/* Copyright 2011 Canonical Ltd. Authors: 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 <libdbusmenu-glib/client.h> #include "user-menu-mgr.h" #include "settings-helper.h" #include "dbus-shared-names.h" #include "dbusmenu-shared.h" #include "lock-helper.h" #include "users-service-dbus.h" static GSettings* settings = NULL; static DbusmenuMenuitem *switch_menuitem = NULL; struct _UserMenuMgr { GObject parent_instance; UsersServiceDbus* users_dbus_interface; DbusmenuMenuitem* root_item; gint user_count; SessionDbus* session_dbus_interface; }; static void activate_new_session (DbusmenuMenuitem * mi, guint timestamp, gpointer user_data); static void activate_user_session (DbusmenuMenuitem *mi, guint timestamp, gpointer user_data); static gint compare_users_by_username (const gchar *a, const gchar *b); static void activate_online_accounts (DbusmenuMenuitem *mi, guint timestamp, gpointer user_data); static void user_menu_mgr_rebuild_items (UserMenuMgr *self, gboolean greeter_mode); static gboolean check_new_session (); static void user_change (UsersServiceDbus *service, const gchar *user_id, gpointer user_data); static void ensure_gconf_client (); static gboolean check_guest_session (void); static void activate_guest_session (DbusmenuMenuitem * mi, guint timestamp, gpointer user_data); G_DEFINE_TYPE (UserMenuMgr, user_menu_mgr, G_TYPE_OBJECT); static void user_menu_mgr_init (UserMenuMgr *self) { self->users_dbus_interface = g_object_new (USERS_SERVICE_DBUS_TYPE, NULL); self->root_item = dbusmenu_menuitem_new (); g_signal_connect (G_OBJECT (self->users_dbus_interface), "user-added", G_CALLBACK (user_change), self); g_signal_connect (G_OBJECT (self->users_dbus_interface), "user-removed", G_CALLBACK (user_change), self); } static void user_menu_mgr_finalize (GObject *object) { /* TODO: Add deinitalization code here */ G_OBJECT_CLASS (user_menu_mgr_parent_class)->finalize (object); } static void user_menu_mgr_class_init (UserMenuMgrClass *klass) { GObjectClass* object_class = G_OBJECT_CLASS (klass); //GObjectClass* parent_class = G_OBJECT_CLASS (klass); object_class->finalize = user_menu_mgr_finalize; } /* Builds up the menu for us */ static void user_menu_mgr_rebuild_items (UserMenuMgr *self, gboolean greeter_mode) { DbusmenuMenuitem *mi = NULL; DbusmenuMenuitem *guest_mi = NULL; GList *u; UserData *user; gboolean can_activate; GList *children; /* Make sure we have a valid GConf client, and build one if needed */ ensure_gconf_client (); /* Check to see which menu items we're allowed to have */ can_activate = users_service_dbus_can_activate_session (self->users_dbus_interface) && !g_settings_get_boolean (settings, LOCKDOWN_KEY_USER); /* Remove the old menu items if that makes sense */ children = dbusmenu_menuitem_take_children (self->root_item); g_list_foreach (children, (GFunc)g_object_unref, NULL); g_list_free (children); /* Set to NULL just incase we don't end up building one */ users_service_dbus_set_guest_item(self->users_dbus_interface, NULL); /* Build all of the user switching items */ if (can_activate == TRUE) { if (check_new_session ()){ switch_menuitem = dbusmenu_menuitem_new (); dbusmenu_menuitem_property_set (switch_menuitem, DBUSMENU_MENUITEM_PROP_TYPE, MENU_SWITCH_TYPE); dbusmenu_menuitem_property_set (switch_menuitem, MENU_SWITCH_USER, g_get_user_name()); dbusmenu_menuitem_child_append (self->root_item, switch_menuitem); g_signal_connect (G_OBJECT (switch_menuitem), DBUSMENU_MENUITEM_SIGNAL_ITEM_ACTIVATED, G_CALLBACK (activate_new_session), self->users_dbus_interface); } if (check_guest_session ()) { guest_mi = dbusmenu_menuitem_new (); dbusmenu_menuitem_property_set (guest_mi, DBUSMENU_MENUITEM_PROP_TYPE, USER_ITEM_TYPE); dbusmenu_menuitem_property_set (guest_mi, USER_ITEM_PROP_NAME, _("Guest Session")); dbusmenu_menuitem_property_set_bool (guest_mi, USER_ITEM_PROP_LOGGED_IN, FALSE); dbusmenu_menuitem_child_append (self->root_item, guest_mi); g_signal_connect (G_OBJECT (guest_mi), DBUSMENU_MENUITEM_SIGNAL_ITEM_ACTIVATED, G_CALLBACK (activate_guest_session), self); users_service_dbus_set_guest_item (self->users_dbus_interface, guest_mi); } GList * users = NULL; users = users_service_dbus_get_user_list (self->users_dbus_interface); self->user_count = g_list_length(users); gboolean user_menu_is_visible = FALSE; if (!greeter_mode){ user_menu_is_visible = self->user_count > 1; } session_dbus_set_user_menu_visibility (self->session_dbus_interface, user_menu_is_visible); if (self->user_count > MINIMUM_USERS && self->user_count < MAXIMUM_USERS) { users = g_list_sort (users, (GCompareFunc)compare_users_by_username); } for (u = users; u != NULL; u = g_list_next (u)) { user = u->data; g_debug ("%p: %s", user, user->real_name); user->service = self->users_dbus_interface; if (g_strcmp0(user->user_name, "guest") == 0) { /* Check to see if the guest has sessions and so therefore should get a check mark. */ if (user->sessions != NULL) { dbusmenu_menuitem_property_set_bool (guest_mi, USER_ITEM_PROP_LOGGED_IN, TRUE); } /* If we're showing user accounts, keep going through the list */ if (self->user_count > MINIMUM_USERS && self->user_count < MAXIMUM_USERS) { continue; } /* If not, we can stop here */ break; } if (self->user_count > MINIMUM_USERS && self->user_count < MAXIMUM_USERS) { mi = dbusmenu_menuitem_new (); dbusmenu_menuitem_property_set (mi, DBUSMENU_MENUITEM_PROP_TYPE, USER_ITEM_TYPE); if (user->real_name_conflict) { gchar * conflictedname = g_strdup_printf("%s (%s)", user->real_name, user->user_name); dbusmenu_menuitem_property_set (mi, USER_ITEM_PROP_NAME, conflictedname); g_free(conflictedname); } else { //g_debug ("%i %s", (gint)user->uid, user->real_name); //g_debug ("users uid = %i", (gint)user->uid); //g_debug ("users real name = %s", user->real_name); if (user == NULL){ g_debug ("USER pointer is NULL"); return; } g_debug ("%p: %s", user, user->real_name); dbusmenu_menuitem_property_set (mi, USER_ITEM_PROP_NAME, user->real_name); } dbusmenu_menuitem_property_set_bool (mi, USER_ITEM_PROP_LOGGED_IN, user->sessions != NULL); if (user->icon_file != NULL && user->icon_file[0] != '\0') { dbusmenu_menuitem_property_set(mi, USER_ITEM_PROP_ICON, user->icon_file); } else { dbusmenu_menuitem_property_set(mi, USER_ITEM_PROP_ICON, USER_ITEM_ICON_DEFAULT); } gboolean logged_in = g_strcmp0 (user->user_name, g_get_user_name()) == 0; dbusmenu_menuitem_property_set_bool (mi, USER_ITEM_PROP_IS_CURRENT_USER, logged_in); if (logged_in == TRUE){ g_debug ("about to set the users real name to %s for user %s", user->real_name, user->user_name); session_dbus_set_users_real_name (self->session_dbus_interface, user->real_name); } dbusmenu_menuitem_child_append (self->root_item, mi); g_signal_connect (G_OBJECT (mi), DBUSMENU_MENUITEM_SIGNAL_ITEM_ACTIVATED, G_CALLBACK (activate_user_session), user); user->menuitem = mi; } } g_list_free(users); } // Add the online accounts and separator DbusmenuMenuitem * separator1 = dbusmenu_menuitem_new(); dbusmenu_menuitem_property_set (separator1, DBUSMENU_MENUITEM_PROP_TYPE, DBUSMENU_CLIENT_TYPES_SEPARATOR); dbusmenu_menuitem_child_append (self->root_item, separator1); DbusmenuMenuitem * online_accounts_item = dbusmenu_menuitem_new(); dbusmenu_menuitem_property_set (online_accounts_item, DBUSMENU_MENUITEM_PROP_TYPE, DBUSMENU_CLIENT_TYPES_DEFAULT); dbusmenu_menuitem_property_set (online_accounts_item, DBUSMENU_MENUITEM_PROP_LABEL, _("Online Accounts…")); g_signal_connect (G_OBJECT (online_accounts_item), DBUSMENU_MENUITEM_SIGNAL_ITEM_ACTIVATED, G_CALLBACK (activate_online_accounts), NULL); dbusmenu_menuitem_child_append (self->root_item, online_accounts_item); } /* Checks to see if we can create sessions */ // TODO what is this ? static gboolean check_new_session () { return TRUE; } /* Check to see if the lockdown key is protecting from locking the screen. If not, lock it. */ static void lock_if_possible (void) { ensure_gconf_client (); if (!g_settings_get_boolean (settings, LOCKDOWN_KEY_SCREENSAVER)) { lock_screen(NULL, 0, NULL); } return; } /* Starts a new generic session */ static void activate_new_session (DbusmenuMenuitem * mi, guint timestamp, gpointer user_data) { lock_if_possible(); users_service_dbus_show_greeter (USERS_SERVICE_DBUS(user_data)); return; } /* Activates a session for a particular user. */ static void activate_user_session (DbusmenuMenuitem *mi, guint timestamp, gpointer user_data) { UserData *user = (UserData *)user_data; UsersServiceDbus *service = user->service; lock_if_possible(); users_service_dbus_activate_user_session (service, user); } /* Comparison function to look into the UserData struct to compare by using the username value */ static gint compare_users_by_username (const gchar *a, const gchar *b) { UserData *user1 = (UserData *)a; UserData *user2 = (UserData *)b; gint retval = g_strcmp0 (user1->real_name, user2->real_name); /* If they're the same, they're both in conflict. */ if (retval == 0) { user1->real_name_conflict = TRUE; user2->real_name_conflict = TRUE; } return retval; } // TODO // Wait until dialog is complete to find out name to pass // to the control centre. static void activate_online_accounts (DbusmenuMenuitem *mi, guint timestamp, gpointer user_data) { GError * error = NULL; if (!g_spawn_command_line_async("gnome-control-center online-accounts", &error)) { g_warning("Unable to show control centre: %s", error->message); g_error_free(error); } } /* Signal called when a user is added. It updates the count and rebuilds the menu */ static void user_change (UsersServiceDbus *service, const gchar *user_id, gpointer user_data) { //DbusmenuMenuitem *root = (DbusmenuMenuitem *)user_data; // TODO sort this out. //rebuild_user_items (root, service); return; } /* Ensures that we have a GConf client and if we build one set up the signal handler. */ static void ensure_gconf_client () { if(!settings) { settings = g_settings_new (SESSION_SCHEMA); } return; } DbusmenuMenuitem* user_mgr_get_root_item (UserMenuMgr* self) { return self->root_item; } /* Checks to see if we should show the guest suession item */ static gboolean check_guest_session (void) { if (geteuid() < 500) { /* System users shouldn't have guest account shown. Mosly this would be the case of the guest user itself. */ return FALSE; } return TRUE; } /* Called when someone clicks on the guest session item. */ static void activate_guest_session (DbusmenuMenuitem * mi, guint timestamp, gpointer user_data) { g_return_if_fail (USER_IS_MENU_MGR (user_data)); UserMenuMgr* user_mgr = USER_MENU_MGR(user_data); UsersServiceDbus *service = user_mgr->users_dbus_interface; lock_if_possible(); if (users_service_dbus_activate_guest_session(service)) { return; } } /* * Clean Entry Point */ UserMenuMgr* user_menu_mgr_new (SessionDbus* session_dbus, gboolean greeter_mode) { UserMenuMgr* user_mgr = g_object_new (USER_TYPE_MENU_MGR, NULL); user_mgr->session_dbus_interface = session_dbus; user_menu_mgr_rebuild_items (user_mgr, greeter_mode); return user_mgr; }