* implied warranty.
*/
-#define STANDALONE
-
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <X11/Intrinsic.h> /* only needed to get through xscreensaver.h */
+#include "remote.h"
#include "version.h"
-#ifdef STANDALONE
- static char *progname;
- static Atom XA_VROOT;
- static Atom XA_SCREENSAVER, XA_SCREENSAVER_RESPONSE, XA_SCREENSAVER_VERSION;
- static Atom XA_SCREENSAVER_TIME, XA_SELECT;
-#else /* !STANDALONE */
-# include "xscreensaver.h"
-#endif /* !STANDALONE */
-
-
#ifdef _VROOT_H_
ERROR! you must not include vroot.h in this file
#endif
+char *progname;
+Atom XA_VROOT;
+Atom XA_SCREENSAVER, XA_SCREENSAVER_VERSION, XA_SCREENSAVER_RESPONSE;
+Atom XA_SCREENSAVER_ID, XA_SCREENSAVER_TIME, XA_SELECT, XA_DEMO;
+static Atom XA_ACTIVATE, XA_DEACTIVATE, XA_CYCLE, XA_NEXT, XA_PREV, XA_EXIT;
+static Atom XA_RESTART, XA_PREFS, XA_LOCK;
-static Window
-find_screensaver_window (Display *dpy, char **version)
-{
- int i;
- Window root = RootWindowOfScreen (DefaultScreenOfDisplay (dpy));
- Window root2, parent, *kids;
- unsigned int nkids;
-
- if (version) *version = 0;
-
- if (! XQueryTree (dpy, root, &root2, &parent, &kids, &nkids))
- abort ();
- if (root != root2)
- abort ();
- if (parent)
- abort ();
- if (! (kids && nkids))
- abort ();
- for (i = 0; i < nkids; i++)
- {
- Atom type;
- int format;
- unsigned long nitems, bytesafter;
- char *v;
-
- if (XGetWindowProperty (dpy, kids[i],
- XA_SCREENSAVER_VERSION,
- 0, 200, False, XA_STRING,
- &type, &format, &nitems, &bytesafter,
- (unsigned char **) &v)
- == Success
- && type != None)
- {
- if (version)
- *version = v;
- return kids[i];
- }
- }
- fprintf (stderr, "%s: no screensaver is running on display %s\n", progname,
- DisplayString (dpy));
- return 0;
-}
-
-
-static int
-send_xscreensaver_command (Display *dpy, Atom command, long argument,
- Window *window_ret)
-{
- char *v = 0;
- Window window = find_screensaver_window (dpy, &v);
- XWindowAttributes xgwa;
-
- if (window_ret)
- *window_ret = window;
-
- if (!window)
- return -1;
-
- /* Select for property change events, so that we can read the response. */
- XGetWindowAttributes (dpy, window, &xgwa);
- XSelectInput (dpy, window, xgwa.your_event_mask | PropertyChangeMask);
-
- if (command == XA_SCREENSAVER_TIME ||
- command == XA_SCREENSAVER_VERSION)
- {
- XClassHint hint;
- memset (&hint, 0, sizeof(hint));
- if (!v || !*v)
- {
- fprintf (stderr, "%s: version property not set on window 0x%x?\n",
- progname, (unsigned int) window);
- return -1;
- }
-
- XGetClassHint(dpy, window, &hint);
- if (!hint.res_class)
- {
- fprintf (stderr, "%s: class hints not set on window 0x%x?\n",
- progname, (unsigned int) window);
- return -1;
- }
-
- fprintf (stdout, "%s %s", hint.res_class, v);
-
- if (command != XA_SCREENSAVER_TIME)
- {
- fprintf (stdout, "\n");
- }
- else
- {
- Atom type;
- int format;
- unsigned long nitems, bytesafter;
- unsigned char *data = 0;
- Bool active_p = False;
-
- if (XGetWindowProperty (dpy, window, XA_VROOT,
- 0, 0, False, XA_WINDOW,
- &type, &format, &nitems, &bytesafter,
- &data)
- == Success
- && type != None)
- active_p = True;
-
- if (data) free (data);
- data = 0;
-
- if (XGetWindowProperty (dpy, window,
- XA_SCREENSAVER_TIME,
- 0, 1, False, XA_INTEGER,
- &type, &format, &nitems, &bytesafter,
- &data)
- == Success
- && type == XA_INTEGER
- && data)
- {
- CARD32 time32 = *((CARD32 *)data);
- time_t tt = (time_t) time32;
-
- if (active_p)
- fprintf (stdout, ": screen blanked since ");
- else
- /* suggestions for a better way to phrase this are welcome. */
