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 #ifdef HAVE_UNISTD_H
  39 #  include <unistd.h>
  40 #endif
  41
  42 #include <X11/cursorfont.h>
  43
  44 Display *ob_display  = NULL;
  45 int      ob_screen;
  46 Window   ob_root;
  47 State    ob_state;
  48 gboolean ob_shutdown = FALSE;
  49 gboolean ob_restart  = FALSE;
  50 char    *ob_restart_path = NULL;
  51 gboolean ob_remote   = FALSE;
  52 gboolean ob_sync     = TRUE;
  53 Cursors  ob_cursors;
  54
  55 void signal_handler(const ObEvent *e, void *data);
  56
  57 int main(int argc, char **argv)
  58 {
  59     struct sigaction action;
  60     sigset_t sigset;
  61
  62     ob_state = State_Starting;
  63
  64     /* initialize the locale */
  65     if (!setlocale(LC_ALL, ""))
  66         g_warning("Couldn't set locale from environment.\n");
  67     bindtextdomain(PACKAGE, LOCALEDIR);
  68     bind_textdomain_codeset(PACKAGE, "UTF-8");
  69     textdomain(PACKAGE);
  70
  71     /* start our event dispatcher and register for signals */
  72     dispatch_startup();
  73     dispatch_register(Event_Signal, signal_handler, NULL);
  74
  75     /* set up signal handler */
  76     sigemptyset(&sigset);
  77     action.sa_handler = dispatch_signal;
  78     action.sa_mask = sigset;
  79     action.sa_flags = SA_NOCLDSTOP | SA_NODEFER;
  80     sigaction(SIGUSR1, &action, (struct sigaction *) NULL);
  81     sigaction(SIGPIPE, &action, (struct sigaction *) NULL);
  82     sigaction(SIGSEGV, &action, (struct sigaction *) NULL);
  83     sigaction(SIGFPE, &action, (struct sigaction *) NULL);
  84     sigaction(SIGTERM, &action, (struct sigaction *) NULL);
  85     sigaction(SIGINT, &action, (struct sigaction *) NULL);
  86     sigaction(SIGHUP, &action, (struct sigaction *) NULL);
  87     sigaction(SIGCHLD, &action, (struct sigaction *) NULL);
  88
  89     /* anything that died while we were restarting won't give us a SIGCHLD */
  90     while (waitpid(-1, NULL, WNOHANG) > 0);
  91
  92     /* XXX parse out command line args */
  93     (void)argc;(void)argv;
  94
  95     ob_display = XOpenDisplay(NULL);
  96     if (ob_display == NULL) {
  97         /* print a message and exit */
  98         g_critical("Failed to open the display.");
  99         exit(1);
 100     }
 101     if (fcntl(ConnectionNumber(ob_display), F_SETFD, 1) == -1) {
 102         /* print a message and exit */
 103         g_critical("Failed to set display as close-on-exec.");
 104         exit(1);
 105     }
 106
 107     ob_screen = DefaultScreen(ob_display);
 108     ob_root = RootWindow(ob_display, ob_screen);
 109
 110     /* XXX fork self onto other screens */
 111
 112     XSynchronize(ob_display, ob_sync);
 113
 114     /* check for locale support */
 115     if (!XSupportsLocale())
 116         g_warning("X server does not support locale.");
 117     if (!XSetLocaleModifiers(""))
 118         g_warning("Cannot set locale modifiers for the X server.");
 119
 120     /* set our error handler */
 121     XSetErrorHandler(xerror_handler);
 122
 123     /* set the DISPLAY environment variable for any lauched children, to the
 124        display we're using, so they open in the right place. */
 125     putenv(g_strdup_printf("DISPLAY=%s", DisplayString(ob_display)));
 126
 127     ob_cursors.left_ptr = XCreateFontCursor(ob_display, XC_left_ptr);
 128     ob_cursors.ll_angle = XCreateFontCursor(ob_display, XC_ll_angle);
 129     ob_cursors.lr_angle = XCreateFontCursor(ob_display, XC_lr_angle);
 130
 131     prop_startup(); /* get atoms values for the display */
 132     extensions_query_all(); /* find which extensions are present */
 133
 134     if (screen_annex()) { /* it will be ours! */
 135         timer_startup();
 136         render_startup();
 137         font_startup();
 138         themerc_startup();
 139         engine_startup(themerc_engine);
 140         event_startup();
 141         screen_startup();
 142         focus_startup();
 143         client_startup();
 144         grab_startup();
 145         plugin_startup();
 146
 147         /* XXX load all plugins!! */
 148         plugin_open("focus");
 149         plugin_open("keyboard");
 150         plugin_open("mouse");
 151
 152         /* get all the existing windows */
 153         client_manage_all();
 154
 155         ob_state = State_Running;
 156         while (!ob_shutdown)
 157             event_loop();
 158         ob_state = State_Exiting;
 159
 160         client_unmanage_all();
 161
 162         plugin_shutdown(); /* calls all the plugins' shutdown functions */
 163         grab_shutdown();
 164         client_shutdown();
 165         focus_shutdown();
 166         screen_shutdown();
 167         event_shutdown();
 168         engine_shutdown();
 169         themerc_shutdown();
 170         render_shutdown();
 171         timer_shutdown();
 172     }
 173
 174     dispatch_shutdown();
 175
 176     XCloseDisplay(ob_display);
 177
 178     if (ob_restart) {
 179         ob_restart_path = "";
 180         if (ob_restart_path != NULL) {
 181             int argcp;
 182             char **argvp;
 183             GError *err = NULL;
 184
 185             /* run other shit */
 186             if (g_shell_parse_argv(ob_restart_path, &argcp, &argvp, &err)) {
 187                 execvp(argvp[0], argvp);
 188                 g_strfreev(argvp);
 189             } else {
 190                 g_warning("failed to execute '%s': %s", ob_restart_path,
 191                           err->message);
 192             }
 193         }
 194
 195         /* re-run me */
 196         execvp(argv[0], argv); /* try how we were run */
 197         execlp("ob3", "ob3", NULL); /* try this as a last resort */
 198     }
 199
 200     return 0;
 201 }
 202
 203 void signal_handler(const ObEvent *e, void *data)
 204 {
 205     int s;
 206
 207     s = e->data.s.signal;
 208     switch (s) {
 209     case SIGUSR1:
 210         g_message("Caught SIGUSR1 signal. Restarting.");
 211         ob_shutdown = ob_restart = TRUE;
 212         break;
 213
 214     case SIGCHLD:
 215         wait(NULL);
 216         break;
 217
 218     case SIGHUP:
 219     case SIGINT:
 220     case SIGTERM:
 221     case SIGPIPE:
 222         g_message("Caught signal %d. Exiting.", s);
 223         ob_shutdown = TRUE;
 224         break;
 225
 226     case SIGFPE:
 227     case SIGSEGV:
 228         g_error("Caught signal %d. Aborting and dumping core.", s);
 229     }
 230 }