D-Bus 1.15.8
dbus-message.h
1/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2/* dbus-message.h DBusMessage object
3 *
4 * Copyright (C) 2002, 2003, 2005 Red Hat Inc.
5 *
6 * SPDX-License-Identifier: AFL-2.1 OR GPL-2.0-or-later
7 *
8 * Licensed under the Academic Free License version 2.1
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 *
24 */
25#if !defined (DBUS_INSIDE_DBUS_H) && !defined (DBUS_COMPILATION)
26#error "Only <dbus/dbus.h> can be included directly, this file may disappear or change contents."
27#endif
28
29#ifndef DBUS_MESSAGE_H
30#define DBUS_MESSAGE_H
31
32#include <dbus/dbus-macros.h>
33#include <dbus/dbus-types.h>
34#include <dbus/dbus-arch-deps.h>
35#include <dbus/dbus-memory.h>
36#include <dbus/dbus-errors.h>
37#include <stdarg.h>
38
40
46typedef struct DBusMessage DBusMessage;
59
64{
65#if DBUS_SIZEOF_VOID_P > 8
66 void *dummy[16];
67#else
68 void *dummy1;
69 void *dummy2;
71 int dummy4;
72 int dummy5;
73 int dummy6;
74 int dummy7;
75 int dummy8;
76 int dummy9;
77 int dummy10;
78 int dummy11;
79 int pad1;
80 void *pad2;
81 void *pad3;
82#endif
83};
84
89#if DBUS_SIZEOF_VOID_P > 8
90#define DBUS_MESSAGE_ITER_INIT_CLOSED \
91{ \
92 { \
93 NULL, NULL, NULL, NULL, \
94 NULL, NULL, NULL, NULL, \
95 NULL, NULL, NULL, NULL, \
96 NULL, NULL, NULL, NULL \
97 } \
98}
99#else
100#define DBUS_MESSAGE_ITER_INIT_CLOSED \
101{ \
102 NULL, /* dummy1 */ \
103 NULL, /* dummy2 */ \
104 0, /* dummy3 */ \
105 0, /* dummy4 */ \
106 0, /* dummy5 */ \
107 0, /* dummy6 */ \
108 0, /* dummy7 */ \
109 0, /* dummy8 */ \
110 0, /* dummy9 */ \
111 0, /* dummy10 */ \
112 0, /* dummy11 */ \
113 0, /* pad1 */ \
114 NULL, /* pad2 */ \
115 NULL /* pad3 */ \
116}
117#endif
118
119DBUS_EXPORT
120DBusMessage* dbus_message_new (int message_type);
121DBUS_EXPORT
122DBusMessage* dbus_message_new_method_call (const char *bus_name,
123 const char *path,
124 const char *iface,
125 const char *method);
126DBUS_EXPORT
128DBUS_EXPORT
129DBusMessage* dbus_message_new_signal (const char *path,
130 const char *iface,
131 const char *name);
132DBUS_EXPORT
134 const char *error_name,
135 const char *error_message);
136DBUS_EXPORT
138 const char *error_name,
139 const char *error_format,
140 ...) _DBUS_GNUC_PRINTF (3, 4);
141
142DBUS_EXPORT
144
145DBUS_EXPORT
147DBUS_EXPORT
148void dbus_message_unref (DBusMessage *message);
149DBUS_EXPORT
151DBUS_EXPORT
153 const char *object_path);
154DBUS_EXPORT
155const char* dbus_message_get_path (DBusMessage *message);
156DBUS_EXPORT
158 const char *object_path);
159DBUS_EXPORT
161 const char *iface);
162DBUS_EXPORT
163const char* dbus_message_get_interface (DBusMessage *message);
164DBUS_EXPORT
166 const char *iface);
167DBUS_EXPORT
169 const char *member);
170DBUS_EXPORT
171const char* dbus_message_get_member (DBusMessage *message);
172DBUS_EXPORT
174 const char *member);
175DBUS_EXPORT
177 const char *name);
178DBUS_EXPORT
179const char* dbus_message_get_error_name (DBusMessage *message);
180DBUS_EXPORT
182 const char *destination);
183DBUS_EXPORT
184const char* dbus_message_get_destination (DBusMessage *message);
185DBUS_EXPORT
187 const char *sender);
188DBUS_EXPORT
189const char* dbus_message_get_sender (DBusMessage *message);
190DBUS_EXPORT
