D-Bus: dbus-marshal-header.h Source File

D-Bus 1.12.20

dbus-marshal-header.h
1 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2 /* dbus-marshal-header.h Managing marshaling/demarshaling of message headers
3 *
4 * Copyright (C) 2005 Red Hat, Inc.
5 *
6 * Licensed under the Academic Free License version 2.1
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 *
22 */
23
24 #ifndef DBUS_MARSHAL_HEADER_H
25 #define DBUS_MARSHAL_HEADER_H
26
27 #include <dbus/dbus-marshal-basic.h>
28 #include <dbus/dbus-marshal-validate.h>
29
30 typedef struct DBusHeader DBusHeader;
31 typedef struct DBusHeaderField DBusHeaderField;
32
33 #define _DBUS_HEADER_FIELD_VALUE_UNKNOWN -1
34 #define _DBUS_HEADER_FIELD_VALUE_NONEXISTENT -2
35
39 struct DBusHeaderField
40 {
41 int value_pos;
42 };
43
47 struct DBusHeader
48 {
49 DBusString data;
54 DBusHeaderField fields[DBUS_HEADER_FIELD_LAST + 1];
58 dbus_uint32_t padding : 3;
59 dbus_uint32_t byte_order : 8;
60 };
61
62 dbus_bool_t _dbus_header_init (DBusHeader *header);
63 void _dbus_header_free (DBusHeader *header);
64 void _dbus_header_reinit (DBusHeader *header);
65 dbus_bool_t _dbus_header_create (DBusHeader *header,
66 int byte_order,
67 int type,
68 const char *destination,
69 const char *path,
70 const char *interface,
71 const char *member,
72 const char *error_name);
73 dbus_bool_t _dbus_header_copy (const DBusHeader *header,
74 DBusHeader *dest);
75 int _dbus_header_get_message_type (DBusHeader *header);
76 void _dbus_header_set_serial (DBusHeader *header,
77 dbus_uint32_t serial);
78 dbus_uint32_t _dbus_header_get_serial (DBusHeader *header);
79 void _dbus_header_update_lengths (DBusHeader *header,
80 int body_len);
81 DBUS_PRIVATE_EXPORT
82 dbus_bool_t _dbus_header_set_field_basic (DBusHeader *header,
83 int field,
84 int type,
85 const void *value);
86 dbus_bool_t _dbus_header_get_field_basic (DBusHeader *header,
87 int field,
88 int type,
89 void *value);
90 DBUS_PRIVATE_EXPORT
91 dbus_bool_t _dbus_header_get_field_raw (DBusHeader *header,
92 int field,
93 const DBusString **str,
94 int *pos);
95 DBUS_PRIVATE_EXPORT
96 dbus_bool_t _dbus_header_delete_field (DBusHeader *header,
97 int field);
98 void _dbus_header_toggle_flag (DBusHeader *header,
99 dbus_uint32_t flag,
100 dbus_bool_t value);
101 dbus_bool_t _dbus_header_get_flag (DBusHeader *header,
102 dbus_uint32_t flag);
103 dbus_bool_t _dbus_header_ensure_signature (DBusHeader *header,
104 DBusString **type_str,
105 int *type_pos);
106 dbus_bool_t _dbus_header_have_message_untrusted (int max_message_length,
107 DBusValidity *validity,
108 int *byte_order,
109 int *fields_array_len,
110 int *header_len,
111 int *body_len,
112 const DBusString *str,
113 int start,
114 int len);
115 dbus_bool_t _dbus_header_load (DBusHeader *header,
116 DBusValidationMode mode,
117 DBusValidity *validity,
118 int byte_order,
119 int fields_array_len,
120 int header_len,
121 int body_len,
122 const DBusString *str,
123 int start,
124 int len);
125 void _dbus_header_byteswap (DBusHeader *header,
126 int new_order);
127 DBUS_PRIVATE_EXPORT
128 char _dbus_header_get_byte_order (const DBusHeader *header);
129
130
131
132 #endif /* DBUS_MARSHAL_HEADER_H */
DBusHeader::data
DBusString data
Header network data, stored separately from body so we can independently realloc it.
Definition: dbus-marshal-header.h:49
DBusValidationMode
DBusValidationMode
This is used rather than a bool for high visibility.
Definition: dbus-marshal-validate.h:37
DBusHeader::byte_order
dbus_uint32_t byte_order
byte order of header
Definition: dbus-marshal-header.h:59
_dbus_header_update_lengths
void _dbus_header_update_lengths(DBusHeader *header, int body_len)
Fills in the correct body length.
Definition: dbus-marshal-header.c:1196
DBusHeader::padding
dbus_uint32_t padding
bytes of alignment in header
Definition: dbus-marshal-header.h:58
DBUS_HEADER_FIELD_LAST
#define DBUS_HEADER_FIELD_LAST
Value of the highest-numbered header field code, can be used to determine the size of an array indexe...
