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/*
Unix SMB/CIFS implementation.
LDAP server
Copyright (C) Stefan 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.
*/
#include "includes.h"
#include "ldap_server/ldap_server.h"
#include "auth/auth.h"
#include "libcli/ldap/ldap.h"
#include "smbd/service_stream.h"
static NTSTATUS ldapsrv_BindSimple(struct ldapsrv_call *call)
{
struct ldap_BindRequest *req = &call->request->r.BindRequest;
struct ldapsrv_reply *reply;
struct ldap_BindResponse *resp;
DEBUG(10, ("BindSimple dn: %s\n",req->dn));
/* When we add authentication here, we also need to handle telling the backends */
reply = ldapsrv_init_reply(call, LDAP_TAG_BindResponse);
if (!reply) {
return NT_STATUS_NO_MEMORY;
}
resp = &reply->msg->r.BindResponse;
resp->response.resultcode = 0;
resp->response.dn = NULL;
resp->response.errormessage = NULL;
resp->response.referral = NULL;
resp->SASL.secblob = data_blob(NULL, 0);
ldapsrv_queue_reply(call, reply);
return NT_STATUS_OK;
}
static NTSTATUS ldapsrv_BindSASL(struct ldapsrv_call *call)
{
struct ldap_BindRequest *req = &call->request->r.BindRequest;
struct ldapsrv_reply *reply;
struct ldap_BindResponse *resp;
struct ldapsrv_connection *conn;
int result;
const char *errstr;
NTSTATUS status = NT_STATUS_OK;
DEBUG(10, ("BindSASL dn: %s\n",req->dn));
if (!call->conn->gensec) {
struct cli_credentials *server_credentials;
call->conn->session_info = NULL;
status = gensec_server_start(call->conn, &call->conn->gensec,
call->conn->connection->event.ctx);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("Failed to start GENSEC server code: %s\n", nt_errstr(status)));
return status;
}
gensec_set_target_service(call->conn->gensec, "ldap");
server_credentials
= cli_credentials_init(call);
if (!server_credentials) {
DEBUG(1, ("Failed to init server credentials\n"));
return NT_STATUS_NO_MEMORY;
}
cli_credentials_set_conf(server_credentials);
status = cli_credentials_set_machine_account(server_credentials);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("Failed to obtain server credentials, perhaps a standalone server?: %s\n", nt_errstr(status)));
talloc_free(server_credentials);
server_credentials = NULL;
}
gensec_set_credentials(call->conn->gensec, server_credentials);
gensec_want_feature(call->conn->gensec, GENSEC_FEATURE_SIGN);
gensec_want_feature(call->conn->gensec, GENSEC_FEATURE_SEAL);
gensec_want_feature(call->conn->gensec, GENSEC_FEATURE_ASYNC_REPLIES);
status = gensec_start_mech_by_sasl_name(call->conn->gensec, req->creds.SASL.mechanism);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("Failed to start GENSEC SASL[%s] server code: %s\n",
req->creds.SASL.mechanism, nt_errstr(status)));
}
}
reply = ldapsrv_init_reply(call, LDAP_TAG_BindResponse);
if (!reply) {
return NT_STATUS_NO_MEMORY;
}
resp = &reply->msg->r.BindResponse;
conn = call->conn;
if (NT_STATUS_IS_OK(status)) {
status = gensec_update(call->conn->gensec, reply,
req->creds.SASL.secblob, &resp->SASL.secblob);
}
if (NT_STATUS_EQUAL(NT_STATUS_MORE_PROCESSING_REQUIRED, status)) {
result = LDAP_SASL_BIND_IN_PROGRESS;
errstr = NULL;
} else if (NT_STATUS_IS_OK(status)) {
struct ldapsrv_partition *part;
struct auth_session_info *old_session_info;
result = LDAP_SUCCESS;
errstr = NULL;
if (gensec_have_feature(call->conn->gensec, GENSEC_FEATURE_SEAL) ||
gensec_have_feature(call->conn->gensec, GENSEC_FEATURE_SIGN)) {
call->conn->enable_wrap = True;
}
old_session_info = call->conn->session_info;
call->conn->session_info = NULL;
status = gensec_session_info(call->conn->gensec, &call->conn->session_info);
if (!NT_STATUS_IS_OK(status)) {
call->conn->session_info = old_session_info;
result = LDAP_OPERATIONS_ERROR;
errstr = talloc_asprintf(reply, "SASL:[%s]: Failed to get session info: %s", req->creds.SASL.mechanism, nt_errstr(status));
} else {
talloc_free(old_session_info);
for (part = call->conn->partitions; part; part = part->next) {
if (!part->ops->Bind) {
continue;
}
status = part->ops->Bind(part, conn);
if (!NT_STATUS_IS_OK(status)) {
result = LDAP_OPERATIONS_ERROR;
errstr = talloc_asprintf(reply, "SASL:[%s]: Failed to advise partition %s of new credentials: %s", req->creds.SASL.mechanism, part->base_dn, nt_errstr(status));
}
}
}
} else {
status = auth_nt_status_squash(status);
result = LDAP_INVALID_CREDENTIALS;
errstr = talloc_asprintf(reply, "SASL:[%s]: %s", req->creds.SASL.mechanism, nt_errstr(status));
}
resp->response.resultcode = result;
resp->response.dn = NULL;
resp->response.errormessage = errstr;
resp->response.referral = NULL;
ldapsrv_queue_reply(call, reply);
return NT_STATUS_OK;
}
NTSTATUS ldapsrv_BindRequest(struct ldapsrv_call *call)
{
struct ldap_BindRequest *req = &call->request->r.BindRequest;
struct ldapsrv_reply *reply;
struct ldap_BindResponse *resp;
switch (req->mechanism) {
case LDAP_AUTH_MECH_SIMPLE:
return ldapsrv_BindSimple(call);
case LDAP_AUTH_MECH_SASL:
return ldapsrv_BindSASL(call);
}
reply = ldapsrv_init_reply(call, LDAP_TAG_BindResponse);
if (!reply) {
return NT_STATUS_NO_MEMORY;
}
resp = &reply->msg->r.BindResponse;
resp->response.resultcode = 7;
resp->response.dn = NULL;
resp->response.errormessage = talloc_asprintf(reply, "Bad AuthenticationChoice [%d]", req->mechanism);
resp->response.referral = NULL;
resp->SASL.secblob = data_blob(NULL, 0);
ldapsrv_queue_reply(call, reply);
return NT_STATUS_OK;
}
NTSTATUS ldapsrv_UnbindRequest(struct ldapsrv_call *call)
{
DEBUG(10, ("UnbindRequest\n"));
return NT_STATUS_OK;
}
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