191const char* dbus_message_get_signature (DBusMessage *message);
192DBUS_EXPORT
194 dbus_bool_t no_reply);
195DBUS_EXPORT
197DBUS_EXPORT
199 const char *iface,
200 const char *method);
201DBUS_EXPORT
203 const char *iface,
204 const char *signal_name);
205DBUS_EXPORT
207 const char *error_name);
208DBUS_EXPORT
210 const char *bus_name);
211DBUS_EXPORT
213 const char *unique_bus_name);
214DBUS_EXPORT
216 const char *signature);
217DBUS_EXPORT
219DBUS_EXPORT
221 dbus_uint32_t serial);
222DBUS_EXPORT
224 dbus_uint32_t reply_serial);
225DBUS_EXPORT
227
228DBUS_EXPORT
230 dbus_bool_t auto_start);
231DBUS_EXPORT
233
234DBUS_EXPORT
236 char ***path);
237
238DBUS_EXPORT
240DBUS_EXPORT
242 const char *object_path);
243
244DBUS_EXPORT
246 int first_arg_type,
247 ...);
248DBUS_EXPORT
250 int first_arg_type,
251 va_list var_args);
252DBUS_EXPORT
254 DBusError *error,
255 int first_arg_type,
256 ...);
257DBUS_EXPORT
259 DBusError *error,
260 int first_arg_type,
261 va_list var_args);
262
263DBUS_EXPORT
265
266DBUS_EXPORT
268DBUS_EXPORT
270 DBusMessageIter *iter);
271DBUS_EXPORT
273DBUS_EXPORT
275DBUS_EXPORT
277DBUS_EXPORT
279DBUS_EXPORT
281DBUS_EXPORT
283 DBusMessageIter *sub);
284DBUS_EXPORT
286 void *value);
287DBUS_EXPORT
289
290#ifndef DBUS_DISABLE_DEPRECATED
291/* This function returns the wire protocol size of the array in bytes,
292 * you do not want to know that probably
293 */
294DBUS_EXPORT
296#endif
297DBUS_EXPORT
299 void *value,
300 int *n_elements);
301
302
303DBUS_EXPORT
305 DBusMessageIter *iter);
306DBUS_EXPORT
308 int type,
309 const void *value);
310DBUS_EXPORT
312 int element_type,
313 const void *value,
314 int n_elements);
315DBUS_EXPORT
317 int type,
318 const char *contained_signature,
319 DBusMessageIter *sub);
320DBUS_EXPORT
322 DBusMessageIter *sub);
323DBUS_EXPORT
325 DBusMessageIter *sub);
326
327DBUS_EXPORT
329 DBusMessageIter *sub);
330
331DBUS_EXPORT
332void dbus_message_lock (DBusMessage *message);
333
334DBUS_EXPORT
336 DBusMessage *message);
337
338
339DBUS_EXPORT
341DBUS_EXPORT
343DBUS_EXPORT
345 dbus_int32_t slot,
346 void *data,
347 DBusFreeFunction free_data_func);
348DBUS_EXPORT
349void* dbus_message_get_data (DBusMessage *message,
350 dbus_int32_t slot);
351
352DBUS_EXPORT
353int dbus_message_type_from_string (const char *type_str);
354DBUS_EXPORT
355const char* dbus_message_type_to_string (int type);
356
357DBUS_EXPORT
359 char **marshalled_data_p,
360 int *len_p);
361DBUS_EXPORT
362DBusMessage* dbus_message_demarshal (const char *str,
363 int len,
364 DBusError *error);
365
366DBUS_EXPORT
367int dbus_message_demarshal_bytes_needed (const char *str,
368 int len);
369
370DBUS_EXPORT
372 dbus_bool_t allow);
373
374DBUS_EXPORT
376 DBusMessage *message);
377
390static inline void
391dbus_clear_message (DBusMessage **pointer_to_message)
392{
393 _dbus_clear_pointer_impl (DBusMessage, pointer_to_message,
395}
396
400
401#endif /* DBUS_MESSAGE_H */
#define DBUS_DEPRECATED
Tells the compiler to warn about a function or type if it's used.
#define DBUS_BEGIN_DECLS
Macro used prior to declaring functions in the D-Bus header files.
#define DBUS_END_DECLS
Macro used after declaring functions in the D-Bus header files.
void(* DBusFreeFunction)(void *memory)
The type of a function which frees a block of memory.
