-/* xscreensaver-command, Copyright (c) 1991-1998
- * by Jamie Zawinski <jwz@jwz.org>
+/* xscreensaver-command, Copyright (c) 1991-2009 Jamie Zawinski <jwz@jwz.org>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
#include <stdio.h>
#include <stdlib.h>
+#include <time.h>
#include <sys/time.h>
#include <sys/types.h>
Atom type;
int format;
unsigned long nitems, bytesafter;
- char *v;
+ unsigned char *v;
int status;
/* We're walking the list of root-level windows and trying to find
XA_SCREENSAVER_VERSION,
0, 200, False, XA_STRING,
&type, &format, &nitems, &bytesafter,
- (unsigned char **) &v);
+ &v);
XSync (dpy, False);
XSetErrorHandler (old_handler);
old_handler = 0;
if (status == Success && type != None)
{
+ Window ret = kids[i];
if (version)
- *version = v;
- return kids[i];
+ *version = (char *) v;
+ XFree (kids);
+ return ret;
}
}
+
+ if (kids) XFree (kids);
return 0;
}
send_xscreensaver_command (Display *dpy, Atom command, long arg,
Window *window_ret, char **error_ret)
{
+ int status = -1;
char *v = 0;
Window window = find_screensaver_window (dpy, &v);
XWindowAttributes xgwa;
if (error_ret)
{
*error_ret = strdup (err);
- return -1;
+ status = -1;
+ goto DONE;
}
if (command == XA_EXIT)
- /* Don't print an error if xscreensaver is already dead. */
- return 1;
+ {
+ /* Don't print an error if xscreensaver is already dead. */
+ status = 1;
+ goto DONE;
+ }
fprintf (stderr, "%s: %s\n", progname, err);
- return -1;
+ status = -1;
+ goto DONE;
}
/* Select for property change events, so that we can read the response. */
*error_ret = strdup (err);
else
fprintf (stderr, "%s: %s\n", progname, err);
- return -1;
+
+ status = -1;
+ goto DONE;
}
XGetClassHint(dpy, window, &hint);
*error_ret = strdup (err);
else
fprintf (stderr, "%s: %s\n", progname, err);
- return -1;
+
+ status = -1;
+ goto DONE;
}
fprintf (stdout, "%s %s", hint.res_class, v);
Atom type;
int format;
unsigned long nitems, bytesafter;
- CARD32 *data = 0;
+ unsigned char *dataP = 0;
if (XGetWindowProperty (dpy,
RootWindow (dpy, 0),
XA_SCREENSAVER_STATUS,
0, 999, False, XA_INTEGER,
&type, &format, &nitems, &bytesafter,
- (unsigned char **) &data)
+ &dataP)
== Success
&& type
- && data)
+ && dataP)
{
Atom blanked;
time_t tt;
char *s;
+ Atom *data = (Atom *) dataP;
if (type != XA_INTEGER || nitems < 3)
{
fprintf (stdout, "\n");
fflush (stdout);
fprintf (stderr, "bad status format on root window.\n");
- return -1;
+ status = -1;
+ goto DONE;
}
blanked = (Atom) data[0];
}
if (any && nhacks == 1)
- fprintf (stdout, " (hack #%d)\n", data[2]);
+ fprintf (stdout, " (hack #%d)\n", (int) data[2]);
else if (any)
{
fprintf (stdout, " (hacks: ");
for (i = 0; i < nhacks; i++)
{
- fprintf (stdout, "#%d", data[2 + i]);
+ fprintf (stdout, "#%d", (int) data[2 + i]);
if (i != nhacks-1)
fputs (", ", stdout);
}
}
else
{
- if (data) free (data);
+ if (dataP) XFree (dataP);
fprintf (stdout, "\n");
fflush (stdout);
fprintf (stderr, "no saver status on root window.\n");
- return -1;
+ status = -1;
+ goto DONE;
}
}
/* No need to read a response for these commands. */
- return 1;
+ status = 1;
+ goto DONE;
}
else
{
abort();
else if (arg != 0 && command == XA_DEMO)
{
