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 along
  18  *  with this program; if not, write to the Free Software Foundation, Inc.,
  19  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include "wconfig.h"
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <unistd.h>
  27 #include <string.h>
  28 #include <errno.h>
  29 #include <signal.h>
  30 #include <sys/wait.h>
  31 #ifdef __FreeBSD__
  32 #include <sys/signal.h>
  33 #endif
  34
  35 #include <X11/Xlib.h>
  36 #include <X11/Xresource.h>
  37 #include <X11/Xutil.h>
  38 #include <X11/cursorfont.h>
  39 #include <X11/Xproto.h>
  40 #include <X11/keysym.h>
  41 #ifdef SHAPE
  42 #include <X11/extensions/shape.h>
  43 #endif
  44 #ifdef KEEP_XKB_LOCK_STATUS
  45 #include <X11/XKBlib.h>
  46 #endif
  47 #ifdef HAVE_XRANDR
  48 #include <X11/extensions/Xrandr.h>
  49 #endif
  50
  51 #include "WindowMaker.h"
  52 #include "GNUstep.h"
  53 #include "texture.h"
  54 #include "screen.h"
  55 #include "window.h"
  56 #include "actions.h"
  57 #include "client.h"
  58 #include "main.h"
  59 #include "startup.h"
  60 #include "dock.h"
  61 #include "workspace.h"
  62 #include "keybind.h"
  63 #include "framewin.h"
  64 #include "session.h"
  65 #include "defaults.h"
  66 #include "properties.h"
  67 #include "dialog.h"
  68 #include "wmspec.h"
  69 #include "event.h"
  70 #include "switchmenu.h"
  71 #ifdef XDND
  72 #include "xdnd.h"
  73 #endif
  74
  75 #include "xutil.h"
  76
  77 /* for SunOS */
  78 #ifndef SA_RESTART
  79 # define SA_RESTART 0
  80 #endif
  81
  82 /* Just in case, for weirdo systems */
  83 #ifndef SA_NODEFER
  84 # define SA_NODEFER 0
  85 #endif
  86
  87 /****** Global Variables ******/
  88 extern WDDomain *WDWindowMaker;
  89 extern WDDomain *WDRootMenu;
  90 extern WDDomain *WDWindowAttributes;
  91 extern WShortKey wKeyBindings[WKBD_LAST];
  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 extern Atom _XA_GNUSTEP_WM_ATTR;
 121 extern Atom _XA_WINDOWMAKER_MENU;
 122 extern Atom _XA_WINDOWMAKER_WM_PROTOCOLS;
 123 extern Atom _XA_WINDOWMAKER_STATE;
 124 extern Atom _XA_WINDOWMAKER_WM_FUNCTION;
 125 extern Atom _XA_WINDOWMAKER_NOTICEBOARD;
 126 extern Atom _XA_WINDOWMAKER_COMMAND;
 127 extern Atom _XA_WINDOWMAKER_ICON_SIZE;
 128 extern Atom _XA_WINDOWMAKER_ICON_TILE;
 129 extern Atom _XA_GNUSTEP_WM_MINIATURIZE_WINDOW;
 130 extern Atom _XA_GNUSTEP_TITLEBAR_STATE;
 131 extern Atom _XA_WM_IGNORE_FOCUS_EVENTS;
 132
 133 /* cursors */
 134 extern Cursor wCursor[WCUR_LAST];
 135
 136 #ifndef HAVE_INOTIFY
 137 /* special flags */
 138 extern char WDelayedActionSet;
 139 #endif
 140
 141 extern void NotifyDeadProcess(pid_t pid, unsigned char status);
 142
 143 /***** Local *****/
 144 static WScreen **wScreen = NULL;
 145 static unsigned int _NumLockMask = 0;
 146 static unsigned int _ScrollLockMask = 0;
 147 static void manageAllWindows(WScreen * scr, int crashed);
 148
 149 static int catchXError(Display * dpy, XErrorEvent * error)
 150 {
 151         char buffer[MAXLINE];
 152
 153         /* ignore some errors */
 154         if (error->resourceid != None
 155             && ((error->error_code == BadDrawable && error->request_code == X_GetGeometry)
 156                 || (error->error_code == BadMatch && (error->request_code == X_SetInputFocus))
 157                 || (error->error_code == BadWindow)
 158                 /*
 159                    && (error->request_code == X_GetWindowAttributes
 160                    || error->request_code == X_SetInputFocus
 161                    || error->request_code == X_ChangeWindowAttributes
 162                    || error->request_code == X_GetProperty
 163                    || error->request_code == X_ChangeProperty
 164                    || error->request_code == X_QueryTree
 165                    || error->request_code == X_GrabButton
 166                    || error->request_code == X_UngrabButton
 167                    || error->request_code == X_SendEvent
 168                    || error->request_code == X_ConfigureWindow))
 169                  */
 170                 || (error->request_code == X_InstallColormap))) {
 171                 return 0;
 172         }
 173         FormatXError(dpy, error, buffer, MAXLINE);
 174         wwarning(_("internal X error: %s"), buffer);
 175         return -1;
 176 }
 177
 178 /*
 179  *----------------------------------------------------------------------
 180  * handleXIO-
 181  *      Handle X shutdowns and other stuff.
