summaryrefslogtreecommitdiff
path: root/egg/eggsmclient-xsmp.c
diff options
context:
space:
mode:
Diffstat (limited to 'egg/eggsmclient-xsmp.c')
-rw-r--r--egg/eggsmclient-xsmp.c1364
1 files changed, 0 insertions, 1364 deletions
diff --git a/egg/eggsmclient-xsmp.c b/egg/eggsmclient-xsmp.c
deleted file mode 100644
index 75bb807..0000000
--- a/egg/eggsmclient-xsmp.c
+++ /dev/null
@@ -1,1364 +0,0 @@
-/*
- * Copyright (C) 2007 Novell, Inc.
- *
- * Inspired by various other pieces of code including GsmClient (C)
- * 2001 Havoc Pennington, MateClient (C) 1998 Carsten Schaar, and twm
- * session code (C) 1998 The Open Group.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-
-#include "config.h"
-
-#include "eggsmclient.h"
-#include "eggsmclient-private.h"
-
-#include "eggdesktopfile.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <X11/SM/SMlib.h>
-
-#include <gdk/gdk.h>
-#include <gdk/gdkx.h>
-
-#define EGG_TYPE_SM_CLIENT_XSMP (egg_sm_client_xsmp_get_type ())
-#define EGG_SM_CLIENT_XSMP(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), EGG_TYPE_SM_CLIENT_XSMP, EggSMClientXSMP))
-#define EGG_SM_CLIENT_XSMP_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), EGG_TYPE_SM_CLIENT_XSMP, EggSMClientXSMPClass))
-#define EGG_IS_SM_CLIENT_XSMP(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), EGG_TYPE_SM_CLIENT_XSMP))
-#define EGG_IS_SM_CLIENT_XSMP_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EGG_TYPE_SM_CLIENT_XSMP))
-#define EGG_SM_CLIENT_XSMP_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), EGG_TYPE_SM_CLIENT_XSMP, EggSMClientXSMPClass))
-
-typedef struct _EggSMClientXSMP EggSMClientXSMP;
-typedef struct _EggSMClientXSMPClass EggSMClientXSMPClass;
-
-/* These mostly correspond to the similarly-named states in section
- * 9.1 of the XSMP spec. Some of the states there aren't represented
- * here, because we don't need them. SHUTDOWN_CANCELLED is slightly
- * different from the spec; we use it when the client is IDLE after a
- * ShutdownCancelled message, but the application is still interacting
- * and doesn't know the shutdown has been cancelled yet.
- */
-typedef enum {
- XSMP_STATE_IDLE,
- XSMP_STATE_SAVE_YOURSELF,
- XSMP_STATE_INTERACT_REQUEST,
- XSMP_STATE_INTERACT,
- XSMP_STATE_SAVE_YOURSELF_DONE,
- XSMP_STATE_SHUTDOWN_CANCELLED,
- XSMP_STATE_CONNECTION_CLOSED
-} EggSMClientXSMPState;
-
-static const char* state_names[] = {
- "idle",
- "save-yourself",
- "interact-request",
- "interact",
- "save-yourself-done",
- "shutdown-cancelled",
- "connection-closed"
-};
-
-#define EGG_SM_CLIENT_XSMP_STATE(xsmp) (state_names[(xsmp)->state])
-
-struct _EggSMClientXSMP
-{
- EggSMClient parent;
-
- SmcConn connection;
- char *client_id;
-
- EggSMClientXSMPState state;
- char **restart_command;
- gboolean set_restart_command;
- int restart_style;
-
- guint idle;
-
- /* Current SaveYourself state */
- guint expecting_initial_save_yourself : 1;
- guint need_save_state : 1;
- guint need_quit_requested : 1;
- guint interact_errors : 1;
- guint shutting_down : 1;
-
- /* Todo list */
- guint waiting_to_set_initial_properties : 1;
- guint waiting_to_emit_quit : 1;
- guint waiting_to_emit_quit_cancelled : 1;
- guint waiting_to_save_myself : 1;
-
-};
-
-struct _EggSMClientXSMPClass
-{
- EggSMClientClass parent_class;
-
-};
-
-static void sm_client_xsmp_startup (EggSMClient *client,
- const char *client_id);
-static void sm_client_xsmp_set_restart_command (EggSMClient *client,
- int argc,
- const char **argv);
-static void sm_client_xsmp_will_quit (EggSMClient *client,
- gboolean will_quit);
-static gboolean sm_client_xsmp_end_session (EggSMClient *client,
- EggSMClientEndStyle style,
- gboolean request_confirmation);
-
-static void xsmp_save_yourself (SmcConn smc_conn,
- SmPointer client_data,
- int save_style,
- Bool shutdown,
- int interact_style,
- Bool fast);
-static void xsmp_die (SmcConn smc_conn,
- SmPointer client_data);
-static void xsmp_save_complete (SmcConn smc_conn,
- SmPointer client_data);
-static void xsmp_shutdown_cancelled (SmcConn smc_conn,
- SmPointer client_data);
-static void xsmp_interact (SmcConn smc_conn,
- SmPointer client_data);
-
-static SmProp *array_prop (const char *name,
- ...);
