* python/dbus_bindings.pyx:
- Fixed type objects to have self passed into __init__
- Added the Variant type
- Add the ability to specify types or signatures for Array, Variant and Dictionary
- (Connection::send_with_reply_handlers): return a PendingCall object
- (_pending_call_notification): handle the case when an error is returned
without an error message in the body
- (MessageIter::get_boolean): return True or False instead of an integer
- (MessageIter::python_value_to_dbus_sig): add direct checking of types and
add checks for objects with embeded signatures or types (Array, Variant and
Dictionary)
- (MessageIter::append_byte): handle case when the value is a dbus.Byte
- (MessageIter::append_dict): handle embeded types or signatures
- (MessageIter::append_array): handle embeded types or signatures
- (MessageIter::append_variant): new method
* python/proxies.py:
- (DeferedMethod): New. Dummy executable object used when queuing calls blocking on
introspection data
- (ProxyMethod::__call__): add the timeout keyword for specifying longer or
shorter timeouts for method calls
- (ProxyObject): Add first pass at an introspection state machine
- (ProxyObject::__init__): Add introspect keyword for turing off an on
introspection.
- (ProxyObject::_Introspect): Internal Introspect call that bypasses the usual
mechanisms for sending messages. This is to avoid a deadlock where the Intospect
call would be queued waiting for the Introspect call to finish ;-)
- (ProxyObject::_introspect_reply_handler): New. This method is called when
introspection returns with no error
- (ProxyObject::_introspect_error_handler): New. This method is called when
introspection encounters an error
- (ProxyObject::__getattr__): Code to handle different introspection states.
Queue async calls or block blocking calls if we are introspecting. Pass through
as normal if we are not or are done with introspecting.
* python/service.py: Import signal and method from decorators.py
* python/types.py: Add Variant type
proxies.py, service.py: Cleanup of code after running it through the
pyflakes code checker mostly dealing with undefined names.
(Bug #3828, Patch from Anthony Baxter <anthony@interlink.com.au>)
2005-07-17 John (J5) Palmieri <johnp@redhat.com>
* NEWS: Update to 0.35.2
2005-07-17 John (J5) Palmieri <johnp@redhat.com>
* python/_dbus.py: Remove import of the dbus.services
module as it no longer exists (patch from Dimitur Kirov)
* python/service.py (Object::__init__): Fixed typo
s/name/bus_name (patch from Dimitur Kirov)
* python/examples/example-signal-emitter.py: import dbus.glib
to get the main loop and use glib mainloop instead of gtk so
X doesn't have to be running.
* python/examples/example-signal-recipient.py: import dbus.glib
to get the main loop and use glib mainloop instead of gtk so
X doesn't have to be running. Import the decorators module
directly.
* test/glib/Makefile.am: Added DIST_EXTRA files that distcheck
didn't pick up on but are needed to build
* configure.in: upped version to 0.35.2
* bus/driver.c, bus/selinux.c, bus/selinux.h, dbus/dbus-protocol.h:
added Colin Walters' SELinux API rename patch from head
s/unix sercurity context/selinux security context/
2005-07-16 John (J5) Palmieri <johnp@redhat.com>
* python/Makefile.am: dbus_binding.pxd.in should be included
in EXTRA_DIST not dbus_binding.pxd
fix up $(srcdir) hopefully for the last time
* NEWS: Update to 0.35.1
so distcheck doesn't fail
* glib/examples/Makefile.am: Add example-service.xml and
example-signal-emitter.xml to EXTRA_DIST so distcheck doesn't fail
* glib/examples/statemachine/Makefile.am: Add statemachine.xml and
statemachine-server.xml to EXTRA_DIST so distcheck doesn't fail
* python/Makefile.am: Preprend $(srcdir)/ to source files so the
compiler looks in the right places during distcheck
for sending messages to oneself (TODO item).
* python/service.py (class Object): Swap ordering of bus_name
and object_path parameters to better support inheritance.
* doc/dbus-tutorial.xml: change Python docs to reflect change
in parameter ordering and fix the inheritance section.