 182  *----------------------------------------------------------------------
 183  */
 184 static int handleXIO(Display * xio_dpy)
 185 {
 186         dpy = NULL;
 187         Exit(0);
 188         return 0;
 189 }
 190
 191 #ifndef HAVE_INOTIFY
 192 /*
 193  *----------------------------------------------------------------------
 194  * delayedAction-
 195  *      Action to be executed after the signal() handler is exited.
 196  *----------------------------------------------------------------------
 197  */
 198 static void delayedAction(void *cdata)
 199 {
 200         if (WDelayedActionSet == 0)
 201                 return;
 202
 203         WDelayedActionSet--;
 204         /*
 205          * Make the event dispatcher do whatever it needs to do,
 206          * including handling zombie processes, restart and exit
 207          * signals.
 208          */
 209         DispatchEvent(NULL);
 210 }
 211 #endif
 212
 213 /*
 214  *----------------------------------------------------------------------
 215  * handleExitSig--
 216  *      User generated exit signal handler.
 217  *----------------------------------------------------------------------
 218  */
 219 static RETSIGTYPE handleExitSig(int sig)
 220 {
 221         sigset_t sigs;
 222
 223         sigfillset(&sigs);
 224         sigprocmask(SIG_BLOCK, &sigs, NULL);
 225
 226         if (sig == SIGUSR1) {
 227                 wwarning("got signal %i - restarting", sig);
 228                 SIG_WCHANGE_STATE(WSTATE_NEED_RESTART);
 229         } else if (sig == SIGUSR2) {
 230                 wwarning("got signal %i - rereading defaults", sig);
 231                 SIG_WCHANGE_STATE(WSTATE_NEED_REREAD);
 232         } else if (sig == SIGTERM || sig == SIGINT || sig == SIGHUP) {
 233                 wwarning("got signal %i - exiting...", sig);
 234                 SIG_WCHANGE_STATE(WSTATE_NEED_EXIT);
 235         }
 236
 237         sigprocmask(SIG_UNBLOCK, &sigs, NULL);
 238         DispatchEvent(NULL);    /* Dispatch events imediately. */
 239 }
 240
 241 /* Dummy signal handler */
 242 static void dummyHandler(int sig)
 243 {
 244 }
 245
 246 /*
 247  *----------------------------------------------------------------------
 248  * handleSig--
 249  *      general signal handler. Exits the program gently.
 250  *----------------------------------------------------------------------
 251  */
 252 static RETSIGTYPE handleSig(int sig)
 253 {
 254         wfatal("got signal %i", sig);
 255
 256         /* Setting the signal behaviour back to default and then reraising the
 257          * signal is a cleaner way to make program exit and core dump than calling
 258          * abort(), since it correctly returns from the signal handler and sets
 259          * the flags accordingly. -Dan
 260          */
 261         if (sig == SIGSEGV || sig == SIGFPE || sig == SIGBUS || sig == SIGILL || sig == SIGABRT) {
 262                 signal(sig, SIG_DFL);
 263                 kill(getpid(), sig);
 264                 return;
 265         }
 266
 267         wAbort(0);
 268 }
 269
 270 static RETSIGTYPE buryChild(int foo)
 271 {
 272         pid_t pid;
 273         int status;
 274         int save_errno = errno;
 275         sigset_t sigs;
 276
 277         sigfillset(&sigs);
 278         /* Block signals so that NotifyDeadProcess() doesn't get fux0red */
 279         sigprocmask(SIG_BLOCK, &sigs, NULL);
 280
 281         /* R.I.P. */
 282         /* If 2 or more kids exit in a small time window, before this handler gets
 283          * the chance to get invoked, the SIGCHLD signals will be merged and only
 284          * one SIGCHLD signal will be sent to us. We use a while loop to get all
 285          * exited child status because we can't count on the number of SIGCHLD
 286          * signals to know exactly how many kids have exited. -Dan
 287          */
 288         while ((pid = waitpid(-1, &status, WNOHANG)) > 0 || (pid < 0 && errno == EINTR)) {
 289                 NotifyDeadProcess(pid, WEXITSTATUS(status));
 290         }
 291
 292         sigprocmask(SIG_UNBLOCK, &sigs, NULL);
 293
 294         errno = save_errno;
 295 }
 296
 297 static void getOffendingModifiers(void)
 298 {
 299         int i;
 300         XModifierKeymap *modmap;
 301         KeyCode nlock, slock;
 302         static int mask_table[8] = {
 303                 ShiftMask, LockMask, ControlMask, Mod1Mask,
 304                 Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask
 305         };
 306
 307         nlock = XKeysymToKeycode(dpy, XK_Num_Lock);
 308         slock = XKeysymToKeycode(dpy, XK_Scroll_Lock);
 309
 310         /*
 311          * Find out the masks for the NumLock and ScrollLock modifiers,
 312          * so that we can bind the grabs for when they are enabled too.
