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