src/startup.c

   1 /*
   2  *  Window Maker window manager
   3  *
   4  *  Copyright (c) 1997-2003 Alfredo K. Kojima
   5  *  Copyright (c) 1998-2003 Dan Pascu
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  20  *  USA.
  21  */
  22
  23 #include "wconfig.h"
  24
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <unistd.h>
  28 #include <string.h>
  29 #include <errno.h>
  30 #include <signal.h>
  31 #include <sys/wait.h>
  32 #ifdef __FreeBSD__
  33 #include <sys/signal.h>
  34 #endif
  35
  36 #include <X11/Xlib.h>
  37 #include <X11/Xresource.h>
  38 #include <X11/Xutil.h>
  39 #include <X11/cursorfont.h>
  40 #include <X11/Xproto.h>
  41 #include <X11/keysym.h>
  42 #ifdef SHAPE
  43 #include <X11/extensions/shape.h>
  44 #endif
  45 #ifdef KEEP_XKB_LOCK_STATUS
  46 #include <X11/XKBlib.h>
  47 #endif
  48
  49 #include "WindowMaker.h"
  50 #include "GNUstep.h"
  51 #include "texture.h"
  52 #include "screen.h"
  53 #include "window.h"
  54 #include "actions.h"
  55 #include "client.h"
  56 #include "funcs.h"
  57 #include "dock.h"
  58 #include "workspace.h"
  59 #include "keybind.h"
  60 #include "framewin.h"
  61 #include "session.h"
  62 #include "defaults.h"
  63 #include "properties.h"
  64 #include "dialog.h"
  65 #include "wmspec.h"
  66 #ifdef XDND
  67 #include "xdnd.h"
  68 #endif
  69
  70 #include "xutil.h"
  71
  72 /* for SunOS */
  73 #ifndef SA_RESTART
  74 # define SA_RESTART 0
  75 #endif
  76
  77 /* Just in case, for weirdo systems */
  78 #ifndef SA_NODEFER
  79 # define SA_NODEFER 0
  80 #endif
  81
  82 /****** Global Variables ******/
  83
  84 extern WPreferences wPreferences;
  85
  86 extern WDDomain *WDWindowMaker;
  87 extern WDDomain *WDRootMenu;
  88 extern WDDomain *WDWindowAttributes;
  89
  90 extern WShortKey wKeyBindings[WKBD_LAST];
  91
  92 extern int wScreenCount;
  93
  94 #ifdef SHAPE
  95 extern Bool wShapeSupported;
  96 extern int wShapeEventBase;
  97 #endif
  98
  99 #ifdef KEEP_XKB_LOCK_STATUS
 100 extern Bool wXkbSupported;
 101 extern int wXkbEventBase;
 102 #endif
 103
 104 /* contexts */
 105 extern XContext wWinContext;
 106 extern XContext wAppWinContext;
 107 extern XContext wStackContext;
 108 extern XContext wVEdgeContext;
 109
 110 /* atoms */
 111 extern Atom _XA_WM_STATE;
 112 extern Atom _XA_WM_CHANGE_STATE;
 113 extern Atom _XA_WM_PROTOCOLS;
 114 extern Atom _XA_WM_TAKE_FOCUS;
 115 extern Atom _XA_WM_DELETE_WINDOW;
 116 extern Atom _XA_WM_SAVE_YOURSELF;
 117 extern Atom _XA_WM_CLIENT_LEADER;
 118 extern Atom _XA_WM_COLORMAP_WINDOWS;
 119 extern Atom _XA_WM_COLORMAP_NOTIFY;
 120
 121 extern Atom _XA_GNUSTEP_WM_ATTR;
 122
 123 extern Atom _XA_WINDOWMAKER_MENU;
 124 extern Atom _XA_WINDOWMAKER_WM_PROTOCOLS;
 125 extern Atom _XA_WINDOWMAKER_STATE;
 126 extern Atom _XA_WINDOWMAKER_WM_FUNCTION;
 127 extern Atom _XA_WINDOWMAKER_NOTICEBOARD;
 128 extern Atom _XA_WINDOWMAKER_COMMAND;
 129 extern Atom _XA_WINDOWMAKER_ICON_SIZE;
 130 extern Atom _XA_WINDOWMAKER_ICON_TILE;
 131
 132 extern Atom _XA_GNUSTEP_WM_MINIATURIZE_WINDOW;
 133 extern Atom _XA_GNUSTEP_TITLEBAR_STATE;
 134
 135 extern Atom _XA_WM_IGNORE_FOCUS_EVENTS;
 136
 137 /* cursors */
 138 extern Cursor wCursor[WCUR_LAST];
 139
 140 #ifndef HAVE_INOTIFY
 141 /* special flags */
 142 extern char WDelayedActionSet;
 143 #endif
 144
 145 /***** Local *****/
 146
 147 static WScreen **wScreen = NULL;
 148
 149 static unsigned int _NumLockMask = 0;
 150 static unsigned int _ScrollLockMask = 0;
 151
 152 static void manageAllWindows(WScreen * scr, int crashed);
 153
 154 extern void NotifyDeadProcess(pid_t pid, unsigned char status);
 155
 156 static int catchXError(Display * dpy, XErrorEvent * error)
 157 {
 158         char buffer[MAXLINE];
 159
 160         /* ignore some errors */