 313          */
 314         modmap = XGetModifierMapping(dpy);
 315
 316         if (modmap != NULL && modmap->max_keypermod > 0) {
 317                 for (i = 0; i < 8 * modmap->max_keypermod; i++) {
 318                         if (modmap->modifiermap[i] == nlock && nlock != 0)
 319                                 _NumLockMask = mask_table[i / modmap->max_keypermod];
 320                         else if (modmap->modifiermap[i] == slock && slock != 0)
 321                                 _ScrollLockMask = mask_table[i / modmap->max_keypermod];
 322                 }
 323         }
 324
 325         if (modmap)
 326                 XFreeModifiermap(modmap);
 327 }
 328
 329 #ifdef NUMLOCK_HACK
 330 void
 331 wHackedGrabKey(int keycode, unsigned int modifiers,
 332                Window grab_window, Bool owner_events, int pointer_mode, int keyboard_mode)
 333 {
 334         if (modifiers == AnyModifier)
 335                 return;
 336
 337         /* grab all combinations of the modifier with CapsLock, NumLock and
 338          * ScrollLock. How much memory/CPU does such a monstrosity consume
 339          * in the server?
 340          */
 341         if (_NumLockMask)
 342                 XGrabKey(dpy, keycode, modifiers | _NumLockMask,
 343                          grab_window, owner_events, pointer_mode, keyboard_mode);
 344         if (_ScrollLockMask)
 345                 XGrabKey(dpy, keycode, modifiers | _ScrollLockMask,
 346                          grab_window, owner_events, pointer_mode, keyboard_mode);
 347         if (_NumLockMask && _ScrollLockMask)
 348                 XGrabKey(dpy, keycode, modifiers | _NumLockMask | _ScrollLockMask,
 349                          grab_window, owner_events, pointer_mode, keyboard_mode);
 350         if (_NumLockMask)
 351                 XGrabKey(dpy, keycode, modifiers | _NumLockMask | LockMask,
 352                          grab_window, owner_events, pointer_mode, keyboard_mode);
 353         if (_ScrollLockMask)
 354                 XGrabKey(dpy, keycode, modifiers | _ScrollLockMask | LockMask,
 355                          grab_window, owner_events, pointer_mode, keyboard_mode);
 356         if (_NumLockMask && _ScrollLockMask)
 357                 XGrabKey(dpy, keycode, modifiers | _NumLockMask | _ScrollLockMask | LockMask,
 358                          grab_window, owner_events, pointer_mode, keyboard_mode);
 359         /* phew, I guess that's all, right? */
 360 }
 361 #endif
 362
 363 void
 364 wHackedGrabButton(unsigned int button, unsigned int modifiers,
 365                   Window grab_window, Bool owner_events,
 366                   unsigned int event_mask, int pointer_mode, int keyboard_mode, Window confine_to, Cursor cursor)
 367 {
 368         XGrabButton(dpy, button, modifiers, grab_window, owner_events,
 369                     event_mask, pointer_mode, keyboard_mode, confine_to, cursor);
 370
 371         if (modifiers == AnyModifier)
 372                 return;
 373
 374         XGrabButton(dpy, button, modifiers | LockMask, grab_window, owner_events,
 375                     event_mask, pointer_mode, keyboard_mode, confine_to, cursor);
 376
 377 #ifdef NUMLOCK_HACK
 378         /* same as above, but for mouse buttons */
 379         if (_NumLockMask)
 380                 XGrabButton(dpy, button, modifiers | _NumLockMask,
 381                             grab_window, owner_events, event_mask, pointer_mode,
 382                             keyboard_mode, confine_to, cursor);