Definition: dbus-protocol.h:311
_dbus_header_set_serial
void _dbus_header_set_serial(DBusHeader *header, dbus_uint32_t serial)
Sets the serial number of a header.
Definition: dbus-marshal-header.c:404
_dbus_header_delete_field
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_header_delete_field(DBusHeader *header, int field)
Deletes a field, if it exists.
Definition: dbus-marshal-header.c:1416
_dbus_header_get_serial
dbus_uint32_t _dbus_header_get_serial(DBusHeader *header)
See dbus_message_get_serial()
Definition: dbus-marshal-header.c:427
DBusHeader
Message header data and some cached details of it.
Definition: dbus-marshal-header.h:48
_dbus_header_load
dbus_bool_t _dbus_header_load(DBusHeader *header, DBusValidationMode mode, DBusValidity *validity, int byte_order, int fields_array_len, int header_len, int body_len, const DBusString *str, int start, int len)
Creates a message header from potentially-untrusted data.
Definition: dbus-marshal-header.c:970
_dbus_header_get_byte_order
DBUS_PRIVATE_EXPORT char _dbus_header_get_byte_order(const DBusHeader *header)
Returns the header's byte order.
Definition: dbus-marshal-header.c:174
_dbus_header_get_message_type
int _dbus_header_get_message_type(DBusHeader *header)
Gets the type of the message.
Definition: dbus-marshal-header.c:386
DBusHeaderField::value_pos
int value_pos
Position of field value, or -1/-2.
Definition: dbus-marshal-header.h:41
DBusHeaderField
Cached information about a header field in the message.
Definition: dbus-marshal-header.h:40
_dbus_header_toggle_flag
void _dbus_header_toggle_flag(DBusHeader *header, dbus_uint32_t flag, dbus_bool_t value)
Toggles a message flag bit, turning on the bit if value = TRUE and flipping it off if value = FALSE.
Definition: dbus-marshal-header.c:1457
DBusString
Definition: dbus-string.h:43
dbus_uint32_t
unsigned int dbus_uint32_t
Definition: dbus-arch-deps.h:43
_dbus_header_get_flag
dbus_bool_t _dbus_header_get_flag(DBusHeader *header, dbus_uint32_t flag)
Gets a message flag bit, returning TRUE if the bit is set.
Definition: dbus-marshal-header.c:1479
_dbus_header_copy
dbus_bool_t _dbus_header_copy(const DBusHeader *header, DBusHeader *dest)
Initializes dest with a copy of the given header.
Definition: dbus-marshal-header.c:490
_dbus_header_have_message_untrusted
dbus_bool_t _dbus_header_have_message_untrusted(int max_message_length, DBusValidity *validity, int *byte_order, int *fields_array_len, int *header_len, int *body_len, const DBusString *str, int start, int len)
Given data long enough to contain the length of the message body and the fields array,...
Definition: dbus-marshal-header.c:673
_dbus_header_get_field_raw
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_header_get_field_raw(DBusHeader *header, int field, const DBusString **str, int *pos)
Gets the raw marshaled data for a field.
Definition: dbus-marshal-header.c:1392
_dbus_header_free
void _dbus_header_free(DBusHeader *header)
Frees a header.
Definition: dbus-marshal-header.c:476
_dbus_header_get_field_basic
dbus_bool_t _dbus_header_get_field_basic(DBusHeader *header, int field, int type, void *value)
Gets the value of a field with basic type.
Definition: dbus-marshal-header.c:1351
_dbus_header_byteswap
void _dbus_header_byteswap(DBusHeader *header, int new_order)
Swaps the header into the given order if required.
Definition: dbus-marshal-header.c:1496
DBusHeader::fields
DBusHeaderField fields[DBUS_HEADER_FIELD_LAST+1]
Track the location of each field in header.
Definition: dbus-marshal-header.h:54
_dbus_header_reinit
void _dbus_header_reinit(DBusHeader *header)
Re-initializes a header that was previously initialized and never freed.
Definition: dbus-marshal-header.c:443
_dbus_header_create
dbus_bool_t _dbus_header_create(DBusHeader *header, int byte_order, int type, const char *destination, const char *path, const char *interface, const char *member, const char *error_name)
Fills in the primary fields of the header, so the header is ready for use.
Definition: dbus-marshal-header.c:528
_dbus_header_set_field_basic
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_header_set_field_basic(DBusHeader *header, int field, int type, const void *value)
Sets the value of a field with basic type.
Definition: dbus-marshal-header.c:1273
_dbus_header_init
dbus_bool_t _dbus_header_init(DBusHeader *header)
Initializes a header, but doesn't prepare it for use; to make the header valid, you have to call _dbu...
Definition: dbus-marshal-header.c:460
dbus_bool_t
dbus_uint32_t dbus_bool_t
Definition: dbus-types.h:35
DBusValidity
DBusValidity
This is primarily used in unit testing, so we can verify that each invalid message is invalid for the...
Definition: dbus-marshal-validate.h:50