 161         if (error->resourceid != None
 162             && ((error->error_code == BadDrawable && error->request_code == X_GetGeometry)
 163                 || (error->error_code == BadMatch && (error->request_code == X_SetInputFocus))
 164                 || (error->error_code == BadWindow)
 165                 /*
 166                    && (error->request_code == X_GetWindowAttributes
 167                    || error->request_code == X_SetInputFocus
 168                    || error->request_code == X_ChangeWindowAttributes
 169                    || error->request_code == X_GetProperty
 170                    || error->request_code == X_ChangeProperty
 171                    || error->request_code == X_QueryTree
 172                    || error->request_code == X_GrabButton
 173                    || error->request_code == X_UngrabButton
 174                    || error->request_code == X_SendEvent
 175                    || error->request_code == X_ConfigureWindow))
 176                  */
 177                 || (error->request_code == X_InstallColormap))) {
 178                 return 0;
 179         }
 180         FormatXError(dpy, error, buffer, MAXLINE);
 181         wwarning(_("internal X error: %s\n"), buffer);
 182         return -1;
 183 }
 184
 185 /*
 186  *----------------------------------------------------------------------
 187  * handleXIO-
 188  *      Handle X shutdowns and other stuff.
 189  *----------------------------------------------------------------------
 190  */
 191 static int handleXIO(Display * xio_dpy)
 192 {
 193         dpy = NULL;
 194         Exit(0);
 195         return 0;
 196 }
 197
 198 #ifndef HAVE_INOTIFY
 199 /*
 200  *----------------------------------------------------------------------
 201  * delayedAction-
 202  *      Action to be executed after the signal() handler is exited.
 203  *----------------------------------------------------------------------
 204  */
 205 static void delayedAction(void *cdata)
 206 {
 207         if (WDelayedActionSet == 0)
 208                 return;
 209
 210         WDelayedActionSet--;
 211         /*
 212          * Make the event dispatcher do whatever it needs to do,
 213          * including handling zombie processes, restart and exit
 214          * signals.
 215          */
 216         DispatchEvent(NULL);
 217 }
 218 #endif
 219
 220 /*
 221  *----------------------------------------------------------------------
 222  * handleExitSig--
 223  *      User generated exit signal handler.
 224  *----------------------------------------------------------------------
 225  */
 226 static RETSIGTYPE handleExitSig(int sig)
 227 {
 228         sigset_t sigs;
 229
 230         sigfillset(&sigs);
 231         sigprocmask(SIG_BLOCK, &sigs, NULL);
 232
 233         if (sig == SIGUSR1) {
 234                 wwarning("got signal %i - restarting\n", sig);
 235                 SIG_WCHANGE_STATE(WSTATE_NEED_RESTART);
 236         } else if (sig == SIGUSR2) {
 237                 wwarning("got signal %i - rereading defaults\n", sig);
 238                 SIG_WCHANGE_STATE(WSTATE_NEED_REREAD);
 239         } else if (sig == SIGTERM || sig == SIGINT || sig == SIGHUP) {
 240                 wwarning("got signal %i - exiting...\n", sig);
 241                 SIG_WCHANGE_STATE(WSTATE_NEED_EXIT);
 242         }
 243
 244         sigprocmask(SIG_UNBLOCK, &sigs, NULL);
 245         DispatchEvent(NULL);    /* Dispatch events imediately. */
 246 }
 247
 248 /* Dummy signal handler */
 249 static void dummyHandler(int sig)
 250 {
 251 }
 252
 253 /*
 254  *----------------------------------------------------------------------
 255  * handleSig--
 256  *      general signal handler. Exits the program gently.