-static SmProp *ptrarray_prop (const char *name,
- GPtrArray *values);
-static SmProp *string_prop (const char *name,
- const char *value);
-static SmProp *card8_prop (const char *name,
- unsigned char value);
-
-static void set_properties (EggSMClientXSMP *xsmp, ...);
-static void delete_properties (EggSMClientXSMP *xsmp, ...);
-
-static GPtrArray *generate_command (char **restart_command,
- const char *client_id,
- const char *state_file);
-
-static void save_state (EggSMClientXSMP *xsmp);
-static void do_save_yourself (EggSMClientXSMP *xsmp);
-static void update_pending_events (EggSMClientXSMP *xsmp);
-
-static void ice_init (void);
-static gboolean process_ice_messages (IceConn ice_conn);
-static void smc_error_handler (SmcConn smc_conn,
- Bool swap,
- int offending_minor_opcode,
- unsigned long offending_sequence,
- int error_class,
- int severity,
- SmPointer values);
-
-G_DEFINE_TYPE (EggSMClientXSMP, egg_sm_client_xsmp, EGG_TYPE_SM_CLIENT)
-
-static void
-egg_sm_client_xsmp_init (EggSMClientXSMP *xsmp)
-{
- xsmp->state = XSMP_STATE_CONNECTION_CLOSED;
- xsmp->connection = NULL;
- xsmp->restart_style = SmRestartIfRunning;
-}
-
-static void
-egg_sm_client_xsmp_class_init (EggSMClientXSMPClass *klass)
-{
- EggSMClientClass *sm_client_class = EGG_SM_CLIENT_CLASS (klass);
-
- sm_client_class->startup = sm_client_xsmp_startup;
- sm_client_class->set_restart_command = sm_client_xsmp_set_restart_command;
- sm_client_class->will_quit = sm_client_xsmp_will_quit;
- sm_client_class->end_session = sm_client_xsmp_end_session;
-}
-
-EggSMClient *
-egg_sm_client_xsmp_new (void)
-{
- if (!g_getenv ("SESSION_MANAGER"))
- return NULL;
-
- return g_object_new (EGG_TYPE_SM_CLIENT_XSMP, NULL);
-}
-
-static gboolean
-sm_client_xsmp_set_initial_properties (gpointer user_data)
-{
- EggSMClientXSMP *xsmp = user_data;
- EggDesktopFile *desktop_file;
- GPtrArray *clone, *restart;
- char pid_str[64];
-
- if (xsmp->idle)
- {
- g_source_remove (xsmp->idle);
- xsmp->idle = 0;
- }
- xsmp->waiting_to_set_initial_properties = FALSE;
-
- if (egg_sm_client_get_mode () == EGG_SM_CLIENT_MODE_NO_RESTART)
- xsmp->restart_style = SmRestartNever;
-
- /* Parse info out of desktop file */
- desktop_file = egg_get_desktop_file ();
- if (desktop_file)
- {
- GError *err = NULL;
- char *cmdline, **argv;
- int argc;
-
- if (xsmp->restart_style == SmRestartIfRunning)
- {
- if (egg_desktop_file_get_boolean (desktop_file,
- "X-MATE-AutoRestart", NULL))
- xsmp->restart_style = SmRestartImmediately;
- }
-
- if (!xsmp->set_restart_command)
- {
- cmdline = egg_desktop_file_parse_exec (desktop_file, NULL, &err);
- if (cmdline && g_shell_parse_argv (cmdline, &argc, &argv, &err))
- {
- egg_sm_client_set_restart_command (EGG_SM_CLIENT (xsmp),
- argc, (const char **)argv);
- g_strfreev (argv);
- }
- else
- {
- g_warning ("Could not parse Exec line in desktop file: %s",
- err->message);
- g_error_free (err);
- }
- g_free (cmdline);
- }
- }
-
- if (!xsmp->set_restart_command)
- xsmp->restart_command = g_strsplit (g_get_prgname (), " ", -1);
-
- clone = generate_command (xsmp->restart_command, NULL, NULL);
- restart = generate_command (xsmp->restart_command, xsmp->client_id, NULL);
-
- g_debug ("Setting initial properties");
-
- /* Program, CloneCommand, RestartCommand, and UserID are required.
- * ProcessID isn't required, but the SM may be able to do something
- * useful with it.
- */
- g_snprintf (pid_str, sizeof (pid_str), "%lu", (gulong) getpid ());
- set_properties (xsmp,
- string_prop (SmProgram, g_get_prgname ()),
- ptrarray_prop (SmCloneCommand, clone),
- ptrarray_prop (SmRestartCommand, restart),
- string_prop (SmUserID, g_get_user_name ()),
- string_prop (SmProcessID, pid_str),
- card8_prop (SmRestartStyleHint, xsmp->restart_style),
- NULL);
- g_ptr_array_free (clone, TRUE);
- g_ptr_array_free (restart, TRUE);
-
- if (desktop_file)
- {
- set_properties (xsmp,
- string_prop ("_GSM_DesktopFile", egg_desktop_file_get_source (desktop_file)),
- NULL);
- }
-
- update_pending_events (xsmp);
- return FALSE;
-}
-
-/* This gets called from two different places: xsmp_die() (when the
- * server asks us to disconnect) and process_ice_messages() (when the
- * server disconnects unexpectedly).
