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     = FALSE;
  53 Cursors  ob_cursors;
  54 char    *ob_rc_path  = NULL;
  55
  56 void signal_handler(const ObEvent *e, void *data);
  57 void parse_args(int argc, char **argv);
  58
  59 int main(int argc, char **argv)
  60 {
  61     struct sigaction action;
  62     sigset_t sigset;
  63
  64     ob_state = State_Starting;
  65
  66     /* initialize the locale */
  67     if (!setlocale(LC_ALL, ""))
  68         g_warning("Couldn't set locale from environment.\n");
  69     bindtextdomain(PACKAGE, LOCALEDIR);
  70     bind_textdomain_codeset(PACKAGE, "UTF-8");
  71     textdomain(PACKAGE);
  72
  73     /* start our event dispatcher and register for signals */
  74     dispatch_startup();
  75     dispatch_register(Event_Signal, signal_handler, NULL);
  76
  77     /* set up signal handler */
  78     sigemptyset(&sigset);
  79     action.sa_handler = dispatch_signal;
  80     action.sa_mask = sigset;
  81     action.sa_flags = SA_NOCLDSTOP | SA_NODEFER;
  82     sigaction(SIGUSR1, &action, (struct sigaction *) NULL);
  83     sigaction(SIGPIPE, &action, (struct sigaction *) NULL);
  84     sigaction(SIGSEGV, &action, (struct sigaction *) NULL);
  85     sigaction(SIGFPE, &action, (struct sigaction *) NULL);
  86     sigaction(SIGTERM, &action, (struct sigaction *) NULL);
  87     sigaction(SIGINT, &action, (struct sigaction *) NULL);
  88     sigaction(SIGHUP, &action, (struct sigaction *) NULL);
  89     sigaction(SIGCHLD, &action, (struct sigaction *) NULL);
  90
  91     /* anything that died while we were restarting won't give us a SIGCHLD */
  92     while (waitpid(-1, NULL, WNOHANG) > 0);
  93
  94     /* parse out command line args */
  95     parse_args(argc, argv);
  96
  97     ob_display = XOpenDisplay(NULL);
  98     if (ob_display == NULL) {
  99         /* print a message and exit */
 100         g_critical("Failed to open the display.");
 101         exit(1);
 102     }
 103     if (fcntl(ConnectionNumber(ob_display), F_SETFD, 1) == -1) {
 104         /* print a message and exit */
 105         g_critical("Failed to set display as close-on-exec.");
 106         exit(1);
 107     }
 108
 109     ob_screen = DefaultScreen(ob_display);
 110     ob_root = RootWindow(ob_display, ob_screen);
 111
 112     /* XXX fork self onto other screens */
 113
 114     XSynchronize(ob_display, ob_sync);
 115
 116     /* check for locale support */
 117     if (!XSupportsLocale())
 118         g_warning("X server does not support locale.");
 119     if (!XSetLocaleModifiers(""))
 120         g_warning("Cannot set locale modifiers for the X server.");
 121
 122     /* set our error handler */
 123     XSetErrorHandler(xerror_handler);
 124
 125     /* set the DISPLAY environment variable for any lauched children, to the
 126        display we're using, so they open in the right place. */
 127     putenv(g_strdup_printf("DISPLAY=%s", DisplayString(ob_display)));
 128
 129     ob_cursors.left_ptr = XCreateFontCursor(ob_display, XC_left_ptr);
 130     ob_cursors.ll_angle = XCreateFontCursor(ob_display, XC_ll_angle);
 131     ob_cursors.lr_angle = XCreateFontCursor(ob_display, XC_lr_angle);
 132
 133     prop_startup(); /* get atoms values for the display */
 134     extensions_query_all(); /* find which extensions are present */
 135
 136     if (screen_annex()) { /* it will be ours! */
 137         timer_startup();
 138         render_startup();
 139         font_startup();
 140         themerc_startup();
 141         engine_startup(themerc_engine);
 142         event_startup();
 143         screen_startup();
 144         focus_startup();
 145         client_startup();
 146         grab_startup();
 147         plugin_startup();
 148
 149         /* XXX load all plugins!! */
 150         plugin_open("focus");
 151         plugin_open("keyboard");
 152         plugin_open("mouse");
 153         plugin_open("placement");
 154         plugin_open("resistance");