 257  *----------------------------------------------------------------------
 258  */
 259 static RETSIGTYPE handleSig(int sig)
 260 {
 261         wfatal("got signal %i\n", sig);
 262
 263         /* Setting the signal behaviour back to default and then reraising the
 264          * signal is a cleaner way to make program exit and core dump than calling
 265          * abort(), since it correctly returns from the signal handler and sets
 266          * the flags accordingly. -Dan
 267          */
 268         if (sig == SIGSEGV || sig == SIGFPE || sig == SIGBUS || sig == SIGILL || sig == SIGABRT) {
 269                 signal(sig, SIG_DFL);
 270                 kill(getpid(), sig);
 271                 return;
 272         }
 273
 274         wAbort(0);
 275 }
 276
 277 static RETSIGTYPE buryChild(int foo)
 278 {
 279         pid_t pid;
 280         int status;
 281         int save_errno = errno;
 282         sigset_t sigs;
 283
 284         sigfillset(&sigs);
 285         /* Block signals so that NotifyDeadProcess() doesn't get fux0red */
 286         sigprocmask(SIG_BLOCK, &sigs, NULL);
 287
 288         /* R.I.P. */
 289         /* If 2 or more kids exit in a small time window, before this handler gets
 290          * the chance to get invoked, the SIGCHLD signals will be merged and only
 291          * one SIGCHLD signal will be sent to us. We use a while loop to get all
 292          * exited child status because we can't count on the number of SIGCHLD
 293          * signals to know exactly how many kids have exited. -Dan
 294          */
 295         while ((pid = waitpid(-1, &status, WNOHANG)) > 0 || (pid < 0 && errno == EINTR)) {
 296                 NotifyDeadProcess(pid, WEXITSTATUS(status));
 297         }
 298
 299         sigprocmask(SIG_UNBLOCK, &sigs, NULL);
 300
 301         errno = save_errno;
 302 }
 303
 304 static void getOffendingModifiers()
 305 {
 306         int i;
 307         XModifierKeymap *modmap;
 308         KeyCode nlock, slock;
 309         static int mask_table[8] = {
 310                 ShiftMask, LockMask, ControlMask, Mod1Mask,
 311                 Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask
 312         };
 313
 314         nlock = XKeysymToKeycode(dpy, XK_Num_Lock);
 315         slock = XKeysymToKeycode(dpy, XK_Scroll_Lock);
 316
 317         /*
 318          * Find out the masks for the NumLock and ScrollLock modifiers,
 319          * so that we can bind the grabs for when they are enabled too.
 320          */
 321         modmap = XGetModifierMapping(dpy);
 322
 323         if (modmap != NULL && modmap->max_keypermod > 0) {
 324                 for (i = 0; i < 8 * modmap->max_keypermod; i++) {
 325                         if (modmap->modifiermap[i] == nlock && nlock != 0)
 326                                 _NumLockMask = mask_table[i / modmap->max_keypermod];
 327                         else if (modmap->modifiermap[i] == slock && slock != 0)
 328                                 _ScrollLockMask = mask_table[i / modmap->max_keypermod];
 329                 }
 330         }
 331
 332         if (modmap)
 333                 XFreeModifiermap(modmap);
 334 }
 335
 336 #ifdef NUMLOCK_HACK
 337 void
 338 wHackedGrabKey(int keycode, unsigned int modifiers,
 339                Window grab_window, Bool owner_events, int pointer_mode, int keyboard_mode)
 340 {
 341         if (modifiers == AnyModifier)
 342                 return;
 343
 344         /* grab all combinations of the modifier with CapsLock, NumLock and
 345          * ScrollLock. How much memory/CPU does such a monstrosity consume
 346          * in the server?
 347          */
 348         if (_NumLockMask)
 349                 XGrabKey(dpy, keycode, modifiers | _NumLockMask,
 350                          grab_window, owner_events, pointer_mode, keyboard_mode);
 351         if (_ScrollLockMask)
 352                 XGrabKey(dpy, keycode, modifiers | _ScrollLockMask,
 353                          grab_window, owner_events, pointer_mode, keyboard_mode);
 354         if (_NumLockMask && _ScrollLockMask)
 355                 XGrabKey(dpy, keycode, modifiers | _NumLockMask | _ScrollLockMask,
 356                          grab_window, owner_events, pointer_mode, keyboard_mode);
 357         if (_NumLockMask)
 358                 XGrabKey(dpy, keycode, modifiers | _NumLockMask | LockMask,
 359                          grab_window, owner_events, pointer_mode, keyboard_mode);
 360         if (_ScrollLockMask)
 361                 XGrabKey(dpy, keycode, modifiers | _ScrollLockMask | LockMask,
 362                          grab_window, owner_events, pointer_mode, keyboard_mode);
 363         if (_NumLockMask && _ScrollLockMask)
 364                 XGrabKey(dpy, keycode, modifiers | _NumLockMask | _ScrollLockMask | LockMask,
 365                          grab_window, owner_events, pointer_mode, keyboard_mode);
 366         /* phew, I guess that's all, right? */
 367 }
 368 #endif
 369
 370 void
 371 wHackedGrabButton(unsigned int button, unsigned int modifiers,
 372                   Window grab_window, Bool owner_events,
