src/session.c

   1 /* session.c - session state handling and R6 style session management
   2  *
   3  *  Copyright (c) 1998-2003 Dan Pascu
   4  *  Copyright (c) 1998-2003 Alfredo Kojima
   5  *
   6  *  Window Maker window manager
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License along
  19  *  with this program; if not, write to the Free Software Foundation, Inc.,
  20  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  */
  22
  23 /*
  24  *
  25  * If defined(XSMP_ENABLED) and session manager is running then
  26  *      do normal stuff
  27  * else
  28  *      do pre-R6 session management stuff (save window state and relaunch)
  29  *
  30  * When doing a checkpoint:
  31  *
  32  * = Without XSMP
  33  * Open "Stop"/status Dialog
  34  * Send SAVE_YOURSELF to clients and wait for reply
  35  * Save restart info
  36  * Save state of clients
  37  *
  38  * = With XSMP
  39  * Send checkpoint request to sm
  40  *
  41  * When exiting:
  42  * -------------
  43  *
  44  * = Without XSMP
  45  *
  46  * Open "Exit Now"/status Dialog
  47  * Send SAVE_YOURSELF to clients and wait for reply
  48  * Save restart info
  49  * Save state of clients
  50  * Send DELETE to all clients
  51  * When no more clients are left or user hit "Exit Now", exit
  52  *
  53  * = With XSMP
  54  *
  55  * Send Shutdown request to session manager
  56  * if SaveYourself message received, save state of clients
  57  * if the Die message is received, exit.
  58  */
  59
  60 #include "wconfig.h"
  61
  62 #include <X11/Xlib.h>
  63 #include <X11/Xutil.h>
  64
  65 #include <stdlib.h>
  66 #include <stdio.h>
  67 #include <string.h>
  68 #include <strings.h>
  69 #include <unistd.h>
  70 #include <time.h>
  71
  72 #include "WindowMaker.h"
  73 #include "screen.h"
  74 #include "window.h"
  75 #include "client.h"
  76 #include "session.h"
  77 #include "framewin.h"
  78 #include "workspace.h"
  79 #include "main.h"
  80 #include "properties.h"
  81 #include "application.h"
  82 #include "appicon.h"
  83 #include "dock.h"
  84 #include "misc.h"
  85
  86 #include <WINGs/WUtil.h>
  87
  88
  89 static WMPropList *sApplications = NULL;
  90 static WMPropList *sCommand;
  91 static WMPropList *sName;
  92 static WMPropList *sHost;
  93 static WMPropList *sWorkspace;
  94 static WMPropList *sShaded;
  95 static WMPropList *sMiniaturized;
  96 static WMPropList *sHidden;
  97 static WMPropList *sGeometry;
  98 static WMPropList *sShortcutMask;
  99
 100 static WMPropList *sDock;
 101 static WMPropList *sYes, *sNo;
 102
 103 static void make_keys(void)
 104 {
 105         if (sApplications != NULL)
 106                 return;
 107
 108         sApplications = WMCreatePLString("Applications");
 109         sCommand = WMCreatePLString("Command");
 110         sName = WMCreatePLString("Name");
 111         sHost = WMCreatePLString("Host");
 112         sWorkspace = WMCreatePLString("Workspace");
 113         sShaded = WMCreatePLString("Shaded");
 114         sMiniaturized = WMCreatePLString("Miniaturized");
 115         sHidden = WMCreatePLString("Hidden");
 116         sGeometry = WMCreatePLString("Geometry");
 117         sDock = WMCreatePLString("Dock");
 118         sShortcutMask = WMCreatePLString("ShortcutMask");
 119
 120         sYes = WMCreatePLString("Yes");
 121         sNo = WMCreatePLString("No");
 122 }
 123
 124 static int getBool(WMPropList * value)
 125 {
 126         char *val;
 127
 128         if (!WMIsPLString(value)) {
 129                 return 0;
 130         }
 131         if (!(val = WMGetFromPLString(value))) {
 132                 return 0;
 133         }
 134
 135         if ((val[1] == '\0' && (val[0] == 'y' || val[0] == 'Y'))
 136             || strcasecmp(val, "YES") == 0) {
 137
 138                 return 1;
 139         } else if ((val[1] == '\0' && (val[0] == 'n' || val[0] == 'N'))
