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Havoc Pennington 2001-09-12 06:06:08 +00:00
parent 9f66f63bf5
commit a4346200e8
9 changed files with 980 additions and 0 deletions
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24
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/* msm client object */
/*
* Copyright (C) 2001 Havoc Pennington
*
* 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 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include "client.h"

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/* msm client object */
/*
* Copyright (C) 2001 Havoc Pennington
*
* 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 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef MSM_CLIENT_H
#define MSM_CLIENT_H
#include <glib.h>
#include <X11/ICE/ICElib.h>
#include <X11/SM/SMlib.h>
#include "server.h"
#endif

22
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/* msm GUI stuff */
/*
* Copyright (C) 2001 Havoc Pennington
*
* 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 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include "gui.h"

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/* msm GUI stuff */
/*
* Copyright (C) 2001 Havoc Pennington
*
* 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 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef MSM_GUI_H
#define MSM_GUI_H
#endif

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/* msm main() */
/*
* Copyright (C) 2001 Havoc Pennington
*
* 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 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include <gtk/gtk.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <unistd.h>
#include "server.h"
#include "util.h"
static GMainLoop *main_loop = NULL;
static void
usage (void)
{
g_print ("msm [--choose-session=NAME] [--failsafe]\n");
exit (1);
}
static void
shutdown_cleanly_on_signal (int signo)
{
if (main_loop && g_main_is_running (main_loop))
g_main_quit (main_loop);
}
int
main (int argc, char **argv)
{
int i;
const char *prev_arg;
char *session_name;
gboolean failsafe;
struct sigaction act;
sigset_t empty_mask;
sigemptyset (&empty_mask);
act.sa_handler = SIG_IGN;
act.sa_mask = empty_mask;
act.sa_flags = 0;
sigaction (SIGPIPE, &act, 0);
act.sa_handler = shutdown_cleanly_on_signal;
sigaction (SIGHUP, &act, 0);
sigaction (SIGINT, &act, 0);
/* connect to display */
gtk_init (&argc, &argv);
/* Parse options lamely */
session_name = NULL;
failsafe = FALSE;
prev_arg = NULL;
i = 1;
while (i < argc)
{
const char *arg = argv[i];
if (strcmp (arg, "--help") == 0 ||
strcmp (arg, "-h") == 0 ||
strcmp (arg, "-?") == 0)
usage ();
else if (strcmp (arg, "--failsafe") == 0)
failsafe = TRUE;
else if (strstr (arg, "--choose-session=") == arg)
{
const char *name;
if (session_name != NULL)
msm_fatal ("Can't specify session name twice\n");
name = strchr (arg, '=');
++name;
session_name = g_strdup (name);
}
else if (prev_arg &&
strcmp (prev_arg, "--choose-session") == 0)
{
if (session_name != NULL)
msm_fatal ("Can't specify session name twice\n");
session_name = g_strdup (arg);
}
else if (strcmp (arg, "--choose-session") == 0)
; /* wait for next arg */
else
usage ();
prev_arg = arg;
++i;
}
main_loop = g_main_loop_new (NULL, FALSE);
g_main_run (main_loop);
return 0;
}

