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/*
NLTMSSP wrappers
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/ntlmssp/ntlmssp.h"
#include "ntlmssp_wrap.h"
#include "auth/gensec/gensec.h"
#include "auth/credentials/credentials.h"
#include "librpc/rpc/dcerpc.h"
#include "lib/param/param.h"
NTSTATUS auth_ntlmssp_set_username(struct auth_ntlmssp_state *ans,
const char *user)
{
cli_credentials_set_username(ans->credentials, user, CRED_SPECIFIED);
return NT_STATUS_OK;
}
NTSTATUS auth_ntlmssp_set_domain(struct auth_ntlmssp_state *ans,
const char *domain)
{
cli_credentials_set_domain(ans->credentials, domain, CRED_SPECIFIED);
return NT_STATUS_OK;
}
NTSTATUS auth_ntlmssp_set_password(struct auth_ntlmssp_state *ans,
const char *password)
{
cli_credentials_set_password(ans->credentials, password, CRED_SPECIFIED);
return NT_STATUS_OK;
}
static NTSTATUS gensec_ntlmssp3_client_update(struct gensec_security *gensec_security,
TALLOC_CTX *out_mem_ctx,
struct tevent_context *ev,
const DATA_BLOB request,
DATA_BLOB *reply)
{
NTSTATUS status;
struct gensec_ntlmssp_context *gensec_ntlmssp =
talloc_get_type_abort(gensec_security->private_data,
struct gensec_ntlmssp_context);
status = ntlmssp_update(gensec_ntlmssp->ntlmssp_state, request, reply);
if (NT_STATUS_IS_OK(status) ||
NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
talloc_steal(out_mem_ctx, reply->data);
}
return status;
}
static NTSTATUS gensec_ntlmssp3_client_start(struct gensec_security *gensec_security)
{
NTSTATUS nt_status;
struct gensec_ntlmssp_context *gensec_ntlmssp;
const char *user, *domain;
const char *password;
nt_status = gensec_ntlmssp_start(gensec_security);
NT_STATUS_NOT_OK_RETURN(nt_status);
gensec_ntlmssp =
talloc_get_type_abort(gensec_security->private_data,
struct gensec_ntlmssp_context);
nt_status = ntlmssp_client_start(gensec_ntlmssp,
lp_netbios_name(), lp_workgroup(),
lp_client_ntlmv2_auth(), &gensec_ntlmssp->ntlmssp_state);
if (!NT_STATUS_IS_OK(nt_status)) {
return nt_status;
}
cli_credentials_get_ntlm_username_domain(gensec_security->credentials, gensec_ntlmssp, &user, &domain);
if (!user || !domain) {
return NT_STATUS_NO_MEMORY;
}
nt_status = ntlmssp_set_username(gensec_ntlmssp->ntlmssp_state, user);
if (!NT_STATUS_IS_OK(nt_status)) {
return nt_status;
}
nt_status = ntlmssp_set_domain(gensec_ntlmssp->ntlmssp_state, domain);
if (!NT_STATUS_IS_OK(nt_status)) {
return nt_status;
}
password = cli_credentials_get_password(gensec_security->credentials);
if (!password) {
return NT_STATUS_NO_MEMORY;
}
nt_status = ntlmssp_set_password(gensec_ntlmssp->ntlmssp_state, password);
if (!NT_STATUS_IS_OK(nt_status)) {
return nt_status;
}
if (gensec_ntlmssp->gensec_security->want_features & GENSEC_FEATURE_SESSION_KEY) {
gensec_ntlmssp->ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
}
if (gensec_ntlmssp->gensec_security->want_features & GENSEC_FEATURE_SIGN) {
gensec_ntlmssp->ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
}
if (gensec_ntlmssp->gensec_security->want_features & GENSEC_FEATURE_SEAL) {
gensec_ntlmssp->ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
gensec_ntlmssp->ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SEAL;
}
return NT_STATUS_OK;
}
static const char *gensec_ntlmssp3_client_oids[] = {
GENSEC_OID_NTLMSSP,
NULL
};
static const struct gensec_security_ops gensec_ntlmssp3_client_ops = {
.name = "ntlmssp3_client",
.sasl_name = GENSEC_SASL_NAME_NTLMSSP, /* "NTLM" */
.auth_type = DCERPC_AUTH_TYPE_NTLMSSP,
.oid = gensec_ntlmssp3_client_oids,
.client_start = gensec_ntlmssp3_client_start,
.magic = gensec_ntlmssp_magic,
.update = gensec_ntlmssp3_client_update,
.sig_size = gensec_ntlmssp_sig_size,
.sign_packet = gensec_ntlmssp_sign_packet,
.check_packet = gensec_ntlmssp_check_packet,
.seal_packet = gensec_ntlmssp_seal_packet,
.unseal_packet = gensec_ntlmssp_unseal_packet,
.wrap = gensec_ntlmssp_wrap,
.unwrap = gensec_ntlmssp_unwrap,
.session_key = gensec_ntlmssp_session_key,
.have_feature = gensec_ntlmssp_have_feature,
.enabled = true,
.priority = GENSEC_NTLMSSP
};
NTSTATUS auth_ntlmssp_client_prepare(TALLOC_CTX *mem_ctx, struct auth_ntlmssp_state **auth_ntlmssp_state)
{
struct auth_ntlmssp_state *ans;
NTSTATUS nt_status;
struct gensec_settings *gensec_settings;
struct loadparm_context *lp_ctx;
ans = talloc_zero(mem_ctx, struct auth_ntlmssp_state);
if (!ans) {
DEBUG(0,("auth_ntlmssp_start: talloc failed!\n"));
return NT_STATUS_NO_MEMORY;
}
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_client_start(ans, &ans->gensec_security, gensec_settings);
if (!NT_STATUS_IS_OK(nt_status)) {
TALLOC_FREE(ans);
return nt_status;
}
ans->credentials = cli_credentials_init(ans);
if (!ans->credentials) {
TALLOC_FREE(ans);
return NT_STATUS_NO_MEMORY;
}
cli_credentials_guess(ans->credentials, lp_ctx);
talloc_unlink(ans, lp_ctx);
talloc_unlink(ans, gensec_settings);
*auth_ntlmssp_state = ans;
return NT_STATUS_OK;
}
NTSTATUS auth_ntlmssp_client_start(struct auth_ntlmssp_state *ans)
{
NTSTATUS status;
/* Transfer the credentials to gensec */
status = gensec_set_credentials(ans->gensec_security, ans->credentials);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("Failed to set GENSEC credentials: %s\n",
nt_errstr(status)));
return status;
}
talloc_unlink(ans, ans->credentials);
ans->credentials = NULL;
status = gensec_start_mech_by_ops(ans->gensec_security,
&gensec_ntlmssp3_client_ops);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
return NT_STATUS_OK;
}
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