 140                    || strcasecmp(val, "NO") == 0) {
 141                 return 0;
 142         } else {
 143                 int i;
 144                 if (sscanf(val, "%i", &i) == 1) {
 145                         return (i != 0);
 146                 } else {
 147                         wwarning(_("can't convert \"%s\" to boolean"), val);
 148                         return 0;
 149                 }
 150         }
 151 }
 152
 153 static unsigned getInt(WMPropList * value)
 154 {
 155         char *val;
 156         unsigned n;
 157
 158         if (!WMIsPLString(value))
 159                 return 0;
 160         val = WMGetFromPLString(value);
 161         if (!val)
 162                 return 0;
 163         if (sscanf(val, "%u", &n) != 1)
 164                 return 0;
 165
 166         return n;
 167 }
 168
 169 static WMPropList *makeWindowState(WWindow * wwin, WApplication * wapp)
 170 {
 171         WScreen *scr = wwin->screen_ptr;
 172         Window win;
 173         int i;
 174         unsigned mask;
 175         char *class, *instance, *command = NULL, buffer[512];
 176         WMPropList *win_state, *cmd, *name, *workspace;
 177         WMPropList *shaded, *miniaturized, *hidden, *geometry;
 178         WMPropList *dock, *shortcut;
 179
 180         if (wwin->orig_main_window != None && wwin->orig_main_window != wwin->client_win)
 181                 win = wwin->orig_main_window;
 182         else
 183                 win = wwin->client_win;
 184
 185         command = GetCommandForWindow(win);
 186         if (!command)
 187                 return NULL;
 188
 189         if (PropGetWMClass(win, &class, &instance)) {
 190                 if (class && instance)
 191                         snprintf(buffer, sizeof(buffer), "%s.%s", instance, class);
 192                 else if (instance)
 193                         snprintf(buffer, sizeof(buffer), "%s", instance);
 194                 else if (class)
 195                         snprintf(buffer, sizeof(buffer), ".%s", class);
 196                 else
 197                         snprintf(buffer, sizeof(buffer), ".");
 198
 199                 name = WMCreatePLString(buffer);
 200                 cmd = WMCreatePLString(command);
 201                 workspace = WMCreatePLString(scr->workspaces[wwin->frame->workspace]->name);
 202
 203                 shaded = wwin->flags.shaded ? sYes : sNo;
 204                 miniaturized = wwin->flags.miniaturized ? sYes : sNo;
 205                 hidden = wwin->flags.hidden ? sYes : sNo;
 206                 snprintf(buffer, sizeof(buffer), "%ix%i+%i+%i",
 207                          wwin->client.width, wwin->client.height, wwin->frame_x, wwin->frame_y);
 208                 geometry = WMCreatePLString(buffer);
 209
 210                 for (mask = 0, i = 0; i < MAX_WINDOW_SHORTCUTS; i++) {
 211                         if (scr->shortcutWindows[i] != NULL &&
 212                             WMGetFirstInArray(scr->shortcutWindows[i], wwin) != WANotFound)
 213                                 mask |= 1 << i;
 214                 }
 215
 216                 snprintf(buffer, sizeof(buffer), "%u", mask);
 217                 shortcut = WMCreatePLString(buffer);
 218
 219                 win_state = WMCreatePLDictionary(sName, name,
 220                                                  sCommand, cmd,
 221                                                  sWorkspace, workspace,
 222                                                  sShaded, shaded,
 223                                                  sMiniaturized, miniaturized,
 224                                                  sHidden, hidden,
 225                                                  sShortcutMask, shortcut, sGeometry, geometry, NULL);
 226
 227                 WMReleasePropList(name);
