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