+++ /dev/null
-/* -*- Mode: C; indent-tabs-mode: nil; tab-width: 4 -*-
- *
- * Copyright (C) 2010-2011 Robert Ancell.
- * Author: Robert Ancell <robert.ancell@canonical.com>
- *
- * This program is free software: you can redistribute it and/or modify it under
- * the terms of the GNU General Public License as published by the Free Software
- * Foundation, either version 3 of the License, or (at your option) any later
- * version. See http://www.gnu.org/copyleft/gpl.html the full text of the
- * license.
- */
-
-#include <config.h>
-#include <stdlib.h>
-#include <string.h>
-#include <gio/gdesktopappinfo.h>
-
-#include "display.h"
-#include "configuration.h"
-#include "ldm-marshal.h"
-#include "greeter.h"
-
-enum
-{
- CREATE_SESSION,
- READY,
- SWITCH_TO_USER,
- SWITCH_TO_GUEST,
- GET_GUEST_USERNAME,
- DISPLAY_SERVER_READY,
- START_GREETER,
- START_SESSION,
- CREATE_DISPLAY,
- STOPPED,
- LAST_SIGNAL
-};
-static guint signals[LAST_SIGNAL] = { 0 };
-
-struct DisplayPrivate
-{
- /* Display server */
- DisplayServer *display_server;
-
- /* TRUE if the session can run on the same display server as the greeter */
- gboolean share_display_server;
-
- /* Greeter session */
- gchar *greeter_session;
-
- /* TRUE if the user list should be shown */
- gboolean greeter_hide_users;
-
- /* TRUE if a manual login option should be shown */
- gboolean greeter_show_manual_login;
-
- /* TRUE if a remote login option should be shown */
- gboolean greeter_show_remote_login;
-
- /* TRUE if the greeter is a lock screen */
- gboolean greeter_is_lock;
-
- /* Session requested to log into */
- SessionType user_session_type;
- gchar *user_session;
-
- /* Program to run sessions through */
- gchar *session_wrapper;
-
- /* Program to run greeter sessions through */
- gchar *greeter_wrapper;
-
- /* TRUE if in a user session */
- gboolean in_user_session;
-
- /* TRUE if have got an X server / started a greeter */
- gboolean is_ready;
-
- /* Session process */
- Session *session;
-
- /* Communication link to greeter */
- Greeter *greeter;
-
- /* User that should be automatically logged in */
- gchar *autologin_user;
- gboolean autologin_guest;
- gint autologin_timeout;
-
- /* TRUE if start greeter if fail to login */
- gboolean start_greeter_if_fail;
-
- /* Hint to select user in greeter */
- gchar *select_user_hint;
- gboolean select_guest_hint;
- gboolean select_user_attempt_login;
-
- /* TRUE if allowed to log into guest account */
- gboolean allow_guest;
-
- /* TRUE if greeter is to show the guest account */
- gboolean greeter_allow_guest;
-
- /* TRUE if stopping the display (waiting for dispaly server, greeter and session to stop) */
- gboolean stopping;
-
- /* TRUE if stopped */
- gboolean stopped;
-};
-
-/* PAM services to use */
-#define GREETER_SERVICE "lightdm-greeter"
-#define USER_SERVICE "lightdm"
-#define AUTOLOGIN_SERVICE "lightdm-autologin"
-
-G_DEFINE_TYPE (Display, display, G_TYPE_OBJECT);
-
-static void greeter_session_stopped_cb (Session *session, Display *display);
-static void user_session_stopped_cb (Session *session, Display *display);
-
-Display *
-display_new (DisplayServer *display_server)
-{
- Display *display;
-
- g_return_val_if_fail (display_server != NULL, NULL);
-
- display = g_object_new (DISPLAY_TYPE, NULL);
- display->priv->display_server = g_object_ref (display_server);
-
- return display;
-}
-
-DisplayServer *
-display_get_display_server (Display *display)
-{
- g_return_val_if_fail (display != NULL, NULL);
- return display->priv->display_server;
-}
-
-void
-display_set_share_display_server (Display *display, gboolean share_display_server)
-{
- g_return_if_fail (display != NULL);
- display->priv->share_display_server = share_display_server;
-}
-
-const gchar *
-display_get_username (Display *display)
-{
- g_return_val_if_fail (display != NULL, NULL);
-
