Initial revision

git-svn-id: svn+ssh://svn.mandriva.com/svn/soft/s2u/trunk@179769 99302b65-d5f7-0310-b3dd-f8cd6f4e3d94

9 files changed, 888 insertions, 0 deletions

diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..fa1d7e7
--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1,2 @@
+Stew Benedict, <sbenedict@mandrakesoft.com>
+Frédéric Lepied, <flepied@mandrakesoft.com>
diff --git a/ChangeLog b/ChangeLog
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/ChangeLog
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..a43ea21
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,339 @@
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+                          675 Mass Ave, Cambridge, MA 02139, USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+		    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+			    NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+		     END OF TERMS AND CONDITIONS
+
+	Appendix: How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) 19yy  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) 19yy name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Library General
+Public License instead of this License.
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..aed4efc
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,82 @@
+#############################################################################
+# File		: Makefile
+# Package	: s2u
+# Author	: Frederic Lepied
+# Created on	: Mon Sep 30 13:20:18 1999
+# Version	: $Id$
+# Purpose	: rules to manage the files.
+#############################################################################
+
+PACKAGE=s2u
+VERSION:=$(shell rpm -q --qf %{VERSION} --specfile $(PACKAGE).spec)
+RELEASE:=$(shell rpm -q --qf %{RELEASE} --specfile $(PACKAGE).spec)
+TAG := $(shell echo "V$(VERSION)_$(RELEASE)" | tr -- '-.' '__')
+
+FILES = Makefile README hostname-post s2u.c s2u.sh s2u.spec \
+ LICENSE README ChangeLog
+
+DEFS = -DDBUS_API_SUBJECT_TO_CHANGE=1
+CC = gcc
+CFLAGS = -Os -pipe -Wall -fomit-frame-pointer -fno-strict-aliasing
+INCLUDES = -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include
+LDFLAGS = -ldbus-glib-1 -lglib-2.0 -ldbus-1
+
+COMPILE = $(CC) $(DEFS) $(CFLAGS)
+
+s2u:	s2u.o
+	$(CC) $(LDFLAGS) -o $@ $^
+
+.c.o:
+	$(COMPILE) $(INCLUDES) -c $<
+
+clean:			
+	rm -f *.o s2u *~
+
+install:
+	install -d $(DESTDIR)/etc/X11/xinit.d
+	install s2u.sh $(DESTDIR)/etc/X11/xinit.d
+	install -d $(DESTDIR)/usr/bin
+	install s2u $(DESTDIR)/usr/bin
+	install -d $(DESTDIR)/etc/sysconfig/network-script/hostname.d
+	install hostname-post $(DESTDIR)/etc/sysconfig/network-script/hostname.d/s2u
+# rules to build a test rpm
+
+localrpm: localdist buildrpm
+
+localdist: cleandist dir localcopy tar
+
+cleandist:
+	rm -rf $(PACKAGE)-$(VERSION) $(PACKAGE)-$(VERSION).tar.bz2
+
+dir:
+	mkdir $(PACKAGE)-$(VERSION)
+
+localcopy:
+	tar c $(FILES) | tar x -C $(PACKAGE)-$(VERSION)
+
+tar:
+	tar cvf $(PACKAGE)-$(VERSION).tar $(PACKAGE)-$(VERSION)
+	bzip2 -9vf $(PACKAGE)-$(VERSION).tar
+	rm -rf $(PACKAGE)-$(VERSION)
+
+buildrpm:
+	rpm -ta $(PACKAGE)-$(VERSION).tar.bz2
+
+# rules to build a distributable rpm
+
+rpm: changelog cvstag dist buildrpm
+
+dist: cleandist dir export tar
+
+export:
+	cvs export -d $(PACKAGE)-$(VERSION) -r $(TAG) $(PACKAGE)
+
+cvstag:
+	cvs tag $(CVSTAGOPT) $(TAG)
+
+changelog: ../common/username
+	cvs2cl -U ../common/username -I ChangeLog 
+	rm -f ChangeLog.bak
+	cvs commit -m "Generated by cvs2cl the `date '+%d_%b'`" ChangeLog
+
+# Makefile ends here
diff --git a/README b/README
new file mode 100644
index 0000000..bcfe7cf
--- /dev/null
+++ b/README
@@ -0,0 +1,10 @@
+This tool is used to send messages between the system and users'
+accounts.
+
+For each X11 session a small program called s2u is launched under an
+X11 dbus session (using existing one if possible). The s2u program
+waits then for dbus messages to take the appropriate actions. The
+implemented actions are:
+
+ o react to hostname changes to continue to have a working X11 session.
