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/* -*- mode: C; c-file-style: "gnu" -*- */
/* dbus-connection.h DBusConnection object
*
* Copyright (C) 2002, 2003 Red Hat Inc.
*
* Licensed under the Academic Free License version 2.1
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#if !defined (DBUS_INSIDE_DBUS_H) && !defined (DBUS_COMPILATION)
#error "Only <dbus/dbus.h> can be included directly, this file may disappear or change contents."
#endif
#ifndef DBUS_CONNECTION_H
#define DBUS_CONNECTION_H
#include <dbus/dbus-errors.h>
#include <dbus/dbus-memory.h>
#include <dbus/dbus-message.h>
#include <dbus/dbus-shared.h>
DBUS_BEGIN_DECLS
/**
* @addtogroup DBusConnection
* @{
*/
/* documented in dbus-watch.c */
typedef struct DBusWatch DBusWatch;
/* documented in dbus-timeout.c */
typedef struct DBusTimeout DBusTimeout;
/** Opaque type representing preallocated resources so a message can be sent without further memory allocation. */
typedef struct DBusPreallocatedSend DBusPreallocatedSend;
/** Opaque type representing a method call that has not yet received a reply. */
typedef struct DBusPendingCall DBusPendingCall;
/** Opaque type representing a connection to a remote application and associated incoming/outgoing message queues. */
typedef struct DBusConnection DBusConnection;
/** Set of functions that must be implemented to handle messages sent to a particular object path. */
typedef struct DBusObjectPathVTable DBusObjectPathVTable;
/**
* Indicates the status of a #DBusWatch.
*/
typedef enum
{
DBUS_WATCH_READABLE = 1 << 0, /**< As in POLLIN */
DBUS_WATCH_WRITABLE = 1 << 1, /**< As in POLLOUT */
DBUS_WATCH_ERROR = 1 << 2, /**< As in POLLERR (can't watch for
* this, but can be present in
* current state passed to
* dbus_watch_handle()).
*/
DBUS_WATCH_HANGUP = 1 << 3 /**< As in POLLHUP (can't watch for
* it, but can be present in current
* state passed to
* dbus_watch_handle()).
*/
} DBusWatchFlags;
/**
* Indicates the status of incoming data on a #DBusConnection. This determines whether
* dbus_connection_dispatch() needs to be called.
*/
typedef enum
{
DBUS_DISPATCH_DATA_REMAINS, /**< There is more data to potentially convert to messages. */
DBUS_DISPATCH_COMPLETE, /**< All currently available data has been processed. */
DBUS_DISPATCH_NEED_MEMORY /**< More memory is needed to continue. */
} DBusDispatchStatus;
/** Called when libdbus needs a new watch to be monitored by the main
* loop. Returns #FALSE if it lacks enough memory to add the
* watch. Set by dbus_connection_set_watch_functions() or
* dbus_server_set_watch_functions().
*/
typedef dbus_bool_t (* DBusAddWatchFunction) (DBusWatch *watch,
void *data);
/** Called when dbus_watch_get_enabled() may return a different value
* than it did before. Set by dbus_connection_set_watch_functions()
* or dbus_server_set_watch_functions().
*/
typedef void (* DBusWatchToggledFunction) (DBusWatch *watch,
void *data);
/** Called when libdbus no longer needs a watch to be monitored by the
* main loop. Set by dbus_connection_set_watch_functions() or
* dbus_server_set_watch_functions().
*/
typedef void (* DBusRemoveWatchFunction) (DBusWatch *watch,
void *data);
/** Called when libdbus needs a new timeout to be monitored by the main
* loop. Returns #FALSE if it lacks enough memory to add the
* watch. Set by dbus_connection_set_timeout_functions() or
* dbus_server_set_timeout_functions().
*/
typedef dbus_bool_t (* DBusAddTimeoutFunction) (DBusTimeout *timeout,
void *data);
/** Called when dbus_timeout_get_enabled() may return a different
* value than it did before.
* Set by dbus_connection_set_timeout_functions() or
* dbus_server_set_timeout_functions().
*/
typedef void (* DBusTimeoutToggledFunction) (DBusTimeout *timeout,
void *data);
/** Called when libdbus no longer needs a timeout to be monitored by the
* main loop. Set by dbus_connection_set_timeout_functions() or
* dbus_server_set_timeout_functions().
*/
typedef void (* DBusRemoveTimeoutFunction) (DBusTimeout *timeout,
void *data);
/** Called when the return value of dbus_connection_get_dispatch_status()
* may have changed. Set with dbus_connection_set_dispatch_status_function().