- if (!display->priv->session || !display->priv->in_user_session)
- return NULL;
-
- return session_get_username (display->priv->session);
-}
-
-Session *
-display_get_session (Display *display)
-{
- g_return_val_if_fail (display != NULL, NULL);
- return display->priv->session;
-}
-
-void
-display_set_greeter_session (Display *display, const gchar *greeter_session)
-{
- g_return_if_fail (display != NULL);
- g_free (display->priv->greeter_session);
- display->priv->greeter_session = g_strdup (greeter_session);
-}
-
-void
-display_set_session_wrapper (Display *display, const gchar *session_wrapper)
-{
- g_return_if_fail (display != NULL);
- g_free (display->priv->session_wrapper);
- display->priv->session_wrapper = g_strdup (session_wrapper);
-}
-
-void
-display_set_greeter_wrapper (Display *display, const gchar *greeter_wrapper)
-{
- g_return_if_fail (display != NULL);
- g_free (display->priv->greeter_wrapper);
- display->priv->greeter_wrapper = g_strdup (greeter_wrapper);
-}
-
-void
-display_set_allow_guest (Display *display, gboolean allow_guest)
-{
- g_return_if_fail (display != NULL);
- display->priv->allow_guest = allow_guest;
-}
-
-void
-display_set_greeter_allow_guest (Display *display, gboolean greeter_allow_guest)
-{
- g_return_if_fail (display != NULL);
- display->priv->greeter_allow_guest = greeter_allow_guest;
-}
-
-void
-display_set_autologin_user (Display *display, const gchar *username, gboolean is_guest, gint timeout)
-{
- g_return_if_fail (display != NULL);
- g_free (display->priv->autologin_user);
- display->priv->autologin_user = g_strdup (username);
- display->priv->autologin_guest = is_guest;
- display->priv->autologin_timeout = timeout;
-}
-
-void
-display_set_select_user_hint (Display *display, const gchar *username, gboolean is_guest, gboolean attempt_login)
-{
- g_return_if_fail (display != NULL);
- g_free (display->priv->select_user_hint);
- display->priv->select_user_hint = g_strdup (username);
- display->priv->select_guest_hint = is_guest;
- display->priv->select_user_attempt_login = attempt_login;
-}
-
-void
-display_set_hide_users_hint (Display *display, gboolean hide_users)
-{
- g_return_if_fail (display != NULL);
- display->priv->greeter_hide_users = hide_users;
-}
-
-void
-display_set_show_manual_login_hint (Display *display, gboolean show_manual_login)
-{
- g_return_if_fail (display != NULL);
- display->priv->greeter_show_manual_login = show_manual_login;
-}
-
-void
-display_set_show_remote_login_hint (Display *display, gboolean show_remote_login)
-{
- g_return_if_fail (display != NULL);
- display->priv->greeter_show_remote_login = show_remote_login;
-}
-
-void
-display_set_lock_hint (Display *display, gboolean is_lock)
-{
- g_return_if_fail (display != NULL);
- display->priv->greeter_is_lock = is_lock;
-}
-
-void
-display_set_user_session (Display *display, SessionType type, const gchar *session_name)
-{
- g_return_if_fail (display != NULL);
- g_free (display->priv->user_session);
- display->priv->user_session_type = type;
- display->priv->user_session = g_strdup (session_name);
-}
-
-static void
-display_set_is_ready (Display *display)
-{
- if (display->priv->is_ready)
- return;
-
- display->priv->is_ready = TRUE;
- g_signal_emit (display, signals[READY], 0);
-}
-
-static gboolean
-switch_to_user (Display *display, User *user)
-{
- gboolean result;
- g_signal_emit (display, signals[SWITCH_TO_USER], 0, user, &result);
- return result;
-}
-
-static gboolean
-switch_to_guest (Display *display)
-{
- gboolean result;
- g_signal_emit (display, signals[SWITCH_TO_GUEST], 0, &result);
- return result;
-}
-
-static gchar *
-get_guest_username (Display *display)
-{
- gchar *username;
- g_signal_emit (display, signals[GET_GUEST_USERNAME], 0, &username);
- return username;
-}
-
-static Session *
-create_session (Display *display, const gchar *username)
-{
- Session *session;
-