 228                 WMReleasePropList(cmd);
 229                 WMReleasePropList(workspace);
 230                 WMReleasePropList(geometry);
 231                 WMReleasePropList(shortcut);
 232                 if (wapp && wapp->app_icon && wapp->app_icon->dock) {
 233                         int i;
 234                         char *name = NULL;
 235                         if (wapp->app_icon->dock == scr->dock)
 236                                 name = "Dock";
 237
 238                         /* Try the clips */
 239                         if (name == NULL) {
 240                                 for (i = 0; i < scr->workspace_count; i++)
 241                                         if (scr->workspaces[i]->clip == wapp->app_icon->dock)
 242                                                 break;
 243                                 if (i < scr->workspace_count)
 244                                         name = scr->workspaces[i]->name;
 245                         }
 246                         /* Try the drawers */
 247                         if (name == NULL) {
 248                                 WDrawerChain *dc;
 249                                 for (dc = scr->drawers; dc != NULL; dc = dc->next) {
 250                                         if (dc->adrawer == wapp->app_icon->dock)
 251                                                 break;
 252                                 }
 253                                 assert(dc != NULL);
 254                                 name = dc->adrawer->icon_array[0]->wm_instance;
 255                         }
 256                         dock = WMCreatePLString(name);
 257                         WMPutInPLDictionary(win_state, sDock, dock);
 258                         WMReleasePropList(dock);
 259                 }
 260         } else {
 261                 win_state = NULL;
 262         }
 263
 264         if (instance)
 265                 free(instance);
 266         if (class)
 267                 free(class);
 268         if (command)
 269                 wfree(command);
 270
 271         return win_state;
 272 }
 273
 274 void wSessionSaveState(WScreen * scr)
 275 {
 276         WWindow *wwin = scr->focused_window;
 277         WMPropList *win_info, *wks;
 278         WMPropList *list = NULL;
 279         WMArray *wapp_list = NULL;
 280
 281         make_keys();
 282
 283         if (!scr->session_state) {
 284                 scr->session_state = WMCreatePLDictionary(NULL, NULL);
 285                 if (!scr->session_state)
 286                         return;
 287         }
 288
 289         list = WMCreatePLArray(NULL);
 290
 291         wapp_list = WMCreateArray(16);
 292
 293         while (wwin) {
 294                 WApplication *wapp = wApplicationOf(wwin->main_window);
 295                 Window appId = wwin->orig_main_window;
 296
 297                 if ((wwin->transient_for == None || wwin->transient_for == wwin->screen_ptr->root_win)
 298                     && (WMGetFirstInArray(wapp_list, (void *)appId) == WANotFound
 299                         || WFLAGP(wwin, shared_appicon))
 300                     && !WFLAGP(wwin, dont_save_session)) {
 301                         /* A entry for this application was not yet saved. Save one. */
 302                         if ((win_info = makeWindowState(wwin, wapp)) != NULL) {
 303                                 WMAddToPLArray(list, win_info);
 304                                 WMReleasePropList(win_info);
 305                                 /* If we were succesful in saving the info for this window
 306                                  * add the application the window belongs to, to the
 307                                  * application list, so no multiple entries for the same
 308                                  * application are saved.
