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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* This is an extract from usr/src/common/smbsrv/smb_sid.c,
* with functions renamed as part of a tentative plan for convergence.
*/
#ifndef _KERNEL
#include <stdio.h>
#include <strings.h>
#include <stdlib.h>
#include <syslog.h>
#else /* _KERNEL */
#include <sys/types.h>
#include <sys/sunddi.h>
#endif /* _KERNEL */
#include <sidutil.h>
/*
* sid_len
*
* Returns the number of bytes required to hold the sid.
*/
int
sid_len(sid_t *sid)
{
if (sid == NULL)
return (0);
return (sizeof (sid_t) - sizeof (uint32_t)
+ (sid->sid_subauthcnt * sizeof (uint32_t)));
}
/*
* sid_tostr
*
* Fill in the passed buffer with the string form of the given
* binary sid.
*/
void
sid_tostr(sid_t *sid, char *strsid)
{
char *p = strsid;
int i;
if (sid == NULL || strsid == NULL)
return;
(void) sprintf(p, "S-%d-", sid->sid_revision);
while (*p)
p++;
for (i = 0; i < NT_SID_AUTH_MAX; ++i) {
if (sid->sid_authority[i] != 0 || i == NT_SID_AUTH_MAX - 1) {
(void) sprintf(p, "%d", sid->sid_authority[i]);
while (*p)
p++;
}
}
for (i = 0; i < sid->sid_subauthcnt && i < NT_SID_SUBAUTH_MAX; ++i) {
(void) sprintf(p, "-%u", sid->sid_subauth[i]);
while (*p)
p++;
}
}
/*
* sid_fromstr
*
* Converts a SID in string form to a SID structure. There are lots of
* simplifying assumptions in here. The memory for the SID is allocated
* as if it was the largest possible SID; the caller is responsible for
* freeing the memory when it is no longer required. We assume that the
* string starts with "S-1-" and that the authority is held in the last
* byte, which should be okay for most situations. It also assumes the
* sub-authorities are in decimal format.
*
* On success, a pointer to a SID is returned. Otherwise a null pointer
* is returned.
*/
sid_t *
sid_fromstr(char *sidstr)
{
sid_t *sid;
char *p;
int size;
uint8_t i;
if (sidstr == NULL)
return (NULL);
if (strncmp(sidstr, "S-1-", 4) != 0)
return (NULL);
size = sizeof (sid_t) + (NT_SID_SUBAUTH_MAX * sizeof (uint32_t));
if ((sid = malloc(size)) == NULL)
return (NULL);
bzero(sid, size);
sid->sid_revision = NT_SID_REVISION;
sid->sid_authority[5] = atoi(&sidstr[4]);
for (i = 0, p = &sidstr[5]; i < NT_SID_SUBAUTH_MAX && *p; ++i) {
while (*p && *p == '-')
++p;
if (*p < '0' || *p > '9') {
free(sid);
return (NULL);
}
sid->sid_subauth[i] = strtoul(p, NULL, 10);
while (*p && *p != '-')
++p;
}
sid->sid_subauthcnt = i;
return (sid);
}
void
sid_free(sid_t *sid)
{
#ifdef _KERNEL
if (sid == NULL)
return;
kmem_free(sid, sid_len(sid));
#else
free(sid);
#endif
}
void
sid_to_le(sid_t *sid)
{
int i;
for (i = 0; i < sid->sid_subauthcnt && i < NT_SID_SUBAUTH_MAX; ++i) {
uint32_t v = sid->sid_subauth[i];
uint8_t *p = (uint8_t *)&sid->sid_subauth[i];
p[0] = v & 0xff;
p[1] = (v >> 8) & 0xff;
p[2] = (v >> 16) & 0xff;
p[3] = (v >> 24) & 0xff;
}
}
void
sid_from_le(sid_t *sid)
{
int i;
for (i = 0; i < sid->sid_subauthcnt && i < NT_SID_SUBAUTH_MAX; ++i) {
uint32_t v;
uint8_t *p = (uint8_t *)&sid->sid_subauth[i];
v = p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
sid->sid_subauth[i] = v;
}
}
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