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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2018 Red Hat, Inc.
*/
#ifndef __NM_DBUS_OBJECT_H__
#define __NM_DBUS_OBJECT_H__
/*****************************************************************************/
#include "c-list/src/c-list.h"
#include "nm-dbus-utils.h"
/*****************************************************************************/
typedef struct {
const char *path;
/* if path is of type NM_DBUS_EXPORT_PATH_NUMBERED(), we need a
* per-class counter when generating a new numbered path.
*
* Each NMDBusObjectClass instance has a shallow clone of the NMDBusObjectClass parent
* instance in every derived type. Hence we cannot embed the counter there directly,
* because it must be shared, e.g. between NMDeviceBond and NMDeviceEthernet.
* Make int_counter a pointer to the actual counter that is used by ever sibling
* class. */
long long unsigned *int_counter;
} NMDBusExportPath;
#define NM_DBUS_EXPORT_PATH_STATIC(basepath) \
({ \
((NMDBusExportPath) { \
.path = ""basepath"", \
}); \
})
#define NM_DBUS_EXPORT_PATH_NUMBERED(basepath) \
({ \
static long long unsigned _int_counter = 0; \
((NMDBusExportPath) { \
.path = ""basepath"/%llu", \
.int_counter = &_int_counter, \
}); \
})
/*****************************************************************************/
/* "org.freedesktop.NetworkManager.Device.Statistics" is a special interface,
* because although it has a legacy PropertiesChanged signal, it only notifies
* about properties that actually exist on that interface. That is, because it
* was added with 1.4.0 release, and thus didn't have the broken behavior like
* other legacy interfaces. Those notify about *all* properties, even if they
* are not part of that D-Bus interface. See also "include_in_legacy_property_changed"
* and "legacy_property_changed". */
extern const NMDBusInterfaceInfoExtended nm_interface_info_device_statistics;
/*****************************************************************************/
#define NM_TYPE_DBUS_OBJECT (nm_dbus_object_get_type ())
#define NM_DBUS_OBJECT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_DBUS_OBJECT, NMDBusObject))
#define NM_DBUS_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), NM_TYPE_DBUS_OBJECT, NMDBusObjectClass))
#define NM_IS_DBUS_OBJECT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NM_TYPE_DBUS_OBJECT))
#define NM_IS_DBUS_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), NM_TYPE_DBUS_OBJECT))
#define NM_DBUS_OBJECT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), NM_TYPE_DBUS_OBJECT, NMDBusObjectClass))
#define NM_DBUS_OBJECT_EXPORTED_CHANGED "exported-changed"
/* NMDBusObject and NMDBusManager cooperate strongly. Hence, there is an
* internal data structure attached to the NMDBusObject accessible to both of them. */
struct _NMDBusObjectInternal {
char *path;
NMDBusManager *bus_manager;
CList objects_lst;
CList registration_lst_head;
/* we perform asynchronous operation on exported objects. For example, we receive
* a Set property call, and asynchronously validate the operation. We must make
* sure that when the authentication is complete, that we are still looking at
* the same (exported) object. In the meantime, the object could have been
* unexported, or even re-exported afterwards. If that happens, we want
* to fail the request. For that, we keep track of a version id. */
guint64 export_version_id;
bool is_unexporting:1;
};
struct _NMDBusObject {
GObject parent;
struct _NMDBusObjectInternal internal;
};
#define NM_DEFINE_DBUS_INTERFACE_INFO(...) \
((NMDBusInterfaceInfo *) (&((const NMDBusInterfaceInfo) { \
__VA_ARGS__ \
})))
typedef struct {
GObjectClass parent;
NMDBusExportPath export_path;
const NMDBusInterfaceInfoExtended *const*interface_infos;
bool export_on_construction;
} NMDBusObjectClass;
GType nm_dbus_object_get_type (void);
static inline NMDBusManager *
nm_dbus_object_get_manager (NMDBusObject *obj)
{
nm_assert (NM_IS_DBUS_OBJECT (obj));
return obj->internal.bus_manager;
}
static inline guint64
nm_dbus_object_get_export_version_id (NMDBusObject *obj)
{
nm_assert (NM_IS_DBUS_OBJECT (obj));
return obj->internal.export_version_id;
}
/**
* nm_dbus_object_get_path:
* @self: an #NMDBusObject
*
* Gets @self's D-Bus path.
*
* Returns: @self's D-Bus path, or %NULL if @self is not exported.
*/
static inline const char *
nm_dbus_object_get_path (NMDBusObject *self)
{
g_return_val_if_fail (NM_IS_DBUS_OBJECT (self), NULL);
return self->internal.path;
}
/**
* nm_dbus_object_is_exported:
* @self: an #NMDBusObject
*
* Checks if @self is exported
*
* Returns: %TRUE if @self is exported
*/
static inline gboolean
nm_dbus_object_is_exported (NMDBusObject *self)
{
return !!nm_dbus_object_get_path (self);
}
static inline const char *
nm_dbus_object_get_path_still_exported (NMDBusObject *self)
{
g_return_val_if_fail (NM_IS_DBUS_OBJECT (self), NULL);
/* like nm_dbus_object_get_path(), however, while unexporting
* (exported-changed signal), returns %NULL instead of the path. */
return self->internal.is_unexporting
? NULL
: self->internal.path;
}
const char *nm_dbus_object_export (NMDBusObject *self);
void nm_dbus_object_unexport (NMDBusObject *self);
void _nm_dbus_object_clear_and_unexport (NMDBusObject **location);
#define nm_dbus_object_clear_and_unexport(location) _nm_dbus_object_clear_and_unexport ((NMDBusObject **) (location))
void nm_dbus_object_emit_signal_variant (NMDBusObject *self,
const NMDBusInterfaceInfoExtended *interface_info,
const GDBusSignalInfo *signal_info,
GVariant *args);
void nm_dbus_object_emit_signal (NMDBusObject *self,
const NMDBusInterfaceInfoExtended *interface_info,
const GDBusSignalInfo *signal_info,
const char *format,
...);
#endif /* __NM_DBUS_OBJECT_H__ */
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