Dogcows Code - chaz/openbox/blob - openbox/openbox.c

   1 #include "openbox.h"
   2 #include "event.h"
   3 #include "client.h"
   4 #include "dispatch.h"
   5 #include "xerror.h"
   6 #include "prop.h"
   7 #include "screen.h"
   8 #include "focus.h"
   9 #include "extensions.h"
  10 #include "gettext.h"
  11 #include "grab.h"
  12 #include "engine.h"
  13 #include "themerc.h"
  14 #include "plugin.h"
  15 #include "timer.h"
  16 #include "../render/render.h"
  17 #include "../render/font.h"
  18
  19 #ifdef HAVE_FCNTL_H
  20 #  include <fcntl.h>
  21 #endif
  22 #ifdef HAVE_SYS_SELECT_H
  23 #  include <sys/select.h>
  24 #endif
  25 #ifdef HAVE_SIGNAL_H
  26 #  include <signal.h>
  27 #endif
  28 #ifdef HAVE_STDLIB_H
  29 #  include <stdlib.h>
  30 #endif
  31 #ifdef HAVE_SYS_WAIT_H
  32 #  include <sys/types.h>
  33 #  include <sys/wait.h>
  34 #endif
  35 #ifdef HAVE_LOCALE_H
  36 #  include <locale.h>
  37 #endif
  38
  39 #include <X11/cursorfont.h>
  40
  41 Display *ob_display  = NULL;
  42 int      ob_screen;
  43 Window   ob_root;
  44 State    ob_state;
  45 gboolean ob_shutdown = FALSE;
  46 gboolean ob_restart  = FALSE;
  47 char    *ob_restart_path = NULL;
  48 gboolean ob_remote   = FALSE;
  49 gboolean ob_sync     = TRUE;
  50 Cursors  ob_cursors;
  51
  52 void signal_handler(const ObEvent *e, void *data);
  53
  54 int main(int argc, char **argv)
  55 {
  56     struct sigaction action;
  57     sigset_t sigset;
  58
  59     ob_state = State_Starting;
  60
  61     /* initialize the locale */
  62     if (!setlocale(LC_ALL, ""))
  63         g_warning("Couldn't set locale from environment.\n");
  64     bindtextdomain(PACKAGE, LOCALEDIR);
  65     bind_textdomain_codeset(PACKAGE, "UTF-8");
  66     textdomain(PACKAGE);
  67
  68     /* start our event dispatcher and register for signals */
  69     dispatch_startup();
  70     dispatch_register(Event_Signal, signal_handler, NULL);
  71
  72     /* set up signal handler */
  73     sigemptyset(&sigset);
  74     action.sa_handler = dispatch_signal;
  75     action.sa_mask = sigset;
  76     action.sa_flags = SA_NOCLDSTOP | SA_NODEFER;
  77     sigaction(SIGUSR1, &action, (struct sigaction *) NULL);
  78     sigaction(SIGPIPE, &action, (struct sigaction *) NULL);
  79     sigaction(SIGSEGV, &action, (struct sigaction *) NULL);
  80     sigaction(SIGFPE, &action, (struct sigaction *) NULL);
  81     sigaction(SIGTERM, &action, (struct sigaction *) NULL);
  82     sigaction(SIGINT, &action, (struct sigaction *) NULL);
  83     sigaction(SIGHUP, &action, (struct sigaction *) NULL);
  84     sigaction(SIGCHLD, &action, (struct sigaction *) NULL);
  85
  86     /* anything that died while we were restarting won't give us a SIGCHLD */
  87     while (waitpid(-1, NULL, WNOHANG) > 0);
  88
  89     /* XXX parse out command line args */
  90     (void)argc;(void)argv;
  91
  92     ob_display = XOpenDisplay(NULL);
  93     if (ob_display == NULL) {
  94         /* print a message and exit */
  95         g_critical("Failed to open the display.");
  96         exit(1);
  97     }
  98     if (fcntl(ConnectionNumber(ob_display), F_SETFD, 1) == -1) {
  99         /* print a message and exit */
 100         g_critical("Failed to set display as close-on-exec.");
 101         exit(1);
 102     }
 103
 104     ob_screen = DefaultScreen(ob_display);
 105     ob_root = RootWindow(ob_display, ob_screen);
 106
 107     /* XXX fork self onto other screens */
 108
 109     XSynchronize(ob_display, ob_sync);
 110
 111     /* check for locale support */
 112     if (!XSupportsLocale())
 113         g_warning("X server does not support locale.");
 114     if (!XSetLocaleModifiers(""))
 115         g_warning("Cannot set locale modifiers for the X server.");
 116
 117     /* set our error handler */
 118     XSetErrorHandler(xerror_handler);
 119
 120     /* set the DISPLAY environment variable for any lauched children, to the
 121        display we're using, so they open in the right place. */
 122     putenv(g_strdup_printf("DISPLAY=%s", DisplayString(ob_display)));
 123
 124     ob_cursors.left_ptr = XCreateFontCursor(ob_display, XC_left_ptr);
 125     ob_cursors.ll_angle = XCreateFontCursor(ob_display, XC_ll_angle);
 126     ob_cursors.lr_angle = XCreateFontCursor(ob_display, XC_lr_angle);
 127
 128     prop_startup(); /* get atoms values for the display */
 129     extensions_query_all(); /* find which extensions are present */
 130
 131     if (screen_annex()) { /* it will be ours! */
 132         timer_startup();
 133         render_startup();
 134         font_startup();
 135         themerc_startup();
 136         engine_startup(themerc_engine);
 137         event_startup();
 138         screen_startup();
 139         focus_startup();
 140         client_startup();
 141         grab_startup();
 142         plugin_startup();
 143
 144         /* XXX load all plugins!! */
 145         plugin_open("focus");
 146         plugin_open("keyboard");
 147         plugin_open("mouse");
 148
 149         /* get all the existing windows */
 150         client_manage_all();
 151
 152         ob_state = State_Running;
 153         while (!ob_shutdown) {
 154             event_loop();
 155         }
 156         ob_state = State_Exiting;
 157
 158         client_unmanage_all();
 159
 160         plugin_shutdown(); /* calls all the plugins' shutdown functions */
 161         grab_shutdown();
 162         client_shutdown();
 163         screen_shutdown();
 164         event_shutdown();
 165         engine_shutdown();
 166         themerc_shutdown();
 167         render_shutdown();
 168         timer_shutdown();
 169     }
 170
 171     /* reset focus to root before exiting */
 172     XSetInputFocus(ob_display, PointerRoot, RevertToNone, CurrentTime);
 173     XCloseDisplay(ob_display);
 174
 175     dispatch_shutdown();
 176
 177     /* XXX if (ob_restart) */
 178
 179     return 0;
 180 }
 181
 182 void signal_handler(const ObEvent *e, void *data)
 183 {
 184     int s;
 185
 186     s = e->data.s.signal;
 187     switch (s) {
 188     case SIGUSR1:
 189         g_message("Caught SIGUSR1 signal. Restarting.");
 190         ob_shutdown = ob_restart = TRUE;
 191         break;
 192
 193     case SIGCHLD:
 194         wait(NULL);
 195         break;
 196
 197     case SIGHUP:
 198     case SIGINT:
 199     case SIGTERM:
 200     case SIGPIPE:
 201         g_message("Caught signal %d. Exiting.", s);
 202         ob_shutdown = TRUE;
 203         break;
 204
 205     case SIGFPE:
 206     case SIGSEGV:
 207         g_error("Caught signal %d. Aborting and dumping core.", s);
 208     }
 209 }