* doc/TODO: remove sending message to oneself TODO item
don't add a callback to the match if none has been passed in
* python/matchrules.py (SignalMatchTree::remove): if the rule
being matched does not have a callback treat it as a wildcard
fix matching logic
* doc/dbus-tutorial.xml: Add Python tutorial
2005-07-14 John (J5) Palmieri <johnp@redhat.com>
* bus/activation.c: clean up all tabs to be 8 spaces
(bus_activation_activate_service): make sure we clean up
if activation fails
* bus/dispatch.c: clean up all tabs to be 8 spaces
(check_shell_fail_service_auto_start): New function
tests to make sure we get fail properly when trying to auto start a service
with a faulty command line
(check_shell_service_success_auto_start): New function tests to make sure
auto started services get the arguments on the command line
* test/test-shell-service.c: Added service for testing auto-starting with
command line arguments
* test/data/valid-service-files/debug-shell-echo-fail.service.in,
test/data/valid-service-files/debug-shell-echo-success.service.in:
Added service files for testing auto-starting with command line arguments
* */.cvsignore: added a bunch of generated files to various .cvsignore files
2005-07-14 Rodrigo Moya <rodrigo@novell.com>
* dbus/dbus-shell.[ch]: copy/pasted code from GLib.
* dbus/Makefile.am: added new files to build.
* bus/activation.c (bus_activation_activate_service): support
activation commands with parameters.
* test/shell-test.c: added test program for the shell parsing
code.
* python/service.py (class Name): renamed BusName to make it clearer
what the object is for (a name on the bus)
* python/examples/example-service.py,
python/examples/example-signal-emitter.py: change the Name object to
BusName
* python/dbus_bindings.pyx: Added.
- Fixed some memleaks (patch from
Sean Meiners <sean.meiners@linspireinc.com>)
- Broke out the #include "dbus_h_wrapper.h" and put it in its
own pxd file (Pyrex definition)
- Broke out glib dependancies into its own pyx module
* python/dbus_bindings.pdx: Added.
- Defines C class Connection for exporting to other modules
* python/dbus_glib_bindings.pyx: Added.
- New module to handle lowlevel dbus-glib mainloop integration
* python/glib.py: Added.
- Registers the glib mainloop when you import this module
* python/services.py: Removed (renamed to service.py)
* python/service.py: Added.
- (class Server): renamed Name
* python/__init__.py: Bump ro version (0,41,0)
- don't import the decorators or service module
by default. These now reside in the dbus.service namespace
* python/_dbus.py (Bus::__init__): Add code run the main loop
setup function on creation
* python/examples/example-service.py,
python/examples/example-signal-emitter.py: update examples
* python/examples/gconf-proxy-service.py,
python/examples/gconf-proxy-service2.py: TODO fix these up
* doc/TODO: Addition
- Added a Python Bindings 1.0 section
- added "Add match on args or match on details to match rules"
cmessage_function_handler): Patch from
Anthony Baxter <anthony@interlink.com.au> fixes threading problems
by using the Py_GILState_Ensure/Release to synchronize with the
python runtime.
* python/dbus_bindings.pyx.in: Import size_t,
__int64_t, __uint64_t, and __signed.
* dbus/dbus-sysdeps.c <HAVE_CMSGCRED> (write_credentials_byte):
Define cmsg struct, output it.
(_dbus_read_credentials_unix_socket):
Use cmsg struct.
Patch from Joe Markus Clarke for FreeBSD support.
Async signals and various bugfixes and testing by
Ross Burton <ross@burtonini.com>.
* glib/dbus-gvalue.h: (struct DBusBasicGValue): Delete.
(dbus_gvalue_genmarshal_name_from_type)
(dbus_gvalue_ctype_from_type): Moved to dbus-binding-tool-glib.c.
(dbus_gtype_to_dbus_type): Renamed to dbus_gtype_from_signature.
(dbus_g_value_types_init, dbus_gtype_from_signature)
(dbus_gtype_from_signature_iter, dbus_gtype_to_signature)
(dbus_gtypes_from_arg_signature): New function prototypes.
(dbus_gvalue_demarshal): Take context and error arguments.
(dbus_gvalue_demarshal_variant): New function.
(dbus_gvalue_demarshal_message): New function.
(dbus_gvalue_store): Delete.
* glib/dbus-gvalue.c:
File has been almost entirely rewritten; now we special-case
more types such as DBUS_TYPE_SIGNATURE, handle arrays and
hash tables correctly, etc. Full support for recursive values
is not yet complete.
