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xsrc/external/mit/ctwm/dist/session.c
Lionel Sambuc 632fcf01c7 xsrc as of '2015/10/10 12:00:00 UTC'
2015-10-15 21:39:42 +02:00

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/*****************************************************************************/
/** Copyright 1988 by Evans & Sutherland Computer Corporation, **/
/** Salt Lake City, Utah **/
/** Portions Copyright 1989 by the Massachusetts Institute of Technology **/
/** Cambridge, Massachusetts **/
/** **/
/** All Rights Reserved **/
/** **/
/** Permission to use, copy, modify, and distribute this software and **/
/** its documentation for any purpose and without fee is hereby **/
/** granted, provided that the above copyright notice appear in all **/
/** copies and that both that copyright notice and this permis- **/
/** sion notice appear in supporting documentation, and that the **/
/** names of Evans & Sutherland and M.I.T. not be used in advertising **/
/** in publicity pertaining to distribution of the software without **/
/** specific, written prior permission. **/
/** **/
/** EVANS & SUTHERLAND AND M.I.T. DISCLAIM ALL WARRANTIES WITH REGARD **/
/** TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANT- **/
/** ABILITY AND FITNESS, IN NO EVENT SHALL EVANS & SUTHERLAND OR **/
/** M.I.T. BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAM- **/
/** AGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA **/
/** OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER **/
/** TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE **/
/** OR PERFORMANCE OF THIS SOFTWARE. **/
/*****************************************************************************/
/*
* [ ctwm ]
*
* Copyright 1992 Claude Lecommandeur.
*
* Permission to use, copy, modify and distribute this software [ctwm] and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting documen-
* tation, and that the name of Claude Lecommandeur not be used in adverti-
* sing or publicity pertaining to distribution of the software without
* specific, written prior permission. Claude Lecommandeur make no represen-
* tations about the suitability of this software for any purpose. It is
* provided "as is" without express or implied warranty.
*
* Claude Lecommandeur DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO
* EVENT SHALL Claude Lecommandeur BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*
* Author: Claude Lecommandeur [ lecom@sic.epfl.ch ][ April 1992 ]
*/
/*********************************************************************
*
* This module has been modified by
* Matthew McNeill (21 Mar 1997) - University of Durham (UK)
* for the support of the X Session Management Protocol
*
*********************************************************************
*
* Copyright (c) 1996-1997 The University of Durham, UK -
* Department of Computer Science.
* All rights reserved.
*
* Permission is hereby granted, without written agreement and without
* licence or royalty fees, to use, copy, modify, and distribute this
* software and its documentation, provided that usage, copying, modification
* or distribution is not for direct commercial advantage and that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software. To use, copy, modify or distribute this
* software and its documentation otherwise requires a fee and/or specific
* permission.
*
* IN NO EVENT SHALL THE UNIVERSITY OF DURHAM BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
* DURHAM HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* THE UNIVERSITY OF DURHAM SPECIFICALLY DISCLAIMS ANY WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE UNIVERSITY OF DURHAM HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
********************************************************************/
/**********************************************************************
*
* $XConsortium: session.c,v 1.18 95/01/04 22:28:37 mor Exp $
*
* Session support for the X11R6 XSMP (X Session Management Protocol)
*
* 95/01/04 Ralph Mor, X Consortium Initial Version.
*
* Do the necessary modification to be integrated in ctwm.
* Can no longer be used for the standard twm.
*
* 21 Mar 1997 Matthew McNeill, Durham University Modified Version.
