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