systemd/dbus.h

/*-*- Mode: C; c-basic-offset: 8 -*-*/

#ifndef foodbushfoo
#define foodbushfoo

/***
  This file is part of systemd.

  Copyright 2010 Lennart Poettering

  systemd 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.

  systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
***/

#include <dbus/dbus.h>

#include "manager.h"

typedef int (*BusPropertyCallback)(Manager *m, DBusMessageIter *iter, const char *property, void *data);

typedef struct BusProperty {
        const char *interface;           /* interface of the property */
        const char *property;            /* name of the property */
        BusPropertyCallback append;      /* Function that is called to serialize this property */
        const char *signature;
        void *data;                      /* The data of this property */
} BusProperty;

#define BUS_PROPERTIES_INTERFACE                                        \
        " <interface name=\"org.freedesktop.DBus.Properties\">"         \
        "  <method name=\"Get\">"                                       \
        "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>"      \
        "   <arg name=\"property\" direction=\"in\" type=\"s\"/>"       \
        "   <arg name=\"value\" direction=\"out\" type=\"v\"/>"         \
        "  </method>"                                                   \
        "  <method name=\"GetAll\">"                                    \
        "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>"      \
        "   <arg name=\"properties\" direction=\"out\" type=\"a{sv}\"/>" \
        "  </method>"                                                   \
        " </interface>"

#define BUS_INTROSPECTABLE_INTERFACE                                    \
        " <interface name=\"org.freedesktop.DBus.Introspectable\">"     \
        "  <method name=\"Introspect\">"                                \
        "   <arg name=\"data\" type=\"s\" direction=\"out\"/>"          \
        "  </method>"                                                   \
        " </interface>"

int bus_init_system(Manager *m);
int bus_init_api(Manager *m);
void bus_done_system(Manager *m);
void bus_done_api(Manager *m);

unsigned bus_dispatch(Manager *m);

void bus_watch_event(Manager *m, Watch *w, int events);
void bus_timeout_event(Manager *m, Watch *w, int events);

DBusHandlerResult bus_default_message_handler(Manager *m, DBusMessage *message, const char* introspection, const BusProperty *properties);

DBusHandlerResult bus_send_error_reply(Manager *m, DBusMessage *message, DBusError *bus_error, int error);

int bus_property_append_string(Manager *m, DBusMessageIter *i, const char *property, void *data);
int bus_property_append_strv(Manager *m, DBusMessageIter *i, const char *property, void *data);
int bus_property_append_bool(Manager *m, DBusMessageIter *i, const char *property, void *data);
int bus_property_append_uint32(Manager *m, DBusMessageIter *i, const char *property, void *data);
int bus_property_append_uint64(Manager *m, DBusMessageIter *i, const char *property, void *data);

extern const DBusObjectPathVTable bus_manager_vtable;
extern const DBusObjectPathVTable bus_job_vtable;
extern const DBusObjectPathVTable bus_unit_vtable;

void bus_unit_send_change_signal(Unit *u);
void bus_unit_send_removed_signal(Unit *u);

void bus_job_send_change_signal(Job *j);
void bus_job_send_removed_signal(Job *j);

#define DEFINE_BUS_PROPERTY_APPEND_ENUM(function,name,type)            \
        static int function(Manager *m, DBusMessageIter *i, const char *property, void *data) { \
                const char *value;                                      \
                type *field = data;                                     \
                                                                        \
                assert(m);                                              \
                assert(i);                                              \
                assert(property);                                       \
                                                                        \
                value = name##_to_string(*field);                       \
                                                                        \
                if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &value)) \
                        return -ENOMEM;                                 \
                                                                        \
                return 0;                                               \
        }

#endif