*
**********************************************************************/
#include <X11/Xos.h>
#ifndef X_NOT_POSIX
#ifdef _POSIX_SOURCE
#include <limits.h>
#else
#define _POSIX_SOURCE
#include <limits.h>
#undef _POSIX_SOURCE
#endif
#endif /* X_NOT_POSIX */
#ifndef PATH_MAX
#include <sys/param.h>
#ifndef PATH_MAX
#ifdef MAXPATHLEN
#define PATH_MAX MAXPATHLEN
#else
#define PATH_MAX 1024
#endif
#endif
#endif /* PATH_MAX */
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <stdio.h>
#include "twm.h"
#include "icons.h"
#include "screen.h"
#include "session.h"
SmcConn smcConn = NULL;
XtInputId iceInputId;
char *twm_clientId;
TWMWinConfigEntry *winConfigHead = NULL;
Bool gotFirstSave = 0;
Bool sent_save_done = 0;
#define SAVEFILE_VERSION 2
/*===[ Get Client SM_CLIENT_ID ]=============================================*/
char *GetClientID (Window window)
/* This function returns the value of the session manager client ID property
* given a valid window handle. If no such property exists on a window then
* null is returned
*/
{
char *client_id = NULL;
Window client_leader;
XTextProperty tp;
Atom actual_type;
int actual_format;
unsigned long nitems;
unsigned long bytes_after;
Window *prop = NULL;
if (XGetWindowProperty (dpy, window, _XA_WM_CLIENT_LEADER,
0L, 1L, False, AnyPropertyType, &actual_type, &actual_format,
&nitems, &bytes_after, (unsigned char **)&prop) == Success)
{
if (actual_type == XA_WINDOW && actual_format == 32 &&
nitems == 1 && bytes_after == 0)
{
client_leader = *prop;
if (XGetTextProperty (dpy, client_leader, &tp, _XA_SM_CLIENT_ID))
{
if (tp.encoding == XA_STRING &&
tp.format == 8 && tp.nitems != 0)
client_id = (char *) tp.value;
}
}
if (prop)
XFree (prop);
}
return client_id;
}
/*===[ Get Window Role ]=====================================================*/
char *GetWindowRole (Window window)
/* this function returns the WM_WINDOW_ROLE property of a window
*/
{
XTextProperty tp;
if (XGetTextProperty (dpy, window, &tp, _XA_WM_WINDOW_ROLE))
{
if (tp.encoding == XA_STRING && tp.format == 8 && tp.nitems != 0)
return ((char *) tp.value);
}
return NULL;
}
/*===[ Various file write procedures ]=======================================*/
static int write_byte (FILE *file, unsigned char b)
{
if (fwrite ((char *) &b, 1, 1, file) != 1)
return 0;
return 1;
}
/*---------------------------------------------------------------------------*/
static int write_ushort (FILE *file, unsigned short s)
{
unsigned char file_short[2];
file_short[0] = (s & (unsigned)0xff00) >> 8;
file_short[1] = s & 0xff;
if (fwrite ((char *) file_short, (int) sizeof (file_short), 1, file) != 1)
return 0;
return 1;
}
/*---------------------------------------------------------------------------*/
static int write_short (FILE *file, short s)
{
unsigned char file_short[2];
file_short[0] = (s & (unsigned)0xff00) >> 8;
file_short[1] = s & 0xff;
if (fwrite ((char *) file_short, (int) sizeof (file_short), 1, file) != 1)
return 0;
return 1;
}
/*---------------------------------------------------------------------------*
* Matthew McNeill Feb 1997 - required to save the occupation state as an
* integer.
