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