 373                   unsigned int event_mask, int pointer_mode, int keyboard_mode, Window confine_to, Cursor cursor)
 374 {
 375         XGrabButton(dpy, button, modifiers, grab_window, owner_events,
 376                     event_mask, pointer_mode, keyboard_mode, confine_to, cursor);
 377
 378         if (modifiers == AnyModifier)
 379                 return;
 380
 381         XGrabButton(dpy, button, modifiers | LockMask, grab_window, owner_events,
 382                     event_mask, pointer_mode, keyboard_mode, confine_to, cursor);
 383
 384 #ifdef NUMLOCK_HACK
 385         /* same as above, but for mouse buttons */
 386         if (_NumLockMask)
 387                 XGrabButton(dpy, button, modifiers | _NumLockMask,
 388                             grab_window, owner_events, event_mask, pointer_mode,
 389                             keyboard_mode, confine_to, cursor);
 390         if (_ScrollLockMask)
 391                 XGrabButton(dpy, button, modifiers | _ScrollLockMask,
 392                             grab_window, owner_events, event_mask, pointer_mode,
 393                             keyboard_mode, confine_to, cursor);
 394         if (_NumLockMask && _ScrollLockMask)
 395                 XGrabButton(dpy, button, modifiers | _ScrollLockMask | _NumLockMask,
 396                             grab_window, owner_events, event_mask, pointer_mode,
 397                             keyboard_mode, confine_to, cursor);
 398         if (_NumLockMask)
 399                 XGrabButton(dpy, button, modifiers | _NumLockMask | LockMask,
 400                             grab_window, owner_events, event_mask, pointer_mode,
 401                             keyboard_mode, confine_to, cursor);
 402         if (_ScrollLockMask)
 403                 XGrabButton(dpy, button, modifiers | _ScrollLockMask | LockMask,
 404                             grab_window, owner_events, event_mask, pointer_mode,
 405                             keyboard_mode, confine_to, cursor);
 406         if (_NumLockMask && _ScrollLockMask)
 407                 XGrabButton(dpy, button, modifiers | _ScrollLockMask | _NumLockMask | LockMask,
 408                             grab_window, owner_events, event_mask, pointer_mode,
 409                             keyboard_mode, confine_to, cursor);
 410 #endif                          /* NUMLOCK_HACK */
 411 }
 412
 413 WScreen *wScreenWithNumber(int i)
 414 {
 415         assert(i < wScreenCount);
 416
 417         return wScreen[i];
 418 }
 419
 420 WScreen *wScreenForRootWindow(Window window)
 421 {
 422         int i;
 423
 424         if (wScreenCount == 1)
 425                 return wScreen[0];
 426
 427         /*
 428          * Since the number of heads will probably be small (normally 2),
 429          * it should be faster to use this than a hash table, because
 430          * of the overhead.
 431          */
 432         for (i = 0; i < wScreenCount; i++) {
 433                 if (wScreen[i]->root_win == window) {
 434                         return wScreen[i];
 435                 }
 436         }
 437
 438         return wScreenForWindow(window);
 439 }
 440
 441 WScreen *wScreenSearchForRootWindow(Window window)
 442 {
 443         int i;
 444
 445         if (wScreenCount == 1)
 446                 return wScreen[0];
 447
 448         /*
 449          * Since the number of heads will probably be small (normally 2),
 450          * it should be faster to use this than a hash table, because
 451          * of the overhead.
 452          */
 453         for (i = 0; i < wScreenCount; i++) {
 454                 if (wScreen[i]->root_win == window) {
 455                         return wScreen[i];
 456                 }
 457         }
 458
 459         return wScreenForWindow(window);
 460 }
 461
 462 WScreen *wScreenForWindow(Window window)
 463 {
 464         XWindowAttributes attr;
 465
 466         if (wScreenCount == 1)
 467                 return wScreen[0];
 468
 469         if (XGetWindowAttributes(dpy, window, &attr)) {
 470                 return wScreenForRootWindow(attr.root);
 471         }
 472         return NULL;
 473 }
 474
 475 static char *atomNames[] = {
 476         "WM_STATE",
 477         "WM_CHANGE_STATE",
 478         "WM_PROTOCOLS",
 479         "WM_TAKE_FOCUS",
 480         "WM_DELETE_WINDOW",
 481         "WM_SAVE_YOURSELF",
 482         "WM_CLIENT_LEADER",
 483         "WM_COLORMAP_WINDOWS",
 484         "WM_COLORMAP_NOTIFY",
 485
 486         "_WINDOWMAKER_MENU",
 487         "_WINDOWMAKER_STATE",
 488         "_WINDOWMAKER_WM_PROTOCOLS",
 489         "_WINDOWMAKER_WM_FUNCTION",
 490         "_WINDOWMAKER_NOTICEBOARD",
 491         "_WINDOWMAKER_COMMAND",
 492         "_WINDOWMAKER_ICON_SIZE",
 493         "_WINDOWMAKER_ICON_TILE",
 494
 495         GNUSTEP_WM_ATTR_NAME,
 496         GNUSTEP_WM_MINIATURIZE_WINDOW,
 497         GNUSTEP_TITLEBAR_STATE,
 498
 499         "WM_IGNORE_FOCUS_EVENTS"
 500 };
 501
 502 /*
 503  *----------------------------------------------------------
 504  * StartUp--
 505  *      starts the window manager and setup global data.