*/
static int write_int (FILE *file, int i)
{
unsigned char file_int[4];
file_int[0] = (i & (unsigned)0xff000000) >> 24;
file_int[1] = (i & (unsigned)0x00ff0000) >> 16;
file_int[2] = (i & (unsigned)0x0000ff00) >> 8;
file_int[3] = (i & (unsigned)0x000000ff);
if (fwrite ((char *) file_int, (int) sizeof (file_int), 1, file) != 1)
return 0;
return 1;
}
/*---------------------------------------------------------------------------*/
static int write_counted_string (FILE *file, char *string)
{
if (string)
{
unsigned char count = strlen (string);
if (write_byte (file, count) == 0)
return 0;
if (fwrite (string, (int) sizeof (char), (int) count, file) != count)
return 0;
}
else
{
if (write_byte (file, 0) == 0)
return 0;
}
return 1;
}
/*===[ various file read procedures ]========================================*/
static int read_byte (FILE *file, unsigned char *bp)
{
if (fread ((char *) bp, 1, 1, file) != 1)
return 0;
return 1;
}
/*---------------------------------------------------------------------------*/
static int read_ushort (FILE *file, unsigned short *shortp)
{
unsigned char file_short[2];
if (fread ((char *) file_short, (int) sizeof (file_short), 1, file) != 1)
return 0;
*shortp = file_short[0] * 256 + file_short[1];
return 1;
}
/*---------------------------------------------------------------------------*/
static int read_short (FILE *file, short *shortp)
{
unsigned char file_short[2];
if (fread ((char *) file_short, (int) sizeof (file_short), 1, file) != 1)
return 0;
*shortp = file_short[0] * 256 + file_short[1];
return 1;
}
/*---------------------------------------------------------------------------*
* Matthew McNeill Feb 1997 - required to save the occupation state as an
* integer.
*/
static int read_int (FILE *file, int *intp)
{
unsigned char file_int[4];
if (fread ((char *) file_int, (int) sizeof (file_int), 1, file) != 1)
return 0;
*intp = (((int) file_int[0]) << 24) & 0xff000000;
*intp += (((int) file_int[1]) << 16) & 0x00ff0000;
*intp += (((int) file_int[2]) << 8) & 0x0000ff00;
*intp += ((int) file_int[3]);
return 1;
}
/*---------------------------------------------------------------------------*/
static int read_counted_string (FILE *file, char **stringp)
{
unsigned char len;
char *data;
if (read_byte (file, &len) == 0)
return 0;
if (len == 0) {
data = 0;
} else {
data = malloc ((unsigned) len + 1);
if (!data)
return 0;
if (fread (data, (int) sizeof (char), (int) len, file) != len) {
free (data);
return 0;
}
data[len] = '\0';
}
*stringp = data;
return 1;
}
/*===[ Definition of a window config entry ]===================================
*
* An entry in the saved window config file looks like this:
*
* FIELD BYTES
* ----- ----
* SM_CLIENT_ID ID len 1 (may be 0)
* SM_CLIENT_ID LIST of bytes (may be NULL)
*
* WM_WINDOW_ROLE length 1 (may be 0)
* WM_WINDOW_ROLE LIST of bytes (may be NULL)
*
* if no WM_WINDOW_ROLE (length = 0)
*
* WM_CLASS "res name" length 1
* WM_CLASS "res name" LIST of bytes
* WM_CLASS "res class" length 1
* WM_CLASS "res class" LIST of bytes
* WM_NAME length 1 (0 if name changed)
* WM_NAME LIST of bytes
* WM_COMMAND arg count 1 (0 if no SM_CLIENT_ID)
* For each arg in WM_COMMAND
* arg length 1
* arg LIST of bytes
*
* Iconified bool 1
* Icon info present bool 1
*
* if icon info present
* icon x 2
* icon y 2
*
* Geom x 2
* Geom y 2
* Geom width 2
* Geom height 2
*
* Width ever changed by user 1
* Height ever changed by user 1
*
* ------------------[ Matthew McNeill Feb 1997 ]----------------------------
*
* Workspace Occupation 4
*
*/
/*===[ Write Window Config Entry to file ]===================================*/
int WriteWinConfigEntry (FILE *configFile, TwmWindow *theWindow,
char *clientId, char *windowRole)
/* this function writes a window configuration entry of a given window to
* the given configuration file
*/
{
char **wm_command;
int wm_command_count, i;
/* ...unless the config file says otherwise. */
if (LookInList (Scr == NULL ? ScreenList [0]->DontSave : Scr->DontSave,
theWindow->full_name, &theWindow->class))
return 1;
if (!write_counted_string (configFile, clientId))
return 0;
if (!write_counted_string (configFile, windowRole))
return 0;
if (!windowRole)
{
if (!write_counted_string (configFile, theWindow->class.res_name))
return 0;
if (!write_counted_string (configFile, theWindow->class.res_class))
return 0;
if (theWindow->nameChanged)
{
/*
* If WM_NAME changed on this window, we can't use it as
* a criteria for looking up window configurations. See the
* longer explanation in the GetWindowConfig() function below.