 383         if (_ScrollLockMask)
 384                 XGrabButton(dpy, button, modifiers | _ScrollLockMask,
 385                             grab_window, owner_events, event_mask, pointer_mode,
 386                             keyboard_mode, confine_to, cursor);
 387         if (_NumLockMask && _ScrollLockMask)
 388                 XGrabButton(dpy, button, modifiers | _ScrollLockMask | _NumLockMask,
 389                             grab_window, owner_events, event_mask, pointer_mode,
 390                             keyboard_mode, confine_to, cursor);
 391         if (_NumLockMask)
 392                 XGrabButton(dpy, button, modifiers | _NumLockMask | LockMask,
 393                             grab_window, owner_events, event_mask, pointer_mode,
 394                             keyboard_mode, confine_to, cursor);
 395         if (_ScrollLockMask)
 396                 XGrabButton(dpy, button, modifiers | _ScrollLockMask | LockMask,
 397                             grab_window, owner_events, event_mask, pointer_mode,
 398                             keyboard_mode, confine_to, cursor);
 399         if (_NumLockMask && _ScrollLockMask)
 400                 XGrabButton(dpy, button, modifiers | _ScrollLockMask | _NumLockMask | LockMask,
 401                             grab_window, owner_events, event_mask, pointer_mode,
 402                             keyboard_mode, confine_to, cursor);
 403 #endif                          /* NUMLOCK_HACK */
 404 }
 405
 406 WScreen *wScreenWithNumber(int i)
 407 {
 408         assert(i < wScreenCount);
 409
 410         return wScreen[i];
 411 }
 412
 413 WScreen *wScreenForRootWindow(Window window)
 414 {
 415         int i;
 416
 417         if (wScreenCount == 1)
 418                 return wScreen[0];
 419
 420         /* Since the number of heads will probably be small (normally 2),
 421          * it should be faster to use this than a hash table, because
 422          * of the overhead. */
 423         for (i = 0; i < wScreenCount; i++)
 424                 if (wScreen[i]->root_win == window)
 425                         return wScreen[i];
 426
 427         return wScreenForWindow(window);
 428 }
 429
 430 WScreen *wScreenForWindow(Window window)
 431 {
 432         XWindowAttributes attr;
 433
 434         if (wScreenCount == 1)
 435                 return wScreen[0];
 436
 437         if (XGetWindowAttributes(dpy, window, &attr))
 438                 return wScreenForRootWindow(attr.root);
 439
 440         return NULL;
 441 }
 442
 443 static char *atomNames[] = {
 444         "WM_STATE",
 445         "WM_CHANGE_STATE",
 446         "WM_PROTOCOLS",
 447         "WM_TAKE_FOCUS",
 448         "WM_DELETE_WINDOW",
 449         "WM_SAVE_YOURSELF",
 450         "WM_CLIENT_LEADER",
 451         "WM_COLORMAP_WINDOWS",
 452         "WM_COLORMAP_NOTIFY",
 453
 454         "_WINDOWMAKER_MENU",
 455         "_WINDOWMAKER_STATE",
 456         "_WINDOWMAKER_WM_PROTOCOLS",
 457         "_WINDOWMAKER_WM_FUNCTION",
 458         "_WINDOWMAKER_NOTICEBOARD",
 459         "_WINDOWMAKER_COMMAND",
 460         "_WINDOWMAKER_ICON_SIZE",
 461         "_WINDOWMAKER_ICON_TILE",
 462
 463         GNUSTEP_WM_ATTR_NAME,
 464         GNUSTEP_WM_MINIATURIZE_WINDOW,
 465         GNUSTEP_TITLEBAR_STATE,
 466
 467         "WM_IGNORE_FOCUS_EVENTS"
 468 };
 469
 470 /*
 471  *----------------------------------------------------------
 472  * StartUp--
 473  *      starts the window manager and setup global data.
 474  * Called from main() at startup.
