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_SIGNAL_H
  23 #  include <signal.h>
  24 #endif
  25 #ifdef HAVE_STDLIB_H
  26 #  include <stdlib.h>
  27 #endif
  28 #ifdef HAVE_SYS_WAIT_H
  29 #  include <sys/types.h>
  30 #  include <sys/wait.h>
  31 #endif
  32 #ifdef HAVE_LOCALE_H
  33 #  include <locale.h>
  34 #endif
  35 #ifdef HAVE_UNISTD_H
  36 #  include <unistd.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     = FALSE;
  50 Cursors  ob_cursors;
  51 char    *ob_rc_path  = NULL;
  52
  53 void signal_handler(const ObEvent *e, void *data);
  54 void parse_args(int argc, char **argv);
  55
  56 int main(int argc, char **argv)
  57 {
  58     struct sigaction action;
  59     sigset_t sigset;
  60
  61     ob_state = State_Starting;
  62
  63     /* initialize the locale */
  64     if (!setlocale(LC_ALL, ""))
  65         g_warning("Couldn't set locale from environment.\n");
  66     bindtextdomain(PACKAGE, LOCALEDIR);
  67     bind_textdomain_codeset(PACKAGE, "UTF-8");
  68     textdomain(PACKAGE);
  69
  70     /* start our event dispatcher and register for signals */
  71     dispatch_startup();
  72     dispatch_register(Event_Signal, signal_handler, NULL);
  73
  74     /* set up signal handler */
  75     sigemptyset(&sigset);
  76     action.sa_handler = dispatch_signal;
  77     action.sa_mask = sigset;
  78     action.sa_flags = SA_NOCLDSTOP;
  79     sigaction(SIGUSR1, &action, (struct sigaction *) NULL);
  80     sigaction(SIGPIPE, &action, (struct sigaction *) NULL);
  81     sigaction(SIGSEGV, &action, (struct sigaction *) NULL);
  82     sigaction(SIGFPE, &action, (struct sigaction *) NULL);
  83     sigaction(SIGTERM, &action, (struct sigaction *) NULL);
  84     sigaction(SIGINT, &action, (struct sigaction *) NULL);
  85     sigaction(SIGHUP, &action, (struct sigaction *) NULL);
  86     sigaction(SIGCHLD, &action, (struct sigaction *) NULL);
  87
  88     /* anything that died while we were restarting won't give us a SIGCHLD */
  89     while (waitpid(-1, NULL, WNOHANG) > 0);
  90
  91     /* parse out command line args */
  92     parse_args(argc, argv);
  93
  94     ob_display = XOpenDisplay(NULL);
  95     if (ob_display == NULL) {
  96         /* print a message and exit */
  97         g_critical("Failed to open the display.");
  98         exit(1);
  99     }
 100     if (fcntl(ConnectionNumber(ob_display), F_SETFD, 1) == -1) {
 101         /* print a message and exit */
 102         g_critical("Failed to set display as close-on-exec.");
 103         exit(1);
 104     }
 105
 106     ob_screen = DefaultScreen(ob_display);
 107     ob_root = RootWindow(ob_display, ob_screen);
 108
 109     /* XXX fork self onto other screens */
 110
 111     XSynchronize(ob_display, ob_sync);
 112
 113     /* check for locale support */
 114     if (!XSupportsLocale())
 115         g_warning("X server does not support locale.");
 116     if (!XSetLocaleModifiers(""))
 117         g_warning("Cannot set locale modifiers for the X server.");
 118
 119     /* set our error handler */
 120     XSetErrorHandler(xerror_handler);
 121
 122     /* set the DISPLAY environment variable for any lauched children, to the
 123        display we're using, so they open in the right place. */
 124     putenv(g_strdup_printf("DISPLAY=%s", DisplayString(ob_display)));
 125
 126     ob_cursors.left_ptr = XCreateFontCursor(ob_display, XC_left_ptr);
 127     ob_cursors.ll_angle = XCreateFontCursor(ob_display, XC_ll_angle);
 128     ob_cursors.lr_angle = XCreateFontCursor(ob_display, XC_lr_angle);
 129
 130     prop_startup(); /* get atoms values for the display */
 131     extensions_query_all(); /* find which extensions are present */
 132
 133     if (screen_annex()) { /* it will be ours! */
 134         timer_startup();
 135         render_startup();
 136         font_startup();
 137         themerc_startup();
 138         engine_startup(themerc_engine);
 139         event_startup();
 140         screen_startup();
 141         focus_startup();
 142         client_startup();
 143         grab_startup();
 144         plugin_startup();
 145
 146         /* XXX load all plugins!! */
 147         plugin_open("focus");
 148         plugin_open("keyboard");
 149         plugin_open("mouse");
 150         plugin_open("placement");
 151         plugin_open("resistance");
 152
 153         /* get all the existing windows */
 154         client_manage_all();
 155
 156         ob_state = State_Running;
 157         while (!ob_shutdown)
 158             event_loop();
 159         ob_state = State_Exiting;
 160
 161         client_unmanage_all();
 162
 163         plugin_shutdown(); /* calls all the plugins' shutdown functions */
 164         grab_shutdown();
 165         client_shutdown();
 166         focus_shutdown();
 167         screen_shutdown();
 168         event_shutdown();
 169         engine_shutdown();
 170         themerc_shutdown();
 171         render_shutdown();
 172         timer_shutdown();
 173     }
 174
 175     dispatch_shutdown();
 176
 177     XCloseDisplay(ob_display);
 178
 179     if (ob_restart) {
 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(BINARY, BINARY, 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 }
 231
 232 void print_version()
 233 {
 234     g_print("Openbox %s\n\n", VERSION);
 235     g_print("This program comes with ABSOLUTELY NO WARRANTY.\n");
 236     g_print("This is free software, and you are welcome to redistribute it\n");
 237     g_print("under certain conditions. See the file COPYING for details.\n\n");
 238 }
 239
 240 void print_help()
 241 {
 242     print_version();
 243     g_print("Syntax: %s [options]\n\n", BINARY);
 244     g_print("Options:\n\n");
 245     g_print("  -rc PATH     Specify the path to the rc file to use\n");
 246     g_print("  -help        Display this help and exit\n");
 247     g_print("  -version     Display the version and exit\n");
 248     g_print("  -sync        Run in synchronous mode (this is slow and meant\n"
 249             "               for debugging X routines)\n");
 250     g_print("\nPlease report bugs at %s\n", BUGURL);
 251 }
 252
 253 void parse_args(int argc, char **argv)
 254 {
 255     int i;
 256
 257     for (i = 1; i < argc; ++i) {
 258         if (!strcmp(argv[i], "-version")) {
 259             print_version();
 260             exit(0);
 261         } else if (!strcmp(argv[i], "-help")) {
 262             print_help();
 263             exit(0);
 264         } else if (!strcmp(argv[i], "-sync")) {
 265             ob_sync = TRUE;
 266         } else if (!strcmp(argv[i], "-rc")) {
 267             if (i == argc - 1) /* no args left */
 268                 g_printerr("-rc requires an argument\n");
 269             else
 270                 ob_rc_path = argv[++i];
 271         } else {
 272             g_printerr("Invalid option: '%s'\n\n", argv[i]);
 273             print_help();
 274             exit(1);
 275         }
 276     }
 277 }