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/*
Unix SMB/CIFS implementation.
Samba utility functions
Copyright (C) Andrew Tridgell 1992-1998
Copyright (C) Luke Kenneth Caseson Leighton 1998-1999
Copyright (C) Jeremy Allison 1999
Copyright (C) Stefan (metze) Metzmacher 2002
Copyright (C) Simo Sorce 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"
/****************************************************************************
Lookup string names for SID types.
****************************************************************************/
static const struct {
enum SID_NAME_USE sid_type;
const char *string;
} sid_name_type[] = {
{SID_NAME_USER, "User"},
{SID_NAME_DOM_GRP, "Domain Group"},
{SID_NAME_DOMAIN, "Domain"},
{SID_NAME_ALIAS, "Local Group"},
{SID_NAME_WKN_GRP, "Well-known Group"},
{SID_NAME_DELETED, "Deleted Account"},
{SID_NAME_INVALID, "Invalid Account"},
{SID_NAME_UNKNOWN, "UNKNOWN"},
{SID_NAME_USE_NONE, NULL}
};
const char *sid_type_lookup(uint32_t sid_type)
{
int i = 0;
/* Look through list */
while(sid_name_type[i].sid_type != 0) {
if (sid_name_type[i].sid_type == sid_type)
return sid_name_type[i].string;
i++;
}
/* Default return */
return "SID *TYPE* is INVALID";
}
/*****************************************************************
Return the last rid from the end of a sid
*****************************************************************/
BOOL sid_peek_rid(const struct dom_sid *sid, uint32_t *rid)
{
if (!sid || !rid)
return False;
if (sid->num_auths > 0) {
*rid = sid->sub_auths[sid->num_auths - 1];
return True;
}
return False;
}
/*****************************************************************
Return the last rid from the end of a sid
and check the sid against the exp_dom_sid
*****************************************************************/
BOOL sid_peek_check_rid(const struct dom_sid *exp_dom_sid, const struct dom_sid *sid, uint32_t *rid)
{
if (!exp_dom_sid || !sid || !rid)
return False;
if (sid_compare_domain(exp_dom_sid, sid)!=0){
*rid=(-1);
return False;
}
return sid_peek_rid(sid, rid);
}
/*****************************************************************
Compare the auth portion of two sids.
*****************************************************************/
static int sid_compare_auth(const struct dom_sid *sid1, const struct dom_sid *sid2)
{
int i;
if (sid1 == sid2)
return 0;
if (!sid1)
return -1;
if (!sid2)
return 1;
if (sid1->sid_rev_num != sid2->sid_rev_num)
return sid1->sid_rev_num - sid2->sid_rev_num;
for (i = 0; i < 6; i++)
if (sid1->id_auth[i] != sid2->id_auth[i])
return sid1->id_auth[i] - sid2->id_auth[i];
return 0;
}
/*****************************************************************
Compare two sids.
*****************************************************************/
int sid_compare(const struct dom_sid *sid1, const struct dom_sid *sid2)
{
int i;
if (sid1 == sid2)
return 0;
if (!sid1)
return -1;
if (!sid2)
return 1;
/* Compare most likely different rids, first: i.e start at end */
if (sid1->num_auths != sid2->num_auths)
return sid1->num_auths - sid2->num_auths;
for (i = sid1->num_auths-1; i >= 0; --i)
if (sid1->sub_auths[i] != sid2->sub_auths[i])
return sid1->sub_auths[i] - sid2->sub_auths[i];
return sid_compare_auth(sid1, sid2);
}
/*****************************************************************
See if 2 SIDs are in the same domain
this just compares the leading sub-auths
*****************************************************************/
int sid_compare_domain(const struct dom_sid *sid1, const struct dom_sid *sid2)
{
int n, i;
n = MIN(sid1->num_auths, sid2->num_auths);
for (i = n-1; i >= 0; --i)
if (sid1->sub_auths[i] != sid2->sub_auths[i])
return sid1->sub_auths[i] - sid2->sub_auths[i];
return sid_compare_auth(sid1, sid2);
}
/*****************************************************************
Compare two sids.
*****************************************************************/
BOOL sid_equal(const struct dom_sid *sid1, const struct dom_sid *sid2)
{
return sid_compare(sid1, sid2) == 0;
}
/*****************************************************************
Write a sid out into on-the-wire format.
*****************************************************************/
BOOL sid_linearize(char *outbuf, size_t len, const struct dom_sid *sid)
{
size_t i;
if (len < sid_size(sid))
return False;
SCVAL(outbuf,0,sid->sid_rev_num);
SCVAL(outbuf,1,sid->num_auths);
memcpy(&outbuf[2], sid->id_auth, 6);
for(i = 0; i < sid->num_auths; i++)
SIVAL(outbuf, 8 + (i*4), sid->sub_auths[i]);
return True;
}
/*****************************************************************
Calculates size of a sid.
*****************************************************************/
size_t sid_size(const struct dom_sid *sid)
{
if (sid == NULL)
return 0;
return sid->num_auths * sizeof(uint32_t) + 8;
}
/*****************************************************************
Return the binary string representation of a struct dom_sid.
Caller must free.
*****************************************************************/
char *sid_binstring(const struct dom_sid *sid)
{
char *buf, *s;
int len = sid_size(sid);
buf = malloc(len);
if (!buf)
return NULL;
sid_linearize(buf, len, sid);
s = binary_string(buf, len);
free(buf);
return s;
}
/*******************************************************************
Check if ACE has OBJECT type.
********************************************************************/
BOOL sec_ace_object(uint8_t type)
{
if (type == SEC_ACE_TYPE_ACCESS_ALLOWED_OBJECT ||
type == SEC_ACE_TYPE_ACCESS_DENIED_OBJECT ||
type == SEC_ACE_TYPE_SYSTEM_AUDIT_OBJECT ||
type == SEC_ACE_TYPE_SYSTEM_ALARM_OBJECT) {
return True;
}
return False;
}
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