*/
if (!write_counted_string (configFile, NULL))
return 0;
}
else
{
if (!write_counted_string (configFile, theWindow->name))
return 0;
}
wm_command = NULL;
wm_command_count = 0;
XGetCommand (dpy, theWindow->w, &wm_command, &wm_command_count);
if (clientId || !wm_command || wm_command_count == 0)
{
if (!write_byte (configFile, 0))
return 0;
}
else
{
if (!write_byte (configFile, (char) wm_command_count))
return 0;
for (i = 0; i < wm_command_count; i++)
if (!write_counted_string (configFile, wm_command[i]))
return 0;
XFreeStringList (wm_command);
}
}
/* ===================[ Matthew McNeill Feb 1997 ]========================= *
* there has been a structural change to TwmWindow in ctwm. The Icon information
* is in a sub-structure now. The presence of icon information is not indicative
* of its current state. There is a new boolean condition for this (isicon)
*/
if (!write_byte (configFile, theWindow->isicon ? 1 : 0)) return 0; /* iconified */
/* ===================[ Matthew McNeill Feb 1997 ]========================= *
* there has been a structural change to TwmWindow in ctwm. The Icon information
* is in a sub-structure now, if there is no icon, this sub-structure does
* not exist and the attempted access (below) causes a core dump.
* we need to check that the structure exists before trying to access it
*/
if (theWindow->icon)
{
if (!write_byte (configFile, theWindow->icon->w ? 1 : 0)) return 0; /* icon info exists */
if (theWindow->icon->w)
{
int icon_x, icon_y;
XGetGeometry (dpy, theWindow->icon->w, &JunkRoot, &icon_x,
&icon_y, &JunkWidth, &JunkHeight, &JunkBW, &JunkDepth);
if (!write_short (configFile, (short) icon_x)) return 0;
if (!write_short (configFile, (short) icon_y)) return 0;
}
}
else
{
if (!write_byte (configFile, 0)) return 0; /* icon does not have any information */
}
/* ======================================================================= */
if (!write_short (configFile, (short) theWindow->frame_x))
return 0;
if (!write_short (configFile, (short) theWindow->frame_y))
return 0;
if (!write_ushort (configFile, (unsigned short) theWindow->attr.width))
return 0;
if (!write_ushort (configFile, (unsigned short) theWindow->attr.height))
return 0;
if (!write_byte (configFile, theWindow->widthEverChangedByUser ? 1 : 0))
return 0;
if (!write_byte (configFile, theWindow->heightEverChangedByUser ? 1 : 0))
return 0;
/* ===================[ Matthew McNeill Feb 1997 ]=======================*
* write an extra piece of information to the file, this is the occupation
* number and is a bit field of the workspaces occupied by the client.