 506  * Called from main() at startup.
 507  *
 508  * Side effects:
 509  * global data declared in main.c is initialized
 510  *----------------------------------------------------------
 511  */
 512 void StartUp(Bool defaultScreenOnly)
 513 {
 514         struct sigaction sig_action;
 515         int j, max;
 516         Atom atom[sizeof(atomNames) / sizeof(char *)];
 517
 518         /*
 519          * Ignore CapsLock in modifiers
 520          */
 521         ValidModMask = 0xff & ~LockMask;
 522
 523         getOffendingModifiers();
 524         /*
 525          * Ignore NumLock and ScrollLock too
 526          */
 527         ValidModMask &= ~(_NumLockMask | _ScrollLockMask);
 528
 529         memset(&wKeyBindings, 0, sizeof(wKeyBindings));
 530
 531         wWinContext = XUniqueContext();
 532         wAppWinContext = XUniqueContext();
 533         wStackContext = XUniqueContext();
 534         wVEdgeContext = XUniqueContext();
 535
 536         /*    _XA_VERSION = XInternAtom(dpy, "VERSION", False); */
 537
 538 #ifdef HAVE_XINTERNATOMS
 539         XInternAtoms(dpy, atomNames, sizeof(atomNames) / sizeof(char *), False, atom);
 540 #else
 541
 542         {
 543                 int i;
 544                 for (i = 0; i < sizeof(atomNames) / sizeof(char *); i++) {
 545                         atom[i] = XInternAtom(dpy, atomNames[i], False);
 546                 }
 547         }
 548 #endif
 549
 550         _XA_WM_STATE = atom[0];
 551         _XA_WM_CHANGE_STATE = atom[1];
 552         _XA_WM_PROTOCOLS = atom[2];
 553         _XA_WM_TAKE_FOCUS = atom[3];
 554         _XA_WM_DELETE_WINDOW = atom[4];
 555         _XA_WM_SAVE_YOURSELF = atom[5];
 556         _XA_WM_CLIENT_LEADER = atom[6];
 557         _XA_WM_COLORMAP_WINDOWS = atom[7];
 558         _XA_WM_COLORMAP_NOTIFY = atom[8];
 559
 560         _XA_WINDOWMAKER_MENU = atom[9];
 561         _XA_WINDOWMAKER_STATE = atom[10];
 562         _XA_WINDOWMAKER_WM_PROTOCOLS = atom[11];
 563         _XA_WINDOWMAKER_WM_FUNCTION = atom[12];
 564         _XA_WINDOWMAKER_NOTICEBOARD = atom[13];
 565         _XA_WINDOWMAKER_COMMAND = atom[14];
 566         _XA_WINDOWMAKER_ICON_SIZE = atom[15];
 567         _XA_WINDOWMAKER_ICON_TILE = atom[16];
 568
 569         _XA_GNUSTEP_WM_ATTR = atom[17];
 570         _XA_GNUSTEP_WM_MINIATURIZE_WINDOW = atom[18];
 571         _XA_GNUSTEP_TITLEBAR_STATE = atom[19];
 572
 573         _XA_WM_IGNORE_FOCUS_EVENTS = atom[20];
 574
 575 #ifdef XDND
 576         wXDNDInitializeAtoms();
 577 #endif
 578
 579         /* cursors */
 580         wCursor[WCUR_NORMAL] = None;    /* inherit from root */
 581         wCursor[WCUR_ROOT] = XCreateFontCursor(dpy, XC_left_ptr);
 582         wCursor[WCUR_ARROW] = XCreateFontCursor(dpy, XC_top_left_arrow);
 583         wCursor[WCUR_MOVE] = XCreateFontCursor(dpy, XC_fleur);
 584         wCursor[WCUR_RESIZE] = XCreateFontCursor(dpy, XC_sizing);
 585         wCursor[WCUR_TOPLEFTRESIZE] = XCreateFontCursor(dpy, XC_top_left_corner);
 586         wCursor[WCUR_TOPRIGHTRESIZE] = XCreateFontCursor(dpy, XC_top_right_corner);
 587         wCursor[WCUR_BOTTOMLEFTRESIZE] = XCreateFontCursor(dpy, XC_bottom_left_corner);
 588         wCursor[WCUR_BOTTOMRIGHTRESIZE] = XCreateFontCursor(dpy, XC_bottom_right_corner);
 589         wCursor[WCUR_VERTICALRESIZE] = XCreateFontCursor(dpy, XC_sb_v_double_arrow);
