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

   1 #include "openbox.h"
   2 #include "event.h"
   3 #include "menu.h"
   4 #include "client.h"
   5 #include "dispatch.h"
   6 #include "xerror.h"
   7 #include "prop.h"
   8 #include "screen.h"
   9 #include "focus.h"
  10 #include "frame.h"
  11 #include "extensions.h"
  12 #include "parse.h"
  13 #include "grab.h"
  14 #include "plugin.h"
  15 #include "timer.h"
  16 #include "group.h"
  17 #include "config.h"
  18 #include "gettext.h"
  19 #include "render/render.h"
  20 #include "render/font.h"
  21 #include "render/theme.h"
  22
  23 #ifdef HAVE_FCNTL_H
  24 #  include <fcntl.h>
  25 #endif
  26 #ifdef HAVE_SIGNAL_H
  27 #  include <signal.h>
  28 #endif
  29 #ifdef HAVE_STDLIB_H
  30 #  include <stdlib.h>
  31 #endif
  32 #ifdef HAVE_SYS_WAIT_H
  33 #  include <sys/types.h>
  34 #  include <sys/wait.h>
  35 #endif
  36 #ifdef HAVE_LOCALE_H
  37 #  include <locale.h>
  38 #endif
  39 #ifdef HAVE_UNISTD_H
  40 #  include <unistd.h>
  41 #endif
  42 #ifdef HAVE_SYS_STAT_H
  43 #  include <sys/stat.h>
  44 #  include <sys/types.h>
  45 #endif
  46
  47 #include <X11/cursorfont.h>
  48
  49 Display *ob_display  = NULL;
  50 int      ob_screen;
  51 Window   ob_root;
  52 State    ob_state;
  53 gboolean ob_shutdown = FALSE;
  54 gboolean ob_restart  = FALSE;
  55 char    *ob_restart_path = NULL;
  56 gboolean ob_remote   = TRUE;
  57 gboolean ob_sync     = FALSE;
  58 Cursors  ob_cursors;
  59 char    *ob_rc_path  = NULL;
  60
  61 void signal_handler(const ObEvent *e, void *data);
  62 void parse_args(int argc, char **argv);
  63
  64 int main(int argc, char **argv)
  65 {
  66     struct sigaction action;
  67     sigset_t sigset;
  68     char *path;
  69     char *theme;
  70
  71     ob_state = State_Starting;
  72
  73     /* initialize the locale */
  74     if (!setlocale(LC_ALL, ""))
  75         g_warning("Couldn't set locale from environment.\n");
  76     bindtextdomain(PACKAGE_NAME, LOCALEDIR);
  77     bind_textdomain_codeset(PACKAGE_NAME, "UTF-8");
  78     textdomain(PACKAGE_NAME);
  79
  80     /* start our event dispatcher and register for signals */
  81     dispatch_startup();
  82     dispatch_register(Event_Signal, signal_handler, NULL);
  83
  84     /* set up signal handler */
  85     sigemptyset(&sigset);
  86     action.sa_handler = dispatch_signal;
  87     action.sa_mask = sigset;
  88     action.sa_flags = SA_NOCLDSTOP;
  89     sigaction(SIGUSR1, &action, (struct sigaction *) NULL);
  90     sigaction(SIGPIPE, &action, (struct sigaction *) NULL);
  91     sigaction(SIGSEGV, &action, (struct sigaction *) NULL);
  92     sigaction(SIGFPE, &action, (struct sigaction *) NULL);
  93     sigaction(SIGTERM, &action, (struct sigaction *) NULL);
  94     sigaction(SIGINT, &action, (struct sigaction *) NULL);
  95     sigaction(SIGHUP, &action, (struct sigaction *) NULL);
  96     sigaction(SIGCHLD, &action, (struct sigaction *) NULL);
  97
  98     /* anything that died while we were restarting won't give us a SIGCHLD */
  99     while (waitpid(-1, NULL, WNOHANG) > 0);
 100
 101     /* create the ~/.openbox dir */
 102     path = g_build_filename(g_get_home_dir(), ".openbox", NULL);
 103     mkdir(path, (S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IWGRP | S_IXGRP |
 104                  S_IROTH | S_IWOTH | S_IXOTH));
 105     g_free(path);
 106     /* create the ~/.openbox/themes dir */
 107     path = g_build_filename(g_get_home_dir(), ".openbox", "themes", NULL);
 108     mkdir(path, (S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IWGRP | S_IXGRP |