- */
-static void
-sm_client_xsmp_disconnect (EggSMClientXSMP *xsmp)
-{
- SmcConn connection;
-
- if (!xsmp->connection)
- return;
-
- g_debug ("Disconnecting");
-
- connection = xsmp->connection;
- xsmp->connection = NULL;
- SmcCloseConnection (connection, 0, NULL);
- xsmp->state = XSMP_STATE_CONNECTION_CLOSED;
-
- xsmp->waiting_to_save_myself = FALSE;
- update_pending_events (xsmp);
-}
-
-static void
-sm_client_xsmp_startup (EggSMClient *client,
- const char *client_id)
-{
- EggSMClientXSMP *xsmp = (EggSMClientXSMP *)client;
- SmcCallbacks callbacks;
- char *ret_client_id;
- char error_string_ret[256];
-
- xsmp->client_id = g_strdup (client_id);
-
- ice_init ();
- SmcSetErrorHandler (smc_error_handler);
-
- callbacks.save_yourself.callback = xsmp_save_yourself;
- callbacks.die.callback = xsmp_die;
- callbacks.save_complete.callback = xsmp_save_complete;
- callbacks.shutdown_cancelled.callback = xsmp_shutdown_cancelled;
-
- callbacks.save_yourself.client_data = xsmp;
- callbacks.die.client_data = xsmp;
- callbacks.save_complete.client_data = xsmp;
- callbacks.shutdown_cancelled.client_data = xsmp;
-
- client_id = NULL;
- error_string_ret[0] = '\0';
- xsmp->connection =
- SmcOpenConnection (NULL, xsmp, SmProtoMajor, SmProtoMinor,
- SmcSaveYourselfProcMask | SmcDieProcMask |
- SmcSaveCompleteProcMask |
- SmcShutdownCancelledProcMask,
- &callbacks,
- xsmp->client_id, &ret_client_id,
- sizeof (error_string_ret), error_string_ret);
-
- if (!xsmp->connection)
- {
- g_warning ("Failed to connect to the session manager: %s\n",
- error_string_ret[0] ?
- error_string_ret : "no error message given");
- xsmp->state = XSMP_STATE_CONNECTION_CLOSED;
- return;
- }
-
- /* We expect a pointless initial SaveYourself if either (a) we
- * didn't have an initial client ID, or (b) we DID have an initial
- * client ID, but the server rejected it and gave us a new one.
- */
- if (!xsmp->client_id ||
- (ret_client_id && strcmp (xsmp->client_id, ret_client_id) != 0))
- xsmp->expecting_initial_save_yourself = TRUE;
-
- if (ret_client_id)
- {
- g_free (xsmp->client_id);
- xsmp->client_id = g_strdup (ret_client_id);
- free (ret_client_id);
-
- gdk_x11_set_sm_client_id (xsmp->client_id);
-
- g_debug ("Got client ID \"%s\"", xsmp->client_id);
- }
-
- xsmp->state = XSMP_STATE_IDLE;
-
- /* Do not set the initial properties until we reach the main loop,
- * so that the application has a chance to call
- * egg_set_desktop_file(). (This may also help the session manager
- * have a better idea of when the application is fully up and
- * running.)
- */
- xsmp->waiting_to_set_initial_properties = TRUE;
- xsmp->idle = g_idle_add (sm_client_xsmp_set_initial_properties, client);
-}
-
-static void
-sm_client_xsmp_set_restart_command (EggSMClient *client,
- int argc,
- const char **argv)
-{
- EggSMClientXSMP *xsmp = (EggSMClientXSMP *)client;
- int i;
-
- g_strfreev (xsmp->restart_command);
-
- xsmp->restart_command = g_new (char *, argc + 1);
- for (i = 0; i < argc; i++)
- xsmp->restart_command[i] = g_strdup (argv[i]);
- xsmp->restart_command[i] = NULL;
-
- xsmp->set_restart_command = TRUE;
-}
-
-static void
-sm_client_xsmp_will_quit (EggSMClient *client,
- gboolean will_quit)
-{
- EggSMClientXSMP *xsmp = (EggSMClientXSMP *)client;
-
- if (xsmp->state == XSMP_STATE_CONNECTION_CLOSED)
- {
- /* The session manager has already exited! Schedule a quit
- * signal.
- */
- xsmp->waiting_to_emit_quit = TRUE;
- update_pending_events (xsmp);
- return;
- }
- else if (xsmp->state == XSMP_STATE_SHUTDOWN_CANCELLED)
- {
- /* We received a ShutdownCancelled message while the application
- * was interacting; Schedule a quit_cancelled signal.
- */
- xsmp->waiting_to_emit_quit_cancelled = TRUE;
- update_pending_events (xsmp);
- return;
- }
-
- g_return_if_fail (xsmp->state == XSMP_STATE_INTERACT);
-
- g_debug ("Sending InteractDone(%s)", will_quit ? "False" : "True");
- SmcInteractDone (xsmp->connection, !will_quit);
-
- if (will_quit && xsmp->need_save_state)
- save_state (xsmp);
-
- g_debug ("Sending SaveYourselfDone(%s)", will_quit ? "True" : "False");
- SmcSaveYourselfDone (xsmp->connection, will_quit);
- xsmp->state = XSMP_STATE_SAVE_YOURSELF_DONE;
-}
-
-static gboolean
-sm_client_xsmp_end_session (EggSMClient *client,
- EggSMClientEndStyle style,
- gboolean request_confirmation)
-{
- EggSMClientXSMP *xsmp = (EggSMClientXSMP *)client;
- int save_type;
-
- /* To end the session via XSMP, we have to send a
- * SaveYourselfRequest. We aren't allowed to do that if anything
- * else is going on, but we don't want to expose this fact to the
- * application. So we do our best to patch things up here...
- *
- * In the worst case, this method might block for some length of
- * time in process_ice_messages, but the only time that code path is
- * honestly likely to get hit is if the application tries to end the
- * session as the very first thing it does, in which case it
- * probably won't actually block anyway. It's not worth gunking up
- * the API to try to deal nicely with the other 0.01% of cases where
- * this happens.
- */
-
- while (xsmp->state != XSMP_STATE_IDLE ||
- xsmp->expecting_initial_save_yourself)
- {
- /* If we're already shutting down, we don't need to do anything. */
- if (xsmp->shutting_down)
- return TRUE;
-
- switch (xsmp->state)
- {
- case XSMP_STATE_CONNECTION_CLOSED:
- return FALSE;
-
- case XSMP_STATE_SAVE_YOURSELF:
- /* Trying to log out from the save_state callback? Whatever.