Definition: dbus-memory.h:65
dbus_bool_t dbus_message_has_destination(DBusMessage *message, const char *name)
Checks whether the message was sent to the given name.
dbus_bool_t dbus_message_set_interface(DBusMessage *message, const char *iface)
Sets the interface this message is being sent to (for DBUS_MESSAGE_TYPE_METHOD_CALL) or the interface...
dbus_bool_t dbus_message_has_interface(DBusMessage *message, const char *iface)
Checks if the message has an interface.
void dbus_message_set_no_reply(DBusMessage *message, dbus_bool_t no_reply)
Sets a flag indicating that the message does not want a reply; if this flag is set,...
dbus_bool_t dbus_message_append_args_valist(DBusMessage *message, int first_arg_type, va_list var_args)
Like dbus_message_append_args() but takes a va_list for use by language bindings.
const char * dbus_message_get_sender(DBusMessage *message)
Gets the unique name of the connection which originated this message, or NULL if unknown or inapplica...
void dbus_message_set_auto_start(DBusMessage *message, dbus_bool_t auto_start)
Sets a flag indicating that an owner for the destination name will be automatically started before th...
dbus_bool_t dbus_message_iter_append_basic(DBusMessageIter *iter, int type, const void *value)
Appends a basic-typed value to the message.
const char * dbus_message_get_path(DBusMessage *message)
Gets the object path this message is being sent to (for DBUS_MESSAGE_TYPE_METHOD_CALL) or being emitt...
const char * dbus_message_get_interface(DBusMessage *message)
Gets the interface this message is being sent to (for DBUS_MESSAGE_TYPE_METHOD_CALL) or being emitted...
DBUS_EXPORT void dbus_message_free_data_slot(dbus_int32_t *slot_p)
Deallocates a global ID for message data slots.
DBUS_EXPORT dbus_bool_t dbus_message_set_data(DBusMessage *message, dbus_int32_t slot, void *data, DBusFreeFunction free_data_func)
Stores a pointer on a DBusMessage, along with an optional function to be used for freeing the data wh...
DBusMessage * dbus_message_new_error(DBusMessage *reply_to, const char *error_name, const char *error_message)
Creates a new message that is an error reply to another message.
DBUS_EXPORT const char * dbus_message_type_to_string(int type)
Utility function to convert a D-Bus message type into a machine-readable string (not translated).
dbus_bool_t dbus_message_has_sender(DBusMessage *message, const char *name)
Checks whether the message has the given unique name as its sender.
dbus_uint32_t dbus_message_get_serial(DBusMessage *message)
Returns the serial of a message or 0 if none has been specified.
dbus_bool_t dbus_message_set_member(DBusMessage *message, const char *member)
Sets the interface member being invoked (DBUS_MESSAGE_TYPE_METHOD_CALL) or emitted (DBUS_MESSAGE_TYPE...
DBUS_EXPORT dbus_bool_t dbus_message_marshal(DBusMessage *msg, char **marshalled_data_p, int *len_p)
Turn a DBusMessage into the marshalled form as described in the D-Bus specification.
void dbus_message_iter_get_basic(DBusMessageIter *iter, void *value)
Reads a basic-typed value from the message iterator.
int dbus_message_get_type(DBusMessage *message)
Gets the type of a message.
DBusMessage * dbus_message_copy(const DBusMessage *message)
Creates a new message that is an exact replica of the message specified, except that its refcount is ...
const char * dbus_message_get_error_name(DBusMessage *message)
Gets the error name (DBUS_MESSAGE_TYPE_ERROR only) or NULL if none.
dbus_bool_t dbus_message_iter_next(DBusMessageIter *iter)
Moves the iterator to the next field, if any.
dbus_bool_t dbus_message_append_args(DBusMessage *message, int first_arg_type,...)
Appends fields to a message given a variable argument list.
int dbus_message_iter_get_arg_type(DBusMessageIter *iter)
Returns the argument type of the argument that the message iterator points to.
dbus_bool_t dbus_message_get_no_reply(DBusMessage *message)
Returns TRUE if the message does not expect a reply.
DBUS_EXPORT int dbus_message_demarshal_bytes_needed(const char *str, int len)
Returns the number of bytes required to be in the buffer to demarshal a D-Bus message.
DBusMessage * dbus_message_new_signal(const char *path, const char *iface, const char *name)
Constructs a new message representing a signal emission.
dbus_bool_t dbus_message_iter_append_fixed_array(DBusMessageIter *iter, int element_type, const void *value, int n_elements)
Appends a block of fixed-length values to an array.
void dbus_message_iter_abandon_container(DBusMessageIter *iter, DBusMessageIter *sub)
Abandons creation of a contained-typed value and frees resources created by dbus_message_iter_open_co...
