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/*
Unix SMB/CIFS implementation.
UUID/GUID functions
Copyright (C) Theodore Ts'o 1996, 1997,
Copyright (C) Jim McDonough 2002.
Copyright (C) Andrew Tridgell 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 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"
/**
build a GUID from a string
*/
_PUBLIC_ NTSTATUS GUID_from_string(const char *s, struct GUID *guid)
{
NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
uint32_t time_low;
uint32_t time_mid, time_hi_and_version;
uint32_t clock_seq[2];
uint32_t node[6];
int i;
if (s == NULL) {
return NT_STATUS_INVALID_PARAMETER;
}
if (11 == sscanf(s, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
&time_low, &time_mid, &time_hi_and_version,
&clock_seq[0], &clock_seq[1],
&node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
status = NT_STATUS_OK;
} else if (11 == sscanf(s, "{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
&time_low, &time_mid, &time_hi_and_version,
&clock_seq[0], &clock_seq[1],
&node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
status = NT_STATUS_OK;
}
if (!NT_STATUS_IS_OK(status)) {
return status;
}
guid->time_low = time_low;
guid->time_mid = time_mid;
guid->time_hi_and_version = time_hi_and_version;
guid->clock_seq[0] = clock_seq[0];
guid->clock_seq[1] = clock_seq[1];
for (i=0;i<6;i++) {
guid->node[i] = node[i];
}
return NT_STATUS_OK;
}
/**
* generate a random GUID
*/
struct GUID GUID_random(void)
{
struct GUID guid;
generate_random_buffer((uint8_t *)&guid, sizeof(guid));
guid.clock_seq[0] = (guid.clock_seq[0] & 0x3F) | 0x80;
guid.time_hi_and_version = (guid.time_hi_and_version & 0x0FFF) | 0x4000;
return guid;
}
/**
* generate an empty GUID
*/
_PUBLIC_ struct GUID GUID_zero(void)
{
struct GUID guid;
ZERO_STRUCT(guid);
return guid;
}
_PUBLIC_ BOOL GUID_all_zero(const struct GUID *u)
{
if (u->time_low != 0 ||
u->time_mid != 0 ||
u->time_hi_and_version != 0 ||
u->clock_seq[0] != 0 ||
u->clock_seq[1] != 0 ||
!all_zero(u->node, 6)) {
return False;
}
return True;
}
_PUBLIC_ BOOL GUID_equal(const struct GUID *u1, const struct GUID *u2)
{
if (u1->time_low != u2->time_low ||
u1->time_mid != u2->time_mid ||
u1->time_hi_and_version != u2->time_hi_and_version ||
u1->clock_seq[0] != u2->clock_seq[0] ||
u1->clock_seq[1] != u2->clock_seq[1] ||
memcmp(u1->node, u2->node, 6) != 0) {
return False;
}
return True;
}
/**
its useful to be able to display these in debugging messages
*/
_PUBLIC_ char *GUID_string(TALLOC_CTX *mem_ctx, const struct GUID *guid)
{
return talloc_asprintf(mem_ctx,
"%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
guid->time_low, guid->time_mid,
guid->time_hi_and_version,
guid->clock_seq[0],
guid->clock_seq[1],
guid->node[0], guid->node[1],
guid->node[2], guid->node[3],
guid->node[4], guid->node[5]);
}
_PUBLIC_ char *GUID_string2(TALLOC_CTX *mem_ctx, const struct GUID *guid)
{
char *ret, *s = GUID_string(mem_ctx, guid);
ret = talloc_asprintf(mem_ctx, "{%s}", s);
talloc_free(s);
return ret;
}
_PUBLIC_ BOOL policy_handle_empty(struct policy_handle *h)
{
return (h->handle_type == 0 && GUID_all_zero(&h->uuid));
}
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