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

   1 #include "openbox.h"
   2 #include "event.h"
   3 #include "client.h"
   4 #include "xerror.h"
   5 #include "prop.h"
   6 #include "screen.h"
   7 #include "focus.h"
   8 #include "extensions.h"
   9 #include "python.h"
  10 #include "hooks.h"
  11 #include "eventdata.h"
  12 #include "gettext.h"
  13 #include "clientwrap.h"
  14 #include "screenwrap.h"
  15 #include "kbind.h"
  16 #include "mbind.h"
  17 #include "frame.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 gboolean ob_remote   = FALSE;
  48 gboolean ob_sync     = TRUE;
  49 Cursors  ob_cursors;
  50
  51 void signal_handler(int signal);
  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     /* set up signal handler */
  68     sigemptyset(&sigset);
  69     action.sa_handler = signal_handler;
  70     action.sa_mask = sigset;
  71     action.sa_flags = SA_NOCLDSTOP | SA_NODEFER;
  72     sigaction(SIGUSR1, &action, (struct sigaction *) NULL);
  73     sigaction(SIGPIPE, &action, (struct sigaction *) NULL);
  74     sigaction(SIGSEGV, &action, (struct sigaction *) NULL);
  75     sigaction(SIGFPE, &action, (struct sigaction *) NULL);
  76     sigaction(SIGTERM, &action, (struct sigaction *) NULL);
  77     sigaction(SIGINT, &action, (struct sigaction *) NULL);
  78     sigaction(SIGHUP, &action, (struct sigaction *) NULL);
  79     sigaction(SIGCHLD, &action, (struct sigaction *) NULL);
  80
  81     /* anything that died while we were restarting won't give us a SIGCHLD */
  82     while (waitpid(-1, NULL, WNOHANG) > 0);
  83
  84     /* XXX parse out command line args */
  85     (void)argc;(void)argv;
  86
  87     /* critical warnings will exit the program */
  88     g_log_set_always_fatal(G_LOG_LEVEL_CRITICAL);
  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     if (fcntl(ConnectionNumber(ob_display), F_SETFD, 1) == -1)
  95         /* print a message and exit */
  96         g_critical("Failed to set display as close-on-exec.");
  97
  98     ob_screen = DefaultScreen(ob_display);
  99     ob_root = RootWindow(ob_display, ob_screen);
 100
 101     /* XXX fork self onto other screens */
 102
 103     XSynchronize(ob_display, ob_sync);
 104
 105     /* check for locale support */
 106     if (!XSupportsLocale())
 107         g_warning("X server does not support locale.");
 108     if (!XSetLocaleModifiers(""))
 109         g_warning("Cannot set locale modifiers for the X server.");
 110
 111     /* set our error handler */
 112     XSetErrorHandler(xerror_handler);
 113
 114     /* set the DISPLAY environment variable for any lauched children, to the
 115        display we're using, so they open in the right place. */
 116     putenv(g_strdup_printf("DISPLAY=%s", DisplayString(ob_display)));
 117
 118     ob_cursors.left_ptr = XCreateFontCursor(ob_display, XC_left_ptr);
 119     ob_cursors.ll_angle = XCreateFontCursor(ob_display, XC_ll_angle);
 120     ob_cursors.lr_angle = XCreateFontCursor(ob_display, XC_lr_angle);
 121
 122     prop_init(); /* get atoms values for the display */
 123     extensions_query_all(); /* find which extensions are present */
 124
 125     if (screen_annex()) { /* it will be ours! */
 126         frame_startup();
 127         python_startup();
 128         obexport_startup();
 129         hooks_startup();
 130         screenwrap_startup();
 131         clientwrap_startup();
 132         eventdata_startup();
 133         event_startup();
 134         screen_startup();
 135         focus_startup();
 136         client_startup();
 137         kbind_startup();
 138         mbind_startup();
 139
 140         /* load the user's settings */
 141         if (!python_import("rc"))
 142             g_warning("ERROR LOADING RC FILE");
 143
 144         LOGICALHOOK(Startup, g_quark_try_string("none"), NULL);
 145
 146         /* get all the existing windows */
 147         client_manage_all();
 148
 149         ob_state = State_Running;
 150         while (!ob_shutdown) {
 151             event_loop();
 152         }
 153         ob_state = State_Exiting;
 154
 155         client_unmanage_all();
 156
 157         LOGICALHOOK(Shutdown, g_quark_try_string("none"), NULL);
 158
 159         mbind_shutdown();
 160         kbind_shutdown();
 161         client_shutdown();
 162         screen_shutdown();
 163         event_shutdown();
 164         eventdata_shutdown();
 165         clientwrap_shutdown();
 166         screenwrap_shutdown();
 167         hooks_shutdown();
 168         obexport_shutdown();
 169         python_shutdown();
 170     }
 171
 172     XCloseDisplay(ob_display);
 173
 174     /* XXX if (ob_restart) */
 175
 176     return 0;
 177 }
 178
 179 void signal_handler(int signal)
 180 {
 181     switch (signal) {
 182     case SIGUSR1:
 183         g_message("Caught SIGUSR1 signal. Restarting.");
 184         ob_shutdown = ob_restart = TRUE;
 185         break;
 186
 187     case SIGCHLD:
 188         wait(NULL);
 189         break;
 190
 191     case SIGHUP:
 192     case SIGINT:
 193     case SIGTERM:
 194     case SIGPIPE:
 195         g_message("Caught signal %d. Exiting.", signal);
 196         ob_shutdown = TRUE;
 197         break;
 198
 199     case SIGFPE:
 200     case SIGSEGV:
 201         g_error("Caught signal %d. Aborting and dumping core.", signal);
 202     }
 203 }