*/
typedef void (* DBusDispatchStatusFunction) (DBusConnection *connection,
DBusDispatchStatus new_status,
void *data);
/**
* Called when the main loop's thread should be notified that there's now work
* to do. Set with dbus_connection_set_wakeup_main_function().
*/
typedef void (* DBusWakeupMainFunction) (void *data);
/**
* Called during authentication on UNIX systems to check whether the given
* user ID is allowed to connect. Never called on Windows. Set with
* dbus_connection_set_unix_user_function().
*/
typedef dbus_bool_t (* DBusAllowUnixUserFunction) (DBusConnection *connection,
unsigned long uid,
void *data);
/**
* Called when a pending call now has a reply available. Set with
* dbus_pending_call_set_notify().
*/
typedef void (* DBusPendingCallNotifyFunction) (DBusPendingCall *pending,
void *user_data);
/**
* Called when a message needs to be handled. The result indicates whether or
* not more handlers should be run. Set with dbus_connection_add_filter().
*/
typedef DBusHandlerResult (* DBusHandleMessageFunction) (DBusConnection *connection,
DBusMessage *message,
void *user_data);
DBusConnection* dbus_connection_open (const char *address,
DBusError *error);
DBusConnection* dbus_connection_open_private (const char *address,
DBusError *error);
DBusConnection* dbus_connection_ref (DBusConnection *connection);
void dbus_connection_unref (DBusConnection *connection);
void dbus_connection_close (DBusConnection *connection);
dbus_bool_t dbus_connection_get_is_connected (DBusConnection *connection);
dbus_bool_t dbus_connection_get_is_authenticated (DBusConnection *connection);
void dbus_connection_set_exit_on_disconnect (DBusConnection *connection,
dbus_bool_t exit_on_disconnect);
void dbus_connection_flush (DBusConnection *connection);
dbus_bool_t dbus_connection_read_write_dispatch (DBusConnection *connection,
int timeout_milliseconds);
dbus_bool_t dbus_connection_read_write (DBusConnection *connection,
int timeout_milliseconds);
DBusMessage* dbus_connection_borrow_message (DBusConnection *connection);
void dbus_connection_return_message (DBusConnection *connection,
DBusMessage *message);
void dbus_connection_steal_borrowed_message (DBusConnection *connection,
DBusMessage *message);
DBusMessage* dbus_connection_pop_message (DBusConnection *connection);
DBusDispatchStatus dbus_connection_get_dispatch_status (DBusConnection *connection);
DBusDispatchStatus dbus_connection_dispatch (DBusConnection *connection);
dbus_bool_t dbus_connection_has_messages_to_send (DBusConnection *connection);
dbus_bool_t dbus_connection_send (DBusConnection *connection,
DBusMessage *message,
dbus_uint32_t *client_serial);
dbus_bool_t dbus_connection_send_with_reply (DBusConnection *connection,
DBusMessage *message,
DBusPendingCall **pending_return,
int timeout_milliseconds);
DBusMessage * dbus_connection_send_with_reply_and_block (DBusConnection *connection,
DBusMessage *message,
int timeout_milliseconds,
DBusError *error);
dbus_bool_t dbus_connection_set_watch_functions (DBusConnection *connection,
DBusAddWatchFunction add_function,
DBusRemoveWatchFunction remove_function,
DBusWatchToggledFunction toggled_function,
void *data,
DBusFreeFunction free_data_function);
dbus_bool_t dbus_connection_set_timeout_functions (DBusConnection *connection,
DBusAddTimeoutFunction add_function,
DBusRemoveTimeoutFunction remove_function,
DBusTimeoutToggledFunction toggled_function,
void *data,
DBusFreeFunction free_data_function);
void dbus_connection_set_wakeup_main_function (DBusConnection *connection,
DBusWakeupMainFunction wakeup_main_function,
void *data,
DBusFreeFunction free_data_function);
void dbus_connection_set_dispatch_status_function (DBusConnection *connection,
DBusDispatchStatusFunction function,
void *data,
DBusFreeFunction free_data_function);
dbus_bool_t dbus_connection_get_unix_user (DBusConnection *connection,
unsigned long *uid);
dbus_bool_t dbus_connection_get_unix_process_id (DBusConnection *connection,
unsigned long *pid);
void dbus_connection_set_unix_user_function (DBusConnection *connection,
DBusAllowUnixUserFunction function,
void *data,
DBusFreeFunction free_data_function);
void dbus_connection_set_route_peer_messages (DBusConnection *connection,
dbus_bool_t value);
int dbus_watch_get_fd (DBusWatch *watch);
unsigned int dbus_watch_get_flags (DBusWatch *watch);
