don't reconfigure twice
[mikachu/openbox.git] / openbox / openbox.c
1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
2
3    openbox.c for the Openbox window manager
4    Copyright (c) 2006        Mikael Magnusson
5    Copyright (c) 2003-2007   Dana Jansens
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    See the COPYING file for a copy of the GNU General Public License.
18 */
19
20 #include "debug.h"
21 #include "openbox.h"
22 #include "session.h"
23 #include "dock.h"
24 #include "modkeys.h"
25 #include "event.h"
26 #include "menu.h"
27 #include "client.h"
28 #include "xerror.h"
29 #include "prop.h"
30 #include "screen.h"
31 #include "startupnotify.h"
32 #include "focus.h"
33 #include "focus_cycle.h"
34 #include "focus_cycle_indicator.h"
35 #include "focus_cycle_popup.h"
36 #include "moveresize.h"
37 #include "frame.h"
38 #include "keyboard.h"
39 #include "mouse.h"
40 #include "extensions.h"
41 #include "menuframe.h"
42 #include "grab.h"
43 #include "group.h"
44 #include "propwin.h"
45 #include "config.h"
46 #include "mainloop.h"
47 #include "gettext.h"
48 #include "parser/parse.h"
49 #include "render/render.h"
50 #include "render/theme.h"
51
52 #ifdef HAVE_FCNTL_H
53 #  include <fcntl.h>
54 #endif
55 #ifdef HAVE_SIGNAL_H
56 #  include <signal.h>
57 #endif
58 #ifdef HAVE_STDLIB_H
59 #  include <stdlib.h>
60 #endif
61 #ifdef HAVE_LOCALE_H
62 #  include <locale.h>
63 #endif
64 #ifdef HAVE_SYS_STAT_H
65 #  include <sys/stat.h>
66 #  include <sys/types.h>
67 #endif
68 #ifdef HAVE_SYS_WAIT_H
69 #  include <sys/types.h>
70 #  include <sys/wait.h>
71 #endif
72 #ifdef HAVE_UNISTD_H
73 #  include <unistd.h>
74 #endif
75 #include <errno.h>
76
77 #include <X11/cursorfont.h>
78 #if USE_XCURSOR
79 #include <X11/Xcursor/Xcursor.h>
80 #endif
81
82 #include <X11/Xlib.h>
83 #include <X11/keysym.h>
84
85
86 RrInstance *ob_rr_inst;
87 RrTheme    *ob_rr_theme;
88 ObMainLoop *ob_main_loop;
89 Display    *ob_display;
90 gint        ob_screen;
91 gboolean    ob_replace_wm = FALSE;
92 gboolean    ob_sm_use = TRUE;
93 gchar      *ob_sm_id = NULL;
94 gchar      *ob_sm_save_file = NULL;
95 gboolean    ob_sm_restore = TRUE;
96 gboolean    ob_debug_xinerama = FALSE;
97
98 static ObState   state;
99 static gboolean  xsync = FALSE;
100 static gboolean  reconfigure = FALSE;
101 static gboolean  restart = FALSE;
102 static gchar    *restart_path = NULL;
103 static Cursor    cursors[OB_NUM_CURSORS];
104 static KeyCode   keys[OB_NUM_KEYS];
105 static gint      exitcode = 0;
106 static guint     remote_control = 0;
107 static gboolean  being_replaced = FALSE;
108
109 static void signal_handler(gint signal, gpointer data);
110 static void remove_args(gint *argc, gchar **argv, gint index, gint num);
111 static void parse_env();
112 static void parse_args(gint *argc, gchar **argv);
113 static Cursor load_cursor(const gchar *name, guint fontval);
114
115 gint main(gint argc, gchar **argv)
116 {
117     gchar *program_name;
118
119     state = OB_STATE_STARTING;
120
121     /* initialize the locale */
122     if (!setlocale(LC_ALL, ""))
123         g_message("Couldn't set locale from environment.");
124     bindtextdomain(PACKAGE_NAME, LOCALEDIR);
125     bind_textdomain_codeset(PACKAGE_NAME, "UTF-8");
126     textdomain(PACKAGE_NAME);
127
128     if (chdir(g_get_home_dir()) == -1)
129         g_message(_("Unable to change to home directory '%s': %s"),
130                   g_get_home_dir(), g_strerror(errno));
131      
132     /* parse the command line args, which can change the argv[0] */
133     parse_args(&argc, argv);
134     /* parse the environment variables */
135     parse_env();
136
137     program_name = g_path_get_basename(argv[0]);
138     g_set_prgname(program_name);
139
140     if (!remote_control) {
141         parse_paths_startup();
142
143         session_startup(argc, argv);
144     }
145
146
147     ob_display = XOpenDisplay(NULL);
148     if (ob_display == NULL)