- g_signal_emit (display, signals[CREATE_SESSION], 0, username, &session);
- if (!session)
- return NULL;
- session_set_display_server (session, display->priv->display_server);
-
- /* Connect using the session bus */
- if (getuid () != 0)
- {
- if (g_getenv ("DBUS_SESSION_BUS_ADDRESS"))
- session_set_env (session, "DBUS_SESSION_BUS_ADDRESS", g_getenv ("DBUS_SESSION_BUS_ADDRESS"));
- session_set_env (session, "LDM_BUS", "SESSION");
- if (g_getenv ("LD_PRELOAD"))
- session_set_env (session, "LD_PRELOAD", g_getenv ("LD_PRELOAD"));
- if (g_getenv ("LD_LIBRARY_PATH"))
- session_set_env (session, "LD_LIBRARY_PATH", g_getenv ("LD_LIBRARY_PATH"));
- if (g_getenv ("PATH"))
- session_set_env (session, "PATH", g_getenv ("PATH"));
- }
-
- /* Variables required for regression tests */
- if (g_getenv ("LIGHTDM_TEST_ROOT"))
- {
- session_set_env (session, "LIGHTDM_TEST_ROOT", g_getenv ("LIGHTDM_TEST_ROOT"));
- session_set_env (session, "DBUS_SYSTEM_BUS_ADDRESS", g_getenv ("DBUS_SYSTEM_BUS_ADDRESS"));
- session_set_env (session, "DBUS_SESSION_BUS_ADDRESS", g_getenv ("DBUS_SESSION_BUS_ADDRESS"));
- session_set_env (session, "LD_PRELOAD", g_getenv ("LD_PRELOAD"));
- session_set_env (session, "LD_LIBRARY_PATH", g_getenv ("LD_LIBRARY_PATH"));
- session_set_env (session, "GI_TYPELIB_PATH", g_getenv ("GI_TYPELIB_PATH"));
- }
-
- return session;
-}
-
-static void
-destroy_session (Display *display)
-{
- if (!display->priv->session)
- return;
-
- g_signal_handlers_disconnect_matched (display->priv->session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, display);
- session_stop (display->priv->session);
- g_object_unref (display->priv->session);
- display->priv->session = NULL;
-}
-
-static void
-greeter_authentication_complete_cb (Session *session, Display *display)
-{
- gboolean result = FALSE;
-
- if (display->priv->stopping)
- return;
-
- if (session_get_is_authenticated (session))
- {
- g_debug ("Greeter authorized");
- g_signal_emit (display, signals[START_GREETER], 0, &result);
- result = !result;
- }
- else
- g_debug ("Greeter failed authentication");
-
- if (!result)
- {
- g_debug ("Greeter failed to start");
- display_stop (display);
- }
-}
-
-static void
-greeter_connected_cb (Greeter *greeter, Display *display)
-{
- // FIXME: Should wait for greeter to signal completely ready if it supports it
- g_debug ("Greeter connected, display is ready");
- display_set_is_ready (display);
-}
-
-static Session *
-greeter_start_authentication_cb (Greeter *greeter, const gchar *username, Display *display)
-{
- return create_session (display, username);
-}
-
-static Display *
-create_display (Display *display, Session *session)
-{
- Display *d;
-
- g_signal_emit (display, signals[CREATE_DISPLAY], 0, session, &d);
-
- return d;
-}
-
-static gboolean
-greeter_start_session_cb (Greeter *greeter, SessionType type, const gchar *session_name, Display *display)
-{
- /* If no session requested, use the previous one */
- if (!session_name && !greeter_get_guest_authenticated (greeter))
- {
- User *user;
-
- user = session_get_user (greeter_get_authentication_session (greeter));
- type = SESSION_TYPE_LOCAL;
- session_name = user_get_xsession (user);
- }
-
- /* If a session was requested, override the default */
- if (session_name)
- {
- g_debug ("Using session %s", session_name);
- display_set_user_session (display, type, session_name);
- }
-
- /* Stop this display if that session already exists and can switch to it */
- if (greeter_get_guest_authenticated (greeter))
- {
- if (switch_to_guest (display))
- return TRUE;
-
- /* Set to login as guest */
- display_set_autologin_user (display, NULL, TRUE, 0);
- }
- else
- {
- if (switch_to_user (display, session_get_user (greeter_get_authentication_session (display->priv->greeter))))
- return TRUE;
- }
-
- /* If we can re-use this display server, then stop the greeter and start the session when it is done */
