } - } - - if (need_refresh) - { - update_session_menuitems (mgr); - } -} - -static void -init_upower_proxy (SessionMenuMgr * mgr) -{ - /* default values */ - mgr->can_suspend = TRUE; - mgr->can_hibernate = TRUE; - mgr->allow_suspend = TRUE; - mgr->allow_hibernate = TRUE; - - mgr->cancellable = g_cancellable_new (); - - GError * error = NULL; - mgr->upower_proxy = dbus_upower_proxy_new_for_bus_sync ( - G_BUS_TYPE_SYSTEM, - G_DBUS_PROXY_FLAGS_NONE, - UPOWER_ADDRESS, - UPOWER_PATH, - NULL, - &error); - if (error != NULL) - { - g_warning ("Error creating upower proxy: %s", error->message); - g_clear_error (&error); - } - else - { - dbus_upower_call_suspend_allowed_sync (mgr->upower_proxy, - &mgr->allow_suspend, - NULL, - &error); - if (error != NULL) - { - g_warning ("%s: %s", G_STRFUNC, error->message); - g_clear_error (&error); - } - - dbus_upower_call_hibernate_allowed_sync (mgr->upower_proxy, - &mgr->allow_hibernate, - NULL, - &error); - if (error != NULL) - { - g_warning ("%s: %s", G_STRFUNC, error->message); - g_clear_error (&error); - } - - g_signal_connect_swapped (mgr->upower_proxy, "changed", - G_CALLBACK(on_upower_properties_changed), mgr); - } -} - -/*** -**** Menuitem Helpers -***/ - -static inline void -mi_set_label (DbusmenuMenuitem * mi, const char * str) -{ - dbusmenu_menuitem_property_set (mi, DBUSMENU_MENUITEM_PROP_LABEL, str); -} - -static inline void -mi_set_type (DbusmenuMenuitem * mi, const char * str) -{ - dbusmenu_menuitem_property_set (mi, DBUSMENU_MENUITEM_PROP_TYPE, str); -} - -static inline void -mi_set_visible (DbusmenuMenuitem * mi, gboolean b) -{ - dbusmenu_menuitem_property_set_bool (mi, DBUSMENU_MENUITEM_PROP_VISIBLE, - b || DEBUG_SHOW_ALL); -} - -static inline void -mi_set_logged_in (DbusmenuMenuitem * mi, gboolean b) -{ - dbusmenu_menuitem_property_set_bool (mi, USER_ITEM_PROP_LOGGED_IN, b); -} - -static DbusmenuMenuitem* -mi_new_separator (void) -{ - DbusmenuMenuitem * mi = dbusmenu_menuitem_new (); - mi_set_type (mi, DBUSMENU_CLIENT_TYPES_SEPARATOR); - return mi; -} - -static DbusmenuMenuitem* -mi_new (const char * label) -{ - DbusmenuMenuitem * mi = dbusmenu_menuitem_new (); - mi_set_label (mi, label); - return mi; -} - -static void -check_online_accounts_status (SessionMenuMgr * mgr, DbusmenuMenuitem * mi) -{ - const gchar *disposition; - gboolean on_alert; - - disposition = - dbusmenu_menuitem_property_get (mi, DBUSMENU_MENUITEM_PROP_DISPOSITION); - on_alert = g_strcmp0 (disposition, DBUSMENU_MENUITEM_DISPOSITION_ALERT) == 0; - - mi_set_visible (mi, on_alert); -} - -static void -on_online_accounts_changed (SessionMenuMgr * mgr, const gchar * property, - GVariant *value, DbusmenuMenuitem *mi) -{ - if (g_strcmp0 (property, DBUSMENU_MENUITEM_PROP_DISPOSITION) == 0) - { - check_online_accounts_status(mgr, mi); - } -} - -/*** -**** Admin Menuitems -**** <https://wiki.ubuntu.com/SystemMenu#Admin_items> -***/ - -static void -build_admin_menuitems (SessionMenuMgr * mgr) -{ - if (!mgr->greeter_mode) - { - DbusmenuMenuitem * mi; - const gboolean show_settings = !mgr->greeter_mode; - - mi = mi_new (_("About This Computer")); - dbusmenu_menuitem_child_append (mgr->top_mi, mi); - g_signal_connect_swapped (mi, DBUSMENU_MENUITEM_SIGNAL_ITEM_ACTIVATED, - G_CALLBACK(action_func_spawn_async), CMD_INFO); - - mi = mi_new (_("Ubuntu Help")); - dbusmenu_menuitem_child_append (mgr->top_mi, mi); - g_signal_connect_swapped (mi, DBUSMENU_MENUITEM_SIGNAL_ITEM_ACTIVATED, - G_CALLBACK(action_func_spawn_async), CMD_HELP); - - mi = mi_new_separator (); - mi_set_visible (mi, show_settings); - dbusmenu_menuitem_child_append (mgr->top_mi, mi); - - mi = mi_new (_("System Settings\342\200\246")); - mi_set_visible (mi, show_settings); - dbusmenu_menuitem_child_append (mgr->top_mi, mi); - g_signal_connect_swapped (mi, DBUSMENU_MENUITEM_SIGNAL_ITEM_ACTIVATED, - G_CALLBACK(action_func_spawn_async), - CMD_SYSTEM_SETTINGS); - - mi = mgr->online_accounts_mi = - online_accounts_mgr_get_menu_item (mgr->online_accounts_mgr); - dbusmenu_menuitem_child_append (mgr->top_mi, mi); - g_signal_connect_swapped (mi, DBUSMENU_MENUITEM_SIGNAL_PROPERTY_CHANGED, - G_CALLBACK(on_online_accounts_changed), - mgr); - check_online_accounts_status (mgr, mi); - - mi = mi_new_separator (); - dbusmenu_menuitem_child_append (mgr->top_mi, mi); - } -} - -/*** -**** Session Menuitems -**** <https://wiki.ubuntu.com/SystemMenu#Session_items> -***/ - -static void -update_session_menuitems (SessionMenuMgr * mgr) -{ - gboolean v; - GSettings * s = mgr->indicator_settings; - - v = !mgr->greeter_mode - && !is_this_live_session() - && !g_settings_get_boolean (mgr->lockdown_settings, "disable-log-out") - && !g_settings_get_boolean (s, "suppress-logout-menuitem"); - mi_set_visible (mgr->logout_mi, v); - - v = mgr->can_suspend - && mgr->allow_suspend; - mi_set_visible (mgr->suspend_mi, v); - - v = mgr->can_hibernate - && mgr->allow_hibernate; - mi_set_visible (mgr->hibernate_mi, v); - - v = HAVE_RESTART_CMD - && !g_settings_get_boolean (s, "suppress-restart-menuitem"); - mi_set_visible (mgr->restart_mi, v); - - v = !g_settings_get_boolean (s, "suppress-shutdown-menuitem"); - mi_set_visible (mgr->shutdown_mi, v); -} - -/* Update the ellipses when the confirmation setting changes. - * - * <http://developer.gnome.org/hig-book/3.0/menus-design.html.en>: - * "Label the menu item with a trailing ellipsis ("...") only if the - * command requires further input from the user before it can be performed." - */ -static void -update_confirmation_labels (SessionMenuMgr * mgr) -{ - const gboolean confirm_needed = !g_settings_get_boolean ( - mgr->indicator_settings, - "suppress-logout-restart-shutdown"); - - mi_set_label (mgr->logout_mi, confirm_needed ? _("Log Out\342\200\246") - : _("Log Out")); - - mi_set_label (mgr->shutdown_mi, confirm_needed ? _("Shut Down\342\200\246") - : _("Shut Down")); - - mi_set_label (mgr->restart_mi, confirm_needed ? _("Restart\342\200\246") - : _("Restart")); -} - -static void -build_session_menuitems (SessionMenuMgr* mgr) -{ - DbusmenuMenuitem * mi; - - mi = mgr->logout_mi = mi_new (_("Log Out\342\200\246")); - dbusmenu_menuitem_child_append (mgr->top_mi, mi); - g_signal_connect_swapped (mi, DBUSMENU_MENUITEM_SIGNAL_ITEM_ACTIVATED, - G_CALLBACK(action_func_spawn_async), CMD_LOGOUT); - - mi = mgr->suspend_mi = mi_new (_("Suspend")); - dbusmenu_menuitem_child_append (mgr->top_mi, mi); - g_signal_connect_swapped (mi, DBUSMENU_MENUITEM_SIGNAL_ITEM_ACTIVATED, - G_CALLBACK(action_func_suspend), mgr); - - mi = mgr->hibernate_mi = mi_new (_("Hibernate")); - dbusmenu_menuitem_child_append (mgr->top_mi, mi); - g_signal_connect_swapped (mi, DBUSMENU_MENUITEM_SIGNAL_ITEM_ACTIVATED, - G_CALLBACK(action_func_hibernate), mgr); - - mi = mgr->restart_mi = mi_new (_("Restart\342\200\246")); - dbusmenu_menuitem_child_append (mgr->top_mi, mi); - g_signal_connect_swapped (mi, DBUSMENU_MENUITEM_SIGNAL_ITEM_ACTIVATED, - G_CALLBACK(action_func_spawn_async), CMD_RESTART); - - mi = mgr->shutdown_mi = mi_new (_("Shut Down\342\200\246")); - dbusmenu_menuitem_child_append (mgr->top_mi, mi); - g_signal_connect_swapped (mi, DBUSMENU_MENUITEM_SIGNAL_ITEM_ACTIVATED, - G_CALLBACK(action_func_spawn_async), CMD_SHUTDOWN); - - update_confirmation_labels (mgr); - update_session_menuitems (mgr); -} - -/**** -***** User Menuitems -***** https://wiki.ubuntu.com/SystemMenu#Account-switching_items -****/ - -/* Local extensions to AccountsUser */ - -static GQuark -get_menuitem_quark (void) -{ - static GQuark q = 0; - - if (G_UNLIKELY(!q)) - { - q = g_quark_from_static_string ("menuitem"); - } - - return q; -} - -static DbusmenuMenuitem* -user_get_menuitem (AccountsUser * user) -{ - return g_object_get_qdata (G_OBJECT(user), get_menuitem_quark()); -} - -static void -user_clear_menuitem (AccountsUser * user) -{ - g_object_steal_qdata (G_OBJECT(user), get_menuitem_quark()); -} - -static void -user_set_menuitem (AccountsUser * user, DbusmenuMenuitem * mi) -{ - g_object_set_qdata (G_OBJECT(user), get_menuitem_quark(), mi); - - g_object_weak_ref (G_OBJECT(mi), (GWeakNotify)user_clear_menuitem, user); -} - -/***/ - -static GQuark -get_mgr_quark (void) -{ - static GQuark q = 0; - - if (G_UNLIKELY(!q)) - { - q = g_quark_from_static_string ("session-menu-mgr"); - } - - return q; -} - -static SessionMenuMgr* -user_get_mgr (AccountsUser * user) -{ - return g_object_get_qdata (G_OBJECT(user), get_mgr_quark()); -} - -static void -user_set_mgr (AccountsUser * user, SessionMenuMgr * mgr) -{ - g_object_set_qdata (G_OBJECT(user), get_mgr_quark(), mgr); -} - -/***/ - -static GQuark -get_collision_quark (void) -{ - static GQuark q = 0; - - if (G_UNLIKELY(!q)) - { - q = g_quark_from_static_string ("name-collision"); - } - - return q; -} - -static gboolean -user_has_name_collision (AccountsUser * u) -{ - return g_object_get_qdata (G_OBJECT(u), get_collision_quark()) != NULL; -} - -static void -user_set_name_collision (AccountsUser * u, gboolean b) -{ - g_object_set_qdata (G_OBJECT(u), get_collision_quark(), GINT_TO_POINTER(b)); -} - -/*** -**** -***/ - -static void -on_guest_logged_in_changed (UsersServiceDbus * usd, - SessionMenuMgr * mgr) -{ - if (mgr->guest_mi != NULL) - { - mi_set_logged_in (mgr->guest_mi, - users_service_dbus_is_guest_logged_in (usd)); - } -} - -/* When a user's login state changes, - update the corresponding menuitem's LOGGED_IN property */ -static void -on_user_logged_in_changed (UsersServiceDbus * usd, - AccountsUser * user, - SessionMenuMgr * mgr) -{ - DbusmenuMenuitem * mi = user_get_menuitem (user); - - if (mi != NULL) - { - mi_set_logged_in (mi, users_service_dbus_is_user_logged_in (usd, user)); - } -} - -static void -update_screensaver_shortcut (SessionMenuMgr * mgr) -{ - gchar * s = g_settings_get_string (mgr->keybinding_settings, "screensaver"); - g_debug ("%s Screensaver shortcut changed to: '%s'", G_STRLOC, s); - - if (mgr->lock_mi != NULL) - { - dbusmenu_menuitem_property_set_shortcut_string (mgr->lock_mi, s); - } - - if (mgr->lock_switch_mi != NULL) - { - dbusmenu_menuitem_property_set_shortcut_string (mgr->lock_switch_mi, s); - } - - if (mgr->screensaver_mi != NULL) - { - dbusmenu_menuitem_property_set_shortcut_string (mgr->screensaver_mi, s); - } - - g_free (s); -} - -static void -update_user_menuitem_icon (DbusmenuMenuitem * mi, AccountsUser * user) -{ - const gchar * str = accounts_user_get_icon_file (user); - - if (!str || !*str) - { - str = USER_ITEM_ICON_DEFAULT; - } - - dbusmenu_menuitem_property_set (mi, USER_ITEM_PROP_ICON, str); -} - -static void -update_user_menuitem_name (DbusmenuMenuitem * mi, AccountsUser * user) -{ - GString * gstr = g_string_new (accounts_user_get_real_name (user)); - - if (user_has_name_collision (user)) - g_string_append_printf (gstr, " (%s)", accounts_user_get_user_name(user)); - - if (!gstr->len) - g_string_assign (gstr, accounts_user_get_user_name(user)); - - dbusmenu_menuitem_property_set (mi, USER_ITEM_PROP_NAME, gstr->str); - g_string_free (gstr, TRUE); -} - -static void -on_user_property_changed (AccountsUser * user, - GParamSpec * pspec, - DbusmenuMenuitem * mi) -{ - static const char * interned_icon_file = NULL; - static const char * interned_real_name = NULL; - static const char * interned_user_name = NULL; - - if (G_UNLIKELY (interned_icon_file == NULL)) - { - interned_icon_file = g_intern_static_string ("icon-file"); - interned_user_name = g_intern_static_string ("user-name"); - interned_real_name = g_intern_static_string ("real-name"); - } - - if (pspec->name == interned_icon_file) - { - update_user_menuitem_icon (mi, user); - } - else if ((pspec->name == interned_real_name) - || (pspec->name == interned_user_name)) - { - /* name changing can affect other menuitems too by invalidating - the sort order or name collision flags... so let's rebuild */ - update_user_menuitems (user_get_mgr (user)); - } -} - -typedef struct -{ - gpointer instance; - gulong handler_id; -} -SignalHandlerData; - -/* when a user menuitem is destroyed, - it should stop listening for its UserAccount's property changes */ -static void -on_user_menuitem_destroyed (SignalHandlerData * data) -{ - g_signal_handler_disconnect (data->instance, data->handler_id); - g_free (data); -} - -static DbusmenuMenuitem* -user_menuitem_new (AccountsUser * user, SessionMenuMgr * mgr) -{ - DbusmenuMenuitem * mi = dbusmenu_menuitem_new (); - mi_set_type (mi, USER_ITEM_TYPE); - - /* set the name & icon and listen for property changes */ - update_user_menuitem_name (mi, user); - update_user_menuitem_icon (mi, user); - SignalHandlerData * hd = g_new0 (SignalHandlerData, 1); - hd->instance = user; - hd->handler_id = g_signal_connect (user, "notify", - G_CALLBACK(on_user_property_changed), mi); - g_object_weak_ref (G_OBJECT(mi), (GWeakNotify)on_user_menuitem_destroyed, hd); - - /* set the logged-in property */ - mi_set_logged_in (mi, - users_service_dbus_is_user_logged_in (mgr->users_dbus_facade, user)); - - /* set the is-current-user property */ - const gboolean is_current_user = - !g_strcmp0 (g_get_user_name(), accounts_user_get_user_name(user)); - - dbusmenu_menuitem_property_set_bool (mi, - USER_ITEM_PROP_IS_CURRENT_USER, - is_current_user); - - /* set the switch-to-user action */ - g_signal_connect_swapped (mi, DBUSMENU_MENUITEM_SIGNAL_ITEM_ACTIVATED, - G_CALLBACK (action_func_switch_to_user), user); - - /* give this AccountsUser a hook back to this menuitem */ - user_set_menuitem (user, mi); - user_set_mgr (user, mgr); - - return mi; -} - -/* for sorting AccountsUsers from most to least frequently used */ -static gint -compare_users_by_login_frequency (gconstpointer a, gconstpointer b) -{ - const guint64 a_freq = accounts_user_get_login_frequency (ACCOUNTS_USER(a)); - const guint64 b_freq = accounts_user_get_login_frequency (ACCOUNTS_USER(b)); - if (a_freq > b_freq) return -1; - if (a_freq < b_freq) return 1; - return 0; -} - -/* for sorting AccountsUsers alphabetically */ -static gint -compare_users_by_username (gconstpointer ga, gconstpointer gb) -{ - AccountsUser * a = ACCOUNTS_USER(ga); - AccountsUser * b = ACCOUNTS_USER(gb); - - const int ret = g_strcmp0 (accounts_user_get_real_name (a), - accounts_user_get_real_name (b)); - - if (!ret) /* names are the same, so both have a name collision */ - { - user_set_name_collision (a, TRUE); - user_set_name_collision (b, TRUE); - } - - return ret; -} - -static gboolean -is_user_switching_allowed (SessionMenuMgr * mgr) -{ - /* maybe it's locked down */ - if (g_settings_get_boolean (mgr->lockdown_settings, "disable-user-switching")) - { - return FALSE; - } - - /* maybe the seat doesn't support activation */ - if (!users_service_dbus_can_activate_session (mgr->users_dbus_facade)) - { - return FALSE; - } - - return TRUE; -} - -static void -build_user_menuitems (SessionMenuMgr * mgr) -{ - g_return_if_fail (!mgr->greeter_mode); - - DbusmenuMenuitem * mi; - GSList * items = NULL; - gint pos = mgr->user_menuitem_index; - const char * current_real_name = NULL; - - /** - *** Start Screen Saver - *** Switch Account... - *** Lock - *** Lock / Switch Account... - **/ - - const SwitcherMode mode = get_switcher_mode (mgr); - - mi = mgr->screensaver_mi = mi_new (_("Start Screen Saver")); - mi_set_visible (mi, mode == SWITCHER_MODE_SCREENSAVER); - dbusmenu_menuitem_child_add_position (mgr->top_mi, mi, pos++); - items = g_slist_prepend (items, mi); - g_signal_connect_swapped (mi, DBUSMENU_MENUITEM_SIGNAL_ITEM_ACTIVATED, - G_CALLBACK (action_func_lock), mgr); - - mi = mi_new (_("Switch User Account\342\200\246")); - mi_set_visible (mi, mode == SWITCHER_MODE_SWITCH); - dbusmenu_menuitem_child_add_position (mgr->top_mi, mi, pos++); - items = g_slist_prepend (items, mi); - g_signal_connect_swapped (mi, DBUSMENU_MENUITEM_SIGNAL_ITEM_ACTIVATED, - G_CALLBACK (action_func_switch_to_greeter), mgr); - - mi = mgr->lock_mi = mi_new (_("Lock")); - mi_set_visible (mi, mode == SWITCHER_MODE_LOCK); - dbusmenu_menuitem_child_add_position (mgr->top_mi, mi, pos++); - items = g_slist_prepend (items, mi); - g_signal_connect_swapped (mi, DBUSMENU_MENUITEM_SIGNAL_ITEM_ACTIVATED, - G_CALLBACK (action_func_switch_to_lockscreen), mgr); - - mi = mgr->lock_switch_mi = mi_new (_("Lock/Switch Account\342\200\246")); - mi_set_visible (mi, mode == SWITCHER_MODE_SWITCH_OR_LOCK); - dbusmenu_menuitem_child_add_position (mgr->top_mi, mi, pos++); - items = g_slist_prepend (items, mi); - g_signal_connect_swapped (mi, DBUSMENU_MENUITEM_SIGNAL_ITEM_ACTIVATED, - G_CALLBACK (action_func_switch_to_lockscreen), mgr); - - const gboolean is_guest = is_this_guest_session (); - const gboolean guest_allowed = - users_service_dbus_guest_session_enabled (mgr->users_dbus_facade); - mi = mgr->guest_mi = dbusmenu_menuitem_new (); - mi_set_type (mi, USER_ITEM_TYPE); - mi_set_visible (mi, !is_guest && guest_allowed); - dbusmenu_menuitem_property_set (mi, USER_ITEM_PROP_NAME, _("Guest Session")); - dbusmenu_menuitem_child_add_position (mgr->top_mi, mi, pos++); - on_guest_logged_in_changed (mgr->users_dbus_facade, mgr); - items = g_slist_prepend (items, mi); - g_signal_connect_swapped (mi, DBUSMENU_MENUITEM_SIGNAL_ITEM_ACTIVATED, - G_CALLBACK (action_func_switch_to_guest), mgr); - - if (guest_allowed && is_guest) - { - current_real_name = _("Guest"); - } - - /*** - **** Users - ***/ - - /* if we can switch to another user account, show them here */ - const char * const username = g_get_user_name(); - GList * users = users_service_dbus_get_user_list (mgr->users_dbus_facade); - - /* since we're building (or rebuilding) from scratch, - clear the name collision flags */ - GList * u; - for (u=users; u!=NULL; u=u->next) - { - AccountsUser * user = ACCOUNTS_USER(u->data); - - user_set_name_collision (user, FALSE); - - if (!g_strcmp0 (username, accounts_user_get_user_name(user))) - { - current_real_name = accounts_user_get_real_name (user); - } - } - - if (is_user_switching_allowed (mgr)) - { - /* pick the most frequently used accounts */ - const int MAX_USERS = 12; /* this limit comes from the spec */ - if (g_list_length(users) > MAX_USERS) - { - users = g_list_sort (users, compare_users_by_login_frequency); - GList * last = g_list_nth (users, MAX_USERS-1); - GList * remainder = last->next; - last->next = NULL; - remainder->prev = NULL; - g_list_free (remainder); - } - - /* Sort the users by name for display */ - users = g_list_sort (users, compare_users_by_username); - - /* Create menuitems for them */ - int i; - for (i=0, u=users; i<MAX_USERS && u!