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/*
Unix SMB/CIFS implementation.
security descriptror utility functions
Copyright (C) Andrew Tridgell 2004
Copyright (C) Stefan Metzmacher 2005
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"
#include "dsdb/samdb/samdb.h"
/*
return a blank security token
*/
struct security_token *security_token_initialise(TALLOC_CTX *mem_ctx)
{
struct security_token *st;
st = talloc(mem_ctx, struct security_token);
if (!st) {
return NULL;
}
st->user_sid = NULL;
st->group_sid = NULL;
st->num_sids = 0;
st->sids = NULL;
st->privilege_mask = 0;
return st;
}
/****************************************************************************
Create the SID list for this user.
****************************************************************************/
NTSTATUS security_token_create(TALLOC_CTX *mem_ctx,
struct dom_sid *user_sid,
struct dom_sid *group_sid,
int n_groupSIDs,
struct dom_sid **groupSIDs,
BOOL is_authenticated,
struct security_token **token)
{
struct security_token *ptoken;
int i;
NTSTATUS status;
ptoken = security_token_initialise(mem_ctx);
NT_STATUS_HAVE_NO_MEMORY(ptoken);
ptoken->sids = talloc_array(ptoken, struct dom_sid *, n_groupSIDs + 5);
NT_STATUS_HAVE_NO_MEMORY(ptoken->sids);
ptoken->user_sid = talloc_reference(ptoken, user_sid);
ptoken->group_sid = talloc_reference(ptoken, group_sid);
ptoken->privilege_mask = 0;
ptoken->sids[0] = ptoken->user_sid;
ptoken->sids[1] = ptoken->group_sid;
/*
* Finally add the "standard" SIDs.
* The only difference between guest and "anonymous"
* is the addition of Authenticated_Users.
*/
ptoken->sids[2] = dom_sid_parse_talloc(ptoken->sids, SID_WORLD);
NT_STATUS_HAVE_NO_MEMORY(ptoken->sids[2]);
ptoken->sids[3] = dom_sid_parse_talloc(ptoken->sids, SID_NT_NETWORK);
NT_STATUS_HAVE_NO_MEMORY(ptoken->sids[3]);
ptoken->num_sids = 4;
if (is_authenticated) {
ptoken->sids[4] = dom_sid_parse_talloc(ptoken->sids, SID_NT_AUTHENTICATED_USERS);
NT_STATUS_HAVE_NO_MEMORY(ptoken->sids[4]);
ptoken->num_sids++;
}
for (i = 0; i < n_groupSIDs; i++) {
size_t check_sid_idx;
for (check_sid_idx = 1;
check_sid_idx < ptoken->num_sids;
check_sid_idx++) {
if (dom_sid_equal(ptoken->sids[check_sid_idx], groupSIDs[i])) {
break;
}
}
if (check_sid_idx == ptoken->num_sids) {
ptoken->sids[ptoken->num_sids++] = talloc_reference(ptoken->sids, groupSIDs[i]);
}
}
/* setup the privilege mask for this token */
status = samdb_privilege_setup(ptoken);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(ptoken);
return status;
}
security_token_debug(10, ptoken);
*token = ptoken;
return NT_STATUS_OK;
}
/****************************************************************************
prints a struct security_token to debug output.
****************************************************************************/
void security_token_debug(int dbg_lev, const struct security_token *token)
{
TALLOC_CTX *mem_ctx;
int i;
uint_t privilege;
if (!token) {
DEBUG(dbg_lev, ("Security token: (NULL)\n"));
return;
}
mem_ctx = talloc_init("security_token_debug()");
if (!mem_ctx) {
return;
}
DEBUG(dbg_lev, ("Security token of user %s\n",
dom_sid_string(mem_ctx, token->user_sid) ));
DEBUGADD(dbg_lev, (" SIDs (%lu):\n",
(unsigned long)token->num_sids));
for (i = 0; i < token->num_sids; i++) {
DEBUGADD(dbg_lev, (" SID[%3lu]: %s\n", (unsigned long)i,
dom_sid_string(mem_ctx, token->sids[i])));
}
DEBUGADD(dbg_lev, (" Privileges (0x%08X%08X):\n",
(uint32_t)((token->privilege_mask & 0xFFFFFFFF00000000LL) >> 32),
(uint32_t)(token->privilege_mask & 0x00000000FFFFFFFFLL)));
if (token->privilege_mask) {
i = 0;
for (privilege = 0; privilege < 64; privilege++) {
uint64_t mask = sec_privilege_mask(privilege);
if (token->privilege_mask & mask) {
DEBUGADD(dbg_lev, (" Privilege[%3lu]: %s\n", (unsigned long)i++,
sec_privilege_name(privilege)));
}
}
}
talloc_free(mem_ctx);
}
/* These really should be cheaper... */
BOOL is_system_token(struct security_token *token)
{
TALLOC_CTX *mem_ctx = talloc_new(token);
if (dom_sid_equal(token->user_sid, dom_sid_parse_talloc(mem_ctx, SID_NT_SYSTEM))) {
talloc_free(mem_ctx);
return True;
}
talloc_free(mem_ctx);
return False;
}
BOOL is_anonymous_token(struct security_token *token)
{
TALLOC_CTX *mem_ctx = talloc_new(token);
if (dom_sid_equal(token->user_sid, dom_sid_parse_talloc(mem_ctx, SID_NT_ANONYMOUS))) {
talloc_free(mem_ctx);
return True;
}
talloc_free(mem_ctx);
return False;
}
BOOL is_authenticated_token(struct security_token *token)
{
TALLOC_CTX *mem_ctx = talloc_new(token);
int i;
struct dom_sid *authenticated = dom_sid_parse_talloc(mem_ctx, SID_NT_ANONYMOUS);
for (i = 0; i < token->num_sids; i++) {
if (dom_sid_equal(token->sids[i], authenticated)) {
talloc_free(mem_ctx);
return True;
}
}
talloc_free(mem_ctx);
return False;
}
BOOL is_administrator_token(struct security_token *token)
{
TALLOC_CTX *mem_ctx = talloc_new(token);
int i;
struct dom_sid *administrators = dom_sid_parse_talloc(mem_ctx, SID_BUILTIN_ADMINISTRATORS);
for (i = 0; i < token->num_sids; i++) {
if (dom_sid_equal(token->sids[i], administrators)) {
talloc_free(mem_ctx);
return True;
}
}
talloc_free(mem_ctx);
return False;
}
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