- if (display->priv->share_display_server)
- {
- g_debug ("Stopping greeter");
- session_stop (display->priv->session);
- }
- else
- create_display (display, greeter_get_authentication_session (greeter));
-
- return TRUE;
-}
-
-static gboolean
-start_greeter (Display *display)
-{
- gchar *greeter_user;
- gboolean result;
-
- destroy_session (display);
- display->priv->session = create_session (display, NULL);
- session_set_class (display->priv->session, XDG_SESSION_CLASS_GREETER);
- g_signal_connect (display->priv->session, "authentication-complete", G_CALLBACK (greeter_authentication_complete_cb), display);
-
- /* Make communication link to greeter that will run on this session */
- display->priv->greeter = greeter_new (display->priv->session, USER_SERVICE, AUTOLOGIN_SERVICE);
- g_signal_connect (G_OBJECT (display->priv->greeter), "connected", G_CALLBACK (greeter_connected_cb), display);
- g_signal_connect (G_OBJECT (display->priv->greeter), "start-authentication", G_CALLBACK (greeter_start_authentication_cb), display);
- g_signal_connect (G_OBJECT (display->priv->greeter), "start-session", G_CALLBACK (greeter_start_session_cb), display);
- if (display->priv->autologin_timeout)
- {
- gchar *value = g_strdup_printf ("%d", display->priv->autologin_timeout);
- greeter_set_hint (display->priv->greeter, "autologin-timeout", value);
- g_free (value);
- if (display->priv->autologin_user)
- greeter_set_hint (display->priv->greeter, "autologin-user", display->priv->autologin_user);
- else if (display->priv->autologin_guest)
- greeter_set_hint (display->priv->greeter, "autologin-guest", "true");
- }
- if (display->priv->select_user_hint)
- greeter_set_hint (display->priv->greeter, "select-user", display->priv->select_user_hint);
- else if (display->priv->select_guest_hint)
- greeter_set_hint (display->priv->greeter, "select-guest", "true");
- greeter_set_hint (display->priv->greeter, "default-session", display->priv->user_session);
- greeter_set_allow_guest (display->priv->greeter, display->priv->allow_guest);
- greeter_set_hint (display->priv->greeter, "has-guest-account", (display->priv->allow_guest && display->priv->greeter_allow_guest) ? "true" : "false");
- greeter_set_hint (display->priv->greeter, "hide-users", display->priv->greeter_hide_users ? "true" : "false");
- greeter_set_hint (display->priv->greeter, "show-manual-login", display->priv->greeter_show_manual_login ? "true" : "false");
- greeter_set_hint (display->priv->greeter, "show-remote-login", display->priv->greeter_show_remote_login ? "true" : "false");
- if (display->priv->greeter_is_lock)
- greeter_set_hint (display->priv->greeter, "lock-screen", "true");
-
- /* Run greeter as unprivileged user */
- if (getuid () != 0)
- {
- User *user;
- user = accounts_get_current_user ();
- greeter_user = g_strdup (user_get_name (user));
- g_object_unref (user);
- }
- else
- {
- greeter_user = config_get_string (config_get_instance (), "LightDM", "greeter-user");
- if (!greeter_user)
- {
- g_warning ("Greeter must not be run as root");
- display_stop (display);
- return FALSE;
- }
- }
-
- g_signal_connect_after (display->priv->session, "stopped", G_CALLBACK (greeter_session_stopped_cb), display);
- result = greeter_start (display->priv->greeter, GREETER_SERVICE, greeter_user);
- g_free (greeter_user);
-
- if (!result)
- display_stop (display);
-
- return result;
-}
-
-static void
-autologin_authentication_complete_cb (Session *session, Display *display)
-{
- gboolean result = FALSE;
-
- if (display->priv->stopping)
- return;
-
- if (session_get_is_authenticated (session))
- {
- const gchar *session_name;
-
- g_debug ("Autologin user %s authorized", session_get_username (session));
-
- session_name = user_get_xsession (session_get_user (session));
- if (session_name)
- {
- g_debug ("Autologin using session %s", session_name);