* glib/dbus-gproxy.c (dbus_g_proxy_class_init): Change last
argument of signal to G_TYPE_POINTER since we now pass a
structure.
(lookup_g_marshaller): Delete in favor of
_dbus_gobject_lookup_marshaller.
(marshal_dbus_message_to_g_marshaller): Use
_dbus_gobject_lookup_marshaller and dbus_gvalue_demarshal_message
to handle remote signal callbacks.
(dbus_g_proxy_new_from_proxy): New function; creates a new
DBusGProxy by copying an existing one.
(dbus_g_proxy_get_interface, dbus_g_proxy_set_interface)
(dbus_g_proxy_get_path): New functions.
(dbus_g_proxy_marshal_args_to_message): New function;
factored out of existing code.
(DBUS_G_VALUE_ARRAY_COLLECT_ALL): Collect all arguments
from a varargs array.
(dbus_g_proxy_begin_call_internal): New function.
(dbus_g_proxy_end_call_internal): New function.
(dbus_g_proxy_begin_call): Take GTypes instead of DBus types
as arguments; simply invoke dbus_g_proxy_begin_call_internal
after collecting args into value array.
(dbus_g_proxy_end_call): Take GTypes instead of DBus types;
invoke dbus_g_proxy_end_call_internal.
(dbus_g_proxy_invoke): Simply invoke begin_call_interanl and
end_call_internal.
(dbus_g_proxy_call_no_reply): Take GTypes instead of DBus
types.
(array_free_all): New function.
(dbus_g_proxy_add_signal): Take GTypes.
* glib/dbus-gobject.h:
(_dbus_glib_marshal_dbus_message_to_gvalue_array): Delete.
(_dbus_gobject_get_path, _dbus_gobject_lookup_marshaller):
Prototype.
* glib/dbus-gobject.c: Add a global marshal_table hash which
stores mappings from type signatures to marshallers. Change lots
of invocations of dbus_gtype_to_dbus_type to
dbus_gtype_to_signature.
(_dbus_glib_marshal_dbus_message_to_gvalue_array): Delete.
(introspect_signals): Fix test for query.return_type.
(set_object_property): Update invocation of dbus_gvalue_demarshal.
(invoke_object_method): Many changes. Handle asynchronous
invocations. Convert arguments with
dbus_gvalue_demarshal_message. Handle errors. Use
DBusSignatureIter instead of strlen on args. Handle all arguments
generically. Special-case variants.
(dbus_g_method_return, dbus_g_method_return_error): New function.
(DBusGSignalClosure): New structure, closes over signal
information.
(dbus_g_signal_closure_new): New function.
(dbus_g_signal_closure_finalize): New function.
(signal_emitter_marshaller): New function; is special marshaller
which emits signals on bus.
(export_signals): New function; introspects object signals and
connects to them.
(dbus_g_object_type_install_info): Take GType instead of
GObjectClass.
(dbus_g_connection_register_g_object): Invoke export_signals.
(dbus_g_connection_lookup_g_object): New function.
(DBusGFuncSignature) New structure; used for mapping type
signatures to marshallers.
(funcsig_hash): New function; hashes DBusGFuncSignature.
(funcsig_equal): New function; compares DBusGFuncSignature.
(_dbus_gobject_lookup_marshaller): New function.
(dbus_g_object_register_marshaller): New function; used to
register a marshaller at runtime for a particular signature.
* glib/dbus-gmain.c (_dbus_gmain_test): Add various tests.
* glib/dbus-binding-tool-glib.h: Add DBUS_GLIB_ANNOTATION_ASYNC
which notes a server method implementation should be
asynchronous.
* glib/dbus-binding-tool-glib.c
(dbus_binding_tool_output_glib_server): Call
dbus_g_value_types_init.
(write_formal_parameters): Use dbus_gtype_from_signature. Handle
variants specially.
(dbus_g_type_get_lookup_function): Turn GType into an invocation
of a lookup function.
(write_args_for_direction): Use dbus_g_type_get_lookup_function.
(write_untyped_out_args): New method; write output arguments.
(write_formal_declarations_for_direction): Function for
writing prototypes.
(write_formal_parameters_for_direction): Function for
writing implementations.
(write_typed_args_for_direction): Function for writing
arguments prefixed with GTypes.
(write_async_method_client): Write out async version
of method.
* glib/dbus-binding-tool-glib.c: Include dbus-gvalue-utils.h.
