openbox/openbox.c

   1 #include "debug.h"
   2 #include "openbox.h"
   3 #include "session.h"
   4 #include "dock.h"
   5 #include "event.h"
   6 #include "menu.h"
   7 #include "client.h"
   8 #include "xerror.h"
   9 #include "prop.h"
  10 #include "screen.h"
  11 #include "startupnotify.h"
  12 #include "focus.h"
  13 #include "moveresize.h"
  14 #include "frame.h"
  15 #include "keyboard.h"
  16 #include "mouse.h"
  17 #include "extensions.h"
  18 #include "menuframe.h"
  19 #include "grab.h"
  20 #include "group.h"
  21 #include "config.h"
  22 #include "mainloop.h"
  23 #include "gettext.h"
  24 #include "parser/parse.h"
  25 #include "render/render.h"
  26 #include "render/theme.h"
  27
  28 #ifdef HAVE_FCNTL_H
  29 #  include <fcntl.h>
  30 #endif
  31 #ifdef HAVE_SIGNAL_H
  32 #  include <signal.h>
  33 #endif
  34 #ifdef HAVE_STDLIB_H
  35 #  include <stdlib.h>
  36 #endif
  37 #ifdef HAVE_LOCALE_H
  38 #  include <locale.h>
  39 #endif
  40 #ifdef HAVE_SYS_STAT_H
  41 #  include <sys/stat.h>
  42 #  include <sys/types.h>
  43 #endif
  44 #ifdef HAVE_UNISTD_H
  45 #  include <unistd.h>
  46 #endif
  47
  48 #include <X11/cursorfont.h>
  49
  50 RrInstance *ob_rr_inst;
  51 RrTheme    *ob_rr_theme;
  52 ObMainLoop *ob_main_loop;
  53 Display    *ob_display;
  54 gint        ob_screen;
  55 gboolean    ob_replace_wm;
  56
  57 static ObState   state;
  58 static gboolean  xsync;
  59 static gboolean  reconfigure;
  60 static gboolean  restart;
  61 static char     *restart_path;
  62 static Cursor    cursors[OB_NUM_CURSORS];
  63 static KeyCode   keys[OB_NUM_KEYS];
  64
  65 static void signal_handler(int signal, gpointer data);
  66 static void parse_args(int argc, char **argv);
  67
  68 int main(int argc, char **argv)
  69 {
  70 #ifdef DEBUG
  71     ob_debug_show_output(TRUE);
  72 #endif
  73
  74     state = OB_STATE_STARTING;
  75
  76     /* initialize the locale */
  77     if (!setlocale(LC_ALL, ""))
  78         g_warning("Couldn't set locale from environment.\n");
  79     bindtextdomain(PACKAGE_NAME, LOCALEDIR);
  80     bind_textdomain_codeset(PACKAGE_NAME, "UTF-8");
  81     textdomain(PACKAGE_NAME);
  82
  83     g_set_prgname(argv[0]);
  84
  85     parse_paths_startup();
  86
  87     session_startup(&argc, &argv);
  88
  89     /* parse out command line args */
  90     parse_args(argc, argv);
  91
  92     ob_display = XOpenDisplay(NULL);
  93     if (ob_display == NULL)
  94         ob_exit_with_error("Failed to open the display.");
  95     if (fcntl(ConnectionNumber(ob_display), F_SETFD, 1) == -1)
  96         ob_exit_with_error("Failed to set display as close-on-exec.");
  97
  98     ob_main_loop = ob_main_loop_new(ob_display);
  99
 100     /* set up signal handler */
 101     ob_main_loop_signal_add(ob_main_loop, SIGUSR1, signal_handler, NULL, NULL);
 102     ob_main_loop_signal_add(ob_main_loop, SIGUSR2, signal_handler, NULL, NULL);
 103     ob_main_loop_signal_add(ob_main_loop, SIGTERM, signal_handler, NULL, NULL);
 104     ob_main_loop_signal_add(ob_main_loop, SIGINT, signal_handler, NULL, NULL);
 105     ob_main_loop_signal_add(ob_main_loop, SIGHUP, signal_handler, NULL, NULL);
 106     ob_main_loop_signal_add(ob_main_loop, SIGPIPE, signal_handler, NULL, NULL);
 107
 108     ob_screen = DefaultScreen(ob_display);
 109
 110     ob_rr_inst = RrInstanceNew(ob_display, ob_screen);
 111     if (ob_rr_inst == NULL)
 112         ob_exit_with_error("Failed to initialize the render library.");
 113
 114     /* XXX fork self onto other screens */
 115
 116     XSynchronize(ob_display, xsync);
 117
 118     /* check for locale support */
