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 static gint      exitcode = 0;
  65
  66 static void signal_handler(int signal, gpointer data);
  67 static void parse_args(int argc, char **argv);
  68
  69 int main(int argc, char **argv)
  70 {
  71 #ifdef DEBUG
  72     ob_debug_show_output(TRUE);
  73 #endif
  74
  75     state = OB_STATE_STARTING;
  76
  77     /* initialize the locale */
  78     if (!setlocale(LC_ALL, ""))
  79         g_warning("Couldn't set locale from environment.\n");
  80     bindtextdomain(PACKAGE_NAME, LOCALEDIR);
  81     bind_textdomain_codeset(PACKAGE_NAME, "UTF-8");
  82     textdomain(PACKAGE_NAME);
  83
  84     g_set_prgname(argv[0]);
  85
  86     parse_paths_startup();
  87
  88     session_startup(&argc, &argv);
  89
  90     /* parse out command line args */
  91     parse_args(argc, argv);
  92
  93     ob_display = XOpenDisplay(NULL);
  94     if (ob_display == NULL)
  95         ob_exit_with_error("Failed to open the display.");
  96     if (fcntl(ConnectionNumber(ob_display), F_SETFD, 1) == -1)
  97         ob_exit_with_error("Failed to set display as close-on-exec.");
  98
  99     ob_main_loop = ob_main_loop_new(ob_display);
 100
 101     /* set up signal handler */
 102     ob_main_loop_signal_add(ob_main_loop, SIGUSR1, signal_handler, NULL, NULL);
 103     ob_main_loop_signal_add(ob_main_loop, SIGUSR2, signal_handler, NULL, NULL);
 104     ob_main_loop_signal_add(ob_main_loop, SIGTERM, signal_handler, NULL, NULL);
 105     ob_main_loop_signal_add(ob_main_loop, SIGINT, signal_handler, NULL, NULL);
 106     ob_main_loop_signal_add(ob_main_loop, SIGHUP, signal_handler, NULL, NULL);
 107     ob_main_loop_signal_add(ob_main_loop, SIGPIPE, signal_handler, NULL, NULL);
 108
 109     ob_screen = DefaultScreen(ob_display);
 110
 111     ob_rr_inst = RrInstanceNew(ob_display, ob_screen);
 112     if (ob_rr_inst == NULL)
 113         ob_exit_with_error("Failed to initialize the render library.");
 114
 115     /* XXX fork self onto other screens */
 116
 117     XSynchronize(ob_display, xsync);
 118
 119     /* check for locale support */
 120     if (!XSupportsLocale())
 121         g_warning("X server does not support locale.");
 122     if (!XSetLocaleModifiers(""))
 123         g_warning("Cannot set locale modifiers for the X server.");
 124
 125     /* set our error handler */
 126     XSetErrorHandler(xerror_handler);
 127
 128     /* set the DISPLAY environment variable for any lauched children, to the
 129        display we're using, so they open in the right place. */
 130     putenv(g_strdup_printf("DISPLAY=%s", DisplayString(ob_display)));
 131
 132     /* create available cursors */
 133     cursors[OB_CURSOR_NONE] = None;
 134     cursors[OB_CURSOR_POINTER] =
 135         XCreateFontCursor(ob_display, XC_left_ptr);
 136     cursors[OB_CURSOR_BUSY] =
 137         XCreateFontCursor(ob_display, XC_watch);
 138     cursors[OB_CURSOR_MOVE] =
 139         XCreateFontCursor(ob_display, XC_fleur);
 140     cursors[OB_CURSOR_NORTH] =
 141         XCreateFontCursor(ob_display, XC_top_side);
 142     cursors[OB_CURSOR_NORTHEAST] =
 143         XCreateFontCursor(ob_display, XC_top_right_corner);
 144     cursors[OB_CURSOR_EAST] =
 145         XCreateFontCursor(ob_display, XC_right_side);
 146     cursors[OB_CURSOR_SOUTHEAST] =
 147         XCreateFontCursor(ob_display, XC_bottom_right_corner);
 148     cursors[OB_CURSOR_SOUTH] =
 149         XCreateFontCursor(ob_display, XC_bottom_side);
 150     cursors[OB_CURSOR_SOUTHWEST] =
 151         XCreateFontCursor(ob_display, XC_bottom_left_corner);
 152     cursors[OB_CURSOR_WEST] =
 153         XCreateFontCursor(ob_display, XC_left_side);
 154     cursors[OB_CURSOR_NORTHWEST] =
 155         XCreateFontCursor(ob_display, XC_top_left_corner);
 156
 157     /* create available keycodes */
 158     keys[OB_KEY_RETURN] =
 159         XKeysymToKeycode(ob_display, XStringToKeysym("Return"));
 160     keys[OB_KEY_ESCAPE] =
 161         XKeysymToKeycode(ob_display, XStringToKeysym("Escape"));
 162     keys[OB_KEY_LEFT] =
 163         XKeysymToKeycode(ob_display, XStringToKeysym("Left"));
 164     keys[OB_KEY_RIGHT] =
 165         XKeysymToKeycode(ob_display, XStringToKeysym("Right"));
 166     keys[OB_KEY_UP] =
 167         XKeysymToKeycode(ob_display, XStringToKeysym("Up"));
 168     keys[OB_KEY_DOWN] =