*/
if (!write_int (configFile, theWindow->occupation))
return 0;
/* ======================================================================*/
return 1;
}
/*===[ Read Window Configuration Entry ]=====================================*/
int ReadWinConfigEntry (FILE *configFile, unsigned short version,
TWMWinConfigEntry **pentry)
/* this function reads the next window configuration entry from the given file
* else it returns FALSE if none exists or there is a problem
*/
{
TWMWinConfigEntry *entry;
unsigned char byte;
int i;
*pentry = entry = (TWMWinConfigEntry *) malloc (
sizeof (TWMWinConfigEntry));
if (!*pentry)
return 0;
entry->tag = 0;
entry->client_id = NULL;
entry->window_role = NULL;
entry->class.res_name = NULL;
entry->class.res_class = NULL;
entry->wm_name = NULL;
entry->wm_command = NULL;
entry->wm_command_count = 0;
if (!read_counted_string (configFile, &entry->client_id))
goto give_up;
if (!read_counted_string (configFile, &entry->window_role))
goto give_up;
if (!entry->window_role)
{
if (!read_counted_string (configFile, &entry->class.res_name))
goto give_up;
if (!read_counted_string (configFile, &entry->class.res_class))
goto give_up;
if (!read_counted_string (configFile, &entry->wm_name))
goto give_up;
if (!read_byte (configFile, &byte))
goto give_up;
entry->wm_command_count = byte;
if (entry->wm_command_count == 0)
entry->wm_command = NULL;
else
{
entry->wm_command = (char **) malloc (entry->wm_command_count *
sizeof (char *));
if (!entry->wm_command)
goto give_up;
for (i = 0; i < entry->wm_command_count; i++)
if (!read_counted_string (configFile, &entry->wm_command[i]))
goto give_up;
}
}
if (!read_byte (configFile, &byte))
goto give_up;
entry->iconified = byte;
if (!read_byte (configFile, &byte))
goto give_up;
entry->icon_info_present = byte;
if (entry->icon_info_present)
{
if (!read_short (configFile, (short *) &entry->icon_x))
goto give_up;
if (!read_short (configFile, (short *) &entry->icon_y))
goto give_up;
}
if (!read_short (configFile, (short *) &entry->x))
goto give_up;
if (!read_short (configFile, (short *) &entry->y))
goto give_up;
if (!read_ushort (configFile, &entry->width))
goto give_up;
if (!read_ushort (configFile, &entry->height))
goto give_up;
if (version > 1)
{
if (!read_byte (configFile, &byte))
goto give_up;
entry->width_ever_changed_by_user = byte;
if (!read_byte (configFile, &byte))
goto give_up;
entry->height_ever_changed_by_user = byte;
}
else
{
entry->width_ever_changed_by_user = False;
entry->height_ever_changed_by_user = False;
}
/* ===================[ Matthew McNeill Feb 1997 ]======================= *
* read in the occupation information to restore the windows to the
* correct workspaces.
*/
if (!read_int (configFile, &entry->occupation))
goto give_up;
/* ====================================================================== */
return 1;
give_up:
if (entry->client_id)
free (entry->client_id);
if (entry->window_role)
free (entry->window_role);
if (entry->class.res_name)
free (entry->class.res_name);
if (entry->class.res_class)
free (entry->class.res_class);
if (entry->wm_name)
free (entry->wm_name);
if (entry->wm_command_count)
{
for (i = 0; i < entry->wm_command_count; i++)
if (entry->wm_command[i])
free (entry->wm_command[i]);
}
if (entry->wm_command)
free ((char *) entry->wm_command);
free ((char *) entry);
*pentry = NULL;
return 0;
}
/*===[ Read In Win Config File ]=============================================*/
void ReadWinConfigFile (char *filename)
/* this function reads the window configuration file and stores the information
* in a data structure which is returned
*/
{
FILE *configFile;
TWMWinConfigEntry *entry;
int done = 0;
unsigned short version;
configFile = fopen (filename, "rb");
if (!configFile)
return;
if (!read_ushort (configFile, &version) ||
version > SAVEFILE_VERSION)
{
done = 1;
}
while (!done)
{
if (ReadWinConfigEntry (configFile, version, &entry))
{
entry->next = winConfigHead;
winConfigHead = entry;
}
else
done = 1;
}
fclose (configFile);
}