DBusMessage * dbus_message_new_error_printf(DBusMessage *reply_to, const char *error_name, const char *error_format,...)
Creates a new message that is an error reply to another message, allowing you to use printf formattin...
dbus_bool_t dbus_message_is_error(DBusMessage *message, const char *error_name)
Checks whether the message is an error reply with the given error name.
dbus_bool_t dbus_message_contains_unix_fds(DBusMessage *message)
Checks whether a message contains unix fds.
void dbus_message_iter_recurse(DBusMessageIter *iter, DBusMessageIter *sub)
Recurses into a container value when reading values from a message, initializing a sub-iterator to us...
DBusMessage * dbus_message_ref(DBusMessage *message)
Increments the reference count of a DBusMessage.
dbus_bool_t dbus_message_get_auto_start(DBusMessage *message)
Returns TRUE if the message will cause an owner for destination name to be auto-started.
int dbus_message_iter_get_element_type(DBusMessageIter *iter)
Returns the element type of the array that the message iterator points to.
dbus_bool_t dbus_message_set_error_name(DBusMessage *message, const char *error_name)
Sets the name of the error (DBUS_MESSAGE_TYPE_ERROR).
dbus_bool_t dbus_message_has_signature(DBusMessage *message, const char *signature)
Checks whether the message has the given signature; see dbus_message_get_signature() for more details...
dbus_bool_t dbus_message_iter_open_container(DBusMessageIter *iter, int type, const char *contained_signature, DBusMessageIter *sub)
Appends a container-typed value to the message.
dbus_uint32_t dbus_message_get_reply_serial(DBusMessage *message)
Returns the serial that the message is a reply to or 0 if none.
DBusMessage * dbus_message_new_method_return(DBusMessage *method_call)
Constructs a message that is a reply to a method call.
DBusMessage * dbus_message_new_method_call(const char *destination, const char *path, const char *iface, const char *method)
Constructs a new message to invoke a method on a remote object.
dbus_bool_t dbus_message_iter_init(DBusMessage *message, DBusMessageIter *iter)
Initializes a DBusMessageIter for reading the arguments of the message passed in.
dbus_bool_t dbus_message_set_sender(DBusMessage *message, const char *sender)
Sets the message sender.
void dbus_message_iter_abandon_container_if_open(DBusMessageIter *iter, DBusMessageIter *sub)
Abandons creation of a contained-typed value and frees resources created by dbus_message_iter_open_co...
DBUS_EXPORT void dbus_message_set_serial(DBusMessage *message, dbus_uint32_t serial)
Sets the serial number of a message.
Definition: dbus-message.c:301
const char * dbus_message_get_destination(DBusMessage *message)
Gets the destination of a message or NULL if there is none set.
dbus_bool_t dbus_message_set_path(DBusMessage *message, const char *object_path)
Sets the object path this message is being sent to (for DBUS_MESSAGE_TYPE_METHOD_CALL) or the one a s...
dbus_bool_t dbus_message_iter_has_next(DBusMessageIter *iter)
Checks if an iterator has any more fields.
dbus_bool_t dbus_message_get_args_valist(DBusMessage *message, DBusError *error, int first_arg_type, va_list var_args)
Like dbus_message_get_args but takes a va_list for use by language bindings.
char * dbus_message_iter_get_signature(DBusMessageIter *iter)
Returns the current signature of a message iterator.
void dbus_message_unref(DBusMessage *message)
Decrements the reference count of a DBusMessage, freeing the message if the count reaches 0.
int dbus_message_iter_get_array_len(DBusMessageIter *iter)
Returns the number of bytes in the array as marshaled in the wire protocol.
DBusMessage * dbus_message_new(int message_type)
Constructs a new message of the given message type.
dbus_bool_t dbus_set_error_from_message(DBusError *error, DBusMessage *message)
Sets a DBusError based on the contents of the given message.
DBUS_EXPORT int dbus_message_type_from_string(const char *type_str)
Utility function to convert a machine-readable (not translated) string into a D-Bus message type.
int dbus_message_iter_get_element_count(DBusMessageIter *iter)
Returns the number of elements in the array-typed value pointed to by the iterator.
dbus_bool_t dbus_message_set_destination(DBusMessage *message, const char *destination)
Sets the message's destination.
dbus_bool_t dbus_message_has_path(DBusMessage *message, const char *path)
Checks if the message has a particular object path.
DBUS_EXPORT void dbus_message_lock(DBusMessage *message)
Locks a message.
