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/*
Unix SMB/CIFS implementation.
Copyright (C) Guenther Deschner 2009
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "librpc/gen_ndr/ndr_secrets.h"
#include "secrets.h"
/******************************************************************************
*******************************************************************************/
static char *lsa_secret_key(TALLOC_CTX *mem_ctx,
const char *secret_name)
{
return talloc_asprintf_strupper_m(mem_ctx, "SECRETS/LSA/%s",
secret_name);
}
/******************************************************************************
*******************************************************************************/
static NTSTATUS lsa_secret_get_common(TALLOC_CTX *mem_ctx,
const char *secret_name,
struct lsa_secret *secret)
{
char *key;
DATA_BLOB blob;
enum ndr_err_code ndr_err;
ZERO_STRUCTP(secret);
key = lsa_secret_key(mem_ctx, secret_name);
if (!key) {
return NT_STATUS_NO_MEMORY;
}
blob.data = (uint8_t *)secrets_fetch(key, &blob.length);
talloc_free(key);
if (!blob.data) {
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
}
ndr_err = ndr_pull_struct_blob(&blob, mem_ctx, secret,
(ndr_pull_flags_fn_t)ndr_pull_lsa_secret);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
SAFE_FREE(blob.data);
return ndr_map_error2ntstatus(ndr_err);
}
/* This is NOT a talloc blob */
BURN_FREE(blob.data, blob.length);
if (secret->secret_current != NULL &&
secret->secret_current->data != NULL) {
talloc_keep_secret(secret->secret_current->data);
}
if (secret->secret_old != NULL && secret->secret_old->data != NULL) {
talloc_keep_secret(secret->secret_old->data);
}
return NT_STATUS_OK;
}
/******************************************************************************
*******************************************************************************/
NTSTATUS lsa_secret_get(TALLOC_CTX *mem_ctx,
const char *secret_name,
DATA_BLOB *secret_current,
NTTIME *secret_current_lastchange,
DATA_BLOB *secret_old,
NTTIME *secret_old_lastchange,
struct security_descriptor **sd)
{
NTSTATUS status;
struct lsa_secret secret;
status = lsa_secret_get_common(mem_ctx, secret_name, &secret);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
if (secret_current) {
*secret_current = data_blob_null;
if (secret.secret_current) {
*secret_current = *secret.secret_current;
}
}
if (secret_current_lastchange) {
*secret_current_lastchange = secret.secret_current_lastchange;
}
if (secret_old) {
*secret_old = data_blob_null;
if (secret.secret_old) {
*secret_old = *secret.secret_old;
}
}
if (secret_old_lastchange) {
*secret_old_lastchange = secret.secret_old_lastchange;
}
if (sd) {
*sd = secret.sd;
}
return NT_STATUS_OK;
}
/******************************************************************************
*******************************************************************************/
static NTSTATUS lsa_secret_set_common(TALLOC_CTX *mem_ctx,
const char *key,
struct lsa_secret *secret,
DATA_BLOB *secret_current,
DATA_BLOB *secret_old,
struct security_descriptor *sd)
{
enum ndr_err_code ndr_err;
DATA_BLOB blob;
struct timeval now = timeval_current();
if (!secret) {
secret = talloc_zero(mem_ctx, struct lsa_secret);
}
if (!secret) {
return NT_STATUS_NO_MEMORY;
}
if (secret_old) {
secret->secret_old = secret_old;
secret->secret_old_lastchange = timeval_to_nttime(&now);
} else {
if (secret->secret_current) {
secret->secret_old = secret->secret_current;
secret->secret_old_lastchange = secret->secret_current_lastchange;
} else {
secret->secret_old = NULL;
secret->secret_old_lastchange = timeval_to_nttime(&now);
}
}
if (secret_current) {
secret->secret_current = secret_current;
secret->secret_current_lastchange = timeval_to_nttime(&now);
} else {
secret->secret_current = NULL;
secret->secret_current_lastchange = timeval_to_nttime(&now);
}
if (sd) {
secret->sd = sd;
}
ndr_err = ndr_push_struct_blob(&blob, mem_ctx, secret,
(ndr_push_flags_fn_t)ndr_push_lsa_secret);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
return ndr_map_error2ntstatus(ndr_err);
}
if (!secrets_store(key, blob.data, blob.length)) {
data_blob_clear(&blob);
return NT_STATUS_ACCESS_DENIED;
}
data_blob_clear(&blob);
return NT_STATUS_OK;
}
/******************************************************************************
*******************************************************************************/
NTSTATUS lsa_secret_set(const char *secret_name,
DATA_BLOB *secret_current,
DATA_BLOB *secret_old,
struct security_descriptor *sd)
{
char *key;
struct lsa_secret secret;
NTSTATUS status;
key = lsa_secret_key(talloc_tos(), secret_name);
if (!key) {
return NT_STATUS_NO_MEMORY;
}
status = lsa_secret_get_common(talloc_tos(), secret_name, &secret);
if (!NT_STATUS_IS_OK(status) &&
!NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
talloc_free(key);
return status;
}
status = lsa_secret_set_common(talloc_tos(), key,
&secret,
secret_current,
secret_old,
sd);
talloc_free(key);
return status;
}
/******************************************************************************
*******************************************************************************/
NTSTATUS lsa_secret_delete(const char *secret_name)
{
char *key;
struct lsa_secret secret;
NTSTATUS status;
key = lsa_secret_key(talloc_tos(), secret_name);
if (!key) {
return NT_STATUS_NO_MEMORY;
}
status = lsa_secret_get_common(talloc_tos(), secret_name, &secret);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(key);
return status;
}
if (!secrets_delete_entry(key)) {
talloc_free(key);
return NT_STATUS_ACCESS_DENIED;
}
talloc_free(key);
return NT_STATUS_OK;
}
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