/*===[ Get Window Configuration ]============================================*
* Matthew McNeill Feb 1997 - added extra parameter (occupation) to return
* restored occupation of the window
*/
int GetWindowConfig (TwmWindow *theWindow, short *x, short *y,
unsigned short *width, unsigned short *height,
Bool *iconified, Bool *icon_info_present,
short *icon_x, short *icon_y,
Bool *width_ever_changed_by_user,
Bool *height_ever_changed_by_user,
int *occupation) /* <== [ Matthew McNeill Feb 1997 ] == */
/* This function attempts to extract all the relevant information from the
* given window and return values via the rest of the parameters to the
* function
*/
{
char *clientId, *windowRole;
TWMWinConfigEntry *ptr;
int found = 0;
ptr = winConfigHead;
if (!ptr)
return 0;
clientId = GetClientID (theWindow->w);
windowRole = GetWindowRole (theWindow->w);
while (ptr && !found)
{
int client_id_match = (!clientId && !ptr->client_id) ||
(clientId && ptr->client_id &&
strcmp (clientId, ptr->client_id) == 0);
if (!ptr->tag && client_id_match)
{
if (windowRole || ptr->window_role)
{
found = (windowRole && ptr->window_role &&
strcmp (windowRole, ptr->window_role) == 0);
}
else
{
/*
* Compare WM_CLASS + only compare WM_NAME if the
* WM_NAME in the saved file is non-NULL. If the
* WM_NAME in the saved file is NULL, this means that
* the client changed the value of WM_NAME during the
* session, and we can not use it as a criteria for
* our search. For example, with xmh, at save time
* the window name might be "xmh: folderY". However,
* if xmh does not properly restore state when it is
* restarted, the initial window name might be
* "xmh: folderX". This would cause the window manager
* to fail in finding the saved window configuration.
* The best we can do is ignore WM_NAME if its value
* changed in the previous session.
*/
if (strcmp (theWindow->class.res_name,
ptr->class.res_name) == 0 &&
strcmp (theWindow->class.res_class,
ptr->class.res_class) == 0 &&
(ptr->wm_name == NULL ||
strcmp (theWindow->name, ptr->wm_name) == 0))
{
if (clientId)
{
/*
* If a client ID was present, we should not check
* WM_COMMAND because Xt will put a -xtsessionID arg
* on the command line.
*/
found = 1;
}
else
{
/*
* For non-XSMP clients, also check WM_COMMAND.
*/
char **wm_command = NULL;
int wm_command_count = 0, i;
XGetCommand (dpy, theWindow->w,
&wm_command, &wm_command_count);
if (wm_command_count == ptr->wm_command_count)
{
for (i = 0; i < wm_command_count; i++)
if (strcmp (wm_command[i],
ptr->wm_command[i]) != 0)
break;
if (i == wm_command_count)
found = 1;
}
}
}
}
}
if (!found)
ptr = ptr->next;
}
if (found)
{
*x = ptr->x;
*y = ptr->y;
*width = ptr->width;
*height = ptr->height;
*iconified = ptr->iconified;
*icon_info_present = ptr->icon_info_present;
*width_ever_changed_by_user = ptr->width_ever_changed_by_user;
*height_ever_changed_by_user = ptr->height_ever_changed_by_user;
if (*icon_info_present)
{
*icon_x = ptr->icon_x;
*icon_y = ptr->icon_y;
}
*occupation = ptr->occupation; /* <== [ Matthew McNeill Feb 1997 ] == */
ptr->tag = 1;
}
else
*iconified = 0;
if (clientId)
XFree (clientId);
if (windowRole)
XFree (windowRole);
return found;
}
/*===[ Unique Filename Generator ]===========================================*/
static char *unique_filename (char *path, char *prefix)
/* this function attempts to allocate a temporary filename to store the
* information of the windows
*/
{
#ifndef X_NOT_POSIX
return ((char *) tempnam (path, prefix));
#else
char tempFile[PATH_MAX];
char *tmp;
sprintf (tempFile, "%s/%sXXXXXX", path, prefix);
tmp = (char *) mktemp (tempFile);
if (tmp)
{
char *ptr = (char *) malloc (strlen (tmp) + 1);
strcpy (ptr, tmp);
return (ptr);
}
else
return (NULL);
#endif
}
/*===[ SAVE WINDOW INFORMATION ]=============================================*/
#ifndef PATH_MAX
# define PATH_MAX 1023
#endif
void SaveYourselfPhase2CB (SmcConn smcCon, SmPointer clientData)
/* this is where all the work is done in saving the state of the windows.