(dbus_g_type_get_marshal_name): Move mapping from GType
to marshal name into here.
(dbus_g_type_get_c_name): Move into here.
(compute_marshaller): Convert signature to type with
dbus_gtype_from_signature, use dbus_g_type_get_marshal_name.
(compute_marshaller_name): Ditto.
(compute_marshaller): Handle async signal annotations.
(gather_marshallers): Return if we don't have a known
prefix.
(generate_glue): Collect introspection blob here, and
write all of the blob at the end. This allows an object
with multiple interfaces to work.
Mark async methods in introspection blob.
* glib/Makefile.am (libdbus_glib_1_la_SOURCES): Add
dbus-gtype-specialized.c, dbus-gtype-specialized.h,
dbus-gvalue-utils.h, dbus-gvalue-utils.c.
* dbus/dbus-glib.h: Don't include dbus-protocol.h; this
avoids people accidentally using DBUS_TYPE_* which should
not be necessary anymore.
Do include dbus-gtype-specialized.h, which are utilities
for GLib container types.
Add various #defines for types such as
DBUS_TYPE_G_BOOLEAN_ARRAY.
(DBusGValueIterator, DBusGValue): Define, not fully used
yet.
(dbus_g_value_get_g_type): Type for recursive value.
(dbus_g_value_open, dbus_g_value_iterator_get_value)
(dbus_g_value_iterator_get_values, dbus_g_value_iterator_recurse)
(dbus_g_value_free): Prototypes.
(dbus_g_object_register_marshaller, dbus_g_proxy_new_from_proxy): Prototype.
(dbus_g_proxy_set_interface): Prototype.
(dbus_g_proxy_begin_call, dbus_g_proxy_end_call)
(dbus_g_proxy_call_no_reply): Take GLib types instead of DBus
types.
(dbus_g_proxy_get_path, dbus_g_proxy_get_interface):
Accessors.
(DBusGAsyncData, DBusGMethodInvocation): Structures for
doing async invocations.
(dbus_g_method_return, dbus_g_method_return_error):
Prototypes.
* doc/dbus-tutorial.xml: Update GLib section.
* tools/dbus-viewer.c (load_child_nodes): Update
for new invocation type of dbus_g_proxy_end_call.
(load_from_service_thread_func): Ditto.
* tools/print-introspect.c (main): Ditto.
* tools/dbus-names-model.c (have_names_notify)
(names_model_reload, names_model_set_connection)
Use GTypes.
* python/Makefile.am (INCLUDES): Define DBUS_COMPILATION,
needed since Python bindings use GLib bindings.
* test/glib/Makefile.am (INCLUDES): Define DBUS_COMPILATION.
Add --prefix argument.
* tools/Makefile.am: Define DBUS_COMPILATION. Remove
unneeded --ignore-unsupported arg.
* test/glib/test-service-glib.c:
* test/glib/test-service-glib.xml:
* test/glib/test-dbus-glib.c: Add many more tests.
for passing in the dbus message as keyword for edge case signal
handling
* python/matchrules.py (SignalMatchRule.__repr__): fix output
to conform with what dbus expects for match rules
(SignalMatchRule.execute): add the dbus message as a keyword
if the signal handler has requested it
* python/examples/example/signal-recipient.py: added some more
examples on how to hook up to signals
* python/proxies.py: minor formatting changes
* python/matchrules.py (SignalMatchRule, SignalMatchTree,
SignalMatchNode): new classes that implement wildcard signal
callback matching using a tree lookup. Heavily modified from a
patch sent by Celso Pinto (fd.o bug #3241)
* _dbus.py (add_signal_receiver, remove_signal_receiver, _signal_func):
use new match classes to handle signals.
when using recursive g_main_loops
* python/_dbus.py (class Bus): add the ProxyObjectClass
alias for ProxyObject to make it easier for the Twisted
networking framework to integrate dbus.
* python/proxies.py (class ProxyObject): add the ProxyMethodClass
alias for ProxyMethod to make it easier for the Twisted
networking framework to integrate dbus.