 590         wCursor[WCUR_HORIZONRESIZE] = XCreateFontCursor(dpy, XC_sb_h_double_arrow);
 591         wCursor[WCUR_WAIT] = XCreateFontCursor(dpy, XC_watch);
 592         wCursor[WCUR_QUESTION] = XCreateFontCursor(dpy, XC_question_arrow);
 593         wCursor[WCUR_TEXT] = XCreateFontCursor(dpy, XC_xterm);  /* odd name??? */
 594         wCursor[WCUR_SELECT] = XCreateFontCursor(dpy, XC_cross);
 595         {
 596                 Pixmap cur = XCreatePixmap(dpy, DefaultRootWindow(dpy), 16, 16, 1);
 597                 GC gc = XCreateGC(dpy, cur, 0, NULL);
 598                 XColor black;
 599                 memset(&black, 0, sizeof(XColor));
 600                 XSetForeground(dpy, gc, 0);
 601                 XFillRectangle(dpy, cur, gc, 0, 0, 16, 16);
 602                 XFreeGC(dpy, gc);
 603                 wCursor[WCUR_EMPTY] = XCreatePixmapCursor(dpy, cur, cur, &black, &black, 0, 0);
 604                 XFreePixmap(dpy, cur);
 605         }
 606
 607 #ifndef HAVE_INOTIFY
 608         /* signal handler stuff that gets called when a signal is caught */
 609         WMAddPersistentTimerHandler(500, delayedAction, NULL);
 610 #endif
 611
 612         /* emergency exit... */
 613         sig_action.sa_handler = handleSig;
 614         sigemptyset(&sig_action.sa_mask);
 615
 616         sig_action.sa_flags = SA_RESTART;
 617         sigaction(SIGQUIT, &sig_action, NULL);
 618         /* instead of catching these, we let the default handler abort the
 619          * program. The new monitor process will take appropriate action
 620          * when it detects the crash.
 621          sigaction(SIGSEGV, &sig_action, NULL);
 622          sigaction(SIGBUS, &sig_action, NULL);
 623          sigaction(SIGFPE, &sig_action, NULL);
 624          sigaction(SIGABRT, &sig_action, NULL);
 625          */
 626
 627         sig_action.sa_handler = handleExitSig;
 628
 629         /* Here we set SA_RESTART for safety, because SIGUSR1 may not be handled
 630          * immediately. -Dan */
 631         sig_action.sa_flags = SA_RESTART;
 632         sigaction(SIGTERM, &sig_action, NULL);
 633         sigaction(SIGINT, &sig_action, NULL);
 634         sigaction(SIGHUP, &sig_action, NULL);
 635         sigaction(SIGUSR1, &sig_action, NULL);
 636         sigaction(SIGUSR2, &sig_action, NULL);
 637
 638         /* ignore dead pipe */
 639         /* Because POSIX mandates that only signal with handlers are reset
 640          * accross an exec*(), we do not want to propagate ignoring SIGPIPEs
 641          * to children. Hence the dummy handler.
 642          * Philippe Troin <phil@fifi.org>
 643          */
 644         sig_action.sa_handler = &dummyHandler;
 645         sig_action.sa_flags = SA_RESTART;
 646         sigaction(SIGPIPE, &sig_action, NULL);
 647
 648         /* handle dead children */
 649         sig_action.sa_handler = buryChild;
 650         sig_action.sa_flags = SA_NOCLDSTOP | SA_RESTART;
 651         sigaction(SIGCHLD, &sig_action, NULL);
 652
 653         /* Now we unblock all signals, that may have been blocked by the parent
 654          * who exec()-ed us. This can happen for example if Window Maker crashes
 655          * and restarts itself or another window manager from the signal handler.
 656          * In this case, the new proccess inherits the blocked signal mask and
 657          * will no longer react to that signal, until unblocked.