149         ob_exit_with_error(_("Failed to open the display from the DISPLAY environment variable."));
150     if (fcntl(ConnectionNumber(ob_display), F_SETFD, 1) == -1)
151         ob_exit_with_error("Failed to set display as close-on-exec");
152
153     if (remote_control) {
154         prop_startup();
155
156         /* Send client message telling the OB process to:
157          * remote_control = 1 -> reconfigure 
158          * remote_control = 2 -> restart */
159         PROP_MSG(RootWindow(ob_display, ob_screen),
160                  ob_control, remote_control, 0, 0, 0);
161         XCloseDisplay(ob_display);
162         exit(EXIT_SUCCESS);
163     }
164
165     ob_main_loop = ob_main_loop_new(ob_display);
166
167     /* set up signal handler */
168     ob_main_loop_signal_add(ob_main_loop, SIGUSR1, signal_handler, NULL, NULL);
169     ob_main_loop_signal_add(ob_main_loop, SIGUSR2, signal_handler, NULL, NULL);
170     ob_main_loop_signal_add(ob_main_loop, SIGTERM, signal_handler, NULL, NULL);
171     ob_main_loop_signal_add(ob_main_loop, SIGINT, signal_handler, NULL, NULL);
172     ob_main_loop_signal_add(ob_main_loop, SIGHUP, signal_handler, NULL, NULL);
173     ob_main_loop_signal_add(ob_main_loop, SIGPIPE, signal_handler, NULL, NULL);
174     ob_main_loop_signal_add(ob_main_loop, SIGCHLD, signal_handler, NULL, NULL);
175
176     ob_screen = DefaultScreen(ob_display);
177
178     ob_rr_inst = RrInstanceNew(ob_display, ob_screen);
179     if (ob_rr_inst == NULL)
180         ob_exit_with_error(_("Failed to initialize the obrender library."));
181
182     XSynchronize(ob_display, xsync);
183
184     /* check for locale support */
185     if (!XSupportsLocale())
186         g_message(_("X server does not support locale."));
187     if (!XSetLocaleModifiers(""))
188         g_message(_("Cannot set locale modifiers for the X server."));
189
190     /* set our error handler */
191     XSetErrorHandler(xerror_handler);
192
193     /* set the DISPLAY environment variable for any lauched children, to the
194        display we're using, so they open in the right place. */
195     putenv(g_strdup_printf("DISPLAY=%s", DisplayString(ob_display)));
196
197     /* create available cursors */
198     cursors[OB_CURSOR_NONE] = None;
199     cursors[OB_CURSOR_POINTER] = load_cursor("left_ptr", XC_left_ptr);
200     cursors[OB_CURSOR_BUSYPOINTER] = load_cursor("left_ptr_watch",XC_left_ptr);
201     cursors[OB_CURSOR_BUSY] = load_cursor("watch", XC_watch);
202     cursors[OB_CURSOR_MOVE] = load_cursor("fleur", XC_fleur);
203     cursors[OB_CURSOR_NORTH] = load_cursor("top_side", XC_top_side);
204     cursors[OB_CURSOR_NORTHEAST] = load_cursor("top_right_corner",
205                                                XC_top_right_corner);
206     cursors[OB_CURSOR_EAST] = load_cursor("right_side", XC_right_side);
207     cursors[OB_CURSOR_SOUTHEAST] = load_cursor("bottom_right_corner",
208                                                XC_bottom_right_corner);
209     cursors[OB_CURSOR_SOUTH] = load_cursor("bottom_side", XC_bottom_side);
210     cursors[OB_CURSOR_SOUTHWEST] = load_cursor("bottom_left_corner",
211                                                XC_bottom_left_corner);
212     cursors[OB_CURSOR_WEST] = load_cursor("left_side", XC_left_side);
213     cursors[OB_CURSOR_NORTHWEST] = load_cursor("top_left_corner",
214                                                XC_top_left_corner);
215
216
217     prop_startup(); /* get atoms values for the display */
218     extensions_query_all(); /* find which extensions are present */
219
220     if (screen_annex()) { /* it will be ours! */
221         do {
222             modkeys_startup(reconfigure);
223
224             /* get the keycodes for keys we use */
225             keys[OB_KEY_RETURN] = modkeys_sym_to_code(XK_Return);
226             keys[OB_KEY_ESCAPE] = modkeys_sym_to_code(XK_Escape);
227             keys[OB_KEY_LEFT] = modkeys_sym_to_code(XK_Left);
