Awesome

DBus for Lua.

ldbus is a C binding to dbus for Lua.

Compatible with Lua 5.1, 5.2, 5.3 and 5.4 (thanks compat-5.3).

Status

Installation

ldbus is on luarocks: https://luarocks.org/modules/daurnimator/ldbus

Install via luarocks, you will need to provide paths to dbus/dbus.h and dbus/dbus-arch-deps.h

luarocks install --server=http://luarocks.org/manifests/daurnimator ldbus DBUS_INCDIR=/usr/include/dbus-1.0/ DBUS_ARCH_INCDIR=/usr/lib/dbus-1.0/include

Usage

example.lua is a lua version of Matthew Johnson's example

Bound from C

Functions that normally take a DBusError return nil, "error_message" on failure.
Errors will be thrown on out of memory

C	Lua	Comments
`dbus_bus_get()`	`ldbus.bus.get()`	Takes `type` as one of `"session"`, `"system"` or `"starter"`. The connection will not have `exit_on_disconnect` set.
`dbus_bus_get_private()`	`ldbus.bus.get_private()`	Takes `type` as one of `"session"`, `"system"` or `"starter"`. The connection will not have `exit_on_disconnect` set.
`dbus_bus_register()`	`ldbus.bus.register()`
`dbus_bus_set_unique_name()`	`ldbus.bus.set_unique_name()`
`dbus_bus_get_unique_name()`	`ldbus.bus.get_unique_name()`
`dbus_bus_request_name()`	`ldbus.bus.request_name()`	Takes `flags` as a table contain keys `"allow_replacement"`, `"do_not_queue"` and `"replace_existing"`; On success returns one of `"primary_owner"`, `"in_queue"`, `"exists"` or `"already_owner"`
`dbus_bus_release_name()`	`ldbus.bus.release_name()`	On success, returns one of `"released"`, `"non_existant"` or `"not_owner"`
`dbus_bus_name_has_owner()`	`ldbus.bus.name_has_owner()`
`dbus_bus_start_service_by_name()`	`ldbus.bus.start_service_by_name()`
`dbus_bus_add_match()`	`ldbus.bus.add_match()`	On success, returns one of `"success"` or `"already_running"`
`dbus_bus_remove_match()`	`ldbus.bus.remove_match()`
`dbus_connection_open()`	`ldbus.connection.open()`
`dbus_connection_get_is_connected()`	`my_conn:get_is_connected()`
`dbus_connection_get_is_authenticated()`	`my_conn:get_is_authenticated()`
`dbus_connection_get_is_anonymous()`	`my_conn:get_is_anonymous()`
`dbus_connection_get_server_id()`	`my_conn:get_server_id()`
`dbus_connection_send()`	`my_conn:send()`
`dbus_connection_send_with_reply()`	`pending_call = my_conn:send_with_reply(msg [, timeout])`	Timeout is in seconds, when not provided there will be no timeout.
`dbus_connection_send_with_reply_and_block()`	`response_msg = my_conn:send_with_reply_and_block(msg [, timeout])`	Timeout is in seconds, when not provided there will be no timeout.
`dbus_connection_flush()`	`my_conn:flush()`
`dbus_connection_read_write_dispatch()`	`my_conn:read_write_dispatch()`
`dbus_connection_read_write()`	`my_conn:read_write()`
`dbus_connection_pop_message()`	`my_conn:pop_message()`
`dbus_connection_get_dispatch_status()`	`my_conn:get_dispatch_status()`
`dbus_connection_dispatch()`	`my_conn:dispatch()`
`dbus_connection_set_watch_functions()`	`my_conn:set_watch_functions()`
`dbus_connection_set_timeout_functions()`	`my_conn:set_timeout_functions()`
`dbus_connection_set_dispatch_status_function()`	`my_conn:set_dispatch_status_function()`
`dbus_connection_set_wakeup_main_function()`	`my_conn:set_wakeup_main_function(callback)`
`dbus_connection_register_object_path()`	`my_conn:register_object_path()`
`dbus_connection_register_fallback()`	`my_conn:register_fallback()`
`dbus_connection_unregister_object_path()`	`my_conn:unregister_object_path()`
`dbus_connection_set_max_message_size()`	`my_conn:set_max_message_size()`
`dbus_connection_get_max_message_size()`	`my_conn:get_max_message_size()`
`dbus_connection_set_max_received_size()`	`my_conn:set_max_received_size()`
`dbus_connection_get_max_received_size()`	`my_conn:get_max_received_size()`
`dbus_connection_get_outgoing_size()`	`my_conn:get_outgoing_size()`
`dbus_connection_has_messages_to_send()`	`my_conn:has_messages_to_send()`
`dbus_message_new()`	`ldbus.message.new(type_str)`	The type is taken as a string (uses `dbus_message_type_from_string()`)
`dbus_message_new_method_call()`	`ldbus.message.new_method_call()`
`dbus_message_new_signal()`	`ldbus.message.new_signal()`
`dbus_message_get_serial()`	`my_message:get_serial()`
`dbus_message_set_reply_serial()`	`my_message:set_reply_serial()`
`dbus_message_get_reply_serial()`	`my_message:get_reply_serial()`
`dbus_message_new_method_return()`	`my_message:new_method_return()`
`dbus_message_new_error()`	`my_message:new_error()`