Definition: dbus-message.c:431
dbus_bool_t dbus_message_has_member(DBusMessage *message, const char *member)
Checks if the message has an interface member.
dbus_bool_t dbus_message_get_args(DBusMessage *message, DBusError *error, int first_arg_type,...)
Gets arguments from a message given a variable argument list.
dbus_bool_t dbus_message_is_method_call(DBusMessage *message, const char *iface, const char *method)
Checks whether the message is a method call with the given interface and member fields.
void dbus_message_iter_get_fixed_array(DBusMessageIter *iter, void *value, int *n_elements)
Reads a block of fixed-length values from the message iterator.
DBUS_EXPORT void dbus_message_set_allow_interactive_authorization(DBusMessage *message, dbus_bool_t allow)
Sets a flag indicating that the caller of the method is prepared to wait for interactive authorizatio...
DBUS_EXPORT dbus_bool_t dbus_message_get_allow_interactive_authorization(DBusMessage *message)
Returns whether the flag controlled by dbus_message_set_allow_interactive_authorization() has been se...
dbus_bool_t dbus_message_set_reply_serial(DBusMessage *message, dbus_uint32_t reply_serial)
Sets the reply serial of a message (the serial of the message this is a reply to).
dbus_bool_t dbus_message_is_signal(DBusMessage *message, const char *iface, const char *signal_name)
Checks whether the message is a signal with the given interface and member fields.
const char * dbus_message_get_signature(DBusMessage *message)
Gets the type signature of the message, i.e.
dbus_bool_t dbus_message_set_container_instance(DBusMessage *message, const char *object_path)
Sets the container instance this message was sent from.
dbus_bool_t dbus_message_iter_close_container(DBusMessageIter *iter, DBusMessageIter *sub)
Closes a container-typed value appended to the message; may write out more information to the message...
DBUS_EXPORT DBusMessage * dbus_message_demarshal(const char *str, int len, DBusError *error)
Demarshal a D-Bus message from the format described in the D-Bus specification.
dbus_bool_t dbus_message_get_path_decomposed(DBusMessage *message, char ***path)
Gets the object path this message is being sent to (for DBUS_MESSAGE_TYPE_METHOD_CALL) or being emitt...
DBUS_EXPORT void dbus_message_iter_init_closed(DBusMessageIter *iter)
Initialize iter as if with DBUS_MESSAGE_ITER_INIT_CLOSED.
Definition: dbus-message.c:755
const char * dbus_message_get_member(DBusMessage *message)
Gets the interface member being invoked (DBUS_MESSAGE_TYPE_METHOD_CALL) or emitted (DBUS_MESSAGE_TYPE...
void dbus_message_iter_init_append(DBusMessage *message, DBusMessageIter *iter)
Initializes a DBusMessageIter for appending arguments to the end of a message.
DBUS_EXPORT void * dbus_message_get_data(DBusMessage *message, dbus_int32_t slot)
Retrieves data previously set with dbus_message_set_data().
DBUS_EXPORT dbus_bool_t dbus_message_allocate_data_slot(dbus_int32_t *slot_p)
Allocates an integer ID to be used for storing application-specific data on any DBusMessage.
const char * dbus_message_get_container_instance(DBusMessage *message)
Gets the container instance this message was sent from, or NULL if none.
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE.
Definition: dbus-types.h:37
int dbus_int32_t
A 32-bit signed integer on all platforms.
unsigned int dbus_uint32_t
A 32-bit unsigned integer on all platforms.
Object representing an exception.
Definition: dbus-errors.h:51
DBusMessageIter struct; contains no public fields.
Definition: dbus-message.h:64
int dummy8
Don't use this.
Definition: dbus-message.h:75
int dummy11
Don't use this.
Definition: dbus-message.h:78
int dummy4
Don't use this.
Definition: dbus-message.h:71
int pad1
Don't use this.
Definition: dbus-message.h:79
int dummy5
Don't use this.
Definition: dbus-message.h:72
void * pad2
Don't use this.
Definition: dbus-message.h:80
void * dummy1
Don't use this.
Definition: dbus-message.h:68
void * dummy2
Don't use this.
Definition: dbus-message.h:69
int dummy6
Don't use this.
Definition: dbus-message.h:73
dbus_uint32_t dummy3
Don't use this.
Definition: dbus-message.h:70
int dummy7
Don't use this.
Definition: dbus-message.h:74
int dummy10
Don't use this.
Definition: dbus-message.h:77
int dummy9
Don't use this.
Definition: dbus-message.h:76
void * pad3
Don't use this.
Definition: dbus-message.h:81
Internals of DBusMessage.