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Diffstat (limited to 'libegg/eggsmclient-xsmp.c')
| -rw-r--r-- | libegg/eggsmclient-xsmp.c | 1372 |
1 files changed, 0 insertions, 1372 deletions
diff --git a/libegg/eggsmclient-xsmp.c b/libegg/eggsmclient-xsmp.c deleted file mode 100644 index b95dc518..00000000 --- a/libegg/eggsmclient-xsmp.c +++ /dev/null @@ -1,1372 +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 <gtk/gtk.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 **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) - { - char *cmdline; - - 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; - - /* 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, *value, *exec; - - groups = g_key_file_get_groups (state_file, NULL); - for (g = 0; groups[g]; g++) - { - char **keys; - - 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) - { - int fd; - - 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, "--sm-client-id"); - g_ptr_array_add (cmd, (char *)client_id); - } - - if (state_file) - { - g_ptr_array_add (cmd, "--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 = 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 *) (gpointer) 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 = 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 *) (gpointer) 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 = 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 = 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 */ -} |