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/*
Unix SMB/CIFS implementation.
server side dcerpc authentication code - NTLMSSP auth/crypto code
Copyright (C) Andrew Tridgell 2004
Copyright (C) Stefan (metze) Metzmacher 2004
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.
*/
/*
this provides a crypto interface to the various backends (such as
NTLMSSP and SCHANNEL) for the rpc server code
*/
#include "includes.h"
/*
start crypto state
*/
static NTSTATUS dcesrv_crypto_ntlmssp_start(struct dcesrv_auth *auth)
{
struct auth_ntlmssp_state *ntlmssp = NULL;
NTSTATUS status;
status = auth_ntlmssp_start(&ntlmssp);
auth->crypto_ctx.private_data = ntlmssp;
return status;
}
/*
update crypto state
*/
static NTSTATUS dcesrv_crypto_ntlmssp_update(struct dcesrv_auth *auth, TALLOC_CTX *out_mem_ctx,
const DATA_BLOB in, DATA_BLOB *out)
{
struct auth_ntlmssp_state *auth_ntlmssp_state = auth->crypto_ctx.private_data;
return ntlmssp_update(auth_ntlmssp_state->ntlmssp_state, out_mem_ctx, in, out);
}
/*
seal a packet
*/
static NTSTATUS dcesrv_crypto_ntlmssp_seal(struct dcesrv_auth *auth, TALLOC_CTX *sig_mem_ctx,
uint8_t *data, size_t length, DATA_BLOB *sig)
{
struct auth_ntlmssp_state *auth_ntlmssp_state = auth->crypto_ctx.private_data;
return ntlmssp_seal_packet(auth_ntlmssp_state->ntlmssp_state, sig_mem_ctx, data, length, sig);
}
/*
sign a packet
*/
static NTSTATUS dcesrv_crypto_ntlmssp_sign(struct dcesrv_auth *auth, TALLOC_CTX *sig_mem_ctx,
const uint8_t *data, size_t length, DATA_BLOB *sig)
{
struct auth_ntlmssp_state *auth_ntlmssp_state = auth->crypto_ctx.private_data;
return ntlmssp_sign_packet(auth_ntlmssp_state->ntlmssp_state, sig_mem_ctx, data, length, sig);
}
/*
check a packet signature
*/
static NTSTATUS dcesrv_crypto_ntlmssp_check_sig(struct dcesrv_auth *auth, TALLOC_CTX *sig_mem_ctx,
const uint8_t *data, size_t length, const DATA_BLOB *sig)
{
struct auth_ntlmssp_state *auth_ntlmssp_state = auth->crypto_ctx.private_data;
return ntlmssp_check_packet(auth_ntlmssp_state->ntlmssp_state, sig_mem_ctx, data, length, sig);
}
/*
unseal a packet
*/
static NTSTATUS dcesrv_crypto_ntlmssp_unseal(struct dcesrv_auth *auth, TALLOC_CTX *sig_mem_ctx,
uint8_t *data, size_t length, DATA_BLOB *sig)
{
struct auth_ntlmssp_state *auth_ntlmssp_state = auth->crypto_ctx.private_data;
return ntlmssp_unseal_packet(auth_ntlmssp_state->ntlmssp_state, sig_mem_ctx, data, length, sig);
}
/*
end crypto state
*/
static void dcesrv_crypto_ntlmssp_end(struct dcesrv_auth *auth)
{
struct auth_ntlmssp_state *auth_ntlmssp_state = auth->crypto_ctx.private_data;
auth->crypto_ctx.private_data = NULL;
auth_ntlmssp_end(&auth_ntlmssp_state);
return;
}
static const struct dcesrv_cyrpto_ops dcesrv_crypto_ntlmssp_ops = {
.name = "ntlmssp",
.auth_type = DCERPC_AUTH_TYPE_NTLMSSP,
.start = dcesrv_crypto_ntlmssp_start,
.update = dcesrv_crypto_ntlmssp_update,
.seal = dcesrv_crypto_ntlmssp_seal,
.sign = dcesrv_crypto_ntlmssp_sign,
.check_sig = dcesrv_crypto_ntlmssp_check_sig,
.unseal = dcesrv_crypto_ntlmssp_unseal,
.end = dcesrv_crypto_ntlmssp_end
};
/*
startup the cryptographic side of an authenticated dcerpc server
*/
NTSTATUS dcesrv_crypto_ntlmssp_get_ops(struct dcesrv_connection *dce_conn,
struct dcesrv_auth *auth)
{
NTSTATUS status = NT_STATUS_OK;
auth->crypto_ctx.ops = &dcesrv_crypto_ntlmssp_ops;
return status;
}
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