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Diffstat (limited to 'sal/inc/rtl/uuid.h')
| -rw-r--r-- | sal/inc/rtl/uuid.h | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/sal/inc/rtl/uuid.h b/sal/inc/rtl/uuid.h new file mode 100644 index 000000000000..3ff5bb2c1232 --- /dev/null +++ b/sal/inc/rtl/uuid.h @@ -0,0 +1,209 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org 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 Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ +#ifndef _RTL_UUID_H_ +#define _RTL_UUID_H_ + + +#include <sal/types.h> +#include <rtl/string.h> + +/** + @HTML + @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). + */ +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_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 arbitray uuid can be used as namespace. + + @param pName the name + */ +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; + */ +/** namesapce 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\ + } + + +/* + This macro must have a value below the system time resolution of the + system. The uuid routines use this value as an upper limit for adding ticks to the + the predecessor time value if system times are equal. + */ +#ifdef SAL_W32 +#define UUID_SYSTEM_TIME_RESOLUTION_100NS_TICKS 1000 +#elif defined SAL_OS2 // YD we use posix functions for time +#define UUID_SYSTEM_TIME_RESOLUTION_100NS_TICKS 10 +#elif LINUX +#define UUID_SYSTEM_TIME_RESOLUTION_100NS_TICKS 10 +#elif NETBSD +#define UUID_SYSTEM_TIME_RESOLUTION_100NS_TICKS 10 +#elif FREEBSD +#define UUID_SYSTEM_TIME_RESOLUTION_100NS_TICKS 10 +#elif SOLARIS +#define UUID_SYSTEM_TIME_RESOLUTION_100NS_TICKS 10 +#elif MACOSX +#define UUID_SYSTEM_TIME_RESOLUTION_100NS_TICKS 100000 +#else +#error "System time resolution must be calculated!" +#endif + +#ifdef __cplusplus +} +#endif + +#endif |