228             keys[OB_KEY_RIGHT] = modkeys_sym_to_code(XK_Right);
229             keys[OB_KEY_UP] = modkeys_sym_to_code(XK_Up);
230             keys[OB_KEY_DOWN] = modkeys_sym_to_code(XK_Down);
231
232             {
233                 ObParseInst *i;
234                 xmlDocPtr doc;
235                 xmlNodePtr node;
236
237                 /* startup the parsing so everything can register sections
238                    of the rc */
239                 i = parse_startup();
240
241                 /* start up config which sets up with the parser */
242                 config_startup(i);
243
244                 /* parse/load user options */
245                 if (parse_load_rc(NULL, &doc, &node)) {
246                     parse_tree(i, doc, node->xmlChildrenNode);
247                     parse_close(doc);
248                 } else
249                     g_message(_("Unable to find a valid config file, using some simple defaults"));
250
251 /*
252                 if (config_type != NULL)
253                     PROP_SETS(RootWindow(ob_display, ob_screen),
254                               ob_config, config_type);
255 */
256
257                 /* we're done with parsing now, kill it */
258                 parse_shutdown(i);
259             }
260
261             /* load the theme specified in the rc file */
262             {
263                 RrTheme *theme;
264                 if ((theme = RrThemeNew(ob_rr_inst, config_theme, TRUE,
265                                         config_font_activewindow,
266                                         config_font_inactivewindow,
267                                         config_font_menutitle,
268                                         config_font_menuitem,
269                                         config_font_osd)))
270                 {
271                     RrThemeFree(ob_rr_theme);
272                     ob_rr_theme = theme;
273                 }
274                 if (ob_rr_theme == NULL)
275                     ob_exit_with_error(_("Unable to load a theme."));
276
277                 PROP_SETS(RootWindow(ob_display, ob_screen),
278                           ob_theme, ob_rr_theme->name);
279             }
280
281             if (reconfigure) {
282                 GList *it;
283
284                 /* update all existing windows for the new theme */
285                 for (it = client_list; it; it = g_list_next(it)) {
286                     ObClient *c = it->data;
287                     frame_adjust_theme(c->frame);
288                 }
289             }
290             event_startup(reconfigure);
291             /* focus_backup is used for stacking, so this needs to come before
292                anything that calls stacking_add */
293             focus_startup(reconfigure);
294             focus_cycle_startup(reconfigure);
295             focus_cycle_indicator_startup(reconfigure);
296             focus_cycle_popup_startup(reconfigure);
297             window_startup(reconfigure);
298             sn_startup(reconfigure);
299             screen_startup(reconfigure);
300             grab_startup(reconfigure);
301             propwin_startup(reconfigure);
302             group_startup(reconfigure);
303             client_startup(reconfigure);
304             dock_startup(reconfigure);
305             moveresize_startup(reconfigure);
306             keyboard_startup(reconfigure);
307             mouse_startup(reconfigure);
308             menu_frame_startup(reconfigure);
309             menu_startup(reconfigure);
310
311             if (!reconfigure) {
312                 guint32 xid;
313                 ObWindow *w;
314
315                 /* get all the existing windows */
316                 client_manage_all();
317                 focus_nothing();
318
319                 /* focus what was focused if a wm was already running */
320                 if (PROP_GET32(RootWindow(ob_display, ob_screen),
321                                net_active_window, window, &xid) &&