- * Abort the save_state.
- */
- SmcSaveYourselfDone (xsmp->connection, FALSE);
- xsmp->state = XSMP_STATE_SAVE_YOURSELF_DONE;
- break;
-
- case XSMP_STATE_INTERACT_REQUEST:
- case XSMP_STATE_INTERACT:
- case XSMP_STATE_SHUTDOWN_CANCELLED:
- /* Already in a shutdown-related state, just ignore
- * the new shutdown request...
- */
- return TRUE;
-
- case XSMP_STATE_IDLE:
- if (xsmp->waiting_to_set_initial_properties)
- sm_client_xsmp_set_initial_properties (xsmp);
-
- if (!xsmp->expecting_initial_save_yourself)
- break;
- /* else fall through */
-
- case XSMP_STATE_SAVE_YOURSELF_DONE:
- /* We need to wait for some response from the server.*/
- process_ice_messages (SmcGetIceConnection (xsmp->connection));
- break;
-
- default:
- /* Hm... shouldn't happen */
- return FALSE;
- }
- }
-
- /* xfce4-session will do the wrong thing if we pass SmSaveGlobal and
- * the user chooses to save the session. But mate-session will do
- * the wrong thing if we pass SmSaveBoth and the user chooses NOT to
- * save the session... Sigh.
- */
- if (!strcmp (SmcVendor (xsmp->connection), "xfce4-session"))
- save_type = SmSaveBoth;
- else
- save_type = SmSaveGlobal;
-
- g_debug ("Sending SaveYourselfRequest(SmSaveGlobal, Shutdown, SmInteractStyleAny, %sFast)", request_confirmation ? "!" : "");
- SmcRequestSaveYourself (xsmp->connection,
- save_type,
- True, /* shutdown */
- SmInteractStyleAny,
- !request_confirmation, /* fast */
- True /* global */);
- return TRUE;
-}
-
-static gboolean
-idle_do_pending_events (gpointer data)
-{
- EggSMClientXSMP *xsmp = data;
- EggSMClient *client = data;
-
- xsmp->idle = 0;
-
- if (xsmp->waiting_to_emit_quit)
- {
- xsmp->waiting_to_emit_quit = FALSE;
- egg_sm_client_quit (client);
- goto out;
- }
-
- if (xsmp->waiting_to_emit_quit_cancelled)
- {
- xsmp->waiting_to_emit_quit_cancelled = FALSE;
- egg_sm_client_quit_cancelled (client);
- xsmp->state = XSMP_STATE_IDLE;
- }
-
- if (xsmp->waiting_to_save_myself)
- {
- xsmp->waiting_to_save_myself = FALSE;
- do_save_yourself (xsmp);
- }
-
- out:
- return FALSE;
-}
-
-static void
-update_pending_events (EggSMClientXSMP *xsmp)
-{
- gboolean want_idle =
- xsmp->waiting_to_emit_quit ||
- xsmp->waiting_to_emit_quit_cancelled ||
- xsmp->waiting_to_save_myself;
-
- if (want_idle)
- {
- if (xsmp->idle == 0)
- xsmp->idle = g_idle_add (idle_do_pending_events, xsmp);
- }
- else
- {
- if (xsmp->idle != 0)
- g_source_remove (xsmp->idle);
- xsmp->idle = 0;
- }
-}
-
-static void
-fix_broken_state (EggSMClientXSMP *xsmp, const char *message,
- gboolean send_interact_done,
- gboolean send_save_yourself_done)
-{
- g_warning ("Received XSMP %s message in state %s: client or server error",
- message, EGG_SM_CLIENT_XSMP_STATE (xsmp));
-
- /* Forget any pending SaveYourself plans we had */
- xsmp->waiting_to_save_myself = FALSE;
- update_pending_events (xsmp);
-
- if (send_interact_done)
- SmcInteractDone (xsmp->connection, False);
- if (send_save_yourself_done)
- SmcSaveYourselfDone (xsmp->connection, True);
-
- xsmp->state = send_save_yourself_done ? XSMP_STATE_SAVE_YOURSELF_DONE : XSMP_STATE_IDLE;
-}
-
-/* SM callbacks */
-
-static void
-xsmp_save_yourself (SmcConn smc_conn,
- SmPointer client_data,
- int save_type,
- Bool shutdown,
- int interact_style,
- Bool fast)
-{
- EggSMClientXSMP *xsmp = client_data;
- gboolean wants_quit_requested;
-
- g_debug ("Received SaveYourself(%s, %s, %s, %s) in state %s",
- save_type == SmSaveLocal ? "SmSaveLocal" :
- save_type == SmSaveGlobal ? "SmSaveGlobal" : "SmSaveBoth",
- shutdown ? "Shutdown" : "!Shutdown",
- interact_style == SmInteractStyleAny ? "SmInteractStyleAny" :
- interact_style == SmInteractStyleErrors ? "SmInteractStyleErrors" :
- "SmInteractStyleNone", fast ? "Fast" : "!Fast",
- EGG_SM_CLIENT_XSMP_STATE (xsmp));
-
- if (xsmp->state != XSMP_STATE_IDLE &&
- xsmp->state != XSMP_STATE_SHUTDOWN_CANCELLED)
- {
- fix_broken_state (xsmp, "SaveYourself", FALSE, TRUE);
- return;
- }
-
- if (xsmp->waiting_to_set_initial_properties)
- sm_client_xsmp_set_initial_properties (xsmp);
-
- /* If this is the initial SaveYourself, ignore it; we've already set
- * properties and there's no reason to actually save state too.