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/* msm server object */
/*
* Copyright (C) 2001 Havoc Pennington
*
* 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 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
* Some code in here from xsm:
*
* Copyright 1993, 1998 The Open Group
*
* All Rights Reserved.
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name of The Open Group
* shall not be used in advertising or otherwise to promote the sale,
* use or other dealings in this Software without prior written
* authorization from The Open Group.
*/
#include "server.h"
struct _MsmServer
{
GList *clients;
IceAuthDataEntry *auth_entries;
int n_auth_entries;
};
static Status register_client_callback (SmsConn smsConn,
SmPointer managerData,
char *previousId);
static void interact_request_callback (SmsConn smsConn,
SmPointer managerData,
int dialogType);
static void interact_done_callback (SmsConn smsConn,
SmPointer managerData,
Bool cancelShutdown);
static void save_yourself_request_callback (SmsConn smsConn,
SmPointer managerData,
int saveType,
Bool shutdown,
int interactStyle,
Bool fast,
Bool global);
static void save_yourself_phase2_request_callback (SmsConn smsConn,
SmPointer managerData);
static void save_yourself_done_callback (SmsConn smsConn,
SmPointer managerData,
Bool success);
static void close_connection_callback (SmsConn smsConn,
SmPointer managerData,
int count,
char **reasonMsgs);
static Status new_client_callback (SmsConn smsConn,
SmPointer managerData,
unsigned long *maskRet,
SmsCallbacks *callbacksRet,
char **failureReasonRet);
static Bool host_auth_callback (char *hostname);
static void ice_init (MsmServer *server);
static gboolean create_auth_entries (MsmServer *server,
IceListenObject *listen_objs,
int n_listen_objs);
static void free_auth_entries (IceAuthDataEntry *entries);
MsmServer*
msm_server_new (void)
{
char errbuf[256];
MsmServer *server;
server = g_new (MsmServer, 1);
server->clients = NULL;
server->auth_entries = NULL;
server->n_auth_entries = 0;
if (!SmsInitialize (PACKAGE, VERSION,
new_client_callback,
server,
host_auth_callback,
sizeof (errbuf), errbuf))
msm_fatal (_("Could not initialize SMS: %s\n"), errbuf);
ice_init ();
}
void
msm_server_free (MsmServer *server)
{
free_auth_entries (server->auth_entries, server->n_auth_entries);
g_free (server);
}
static Status
register_client_callback (SmsConn smsConn,
SmPointer managerData,
char *previousId)
{
}
static void
interact_request_callback (SmsConn smsConn,
SmPointer managerData,
int dialogType)
{
}
static void
interact_done_callback (SmsConn smsConn,
SmPointer managerData,
Bool cancelShutdown)
{
}
static void
save_yourself_request_callback (SmsConn smsConn,
SmPointer managerData,
int saveType,
Bool shutdown,
int interactStyle,
Bool fast,
Bool global)
{
}
static void
save_yourself_phase2_request_callback (SmsConn smsConn,
SmPointer managerData)
{
}
static void
save_yourself_done_callback (SmsConn smsConn,
SmPointer managerData,
Bool success)
{
}
static void
close_connection_callback (SmsConn smsConn,
SmPointer managerData,
int count,
char **reasonMsgs)
{
}
static Status
new_client_callback (SmsConn smsConn,
SmPointer managerData,
unsigned long *maskRet,
SmsCallbacks *callbacksRet,
char **failureReasonRet)
{
}
static Bool
host_auth_callback (char *hostname)
{
/* not authorized */
return False;
}
/*
* ICE utility code, cut-and-pasted from Metacity, and in turn
* from libgnomeui, and also some merged in from gsm, and xsm,
* and even ksm
*/
static void ice_io_error_handler (IceConn connection);
static void new_ice_connection (IceConn connection, IcePointer client_data,
Bool opening, IcePointer *watch_data);
static void setup_authentication (MsmServer *server,
IceListenObject *listen_objs,
int n_listen_objs);
/* This is called when data is available on an ICE connection. */
static gboolean
process_ice_messages (GIOChannel *channel,
GIOCondition condition,
gpointer client_data)
{
IceConn connection = (IceConn) client_data;
IceProcessMessagesStatus status;
/* This blocks infinitely sometimes. I don't know what
* to do about it. Checking "condition" just breaks
* session management.
*/
status = IceProcessMessages (connection, NULL, NULL);
if (status == IceProcessMessagesIOError)
{
#if 0
IcePointer context = IceGetConnectionContext (connection);
#endif
/* We were disconnected */
IceSetShutdownNegotiation (connection, False);
IceCloseConnection (connection);
}
return TRUE;
}
/* This is called when a new ICE connection is made. It arranges for
the ICE connection to be handled via the event loop. */
static void
new_ice_connection (IceConn connection, IcePointer client_data, Bool opening,
IcePointer *watch_data)
{
guint input_id;
if (opening)
{
/* Make sure we don't pass on these file descriptors to any
* exec'ed children
*/
GIOChannel *channel;
fcntl (IceConnectionNumber (connection), F_SETFD,
fcntl (IceConnectionNumber (connection), F_GETFD, 0) | FD_CLOEXEC);
channel = g_io_channel_unix_new (IceConnectionNumber (connection));
input_id = g_io_add_watch (channel,
G_IO_IN | G_IO_ERR,
process_ice_messages,
connection);
g_io_channel_unref (channel);
*watch_data = (IcePointer) GUINT_TO_POINTER (input_id);
}
else
{
input_id = GPOINTER_TO_UINT ((gpointer) *watch_data);
g_source_remove (input_id);
}
}
static gboolean
accept_connection (GIOChannel *channel,
GIOCondition condition,
gpointer client_data)
{
IceListenObject *listen_obj;
IceAcceptStatus status;
IceConnectStatus cstatus;
IceConn cnxn;
listen_obj = client_data;
cnxn = IceAcceptConnection (listen_obj,
&status);
if (cnxn == NULL || status != IceAcceptSuccess)
{
msm_warning (_("Failed to accept new ICE connection\n"));
return TRUE;
}
/* I believe this means we refuse to argue with clients over
* whether we are going to shut their ass down. But I could
* be wrong.
*/
IceSetShutdownNegotiation (cnxn, False);
/* FIXME This is a busy wait, I believe. The libSM docs say we need
* to select on all the ICE file descriptors. We could do that by
