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/*
Unix SMB/Netbios implementation.
Version 3.0
handle NLTMSSP, server side
Copyright (C) Andrew Tridgell 2001
Copyright (C) Andrew Bartlett 2001-2003,2011
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.h"
#include "../auth/ntlmssp/ntlmssp.h"
#include "ntlmssp_wrap.h"
#include "../librpc/gen_ndr/netlogon.h"
#include "../librpc/gen_ndr/dcerpc.h"
#include "../lib/tsocket/tsocket.h"
#include "auth/gensec/gensec.h"
#include "librpc/rpc/dcerpc.h"
#include "lib/param/param.h"
NTSTATUS auth_generic_prepare(const struct tsocket_address *remote_address,
struct auth_generic_state **auth_ntlmssp_state)
{
struct auth_context *auth_context;
struct auth_generic_state *ans;
NTSTATUS nt_status;
ans = talloc_zero(NULL, struct auth_generic_state);
if (!ans) {
DEBUG(0,("auth_ntlmssp_start: talloc failed!\n"));
return NT_STATUS_NO_MEMORY;
}
nt_status = make_auth_context_subsystem(talloc_tos(), &auth_context);
if (!NT_STATUS_IS_OK(nt_status)) {
TALLOC_FREE(ans);
return nt_status;
}
ans->auth_context = talloc_steal(ans, auth_context);
if (auth_context->prepare_gensec) {
nt_status = auth_context->prepare_gensec(ans,
&ans->gensec_security);
if (!NT_STATUS_IS_OK(nt_status)) {
TALLOC_FREE(ans);
return nt_status;
}
*auth_ntlmssp_state = ans;
return NT_STATUS_OK;
} else {
struct gensec_settings *gensec_settings;
struct loadparm_context *lp_ctx;
lp_ctx = loadparm_init_s3(ans, loadparm_s3_context());
if (lp_ctx == NULL) {
DEBUG(10, ("loadparm_init_s3 failed\n"));
TALLOC_FREE(ans);
return NT_STATUS_INVALID_SERVER_STATE;
}
gensec_settings = lpcfg_gensec_settings(ans, lp_ctx);
if (lp_ctx == NULL) {
DEBUG(10, ("lpcfg_gensec_settings failed\n"));
TALLOC_FREE(ans);
return NT_STATUS_NO_MEMORY;
}
nt_status = gensec_server_start(ans, gensec_settings,
NULL, &ans->gensec_security);
if (!NT_STATUS_IS_OK(nt_status)) {
TALLOC_FREE(ans);
return nt_status;
}
talloc_unlink(ans, lp_ctx);
talloc_unlink(ans, gensec_settings);
}
nt_status = gensec_set_remote_address(ans->gensec_security,
remote_address);
if (!NT_STATUS_IS_OK(nt_status)) {
TALLOC_FREE(ans);
return nt_status;
}
*auth_ntlmssp_state = ans;
return NT_STATUS_OK;
}
NTSTATUS auth_generic_start(struct auth_generic_state *auth_ntlmssp_state, const char *oid)
{
struct gensec_ntlmssp_context *gensec_ntlmssp;
NTSTATUS status;
if (auth_ntlmssp_state->auth_context->gensec_start_mech_by_oid) {
return auth_ntlmssp_state->auth_context->gensec_start_mech_by_oid(
auth_ntlmssp_state->gensec_security, oid);
}
if (strcmp(oid, GENSEC_OID_NTLMSSP) != 0) {
return NT_STATUS_NOT_IMPLEMENTED;
}
status = gensec_start_mech_by_ops(auth_ntlmssp_state->gensec_security,
&gensec_ntlmssp3_server_ops);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
gensec_ntlmssp =
talloc_get_type_abort(auth_ntlmssp_state->gensec_security->private_data,
struct gensec_ntlmssp_context);
gensec_ntlmssp->auth_context = talloc_move(gensec_ntlmssp, &auth_ntlmssp_state->auth_context);
return NT_STATUS_OK;
}
NTSTATUS auth_generic_authtype_start(struct auth_generic_state *auth_ntlmssp_state,
uint8_t auth_type, uint8_t auth_level)
{
struct gensec_ntlmssp_context *gensec_ntlmssp;
NTSTATUS status;
if (auth_ntlmssp_state->auth_context->gensec_start_mech_by_authtype) {
return auth_ntlmssp_state->auth_context->gensec_start_mech_by_authtype(
auth_ntlmssp_state->gensec_security,
auth_type, auth_level);
}
if (auth_type != DCERPC_AUTH_TYPE_NTLMSSP) {
/* The caller will then free the auth_ntlmssp_state,
* undoing what was done in auth_generic_prepare().
*
* We can't do that logic here, as
* auth_ntlmssp_want_feature() may have been called in
* between.
*/
return NT_STATUS_NOT_IMPLEMENTED;
}
gensec_want_feature(auth_ntlmssp_state->gensec_security,
GENSEC_FEATURE_DCE_STYLE);
gensec_want_feature(auth_ntlmssp_state->gensec_security,
GENSEC_FEATURE_ASYNC_REPLIES);
if (auth_level == DCERPC_AUTH_LEVEL_INTEGRITY) {
gensec_want_feature(auth_ntlmssp_state->gensec_security,
GENSEC_FEATURE_SIGN);
} else if (auth_level == DCERPC_AUTH_LEVEL_PRIVACY) {
gensec_want_feature(auth_ntlmssp_state->gensec_security,
GENSEC_FEATURE_SIGN);
gensec_want_feature(auth_ntlmssp_state->gensec_security,
GENSEC_FEATURE_SEAL);
} else if (auth_level == DCERPC_AUTH_LEVEL_CONNECT) {
/* Default features */
} else {
DEBUG(2,("auth_level %d not supported in DCE/RPC authentication\n",
auth_level));
return NT_STATUS_INVALID_PARAMETER;
}
status = gensec_start_mech_by_ops(auth_ntlmssp_state->gensec_security,
&gensec_ntlmssp3_server_ops);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
gensec_ntlmssp =
talloc_get_type_abort(auth_ntlmssp_state->gensec_security->private_data,
struct gensec_ntlmssp_context);
gensec_ntlmssp->auth_context = talloc_move(gensec_ntlmssp, &auth_ntlmssp_state->auth_context);
return NT_STATUS_OK;
}
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