`dbus_message_copy()`	`my_message:copy()`
`dbus_message_get_type()`	`my_message:get_type()`
`dbus_message_iter_init()`	`my_iter = my_message:iter_init([my_iter])`	Returns `nil` if message has no arguments
`dbus_message_iter_init_append()`	`my_iter = my_message:iter_init_append([my_iter])`
`dbus_message_set_no_reply()`	`my_message:set_no_reply()`
`dbus_message_get_no_reply()`	`my_message:get_no_reply()`
`dbus_message_set_auto_start()`	`my_message:set_auto_start()`
`dbus_message_get_auto_start()`	`my_message:get_auto_start()`
`dbus_message_set_path()`	`my_message:set_path()`
`dbus_message_get_path()`	`my_message:get_path()`
`dbus_message_get_path_decomposed()`	`my_message:get_path_decomposed()`
`dbus_message_set_interface()`	`my_message:set_interface()`
`dbus_message_get_interface()`	`my_message:get_interface()`
`dbus_message_set_member()`	`my_message:set_member()`
`dbus_message_get_member()`	`my_message:get_member()`
`dbus_message_set_error_name()`	`my_message:set_error_name()`
`dbus_message_get_error_name()`	`my_message:get_error_name()`
`dbus_message_set_destination()`	`my_message:set_destination()`
`dbus_message_get_destination()`	`my_message:get_destination()`
`dbus_message_set_sender()`	`my_message:set_sender()`
`dbus_message_get_sender()`	`my_message:get_sender()`
`dbus_message_get_signature()`	`my_message:get_signature()`
`dbus_message_iter_has_next()`	`bool = my_message_iter:has_next()`
`dbus_message_iter_next()`	`bool = my_message_iter:next()`
`dbus_message_iter_get_element_type()`	`type = my_message_iter:get_element_type()`	`DBUS_TYPE_INVALID` is returned as `nil`
`dbus_message_iter_recurse()`	`sub_iter = my_message_iter:recurse([sub_iter])`	Creates a new `DBusMessageIter` if one is not passed
`dbus_message_iter_get_signature()`	`sig = my_message_iter:get_signature()`
`dbus_message_iter_get_basic()`	`object = my_message_iter:get_basic()`	number types are all returned as lua numbers (even 64bit integers at the moment; so watch out); strings, object paths and signatures will be returned as strings
`dbus_message_iter_append_basic()`	`my_message_iter:append_basic(object [, type])`
`dbus_message_iter_open_container()`	`sub_iter = my_message_iter:open_container(type [, sign [, sub_iter]])`	Creates `sub_iter` if not passed. Returns the `sub_iter` or `nil` on failure
`dbus_message_iter_close_container()`	`ok = my_message_iter:close_container(sub_iter)`
`dbus_pending_call_set_notify()`	`my_pending_call:set_notify(callback)`	Callback gets no arguments
`dbus_pending_call_cancel()`	`my_pending_call:cancel()`
`dbus_pending_call_get_completed()`	`completed = my_pending_call:get_completed()`
`dbus_pending_call_steal_reply()`	`message = my_pending_call:steal_reply()`
`dbus_pending_call_block()`	`my_pending_call:block()`
`dbus_timeout_get_interval()`	`secs = my_timeout:get_interval()`	Returned number is in seconds (rather than milliseconds)
`dbus_timeout_handle()`	`ok = my_timeout:handle()`
`dbus_timeout_get_enabled()`	`enabled = my_timeout:get_enabled()`
`DBUS_WATCH_READABLE`	`ldbus.watch.READABLE`
`DBUS_WATCH_WRITABLE`	`ldbus.watch.WRITABLE`
`DBUS_WATCH_HANGUP`	`ldbus.watch.HANGUP`
`DBUS_WATCH_ERROR`	`ldbus.watch.ERROR`
`dbus_watch_get_unix_fd()`	`fd = my_watch:get_unix_fd()`	Returns `nil` when no fd is available
`dbus_watch_get_socket()`	`fd = my_watch:get_socket()`	Returns `nil` when no fd is available
`dbus_watch_get_flags()`	`flags = my_watch:get_flags()`	`flags` will be the a number
`dbus_watch_handle()`	`ok = my_watch:handle(flags)`
`dbus_watch_get_enabled()`	`enabled = my_watch:get_enabled()`

Other

`ldbus.types`

A table of the dbus types from name to type (as a character)

key	value
`"boolean"`	`"b"`
`"byte"`	`"y"`
`"double"`	`"d"`
`"int16"`	`"n"`
`"int32"`	`"i"`
`"int64"`	`"x"`
`"uint16"`	`"q"`
`"uint32"`	`"u"`
`"uint64"`	`"t"`
`"string"`	`"s"`
`"signature"`	`"g"`
`"object_path"`	`"o"`
`"array"`	`"a"`
`"dict_entry"`	`"e"`
`"variant"`	`"v"`
`"struct"`	`"r"`

`ldbus.basic_types`

A table of the dbus basic types from name to type (as a character)

key	value
`"boolean"`	`"b"`
`"byte"`	`"y"`
`"double"`	`"d"`
`"int16"`	`"n"`
`"int32"`	`"i"`
`"int64"`	`"x"`
`"uint16"`	`"q"`
`"uint32"`	`"u"`
`"uint64"`	`"t"`
`"string"`	`"s"`
`"signature"`	`"g"`
`"object_path"`	`"o"`

`my_iter = ldbus.message.iter.new()`

Creates a new DBusMessageIter object

`new_iter = my_iter:clone()`

Creates a copy of the given DBusMessageIter