- fprintf (stdout, ": screen non-blanked since ");
- fprintf (stdout, "%s", ctime(&tt));
- if (data) free (data);
- }
- else
- {
- if (data) free (data);
- fprintf (stdout, "\n");
- fflush (stdout);
- fprintf (stderr, "%s: no time on window 0x%x (%s %s).\n",
- progname, (unsigned int) window,
- hint.res_class, (v ? v : "???"));
- return -1;
- }
- }
-
- /* No need to read a response for these commands. */
- return 1;
- }
- else
- {
- XEvent event;
- long arg1 = (command == XA_SELECT ? argument : 0L);
- event.xany.type = ClientMessage;
- event.xclient.display = dpy;
- event.xclient.window = window;
- event.xclient.message_type = XA_SCREENSAVER;
- event.xclient.format = 32;
- memset (&event.xclient.data, 0, sizeof(event.xclient.data));
- event.xclient.data.l[0] = (long) command;
- event.xclient.data.l[1] = arg1;
- if (! XSendEvent (dpy, window, False, 0L, &event))
- {
- fprintf (stderr, "%s: XSendEvent(dpy, 0x%x ...) failed.\n",
- progname, (unsigned int) window);
- return -1;
- }
- }
- XSync (dpy, 0);
- return 0;
-}
-
-
-static XErrorHandler old_handler = 0;
-static Bool got_badwindow = False;
-static int
-BadWindow_ehandler (Display *dpy, XErrorEvent *error)
-{
- /* When we notice a window being created, we spawn a timer that waits
- 30 seconds or so, and then selects events on that window. This error
- handler is used so that we can cope with the fact that the window
- may have been destroyed <30 seconds after it was created.
- */
- if (error->error_code == BadWindow)
- {
- got_badwindow = True;
- return 0;
- }
- else
- {
- fprintf (stderr, "%s: ", progname);
- return (*old_handler) (dpy, error);
- }
-}
-
-
-static int
-xscreensaver_command_response (Display *dpy, Window window)
-{
- int fd = ConnectionNumber (dpy);
- int timeout = 10;
- int status;
- fd_set fds;
- struct timeval tv;
-
- while (1)
- {
- FD_ZERO(&fds);
- FD_SET(fd, &fds);
- memset(&tv, 0, sizeof(tv));
- tv.tv_sec = timeout;
- status = select (fd+1, &fds, 0, &fds, &tv);
-
- if (status < 0)
- {
- char buf[1024];
- sprintf (buf, "%s: waiting for reply", progname);
- perror (buf);
- return status;
- }
- else if (status == 0)
- {
- fprintf (stderr, "%s: no response to command.\n", progname);
- return -1;
- }
- else
- {
- XEvent event;
- XNextEvent (dpy, &event);
- switch (event.xany.type) {
- case PropertyNotify:
- if (event.xproperty.state == PropertyNewValue &&
- event.xproperty.atom == XA_SCREENSAVER_RESPONSE)
- {
- Status st2;
- Atom type;
- int format;
- unsigned long nitems, bytesafter;
- char *msg = 0;
-
- old_handler = XSetErrorHandler (BadWindow_ehandler);
- XSync (dpy, False);
-
- st2 = XGetWindowProperty (dpy, window,
- XA_SCREENSAVER_RESPONSE,
- 0, 1024, True,
- AnyPropertyType,
- &type, &format, &nitems, &bytesafter,
- (unsigned char **) &msg);
-
- if (got_badwindow)
- {
- fprintf (stdout,
- "%s: xscreensaver window has been deleted.\n",
- progname);
- return 0;
- }
-
- if (st2 == Success && type != None)
- {
- if (type != XA_STRING || format != 8)
- {
- fprintf (stderr,
- "%s: unrecognized response property.\n",
- progname);
- if (msg) XFree (msg);
- return -1;
- }
- else if (!msg || (msg[0] != '+' && msg[0] != '-'))
- {
- fprintf (stderr,
- "%s: unrecognized response message.\n",
- progname);
- if (msg) XFree (msg);
- return -1;
- }
- else
- {
- int ret = (msg[0] == '+' ? 0 : -1);
- fprintf ((ret < 0 ? stderr : stdout),
- "%s: %s\n",
- progname,
- msg+1);
- XFree (msg);
- return ret;
- }
- }
- }
- break;
-
- default:
- fprintf (stderr, "%s: got unexpected response event %d.\n",
- progname, event.xany.type);
- return -1;
- break;
- }
- }