* python/proxies.py (ProxyObject.__getattr__): add further patch
from Anthony Baxter to throw an AttributeError when python
__special__ functions are called instead of marshling them over
the bus (Bug#1685 comment 3).
shared libraries (Bug#2494)
* python/exceptions.py: bring exceptions over from the bindings
so they can be used in applications (Bug#2036)
Make all exceptions derive from DBusException
* python/_dbus.py, python/proxies.py: implement __repr__ in a couple
of classes so that print obj doesn't throw an exception (Bug #1685)
- added new type classes for hinting to the marashaler what type
to send over the wire
- added int16 and uint16 marshalers
- Fixed a bug in the type constants that caused int32 to go out
as uint16 over the wire
* python/dbus.py: split up into different files and renamed _dbus.py
* python/__init__.py, python/_util.py, python/decorators.py,
python/exceptions.py, python/proxies.py, python/services.py,
python/types.py: new files split off from dbus.py
* python/Makefile.am: Add new files, remove dbus.py and
install all python files to <python module dir>/dbus
* python/examples/*: Added #!/usr/bin/env python to the top of
every example. Patch provided by Tatavarty Kalyan
method for doing async calls
(_pending_call_notification): New C function for handling pendning call
callbacks
(set_notify): New method for setting pending call notification
* python/dbus.py: new version tuple "version" is set at (0, 40, 0)
Async capabilities added to remote method calls
(Sender): class removed
(RemoteService): class removed
(ObjectTree): class removed for now
(RemoteObject): Renamed to ProxyObject
(RemoteMethod): Renamed to ProxyMethod
(method): Decorator added for decorating python methods as dbus methods
(signal): Decorator added for decorating python methods as signal emitters
(ObjectType): Metaclass added for generating introspection data and the
method callback vtable
(Interface): Wrapper class added to wrap objects in a dbus interface
(Object): Uses ObjectType as its metaclass and exports Introspect
of the org.freedesktop.DBus.Introspectable interface
(ValidationException, UnknownMethodException): new exceptions
* python/examples/*: Modified to fit with the new bindings
code so that it compiles with gcc4.0
* python/Makefile.am: Added lvalue_cast_post_process.py to EXTRA_DIST
run dbus_bindings.c through lvalue_cast_post_process.py and copy the
results back to dbus_binding.c
(Bus::add_signal_receiver): added expand_args parameter which defaults
to True. When expand args is True the signal handler will pass the
message arguments as parameters to the signal handler. If False
revert to previous behavior where the signal handler must get the
argument list from the message. This is to help port applications
like HAL that have a tendancy to send variable length argument lists.
self._match_rule_to_receivers is now a dict of dicts.
(Bus::remove_signal_receiver): pop handler off the dict intead of
removing it from a list
(Bus::_signal_func): change signal handlers so that interface,
signal_name, service, path and message are packed into a Sender
object and that is passed to the handler. If expand_args is True
extract the args list from the message and append it to the parameter
list
* python/dbus_bindings.pyx.in (class Signature): added to support
signiature types
(MessageIter::__init__): changed iteration limit to match D-BUS
(MessageIter::get*): added INT16, UINT16, SIGNATURE, DICT_ENTRY,
STRUCT and VARIENT type support
(MessageIter::python_value_to_dbus_sig): made recursive to support
recursive types
(MessageIter::append*): added Signature, dict, tuple
support
* python/examples/example-client.py: added examples of getting tuples
and dicts
* python/examples/example-service.py: added examples of sending tuples
and dicts
* python/examples/example-signal-recipient.py: Fixed to handle new
signal callback format
- BUS_ACTIVATION -> BUS_STARTER
- DBUS_BUS_ACTIVATION -> DBUS_BUS_STARTER
- class MessageIter (__init__): Added recursion checking
so we throw a nice error instead of just disconnecting from the
bus.
(get): Added arg_type parameter for recursion.