* reentering the main loop as gnome-session does; but that would
* complicate everything. So for now, copying ksm and doing it this
* way.
*
* If this causes problems, we can try adding a g_main_iteration()
* in here.
*/
cstatus = IceConnectionStatus (cnxn);
while (cstatus == IceConnectPending)
{
IceProcessMessages (cnxn, NULL, NULL);
cstatus = IceConnectionStatus (cnxn);
}
if (cstatus != IceConnectAccepted)
{
if (cstatus == IceConnectIOError)
msm_warning (_("IO error trying to accept new connection (client may have crashed trying to connect to the session manager, or client may be broken, or someone yanked the ethernet cable)"));
else
msm_warning (_("Rejecting new connection (some client was not allowed to connect to the session manager)"));
IceCloseConnection (cnxn);
}
return TRUE;
}
/* We call any handler installed before (or after) ice_init but
* avoid calling the default libICE handler which does an exit()
*/
static void
ice_io_error_handler (IceConn connection)
{
IceCloseConnection (connection);
}
static void
ice_init (MsmServer *server)
{
static gboolean ice_initted = FALSE;
if (! ice_initted)
{
int saved_umask;
int n_listen_objs;
IceListenObj *listen_objs;
char errbuf[256];
char *ids;
char *p;
int i;
IceSetIOErrorHandler (ice_io_error_handler);
IceAddConnectionWatch (new_ice_connection, NULL);
/* Some versions of IceListenForConnections have a bug which causes
* the umask to be set to 0 on certain types of failures. So we
* work around this by saving and restoring the umask.
*/
saved_umask = umask (0);
umask (saved_umask);
if (!IceListenForConnections (&n_listen_objs,
&listen_objs,
sizeof (errbuf),
errbuf))
msm_fatal (_("Could not initialize ICE: %s\n"), errbuf);
/* See above. */
umask (saved_umask);
i = 0;
while (i < n_listen_objs)
{
GIOChannel *channel;
channel = g_io_channel_unix_new (IceGetListenConnectionNumber (listen_objs[i]));
g_io_add_watch (channel, G_IO_IN,
accept_connection,
&listen_objs[i]);
g_io_channel_unref (channel);
++i;
}
if (!create_auth_entries (server, listen_objs, n_listen_objs))
{
meta_fatal (_("Could not set up authentication"));
return;
}
ids = IceComposeNetworkIdList (n_listen_objs, listen_objs);
p = g_strconcat ("SESSION_MANAGER=", ids, NULL);
putenv (p);
/* example code I can find doesn't free "ids", and we don't free "p"
* since putenv is lame
*/
ice_initted = TRUE;
}
}
/* The idea here is to create a temporary file with an iceauth script
* in it, and run that through iceauth. At the same time,
* we generate a temporary file to use for removing the auth entries, and
* call that on exit. The code here is from xsm and every other session
* manager has cut-and-pasted it.
*/
static char *add_file = NULL;
static char *remove_file = NULL;
static gboolean
run_iceauth_script (const char *filename)
{
char *argv[4];
GError *err;
int status;
argv[0] = "iceauth";
argv[1] = "source";
argv[2] = filename;
argv[3] = NULL;
err = NULL;
status = 1;
if (!g_spawn_sync (NULL, argv, NULL,
G_SPAWN_SEARCH_PATH,
NULL, NULL,
NULL, NULL,
&status,
&err) ||
status != 0)
{
msm_warning (_("Failed to run iceauth script %s: %s\n"),
filename,
err ? err->message : _("iceauth returned nonzero status"));
if (err)
g_error_free (err);
return FALSE;
}
return TRUE;
}
static gboolean
create_auth_entries (MsmServer *server,
IceListenObject *listen_objs,
int n_listen_objs)
{
FILE *addfp = NULL;
FILE *removefp = NULL;
const char *path;
int original_umask;
int i;
int fd = -1;
char *tmpl = NULL;
GError *err;
IceAuthDataEntry *entries;
original_umask = umask (0077); /* disallow non-owner access */
path = g_getenv ("SM_SAVE_DIR");
if (!path)
{
path = g_get_home_dir ();
if (!path)
path = ".";
}
err = NULL;
tmpl = g_strconcat (path, "/msm-add-commands-XXXXXX", NULL);
fd = g_file_open_tmp (tmpl, &add_file, &err);
if (err)
{
msm_fatal (_("Could not create ICE authentication script: %s\n"),
err->message);
g_assert_not_reached ();
return;
}
addfp = fdopen (fd, "w");
if (addfp == NULL)
goto bad;
g_free (tmpl);
tmpl = NULL;
err = NULL;
tmpl = g_strconcat (path, "/msm-remove-commands-XXXXXX", NULL);
fd = g_file_open_tmp (tmpl, &remove_file, &err);
if (err)
{
msm_fatal (_("Could not create ICE authentication script: %s\n"),
err->message);
g_assert_not_reached ();
return;
}
removefp = fdopen (fd, "w");
if (removefp == NULL)
goto bad;
g_free (tmpl);
tmpl = NULL;
server->n_auth_entries = n_listen_objs * 2;
server->auth_entries = g_new (IceAuthDataEntry, server->n_auth_entries);
entries = server->auth_entries;
for (i = 0; i < server->n_auth_entries; i += 2)
{
entries[i].network_id =
IceGetListenConnectionString (listen_objs[i/2]);
entries[i].protocol_name = "ICE";
entries[i].auth_name = "MIT-MAGIC-COOKIE-1";
entries[i].auth_data =
IceGenerateMagicCookie (MAGIC_COOKIE_LEN);
entries[i].auth_data_length = MAGIC_COOKIE_LEN;
entries[i+1].network_id =
IceGetListenConnectionString (listen_objs[i/2]);
entries[i+1].protocol_name = "XSMP";
entries[i+1].auth_name = "MIT-MAGIC-COOKIE-1";
entries[i+1].auth_data =
IceGenerateMagicCookie (MAGIC_COOKIE_LEN);
entries[i+1].auth_data_length = MAGIC_COOKIE_LEN;
write_iceauth (addfp, removefp, &entries[i]);
write_iceauth (addfp, removefp, &entries[i+1]);
IceSetPaAuthData (2, &entries[i]);
IceSetHostBasedAuthProc (listen_objs[i/2], host_auth_callback);
}
fclose (addfp);
fclose (removefp);
umask (original_umask);
if (!run_iceauth_script (add_file))
return FALSE;
unlink (add_file);
return TRUE;
bad:
if (tmpl)
g_free (tmpl);
if (addfp)
fclose (addfp);
if (removefp)
fclose (removefp);
if (addAuthFile)
{
unlink (addAuthFile);
free (addAuthFile);
}
if (remAuthFile)
{
unlink (remAuthFile);
free (remAuthFile);
}
return FALSE;
}
static void
free_auth_entries (IceAuthDataEntry *entries,
int n_entries)
{
int i;
for (i = 0; i < n_entries; i++)
{
g_free (entries[i].network_id);
g_free (entries[i].auth_data);
}
g_free (entries);
run_iceauth_script (remove_file);
unlink (remove_file);
g_free (add_file);
g_free (remove_file);
add_file = NULL;
remove_file = NULL;
}

