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/*
* Unix SMB/CIFS implementation.
* Version 3.0
* NTLMSSP Signing routines
* Copyright (C) Luke Kenneth Casson Leighton 1996-2001
* Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003-2005
*
* 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 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 "auth/ntlmssp/ntlmssp.h"
#include "auth/gensec/gensec.h"
#include "auth/gensec/gensec_internal.h"
#include "auth/ntlmssp/ntlmssp_private.h"
NTSTATUS gensec_ntlmssp_magic(struct gensec_security *gensec_security,
const DATA_BLOB *first_packet)
{
if (ntlmssp_blob_matches_magic(first_packet)) {
return NT_STATUS_OK;
} else {
return NT_STATUS_INVALID_PARAMETER;
}
}
/**
* Return the NTLMSSP master session key
*
* @param ntlmssp_state NTLMSSP State
*/
NTSTATUS gensec_ntlmssp_session_key(struct gensec_security *gensec_security,
TALLOC_CTX *mem_ctx,
DATA_BLOB *session_key)
{
struct gensec_ntlmssp_context *gensec_ntlmssp =
talloc_get_type_abort(gensec_security->private_data,
struct gensec_ntlmssp_context);
struct ntlmssp_state *ntlmssp_state = gensec_ntlmssp->ntlmssp_state;
if (ntlmssp_state->expected_state != NTLMSSP_DONE) {
return NT_STATUS_NO_USER_SESSION_KEY;
}
if (!ntlmssp_state->session_key.data) {
return NT_STATUS_NO_USER_SESSION_KEY;
}
*session_key = data_blob_talloc(mem_ctx, ntlmssp_state->session_key.data, ntlmssp_state->session_key.length);
if (!session_key->data) {
return NT_STATUS_NO_MEMORY;
}
return NT_STATUS_OK;
}
bool gensec_ntlmssp_have_feature(struct gensec_security *gensec_security,
uint32_t feature)
{
struct gensec_ntlmssp_context *gensec_ntlmssp =
talloc_get_type_abort(gensec_security->private_data,
struct gensec_ntlmssp_context);
struct ntlmssp_state *ntlmssp_state = gensec_ntlmssp->ntlmssp_state;
if (feature & GENSEC_FEATURE_SIGN) {
if (!ntlmssp_state->session_key.length) {
return false;
}
if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN) {
return true;
}
}
if (feature & GENSEC_FEATURE_SEAL) {
if (!ntlmssp_state->session_key.length) {
return false;
}
if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL) {
return true;
}
}
if (feature & GENSEC_FEATURE_SESSION_KEY) {
if (ntlmssp_state->session_key.length) {
return true;
}
}
if (feature & GENSEC_FEATURE_DCE_STYLE) {
return true;
}
if (feature & GENSEC_FEATURE_ASYNC_REPLIES) {
if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
return true;
}
}
if (feature & GENSEC_FEATURE_SIGN_PKT_HEADER) {
return true;
}
if (feature & GENSEC_FEATURE_NEW_SPNEGO) {
if (!ntlmssp_state->session_key.length) {
return false;
}
if (!(ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN)) {
return false;
}
return ntlmssp_state->new_spnego;
}
return false;
}
NTSTATUS gensec_ntlmssp_start(struct gensec_security *gensec_security)
{
struct gensec_ntlmssp_context *gensec_ntlmssp;
gensec_ntlmssp = talloc_zero(gensec_security,
struct gensec_ntlmssp_context);
if (!gensec_ntlmssp) {
return NT_STATUS_NO_MEMORY;
}
gensec_security->private_data = gensec_ntlmssp;
return NT_STATUS_OK;
}
NTSTATUS gensec_ntlmssp_sign_packet(struct gensec_security *gensec_security,
TALLOC_CTX *sig_mem_ctx,
const uint8_t *data, size_t length,
const uint8_t *whole_pdu, size_t pdu_length,
DATA_BLOB *sig)
{
struct gensec_ntlmssp_context *gensec_ntlmssp =
talloc_get_type_abort(gensec_security->private_data,
struct gensec_ntlmssp_context);
NTSTATUS nt_status;
nt_status = ntlmssp_sign_packet(gensec_ntlmssp->ntlmssp_state,
sig_mem_ctx,
data, length,
whole_pdu, pdu_length,
sig);
return nt_status;
}
NTSTATUS gensec_ntlmssp_check_packet(struct gensec_security *gensec_security,
const uint8_t *data, size_t length,
const uint8_t *whole_pdu, size_t pdu_length,
const DATA_BLOB *sig)
{
struct gensec_ntlmssp_context *gensec_ntlmssp =
talloc_get_type_abort(gensec_security->private_data,
struct gensec_ntlmssp_context);
NTSTATUS nt_status;
nt_status = ntlmssp_check_packet(gensec_ntlmssp->ntlmssp_state,
data, length,
whole_pdu, pdu_length,
sig);
return nt_status;
}
NTSTATUS gensec_ntlmssp_seal_packet(struct gensec_security *gensec_security,
TALLOC_CTX *sig_mem_ctx,
uint8_t *data, size_t length,
const uint8_t *whole_pdu, size_t pdu_length,
DATA_BLOB *sig)
{
struct gensec_ntlmssp_context *gensec_ntlmssp =
talloc_get_type_abort(gensec_security->private_data,
struct gensec_ntlmssp_context);
NTSTATUS nt_status;
nt_status = ntlmssp_seal_packet(gensec_ntlmssp->ntlmssp_state,
sig_mem_ctx,
data, length,
whole_pdu, pdu_length,
sig);
return nt_status;
}
/*
wrappers for the ntlmssp_*() functions
*/
NTSTATUS gensec_ntlmssp_unseal_packet(struct gensec_security *gensec_security,
uint8_t *data, size_t length,
const uint8_t *whole_pdu, size_t pdu_length,
const DATA_BLOB *sig)
{
struct gensec_ntlmssp_context *gensec_ntlmssp =
talloc_get_type_abort(gensec_security->private_data,
struct gensec_ntlmssp_context);
NTSTATUS nt_status;
nt_status = ntlmssp_unseal_packet(gensec_ntlmssp->ntlmssp_state,
data, length,
whole_pdu, pdu_length,
sig);
return nt_status;
}
size_t gensec_ntlmssp_sig_size(struct gensec_security *gensec_security, size_t data_size)
{
return NTLMSSP_SIG_SIZE;
}
NTSTATUS gensec_ntlmssp_wrap(struct gensec_security *gensec_security,
TALLOC_CTX *out_mem_ctx,
const DATA_BLOB *in,
DATA_BLOB *out)
{
struct gensec_ntlmssp_context *gensec_ntlmssp =
talloc_get_type_abort(gensec_security->private_data,
struct gensec_ntlmssp_context);
return ntlmssp_wrap(gensec_ntlmssp->ntlmssp_state,
out_mem_ctx,
in, out);
}
NTSTATUS gensec_ntlmssp_unwrap(struct gensec_security *gensec_security,
TALLOC_CTX *out_mem_ctx,
const DATA_BLOB *in,
DATA_BLOB *out)
{
struct gensec_ntlmssp_context *gensec_ntlmssp =
talloc_get_type_abort(gensec_security->private_data,
struct gensec_ntlmssp_context);
return ntlmssp_unwrap(gensec_ntlmssp->ntlmssp_state,
out_mem_ctx,
in, out);
}
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