 169         XKeysymToKeycode(ob_display, XStringToKeysym("Down"));
 170
 171     prop_startup(); /* get atoms values for the display */
 172     extensions_query_all(); /* find which extensions are present */
 173
 174     if (screen_annex()) { /* it will be ours! */
 175         do {
 176             {
 177                 ObParseInst *i;
 178                 xmlDocPtr doc;
 179                 xmlNodePtr node;
 180
 181                 /* startup the parsing so everything can register sections
 182                    of the rc */
 183                 i = parse_startup();
 184
 185                 config_startup(i);
 186                 /* parse/load user options */
 187                 if (parse_load_rc(&doc, &node))
 188                     parse_tree(i, doc, node->xmlChildrenNode);
 189                 /* we're done with parsing now, kill it */
 190                 xmlFreeDoc(doc);
 191                 parse_shutdown(i);
 192             }
 193
 194             /* load the theme specified in the rc file */
 195             {
 196                 RrTheme *theme;
 197                 if ((theme = RrThemeNew(ob_rr_inst, config_theme))) {
 198                     RrThemeFree(ob_rr_theme);
 199                     ob_rr_theme = theme;
 200                 }
 201                 if (ob_rr_theme == NULL)
 202                     ob_exit_with_error("Unable to load a theme.");
 203             }
 204
 205             if (reconfigure) {
 206                 GList *it;
 207
 208                 /* update all existing windows for the new theme */
 209                 for (it = client_list; it; it = g_list_next(it)) {
 210                     ObClient *c = it->data;
 211                     frame_adjust_theme(c->frame);
 212                 }
 213             }
 214             event_startup(reconfigure);
 215             /* focus_backup is used for stacking, so this needs to come before
 216                anything that calls stacking_add */
 217             focus_startup(reconfigure);
 218             window_startup(reconfigure);
 219             sn_startup(reconfigure);
 220             screen_startup(reconfigure);
 221             grab_startup(reconfigure);
 222             group_startup(reconfigure);
 223             client_startup(reconfigure);
 224             dock_startup(reconfigure);
 225             moveresize_startup(reconfigure);
 226             keyboard_startup(reconfigure);
 227             mouse_startup(reconfigure);
 228             menu_startup(reconfigure);
 229
 230             if (!reconfigure) {
 231                 /* get all the existing windows */
 232                 client_manage_all();
 233             } else {
 234                 GList *it;
 235
 236                 /* redecorate all existing windows */
 237                 for (it = client_list; it; it = g_list_next(it)) {
 238                     ObClient *c = it->data;
 239                     frame_adjust_area(c->frame, TRUE, TRUE, FALSE);
 240                 }
 241             }
 242
 243             reconfigure = FALSE;
 244
 245             state = OB_STATE_RUNNING;
 246             ob_main_loop_run(ob_main_loop);
 247             state = OB_STATE_EXITING;
 248
 249             if (!reconfigure) {
 250                 dock_remove_all();
 251                 client_unmanage_all();
 252             }
 253
 254             menu_shutdown(reconfigure);
 255             mouse_shutdown(reconfigure);
 256             keyboard_shutdown(reconfigure);
 257             moveresize_shutdown(reconfigure);
 258             dock_shutdown(reconfigure);
 259             client_shutdown(reconfigure);
 260             group_shutdown(reconfigure);
 261             grab_shutdown(reconfigure);
 262             screen_shutdown(reconfigure);
 263             focus_shutdown(reconfigure);
 264             sn_shutdown(reconfigure);
 265             window_shutdown(reconfigure);
 266             event_shutdown(reconfigure);
 267             config_shutdown();
 268         } while (reconfigure);
 269     }
 270
 271     RrThemeFree(ob_rr_theme);
 272     RrInstanceFree(ob_rr_inst);
 273
 274     session_shutdown();
 275
 276     XCloseDisplay(ob_display);
 277
 278     parse_paths_shutdown();
 279
 280     if (restart) {
 281         if (restart_path != NULL) {
 282             int argcp;
 283             char **argvp;
 284             GError *err = NULL;
 285