* it is not done in Phase One because phase one is used for the other clients
* to make sure that all the property information on their windows is correct
* and up to date
*/
{
int scrnum;
ScreenInfo *theScreen;
TwmWindow *theWindow;
char *clientId, *windowRole;
FILE *configFile = NULL;
char *path;
char *filename = NULL;
Bool success = False;
SmProp prop1, prop2, prop3, *props[3];
SmPropValue prop1val, prop2val, prop3val;
char discardCommand[PATH_MAX + 4];
int numVals, i;
static int first_time = 1;
if (first_time)
{
char userId[20];
char hint = SmRestartIfRunning;
prop1.name = SmProgram;
prop1.type = SmARRAY8;
prop1.num_vals = 1;
prop1.vals = &prop1val;
prop1val.value = Argv[0];
prop1val.length = strlen (Argv[0]);
sprintf (userId, "%d", getuid());
prop2.name = SmUserID;
prop2.type = SmARRAY8;
prop2.num_vals = 1;
prop2.vals = &prop2val;
prop2val.value = (SmPointer) userId;
prop2val.length = strlen (userId);
prop3.name = SmRestartStyleHint;
prop3.type = SmCARD8;
prop3.num_vals = 1;
prop3.vals = &prop3val;
prop3val.value = (SmPointer) &hint;
prop3val.length = 1;
props[0] = &prop1;
props[1] = &prop2;
props[2] = &prop3;
SmcSetProperties (smcCon, 3, props);
first_time = 0;
}
path = getenv ("SM_SAVE_DIR");
if (!path)
{
path = getenv ("HOME");
if (!path)
path = ".";
}
/*==============[ Matthew McNeill Feb 1997 ]==============*
* changed the unique name to CTWM rather than TWM
* this is tidier and more functional and prevents
* TWM picking up CTWM config files. The format is
* no longer the same since the new format supports
* virtaul workspaces.
*========================================================*/
if ((filename = unique_filename (path, ".ctwm")) == NULL)
goto bad;
if (!(configFile = fopen (filename, "wb"))) /* wb = write bytes ? */
goto bad;
if (!write_ushort (configFile, SAVEFILE_VERSION))
goto bad;
success = True;
for (scrnum = 0; scrnum < NumScreens && success; scrnum++)
{
if (ScreenList[scrnum] != NULL)
{
theScreen = ScreenList[scrnum];
theWindow = theScreen->FirstWindow;
while (theWindow && success)
{
clientId = GetClientID (theWindow->w);
windowRole = GetWindowRole (theWindow->w);
if (!WriteWinConfigEntry (configFile, theWindow,
clientId, windowRole))
success = False;
if (clientId)
XFree (clientId);
if (windowRole)
XFree (windowRole);
theWindow = theWindow->next;
}
}
}
prop1.name = SmRestartCommand;
prop1.type = SmLISTofARRAY8;
prop1.vals = (SmPropValue *) malloc (
(Argc + 4) * sizeof (SmPropValue));
if (!prop1.vals)
{
success = False;
goto bad;
}
numVals = 0;
for (i = 0; i < Argc; i++)
{
if (strcmp (Argv[i], "-clientId") == 0 ||
strcmp (Argv[i], "-restore") == 0)
{
i++;
}
else
{
prop1.vals[numVals].value = (SmPointer) Argv[i];
prop1.vals[numVals++].length = strlen (Argv[i]);
}
}
prop1.vals[numVals].value = (SmPointer) "-clientId";
prop1.vals[numVals++].length = 9;
prop1.vals[numVals].value = (SmPointer) twm_clientId;
prop1.vals[numVals++].length = strlen (twm_clientId);
prop1.vals[numVals].value = (SmPointer) "-restore";
prop1.vals[numVals++].length = 8;
prop1.vals[numVals].value = (SmPointer) filename;
prop1.vals[numVals++].length = strlen (filename);
prop1.num_vals = numVals;
sprintf (discardCommand, "rm %s", filename);
prop2.name = SmDiscardCommand;
prop2.type = SmARRAY8;
prop2.num_vals = 1;
prop2.vals = &prop2val;
prop2val.value = (SmPointer) discardCommand;