 475  *
 476  * Side effects:
 477  * global data declared in main.c is initialized
 478  *----------------------------------------------------------
 479  */
 480 void StartUp(Bool defaultScreenOnly)
 481 {
 482         struct sigaction sig_action;
 483         int j, max;
 484 #ifdef HAVE_XRANDR
 485         int dummy;
 486 #endif
 487         Atom atom[sizeof(atomNames) / sizeof(atomNames[0])];
 488
 489         /*
 490          * Ignore CapsLock in modifiers
 491          */
 492         ValidModMask = 0xff & ~LockMask;
 493
 494         getOffendingModifiers();
 495         /*
 496          * Ignore NumLock and ScrollLock too
 497          */
 498         ValidModMask &= ~(_NumLockMask | _ScrollLockMask);
 499
 500         memset(&wKeyBindings, 0, sizeof(wKeyBindings));
 501
 502         wWinContext = XUniqueContext();
 503         wAppWinContext = XUniqueContext();
 504         wStackContext = XUniqueContext();
 505         wVEdgeContext = XUniqueContext();
 506
 507         /*    _XA_VERSION = XInternAtom(dpy, "VERSION", False); */
 508
 509 #ifdef HAVE_XINTERNATOMS
 510         XInternAtoms(dpy, atomNames, sizeof(atomNames) / sizeof(atomNames[0]), False, atom);
 511 #else
 512
 513         {
 514                 int i;
 515                 for (i = 0; i < sizeof(atomNames) / sizeof(atomNames[0]); i++)
 516                         atom[i] = XInternAtom(dpy, atomNames[i], False);
 517         }
 518 #endif
 519
 520         _XA_WM_STATE = atom[0];
 521         _XA_WM_CHANGE_STATE = atom[1];
 522         _XA_WM_PROTOCOLS = atom[2];
 523         _XA_WM_TAKE_FOCUS = atom[3];
 524         _XA_WM_DELETE_WINDOW = atom[4];
 525         _XA_WM_SAVE_YOURSELF = atom[5];
 526         _XA_WM_CLIENT_LEADER = atom[6];
 527         _XA_WM_COLORMAP_WINDOWS = atom[7];
 528         _XA_WM_COLORMAP_NOTIFY = atom[8];
 529
 530         _XA_WINDOWMAKER_MENU = atom[9];
 531         _XA_WINDOWMAKER_STATE = atom[10];
 532         _XA_WINDOWMAKER_WM_PROTOCOLS = atom[11];
 533         _XA_WINDOWMAKER_WM_FUNCTION = atom[12];
 534         _XA_WINDOWMAKER_NOTICEBOARD = atom[13];
 535         _XA_WINDOWMAKER_COMMAND = atom[14];
 536         _XA_WINDOWMAKER_ICON_SIZE = atom[15];
 537         _XA_WINDOWMAKER_ICON_TILE = atom[16];
 538
 539         _XA_GNUSTEP_WM_ATTR = atom[17];
 540         _XA_GNUSTEP_WM_MINIATURIZE_WINDOW = atom[18];
 541         _XA_GNUSTEP_TITLEBAR_STATE = atom[19];
 542
 543         _XA_WM_IGNORE_FOCUS_EVENTS = atom[20];
 544
 545 #ifdef XDND
 546         wXDNDInitializeAtoms();
 547 #endif
 548
 549         /* cursors */
 550         wCursor[WCUR_NORMAL] = None;    /* inherit from root */
 551         wCursor[WCUR_ROOT] = XCreateFontCursor(dpy, XC_left_ptr);
 552         wCursor[WCUR_ARROW] = XCreateFontCursor(dpy, XC_top_left_arrow);
 553         wCursor[WCUR_MOVE] = XCreateFontCursor(dpy, XC_fleur);
 554         wCursor[WCUR_RESIZE] = XCreateFontCursor(dpy, XC_sizing);
 555         wCursor[WCUR_TOPLEFTRESIZE] = XCreateFontCursor(dpy, XC_top_left_corner);
 556         wCursor[WCUR_TOPRIGHTRESIZE] = XCreateFontCursor(dpy, XC_top_right_corner);
 557         wCursor[WCUR_BOTTOMLEFTRESIZE] = XCreateFontCursor(dpy, XC_bottom_left_corner);
 558         wCursor[WCUR_BOTTOMRIGHTRESIZE] = XCreateFontCursor(dpy, XC_bottom_right_corner);
 559         wCursor[WCUR_VERTICALRESIZE] = XCreateFontCursor(dpy, XC_sb_v_double_arrow);
 560         wCursor[WCUR_HORIZONRESIZE] = XCreateFontCursor(dpy, XC_sb_h_double_arrow);
 561         wCursor[WCUR_WAIT] = XCreateFontCursor(dpy, XC_watch);
 562         wCursor[WCUR_QUESTION] = XCreateFontCursor(dpy, XC_question_arrow);
 563         wCursor[WCUR_TEXT] = XCreateFontCursor(dpy, XC_xterm);  /* odd name??? */
 564         wCursor[WCUR_SELECT] = XCreateFontCursor(dpy, XC_cross);
 565
 566         Pixmap cur = XCreatePixmap(dpy, DefaultRootWindow(dpy), 16, 16, 1);
 567         GC gc = XCreateGC(dpy, cur, 0, NULL);
 568         XColor black;
 569         memset(&black, 0, sizeof(XColor));
 570         XSetForeground(dpy, gc, 0);
 571         XFillRectangle(dpy, cur, gc, 0, 0, 16, 16);
 572         XFreeGC(dpy, gc);
 573         wCursor[WCUR_EMPTY] = XCreatePixmapCursor(dpy, cur, cur, &black, &black, 0, 0);
 574         XFreePixmap(dpy, cur);
 575
 576
 577 #ifndef HAVE_INOTIFY
 578         /* signal handler stuff that gets called when a signal is caught */
 579         WMAddPersistentTimerHandler(500, delayedAction, NULL);
 580 #endif
 581
 582         /* emergency exit... */
 583         sig_action.sa_handler = handleSig;
 584         sigemptyset(&sig_action.sa_mask);
 585
 586         sig_action.sa_flags = SA_RESTART;
 587         sigaction(SIGQUIT, &sig_action, NULL);
 588         /* instead of catching these, we let the default handler abort the
 589          * program. The new monitor process will take appropriate action
 590          * when it detects the crash.