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/* msm server object */
/*
* Copyright (C) 2001 Havoc Pennington
*
* 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 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef MSM_SERVER_H
#define MSM_SERVER_H
#include <glib.h>
#include <X11/ICE/ICElib.h>
#include <X11/SM/SMlib.h>
typedef struct _MsmClient MsmClient;
typedef struct _MsmServer MsmServer;
MsmServer* msm_server_new (void);
void msm_server_free (MsmServer *server);
#endif

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/* msm utils */
/*
* Copyright (C) 2001 Havoc Pennington
*
* 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 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include "util.h"
void
msm_fatal (const char *format, ...)
{
va_list args;
gchar *str;
g_return_if_fail (format != NULL);
va_start (args, format);
str = g_strdup_vprintf (format, args);
va_end (args);
fputs ("Session manager: ", stderr);
fputs (str, stderr);
fflush (stderr);
g_free (str);
exit (1);
}
void
msm_warning (const char *format, ...)
{
va_list args;
gchar *str;
g_return_if_fail (format != NULL);
va_start (args, format);
str = g_strdup_vprintf (format, args);
va_end (args);
fputs ("Session manager: ", stderr);
fputs (str, stderr);
fflush (stderr);
g_free (str);
exit (1);
}

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/* msm utils */
/*
* Copyright (C) 2001 Havoc Pennington
*
* 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 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef MSM_UTIL_H
#define MSM_UTIL_H
#include <glib.h>
/* FIXME */
#include <config.h>
#define _(x) x
#define N_(x) x
void msm_warning (const char *format,
...) G_GNUC_PRINTF (1, 2);
void msm_fatal (const char *format,
...) G_GNUC_PRINTF (1, 2);
#endif