- display_set_user_session (display, SESSION_TYPE_LOCAL, session_name);
- }
-
- g_signal_emit (display, signals[START_SESSION], 0, &result);
- result = !result;
- }
- else
- g_debug ("Autologin failed authentication");
-
- if (!result)
- {
- if (display->priv->start_greeter_if_fail)
- start_greeter (display);
- else
- display_stop (display);
- }
-}
-
-static gboolean
-autologin (Display *display, const gchar *username, const gchar *service, gboolean start_greeter_if_fail, gboolean is_guest)
-{
- display->priv->start_greeter_if_fail = start_greeter_if_fail;
-
- display->priv->in_user_session = TRUE;
- destroy_session (display);
- display->priv->session = create_session (display, username);
- g_signal_connect (display->priv->session, "authentication-complete", G_CALLBACK (autologin_authentication_complete_cb), display);
- g_signal_connect_after (display->priv->session, "stopped", G_CALLBACK (user_session_stopped_cb), display);
- return session_start (display->priv->session, service, username, TRUE, FALSE, is_guest);
-}
-
-static gboolean
-autologin_guest (Display *display, const gchar *service, gboolean start_greeter_if_fail)
-{
- gchar *username;
- gboolean result;
-
- username = get_guest_username (display);
- if (!username)
- {
- g_debug ("Can't autologin guest, no guest account");
- return FALSE;
- }
-
- result = autologin (display, username, service, start_greeter_if_fail, TRUE);
- g_free (username);
-
- return result;
-}
-
-static gchar **
-get_session_command (const gchar *filename, const gchar *session_wrapper)
-{
- GKeyFile *session_desktop_file;
- gboolean result;
- int argc;
- gchar *command = NULL, **argv, *path;
- GError *error = NULL;
-
- /* Read the command from the .desktop file */
- session_desktop_file = g_key_file_new ();
- result = g_key_file_load_from_file (session_desktop_file, filename, G_KEY_FILE_NONE, &error);
- if (error)
- g_debug ("Failed to load session file %s: %s", filename, error->message);
- g_clear_error (&error);
- if (result)
- {
- command = g_key_file_get_string (session_desktop_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_EXEC, NULL);
- if (!command)
- g_debug ("No command in session file %s", filename);
- }
- g_key_file_free (session_desktop_file);
-
- if (!command)
- return NULL;
-
- /* If configured, run sessions through a wrapper */
- if (session_wrapper)
- {
- argv = g_malloc (sizeof (gchar *) * 3);
- path = g_find_program_in_path (session_wrapper);
- argv[0] = path ? path : g_strdup (session_wrapper);
- argv[1] = command;
- argv[2] = NULL;
- return argv;
- }
-
- /* Split command into an array listing and make command absolute */
- result = g_shell_parse_argv (command, &argc, &argv, &error);
- if (error)
- g_debug ("Invalid session command '%s': %s", command, error->message);
- g_clear_error (&error);
- g_free (command);
- if (!result)
- return NULL;
- path = g_find_program_in_path (argv[0]);
- if (path)
- {
- g_free (argv[0]);
- argv[0] = path;
- }
-
- return argv;
-}
-
-static void
-prepend_argv (gchar ***argv, const gchar *value)
-{
- gchar **old_argv, **new_argv;
- gint i;
-
- old_argv = *argv;
- new_argv = g_malloc (sizeof (gchar *) * (g_strv_length (*argv) + 2));
- new_argv[0] = g_strdup (value);
- for (i = 0; old_argv[i]; i++)
- new_argv[i + 1] = old_argv[i];
- new_argv[i + 1] = NULL;
-
- g_free (*argv);
- *argv = new_argv;
-}
-
-static void
-greeter_session_stopped_cb (Session *session, Display *display)
-{
- gboolean result = FALSE;
-
- g_debug ("Greeter quit");
-
- destroy_session (display);
-
- if (display->priv->stopping)
- {
- display_stop (display);
- return;
- }
-
- if (display_server_get_is_stopped (display->priv->display_server))
- return;
-
- /* Start the session for the authenticated user */
- if (greeter_get_start_session (display->priv->greeter))
- {
- /* If guest, then start a new autologin guest session (so can setup account) */