+ 
\ No newline at end of file
diff --git a/hostname-post b/hostname-post
new file mode 100755
index 0000000..b8a3a86
--- /dev/null
+++ b/hostname-post
@@ -0,0 +1,18 @@
+#!/bin/sh
+#---------------------------------------------------------------
+# Project         : Mandrakelinux
+# Module          : s2u
+# File            : hostname-post
+# Version         : $Id$
+# Author          : Frederic Lepied
+# Created On      : Tue Jul  6 16:10:03 2004
+# Purpose         : send a dbus message on hostname change to all
+#                 running X11 dbus session.
+#---------------------------------------------------------------
+
+for f in `ls /var/tmp/dbus-xsession* 2> /dev/null`; do
+    . $f
+    dbus-send --type=method_call --dest=com.mandrakesoft.user.message /com/mandrakesoft/user com.mandrakesoft.user.message string:"Hostname: $1" &
+done
+
+# hostname-post ends here
diff --git a/s2u.c b/s2u.c
new file mode 100644
index 0000000..cdf0d53
--- /dev/null
+++ b/s2u.c
@@ -0,0 +1,363 @@
+/***************************************************************************
+ *
+ * s2u.c : Mandrakesoft messaging service
+ *
+ * Copyright (C) 2004 Mandrakesoft
+ * Stew Benedict, <sbenedict@mandrakesoft.com>
+ * Frederic Lepied, <flepied@mandrakesoft.com>
+ *
+ * code borrowed/adapted from the hal project - 
+ * 					http://www.freedesktop.org/Software/hal
+ *
+ * Licensed under the GNU General Public License version 2.0
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ **************************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <pwd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <signal.h>
+
+#include <dbus/dbus.h>
+#include <dbus/dbus-glib.h>
+
+static DBusConnection *dbus_connection;
+static gchar *cookie = NULL;
+
+/** Print out program usage.
+ *
+ */
+static void
+usage ()
+{
+	fprintf (stderr, "\n" "usage : drakservice [--daemon=yes|no] [--help]\n");
+	fprintf (stderr,
+		 "\n"
+		 "        --daemon=yes|no    Become a daemon\n"
+		 "        --help             Show this information and exit\n"
+		 "\n"
+		 "drakservice monitors messages through D-BUS,\n"
+		 "passing them on to the user.\n");
+}
+
+
+/** If #TRUE, we will daemonize */
+static dbus_bool_t opt_become_daemon = FALSE;
+
+/** Run as specified username if not #NULL */
+static char *opt_run_as = NULL;
+
+static void
+die (const char *message)
+{
+  fprintf (stderr, "*** %s", message);
+  exit (1);
+}
+
+static int
+drak_echo_message (DBusConnection * connection,
+	      DBusMessage * message)
+{
+  DBusError error;
+  DBusMessage *reply;
+  char *s;
+
+  dbus_error_init (&error);
+  
+  if (!dbus_message_get_args (message,
+                              &error,
+                              DBUS_TYPE_STRING, &s,
+                              DBUS_TYPE_INVALID))
+    {
+      reply = dbus_message_new_error (message,
+                                      error.name,
+                                      error.message);
+
+      if (reply == NULL)
+        die ("No memory\n");
+
+      if (!dbus_connection_send (connection, reply, NULL))
+        die ("No memory\n");
+
+      dbus_message_unref (reply);
+
+      return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+    }
+
+  reply = dbus_message_new_method_return (message);
+  if (reply == NULL)
+    die ("No memory\n");
+  
+  if (!dbus_message_append_args (reply,
+                                 DBUS_TYPE_STRING, s,
+                                 DBUS_TYPE_INVALID))
+    die ("No memory");
+  
+  if (!dbus_connection_send (connection, reply, NULL))
+    die ("No memory\n");
+
+  fprintf (stderr, "Mandrakesoft_user_message: %s\n", s);
+  
+  dbus_free (s);
+  
+  dbus_message_unref (reply);
+    
+  return DBUS_HANDLER_RESULT_HANDLED;
+}
+
+/** Message handler for method invocations. All invocations on any object
+ *  or interface is routed through this function.