- */
- if (xsmp->expecting_initial_save_yourself)
- {
- xsmp->expecting_initial_save_yourself = FALSE;
-
- if (save_type == SmSaveLocal &&
- interact_style == SmInteractStyleNone &&
- !shutdown && !fast)
- {
- g_debug ("Sending SaveYourselfDone(True) for initial SaveYourself");
- SmcSaveYourselfDone (xsmp->connection, True);
- /* As explained in the comment at the end of
- * do_save_yourself(), SAVE_YOURSELF_DONE is the correct
- * state here, not IDLE.
- */
- xsmp->state = XSMP_STATE_SAVE_YOURSELF_DONE;
- return;
- }
- else
- g_warning ("First SaveYourself was not the expected one!");
- }
-
- /* Even ignoring the "fast" flag completely, there are still 18
- * different combinations of save_type, shutdown and interact_style.
- * We interpret them as follows:
- *
- * Type Shutdown Interact Interpretation
- * G F A/E/N do nothing (1)
- * G T N do nothing (1)*
- * G T A/E quit_requested (2)
- * L/B F A/E/N save_state (3)
- * L/B T N save_state (3)*
- * L/B T A/E quit_requested, then save_state (4)
- *
- * 1. Do nothing, because the SM asked us to do something
- * uninteresting (save open files, but then don't quit
- * afterward) or rude (save open files without asking the user
- * for confirmation).
- *
- * 2. Request interaction and then emit ::quit_requested. This
- * perhaps isn't quite correct for the SmInteractStyleErrors
- * case, but we don't care.
- *
- * 3. Emit ::save_state. The SmSaveBoth SaveYourselfs in these
- * rows essentially get demoted to SmSaveLocal, because their
- * Global halves correspond to "do nothing".
- *
- * 4. Request interaction, emit ::quit_requested, and then emit
- * ::save_state after interacting. This is the SmSaveBoth
- * equivalent of #2, but we also promote SmSaveLocal shutdown
- * SaveYourselfs to SmSaveBoth here, because we want to give
- * the user a chance to save open files before quitting.
- *
- * (* It would be nice if we could do something useful when the
- * session manager sends a SaveYourself with shutdown True and
- * SmInteractStyleNone. But we can't, so we just pretend it didn't
- * even tell us it was shutting down. The docs for ::quit mention
- * that it might not always be preceded by ::quit_requested.)
- */
-
- /* As an optimization, we don't actually request interaction and
- * emit ::quit_requested if the application isn't listening to the
- * signal.
- */
- wants_quit_requested = g_signal_has_handler_pending (xsmp, g_signal_lookup ("quit_requested", EGG_TYPE_SM_CLIENT), 0, FALSE);
-
- xsmp->need_save_state = (save_type != SmSaveGlobal);
- xsmp->need_quit_requested = (shutdown && wants_quit_requested &&
- interact_style != SmInteractStyleNone);
- xsmp->interact_errors = (interact_style == SmInteractStyleErrors);
-
- xsmp->shutting_down = shutdown;
-
- do_save_yourself (xsmp);
-}
-
-static void
-do_save_yourself (EggSMClientXSMP *xsmp)
-{
- if (xsmp->state == XSMP_STATE_SHUTDOWN_CANCELLED)
- {
- /* The SM cancelled a previous SaveYourself, but we haven't yet
- * had a chance to tell the application, so we can't start
- * processing this SaveYourself yet.
- */
- xsmp->waiting_to_save_myself = TRUE;
- update_pending_events (xsmp);
- return;
- }
-
- if (xsmp->need_quit_requested)
- {
- xsmp->state = XSMP_STATE_INTERACT_REQUEST;
-
- g_debug ("Sending InteractRequest(%s)",
- xsmp->interact_errors ? "Error" : "Normal");
- SmcInteractRequest (xsmp->connection,
- xsmp->interact_errors ? SmDialogError : SmDialogNormal,
- xsmp_interact,
- xsmp);
- return;
- }
-
- if (xsmp->need_save_state)
- {
- save_state (xsmp);
-
- /* Though unlikely, the client could have been disconnected
- * while the application was saving its state.
- */
- if (!xsmp->connection)
- return;
- }
-
- g_debug ("Sending SaveYourselfDone(True)");
- SmcSaveYourselfDone (xsmp->connection, True);
-
- /* The client state diagram in the XSMP spec says that after a
- * non-shutdown SaveYourself, we go directly back to "idle". But
- * everything else in both the XSMP spec and the libSM docs
- * disagrees.
- */
- xsmp->state = XSMP_STATE_SAVE_YOURSELF_DONE;
-}
-
-static void
-save_state (EggSMClientXSMP *xsmp)
-{
- GKeyFile *state_file;
- char *state_file_path, *data;
- EggDesktopFile *desktop_file;
- GPtrArray *restart;
- int offset, fd;
-
- /* We set xsmp->state before emitting save_state, but our caller is
- * responsible for setting it back afterward.