322                     (w = g_hash_table_lookup(window_map, &xid)) &&
323                     WINDOW_IS_CLIENT(w))
324                 {
325                     client_focus(WINDOW_AS_CLIENT(w));
326                 }
327             } else {
328                 GList *it;
329
330                 /* redecorate all existing windows */
331                 for (it = client_list; it; it = g_list_next(it)) {
332                     ObClient *c = it->data;
333
334                     /* the new config can change the window's decorations */
335                     client_setup_decor_and_functions(c, FALSE);
336                     /* redraw the frames */
337                     frame_adjust_area(c->frame, TRUE, TRUE, FALSE);
338                     /* the decor sizes may have changed, so the windows may
339                        end up in new positions */
340                     client_reconfigure(c);
341                 }
342             }
343
344             reconfigure = FALSE;
345
346             state = OB_STATE_RUNNING;
347             ob_main_loop_run(ob_main_loop);
348             state = OB_STATE_EXITING;
349
350             if (!reconfigure) {
351                 dock_remove_all();
352                 client_unmanage_all();
353             }
354
355             menu_shutdown(reconfigure);
356             menu_frame_shutdown(reconfigure);
357             mouse_shutdown(reconfigure);
358             keyboard_shutdown(reconfigure);
359             moveresize_shutdown(reconfigure);
360             dock_shutdown(reconfigure);
361             client_shutdown(reconfigure);
362             group_shutdown(reconfigure);
363             propwin_shutdown(reconfigure);
364             grab_shutdown(reconfigure);
365             screen_shutdown(reconfigure);
366             focus_cycle_popup_shutdown(reconfigure);
367             focus_cycle_indicator_shutdown(reconfigure);
368             focus_cycle_shutdown(reconfigure);
369             focus_shutdown(reconfigure);
370             sn_shutdown(reconfigure);
371             window_shutdown(reconfigure);
372             event_shutdown(reconfigure);
373             config_shutdown();
374             modkeys_shutdown(reconfigure);
375         } while (reconfigure);
376     }
377
378     XSync(ob_display, FALSE);
379
380     RrThemeFree(ob_rr_theme);
381     RrInstanceFree(ob_rr_inst);
382
383     session_shutdown(being_replaced);
384
385     XCloseDisplay(ob_display);
386
387     parse_paths_shutdown();
388
389     if (restart) {
390         if (restart_path != NULL) {
391             gint argcp;
392             gchar **argvp;
393             GError *err = NULL;
394
395             /* run other window manager */
396             if (g_shell_parse_argv(restart_path, &argcp, &argvp, &err)) {
397                 execvp(argvp[0], argvp);
398                 g_strfreev(argvp);
399             } else {
400                 g_message(
401                     _("Restart failed to execute new executable '%s': %s"),
402                     restart_path, err->message);
403                 g_error_free(err);
404             }
405         }
406
407         /* we remove the session arguments from argv, so put them back,
408            also don't restore the session on restart */
409         if (ob_sm_save_file != NULL || ob_sm_id != NULL) {
410             gchar **nargv;
411             gint i, l;
412
413             l = argc + 1 +
414                 (ob_sm_save_file != NULL ? 2 : 0) +
415                 (ob_sm_id != NULL ? 2 : 0);
416             nargv = g_new0(gchar*, l+1);
417             for (i = 0; i < argc; ++i)
418                 nargv[i] = argv[i];
419
420             if (ob_sm_save_file != NULL) {
421                 nargv[i++] = g_strdup("--sm-save-file");
422                 nargv[i++] = ob_sm_save_file;
423             }
424             if (ob_sm_id != NULL) {
425                 nargv[i++] = g_strdup("--sm-client-id");
426                 nargv[i++] = ob_sm_id;