 309                                  */
 310                                 WMAddToArray(wapp_list, (void *)appId);
 311                         }
 312                 }
 313                 wwin = wwin->prev;
 314         }
 315         WMRemoveFromPLDictionary(scr->session_state, sApplications);
 316         WMPutInPLDictionary(scr->session_state, sApplications, list);
 317         WMReleasePropList(list);
 318
 319         wks = WMCreatePLString(scr->workspaces[scr->current_workspace]->name);
 320         WMPutInPLDictionary(scr->session_state, sWorkspace, wks);
 321         WMReleasePropList(wks);
 322
 323         WMFreeArray(wapp_list);
 324 }
 325
 326 void wSessionClearState(WScreen * scr)
 327 {
 328         make_keys();
 329
 330         if (!scr->session_state)
 331                 return;
 332
 333         WMRemoveFromPLDictionary(scr->session_state, sApplications);
 334         WMRemoveFromPLDictionary(scr->session_state, sWorkspace);
 335 }
 336
 337 static pid_t execCommand(WScreen *scr, char *command)
 338 {
 339         pid_t pid;
 340         char **argv;
 341         int argc;
 342
 343         wtokensplit(command, &argv, &argc);
 344
 345         if (!argc) {
 346                 return 0;
 347         }
 348
 349         if ((pid = fork()) == 0) {
 350                 char **args;
 351                 int i;
 352
 353                 SetupEnvironment(scr);
 354
 355                 args = malloc(sizeof(char *) * (argc + 1));
 356                 if (!args)
 357                         exit(111);
 358                 for (i = 0; i < argc; i++) {
 359                         args[i] = argv[i];
 360                 }
 361                 args[argc] = NULL;
 362                 execvp(argv[0], args);
 363                 exit(111);
 364         }
 365         while (argc > 0)
 366                 wfree(argv[--argc]);
 367         wfree(argv);
 368         return pid;
 369 }
 370
 371 static WSavedState *getWindowState(WScreen * scr, WMPropList * win_state)
 372 {
 373         WSavedState *state = wmalloc(sizeof(WSavedState));
 374         WMPropList *value;
 375         char *tmp;
 376         unsigned mask;
 377         int i;
 378
 379         state->workspace = -1;
 380         value = WMGetFromPLDictionary(win_state, sWorkspace);
 381         if (value && WMIsPLString(value)) {
 382                 tmp = WMGetFromPLString(value);
 383                 if (sscanf(tmp, "%i", &state->workspace) != 1) {
 384                         state->workspace = -1;
 385                         for (i = 0; i < scr->workspace_count; i++) {
 386                                 if (strcmp(scr->workspaces[i]->name, tmp) == 0) {
 387                                         state->workspace = i;
 388                                         break;
 389                                 }
 390                         }
 391                 } else {
 392                         state->workspace--;
 393                 }
 394         }
 395         if ((value = WMGetFromPLDictionary(win_state, sShaded)) != NULL)
 396                 state->shaded = getBool(value);
 397         if ((value = WMGetFromPLDictionary(win_state, sMiniaturized)) != NULL)
 398                 state->miniaturized = getBool(value);
 399         if ((value = WMGetFromPLDictionary(win_state, sHidden)) != NULL)
 400                 state->hidden = getBool(value);
 401         if ((value = WMGetFromPLDictionary(win_state, sShortcutMask)) != NULL) {
 402                 mask = getInt(value);
 403                 state->window_shortcuts = mask;
 404         }
 405
 406         value = WMGetFromPLDictionary(win_state, sGeometry);
 407         if (value && WMIsPLString(value)) {
 408                 if (!(sscanf(WMGetFromPLString(value), "%ix%i+%i+%i",
 409                              &state->w, &state->h, &state->x, &state->y) == 4 && (state->w > 0 && state->h > 0))) {
 410                         state->w = 0;
 411                         state->h = 0;
 412                 }
 413         }
 414
 415         return state;
 416 }
 417
 418 #define SAME(x, y) (((x) && (y) && !strcmp((x), (y))) || (!(x) && !(y)))
 419
 420 void wSessionRestoreState(WScreen *scr)
 421 {
 422         WSavedState *state;
 423         char *instance, *class, *command;
 424         WMPropList *win_info, *apps, *cmd, *value;
 425         pid_t pid;
 426         int i, count;
 427         WDock *dock;
 428         WAppIcon *btn = NULL;
 429         int j, n, found;
 430         char *tmp;
 431
 432         make_keys();
 433
 434         if (!scr->session_state)
 435                 return;
 436
 437         WMPLSetCaseSensitive(True);
 438
 439         apps = WMGetFromPLDictionary(scr->session_state, sApplications);
 440         if (!apps)
 441                 return;
 442
 443         count = WMGetPropListItemCount(apps);
 444         if (count == 0)
 445                 return;
 446
 447         for (i = 0; i < count; i++) {