- */
- xsmp->state = XSMP_STATE_SAVE_YOURSELF;
-
- state_file = egg_sm_client_save_state ((EggSMClient *)xsmp);
- if (!state_file)
- {
- restart = generate_command (xsmp->restart_command, xsmp->client_id, NULL);
- set_properties (xsmp,
- ptrarray_prop (SmRestartCommand, restart),
- NULL);
- g_ptr_array_free (restart, TRUE);
- delete_properties (xsmp, SmDiscardCommand, NULL);
- return;
- }
-
- desktop_file = egg_get_desktop_file ();
- if (desktop_file)
- {
- GKeyFile *merged_file;
- char *desktop_file_path;
-
- merged_file = g_key_file_new ();
- desktop_file_path =
- g_filename_from_uri (egg_desktop_file_get_source (desktop_file),
- NULL, NULL);
- if (desktop_file_path &&
- g_key_file_load_from_file (merged_file, desktop_file_path,
- G_KEY_FILE_KEEP_COMMENTS |
- G_KEY_FILE_KEEP_TRANSLATIONS, NULL))
- {
- guint g, k, i;
- char **groups, **keys, *value, *exec;
-
- groups = g_key_file_get_groups (state_file, NULL);
- for (g = 0; groups[g]; g++)
- {
- keys = g_key_file_get_keys (state_file, groups[g], NULL, NULL);
- for (k = 0; keys[k]; k++)
- {
- value = g_key_file_get_value (state_file, groups[g],
- keys[k], NULL);
- if (value)
- {
- g_key_file_set_value (merged_file, groups[g],
- keys[k], value);
- g_free (value);
- }
- }
- g_strfreev (keys);
- }
- g_strfreev (groups);
-
- g_key_file_free (state_file);
- state_file = merged_file;
-
- /* Update Exec key using "--sm-client-state-file %k" */
- restart = generate_command (xsmp->restart_command,
- NULL, "%k");
- for (i = 0; i < restart->len; i++)
- restart->pdata[i] = g_shell_quote (restart->pdata[i]);
- g_ptr_array_add (restart, NULL);
- exec = g_strjoinv (" ", (char **)restart->pdata);
- g_strfreev ((char **)restart->pdata);
- g_ptr_array_free (restart, FALSE);
-
- g_key_file_set_string (state_file, EGG_DESKTOP_FILE_GROUP,
- EGG_DESKTOP_FILE_KEY_EXEC,
- exec);
- g_free (exec);
- }
- else
- desktop_file = NULL;
-
- g_free (desktop_file_path);
- }
-
- /* Now write state_file to disk. (We can't use mktemp(), because
- * that requires the filename to end with "XXXXXX", and we want
- * it to end with ".desktop".)
- */
-
- data = g_key_file_to_data (state_file, NULL, NULL);
- g_key_file_free (state_file);
-
- offset = 0;
- while (1)
- {
- state_file_path = g_strdup_printf ("%s%csession-state%c%s-%ld.%s",
- g_get_user_config_dir (),
- G_DIR_SEPARATOR, G_DIR_SEPARATOR,
- g_get_prgname (),
- (long)time (NULL) + offset,
- desktop_file ? "desktop" : "state");
-
- fd = open (state_file_path, O_WRONLY | O_CREAT | O_EXCL, 0644);
- if (fd == -1)
- {
- if (errno == EEXIST)
- {
- offset++;
- g_free (state_file_path);
- continue;
- }
- else if (errno == ENOTDIR || errno == ENOENT)
- {
- char *sep = strrchr (state_file_path, G_DIR_SEPARATOR);
-
- *sep = '\0';
- if (g_mkdir_with_parents (state_file_path, 0755) != 0)
- {
- g_warning ("Could not create directory '%s'",
- state_file_path);
- g_free (state_file_path);
- state_file_path = NULL;
- break;
- }
-
- continue;
- }
-
- g_warning ("Could not create file '%s': %s",
- state_file_path, g_strerror (errno));
- g_free (state_file_path);
- state_file_path = NULL;
- break;
- }
-
- close (fd);
- g_file_set_contents (state_file_path, data, -1, NULL);
- break;
- }
- g_free (data);
-
- restart = generate_command (xsmp->restart_command, xsmp->client_id,
- state_file_path);
- set_properties (xsmp,
- ptrarray_prop (SmRestartCommand, restart),
- NULL);
- g_ptr_array_free (restart, TRUE);
-
- if (state_file_path)
- {
- set_properties (xsmp,
- array_prop (SmDiscardCommand,
- "/bin/rm", "-rf", state_file_path,
- NULL),
- NULL);
- g_free (state_file_path);
- }
-}
-
-static void
-xsmp_interact (SmcConn smc_conn,
- SmPointer client_data)
-{
- EggSMClientXSMP *xsmp = client_data;
- EggSMClient *client = client_data;
-
- g_debug ("Received Interact message in state %s",
- EGG_SM_CLIENT_XSMP_STATE (xsmp));
-
- if (xsmp->state != XSMP_STATE_INTERACT_REQUEST)
- {
- fix_broken_state (xsmp, "Interact", TRUE, TRUE);
- return;
- }
-
- xsmp->state = XSMP_STATE_INTERACT;
- egg_sm_client_quit_requested (client);
-}
-
-static void
-xsmp_die (SmcConn smc_conn,
- SmPointer client_data)
-{
- EggSMClientXSMP *xsmp = client_data;
- EggSMClient *client = client_data;
-
- g_debug ("Received Die message in state %s",
- EGG_SM_CLIENT_XSMP_STATE (xsmp));
-
- sm_client_xsmp_disconnect (xsmp);
- egg_sm_client_quit (client);
-}
-
-static void
-xsmp_save_complete (SmcConn smc_conn,
- SmPointer client_data)
-{
- EggSMClientXSMP *xsmp = client_data;
-
- g_debug ("Received SaveComplete message in state %s",
- EGG_SM_CLIENT_XSMP_STATE (xsmp));
-
- if (xsmp->state == XSMP_STATE_SAVE_YOURSELF_DONE)
- xsmp->state = XSMP_STATE_IDLE;
- else
- fix_broken_state (xsmp, "SaveComplete", FALSE, FALSE);
-}
-
-static void
-xsmp_shutdown_cancelled (SmcConn smc_conn,
- SmPointer client_data)
-{
- EggSMClientXSMP *xsmp = client_data;
- EggSMClient *client = client_data;
-
- g_debug ("Received ShutdownCancelled message in state %s",
- EGG_SM_CLIENT_XSMP_STATE (xsmp));
-
- xsmp->shutting_down = FALSE;
-
- if (xsmp->state == XSMP_STATE_SAVE_YOURSELF_DONE)
- {
- /* We've finished interacting and now the SM has agreed to
- * cancel the shutdown.
