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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* 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.
*
************************************************************************/
#include <string.h>
#include <stdlib.h>
#include <osl/mutex.hxx>
#include <rtl/random.h>
#include <rtl/uuid.h>
#include <rtl/digest.h>
#define SWAP_INT32_TO_NETWORK(x)\
{ sal_uInt32 y = x;\
sal_uInt8 *p = (sal_uInt8 * )&(x); \
p[0] = (sal_uInt8) ( ( y >> 24 ) & 0xff );\
p[1] = (sal_uInt8) ( ( y >> 16 ) & 0xff );\
p[2] = (sal_uInt8) ( ( y >> 8 ) & 0xff );\
p[3] = (sal_uInt8) ( ( y ) & 0xff);\
}
#define SWAP_INT16_TO_NETWORK(x)\
{ sal_uInt16 y = x;\
sal_uInt8 *p = (sal_uInt8 * )&(x); \
p[0] = (sal_uInt8) ( ( y >> 8 ) & 0xff );\
p[1] = (sal_uInt8) ( ( y ) & 0xff);\
}
#define SWAP_NETWORK_TO_INT16(x)\
{ sal_uInt16 y = x;\
sal_uInt8 *p = (sal_uInt8 * )&(y);\
x = ( ( ((sal_uInt16)p[0]) & 0xff) << 8 ) |\
( ( (sal_uInt16)p[1]) & 0xff);\
}
#define SWAP_NETWORK_TO_INT32(x)\
{ sal_uInt32 y = x;\
sal_uInt8 *p = (sal_uInt8 * )&(y); \
x = ( ( ((sal_uInt32)p[0]) & 0xff) << 24 ) |\
( ( ((sal_uInt32)p[1]) & 0xff) << 16 ) |\
( ( ((sal_uInt32)p[2]) & 0xff) << 8 ) |\
( ( (sal_uInt32)p[3]) & 0xff);\
}
struct UUID
{
sal_uInt32 time_low;
sal_uInt16 time_mid;
sal_uInt16 time_hi_and_version;
sal_uInt8 clock_seq_hi_and_reserved;
sal_uInt8 clock_seq_low;
sal_uInt8 node[6];
};
static void write_v3( sal_uInt8 *pUuid )
{
UUID uuid;
// copy to avoid alignment problems
memcpy( &uuid , pUuid , 16 );
SWAP_NETWORK_TO_INT32( uuid.time_low );
SWAP_NETWORK_TO_INT16( uuid.time_mid );
SWAP_NETWORK_TO_INT16( uuid.time_hi_and_version );
/* put in the variant and version bits */
uuid.time_hi_and_version &= 0x0FFF;
uuid.time_hi_and_version |= (3 << 12);
uuid.clock_seq_hi_and_reserved &= 0x3F;
uuid.clock_seq_hi_and_reserved |= 0x80;
SWAP_INT32_TO_NETWORK( uuid.time_low );
SWAP_INT16_TO_NETWORK( uuid.time_mid );
SWAP_INT16_TO_NETWORK( uuid.time_hi_and_version );
memcpy( pUuid , &uuid , 16 );
}
extern "C" void SAL_CALL rtl_createUuid( sal_uInt8 *pTargetUUID ,
const sal_uInt8 *, sal_Bool )
{
{
osl::MutexGuard g(osl::Mutex::getGlobalMutex());
static rtlRandomPool pool = NULL;
if (pool == NULL) {
pool = rtl_random_createPool();
if (pool == NULL) {
abort();
// only possible way to signal failure here (rtl_createUuid
// being part of a fixed C API)
}
}
if (rtl_random_getBytes(pool, pTargetUUID, 16) != rtl_Random_E_None) {
abort();
// only possible way to signal failure here (rtl_createUuid
// being part of a fixed C API)
}
}
// See ITU-T Recommendation X.667:
pTargetUUID[6] &= 0x0F;
pTargetUUID[6] |= 0x40;
pTargetUUID[8] &= 0x3F;
pTargetUUID[8] |= 0x80;
}
extern "C" void SAL_CALL rtl_createNamedUuid( sal_uInt8 *pTargetUUID,
const sal_uInt8 *pNameSpaceUUID,
const rtl_String *pName )
{
rtlDigest digest = rtl_digest_createMD5 ();
rtl_digest_updateMD5( digest, pNameSpaceUUID , 16 );
rtl_digest_updateMD5( digest, pName->buffer , pName->length );
rtl_digest_getMD5( digest, pTargetUUID , 16 );
rtl_digest_destroyMD5 (digest);
write_v3(pTargetUUID);
}
extern "C" sal_Int32 SAL_CALL rtl_compareUuid( const sal_uInt8 *pUUID1 , const sal_uInt8 *pUUID2 )
{
int i;
UUID u1;
UUID u2;
memcpy( &u1 , pUUID1 , 16 );
memcpy( &u2 , pUUID2 , 16 );
SWAP_NETWORK_TO_INT32( u1.time_low );
SWAP_NETWORK_TO_INT16( u1.time_mid );
SWAP_NETWORK_TO_INT16( u1.time_hi_and_version );
SWAP_NETWORK_TO_INT32( u2.time_low );
SWAP_NETWORK_TO_INT16( u2.time_mid );
SWAP_NETWORK_TO_INT16( u2.time_hi_and_version );
#define CHECK(f1, f2) if (f1 != f2) return f1 < f2 ? -1 : 1;
CHECK(u1.time_low, u2.time_low);
CHECK(u1.time_mid, u2.time_mid);
CHECK(u1.time_hi_and_version, u2.time_hi_and_version);
CHECK(u1.clock_seq_hi_and_reserved, u2.clock_seq_hi_and_reserved);
CHECK(u1.clock_seq_low, u2.clock_seq_low);
for (i = 0; i < 6; i++)
{
if (u1.node[i] < u2.node[i])
return -1;
if (u1.node[i] > u2.node[i])
return 1;
}
return 0;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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