Removed the nil type
Added signiture type placeholder (not implemented)
Added struct type placeholder (not implemented)
Added varient type placeholder (not implemented)
Commented out dict type for now
(get_element_type): renamed from get_array_type
(get_*): changed to use the dbus_message_iter_get_basic API
(get_*_array): removed in favor of recursive get_array method
(get_array): new recursive method which calls get to marshal
the elements of the array
(value_to_dbus_sig): New method returns the corrasponding
dbus signiture to a python value
(append): Comment out dict handling for now
Handle lists with the new recursive API
Comment out None handling for now
(append_nil): removed
(append_*): changed to use dbus_message_iter_append_basic API
(append_*_array): removed in favor of recursive append_array
method
(__str__): Make it easier to print out recursive iterators
for debugging
- class Message (__str__): moved type inspection to the
MessageIter class' __str__ method
(get_iter): Added an append parameter wich defaults to False
If True use the new API's to create an append iterator
* python/dbus.py: Update to use new bindings API
- TYPE_ACTIVATION -> TYPE_STARTER
- class Bus (_get_match_rule): GetServiceOwner -> GetNameOwner
- class ActivationBus -> class StarterBus
- class RemoteObject (__call__): get an append iterator
- (_dispatch_dbus_method_call): get an append iterator
- class Object (emit_signal): get an append iterator
* python/examples/: Fixed up the examples to work with the new API
* python/dbus_bindings.pyx.in: Change DBUS_ACTIVATION_REPLY_ACTIVATED
and DBUS_ACTIVATION_REPLY_ALREADY_ACTIVE to match the values in
dbus-protocol.h. Because they are defines and not enums they are not
autogenerated.
* python/dbus_bindings.pyx.in (bus_activate_service): Bind
dbus_bus_activate_service
* python/dbus.py (Bus.activate_service): activate a service on the
bus.
- wrap bus_get_unix_user method in low level bindings
- add get_unix_user method to the Bus class
- fix extract.py so it can handle unsigned long return types
* python/dbus.py:
* python/dbus_bindings.pyx.in:
* python/tests/test-client.py:
Add dbus.ByteArray and dbus_bindings.ByteArray
types so that byte streams can be passed back.
Give jdahlin the heaps of credit that are so
rightfully his.
* python/dbus.py:
Add message argument to the default object_method_handler
function.
* python/dbus_bindings.pyx.in:
Automatically return NIL when passed an empty list
(we can't pass back a list since lists are typed
and we don't have any idea what type the the client
intended the list to be... :-( )
* python/dbus.py:
Add "message" argument to service-side dbus.Object
methods. This will break existing services written
using the python bindings, but will allow extraction
of all the message information (e.g. who its from).
Add improved "object oriented" signal handling/emission.
* python/examples/example-service.py:
Nix this example.
* python/examples/example-signal-emitter.py:
* python/examples/example-signal-recipient.py:
Two new examples that show how to emit and receive
signals using the new APIs.
* python/examples/example-signals.py:
* python/examples/gconf-proxy-service.py:
* python/examples/gconf-proxy-service2.py:
Add "message" argument to service methods.
* python/dbus_bindings.pyx.in:
* python/tests/test-client.py:
Round off basic type support. Add dicts (yay!), and
remaining array types.
Make MessageIter more general so it works for dicts too.
Mark all loop variables as C integers.
* python/dbus.py:
Add a nicer-but-less-flexible alternate API for handling
calls to virtual objects in dbus.ObjectTree.
Screw up the argument order to the dbus.Object constructor
for consistency with dbus.ObjectTree (and to make dbus_methods
optional for future extension)
* python/examples/Makefile.am:
* python/examples/gconf-proxy-service.py:
* python/examples/gconf-proxy-service2.py:
Alternate implementation of gconf-proxy-service using the
nicer dbus.ObjectTree API.
* python/examples/example-service.py:
* python/tests/test-server.py
Reverse the argument order to deal with dbus.Object constructor
changes.
* python/examples/example-client.py:
* python/examples/example-service.py:
Take it back. Lists seem to work but they're broken
in the test suite. Make the base examples use
lists (works fine).
* python/dbus_bindings.pyx.in:
* python/tests/test-client.py:
Add some more tests and fix errors that crop up.
Unfortunately, currently it seems like marshalling
and unmarshalling of lists is completely broken :-(
* python/dbus_bindings.pyx.in:
Add support for ObjectPath type.
* python/dbus.py:
Refactor message handling code to a common function.
* python/tests/test-client.py:
* python/tests/test-server.py:
Add tests that check to make sure values of all types
can be echoed from a service w/o mangling.
* python/dbus.py:
Add ObjectTree class which allows implementation
of trees of "virtual" objects. Basically the python
wrapper for "register_fallback".
* python/examples/Makefile.am
* python/examples/gconf-proxy-client.py:
* python/examples/gconf-proxy-service.py:
Implement a simple GConf proxy service that supports
get/set on string and int GConf keys using the ObjectTree.