- }
-}
-
-
-int
-xscreensaver_command (Display *dpy, Atom command, long argument)
-{
- Window w = 0;
- int status = send_xscreensaver_command (dpy, command, argument, &w);
- if (status == 0)
- status = xscreensaver_command_response (dpy, w);
- fflush (stdout);
- fflush (stderr);
- return status;
-}
-
-\f
-#ifdef STANDALONE
-static Atom XA_ACTIVATE, XA_DEACTIVATE, XA_CYCLE, XA_NEXT, XA_PREV;
-static Atom XA_EXIT, XA_RESTART, XA_DEMO, XA_PREFS, XA_LOCK;
-
-static char *progname;
static char *screensaver_version;
static char *usage = "\n\
usage: %s -<option>\n\
For updates, check http://www.jwz.org/xscreensaver/\n\
\n";
-#define USAGE() \
- { fprintf (stderr, usage, progname, screensaver_version); exit (1); }
+#define USAGE() do { \
+ fprintf (stderr, usage, progname, screensaver_version); exit (1); \
+ } while(0)
int
main (int argc, char **argv)
L = strlen (s);
if (L < 2) USAGE ();
if (!strncmp (s, "-display", L)) dpyname = argv [++i];
- else if (cmd) USAGE ()
+ else if (cmd) USAGE();
else if (!strncmp (s, "-activate", L)) cmd = &XA_ACTIVATE;
else if (!strncmp (s, "-deactivate", L)) cmd = &XA_DEACTIVATE;
else if (!strncmp (s, "-cycle", L)) cmd = &XA_CYCLE;
else if (!strncmp (s, "-time", L)) cmd = &XA_SCREENSAVER_TIME;
else USAGE ();
- if (cmd == &XA_SELECT)
+ if (cmd == &XA_SELECT || cmd == &XA_DEMO)
{
- char junk;
- i++;
- if (i >= argc ||
- (1 != sscanf(argv[i], " %ld %c", &arg, &junk)))
- USAGE ();
+ long a;
+ char c;
+ if (i+1 < argc && (1 == sscanf(argv[i+1], " %ld %c", &a, &c)))
+ {
+ arg = a;
+ i++;
+ }
}
}
+
if (!cmd)
USAGE ();
+ if (arg < 0)
+ /* no command may have a negative argument. */
+ USAGE();
+ else if (arg == 0)
+ {
+ /* SELECT must have a non-zero argument. */
+ if (cmd == &XA_SELECT)
+ USAGE();
+ }
+ else /* arg > 0 */
+ {
+ /* no command other than SELECT and DEMO may have a non-zero argument. */
+ if (cmd != &XA_DEMO && cmd != &XA_SELECT)
+ USAGE();
+ }
+
+
+
+ /* For backward compatibility: -demo with no arguments used to send a
+ "DEMO 0" ClientMessage to the xscreensaver process, which brought up
+ the built-in demo mode dialog. Now that the demo mode dialog is no
+ longer built in, we bring it up by just running the "xscreensaver-demo"
+ program.
+
+ Note that "-DEMO <n>" still sends a ClientMessage.
+ */
+ if (cmd == &XA_PREFS ||
+ (cmd == &XA_DEMO && arg == 0))
+ {
+ char buf [512];
+ char *new_argv[] = { "xscreensaver-demo", 0, 0, 0, 0, 0 };
+ int ac = 1;
+
+ if (dpyname)
+ {
+ new_argv[ac++] = "-display";
+ new_argv[ac++] = dpyname;
+ }
+
+ if (cmd == &XA_PREFS)
+ new_argv[ac++] = "-prefs";
+
+ fflush(stdout);
+ fflush(stderr);
+ execvp (new_argv[0], new_argv); /* shouldn't return */
+
+ sprintf (buf, "%s: could not exec %s", progname, new_argv[0]);
+ perror(buf);
+ fflush(stdout);
+ fflush(stderr);
+ exit (-1);
+ }
+
+
+
if (!dpyname) dpyname = (char *) getenv ("DISPLAY");
dpy = XOpenDisplay (dpyname);
if (!dpy)
XA_VROOT = XInternAtom (dpy, "__SWM_VROOT", False);
XA_SCREENSAVER = XInternAtom (dpy, "SCREENSAVER", False);
+ XA_SCREENSAVER_ID = XInternAtom (dpy, "_SCREENSAVER_ID", False);
XA_SCREENSAVER_VERSION = XInternAtom (dpy, "_SCREENSAVER_VERSION",False);
XA_SCREENSAVER_TIME = XInternAtom (dpy, "_SCREENSAVER_TIME", False);
XA_SCREENSAVER_RESPONSE = XInternAtom (dpy, "_SCREENSAVER_RESPONSE", False);
so if we're issuing an activation command, wait a second. */
sleep (1);
- i = xscreensaver_command (dpy, *cmd, arg);
+ i = xscreensaver_command (dpy, *cmd, arg, True);
if (i < 0) exit (i);
else exit (0);
}
-
-#endif /* STANDALONE */
projects / xscreensaver / blobdiff