1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_RTL_UUID_H
#define INCLUDED_RTL_UUID_H
#include "sal/config.h"
#include "rtl/string.h"
#include "sal/saldllapi.h"
#include "sal/types.h"
/**
@file
Specification (from draft-leach-uuids-guids-01.txt )
<p>
A UUID is an identifier that is unique across both space and time,
with respect to the space of all UUIDs. To be precise, the UUID
consists of a finite bit space. Thus, collision cannot be avoided in
principle. A UUID can be used for multiple purposes, from tagging objects
with an extremely short lifetime, to reliably identifying very persistent
objects across a network.
<p>
The generation of UUIDs does not require that a registration
authority be contacted for each identifier. Instead, Version 4 UUIDs are
generated from (pseudo unique) sequences of (pseudo) random bits.
*/
#ifdef __cplusplus
extern "C" {
#endif
/** Generates a new Version 4 (random number based) UUID (Universally Unique
IDentifier).
@param pTargetUUID pointer to at least 16 bytes of memory. After the call it contains
the newly generated uuid in network byte order.
@param pPredecessorUUID ignored (was used when this function returned
Version 1 instead of Version 4 UUIDs).
@param bUseEthernetAddress ignored (was used when this function returned
Version 1 instead of Version 4 UUIDs).
*/
SAL_DLLPUBLIC void SAL_CALL rtl_createUuid(
sal_uInt8 *pTargetUUID,
const sal_uInt8 *pPredecessorUUID,
sal_Bool bUseEthernetAddress );
/** Compare two UUID's lexically
<p>
Note: lexical ordering is not temporal ordering!
<p>
Note: For equalnesschecking, a memcmp(pUUID1,pUUID2,16) is more efficient
@return
<ul>
<li>-1 u1 is lexically before u2
<li>0 u1 is equal to u2
<li>1 u1 is lexically after u2
</ul>
*/
SAL_DLLPUBLIC sal_Int32 SAL_CALL rtl_compareUuid(
const sal_uInt8 *pUUID1 , const sal_uInt8 *pUUID2 );
/** Creates named UUIDs.
<p>
The version 3 UUID is meant for generating UUIDs from <em>names</em> that
are drawn from, and unique within, some <em>name space</em>. Some examples
of names (and, implicitly, name spaces) might be DNS names, URLs, ISO
Object IDs (OIDs), reserved words in a programming language, or X.500
Distinguished Names (DNs); thus, the concept of name and name space
should be broadly construed, and not limited to textual names.
<p>
The requirements for such UUIDs are as follows:
<ul>
<li> The UUIDs generated at different times from the same name in the
same namespace MUST be equal
<li> The UUIDs generated from two different names in the same namespace
should be different (with very high probability)
<li> The UUIDs generated from the same name in two different namespaces
should be different with (very high probability)
<li> If two UUIDs that were generated from names are equal, then they
were generated from the same name in the same namespace (with very
high probability).
</ul>
@param pTargetUUID pointer to at least 16 bytes of memory. After the call
it contains the newly generated uuid in network byte order.
@param pNameSpaceUUID The namespace uuid. Below are some predefined ones,
but any arbitrary uuid can be used as namespace.
@param pName the name
*/
SAL_DLLPUBLIC void SAL_CALL rtl_createNamedUuid(
sal_uInt8 *pTargetUUID,
const sal_uInt8 *pNameSpaceUUID,
const rtl_String *pName
);
/*
Predefined Namespaces
(Use them the following way : sal_uInt8 aNsDNS[16]) = RTL_UUID_NAMESPACE_DNS;
*/
/** namespace DNS
<p>
(Use them the following way : sal_uInt8 aNsDNS[16]) = RTL_UUID_NAMESPACE_DNS;
<p>
6ba7b810-9dad-11d1-80b4-00c04fd430c8 */
#define RTL_UUID_NAMESPACE_DNS {\
0x6b,0xa7,0xb8,0x10,\
0x9d,0xad,\
0x11,0xd1,\
0x80, 0xb4, 0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8\
}
/** namespace URL
<p>
6ba7b811-9dad-11d1-80b4-00c04fd430c8 */
#define RTL_UUID_NAMESPACE_URL { \
0x6b, 0xa7, 0xb8, 0x11,\
0x9d, 0xad,\
0x11, 0xd1,\
0x80, 0xb4, 0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8\
}
/** namespace oid
<p>
6ba7b812-9dad-11d1-80b4-00c04fd430c8 */
#define RTL_UUID_NAMESPACE_OID {\
0x6b, 0xa7, 0xb8, 0x12,\
0x9d, 0xad,\
0x11, 0xd1,\
0x80, 0xb4, 0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8\
}
/** namespace X500
<p>
6ba7b814-9dad-11d1-80b4-00c04fd430c8 */
#define RTL_UUID_NAMESPACE_X500 {\
0x6b, 0xa7, 0xb8, 0x14,\
0x9d, 0xad,\
0x11, 0xd1,\
0x80, 0xb4, 0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8\
}
#ifdef __cplusplus
}
#endif
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