 591          sigaction(SIGSEGV, &sig_action, NULL);
 592          sigaction(SIGBUS, &sig_action, NULL);
 593          sigaction(SIGFPE, &sig_action, NULL);
 594          sigaction(SIGABRT, &sig_action, NULL);
 595          */
 596
 597         sig_action.sa_handler = handleExitSig;
 598
 599         /* Here we set SA_RESTART for safety, because SIGUSR1 may not be handled
 600          * immediately. -Dan */
 601         sig_action.sa_flags = SA_RESTART;
 602         sigaction(SIGTERM, &sig_action, NULL);
 603         sigaction(SIGINT, &sig_action, NULL);
 604         sigaction(SIGHUP, &sig_action, NULL);
 605         sigaction(SIGUSR1, &sig_action, NULL);
 606         sigaction(SIGUSR2, &sig_action, NULL);
 607
 608         /* ignore dead pipe */
 609         /* Because POSIX mandates that only signal with handlers are reset
 610          * accross an exec*(), we do not want to propagate ignoring SIGPIPEs
 611          * to children. Hence the dummy handler.
 612          * Philippe Troin <phil@fifi.org>
 613          */
 614         sig_action.sa_handler = &dummyHandler;
 615         sig_action.sa_flags = SA_RESTART;
 616         sigaction(SIGPIPE, &sig_action, NULL);
 617
 618         /* handle dead children */
 619         sig_action.sa_handler = buryChild;
 620         sig_action.sa_flags = SA_NOCLDSTOP | SA_RESTART;
 621         sigaction(SIGCHLD, &sig_action, NULL);
 622
 623         /* Now we unblock all signals, that may have been blocked by the parent
 624          * who exec()-ed us. This can happen for example if Window Maker crashes
 625          * and restarts itself or another window manager from the signal handler.
 626          * In this case, the new proccess inherits the blocked signal mask and
 627          * will no longer react to that signal, until unblocked.
 628          * This is because the signal handler of the proccess who crashed (parent)
 629          * didn't return, and the signal remained blocked. -Dan
 630          */
 631         sigfillset(&sig_action.sa_mask);
 632         sigprocmask(SIG_UNBLOCK, &sig_action.sa_mask, NULL);
 633
 634         /* handle X shutdowns a such */
 635         XSetIOErrorHandler(handleXIO);
 636
 637         /* set hook for out event dispatcher in WINGs event dispatcher */
 638         WMHookEventHandler(DispatchEvent);
 639
 640         /* initialize defaults stuff */
 641         WDWindowMaker = wDefaultsInitDomain("WindowMaker", True);
 642         if (!WDWindowMaker->dictionary)
 643                 wwarning(_("could not read domain \"%s\" from defaults database"), "WindowMaker");
 644
 645         /* read defaults that don't change until a restart and are
 646          * screen independent */
 647         wReadStaticDefaults(WDWindowMaker ? WDWindowMaker->dictionary : NULL);
 648
 649         /* check sanity of some values */
 650         if (wPreferences.icon_size < 16) {
 651                 wwarning(_("icon size is configured to %i, but it's too small. Using 16 instead"),
 652                          wPreferences.icon_size);
 653                 wPreferences.icon_size = 16;
 654         }
 655
 656         /* init other domains */
 657         WDRootMenu = wDefaultsInitDomain("WMRootMenu", False);
 658         if (!WDRootMenu->dictionary)
 659                 wwarning(_("could not read domain \"%s\" from defaults database"), "WMRootMenu");
 660
 661         wDefaultsMergeGlobalMenus(WDRootMenu);
 662
 663         WDWindowAttributes = wDefaultsInitDomain("WMWindowAttributes", True);
 664         if (!WDWindowAttributes->dictionary)
 665                 wwarning(_("could not read domain \"%s\" from defaults database"), "WMWindowAttributes");
 666
 667         XSetErrorHandler((XErrorHandler) catchXError);
 668
 669 #ifdef SHAPE
 670         /* ignore j */
 671         wShapeSupported = XShapeQueryExtension(dpy, &wShapeEventBase, &j);
 672 #endif
 673
 674 #ifdef HAVE_XRANDR
 675         has_randr = XRRQueryExtension(dpy, &randr_event_base, &dummy);
 676 #endif
 677
 678 #ifdef KEEP_XKB_LOCK_STATUS
 679         wXkbSupported = XkbQueryExtension(dpy, NULL, &wXkbEventBase, NULL, NULL, NULL);
 680         if (wPreferences.modelock && !wXkbSupported) {
 681                 wwarning(_("XKB is not supported. KbdModeLock is automatically disabled."));
 682                 wPreferences.modelock = 0;
 683         }
 684 #endif
 685
 686         if (defaultScreenOnly)
 687                 max = 1;
 688         else
 689                 max = ScreenCount(dpy);
 690
 691         wScreen = wmalloc(sizeof(WScreen *) * max);
 692
 693         wScreenCount = 0;
