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/*
Unix SMB/Netbios implementation.
Version 1.9.
Samba utility functions
Copyright (C) Andrew Tridgell 1992-1998
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"
extern int DEBUGLEVEL;
/*****************************************************************
Convert a SID to an ascii string.
*****************************************************************/
char *sid_to_string(pstring sidstr_out, const DOM_SID *sid)
{
char subauth[16];
int i;
/* BIG NOTE: this function only does SIDS where the identauth is not >= 2^32 */
uint32 ia = (sid->id_auth[5]) +
(sid->id_auth[4] << 8 ) +
(sid->id_auth[3] << 16) +
(sid->id_auth[2] << 24);
slprintf(sidstr_out, sizeof(pstring) - 1, "S-%u-%lu", (unsigned int)sid->sid_rev_num, (unsigned long)ia);
for (i = 0; i < sid->num_auths; i++)
{
slprintf(subauth, sizeof(subauth)-1, "-%lu", (unsigned long)sid->sub_auths[i]);
pstrcat(sidstr_out, subauth);
}
DEBUG(7,("sid_to_string returning %s\n", sidstr_out));
return sidstr_out;
}
/*****************************************************************
Convert a string to a SID. Returns True on success, False on fail.
*****************************************************************/
BOOL string_to_sid(DOM_SID *sidout, const char *sidstr)
{
const char *p = sidstr;
/* BIG NOTE: this function only does SIDS where the identauth is not >= 2^32 */
uint32 ia;
memset((char *)sidout, '\0', sizeof(DOM_SID));
if (StrnCaseCmp( sidstr, "S-", 2))
{
DEBUG(0,("string_to_sid: Sid %s does not start with 'S-'.\n", sidstr));
return False;
}
if ((p = strchr(p, '-')) == NULL)
{
DEBUG(0,("string_to_sid: Sid %s is not in a valid format.\n", sidstr));
return False;
}
p++;
/* Get the revision number. */
sidout->sid_rev_num = (uint8)strtoul(p,NULL,10);
if ((p = strchr(p, '-')) == NULL)
{
DEBUG(0,("string_to_sid: Sid %s is not in a valid format.\n", sidstr));
return False;
}
p++;
/* identauth in decimal should be < 2^32 */
ia = (uint32)strtoul(p,NULL,10);
/* NOTE - the ia value is in big-endian format. */
sidout->id_auth[0] = 0;
sidout->id_auth[1] = 0;
sidout->id_auth[2] = (ia & 0xff000000) >> 24;
sidout->id_auth[3] = (ia & 0x00ff0000) >> 16;
sidout->id_auth[4] = (ia & 0x0000ff00) >> 8;
sidout->id_auth[5] = (ia & 0x000000ff);
sidout->num_auths = 0;
while (((p = strchr(p, '-')) != NULL) && sidout->num_auths < MAXSUBAUTHS)
{
p++;
/*
* NOTE - the subauths are in native machine-endian format. They
* are converted to little-endian when linearized onto the wire.
*/
sid_append_rid(sidout, (uint32)strtoul(p, NULL, 10));
}
return True;
}
/*****************************************************************
add a rid to the end of a sid
*****************************************************************/
BOOL sid_append_rid(DOM_SID *sid, uint32 rid)
{
if (sid->num_auths < MAXSUBAUTHS)
{
sid->sub_auths[sid->num_auths++] = rid;
return True;
}
return False;
}
/*****************************************************************
removes the last rid from the end of a sid
*****************************************************************/
BOOL sid_split_rid(DOM_SID *sid, uint32 *rid)
{
if (sid->num_auths > 0)
{
sid->num_auths--;
if (rid != NULL)
{
(*rid) = sid->sub_auths[sid->num_auths];
}
return True;
}
return False;
}
/*****************************************************************
copies a sid
*****************************************************************/
void sid_copy(DOM_SID *sid1, const DOM_SID *sid2)
{
int i;
for (i = 0; i < 6; i++)
{
sid1->id_auth[i] = sid2->id_auth[i];
}
for (i = 0; i < sid2->num_auths; i++)
{
sid1->sub_auths[i] = sid2->sub_auths[i];
}
sid1->num_auths = sid2->num_auths;
sid1->sid_rev_num = sid2->sid_rev_num;
}
/*****************************************************************
compare two sids up to the auths of the first sid
*****************************************************************/
BOOL sid_front_equal(const DOM_SID *sid1, const DOM_SID *sid2)
{
int i;
/* compare most likely different rids, first: i.e start at end */
for (i = sid1->num_auths-1; i >= 0; --i)
{
if (sid1->sub_auths[i] != sid2->sub_auths[i]) return False;
}
if (sid1->num_auths > sid2->num_auths ) return False;
if (sid1->sid_rev_num != sid2->sid_rev_num) return False;
for (i = 0; i < 6; i++)
{
if (sid1->id_auth[i] != sid2->id_auth[i]) return False;
}
return True;
}
/*****************************************************************
compare two sids
*****************************************************************/
BOOL sid_equal(const DOM_SID *sid1, const DOM_SID *sid2)
{
int i;
/* compare most likely different rids, first: i.e start at end */
for (i = sid1->num_auths-1; i >= 0; --i)
{
if (sid1->sub_auths[i] != sid2->sub_auths[i]) return False;
}
if (sid1->num_auths != sid2->num_auths ) return False;
if (sid1->sid_rev_num != sid2->sid_rev_num) return False;
for (i = 0; i < 6; i++)
{
if (sid1->id_auth[i] != sid2->id_auth[i]) return False;
}
return True;
}
/*****************************************************************
calculates size of a sid
*****************************************************************/
int sid_size(const DOM_SID *sid)
{
if (sid == NULL)
{
return 0;
}
return sid->num_auths * sizeof(uint32) + 8;
}
/*****************************************************************
Duplicates a sid - mallocs the target.
*****************************************************************/
DOM_SID *sid_dup(DOM_SID *src)
{
DOM_SID *dst;
if(!src)
return NULL;
if((dst = (DOM_SID*)malloc(sizeof(DOM_SID))) != NULL) {
memset(dst, '\0', sizeof(DOM_SID));
sid_copy( dst, src);
}
return dst;
}
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