- if (greeter_get_guest_authenticated (display->priv->greeter))
- result = autologin_guest (display, AUTOLOGIN_SERVICE, FALSE);
- /* Otherwise, use the session the greeter has authenticated */
- else
- {
- destroy_session (display);
- display->priv->session = g_object_ref (greeter_get_authentication_session (display->priv->greeter));
- g_signal_connect_after (display->priv->session, "stopped", G_CALLBACK (user_session_stopped_cb), display);
- display->priv->in_user_session = TRUE;
- g_signal_emit (display, signals[START_SESSION], 0, &result);
- result = !result;
- }
- }
-
- /* Destroy the greeter */
- g_signal_handlers_disconnect_matched (display->priv->greeter, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, display);
- g_object_unref (display->priv->greeter);
- display->priv->greeter = NULL;
-
- if (!result)
- {
- g_debug ("Failed to start greeter");
- display_stop (display);
- }
-}
-
-static gboolean
-display_start_greeter (Display *display)
-{
- gchar *log_dir, *filename, *log_filename, *sessions_dir, *path, *wrapper;
- gchar **argv;
-
- /* Log the output of the greeter to a system location */
- log_dir = config_get_string (config_get_instance (), "LightDM", "log-directory");
- filename = g_strdup_printf ("%s-greeter.log", display_server_get_name (display->priv->display_server));
- log_filename = g_build_filename (log_dir, filename, NULL);
- g_free (log_dir);
- g_free (filename);
- g_debug ("Logging to %s", log_filename);
- session_set_log_file (display->priv->session, log_filename);
- g_free (log_filename);
-
- /* Load the greeter session information */
- sessions_dir = config_get_string (config_get_instance (), "LightDM", "xgreeters-directory");
- filename = g_strdup_printf ("%s.desktop", display->priv->greeter_session);
- path = g_build_filename (sessions_dir, filename, NULL);
- g_free (sessions_dir);
- g_free (filename);
- argv = get_session_command (path, NULL);
- g_free (path);
- if (!argv)
- return TRUE;
-
- if (display->priv->greeter_wrapper)
- {
- gchar *path;
- path = g_find_program_in_path (display->priv->greeter_wrapper);
- prepend_argv (&argv, path ? path : display->priv->greeter_wrapper);
- g_free (path);
- }
-
- session_run (display->priv->session, argv);
-
- return FALSE;
-}
-
-static void
-user_session_stopped_cb (Session *session, Display *display)
-{
- g_debug ("User session quit");
-
- destroy_session (display);
-
- /* This display has ended */
- display_stop (display);
-}
-
-static gboolean
-display_start_session (Display *display)
-{
- User *user;
- gchar *filename, *sessions_dir, *path;
- const gchar *language;
- gchar **argv;
- gboolean disable_guest_wrapper;
-
- user = session_get_user (display->priv->session);
-
- /* Find the command to run for the selected session */
- if (display->priv->user_session_type == SESSION_TYPE_LOCAL)
- {
- sessions_dir = config_get_string (config_get_instance (), "LightDM", "xsessions-directory");
-
- /* Store this session name so we automatically use it next time */
- user_set_xsession (user, display->priv->user_session);
- }
- else
- sessions_dir = config_get_string (config_get_instance (), "LightDM", "remote-sessions-directory");
- filename = g_strdup_printf ("%s.desktop", display->priv->user_session);
- path = g_build_filename (sessions_dir, filename, NULL);
- g_free (sessions_dir);
- g_free (filename);
- argv = get_session_command (path, display->priv->session_wrapper);
- g_free (path);
- if (!argv)
- return TRUE;
-
- /* Retrieve language setting */
- language = user_get_language (user);
- if (language != NULL && language != '\0')
- {
- session_set_env (display->priv->session, "LANG", language);
- session_set_env (display->priv->session, "GDM_LANG", language);
- }
-
- session_set_env (display->priv->session, "DESKTOP_SESSION", display->priv->user_session); // FIXME: Apparently deprecated?