void* dbus_watch_get_data (DBusWatch *watch);
void dbus_watch_set_data (DBusWatch *watch,
void *data,
DBusFreeFunction free_data_function);
dbus_bool_t dbus_watch_handle (DBusWatch *watch,
unsigned int flags);
dbus_bool_t dbus_watch_get_enabled (DBusWatch *watch);
int dbus_timeout_get_interval (DBusTimeout *timeout);
void* dbus_timeout_get_data (DBusTimeout *timeout);
void dbus_timeout_set_data (DBusTimeout *timeout,
void *data,
DBusFreeFunction free_data_function);
dbus_bool_t dbus_timeout_handle (DBusTimeout *timeout);
dbus_bool_t dbus_timeout_get_enabled (DBusTimeout *timeout);
/* Filters */
dbus_bool_t dbus_connection_add_filter (DBusConnection *connection,
DBusHandleMessageFunction function,
void *user_data,
DBusFreeFunction free_data_function);
void dbus_connection_remove_filter (DBusConnection *connection,
DBusHandleMessageFunction function,
void *user_data);
/* Other */
dbus_bool_t dbus_connection_allocate_data_slot (dbus_int32_t *slot_p);
void dbus_connection_free_data_slot (dbus_int32_t *slot_p);
dbus_bool_t dbus_connection_set_data (DBusConnection *connection,
dbus_int32_t slot,
void *data,
DBusFreeFunction free_data_func);
void* dbus_connection_get_data (DBusConnection *connection,
dbus_int32_t slot);
void dbus_connection_set_change_sigpipe (dbus_bool_t will_modify_sigpipe);
void dbus_connection_set_max_message_size (DBusConnection *connection,
long size);
long dbus_connection_get_max_message_size (DBusConnection *connection);
void dbus_connection_set_max_received_size (DBusConnection *connection,
long size);
long dbus_connection_get_max_received_size (DBusConnection *connection);
long dbus_connection_get_outgoing_size (DBusConnection *connection);
DBusPreallocatedSend* dbus_connection_preallocate_send (DBusConnection *connection);
void dbus_connection_free_preallocated_send (DBusConnection *connection,
DBusPreallocatedSend *preallocated);
void dbus_connection_send_preallocated (DBusConnection *connection,
DBusPreallocatedSend *preallocated,
DBusMessage *message,
dbus_uint32_t *client_serial);
/* Object tree functionality */
/**
* Called when a #DBusObjectPathVTable is unregistered (or its connection is freed).
* Found in #DBusObjectPathVTable.
*/
typedef void (* DBusObjectPathUnregisterFunction) (DBusConnection *connection,
void *user_data);
/**
* Called when a message is sent to a registered object path. Found in
* #DBusObjectPathVTable which is registered with dbus_connection_register_object_path()
* or dbus_connection_register_fallback().
*/
typedef DBusHandlerResult (* DBusObjectPathMessageFunction) (DBusConnection *connection,
DBusMessage *message,
void *user_data);
/**
* Virtual table that must be implemented to handle a portion of the
* object path hierarchy. Attach the vtable to a particular path using
* dbus_connection_register_object_path() or
* dbus_connection_register_fallback().
*/
struct DBusObjectPathVTable
{
DBusObjectPathUnregisterFunction unregister_function; /**< Function to unregister this handler */
DBusObjectPathMessageFunction message_function; /**< Function to handle messages */
void (* dbus_internal_pad1) (void *); /**< Reserved for future expansion */
void (* dbus_internal_pad2) (void *); /**< Reserved for future expansion */
void (* dbus_internal_pad3) (void *); /**< Reserved for future expansion */
void (* dbus_internal_pad4) (void *); /**< Reserved for future expansion */
};
dbus_bool_t dbus_connection_register_object_path (DBusConnection *connection,
const char *path,
const DBusObjectPathVTable *vtable,
void *user_data);
dbus_bool_t dbus_connection_register_fallback (DBusConnection *connection,
const char *path,
const DBusObjectPathVTable *vtable,
void *user_data);
dbus_bool_t dbus_connection_unregister_object_path (DBusConnection *connection,
const char *path);
dbus_bool_t dbus_connection_get_object_path_data (DBusConnection *connection,
const char *path,
void **data_p);
dbus_bool_t dbus_connection_list_registered (DBusConnection *connection,
const char *parent_path,
char ***child_entries);
dbus_bool_t dbus_connection_get_unix_fd (DBusConnection *connection,
int *fd);
dbus_bool_t dbus_connection_get_socket (DBusConnection *connection,
int *fd);
char* dbus_get_local_machine_id (void);
/** @} */
DBUS_END_DECLS
#endif /* DBUS_CONNECTION_H */
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