- */
- xsmp->state = XSMP_STATE_IDLE;
- egg_sm_client_quit_cancelled (client);
- }
- else if (xsmp->state == XSMP_STATE_SHUTDOWN_CANCELLED)
- {
- /* Hm... ok, so we got a shutdown SaveYourself, which got
- * cancelled, but the application was still interacting, so we
- * didn't tell it yet, and then *another* SaveYourself arrived,
- * which we must still be waiting to tell the app about, except
- * that now that SaveYourself has been cancelled too! Dizzy yet?
- */
- xsmp->waiting_to_save_myself = FALSE;
- update_pending_events (xsmp);
- }
- else
- {
- g_debug ("Sending SaveYourselfDone(False)");
- SmcSaveYourselfDone (xsmp->connection, False);
-
- if (xsmp->state == XSMP_STATE_INTERACT)
- {
- /* The application is currently interacting, so we can't
- * tell it about the cancellation yet; we will wait until
- * after it calls egg_sm_client_will_quit().
- */
- xsmp->state = XSMP_STATE_SHUTDOWN_CANCELLED;
- }
- else
- {
- /* The shutdown was cancelled before the application got a
- * chance to interact.
- */
- xsmp->state = XSMP_STATE_IDLE;
- }
- }
-}
-
-/* Utilities */
-
-/* Create a restart/clone/Exec command based on @restart_command.
- * If @client_id is non-%NULL, add "--sm-client-id @client_id".
- * If @state_file is non-%NULL, add "--sm-client-state-file @state_file".
- *
- * None of the input strings are g_strdup()ed; the caller must keep
- * them around until it is done with the returned GPtrArray, and must
- * then free the array, but not its contents.
- */
-static GPtrArray *
-generate_command (char **restart_command, const char *client_id,
- const char *state_file)
-{
- GPtrArray *cmd;
- int i;
-
- cmd = g_ptr_array_new ();
- g_ptr_array_add (cmd, restart_command[0]);
-
- if (client_id)
- {
- g_ptr_array_add (cmd, (char *)"--sm-client-id");
- g_ptr_array_add (cmd, (char *)client_id);
- }
-
- if (state_file)
- {
- g_ptr_array_add (cmd, (char *)"--sm-client-state-file");
- g_ptr_array_add (cmd, (char *)state_file);
- }
-
- for (i = 1; restart_command[i]; i++)
- g_ptr_array_add (cmd, restart_command[i]);
-
- return cmd;
-}
-
-/* Takes a NULL-terminated list of SmProp * values, created by
- * array_prop, ptrarray_prop, string_prop, card8_prop, sets them, and
- * frees them.
- */
-static void
-set_properties (EggSMClientXSMP *xsmp, ...)
-{
- GPtrArray *props;
- SmProp *prop;
- va_list ap;
- guint i;
-
- props = g_ptr_array_new ();
-
- va_start (ap, xsmp);
- while ((prop = va_arg (ap, SmProp *)))
- g_ptr_array_add (props, prop);
- va_end (ap);
-
- if (xsmp->connection)
- {
- SmcSetProperties (xsmp->connection, props->len,
- (SmProp **)props->pdata);
- }
-
- for (i = 0; i < props->len; i++)
- {
- prop = props->pdata[i];
- g_free (prop->vals);
- g_free (prop);
- }
- g_ptr_array_free (props, TRUE);
-}
-
-/* Takes a NULL-terminated list of property names and deletes them. */
-static void
-delete_properties (EggSMClientXSMP *xsmp, ...)
-{
- GPtrArray *props;
- char *prop;
- va_list ap;
-
- if (!xsmp->connection)
- return;
-
- props = g_ptr_array_new ();
-
- va_start (ap, xsmp);
- while ((prop = va_arg (ap, char *)))
- g_ptr_array_add (props, prop);
- va_end (ap);
-
- SmcDeleteProperties (xsmp->connection, props->len,
- (char **)props->pdata);
-
- g_ptr_array_free (props, TRUE);
-}
-
-/* Takes an array of strings and creates a LISTofARRAY8 property. The
- * strings are neither dupped nor freed; they need to remain valid
- * until you're done with the SmProp.
- */
-static SmProp *
-array_prop (const char *name, ...)
-{
- SmProp *prop;
- SmPropValue pv;
- GArray *vals;
- char *value;
- va_list ap;
-
- prop = g_new (SmProp, 1);
- prop->name = (char *)name;
- prop->type = (char *)SmLISTofARRAY8;
-
- vals = g_array_new (FALSE, FALSE, sizeof (SmPropValue));
-
- va_start (ap, name);
- while ((value = va_arg (ap, char *)))
- {
- pv.length = strlen (value);
- pv.value = value;
- g_array_append_val (vals, pv);
- }
- va_end (ap);
-
- prop->num_vals = vals->len;
- prop->vals = (SmPropValue *)vals->data;
-
- g_array_free (vals, FALSE);
-
- return prop;
-}
-
-/* Takes a GPtrArray of strings and creates a LISTofARRAY8 property.
