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