mirror of
https://gitlab.freedesktop.org/dbus/dbus.git
synced 2026-01-12 02:10:24 +01:00
26d5d97d5b
If we cast a user-supplied pointer to DBusBasicValue *, that's like promising that the pointer is to an object at least as strictly aligned as a DBusBasicValue. In practice, it often isn't: for example, when we marshal a dbus_uint32_t, a pointer to it is only guaranteed to be 32-bit-aligned, whereas DBusBasicValue typically requires 64-bit alignment. Signed-off-by: Simon McVittie <smcv@collabora.com>
231 lines
12 KiB
C
231 lines
12 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
|
|
/* dbus-marshal-basic.h Marshalling routines for basic (primitive) types
|
|
*
|
|
* Copyright (C) 2002 CodeFactory AB
|
|
* Copyright (C) 2004, 2005 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*/
|
|
|
|
#ifndef DBUS_MARSHAL_BASIC_H
|
|
#define DBUS_MARSHAL_BASIC_H
|
|
|
|
#ifdef HAVE_BYTESWAP_H
|
|
#include <byteswap.h>
|
|
#endif
|
|
|
|
#include <dbus/dbus-protocol.h>
|
|
#include <dbus/dbus-types.h>
|
|
#include <dbus/dbus-arch-deps.h>
|
|
#include <dbus/dbus-string.h>
|
|
|
|
#ifdef WORDS_BIGENDIAN
|
|
#define DBUS_COMPILER_BYTE_ORDER DBUS_BIG_ENDIAN
|
|
#else
|
|
#define DBUS_COMPILER_BYTE_ORDER DBUS_LITTLE_ENDIAN
|
|
#endif
|
|
|
|
#ifdef HAVE_BYTESWAP_H
|
|
#define DBUS_UINT16_SWAP_LE_BE_CONSTANT(val) bswap_16(val)
|
|
#define DBUS_UINT32_SWAP_LE_BE_CONSTANT(val) bswap_32(val)
|
|
#else /* HAVE_BYTESWAP_H */
|
|
|
|
#define DBUS_UINT16_SWAP_LE_BE_CONSTANT(val) ((dbus_uint16_t) ( \
|
|
(dbus_uint16_t) ((dbus_uint16_t) (val) >> 8) | \
|
|
(dbus_uint16_t) ((dbus_uint16_t) (val) << 8)))
|
|
|
|
#define DBUS_UINT32_SWAP_LE_BE_CONSTANT(val) ((dbus_uint32_t) ( \
|
|
(((dbus_uint32_t) (val) & (dbus_uint32_t) 0x000000ffU) << 24) | \
|
|
(((dbus_uint32_t) (val) & (dbus_uint32_t) 0x0000ff00U) << 8) | \
|
|
(((dbus_uint32_t) (val) & (dbus_uint32_t) 0x00ff0000U) >> 8) | \
|
|
(((dbus_uint32_t) (val) & (dbus_uint32_t) 0xff000000U) >> 24)))
|
|
|
|
#endif /* HAVE_BYTESWAP_H */
|
|
|
|
#ifdef HAVE_BYTESWAP_H
|
|
#define DBUS_UINT64_SWAP_LE_BE_CONSTANT(val) bswap_64(val)
|
|
#else /* HAVE_BYTESWAP_H */
|
|
|
|
#define DBUS_UINT64_SWAP_LE_BE_CONSTANT(val) ((dbus_uint64_t) ( \
|
|
(((dbus_uint64_t) (val) & \
|
|
(dbus_uint64_t) DBUS_UINT64_CONSTANT (0x00000000000000ff)) << 56) | \
|
|
(((dbus_uint64_t) (val) & \
|
|
(dbus_uint64_t) DBUS_UINT64_CONSTANT (0x000000000000ff00)) << 40) | \
|
|
(((dbus_uint64_t) (val) & \
|
|
(dbus_uint64_t) DBUS_UINT64_CONSTANT (0x0000000000ff0000)) << 24) | \
|
|
(((dbus_uint64_t) (val) & \
|
|
(dbus_uint64_t) DBUS_UINT64_CONSTANT (0x00000000ff000000)) << 8) | \
|
|
(((dbus_uint64_t) (val) & \
|
|
(dbus_uint64_t) DBUS_UINT64_CONSTANT (0x000000ff00000000)) >> 8) | \
|
|
(((dbus_uint64_t) (val) & \
|
|
(dbus_uint64_t) DBUS_UINT64_CONSTANT (0x0000ff0000000000)) >> 24) | \
|
|
(((dbus_uint64_t) (val) & \
|
|
(dbus_uint64_t) DBUS_UINT64_CONSTANT (0x00ff000000000000)) >> 40) | \
