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author | cvs2svn Import User <samba-bugs@samba.org> | 2002-08-17 07:09:23 +0000 |
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committer | cvs2svn Import User <samba-bugs@samba.org> | 2002-08-17 07:09:23 +0000 |
commit | 592dd249579511f7ce863a42030d9a51ca026c27 (patch) | |
tree | 805985e633b375fd0a88a564a35c38410093a1dd /source3/lib/util_uuid.c | |
parent | 08663f11ed5bc05ff352bda74774d5e7045da1e5 (diff) | |
parent | 8690b271a6a4feb112e0a6c03fe99ee25f86430b (diff) | |
download | samba-592dd249579511f7ce863a42030d9a51ca026c27.tar.gz samba-592dd249579511f7ce863a42030d9a51ca026c27.tar.bz2 samba-592dd249579511f7ce863a42030d9a51ca026c27.zip |
This commit was manufactured by cvs2svn to create branch 'SAMBA_3_0'.(This used to be commit 6938b5b98abd9ba055a46583a05c4fc07e32f529)
Diffstat (limited to 'source3/lib/util_uuid.c')
-rw-r--r-- | source3/lib/util_uuid.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/source3/lib/util_uuid.c b/source3/lib/util_uuid.c new file mode 100644 index 0000000000..63e2504982 --- /dev/null +++ b/source3/lib/util_uuid.c @@ -0,0 +1,72 @@ +/* + * Unix SMB/CIFS implementation. + * UUID server routines + * Copyright (C) Theodore Ts'o 1996, 1997, + * Copyright (C) Jim McDonough 2002. + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include "includes.h" + +/* + * Offset between 15-Oct-1582 and 1-Jan-70 + */ +#define TIME_OFFSET_HIGH 0x01B21DD2 +#define TIME_OFFSET_LOW 0x13814000 + +struct uuid { + uint32 time_low; + uint16 time_mid; + uint16 time_hi_and_version; + uint16 clock_seq; + uint8 node[6]; +}; + + +static void uuid_pack(const struct uuid *uu, GUID *ptr) +{ + uint8 *out = ptr->info; + + SIVAL(out, 0, uu->time_low); + SSVAL(out, 4, uu->time_mid); + SSVAL(out, 6, uu->time_hi_and_version); + SSVAL(out, 8, uu->clock_seq); + memcpy(out+10, uu->node, 6); +} + +static void uuid_unpack(const GUID in, struct uuid *uu) +{ + const uint8 *ptr = in.info; + + uu->time_low = IVAL(ptr, 0); + uu->time_mid = SVAL(ptr, 4); + uu->time_hi_and_version = SVAL(ptr, 6); + uu->clock_seq = SVAL(ptr, 8); + memcpy(uu->node, ptr+10, 6); +} + +void uuid_generate_random(GUID *out) +{ + GUID tmp; + struct uuid uu; + + generate_random_buffer(tmp.info, sizeof(tmp.info), True); + uuid_unpack(tmp, &uu); + + uu.clock_seq = (uu.clock_seq & 0x3FFF) | 0x8000; + uu.time_hi_and_version = (uu.time_hi_and_version & 0x0FFF) | 0x4000; + uuid_pack(&uu, out); +} |