- * The array contents are neither dupped nor freed; they need to
- * remain valid until you're done with the SmProp.
- */
-static SmProp *
-ptrarray_prop (const char *name, GPtrArray *values)
-{
- SmProp *prop;
- SmPropValue pv;
- GArray *vals;
- guint i;
-
- prop = g_new (SmProp, 1);
- prop->name = (char *)name;
- prop->type = (char *)SmLISTofARRAY8;
-
- vals = g_array_new (FALSE, FALSE, sizeof (SmPropValue));
-
- for (i = 0; i < values->len; i++)
- {
- pv.length = strlen (values->pdata[i]);
- pv.value = values->pdata[i];
- g_array_append_val (vals, pv);
- }
-
- prop->num_vals = vals->len;
- prop->vals = (SmPropValue *)vals->data;
-
- g_array_free (vals, FALSE);
-
- return prop;
-}
-
-/* Takes a string and creates an ARRAY8 property. The string is
- * neither dupped nor freed; it needs to remain valid until you're
- * done with the SmProp.
- */
-static SmProp *
-string_prop (const char *name, const char *value)
-{
- SmProp *prop;
-
- prop = g_new (SmProp, 1);
- prop->name = (char *)name;
- prop->type = (char *)SmARRAY8;
-
- prop->num_vals = 1;
- prop->vals = g_new (SmPropValue, 1);
-
- prop->vals[0].length = strlen (value);
- prop->vals[0].value = (char *)value;
-
- return prop;
-}
-
-/* Takes a char and creates a CARD8 property. */
-static SmProp *
-card8_prop (const char *name, unsigned char value)
-{
- SmProp *prop;
- char *card8val;
-
- /* To avoid having to allocate and free prop->vals[0], we cheat and
- * make vals a 2-element-long array and then use the second element
- * to store value.
- */
-
- prop = g_new (SmProp, 1);
- prop->name = (char *)name;
- prop->type = (char *)SmCARD8;
-
- prop->num_vals = 1;
- prop->vals = g_new (SmPropValue, 2);
- card8val = (char *)(&prop->vals[1]);
- card8val[0] = value;
-
- prop->vals[0].length = 1;
- prop->vals[0].value = card8val;
-
- return prop;
-}
-
-/* ICE code. This makes no effort to play nice with anyone else trying
- * to use libICE. Fortunately, no one uses libICE for anything other
- * than SM. (DCOP uses ICE, but it has its own private copy of
- * libICE.)
- *
- * When this moves to gtk, it will need to be cleverer, to avoid
- * tripping over old apps that use MateClient or that use libSM
- * directly.
- */
-
-#include <X11/ICE/ICElib.h>
-#include <fcntl.h>
-
-static void ice_error_handler (IceConn ice_conn,
- Bool swap,
- int offending_minor_opcode,
- unsigned long offending_sequence,
- int error_class,
- int severity,
- IcePointer values);
-static void ice_io_error_handler (IceConn ice_conn);
-static void ice_connection_watch (IceConn ice_conn,
- IcePointer client_data,
- Bool opening,
- IcePointer *watch_data);
-
-static void
-ice_init (void)
-{
- IceSetIOErrorHandler (ice_io_error_handler);
- IceSetErrorHandler (ice_error_handler);
- IceAddConnectionWatch (ice_connection_watch, NULL);
-}
-
-static gboolean
-process_ice_messages (IceConn ice_conn)
-{
- IceProcessMessagesStatus status;
-
- status = IceProcessMessages (ice_conn, NULL, NULL);
-
- switch (status)
- {
- case IceProcessMessagesSuccess:
- return TRUE;
-
- case IceProcessMessagesIOError:
- sm_client_xsmp_disconnect (IceGetConnectionContext (ice_conn));
- return FALSE;
-
- case IceProcessMessagesConnectionClosed:
- return FALSE;
-
- default:
- g_assert_not_reached ();
- }
-}
-
-static gboolean
-ice_iochannel_watch (GIOChannel *channel,
- GIOCondition condition,
- gpointer client_data)
-{
- return process_ice_messages (client_data);
-}
-
-static void
-ice_connection_watch (IceConn ice_conn,
- IcePointer client_data,
- Bool opening,
- IcePointer *watch_data)
-{
- guint watch_id;
-
- if (opening)
- {
- GIOChannel *channel;
- int fd = IceConnectionNumber (ice_conn);
-
- fcntl (fd, F_SETFD, fcntl (fd, F_GETFD, 0) | FD_CLOEXEC);
- channel = g_io_channel_unix_new (fd);
- watch_id = g_io_add_watch (channel, G_IO_IN | G_IO_ERR,
- ice_iochannel_watch, ice_conn);
- g_io_channel_unref (channel);
-
- *watch_data = GUINT_TO_POINTER (watch_id);
- }
- else
- {
- watch_id = GPOINTER_TO_UINT (*watch_data);
- g_source_remove (watch_id);
- }
-}
-
-static void
-ice_error_handler (IceConn ice_conn,
- Bool swap,
- int offending_minor_opcode,
- unsigned long offending_sequence,
- int error_class,
- int severity,
- IcePointer values)
-{
- /* Do nothing */
-}
-
-static void
-ice_io_error_handler (IceConn ice_conn)
-{
- /* Do nothing */
-}
-
-static void
-smc_error_handler (SmcConn smc_conn,
- Bool swap,
- int offending_minor_opcode,
- unsigned long offending_sequence,
- int error_class,
- int severity,
- SmPointer values)
-{
- /* Do nothing */
-}