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/*
Unix SMB/CIFS implementation.
dcerpc authentication operations
Copyright (C) Andrew Tridgell 2003
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"
/*
wrappers for the ntlmssp_*() functions
*/
static NTSTATUS ntlm_unseal_packet(struct dcerpc_security *dcerpc_security,
uchar *data, size_t length, DATA_BLOB *sig)
{
struct ntlmssp_state *ntlmssp_state = dcerpc_security->private;
return ntlmssp_unseal_packet(ntlmssp_state, data, length, sig);
}
static NTSTATUS ntlm_check_packet(struct dcerpc_security *dcerpc_security,
const uchar *data, size_t length,
const DATA_BLOB *sig)
{
struct ntlmssp_state *ntlmssp_state = dcerpc_security->private;
return ntlmssp_check_packet(ntlmssp_state, data, length, sig);
}
static NTSTATUS ntlm_seal_packet(struct dcerpc_security *dcerpc_security,
uchar *data, size_t length,
DATA_BLOB *sig)
{
struct ntlmssp_state *ntlmssp_state = dcerpc_security->private;
return ntlmssp_seal_packet(ntlmssp_state, data, length, sig);
}
static NTSTATUS ntlm_sign_packet(struct dcerpc_security *dcerpc_security,
const uchar *data, size_t length,
DATA_BLOB *sig)
{
struct ntlmssp_state *ntlmssp_state = dcerpc_security->private;
return ntlmssp_sign_packet(ntlmssp_state, data, length, sig);
}
static void ntlm_security_end(struct dcerpc_security *dcerpc_security)
{
struct ntlmssp_state *ntlmssp_state = dcerpc_security->private;
ntlmssp_end(&ntlmssp_state);
}
/*
do ntlm style authentication on a dcerpc pipe
*/
NTSTATUS dcerpc_bind_auth_ntlm(struct dcerpc_pipe *p,
const char *uuid, unsigned version,
const char *domain,
const char *username,
const char *password)
{
NTSTATUS status;
struct ntlmssp_state *state;
TALLOC_CTX *mem_ctx;
DATA_BLOB credentials;
mem_ctx = talloc_init("dcerpc_bind_auth_ntlm");
if (!mem_ctx) {
return NT_STATUS_NO_MEMORY;
}
status = ntlmssp_client_start(&state);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
status = ntlmssp_set_domain(state, domain);
if (!NT_STATUS_IS_OK(status)) {
goto done;
}
status = ntlmssp_set_username(state, username);
if (!NT_STATUS_IS_OK(status)) {
goto done;
}
status = ntlmssp_set_password(state, password);
if (!NT_STATUS_IS_OK(status)) {
goto done;
}
p->auth_info = talloc(p->mem_ctx, sizeof(*p->auth_info));
if (!p->auth_info) {
status = NT_STATUS_NO_MEMORY;
goto done;
}
p->auth_info->auth_type = DCERPC_AUTH_TYPE_NTLMSSP;
if (p->flags & DCERPC_SEAL) {
p->auth_info->auth_level = DCERPC_AUTH_LEVEL_PRIVACY;
state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN | NTLMSSP_NEGOTIATE_SEAL;
} else {
/* ntlmssp does not work on dcerpc with
AUTH_LEVEL_NONE */
state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
p->auth_info->auth_level = DCERPC_AUTH_LEVEL_INTEGRITY;
}
p->auth_info->auth_pad_length = 0;
p->auth_info->auth_reserved = 0;
p->auth_info->auth_context_id = random();
p->auth_info->credentials = data_blob(NULL, 0);
p->security_state = NULL;
status = ntlmssp_update(state,
p->auth_info->credentials,
&credentials);
if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
goto done;
}
p->auth_info->credentials = data_blob_talloc(mem_ctx,
credentials.data,
credentials.length);
data_blob_free(&credentials);
status = dcerpc_bind_byuuid(p, mem_ctx, uuid, version);
if (!NT_STATUS_IS_OK(status)) {
goto done;
}
status = ntlmssp_update(state,
p->auth_info->credentials,
&credentials);
if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
goto done;
}
p->auth_info->credentials = data_blob_talloc(mem_ctx,
credentials.data,
credentials.length);
data_blob_free(&credentials);
status = dcerpc_auth3(p, mem_ctx);
if (!NT_STATUS_IS_OK(status)) {
goto done;
}
p->security_state = talloc_p(p->mem_ctx, struct dcerpc_security);
if (!p->security_state) {
status = NT_STATUS_NO_MEMORY;
goto done;
}
p->security_state->private = state;
p->security_state->unseal_packet = ntlm_unseal_packet;
p->security_state->check_packet = ntlm_check_packet;
p->security_state->seal_packet = ntlm_seal_packet;
p->security_state->sign_packet = ntlm_sign_packet;
p->security_state->security_end = ntlm_security_end;
switch (p->auth_info->auth_level) {
case DCERPC_AUTH_LEVEL_PRIVACY:
case DCERPC_AUTH_LEVEL_INTEGRITY:
/* setup for signing */
status = ntlmssp_sign_init(state);
break;
}
done:
talloc_destroy(mem_ctx);
if (!NT_STATUS_IS_OK(status)) {
p->security_state = NULL;
p->auth_info = NULL;
}
return status;
}
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