|
|
(((dbus_uint64_t) (val) & \
|
|
(dbus_uint64_t) DBUS_UINT64_CONSTANT (0xff00000000000000)) >> 56)))
|
|
|
|
#endif /* HAVE_BYTESWAP_H */
|
|
|
|
#define DBUS_UINT16_SWAP_LE_BE(val) (DBUS_UINT16_SWAP_LE_BE_CONSTANT (val))
|
|
#define DBUS_INT16_SWAP_LE_BE(val) ((dbus_int16_t)DBUS_UINT16_SWAP_LE_BE_CONSTANT (val))
|
|
|
|
#define DBUS_UINT32_SWAP_LE_BE(val) (DBUS_UINT32_SWAP_LE_BE_CONSTANT (val))
|
|
#define DBUS_INT32_SWAP_LE_BE(val) ((dbus_int32_t)DBUS_UINT32_SWAP_LE_BE_CONSTANT (val))
|
|
|
|
#define DBUS_UINT64_SWAP_LE_BE(val) (DBUS_UINT64_SWAP_LE_BE_CONSTANT (val))
|
|
#define DBUS_INT64_SWAP_LE_BE(val) ((dbus_int64_t)DBUS_UINT64_SWAP_LE_BE_CONSTANT (val))
|
|
|
|
#ifdef WORDS_BIGENDIAN
|
|
|
|
# define DBUS_INT16_TO_BE(val) ((dbus_int16_t) (val))
|
|
# define DBUS_UINT16_TO_BE(val) ((dbus_uint16_t) (val))
|
|
# define DBUS_INT16_TO_LE(val) (DBUS_INT16_SWAP_LE_BE (val))
|
|
# define DBUS_UINT16_TO_LE(val) (DBUS_UINT16_SWAP_LE_BE (val))
|
|
# define DBUS_INT32_TO_BE(val) ((dbus_int32_t) (val))
|
|
# define DBUS_UINT32_TO_BE(val) ((dbus_uint32_t) (val))
|
|
# define DBUS_INT32_TO_LE(val) (DBUS_INT32_SWAP_LE_BE (val))
|
|
# define DBUS_UINT32_TO_LE(val) (DBUS_UINT32_SWAP_LE_BE (val))
|
|
# define DBUS_INT64_TO_BE(val) ((dbus_int64_t) (val))
|
|
# define DBUS_UINT64_TO_BE(val) ((dbus_uint64_t) (val))
|
|
# define DBUS_INT64_TO_LE(val) (DBUS_INT64_SWAP_LE_BE (val))
|
|
# define DBUS_UINT64_TO_LE(val) (DBUS_UINT64_SWAP_LE_BE (val))
|
|
|
|
#else /* WORDS_BIGENDIAN */
|
|
|
|
# define DBUS_INT16_TO_LE(val) ((dbus_int16_t) (val))
|
|
# define DBUS_UINT16_TO_LE(val) ((dbus_uint16_t) (val))
|
|
# define DBUS_INT16_TO_BE(val) ((dbus_int16_t) DBUS_UINT16_SWAP_LE_BE (val))
|
|
# define DBUS_UINT16_TO_BE(val) (DBUS_UINT16_SWAP_LE_BE (val))
|
|
# define DBUS_INT32_TO_LE(val) ((dbus_int32_t) (val))
|
|
# define DBUS_UINT32_TO_LE(val) ((dbus_uint32_t) (val))
|
|
# define DBUS_INT32_TO_BE(val) ((dbus_int32_t) DBUS_UINT32_SWAP_LE_BE (val))
|
|
# define DBUS_UINT32_TO_BE(val) (DBUS_UINT32_SWAP_LE_BE (val))
|
|
# define DBUS_INT64_TO_LE(val) ((dbus_int64_t) (val))
|
|
# define DBUS_UINT64_TO_LE(val) ((dbus_uint64_t) (val))
|
|
# define DBUS_INT64_TO_BE(val) ((dbus_int64_t) DBUS_UINT64_SWAP_LE_BE (val))
|
|
# define DBUS_UINT64_TO_BE(val) (DBUS_UINT64_SWAP_LE_BE (val))
|
|
#endif
|
|
|
|
/* The transformation is symmetric, so the FROM just maps to the TO. */
|
|
#define DBUS_INT16_FROM_LE(val) (DBUS_INT16_TO_LE (val))
|
|
#define DBUS_UINT16_FROM_LE(val) (DBUS_UINT16_TO_LE (val))
|
|
#define DBUS_INT16_FROM_BE(val) (DBUS_INT16_TO_BE (val))
|
|
#define DBUS_UINT16_FROM_BE(val) (DBUS_UINT16_TO_BE (val))
|
|
#define DBUS_INT32_FROM_LE(val) (DBUS_INT32_TO_LE (val))
|
|
#define DBUS_UINT32_FROM_LE(val) (DBUS_UINT32_TO_LE (val))
|
|
#define DBUS_INT32_FROM_BE(val) (DBUS_INT32_TO_BE (val))
|
|
#define DBUS_UINT32_FROM_BE(val) (DBUS_UINT32_TO_BE (val))
