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/*
Unix SMB/CIFS implementation.
Command backend for wbinfo --getdcname
Copyright (C) Volker Lendecke 2005
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 "libcli/composite/composite.h"
#include "winbind/wb_server.h"
#include "smbd/service_task.h"
#include "librpc/gen_ndr/ndr_netlogon_c.h"
struct cmd_getdcname_state {
struct composite_context *ctx;
const char *domain_name;
struct netr_GetAnyDCName g;
};
static void getdcname_recv_domain(struct composite_context *ctx);
static void getdcname_recv_dcname(struct tevent_req *subreq);
struct composite_context *wb_cmd_getdcname_send(TALLOC_CTX *mem_ctx,
struct wbsrv_service *service,
const char *domain_name)
{
struct composite_context *result, *ctx;
struct cmd_getdcname_state *state;
result = composite_create(mem_ctx, service->task->event_ctx);
if (result == NULL) goto failed;
state = talloc(result, struct cmd_getdcname_state);
if (state == NULL) goto failed;
state->ctx = result;
result->private_data = state;
state->domain_name = talloc_strdup(state, domain_name);
if (state->domain_name == NULL) goto failed;
ctx = wb_sid2domain_send(state, service, service->primary_sid);
if (ctx == NULL) goto failed;
ctx->async.fn = getdcname_recv_domain;
ctx->async.private_data = state;
return result;
failed:
talloc_free(result);
return NULL;
}
static void getdcname_recv_domain(struct composite_context *ctx)
{
struct cmd_getdcname_state *state =
talloc_get_type(ctx->async.private_data,
struct cmd_getdcname_state);
struct wbsrv_domain *domain;
struct tevent_req *subreq;
state->ctx->status = wb_sid2domain_recv(ctx, &domain);
if (!composite_is_ok(state->ctx)) return;
state->g.in.logon_server = talloc_asprintf(
state, "\\\\%s",
dcerpc_server_name(domain->netlogon_pipe));
state->g.in.domainname = state->domain_name;
state->g.out.dcname = talloc(state, const char *);
subreq = dcerpc_netr_GetAnyDCName_r_send(state,
state->ctx->event_ctx,
domain->netlogon_pipe->binding_handle,
&state->g);
if (composite_nomem(subreq, state->ctx)) return;
tevent_req_set_callback(subreq, getdcname_recv_dcname, state);
}
static void getdcname_recv_dcname(struct tevent_req *subreq)
{
struct cmd_getdcname_state *state =
tevent_req_callback_data(subreq,
struct cmd_getdcname_state);
state->ctx->status = dcerpc_netr_GetAnyDCName_r_recv(subreq, state);
TALLOC_FREE(subreq);
if (!composite_is_ok(state->ctx)) return;
state->ctx->status = werror_to_ntstatus(state->g.out.result);
if (!composite_is_ok(state->ctx)) return;
composite_done(state->ctx);
}
NTSTATUS wb_cmd_getdcname_recv(struct composite_context *c,
TALLOC_CTX *mem_ctx,
const char **dcname)
{
struct cmd_getdcname_state *state =
talloc_get_type(c->private_data, struct cmd_getdcname_state);
NTSTATUS status = composite_wait(c);
if (NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_DOMAIN)) {
/* special case: queried DC is PDC */
state->g.out.dcname = &state->g.in.logon_server;
status = NT_STATUS_OK;
}
if (NT_STATUS_IS_OK(status)) {
const char *p = *(state->g.out.dcname);
if (*p == '\\') p += 1;
if (*p == '\\') p += 1;
*dcname = talloc_strdup(mem_ctx, p);
if (*dcname == NULL) {
status = NT_STATUS_NO_MEMORY;
}
}
talloc_free(state);
return status;
}
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