 119     if (!XSupportsLocale())
 120         g_warning("X server does not support locale.");
 121     if (!XSetLocaleModifiers(""))
 122         g_warning("Cannot set locale modifiers for the X server.");
 123
 124     /* set our error handler */
 125     XSetErrorHandler(xerror_handler);
 126
 127     /* set the DISPLAY environment variable for any lauched children, to the
 128        display we're using, so they open in the right place. */
 129     putenv(g_strdup_printf("DISPLAY=%s", DisplayString(ob_display)));
 130
 131     /* create available cursors */
 132     cursors[OB_CURSOR_NONE] = None;
 133     cursors[OB_CURSOR_POINTER] =
 134         XCreateFontCursor(ob_display, XC_left_ptr);
 135     cursors[OB_CURSOR_BUSY] =
 136         XCreateFontCursor(ob_display, XC_watch);
 137     cursors[OB_CURSOR_MOVE] =
 138         XCreateFontCursor(ob_display, XC_fleur);
 139     cursors[OB_CURSOR_NORTH] =
 140         XCreateFontCursor(ob_display, XC_top_side);
 141     cursors[OB_CURSOR_NORTHEAST] =
 142         XCreateFontCursor(ob_display, XC_top_right_corner);
 143     cursors[OB_CURSOR_EAST] =
 144         XCreateFontCursor(ob_display, XC_right_side);
 145     cursors[OB_CURSOR_SOUTHEAST] =
 146         XCreateFontCursor(ob_display, XC_bottom_right_corner);
 147     cursors[OB_CURSOR_SOUTH] =
 148         XCreateFontCursor(ob_display, XC_bottom_side);
 149     cursors[OB_CURSOR_SOUTHWEST] =
 150         XCreateFontCursor(ob_display, XC_bottom_left_corner);
 151     cursors[OB_CURSOR_WEST] =
 152         XCreateFontCursor(ob_display, XC_left_side);
 153     cursors[OB_CURSOR_NORTHWEST] =
 154         XCreateFontCursor(ob_display, XC_top_left_corner);
 155
 156     /* create available keycodes */
 157     keys[OB_KEY_RETURN] =
 158         XKeysymToKeycode(ob_display, XStringToKeysym("Return"));
 159     keys[OB_KEY_ESCAPE] =
 160         XKeysymToKeycode(ob_display, XStringToKeysym("Escape"));
 161     keys[OB_KEY_LEFT] =
 162         XKeysymToKeycode(ob_display, XStringToKeysym("Left"));
 163     keys[OB_KEY_RIGHT] =
 164         XKeysymToKeycode(ob_display, XStringToKeysym("Right"));
 165     keys[OB_KEY_UP] =
 166         XKeysymToKeycode(ob_display, XStringToKeysym("Up"));
 167     keys[OB_KEY_DOWN] =
 168         XKeysymToKeycode(ob_display, XStringToKeysym("Down"));
 169
 170     prop_startup(); /* get atoms values for the display */
 171     extensions_query_all(); /* find which extensions are present */
 172
 173     if (screen_annex()) { /* it will be ours! */
 174         do {
 175             {
 176                 ObParseInst *i;
 177                 xmlDocPtr doc;
 178                 xmlNodePtr node;
 179
 180                 /* startup the parsing so everything can register sections
 181                    of the rc */
 182                 i = parse_startup();
 183
 184                 config_startup(i);
 185                 /* parse/load user options */
 186                 if (parse_load_rc(&doc, &node))
 187                     parse_tree(i, doc, node->xmlChildrenNode);
 188                 /* we're done with parsing now, kill it */
 189                 xmlFreeDoc(doc);
 190                 parse_shutdown(i);
 191             }
 192
 193             /* load the theme specified in the rc file */
 194             {
 195                 RrTheme *theme;
 196                 if ((theme = RrThemeNew(ob_rr_inst, config_theme))) {
 197                     RrThemeFree(ob_rr_theme);
 198                     ob_rr_theme = theme;
 199                 }
 200                 if (ob_rr_theme == NULL)
 201                     ob_exit_with_error("Unable to load a theme.");