 155
 156         /* get all the existing windows */
 157         client_manage_all();
 158
 159         ob_state = State_Running;
 160         while (!ob_shutdown)
 161             event_loop();
 162         ob_state = State_Exiting;
 163
 164         client_unmanage_all();
 165
 166         plugin_shutdown(); /* calls all the plugins' shutdown functions */
 167         grab_shutdown();
 168         client_shutdown();
 169         focus_shutdown();
 170         screen_shutdown();
 171         event_shutdown();
 172         engine_shutdown();
 173         themerc_shutdown();
 174         render_shutdown();
 175         timer_shutdown();
 176     }
 177
 178     dispatch_shutdown();
 179
 180     XCloseDisplay(ob_display);
 181
 182     if (ob_restart) {
 183         if (ob_restart_path != NULL) {
 184             int argcp;
 185             char **argvp;
 186             GError *err = NULL;
 187
 188             /* run other shit */
 189             if (g_shell_parse_argv(ob_restart_path, &argcp, &argvp, &err)) {
 190                 execvp(argvp[0], argvp);
 191                 g_strfreev(argvp);
 192             } else {
 193                 g_warning("failed to execute '%s': %s", ob_restart_path,
 194                           err->message);
 195             }
 196         }
 197
 198         /* re-run me */
 199         execvp(argv[0], argv); /* try how we were run */
 200         execlp(BINARY, BINARY, NULL); /* try this as a last resort */
 201     }
 202
 203     return 0;
 204 }
 205
 206 void signal_handler(const ObEvent *e, void *data)
 207 {
 208     int s;
 209
 210     s = e->data.s.signal;
 211     switch (s) {
 212     case SIGUSR1:
 213         g_message("Caught SIGUSR1 signal. Restarting.");
 214         ob_shutdown = ob_restart = TRUE;
 215         break;
 216
 217     case SIGCHLD:
 218         wait(NULL);
 219         break;
 220
 221     case SIGHUP:
 222     case SIGINT:
 223     case SIGTERM:
 224     case SIGPIPE:
 225         g_message("Caught signal %d. Exiting.", s);
 226         ob_shutdown = TRUE;
 227         break;
 228
 229     case SIGFPE:
 230     case SIGSEGV:
 231         g_error("Caught signal %d. Aborting and dumping core.", s);
 232     }
 233 }
 234
 235 void print_version()
 236 {
 237     g_print("Openbox %s\n\n", VERSION);
 238     g_print("This program comes with ABSOLUTELY NO WARRANTY.\n");
 239     g_print("This is free software, and you are welcome to redistribute it\n");
 240     g_print("under certain conditions. See the file COPYING for details.\n\n");
 241 }
 242
 243 void print_help()
 244 {
 245     print_version();
 246     g_print("Syntax: %s [options]\n\n", BINARY);
 247     g_print("Options:\n\n");
 248     g_print("  -rc PATH     Specify the path to the rc file to use\n");
 249     g_print("  -help        Display this help and exit\n");
 250     g_print("  -version     Display the version and exit\n");
 251     g_print("  -sync        Run in synchronous mode (this is slow and meant\n"
 252             "               for debugging X routines)\n");
 253     g_print("\nPlease report bugs at %s\n", BUGURL);
 254 }
 255
 256 void parse_args(int argc, char **argv)
 257 {
 258     int i;
 259
 260     for (i = 1; i < argc; ++i) {
 261         if (!strcmp(argv[i], "-version")) {
 262             print_version();
 263             exit(0);
 264         } else if (!strcmp(argv[i], "-help")) {
 265             print_help();
 266             exit(0);
 267         } else if (!strcmp(argv[i], "-sync")) {
 268             ob_sync = TRUE;
 269         } else if (!strcmp(argv[i], "-rc")) {
 270             if (i == argc - 1) /* no args left */
 271                 g_printerr("-rc requires an argument\n");
 272             else
 273                 ob_rc_path = argv[++i];
 274         } else {
 275             g_printerr("Invalid option: '%s'\n\n", argv[i]);
 276             print_help();
 277             exit(1);
 278         }
 279     }
 280 }