 658          * This is because the signal handler of the proccess who crashed (parent)
 659          * didn't return, and the signal remained blocked. -Dan
 660          */
 661         sigfillset(&sig_action.sa_mask);
 662         sigprocmask(SIG_UNBLOCK, &sig_action.sa_mask, NULL);
 663
 664         /* handle X shutdowns a such */
 665         XSetIOErrorHandler(handleXIO);
 666
 667         /* set hook for out event dispatcher in WINGs event dispatcher */
 668         WMHookEventHandler(DispatchEvent);
 669
 670         /* initialize defaults stuff */
 671         WDWindowMaker = wDefaultsInitDomain("WindowMaker", True);
 672         if (!WDWindowMaker->dictionary) {
 673                 wwarning(_("could not read domain \"%s\" from defaults database"), "WindowMaker");
 674         }
 675
 676         /* read defaults that don't change until a restart and are
 677          * screen independent */
 678         wReadStaticDefaults(WDWindowMaker ? WDWindowMaker->dictionary : NULL);
 679
 680         /* check sanity of some values */
 681         if (wPreferences.icon_size < 16) {
 682                 wwarning(_("icon size is configured to %i, but it's too small. Using 16, instead\n"),
 683                          wPreferences.icon_size);
 684                 wPreferences.icon_size = 16;
 685         }
 686
 687         /* init other domains */
 688         WDRootMenu = wDefaultsInitDomain("WMRootMenu", False);
 689         if (!WDRootMenu->dictionary) {
 690                 wwarning(_("could not read domain \"%s\" from defaults database"), "WMRootMenu");
 691         }
 692         wDefaultsMergeGlobalMenus(WDRootMenu);
 693
 694         WDWindowAttributes = wDefaultsInitDomain("WMWindowAttributes", True);
 695         if (!WDWindowAttributes->dictionary) {
 696                 wwarning(_("could not read domain \"%s\" from defaults database"), "WMWindowAttributes");
 697         }
 698
 699         XSetErrorHandler((XErrorHandler) catchXError);
 700
 701 #ifdef SHAPE
 702         /* ignore j */
 703         wShapeSupported = XShapeQueryExtension(dpy, &wShapeEventBase, &j);
 704 #endif
 705
 706 #ifdef KEEP_XKB_LOCK_STATUS
 707         wXkbSupported = XkbQueryExtension(dpy, NULL, &wXkbEventBase, NULL, NULL, NULL);
 708         if (wPreferences.modelock && !wXkbSupported) {
 709                 wwarning(_("XKB is not supported. KbdModeLock is automatically disabled."));
 710                 wPreferences.modelock = 0;
 711         }
 712 #endif
 713
 714         if (defaultScreenOnly) {
 715                 max = 1;
 716         } else {
 717                 max = ScreenCount(dpy);
 718         }
 719         wScreen = wmalloc(sizeof(WScreen *) * max);
 720
 721         wScreenCount = 0;
 722
 723         /* manage the screens */
 724         for (j = 0; j < max; j++) {
 725                 if (defaultScreenOnly || max == 1) {
 726                         wScreen[wScreenCount] = wScreenInit(DefaultScreen(dpy));
 727                         if (!wScreen[wScreenCount]) {
 728                                 wfatal(_("it seems that there is already a window manager running"));
 729                                 Exit(1);
 730                         }
 731                 } else {
 732                         wScreen[wScreenCount] = wScreenInit(j);
 733                         if (!wScreen[wScreenCount]) {
 734                                 wwarning(_("could not manage screen %i"), j);
 735                                 continue;
 736                         }
 737                 }
 738                 wScreenCount++;
 739         }
 740
 741         InitializeSwitchMenu();
 742
 743         /* initialize/restore state for the screens */
 744         for (j = 0; j < wScreenCount; j++) {
 745                 int lastDesktop;
 746
 747                 lastDesktop = wNETWMGetCurrentDesktopFromHint(wScreen[j]);
 748
 749                 wScreenRestoreState(wScreen[j]);
 750
 751                 /* manage all windows that were already here before us */
 752                 if (!wPreferences.flags.nodock && wScreen[j]->dock)
 753                         wScreen[j]->last_dock = wScreen[j]->dock;
 754
 755                 manageAllWindows(wScreen[j], wPreferences.flags.restarting == 2);
 756
 757                 /* restore saved menus */
 758                 wMenuRestoreState(wScreen[j]);
 759
 760                 /* If we're not restarting, restore session */
 761                 if (wPreferences.flags.restarting == 0 && !wPreferences.flags.norestore)
 762                         wSessionRestoreState(wScreen[j]);
 763
 764                 if (!wPreferences.flags.noautolaunch) {
 765                         /* auto-launch apps */
 766                         if (!wPreferences.flags.nodock && wScreen[j]->dock) {
 767                                 wScreen[j]->last_dock = wScreen[j]->dock;
 768                                 wDockDoAutoLaunch(wScreen[j]->dock, 0);
 769                         }
 770                         /* auto-launch apps in clip */
 771                         if (!wPreferences.flags.noclip) {
 772                                 int i;
 773                                 for (i = 0; i < wScreen[j]->workspace_count; i++) {
 774                                         if (wScreen[j]->workspaces[i]->clip) {
 775                                                 wScreen[j]->last_dock = wScreen[j]->workspaces[i]->clip;
 776                                                 wDockDoAutoLaunch(wScreen[j]->workspaces[i]->clip, i);
 777                                         }
 778                                 }
 779                         }
 780                 }
 781
 782                 /* go to workspace where we were before restart */
 783                 if (lastDesktop >= 0) {
 784                         wWorkspaceForceChange(wScreen[j], lastDesktop);
 785                 } else {
 786                         wSessionRestoreLastWorkspace(wScreen[j]);
 787                 }
 788         }
 789
 790         if (wScreenCount == 0) {
 791                 wfatal(_("could not manage any screen"));
 792                 Exit(1);
 793         }
 794
 795 #ifndef HAVE_INOTIFY
 796         if (!wPreferences.flags.nopolling && !wPreferences.flags.noupdates) {
 797                 /* setup defaults file polling */
 798                 WMAddTimerHandler(3000, wDefaultsCheckDomains, NULL);
 799         }
 800 #endif
 801
 802 }
 803
 804 static Bool windowInList(Window window, Window * list, int count)
 805 {
 806         for (; count >= 0; count--) {
 807                 if (window == list[count])
 808                         return True;
 809         }
 810         return False;
 811 }
 812
 813 /*
 814  *-----------------------------------------------------------------------
 815  * manageAllWindows--
 816  *      Manages all windows in the screen.