 448                 win_info = WMGetFromPLArray(apps, i);
 449
 450                 cmd = WMGetFromPLDictionary(win_info, sCommand);
 451                 if (!cmd || !WMIsPLString(cmd) || !(command = WMGetFromPLString(cmd))) {
 452                         continue;
 453                 }
 454
 455                 value = WMGetFromPLDictionary(win_info, sName);
 456                 if (!value)
 457                         continue;
 458
 459                 ParseWindowName(value, &instance, &class, "session");
 460                 if (!instance && !class)
 461                         continue;
 462
 463                 state = getWindowState(scr, win_info);
 464
 465                 dock = NULL;
 466                 value = WMGetFromPLDictionary(win_info, sDock);
 467                 if (value && WMIsPLString(value) && (tmp = WMGetFromPLString(value)) != NULL) {
 468                         if (sscanf(tmp, "%i", &n) != 1) {
 469                                 if (!strcasecmp(tmp, "DOCK"))
 470                                         dock = scr->dock;
 471
 472                                 /* Try the clips */
 473                                 if (dock == NULL) {
 474                                         for (j = 0; j < scr->workspace_count; j++) {
 475                                                 if (strcmp(scr->workspaces[j]->name, tmp) == 0) {
 476                                                         dock = scr->workspaces[j]->clip;
 477                                                         break;
 478                                                 }
 479                                         }
 480                                 }
 481                                 if (dock == NULL) // Try the drawers
 482                                 {
 483                                         WDrawerChain *dc;
 484                                         for (dc = scr->drawers; dc != NULL; dc = dc->next)
 485                                         {
 486                                                 if (strcmp(dc->adrawer->icon_array[0]->wm_instance, tmp) == 0)
 487                                                 {
 488                                                         dock = dc->adrawer;
 489                                                         break;
 490                                                 }
 491                                         }
 492                                 }
 493                         } else {
 494                                 if (n == 0) {
 495                                         dock = scr->dock;
 496                                 } else if (n > 0 && n <= scr->workspace_count) {
 497                                         dock = scr->workspaces[n - 1]->clip;
 498                                 }
 499                         }
 500                 }
 501
 502                 found = 0;
 503                 if (dock != NULL) {
 504                         for (j = 0; j < dock->max_icons; j++) {
 505                                 btn = dock->icon_array[j];
 506                                 if (btn && SAME(instance, btn->wm_instance) &&
 507                                     SAME(class, btn->wm_class) && SAME(command, btn->command) && !btn->launching) {
 508                                         found = 1;
 509                                         break;
 510                                 }
 511                         }
 512                 }
 513
 514                 if (found) {
 515                         wDockLaunchWithState(btn, state);
 516                 } else if ((pid = execCommand(scr, command)) > 0) {
 517                         wWindowAddSavedState(instance, class, command, pid, state);
 518                 } else {
 519                         wfree(state);
 520                 }
 521
 522                 if (instance)
 523                         wfree(instance);
 524                 if (class)
 525                         wfree(class);
 526         }
 527         /* clean up */
 528         WMPLSetCaseSensitive(False);
 529 }
 530
 531 void wSessionRestoreLastWorkspace(WScreen * scr)
 532 {
 533         WMPropList *wks;
 534         int w;
 535         char *value;
 536
 537         make_keys();
 538
 539         if (!scr->session_state)
 540                 return;
 541
 542         WMPLSetCaseSensitive(True);
 543
 544         wks = WMGetFromPLDictionary(scr->session_state, sWorkspace);
 545         if (!wks || !WMIsPLString(wks))
 546                 return;
 547
 548         value = WMGetFromPLString(wks);
 549
 550         if (!value)
 551                 return;
 552
 553         /* clean up */
 554         WMPLSetCaseSensitive(False);
 555
 556         /* Get the workspace number for the workspace name */
 557         w = wGetWorkspaceNumber(scr, value);
 558
 559         if (w != scr->current_workspace && w < scr->workspace_count)
 560                 wWorkspaceChange(scr, w);
 561 }