814d49f0b4
These helpers simplify adding dbus-matches by allowing var-arg arguments to assemble the matching rules.
108 lines
4.0 KiB
C
108 lines
4.0 KiB
C
/*
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* Copyright © 2013 David Herrmann <dh.herrmann@gmail.com>
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee, provided
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* that the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of the copyright holders not be used in
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* advertising or publicity pertaining to distribution of the software
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* without specific, written prior permission. The copyright holders make
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* no representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
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* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _WESTON_DBUS_H_
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#define _WESTON_DBUS_H_
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#include "config.h"
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#include <errno.h>
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#include <wayland-server.h>
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#include "compositor.h"
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#ifdef HAVE_DBUS
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#include <dbus/dbus.h>
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/*
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* weston_dbus_open() - Open new dbus connection
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*
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* Opens a new dbus connection to the bus given as @bus. It automatically
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* integrates the new connection into the main-loop @loop. The connection
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* itself is returned in @out.
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* This also returns a context source used for dbus dispatching. It is
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* returned on success in @ctx_out and must be passed to weston_dbus_close()
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* unchanged. You must not access it from outside of a dbus helper!
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*
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* Returns 0 on success, negative error code on failure.
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*/
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int weston_dbus_open(struct wl_event_loop *loop, DBusBusType bus,
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DBusConnection **out, struct wl_event_source **ctx_out);
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/*
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* weston_dbus_close() - Close dbus connection
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*
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* Closes a dbus connection that was previously opened via weston_dbus_open().
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* It unbinds the connection from the main-loop it was previously bound to,
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* closes the dbus connection and frees all resources. If you want to access
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* @c after this call returns, you must hold a dbus-reference to it. But
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* notice that the connection is closed after this returns so it cannot be
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* used to spawn new dbus requests.
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* You must pass the context source returns by weston_dbus_open() as @ctx.
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*/
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void weston_dbus_close(DBusConnection *c, struct wl_event_source *ctx);
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/*
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* weston_dbus_add_match() - Add dbus match
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*
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* Configure a dbus-match on the given dbus-connection. This match is saved
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* on the dbus-server as long as the connection is open. See dbus-manual
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* for information. Compared to the dbus_bus_add_match() this allows a
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* var-arg formatted match-string.
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*/
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int weston_dbus_add_match(DBusConnection *c, const char *format, ...);
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/*
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* weston_dbus_add_match_signal() - Add dbus signal match
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*
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* Same as weston_dbus_add_match() but does the dbus-match formatting for
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* signals internally.
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*/
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int weston_dbus_add_match_signal(DBusConnection *c, const char *sender,
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const char *iface, const char *member,
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const char *path);
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/*
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* weston_dbus_remove_match() - Remove dbus match
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*
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* Remove a previously configured dbus-match from the dbus server. There is
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* no need to remove dbus-matches if you close the connection, anyway.
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* Compared to dbus_bus_remove_match() this allows a var-arg formatted
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* match string.
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*/
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void weston_dbus_remove_match(DBusConnection *c, const char *format, ...);
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/*
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* weston_dbus_remove_match_signal() - Remove dbus signal match
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*
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* Same as weston_dbus_remove_match() but does the dbus-match formatting for
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* signals internally.
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*/
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void weston_dbus_remove_match_signal(DBusConnection *c, const char *sender,
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const char *iface, const char *member,
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const char *path);
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#endif /* HAVE_DBUS */
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#endif // _WESTON_DBUS_H_
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