 694
 695         /* manage the screens */
 696         for (j = 0; j < max; j++) {
 697                 if (defaultScreenOnly || max == 1) {
 698                         wScreen[wScreenCount] = wScreenInit(DefaultScreen(dpy));
 699                         if (!wScreen[wScreenCount]) {
 700                                 wfatal(_("it seems that there is already a window manager running"));
 701                                 Exit(1);
 702                         }
 703                 } else {
 704                         wScreen[wScreenCount] = wScreenInit(j);
 705                         if (!wScreen[wScreenCount]) {
 706                                 wwarning(_("could not manage screen %i"), j);
 707                                 continue;
 708                         }
 709                 }
 710                 wScreenCount++;
 711         }
 712
 713         InitializeSwitchMenu();
 714
 715         /* initialize/restore state for the screens */
 716         for (j = 0; j < wScreenCount; j++) {
 717                 int lastDesktop;
 718
 719                 lastDesktop = wNETWMGetCurrentDesktopFromHint(wScreen[j]);
 720
 721                 wScreenRestoreState(wScreen[j]);
 722
 723                 /* manage all windows that were already here before us */
 724                 if (!wPreferences.flags.nodock && wScreen[j]->dock)
 725                         wScreen[j]->last_dock = wScreen[j]->dock;
 726
 727                 manageAllWindows(wScreen[j], wPreferences.flags.restarting == 2);
 728
 729                 /* restore saved menus */
 730                 wMenuRestoreState(wScreen[j]);
 731
 732                 /* If we're not restarting, restore session */
 733                 if (wPreferences.flags.restarting == 0 && !wPreferences.flags.norestore)
 734                         wSessionRestoreState(wScreen[j]);
 735
 736                 if (!wPreferences.flags.noautolaunch) {
 737                         /* auto-launch apps */
 738                         if (!wPreferences.flags.nodock && wScreen[j]->dock) {
 739                                 wScreen[j]->last_dock = wScreen[j]->dock;
 740                                 wDockDoAutoLaunch(wScreen[j]->dock, 0);
 741                         }
 742                         /* auto-launch apps in clip */
 743                         if (!wPreferences.flags.noclip) {
 744                                 int i;
 745                                 for (i = 0; i < wScreen[j]->workspace_count; i++) {
 746                                         if (wScreen[j]->workspaces[i]->clip) {
 747                                                 wScreen[j]->last_dock = wScreen[j]->workspaces[i]->clip;
 748                                                 wDockDoAutoLaunch(wScreen[j]->workspaces[i]->clip, i);
 749                                         }
 750                                 }
 751                         }
 752                         /* auto-launch apps in drawers */
 753                         if (!wPreferences.flags.nodrawer) {
 754                                 WDrawerChain *dc;
 755                                 for (dc = wScreen[j]->drawers; dc; dc = dc->next) {
 756                                         wScreen[j]->last_dock = dc->adrawer;
 757                                         wDockDoAutoLaunch(dc->adrawer, 0);
 758                                 }
 759                         }
 760                 }
 761
 762                 /* go to workspace where we were before restart */
 763                 if (lastDesktop >= 0)
 764                         wWorkspaceForceChange(wScreen[j], lastDesktop);
 765                 else
 766                         wSessionRestoreLastWorkspace(wScreen[j]);
 767         }
 768
 769         if (wScreenCount == 0) {
 770                 wfatal(_("could not manage any screen"));
 771                 Exit(1);
 772         }
 773
 774 #ifndef HAVE_INOTIFY
 775         /* setup defaults file polling */
 776         if (!wPreferences.flags.nopolling && !wPreferences.flags.noupdates)
 777                 WMAddTimerHandler(3000, wDefaultsCheckDomains, NULL);
 778 #endif
 779
 780 }
 781
 782 static Bool windowInList(Window window, Window * list, int count)
 783 {
 784         for (; count >= 0; count--) {
 785                 if (window == list[count])
 786                         return True;
 787         }
 788         return False;
 789 }
 790
 791 /*
 792  *-----------------------------------------------------------------------
 793  * manageAllWindows--
 794  *      Manages all windows in the screen.