 286             /* run other shit */
 287             if (g_shell_parse_argv(restart_path, &argcp, &argvp, &err)) {
 288                 execvp(argvp[0], argvp);
 289                 g_strfreev(argvp);
 290             } else {
 291                 g_warning("failed to execute '%s': %s", restart_path,
 292                           err->message);
 293             }
 294         }
 295
 296         /* re-run me */
 297         execvp(argv[0], argv); /* try how we were run */
 298         execlp(argv[0], g_path_get_basename(argv[0])); /* last resort */
 299     }
 300
 301     return exitcode;
 302 }
 303
 304 static void signal_handler(int signal, gpointer data)
 305 {
 306     if (signal == SIGUSR1) {
 307         fprintf(stderr, "Caught signal %d. Restarting.\n", signal);
 308         ob_restart();
 309     } else if (signal == SIGUSR2) {
 310         fprintf(stderr, "Caught signal %d. Reconfiguring.\n", signal);
 311         ob_reconfigure();
 312     } else {
 313         fprintf(stderr, "Caught signal %d. Exiting.\n", signal);
 314         /* TERM and INT return a 0 code */
 315         ob_exit(!(signal == SIGTERM || signal == SIGINT));
 316     }
 317 }
 318
 319 static void print_version()
 320 {
 321     g_print("Openbox %s\n\n", PACKAGE_VERSION);
 322     g_print("This program comes with ABSOLUTELY NO WARRANTY.\n");
 323     g_print("This is free software, and you are welcome to redistribute it\n");
 324     g_print("under certain conditions. See the file COPYING for details.\n\n");
 325 }
 326
 327 static void print_help()
 328 {
 329     print_version();
 330     g_print("Syntax: openbox [options]\n\n");
 331     g_print("Options:\n\n");
 332 #ifdef USE_SM
 333     g_print("  --sm-disable        Disable connection to session manager\n");
 334     g_print("  --sm-client-id ID   Specify session management ID\n");
 335     g_print("  --sm-save-file FILE Specify file to load a saved session\n"
 336             "                      from\n");
 337 #endif
 338     g_print("  --replace           Replace the currently running window "
 339             "manager\n");
 340     g_print("  --help              Display this help and exit\n");
 341     g_print("  --version           Display the version and exit\n");
 342     g_print("  --sync              Run in synchronous mode (this is slow and\n"
 343             "                      meant for debugging X routines)\n");
 344     g_print("  --debug             Display debugging output\n");
 345     g_print("\nPlease report bugs at %s\n", PACKAGE_BUGREPORT);
 346 }
 347
 348 static void parse_args(int argc, char **argv)
 349 {
 350     int i;
 351
 352     for (i = 1; i < argc; ++i) {
 353         if (!strcmp(argv[i], "--version")) {
 354             print_version();
 355             exit(0);
 356         } else if (!strcmp(argv[i], "--help")) {
 357             print_help();
 358             exit(0);
 359         } else if (!strcmp(argv[i], "--g-fatal-warnings")) {
 360             g_log_set_always_fatal(G_LOG_LEVEL_CRITICAL);
 361         } else if (!strcmp(argv[i], "--replace")) {
 362             ob_replace_wm = TRUE;
 363         } else if (!strcmp(argv[i], "--sync")) {
 364             xsync = TRUE;
 365         } else if (!strcmp(argv[i], "--debug")) {
 366             ob_debug_show_output(TRUE);
 367         } else {
 368             g_printerr("Invalid option: '%s'\n\n", argv[i]);
 369             print_help();
 370             exit(1);
 371         }
 372     }
 373 }
 374
 375 void ob_exit_with_error(gchar *msg)
 376 {
 377     g_critical(msg);
 378     session_shutdown();
 379     exit(EXIT_FAILURE);
 380 }
 381
 382 void ob_restart_other(const gchar *path)
 383 {
 384     restart_path = g_strdup(path);
 385     ob_restart();
 386 }
 387
 388 void ob_restart()
 389 {
 390     restart = TRUE;
 391     ob_exit(0);
 392 }
 393
 394 void ob_reconfigure()
 395 {
 396     reconfigure = TRUE;
 397     ob_exit(0);
 398 }
 399
 400 void ob_exit(gint code)
 401 {
 402     exitcode = code;
 403     ob_main_loop_exit(ob_main_loop);
 404 }
 405
 406 Cursor ob_cursor(ObCursor cursor)
 407 {
 408     g_assert(cursor < OB_NUM_CURSORS);
 409     return cursors[cursor];
 410 }
 411
 412 KeyCode ob_keycode(ObKey key)
 413 {
 414     g_assert(key < OB_NUM_KEYS);
 415     return keys[key];
 416 }
 417
 418 ObState ob_state()
 419 {
 420     return state;
 421 }