+ *
+ *  @param  connection          D-BUS connection
+ *  @param  message             Message
+ *  @param  user_data           User data
+ *  @return                     What to do with the message
+ */
+static DBusHandlerResult
+filter_function (DBusConnection * connection,
+		 DBusMessage * message, void *user_data)
+{
+/*
+    INFO (("obj_path=%s interface=%s method=%s", 
+    dbus_message_get_path(message), 
+    dbus_message_get_interface(message),
+    dbus_message_get_member(message)));
+*/
+
+	/* message, interface, method */ 
+	if (dbus_message_is_method_call (message,
+					 "com.mandrakesoft.user",
+					 "message") &&
+	    strcmp (dbus_message_get_path (message),
+		    "/com/mandrakesoft/user") == 0) {
+	  gchar* args[] = 
+	    {
+	      "/usr/X11R6/bin/xauth",
+	      "add",
+	      NULL,
+	      ".",
+	      NULL,
+	      NULL
+	    };
+
+	  args[2] = getenv("DISPLAY");
+	  args[4] = cookie;
+
+	  printf("setting cookie to %s\n", cookie);
+	  
+	  g_spawn_async("/", args, NULL, 0, NULL, NULL, NULL, NULL);
+
+	  return drak_echo_message (connection, message);
+	} else
+		return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+}
+
+
+DBusConnection *
+service_dbus_init (void)
+{
+	DBusError dbus_error;
+
+	dbus_connection_set_change_sigpipe (TRUE);
+
+	dbus_error_init (&dbus_error);
+	dbus_connection = dbus_bus_get (DBUS_BUS_SESSION, &dbus_error);
+	if (dbus_connection == NULL) {
+		printf("dbus_bus_get(): %s", dbus_error.message);
+		exit (1);
+	}
+
+	dbus_connection_setup_with_g_main (dbus_connection, NULL);
+
+	/* service, object, interface, member */
+	dbus_message_new_method_call ("com.mandrakesoft.user.message", "/com/mandrakesoft/user",
+                                                "com.mandrakesoft.user",
+                                                "message");
+ 
+	dbus_bus_acquire_service (dbus_connection, "com.mandrakesoft.user.message",
+				  0, &dbus_error);
+	if (dbus_error_is_set (&dbus_error)) {
+		printf("dbus_bus_acquire_service(): %s",
+		       dbus_error.message);
+		exit (1);
+	}
+
+	dbus_connection_add_filter (dbus_connection, filter_function, NULL,
+				    NULL);
+
+	return dbus_connection;
+}
+
+int
+main (int argc, char *argv[])
+{
+	DBusConnection *dbus_connection;
+	GMainLoop *loop;
+	gchar* args[] = 
+	  {
+	    "/usr/X11R6/bin/xauth",
+	    "list",
+	    NULL,
+	    NULL
+	  };
+	gint in;
+	gchar result[255];
+	gchar* idx;
+
+	memset(result, 0, sizeof(result));
+	
+	args[2] = getenv("DISPLAY");
+	
+	g_spawn_async_with_pipes("/", args, NULL, 0, NULL, NULL, NULL,
+				 NULL, &in, NULL, NULL);
+	if (read(in, result, sizeof(result)) <= 0) {
+	  die("unable to read X11 cookie");
+	} else {
+	  close(in);
+	  
+	  idx = rindex(result, ' ');
+	  cookie = g_strdup(idx+1);
+	  cookie[strlen(cookie) - 1] = '\0';
+	}
+	
+	while (1) {
+		int c;
+		int option_index = 0;
+		const char *opt;
+		static struct option long_options[] = {
+			{"daemon", 1, NULL, 0},
+			{"help", 0, NULL, 0},
+			{NULL, 0, NULL, 0}
+		};
+
+		c = getopt_long (argc, argv, "",
+				 long_options, &option_index);
+		if (c == -1)
+			break;
+
+		switch (c) {
+		case 0:
+			opt = long_options[option_index].name;
+
+			if (strcmp (opt, "help") == 0) {
+				usage ();
+				return 0;
+			} else if (strcmp (opt, "daemon") == 0) {
+				if (strcmp ("yes", optarg) == 0) {
+					opt_become_daemon = TRUE;
+				} else if (strcmp ("no", optarg) == 0) {
+					opt_become_daemon = FALSE;
+				} else {
+					usage ();
+					return 1;