=NULL; u=u->next, i++) - { - AccountsUser * user = u->data; - DbusmenuMenuitem * mi = user_menuitem_new (user, mgr); - dbusmenu_menuitem_child_add_position (mgr->top_mi, mi, pos++); - items = g_slist_prepend (items, mi); - } - } - - g_list_free (users); - - /* separator */ - if (mode != SWITCHER_MODE_SCREENSAVER && !is_guest && guest_allowed) - { - mi = mi_new_separator (); - dbusmenu_menuitem_child_add_position (mgr->top_mi, mi, pos++); - items = g_slist_prepend (items, mi); - } - - if (current_real_name != NULL) - { - session_dbus_set_users_real_name (mgr->session_dbus, - current_real_name); - } - - update_screensaver_shortcut (mgr); - mgr->user_menuitems = items; -} - -static void -update_user_menuitems (SessionMenuMgr * mgr) -{ - /* remove any previous user menuitems */ - GSList * l; - for (l=mgr->user_menuitems; l!=NULL; l=l->next) - { - dbusmenu_menuitem_child_delete (mgr->top_mi, l->data); - } - g_slist_free (mgr->user_menuitems); - mgr->user_menuitems = NULL; - - /* add fresh user menuitems */ - if (!mgr->greeter_mode) - { - build_user_menuitems (mgr); - } -} - -/*** -**** Actions! -***/ - -static void -action_func_spawn_async (const char * cmd) -{ - GError * error = NULL; - - g_debug ("%s calling \"%s\"", G_STRFUNC, cmd); - g_spawn_command_line_async (cmd, &error); - - if (error != NULL) - { - g_warning ("Unable to execute \"%s\": %s", cmd, error->message); - g_clear_error (&error); - } -} - -/* Calling "Lock" locks the screen & goes to black. - Calling "SimulateUserActivity" afterwards shows the Lock Screen. */ -static void -lock_helper (SessionMenuMgr * mgr, gboolean show_lock_screen) -{ - if (!g_settings_get_boolean (mgr->lockdown_settings, "disable-lock-screen")) - { - GError * error = NULL; - GDBusProxy * proxy = g_dbus_proxy_new_for_bus_sync ( - G_BUS_TYPE_SESSION, - G_DBUS_PROXY_FLAGS_NONE, - NULL, - "org.gnome.ScreenSaver", - "/org/gnome/ScreenSaver", - "org.gnome.ScreenSaver", - NULL, - &error); - - if (error == NULL) - { - g_dbus_proxy_call_sync (proxy, "Lock", - NULL, G_DBUS_CALL_FLAGS_NONE, -1, NULL, - &error); - } - - if ((error == NULL) && show_lock_screen) - { - g_dbus_proxy_call_sync (proxy, "SimulateUserActivity", - NULL, G_DBUS_CALL_FLAGS_NONE, -1, NULL, - &error); - } - - if (error != NULL) - { - g_warning ("Error locking screen: %s", error->message); - } - - g_clear_object (&proxy); - g_clear_error (&error); - } -} - -static void -action_func_lock (SessionMenuMgr * mgr) -{ - lock_helper (mgr, FALSE); -} - -static void -action_func_switch_to_lockscreen (SessionMenuMgr * mgr) -{ - lock_helper (mgr, TRUE); -} - -static void -action_func_switch_to_greeter (SessionMenuMgr * mgr) -{ - action_func_lock (mgr); - users_service_dbus_show_greeter (mgr->users_dbus_facade); -} - -static void -action_func_switch_to_user (AccountsUser * user) -{ - SessionMenuMgr * mgr = user_get_mgr (user); - - g_return_if_fail (mgr != NULL); - - if (g_strcmp0 (g_get_user_name(), accounts_user_get_user_name(user)) != 0) - { - action_func_lock (mgr); - users_service_dbus_activate_user_session (mgr->users_dbus_facade, user); - } -} - -static