- session_set_env (display->priv->session, "GDMSESSION", display->priv->user_session); // FIXME: Not cross-desktop
-
- /* Run a guest session through the wrapper covered by MAC */
- disable_guest_wrapper = config_get_boolean (config_get_instance (), "LightDM", "disable-guest-wrapper");
- if (display->priv->autologin_guest && !disable_guest_wrapper)
- {
- gchar *wrapper = g_build_filename (PKGLIBEXEC_DIR, "lightdm-guest-session-wrapper", NULL);
- g_debug ("Running guest session through wrapper: %s", wrapper);
- prepend_argv (&argv, wrapper);
- g_free (wrapper);
- }
-
- g_debug ("Starting session %s as user %s", display->priv->user_session, session_get_username (display->priv->session));
-
- session_run (display->priv->session, argv);
- g_strfreev (argv);
-
- // FIXME: Wait for session to indicate it is ready (maybe)
- display_set_is_ready (display);
-
- return FALSE;
-}
-
-static void
-display_server_stopped_cb (DisplayServer *server, Display *display)
-{
- g_debug ("Display server stopped");
-
- /* Stop this display, it will be restarted by the seat if necessary */
- display_stop (display);
-}
-
-static void
-display_server_ready_cb (DisplayServer *display_server, Display *display)
-{
- gboolean result = FALSE;
-
- g_signal_emit (display, signals[DISPLAY_SERVER_READY], 0, &result);
- if (!result)
- {
- display_stop (display);
- return;
- }
-
- /* If already have a session, run it */
- if (display->priv->session != NULL)
- {
- if (display_start_session (display))
- display_stop (display);
- return;
- }
-
- /* Don't run any sessions on local terminals */
- if (!display_server_get_start_local_sessions (display_server))
- return;
-
- /* Automatically start requested user session */
- result = FALSE;
- if (display->priv->autologin_timeout == 0 && display->priv->autologin_guest)
- {
- g_debug ("Automatically logging in as guest");
- result = autologin_guest (display, AUTOLOGIN_SERVICE, TRUE);
- }
- else if (display->priv->autologin_timeout == 0 && display->priv->autologin_user)
- {
- g_debug ("Automatically logging in user %s", display->priv->autologin_user);
- result = autologin (display, display->priv->autologin_user, AUTOLOGIN_SERVICE, TRUE, FALSE);
- }
- else if (display->priv->select_user_hint && display->priv->select_user_attempt_login)
- {
- g_debug ("Logging in user %s", display->priv->select_user_hint);
- result = autologin (display, display->priv->select_user_hint, USER_SERVICE, TRUE, FALSE);
- }
-
- /* If no session started, start a greeter */
- if (!result)
- {
- g_debug ("Starting greeter");
- result = start_greeter (display);
- }
-
- /* If nothing started, then the display can't work */
- if (!result)
- display_stop (display);
-}
-
-gboolean
-display_start (Display *display)
-{
- g_return_val_if_fail (display != NULL, FALSE);
-
- g_signal_connect (G_OBJECT (display->priv->display_server), "ready", G_CALLBACK (display_server_ready_cb), display);
- g_signal_connect (G_OBJECT (display->priv->display_server), "stopped", G_CALLBACK (display_server_stopped_cb), display);
-
- if (!display_server_start (display->priv->display_server))
- return FALSE;
-
- return TRUE;
-}
-
-gboolean
-display_start_with_session (Display *display, Session *session)
-{
- g_return_val_if_fail (display != NULL, FALSE);
- g_return_val_if_fail (session != NULL, FALSE);
-
- display->priv->session = g_object_ref (session);
- g_signal_connect_after (display->priv->session, "stopped", G_CALLBACK (user_session_stopped_cb), display);
- session_set_display_server (session, display->priv->display_server);
-
- return display_start (display);
-}
-
-gboolean
-display_get_is_ready (Display *display)
-{
- g_return_val_if_fail (display != NULL, FALSE);
-
- return display->priv->is_ready;
-}
-
-void
-display_lock (Display *display)
-{
- g_return_if_fail (display != NULL);
-
- if (!display->priv->session)
- return;
-
- g_debug ("Locking display");
-
- session_lock (display->priv->session);
-}
-
-void
-display_unlock (Display *display)
-{
- g_return_if_fail (display != NULL);
-
- if (!display->priv->session)
- return;
-
- g_debug ("Unlocking display");
-
- session_unlock (display->priv->session);
-}
-
-void
-display_stop (Display *display)
-{
- g_return_if_fail (display != NULL);
-
- if (display->priv->stopped)
- return;
-
- if (!display->priv->stopping)
- {
- g_debug ("Stopping display");
- display->priv->stopping = TRUE;
- }
-
- /* Stop the session first */
- if (display->priv->session)
- {
- session_stop (display->priv->session);
- return;
- }
-
- /* Stop the display server after that */
- if (!display_server_get_is_stopped (display->priv->display_server))
- {
- display_server_stop (display->priv->display_server);
