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/*
* Unix SMB/CIFS implementation.
* UUID server routines
* Copyright (C) Theodore Ts'o 1996, 1997,
* Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2002, 2003
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
/*
* Offset between 15-Oct-1582 and 1-Jan-70
*/
#define TIME_OFFSET_HIGH 0x01B21DD2
#define TIME_OFFSET_LOW 0x13814000
void smb_uuid_pack(const struct GUID uu, UUID_FLAT *ptr)
{
SIVAL(ptr->info, 0, uu.time_low);
SSVAL(ptr->info, 4, uu.time_mid);
SSVAL(ptr->info, 6, uu.time_hi_and_version);
memcpy(ptr->info+8, uu.clock_seq, 2);
memcpy(ptr->info+10, uu.node, 6);
}
void smb_uuid_unpack(const UUID_FLAT in, struct GUID *uu)
{
uu->time_low = IVAL(in.info, 0);
uu->time_mid = SVAL(in.info, 4);
uu->time_hi_and_version = SVAL(in.info, 6);
memcpy(uu->clock_seq, in.info+8, 2);
memcpy(uu->node, in.info+10, 6);
}
void smb_uuid_generate_random(struct GUID *uu)
{
UUID_FLAT tmp;
generate_random_buffer(tmp.info, sizeof(tmp.info));
smb_uuid_unpack(tmp, uu);
uu->clock_seq[0] = (uu->clock_seq[0] & 0x3F) | 0x80;
uu->time_hi_and_version = (uu->time_hi_and_version & 0x0FFF) | 0x4000;
}
bool smb_string_to_uuid(const char *in, struct GUID* uu)
{
bool ret = False;
const char *ptr = in;
char *end = (char *)in;
int i;
unsigned v1, v2;
if (!in || !uu) goto out;
uu->time_low = strtoul(ptr, &end, 16);
if ((end - ptr) != 8 || *end != '-') goto out;
ptr = (end + 1);
uu->time_mid = strtoul(ptr, &end, 16);
if ((end - ptr) != 4 || *end != '-') goto out;
ptr = (end + 1);
uu->time_hi_and_version = strtoul(ptr, &end, 16);
if ((end - ptr) != 4 || *end != '-') goto out;
ptr = (end + 1);
if (sscanf(ptr, "%02x%02x", &v1, &v2) != 2) {
goto out;
}
uu->clock_seq[0] = v1;
uu->clock_seq[1] = v2;
ptr += 4;
if (*ptr != '-') goto out;
ptr++;
for (i = 0; i < 6; i++) {
if (sscanf(ptr, "%02x", &v1) != 1) {
goto out;
}
uu->node[i] = v1;
ptr += 2;
}
ret = True;
out:
return ret;
}
/*****************************************************************
Return the binary string representation of a GUID.
Caller must free.
*****************************************************************/
char *guid_binstring(const struct GUID *guid)
{
UUID_FLAT guid_flat;
smb_uuid_pack(*guid, &guid_flat);
return binary_string_rfc2254((char *)guid_flat.info, UUID_FLAT_SIZE);
}
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