 795  *
 796  * Notes:
 797  *      Called when the wm is being started.
 798  *      No events can be processed while the windows are being
 799  * reparented/managed.
 800  *-----------------------------------------------------------------------
 801  */
 802 static void manageAllWindows(WScreen * scr, int crashRecovery)
 803 {
 804         Window root, parent;
 805         Window *children;
 806         unsigned int nchildren;
 807         unsigned int i, j;
 808         WWindow *wwin;
 809
 810         XGrabServer(dpy);
 811         XQueryTree(dpy, scr->root_win, &root, &parent, &children, &nchildren);
 812
 813         scr->flags.startup = 1;
 814
 815         /* first remove all icon windows */
 816         for (i = 0; i < nchildren; i++) {
 817                 XWMHints *wmhints;
 818
 819                 if (children[i] == None)
 820                         continue;
 821
 822                 wmhints = XGetWMHints(dpy, children[i]);
 823                 if (wmhints && (wmhints->flags & IconWindowHint)) {
 824                         for (j = 0; j < nchildren; j++) {
 825                                 if (children[j] == wmhints->icon_window) {
 826                                         XFree(wmhints);
 827                                         wmhints = NULL;
 828                                         children[j] = None;
 829                                         break;
 830                                 }
 831                         }
 832                 }
 833                 if (wmhints) {
 834                         XFree(wmhints);
 835                 }
 836         }
 837
 838         for (i = 0; i < nchildren; i++) {
 839                 if (children[i] == None)
 840                         continue;
 841
 842                 wwin = wManageWindow(scr, children[i]);
 843                 if (wwin) {
 844                         /* apply states got from WSavedState */
 845                         /* shaded + minimized is not restored correctly */
 846                         if (wwin->flags.shaded) {
 847                                 wwin->flags.shaded = 0;
 848                                 wShadeWindow(wwin);
 849                         }
 850                         if (wwin->flags.miniaturized
 851                             && (wwin->transient_for == None
 852                                 || wwin->transient_for == scr->root_win
 853                                 || !windowInList(wwin->transient_for, children, nchildren))) {
 854
 855                                 wwin->flags.skip_next_animation = 1;
 856                                 wwin->flags.miniaturized = 0;
 857                                 wIconifyWindow(wwin);
 858                         } else {
 859                                 wClientSetState(wwin, NormalState, None);
 860                         }
 861                         if (crashRecovery) {
 862                                 int border;
 863
 864                                 border = (!HAS_BORDER(wwin) ? 0 : scr->frame_border_width);
 865
 866                                 wWindowMove(wwin, wwin->frame_x - border,
 867                                             wwin->frame_y - border -
 868                                             (wwin->frame->titlebar ? wwin->frame->titlebar->height : 0));
 869                         }
 870                 }
 871         }
 872         XUngrabServer(dpy);
 873
 874         /* hide apps */
 875         wwin = scr->focused_window;
 876         while (wwin) {
 877                 if (wwin->flags.hidden) {
 878                         WApplication *wapp = wApplicationOf(wwin->main_window);
 879
 880                         if (wapp) {
 881                                 wwin->flags.hidden = 0;
 882                                 wHideApplication(wapp);
 883                         } else {
 884                                 wwin->flags.hidden = 0;
 885                         }
 886                 }
 887                 wwin = wwin->prev;
 888         }
 889
 890         XFree(children);
 891         scr->flags.startup = 0;
 892         scr->flags.startup2 = 1;
 893
 894         while (XPending(dpy)) {
 895                 XEvent ev;
 896                 WMNextEvent(dpy, &ev);
 897                 WMHandleEvent(&ev);
 898         }
 899         scr->last_workspace = 0;
 900         wWorkspaceForceChange(scr, 0);
 901         if (!wPreferences.flags.noclip)
 902                 wDockShowIcons(scr->workspaces[scr->current_workspace]->clip);
 903         scr->flags.startup2 = 0;
 904 }