 109                  S_IROTH | S_IWOTH | S_IXOTH));
 110     g_free(path);
 111
 112     /* parse out command line args */
 113     parse_args(argc, argv);
 114
 115     ob_display = XOpenDisplay(NULL);
 116     if (ob_display == NULL) {
 117         /* print a message and exit */
 118         g_critical("Failed to open the display.");
 119         exit(1);
 120     }
 121     if (fcntl(ConnectionNumber(ob_display), F_SETFD, 1) == -1) {
 122         /* print a message and exit */
 123         g_critical("Failed to set display as close-on-exec.");
 124         exit(1);
 125     }
 126
 127     ob_screen = DefaultScreen(ob_display);
 128     ob_root = RootWindow(ob_display, ob_screen);
 129
 130     /* XXX fork self onto other screens */
 131
 132     XSynchronize(ob_display, ob_sync);
 133
 134     /* check for locale support */
 135     if (!XSupportsLocale())
 136         g_warning("X server does not support locale.");
 137     if (!XSetLocaleModifiers(""))
 138         g_warning("Cannot set locale modifiers for the X server.");
 139
 140     /* set our error handler */
 141     XSetErrorHandler(xerror_handler);
 142
 143     /* set the DISPLAY environment variable for any lauched children, to the
 144        display we're using, so they open in the right place. */
 145     putenv(g_strdup_printf("DISPLAY=%s", DisplayString(ob_display)));
 146
 147     ob_cursors.left_ptr = XCreateFontCursor(ob_display, XC_left_ptr);
 148     ob_cursors.ll_angle = XCreateFontCursor(ob_display, XC_ll_angle);
 149     ob_cursors.lr_angle = XCreateFontCursor(ob_display, XC_lr_angle);
 150
 151     prop_startup(); /* get atoms values for the display */
 152     extensions_query_all(); /* find which extensions are present */
 153
 154     if (screen_annex()) { /* it will be ours! */
 155         /* startup the parsing so everything can register sections of the rc */
 156         parse_startup();
 157
 158         /* anything that is going to read data from the rc file needs to be
 159            in this group */
 160         timer_startup();
 161         render_startup();
 162         font_startup();
 163         theme_startup();
 164         event_startup();
 165         grab_startup();
 166         plugin_startup();
 167         /* load the plugins specified in the pluginrc */
 168         plugin_loadall();
 169
 170         /* set up the kernel config shit */
 171         config_startup();
 172         /* parse/load user options */
 173         parse_rc();
 174         /* we're done with parsing now, kill it */
 175         parse_shutdown();
 176
 177         /* load the theme specified in the rc file */
 178         theme = theme_load(config_theme);
 179         g_free(theme);
 180         if (!theme) return 1;
 181
 182         menu_startup();
 183         frame_startup();
 184         stacking_startup();
 185         focus_startup();
 186         screen_startup();
 187         group_startup();
 188         client_startup();
 189
 190         /* call startup for all the plugins */
 191         plugin_startall();
 192
 193         /* get all the existing windows */
 194         client_manage_all();
 195
 196         ob_state = State_Running;
 197         while (!ob_shutdown)
 198             event_loop();
 199         ob_state = State_Exiting;
 200
 201         client_unmanage_all();
 202
 203         plugin_shutdown(); /* calls all the plugins' shutdown functions */
 204         client_shutdown();
 205         group_shutdown();
 206         screen_shutdown();
 207         focus_shutdown();
 208         stacking_shutdown();