 817  *
 818  * Notes:
 819  *      Called when the wm is being started.
 820  *      No events can be processed while the windows are being
 821  * reparented/managed.
 822  *-----------------------------------------------------------------------
 823  */
 824 static void manageAllWindows(WScreen * scr, int crashRecovery)
 825 {
 826         Window root, parent;
 827         Window *children;
 828         unsigned int nchildren;
 829         unsigned int i, j;
 830         WWindow *wwin;
 831
 832         XGrabServer(dpy);
 833         XQueryTree(dpy, scr->root_win, &root, &parent, &children, &nchildren);
 834
 835         scr->flags.startup = 1;
 836
 837         /* first remove all icon windows */
 838         for (i = 0; i < nchildren; i++) {
 839                 XWMHints *wmhints;
 840
 841                 if (children[i] == None)
 842                         continue;
 843
 844                 wmhints = XGetWMHints(dpy, children[i]);
 845                 if (wmhints && (wmhints->flags & IconWindowHint)) {
 846                         for (j = 0; j < nchildren; j++) {
 847                                 if (children[j] == wmhints->icon_window) {
 848                                         XFree(wmhints);
 849                                         wmhints = NULL;
 850                                         children[j] = None;
 851                                         break;
 852                                 }
 853                         }
 854                 }
 855                 if (wmhints) {
 856                         XFree(wmhints);
 857                 }
 858         }
 859
 860         for (i = 0; i < nchildren; i++) {
 861                 if (children[i] == None)
 862                         continue;
 863
 864                 wwin = wManageWindow(scr, children[i]);
 865                 if (wwin) {
 866                         /* apply states got from WSavedState */
 867                         /* shaded + minimized is not restored correctly */
 868                         if (wwin->flags.shaded) {
 869                                 wwin->flags.shaded = 0;
 870                                 wShadeWindow(wwin);
 871                         }
 872                         if (wwin->flags.miniaturized
 873                             && (wwin->transient_for == None
 874                                 || wwin->transient_for == scr->root_win
 875                                 || !windowInList(wwin->transient_for, children, nchildren))) {
 876
 877                                 wwin->flags.skip_next_animation = 1;
 878                                 wwin->flags.miniaturized = 0;
 879                                 wIconifyWindow(wwin);
 880                         } else {
 881                                 wClientSetState(wwin, NormalState, None);
 882                         }
 883                         if (crashRecovery) {
 884                                 int border;
 885
 886                                 border = (!HAS_BORDER(wwin) ? 0 : FRAME_BORDER_WIDTH);
 887
 888                                 wWindowMove(wwin, wwin->frame_x - border,
 889                                             wwin->frame_y - border -
 890                                             (wwin->frame->titlebar ? wwin->frame->titlebar->height : 0));
 891                         }
 892                 }
 893         }
 894         XUngrabServer(dpy);
 895
 896         /* hide apps */
 897         wwin = scr->focused_window;
 898         while (wwin) {
 899                 if (wwin->flags.hidden) {
 900                         WApplication *wapp = wApplicationOf(wwin->main_window);
 901
 902                         if (wapp) {
 903                                 wwin->flags.hidden = 0;
 904                                 wHideApplication(wapp);
 905                         } else {
 906                                 wwin->flags.hidden = 0;
 907                         }
 908                 }
 909                 wwin = wwin->prev;
 910         }
 911
 912         XFree(children);
 913         scr->flags.startup = 0;
 914         scr->flags.startup2 = 1;
 915
 916         while (XPending(dpy)) {
 917                 XEvent ev;
 918                 WMNextEvent(dpy, &ev);
 919                 WMHandleEvent(&ev);
 920         }
 921         wWorkspaceForceChange(scr, 0);
 922         if (!wPreferences.flags.noclip)
 923                 wDockShowIcons(scr->workspaces[scr->current_workspace]->clip);
 924         scr->flags.startup2 = 0;
 925 }