- arg1 = 300; /* version number of the XA_DEMO protocol, */
+ arg1 = 5000; /* version number of the XA_DEMO protocol, */
arg2 = arg; /* since it didn't use to take an argument. */
}
*error_ret = strdup (err);
else
fprintf (stderr, "%s: %s\n", progname, err);
- return -1;
+ status = -1;
+ goto DONE;
}
}
+
+ status = 0;
+
+ DONE:
+ if (v) free (v);
XSync (dpy, 0);
- return 0;
+ return status;
+}
+
+
+static Bool
+xscreensaver_command_event_p (Display *dpy, XEvent *event, XPointer arg)
+{
+ return (event->xany.type == PropertyNotify &&
+ event->xproperty.state == PropertyNewValue &&
+ event->xproperty.atom == XA_SCREENSAVER_RESPONSE);
}
Bool verbose_p, Bool exiting_p,
char **error_ret)
{
- int fd = ConnectionNumber (dpy);
- int timeout = 10;
- int status;
- fd_set fds;
- struct timeval tv;
+ int sleep_count = 0;
char err[2048];
+ XEvent event;
+ Bool got_event = False;
- while (1)
+ while (!(got_event = XCheckIfEvent(dpy, &event,
+ &xscreensaver_command_event_p, 0)) &&
+ sleep_count++ < 10)
{
- 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 defined(HAVE_SELECT)
+ /* Wait for an event, but don't wait longer than 1 sec. Note that we
+ might do this multiple times if an event comes in, but it wasn't
+ the event we're waiting for.
+ */
+ int fd = XConnectionNumber(dpy);
+ fd_set rset;
+ struct timeval tv;
+ tv.tv_sec = 1;
+ tv.tv_usec = 0;
+ FD_ZERO (&rset);
+ FD_SET (fd, &rset);
+ select (fd+1, &rset, 0, 0, &tv);
+# else /* !HAVE_SELECT */
+ sleep(1);
+# endif /* !HAVE_SELECT */
+ }
- if (status < 0)
- {
- char buf[1024];
- if (error_ret)
- {
- sprintf (buf, "error waiting for reply");
- *error_ret = strdup (buf);
- }
- else
- {
- sprintf (buf, "%s: error waiting for reply", progname);
- perror (buf);
- }
- return status;
- }
- else if (status == 0)
+ if (!got_event)
+ {
+ sprintf (err, "no response to command.");
+ if (error_ret)
+ *error_ret = strdup (err);
+ else
+ fprintf (stderr, "%s: %s\n", progname, err);
+
+ return -1;
+ }
+ else
+ {
+ Status st2;
+ Atom type;
+ int format;
+ unsigned long nitems, bytesafter;
+ unsigned char *msg = 0;
+
+ XSync (dpy, False);
+ if (old_handler) abort();
+ old_handler = XSetErrorHandler (BadWindow_ehandler);
+ st2 = XGetWindowProperty (dpy, window,
+ XA_SCREENSAVER_RESPONSE,
+ 0, 1024, True,
+ AnyPropertyType,
+ &type, &format, &nitems, &bytesafter,
+ &msg);
+ XSync (dpy, False);
+ XSetErrorHandler (old_handler);
+ old_handler = 0;
+
+ if (got_badwindow)
{
- sprintf (err, "no response to command.");
- if (error_ret)
- *error_ret = strdup (err);
- else
- fprintf (stderr, "%s: %s\n", progname, err);
+ if (exiting_p)
+ return 0;
+
+ sprintf (err, "xscreensaver window unexpectedly deleted.");
+
+ if (error_ret)
+ *error_ret = strdup (err);
+ else
+ fprintf (stderr, "%s: %s\n", progname, err);
+
return -1;
}
- else
+
+ if (st2 == Success && type != None)
{
- XEvent event;
- XNextEvent (dpy, &event);
- if (event.xany.type == PropertyNotify &&
- event.xproperty.state == PropertyNewValue &&
- event.xproperty.atom == XA_SCREENSAVER_RESPONSE)
+ if (type != XA_STRING || format != 8)
{
- Status st2;
- Atom type;
- int format;
- unsigned long nitems, bytesafter;
- char *msg = 0;