- return;
- }
-
- display->priv->stopped = TRUE;
- g_signal_emit (display, signals[STOPPED], 0);
-}
-
-gboolean
-display_get_is_stopped (Display *display)
-{
- g_return_val_if_fail (display != NULL, FALSE);
- return display->priv->stopped;
-}
-
-static gboolean
-display_real_switch_to_user (Display *display, User *user)
-{
- return FALSE;
-}
-
-static gboolean
-display_real_switch_to_guest (Display *display)
-{
- return FALSE;
-}
-
-static gchar *
-display_real_get_guest_username (Display *display)
-{
- return NULL;
-}
-
-static Display *
-display_real_create_display (Display *display, Session *session)
-{
- return NULL;
-}
-
-static void
-display_init (Display *display)
-{
- display->priv = G_TYPE_INSTANCE_GET_PRIVATE (display, DISPLAY_TYPE, DisplayPrivate);
-}
-
-static void
-display_finalize (GObject *object)
-{
- Display *self;
-
- self = DISPLAY (object);
-
- g_signal_handlers_disconnect_matched (self->priv->display_server, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
- g_object_unref (self->priv->display_server);
- g_free (self->priv->greeter_session);
- if (self->priv->greeter)
- {
- g_signal_handlers_disconnect_matched (self->priv->greeter, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
- g_object_unref (self->priv->greeter);
- }
- g_free (self->priv->session_wrapper);
- g_free (self->priv->greeter_wrapper);
- if (self->priv->session)
- {
- g_signal_handlers_disconnect_matched (self->priv->session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
- g_object_unref (self->priv->session);
- }
- g_free (self->priv->autologin_user);
- g_free (self->priv->select_user_hint);
- g_free (self->priv->user_session);
-
- G_OBJECT_CLASS (display_parent_class)->finalize (object);
-}
-
-static void
-display_class_init (DisplayClass *klass)
-{
- GObjectClass *object_class = G_OBJECT_CLASS (klass);
-
- klass->switch_to_user = display_real_switch_to_user;
- klass->switch_to_guest = display_real_switch_to_guest;
- klass->get_guest_username = display_real_get_guest_username;
- klass->start_greeter = display_start_greeter;
- klass->start_session = display_start_session;
- klass->create_display = display_real_create_display;
- object_class->finalize = display_finalize;
-
- g_type_class_add_private (klass, sizeof (DisplayPrivate));
-
- signals[CREATE_SESSION] =
- g_signal_new ("create-session",
- G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (DisplayClass, create_session),
- NULL, NULL,
- ldm_marshal_OBJECT__STRING,
- SESSION_TYPE, 1, G_TYPE_STRING);
- signals[READY] =
- g_signal_new ("ready",
- G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (DisplayClass, ready),
- NULL, NULL,
- g_cclosure_marshal_VOID__VOID,
- G_TYPE_NONE, 0);
- signals[SWITCH_TO_USER] =
- g_signal_new ("switch-to-user",
- G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (DisplayClass, switch_to_user),
- g_signal_accumulator_true_handled,
- NULL,
- ldm_marshal_BOOLEAN__OBJECT,
- G_TYPE_BOOLEAN, 1, USER_TYPE);
- signals[SWITCH_TO_GUEST] =
- g_signal_new ("switch-to-guest",
- G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (DisplayClass, switch_to_guest),
- g_signal_accumulator_true_handled,
- NULL,
- ldm_marshal_BOOLEAN__VOID,
- G_TYPE_BOOLEAN, 0);
- signals[GET_GUEST_USERNAME] =
- g_signal_new ("get-guest-username",
- G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (DisplayClass, get_guest_username),
- g_signal_accumulator_first_wins,
- NULL,
- ldm_marshal_STRING__VOID,
- G_TYPE_STRING, 0);
- signals[DISPLAY_SERVER_READY] =
- g_signal_new ("display-server-ready",
- G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (DisplayClass, display_server_ready),
- NULL, NULL,
- ldm_marshal_BOOLEAN__VOID,
- G_TYPE_BOOLEAN, 0);
- signals[START_GREETER] =
- g_signal_new ("start-greeter",
- G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (DisplayClass, start_greeter),
- g_signal_accumulator_true_handled, NULL,
- ldm_marshal_BOOLEAN__VOID,
- G_TYPE_BOOLEAN, 0);
- signals[START_SESSION] =
- g_signal_new ("start-session",
- G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (DisplayClass, start_session),
- g_signal_accumulator_true_handled, NULL,
- ldm_marshal_BOOLEAN__VOID,
- G_TYPE_BOOLEAN, 0);
- signals[CREATE_DISPLAY] =
- g_signal_new ("create-display",
- G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (DisplayClass, create_display),
- NULL, NULL,
- ldm_marshal_OBJECT__OBJECT,
- DISPLAY_TYPE, 1, SESSION_TYPE);
- signals[STOPPED] =
- g_signal_new ("stopped",
- G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (DisplayClass, stopped),
- NULL, NULL,
- g_cclosure_marshal_VOID__VOID,
- G_TYPE_NONE, 0);
-}
projects / sojka / lightdm.git / commitdiff