+				}
+			}
+			break;
+
+		default:
+			usage ();
+			return 1;
+			break;
+		}
+	}
+
+	if (opt_become_daemon) {
+		int child_pid;
+		int dev_null_fd;
+
+		if (chdir ("/") < 0) {
+			printf("Could not chdir to /, errno=%d", errno);
+			return 1;
+		}
+
+		child_pid = fork ();
+		switch (child_pid) {
+		case -1:
+			printf("Cannot fork(), errno=%d", errno);
+			break;
+
+		case 0:
+			/* child */
+
+			dev_null_fd = open ("/dev/null", O_RDWR);
+			/* ignore if we can't open /dev/null */
+			if (dev_null_fd > 0) {
+				/* attach /dev/null to stdout, stdin, stderr */
+				dup2 (dev_null_fd, 0);
+				dup2 (dev_null_fd, 1);
+				dup2 (dev_null_fd, 2);
+			}
+
+			umask (022);
+			break;
+
+		default:
+			/* parent */
+			exit (0);
+			break;
+		}
+
+		/* Create session */
+		setsid ();
+	}
+
+	if (opt_run_as != NULL) {
+		uid_t uid;
+		gid_t gid;
+		struct passwd *pw;
+
+
+		if ((pw = getpwnam (opt_run_as)) == NULL) {
+			printf("Could not lookup user %s, errno=%d",
+				    opt_run_as, errno);
+			exit (1);
+		}
+
+		uid = pw->pw_uid;
+		gid = pw->pw_gid;
+
+		if (setgid (gid) < 0) {
+			printf("Failed to set GID to %d, errno=%d", gid, errno);
+			exit (1);
+		}
+
+		if (setuid (uid) < 0) {
+			printf("Failed to set UID to %d, errno=%d", uid, errno);
+			exit (1);
+		}
+
+	}
+
+	g_type_init ();
+
+	/* set up the dbus services */
+	dbus_connection = service_dbus_init ();
+
+	loop = g_main_loop_new (NULL, FALSE);
+
+	/* run the main loop and serve clients */
+	g_main_loop_run (loop);
+
+	return 0;
+}
diff --git a/s2u.sh b/s2u.sh
new file mode 100755
index 0000000..098aa2e
--- /dev/null
+++ b/s2u.sh
@@ -0,0 +1,34 @@
+#!/bin/sh
+#---------------------------------------------------------------
+# Project         : Mandrakelinux
+# Module          : alert_applet-0.13
+# File            : s2u.sh
+# Version         : $Id$
+# Author          : Frederic Lepied
+# Created On      : Sat Jul 31 01:03:37 2004
+# Purpose         : 
+#---------------------------------------------------------------
+
+vars() {
+    CURR_DISPLAY=`LC_ALL=C xdpyinfo | grep 'display' | awk '{print $4}'`
+
+    if [ -f "/var/tmp/dbus-xsession$CURR_DISPLAY" -a -O "/var/tmp/dbus-xsession$CURR_DISPLAY" ]; then
+	. "/var/tmp/dbus-xsession$CURR_DISPLAY"
+    fi
+}
+
+vars
+
+if [ -z "$DBUS_SESSION_BUS_PID" -o ! -d "/proc/$DBUS_SESSION_BUS_PID" ]; then
+    F=`mktemp /var/tmp/dbus.XXXXXX`
+    chmod 600 $F
+    dbus-launch --sh-syntax --exit-with-session > $F
+    rm -f "/var/tmp/dbus-xsession$CURR_DISPLAY"
+    mv -f $F "/var/tmp/dbus-xsession$CURR_DISPLAY"
+    vars
+fi
+
+s2u --daemon=yes
+
+
+# s2u.sh ends here
diff --git a/s2u.spec b/s2u.spec
new file mode 100644
index 0000000..54cfb49
--- /dev/null
+++ b/s2u.spec
@@ -0,0 +1,40 @@
+Summary: System to user tools
+Name: s2u
+Version: 0.1
+Release: 1mdk
+URL: http://www.mandrakelinux.com/
+Source0: %{name}-%{version}.tar.bz2
+License: GPL
+Group: Graphical desktop/Other
+BuildRoot: %{_tmppath}/%{name}-buildroot
+Prefix: %{_prefix}
+Requires: dbus-x11
+
+%description
+Use dbus to communicate between from the system to the users.
+
+%prep
+%setup -q
+
+%build
+%make
+
+%install
+rm -rf $RPM_BUILD_ROOT
+%makeinstall_std
+
+%clean
+rm -rf $RPM_BUILD_ROOT
+
+%files
+%defattr(-,root,root)
+%doc ChangeLog README AUTHORS License
+%_bindir/s2u
+/etc/X11/xinit.d/s2u.sh
+/etc/sysconfig/network-script/hostname.d/s2u
+
+%changelog
+* Sat Jul 31 2004 Frederic Lepied <flepied@mandrakesoft.com> 0.1-1mdk
+- monitor hostname change
+
+# end of file