427             }
428             nargv[i++] = g_strdup("--sm-no-load");
429             g_assert(i == l);
430             argv = nargv;
431         }
432
433         /* re-run me */
434         execvp(argv[0], argv); /* try how we were run */
435         execlp(argv[0], program_name, (gchar*)NULL); /* last resort */
436     }
437
438     /* free stuff passed in from the command line or environment */
439     g_free(ob_sm_save_file);
440     g_free(ob_sm_id);
441     g_free(program_name);
442      
443     return exitcode;
444 }
445
446 static void signal_handler(gint signal, gpointer data)
447 {
448     switch (signal) {
449     case SIGUSR1:
450         ob_debug("Caught signal %d. Restarting.\n", signal);
451         ob_restart();
452         break;
453     case SIGUSR2:
454         ob_debug("Caught signal %d. Reconfiguring.\n", signal);
455         ob_reconfigure(); 
456         break;
457     case SIGCHLD:
458         /* reap children */
459         while (waitpid(-1, NULL, WNOHANG) > 0);
460         break;
461     default:
462         ob_debug("Caught signal %d. Exiting.\n", signal);
463         /* TERM and INT return a 0 code */
464         ob_exit(!(signal == SIGTERM || signal == SIGINT));
465     }
466 }
467
468 static void print_version()
469 {
470     g_print("Openbox %s\n", PACKAGE_VERSION);
471     g_print(_("Copyright (c)"));
472     g_print(" 2007        Mikael Magnusson\n");
473     g_print(_("Copyright (c)"));
474     g_print(" 2003-2007   Dana Jansens\n\n");
475     g_print("This program comes with ABSOLUTELY NO WARRANTY.\n");
476     g_print("This is free software, and you are welcome to redistribute it\n");
477     g_print("under certain conditions. See the file COPYING for details.\n\n");
478 }
479
480 static void print_help()
481 {
482     g_print(_("Syntax: openbox [options]\n"));
483     g_print(_("\nOptions:\n"));
484     g_print(_("  --help              Display this help and exit\n"));
485     g_print(_("  --version           Display the version and exit\n"));
486     g_print(_("  --replace           Replace the currently running window manager\n"));
487     g_print(_("  --sm-disable        Disable connection to the session manager\n"));
488     g_print(_("\nPassing messages to a running Openbox instance:\n"));
489     g_print(_("  --reconfigure       Reload Openbox's configuration\n"));
490     g_print(_("  --restart           Restart Openbox\n"));
491     g_print(_("\nDebugging options:\n"));
492     g_print(_("  --sync              Run in synchronous mode\n"));
493     g_print(_("  --debug             Display debugging output\n"));
494     g_print(_("  --debug-focus       Display debugging output for focus handling\n"));
495     g_print(_("  --debug-xinerama    Split the display into fake xinerama screens\n"));
496     g_print(_("\nPlease report bugs at %s\n"), PACKAGE_BUGREPORT);
497 }
498
499 static void remove_args(gint *argc, gchar **argv, gint index, gint num)
500 {
501     gint i;
502
503     for (i = index; i < *argc - num; ++i)
504         argv[i] = argv[i+num];
505     for (; i < *argc; ++i)
506         argv[i] = NULL;
507     *argc -= num;
508 }
509
510 static void parse_env()
511 {
512     /* unset this so we don't pass it on unknowingly */
513     unsetenv("DESKTOP_STARTUP_ID");
514 }
515
516 static void parse_args(gint *argc, gchar **argv)
517 {
518     gint i;
519
520     for (i = 1; i < *argc; ++i) {
521         if (!strcmp(argv[i], "--version")) {
522             print_version();
523             exit(0);
524         }
525         else if (!strcmp(argv[i], "--help")) {
526             print_help();
527             exit(0);
528         }
529         else if (!strcmp(argv[i], "--g-fatal-warnings")) {
530             g_log_set_always_fatal(G_LOG_LEVEL_CRITICAL);
531         }
532         else if (!strcmp(argv[i], "--replace")) {
533             ob_replace_wm = TRUE;
534             remove_args(argc, argv, i, 1);