void -action_func_switch_to_guest (SessionMenuMgr * mgr) -{ - action_func_lock (mgr); - users_service_dbus_activate_guest_session (mgr->users_dbus_facade); -} - -static void -action_func_suspend (SessionMenuMgr * mgr) -{ - GError * error = NULL; - - dbus_upower_call_suspend_sync (mgr->upower_proxy, - mgr->cancellable, - &error); - - if (error != NULL) - { - g_warning ("%s: %s", G_STRFUNC, error->message); - g_clear_error (&error); - } -} - -static void -action_func_hibernate (SessionMenuMgr * mgr) -{ - GError * error = NULL; - - dbus_upower_call_hibernate_sync (mgr->upower_proxy, - mgr->cancellable, - &error); - - if (error != NULL) - { - g_warning ("%s: %s", G_STRFUNC, error->message); - g_clear_error (&error); - } -} - -/*** -**** -***/ - -static gboolean -is_this_guest_session (void) -{ - /* FIXME: this test has been here awhile and seems to work, - but seems brittle to me */ - return geteuid() < 500; -} - -static gboolean -is_this_live_session (void) -{ - const struct passwd * const pw = getpwuid (geteuid()); - return (pw->pw_uid==999) && !g_strcmp0("ubuntu",pw->pw_name); -} - -static SwitcherMode -get_switcher_mode (SessionMenuMgr * mgr) -{ - SwitcherMode mode; - - const gboolean can_lock = !g_settings_get_boolean (mgr->lockdown_settings, - "disable-lock-screen"); - const gboolean can_switch = is_user_switching_allowed (mgr); - - if (!can_lock && !can_switch) /* hmm, quite an extreme lockdown */ - { - mode = SWITCHER_MODE_NONE; - } - else if (is_this_live_session()) /* live sessions can't lock or switch */ - { - mode = SWITCHER_MODE_SCREENSAVER; - } - else if (!can_switch) /* switching's locked down */ - { - mode = SWITCHER_MODE_LOCK; - } - else if (is_this_guest_session ()) /* guest sessions can't lock */ - { - mode = SWITCHER_MODE_SWITCH; - } - else /* both locking & switching are allowed */ - { - GList * l = users_service_dbus_get_user_list (mgr->users_dbus_facade); - const size_t user_count = g_list_length (l); - g_list_free (l); - - /* only show switch mode if we have users to switch to */ - mode = user_count > (is_this_guest_session() ? 0 : 1) - ? SWITCHER_MODE_SWITCH_OR_LOCK - : SWITCHER_MODE_LOCK; - } - - return mode; -} - - -/*** -**** -***/ - -SessionMenuMgr* -session_menu_mgr_new (SessionDbus * session_dbus, - gboolean greeter_mode) -{ - SessionMenuMgr* mgr = g_object_new (SESSION_TYPE_MENU_MGR, NULL); - mgr->greeter_mode = greeter_mode; - mgr->session_dbus = g_object_ref (session_dbus); - build_admin_menuitems (mgr); - const guint n = g_list_length (dbusmenu_menuitem_get_children (mgr->top_mi)); - mgr->user_menuitem_index = n; - update_user_menuitems (mgr); - build_session_menuitems (mgr); - - /* After we have the session menu items built we can look to - align them with UPower */ - on_upower_properties_changed (mgr); - - return mgr; -} - -/** - * session_menu_mgr_get_menu: - * - * Returns: (transfer none): the manager's menu. - */ -DbusmenuMenuitem * -session_menu_mgr_get_menu (SessionMenuMgr * mgr) -{ - g_return_val_if_fail (IS_SESSION_MENU_MGR(mgr), NULL); - - return mgr->top_mi; -} |