 209         frame_shutdown();
 210         menu_shutdown();
 211         grab_shutdown();
 212         event_shutdown();
 213         theme_shutdown();
 214         render_shutdown();
 215         timer_shutdown();
 216         config_shutdown();
 217     }
 218
 219     dispatch_shutdown();
 220
 221     XCloseDisplay(ob_display);
 222
 223     if (ob_restart) {
 224         if (ob_restart_path != NULL) {
 225             int argcp;
 226             char **argvp;
 227             GError *err = NULL;
 228
 229             /* run other shit */
 230             if (g_shell_parse_argv(ob_restart_path, &argcp, &argvp, &err)) {
 231                 execvp(argvp[0], argvp);
 232                 g_strfreev(argvp);
 233             } else {
 234                 g_warning("failed to execute '%s': %s", ob_restart_path,
 235                           err->message);
 236             }
 237         }
 238
 239         /* re-run me */
 240         execvp(argv[0], argv); /* try how we were run */
 241         execlp(BINARY, BINARY, NULL); /* try this as a last resort */
 242     }
 243
 244     return 0;
 245 }
 246
 247 void signal_handler(const ObEvent *e, void *data)
 248 {
 249     int s;
 250
 251     s = e->data.s.signal;
 252     switch (s) {
 253     case SIGUSR1:
 254         g_message("Caught SIGUSR1 signal. Restarting.");
 255         ob_shutdown = ob_restart = TRUE;
 256         break;
 257
 258     case SIGCHLD:
 259         wait(NULL);
 260         break;
 261
 262     case SIGHUP:
 263     case SIGINT:
 264     case SIGTERM:
 265     case SIGPIPE:
 266         g_message("Caught signal %d. Exiting.", s);
 267         ob_shutdown = TRUE;
 268         break;
 269
 270     case SIGFPE:
 271     case SIGSEGV:
 272         g_error("Caught signal %d. Aborting and dumping core.", s);
 273     }
 274 }
 275
 276 void print_version()
 277 {
 278     g_print("Openbox %s\n\n", PACKAGE_VERSION);
 279     g_print("This program comes with ABSOLUTELY NO WARRANTY.\n");
 280     g_print("This is free software, and you are welcome to redistribute it\n");
 281     g_print("under certain conditions. See the file COPYING for details.\n\n");
 282 }
 283
 284 void print_help()
 285 {
 286     print_version();
 287     g_print("Syntax: %s [options]\n\n", BINARY);
 288     g_print("Options:\n\n");
 289     g_print("  -rc PATH     Specify the path to the rc file to use\n");
 290     g_print("  -help        Display this help and exit\n");
 291     g_print("  -version     Display the version and exit\n");
 292     g_print("  -sync        Run in synchronous mode (this is slow and meant\n"
 293             "               for debugging X routines)\n");
 294     g_print("\nPlease report bugs at %s\n", PACKAGE_BUGREPORT);
 295 }
 296
 297 void parse_args(int argc, char **argv)
 298 {
 299     int i;
 300
 301     for (i = 1; i < argc; ++i) {
 302         if (!strcmp(argv[i], "-version")) {
 303             print_version();
 304             exit(0);
 305         } else if (!strcmp(argv[i], "-help")) {
 306             print_help();
 307             exit(0);
 308         } else if (!strcmp(argv[i], "-sync")) {
 309             ob_sync = TRUE;
 310         } else if (!strcmp(argv[i], "-rc")) {
 311             if (i == argc - 1) /* no args left */
 312                 g_printerr("-rc requires an argument\n");
 313             else
 314                 ob_rc_path = argv[++i];
 315         } else {
 316             g_printerr("Invalid option: '%s'\n\n", argv[i]);
 317             print_help();
 318             exit(1);
 319         }
 320     }
 321 }