535             --i; /* this arg was removed so go back */
536         }
537         else if (!strcmp(argv[i], "--sync")) {
538             xsync = TRUE;
539         }
540         else if (!strcmp(argv[i], "--debug")) {
541             ob_debug_show_output(TRUE);
542             ob_debug_enable(OB_DEBUG_SM, TRUE);
543             ob_debug_enable(OB_DEBUG_APP_BUGS, TRUE);
544         }
545         else if (!strcmp(argv[i], "--debug-focus")) {
546             ob_debug_show_output(TRUE);
547             ob_debug_enable(OB_DEBUG_SM, TRUE);
548             ob_debug_enable(OB_DEBUG_APP_BUGS, TRUE);
549             ob_debug_enable(OB_DEBUG_FOCUS, TRUE);
550         }
551         else if (!strcmp(argv[i], "--debug-xinerama")) {
552             ob_debug_xinerama = TRUE;
553         }
554         else if (!strcmp(argv[i], "--reconfigure")) {
555             remote_control = 1;
556         } else if (!strcmp(argv[i], "--restart")) {
557             remote_control = 2;
558         }
559         else if (!strcmp(argv[i], "--sm-save-file")) {
560             if (i == *argc - 1) /* no args left */
561                 /* not translated cuz it's sekret */
562                 g_printerr("--sm-save-file requires an argument\n");
563             else {
564                 ob_sm_save_file = g_strdup(argv[i+1]);
565                 remove_args(argc, argv, i, 2);
566                 --i; /* this arg was removed so go back */
567                 ob_debug_type(OB_DEBUG_SM, "--sm-save-file %s\n",
568                               ob_sm_save_file);
569             }
570         }
571         else if (!strcmp(argv[i], "--sm-client-id")) {
572             if (i == *argc - 1) /* no args left */
573                 /* not translated cuz it's sekret */
574                 g_printerr("--sm-client-id requires an argument\n");
575             else {
576                 ob_sm_id = g_strdup(argv[i+1]);
577                 remove_args(argc, argv, i, 2);
578                 --i; /* this arg was removed so go back */
579                 ob_debug_type(OB_DEBUG_SM, "--sm-client-id %s\n", ob_sm_id);
580             }
581         }
582         else if (!strcmp(argv[i], "--sm-disable")) {
583             ob_sm_use = FALSE;
584         }
585         else if (!strcmp(argv[i], "--sm-no-load")) {
586             ob_sm_restore = FALSE;
587             remove_args(argc, argv, i, 1);
588             --i; /* this arg was removed so go back */
589         }
590         else {
591             /* this is a memleak.. oh well.. heh */
592             gchar *err = g_strdup_printf
593                 (_("Invalid command line argument '%s'\n"), argv[i]);
594             ob_exit_with_error(err);
595         }
596     }
597 }
598
599 static Cursor load_cursor(const gchar *name, guint fontval)
600 {
601     Cursor c = None;
602
603 #if USE_XCURSOR
604     c = XcursorLibraryLoadCursor(ob_display, name);
605 #endif
606     if (c == None)
607         c = XCreateFontCursor(ob_display, fontval);
608     return c;
609 }
610
611 void ob_exit_with_error(const gchar *msg)
612 {
613     g_message(msg);
614     session_shutdown(TRUE);
615     exit(EXIT_FAILURE);
616 }
617
618 void ob_restart_other(const gchar *path)
619 {
620     restart_path = g_strdup(path);
621     ob_restart();
622 }
623
624 void ob_restart()
625 {
626     restart = TRUE;
627     ob_exit(0);
628 }
629
630 void ob_reconfigure()
631 {
632     reconfigure = TRUE;
633     ob_exit(0);
634 }
635
636 void ob_exit(gint code)
637 {
638     exitcode = code;
639     ob_main_loop_exit(ob_main_loop);
640 }
641
642 void ob_exit_replace()
643 {
644     exitcode = 0;
645     being_replaced = TRUE;
646     ob_main_loop_exit(ob_main_loop);
647 }
648
649 Cursor ob_cursor(ObCursor cursor)
650 {
651     g_assert(cursor < OB_NUM_CURSORS);
652     return cursors[cursor];
653 }
654
655 KeyCode ob_keycode(ObKey key)
656 {
657     g_assert(key < OB_NUM_KEYS);
658     return keys[key];
659 }
660
661 ObState ob_state()
662 {
663     return state;
664 }