prop2val.length = strlen (discardCommand);
props[0] = &prop1;
props[1] = &prop2;
SmcSetProperties (smcCon, 2, props);
free ((char *) prop1.vals);
bad:
SmcSaveYourselfDone (smcCon, success);
sent_save_done = 1;
if (configFile)
fclose (configFile);
if (filename)
free (filename);
}
/*===[ Save Yourself SM CallBack ]===========================================*/
void SaveYourselfCB (SmcConn smcCon, SmPointer clientData,
int saveType, Bool shutdown, int interactStyle, Bool fast)
/* this procedure is called by the session manager when requesting the
* window manager to save its status, ie all the window configurations
*/
{
if (!SmcRequestSaveYourselfPhase2 (smcCon, SaveYourselfPhase2CB, NULL))
{
SmcSaveYourselfDone (smcCon, False);
sent_save_done = 1;
}
else
sent_save_done = 0;
}
/*===[ Die SM Call Back ]====================================================*/
void DieCB (SmcConn smcCon, SmPointer clientData)
/* this procedure is called by the session manager when requesting that the
* application shut istelf down
*/
{
SmcCloseConnection (smcCon, 0, NULL);
XtRemoveInput (iceInputId);
Done(0);
}
/*===[ Save Complete SM Call Back ]==========================================*/
void SaveCompleteCB (SmcConn smcCon, SmPointer clientData)
/* This function is called to say that the save has been completed and that
* the program can continue its operation
*/
{
;
}
/*===[ Shutdown Cancelled SM Call Back ]=====================================*/
void ShutdownCancelledCB (SmcConn smcCon, SmPointer clientData)
{
if (!sent_save_done)
{
SmcSaveYourselfDone (smcCon, False);
sent_save_done = 1;
}
}
/*===[ Process ICE Message ]=================================================*/
void ProcessIceMsgProc (XtPointer client_data, int *source, XtInputId *id)
{
IceConn ice_conn = (IceConn) client_data;
IceProcessMessages (ice_conn, NULL, NULL);
}
/*===[ Connect To Session Manager ]==========================================*/
void ConnectToSessionManager (char *previous_id)
/* This procedure attempts to connect to the session manager and setup the
* interclent exchange via the Call Backs
*/
{
char errorMsg[256];
unsigned long mask;
SmcCallbacks callbacks;
IceConn iceConn;
mask = SmcSaveYourselfProcMask | SmcDieProcMask |
SmcSaveCompleteProcMask | SmcShutdownCancelledProcMask;
callbacks.save_yourself.callback = SaveYourselfCB;
callbacks.save_yourself.client_data = (SmPointer) NULL;
callbacks.die.callback = DieCB;
callbacks.die.client_data = (SmPointer) NULL;
callbacks.save_complete.callback = SaveCompleteCB;
callbacks.save_complete.client_data = (SmPointer) NULL;
callbacks.shutdown_cancelled.callback = ShutdownCancelledCB;
callbacks.shutdown_cancelled.client_data = (SmPointer) NULL;
smcConn = SmcOpenConnection (
NULL, /* use SESSION_MANAGER env */
(SmPointer) appContext,
SmProtoMajor,
SmProtoMinor,
mask,
&callbacks,
previous_id,
&twm_clientId,
256, errorMsg);
if (smcConn == NULL)
{
#ifdef DEBUG
/* == [ Matthew McNeill Feb 1997 ] == */
fprintf (stderr, "%s : Connection to session manager failed. (%s)",ProgramName, errorMsg);
#endif
return;
}
iceConn = SmcGetIceConnection (smcConn);
iceInputId = XtAppAddInput (
appContext,
IceConnectionNumber (iceConn),
(XtPointer) XtInputReadMask,
ProcessIceMsgProc,
(XtPointer) iceConn);
}
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