 202             }
 203
 204             if (reconfigure) {
 205                 GList *it;
 206
 207                 /* update all existing windows for the new theme */
 208                 for (it = client_list; it; it = g_list_next(it)) {
 209                     ObClient *c = it->data;
 210                     frame_adjust_theme(c->frame);
 211                 }
 212             }
 213             event_startup(reconfigure);
 214             /* focus_backup is used for stacking, so this needs to come before
 215                anything that calls stacking_add */
 216             focus_startup(reconfigure);
 217             window_startup(reconfigure);
 218             sn_startup(reconfigure);
 219             screen_startup(reconfigure);
 220             grab_startup(reconfigure);
 221             group_startup(reconfigure);
 222             client_startup(reconfigure);
 223             dock_startup(reconfigure);
 224             moveresize_startup(reconfigure);
 225             keyboard_startup(reconfigure);
 226             mouse_startup(reconfigure);
 227             menu_startup(reconfigure);
 228
 229             if (!reconfigure) {
 230                 /* get all the existing windows */
 231                 client_manage_all();
 232             } else {
 233                 GList *it;
 234
 235                 /* redecorate all existing windows */
 236                 for (it = client_list; it; it = g_list_next(it)) {
 237                     ObClient *c = it->data;
 238                     frame_adjust_area(c->frame, TRUE, TRUE, FALSE);
 239                 }
 240             }
 241
 242             reconfigure = FALSE;
 243
 244             state = OB_STATE_RUNNING;
 245             ob_main_loop_run(ob_main_loop);
 246             state = OB_STATE_EXITING;
 247
 248             if (!reconfigure) {
 249                 dock_remove_all();
 250                 client_unmanage_all();
 251             }
 252
 253             menu_shutdown(reconfigure);
 254             mouse_shutdown(reconfigure);
 255             keyboard_shutdown(reconfigure);
 256             moveresize_shutdown(reconfigure);
 257             dock_shutdown(reconfigure);
 258             client_shutdown(reconfigure);
 259             group_shutdown(reconfigure);
 260             grab_shutdown(reconfigure);
 261             screen_shutdown(reconfigure);
 262             focus_shutdown(reconfigure);
 263             sn_shutdown(reconfigure);
 264             window_shutdown(reconfigure);
 265             event_shutdown(reconfigure);
 266             config_shutdown();
 267         } while (reconfigure);
 268     }
 269
 270     RrThemeFree(ob_rr_theme);
 271     RrInstanceFree(ob_rr_inst);
 272
 273     session_shutdown();
 274
 275     XCloseDisplay(ob_display);
 276
 277     parse_paths_shutdown();
 278
 279     if (restart) {
 280         if (restart_path != NULL) {
 281             int argcp;
 282             char **argvp;
 283             GError *err = NULL;
 284
 285             /* run other shit */
 286             if (g_shell_parse_argv(restart_path, &argcp, &argvp, &err)) {
 287                 execvp(argvp[0], argvp);
 288                 g_strfreev(argvp);
 289             } else {
 290                 g_warning("failed to execute '%s': %s", restart_path,
 291                           err->message);
 292             }
 293         }
 294
 295         /* re-run me */
 296         execvp(argv[0], argv); /* try how we were run */
 297         execlp(argv[0], g_path_get_basename(argv[0])); /* last resort */
 298     }
 299
 300     return 0;
 301 }
 302