|
|
#define DBUS_INT64_FROM_LE(val) (DBUS_INT64_TO_LE (val))
|
|
#define DBUS_UINT64_FROM_LE(val) (DBUS_UINT64_TO_LE (val))
|
|
#define DBUS_INT64_FROM_BE(val) (DBUS_INT64_TO_BE (val))
|
|
#define DBUS_UINT64_FROM_BE(val) (DBUS_UINT64_TO_BE (val))
|
|
|
|
#ifdef DBUS_DISABLE_ASSERT
|
|
#define _dbus_unpack_uint16(byte_order, data) \
|
|
(((byte_order) == DBUS_LITTLE_ENDIAN) ? \
|
|
DBUS_UINT16_FROM_LE (*(dbus_uint16_t*)(data)) : \
|
|
DBUS_UINT16_FROM_BE (*(dbus_uint16_t*)(data)))
|
|
|
|
#define _dbus_unpack_uint32(byte_order, data) \
|
|
(((byte_order) == DBUS_LITTLE_ENDIAN) ? \
|
|
DBUS_UINT32_FROM_LE (*(dbus_uint32_t*)(data)) : \
|
|
DBUS_UINT32_FROM_BE (*(dbus_uint32_t*)(data)))
|
|
#endif
|
|
|
|
#ifndef _dbus_unpack_uint16
|
|
DBUS_PRIVATE_EXPORT
|
|
dbus_uint16_t _dbus_unpack_uint16 (int byte_order,
|
|
const unsigned char *data);
|
|
#endif
|
|
|
|
void _dbus_pack_uint32 (dbus_uint32_t value,
|
|
int byte_order,
|
|
unsigned char *data);
|
|
#ifndef _dbus_unpack_uint32
|
|
DBUS_PRIVATE_EXPORT
|
|
dbus_uint32_t _dbus_unpack_uint32 (int byte_order,
|
|
const unsigned char *data);
|
|
#endif
|
|
|
|
dbus_bool_t _dbus_marshal_set_basic (DBusString *str,
|
|
int pos,
|
|
int type,
|
|
const void *value,
|
|
int byte_order,
|
|
int *old_end_pos,
|
|
int *new_end_pos);
|
|
dbus_bool_t _dbus_marshal_write_basic (DBusString *str,
|
|
int insert_at,
|
|
int type,
|
|
const void *value,
|
|
int byte_order,
|
|
int *pos_after);
|
|
dbus_bool_t _dbus_marshal_write_fixed_multi (DBusString *str,
|
|
int insert_at,
|
|
int element_type,
|
|
const void *value,
|
|
int n_elements,
|
|
int byte_order,
|
|
int *pos_after);
|
|
void _dbus_marshal_read_basic (const DBusString *str,
|
|
int pos,
|
|
int type,
|
|
void *value,
|
|
int byte_order,
|
|
int *new_pos);
|
|
void _dbus_marshal_read_fixed_multi (const DBusString *str,
|
|
int pos,
|
|
int element_type,
|
|
const void **value,
|
|
int n_elements,
|
|
int byte_order,
|
|
int *new_pos);
|
|
void _dbus_marshal_skip_basic (const DBusString *str,
|
|
int type,
|
|
int byte_order,
|
|
int *pos);
|
|
void _dbus_marshal_skip_array (const DBusString *str,
|
|
int element_type,
|
|
int byte_order,
|
|
int *pos);
|
|
DBUS_PRIVATE_EXPORT
|
|
void _dbus_marshal_set_uint32 (DBusString *str,
|
|
int pos,
|
|
dbus_uint32_t value,
|
|
int byte_order);
|
|
DBUS_PRIVATE_EXPORT
|
|
dbus_uint32_t _dbus_marshal_read_uint32 (const DBusString *str,
|
|
int pos,
|
|
int byte_order,
|
|
int *new_pos);
|
|
int _dbus_type_get_alignment (int typecode);
|
|
DBUS_PRIVATE_EXPORT
|
|
const char* _dbus_type_to_string (int typecode);
|
|
|
|
DBUS_PRIVATE_EXPORT
|
|
int _dbus_first_type_in_signature (const DBusString *str,
|
|
int pos);
|
|
|
|
int _dbus_first_type_in_signature_c_str (const char *str,
|
|
int pos);
|
|
|
|
void _dbus_swap_array (unsigned char *data,
|
|
int n_elements,
|
|
int alignment);
|
|
|
|
#endif /* DBUS_MARSHAL_BASIC_H */
|