-
- XSync (dpy, False);
- if (old_handler) abort();
- old_handler = XSetErrorHandler (BadWindow_ehandler);
- st2 = XGetWindowProperty (dpy, window,
- XA_SCREENSAVER_RESPONSE,
- 0, 1024, True,
- AnyPropertyType,
- &type, &format, &nitems, &bytesafter,
- (unsigned char **) &msg);
- XSync (dpy, False);
- XSetErrorHandler (old_handler);
- old_handler = 0;
-
- if (got_badwindow)
- {
- if (exiting_p)
- return 0;
+ sprintf (err, "unrecognized response property.");
- sprintf (err, "xscreensaver window unexpectedly deleted.");
+ if (error_ret)
+ *error_ret = strdup (err);
+ else
+ fprintf (stderr, "%s: %s\n", progname, err);
- if (error_ret)
- *error_ret = strdup (err);
- else
- fprintf (stderr, "%s: %s\n", progname, err);
+ if (msg) XFree (msg);
+ return -1;
+ }
+ else if (!msg || (msg[0] != '+' && msg[0] != '-'))
+ {
+ sprintf (err, "unrecognized response message.");
- return -1;
- }
+ if (error_ret)
+ *error_ret = strdup (err);
+ else
+ fprintf (stderr, "%s: %s\n", progname, err);
- if (st2 == Success && type != None)
- {
- if (type != XA_STRING || format != 8)
- {
- sprintf (err, "unrecognized response property.");
-
- if (error_ret)
- *error_ret = strdup (err);
- else
- fprintf (stderr, "%s: %s\n", progname, err);
-
- if (msg) XFree (msg);
- return -1;
- }
- else if (!msg || (msg[0] != '+' && msg[0] != '-'))
- {
- sprintf (err, "unrecognized response message.");
-
- if (error_ret)
- *error_ret = strdup (err);
- else
- fprintf (stderr, "%s: %s\n", progname, err);
-
- if (msg) XFree (msg);
- return -1;
- }
- else
- {
- int ret = (msg[0] == '+' ? 0 : -1);
- sprintf (err, "%s: %s\n", progname, msg+1);
-
- if (error_ret)
- *error_ret = strdup (err);
- else if (verbose_p || ret != 0)
- fprintf ((ret < 0 ? stderr : stdout), "%s\n", err);
-
- XFree (msg);
- return ret;
- }
- }
+ if (msg) XFree (msg);
+ return -1;
+ }
+ else
+ {
+ int ret = (msg[0] == '+' ? 0 : -1);
+ sprintf (err, "%s: %s\n", progname, (char *) msg+1);
+
+ if (error_ret)
+ *error_ret = strdup (err);
+ else if (verbose_p || ret != 0)
+ fprintf ((ret < 0 ? stderr : stdout), "%s\n", err);
+
+ XFree (msg);
+ return ret;
}
}
}
+
+ return -1; /* warning suppression: not actually reached */
}
if (version_ret)
{
- char *v = 0;
+ unsigned char *v = 0;
XGetWindowProperty (dpy, window, XA_SCREENSAVER_VERSION, 0, 1,
False, XA_STRING, &type, &format, &nitems,
- &bytesafter, (unsigned char **) &v);
+ &bytesafter, &v);
if (v)
{
- *version_ret = strdup (v);
+ *version_ret = strdup ((char *) v);
XFree (v);
}
}
if (user_ret || host_ret)
{
- char *id = 0;
+ unsigned char *id = 0;
const char *user = 0;
const char *host = 0;
XGetWindowProperty (dpy, window, XA_SCREENSAVER_ID, 0, 512,
False, XA_STRING, &type, &format, &nitems,
- &bytesafter, (unsigned char **) &id);
+ &bytesafter, &id);
if (id && *id)
{
const char *old_tag = " on host ";
- const char *s = strstr (id, old_tag);
+ const char *s = strstr ((char *) id, old_tag);
if (s)
{
/* found ID of the form "1234 on host xyz". */
else
{
char *o = 0, *p = 0, *c = 0;
- o = strchr (id, '(');
+ o = strchr ((char *) id, '(');
if (o) p = strchr (o, '@');
if (p) c = strchr (p, ')');
if (c)
projects / xscreensaver / blobdiff