 303 static void signal_handler(int signal, gpointer data)
 304 {
 305     if (signal == SIGUSR1) {
 306         fprintf(stderr, "Caught signal %d. Restarting.\n", signal);
 307         ob_restart();
 308     } else if (signal == SIGUSR2) {
 309         fprintf(stderr, "Caught signal %d. Reconfiguring.\n", signal);
 310         ob_reconfigure();
 311     } else {
 312         fprintf(stderr, "Caught signal %d. Exiting.\n", signal);
 313         ob_exit();
 314     }
 315 }
 316
 317 static void print_version()
 318 {
 319     g_print("Openbox %s\n\n", PACKAGE_VERSION);
 320     g_print("This program comes with ABSOLUTELY NO WARRANTY.\n");
 321     g_print("This is free software, and you are welcome to redistribute it\n");
 322     g_print("under certain conditions. See the file COPYING for details.\n\n");
 323 }
 324
 325 static void print_help()
 326 {
 327     print_version();
 328     g_print("Syntax: openbox [options]\n\n");
 329     g_print("Options:\n\n");
 330 #ifdef USE_SM
 331     g_print("  --sm-disable        Disable connection to session manager\n");
 332     g_print("  --sm-client-id ID   Specify session management ID\n");
 333     g_print("  --sm-save-file FILE Specify file to load a saved session\n"
 334             "                      from\n");
 335 #endif
 336     g_print("  --replace           Replace the currently running window "
 337             "manager\n");
 338     g_print("  --help              Display this help and exit\n");
 339     g_print("  --version           Display the version and exit\n");
 340     g_print("  --sync              Run in synchronous mode (this is slow and\n"
 341             "                      meant for debugging X routines)\n");
 342     g_print("  --debug             Display debugging output\n");
 343     g_print("\nPlease report bugs at %s\n", PACKAGE_BUGREPORT);
 344 }
 345
 346 static void parse_args(int argc, char **argv)
 347 {
 348     int i;
 349
 350     for (i = 1; i < argc; ++i) {
 351         if (!strcmp(argv[i], "--version")) {
 352             print_version();
 353             exit(0);
 354         } else if (!strcmp(argv[i], "--help")) {
 355             print_help();
 356             exit(0);
 357         } else if (!strcmp(argv[i], "--g-fatal-warnings")) {
 358             g_log_set_always_fatal(G_LOG_LEVEL_CRITICAL);
 359         } else if (!strcmp(argv[i], "--replace")) {
 360             ob_replace_wm = TRUE;
 361         } else if (!strcmp(argv[i], "--sync")) {
 362             xsync = TRUE;
 363         } else if (!strcmp(argv[i], "--debug")) {
 364             ob_debug_show_output(TRUE);
 365         } else {
 366             g_printerr("Invalid option: '%s'\n\n", argv[i]);
 367             print_help();
 368             exit(1);
 369         }
 370     }
 371 }
 372
 373 void ob_exit_with_error(gchar *msg)
 374 {
 375     g_critical(msg);
 376     session_shutdown();
 377     exit(EXIT_FAILURE);
 378 }
 379
 380 void ob_restart_other(const gchar *path)
 381 {
 382     restart_path = g_strdup(path);
 383     ob_restart();
 384 }
 385
 386 void ob_restart()
 387 {
 388     restart = TRUE;
 389     ob_exit();
 390 }
 391
 392 void ob_reconfigure()
 393 {
 394     reconfigure = TRUE;
 395     ob_exit();
 396 }
 397
 398 void ob_exit()
 399 {
 400     ob_main_loop_exit(ob_main_loop);
 401 }
 402
 403 Cursor ob_cursor(ObCursor cursor)
 404 {
 405     g_assert(cursor < OB_NUM_CURSORS);
 406     return cursors[cursor];
 407 }
 408
 409 KeyCode ob_keycode(ObKey key)
 410 {
 411     g_assert(key < OB_NUM_KEYS);
 412     return keys[key];
 413 }
 414
 415 ObState ob_state()
 416 {
 417     return state;
 418 }