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/*
Unix SMB/CIFS implementation.
Get a struct wb_dom_info for a trusted domain, relying on "our" DC.
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 "libcli/resolve/resolve.h"
#include "libcli/security/security.h"
#include "winbind/wb_server.h"
#include "smbd/service_task.h"
#include "librpc/gen_ndr/ndr_netlogon_c.h"
#include "libcli/libcli.h"
struct trusted_dom_info_state {
struct composite_context *ctx;
struct wbsrv_service *service;
struct wbsrv_domain *my_domain;
struct netr_DsRGetDCName d;
struct netr_GetAnyDCName g;
struct wb_dom_info *info;
};
static void trusted_dom_info_recv_domain(struct composite_context *ctx);
static void trusted_dom_info_recv_dsr(struct tevent_req *subreq);
static void trusted_dom_info_recv_dcname(struct tevent_req *subreq);
static void trusted_dom_info_recv_dcaddr(struct composite_context *ctx);
struct composite_context *wb_trusted_dom_info_send(TALLOC_CTX *mem_ctx,
struct wbsrv_service *service,
const char *domain_name,
const struct dom_sid *sid)
{
struct composite_context *result, *ctx;
struct trusted_dom_info_state *state;
result = composite_create(mem_ctx, service->task->event_ctx);
if (result == NULL) goto failed;
state = talloc(result, struct trusted_dom_info_state);
if (state == NULL) goto failed;
state->ctx = result;
result->private_data = state;
state->info = talloc_zero(state, struct wb_dom_info);
if (state->info == NULL) goto failed;
state->service = service;
state->info->sid = dom_sid_dup(state->info, sid);
if (state->info->sid == NULL) goto failed;
state->info->name = talloc_strdup(state->info, domain_name);
if (state->info->name == NULL) goto failed;
ctx = wb_sid2domain_send(state, service, service->primary_sid);
if (ctx == NULL) goto failed;
ctx->async.fn = trusted_dom_info_recv_domain;
ctx->async.private_data = state;
return result;
failed:
talloc_free(result);
return NULL;
}
static void trusted_dom_info_recv_domain(struct composite_context *ctx)
{
struct trusted_dom_info_state *state =
talloc_get_type(ctx->async.private_data,
struct trusted_dom_info_state);
struct tevent_req *subreq;
state->ctx->status = wb_sid2domain_recv(ctx, &state->my_domain);
if (!composite_is_ok(state->ctx)) return;
state->d.in.server_unc =
talloc_asprintf(state, "\\\\%s",
dcerpc_server_name(state->my_domain->netlogon_pipe));
if (composite_nomem(state->d.in.server_unc,
state->ctx)) return;
state->d.in.domain_name = state->info->name;
state->d.in.domain_guid = NULL;
state->d.in.site_guid = NULL;
state->d.in.flags = DS_RETURN_DNS_NAME;
state->d.out.info = talloc(state, struct netr_DsRGetDCNameInfo *);
if (composite_nomem(state->d.out.info, state->ctx)) return;
subreq = dcerpc_netr_DsRGetDCName_r_send(state,
state->ctx->event_ctx,
state->my_domain->netlogon_pipe->binding_handle,
&state->d);
if (composite_nomem(subreq, state->ctx)) return;
tevent_req_set_callback(subreq, trusted_dom_info_recv_dsr, state);
}
/*
* dcerpc_netr_DsRGetDCName has replied
*/
static void trusted_dom_info_recv_dsr(struct tevent_req *subreq)
{
struct trusted_dom_info_state *state =
tevent_req_callback_data(subreq,
struct trusted_dom_info_state);
state->ctx->status = dcerpc_netr_DsRGetDCName_r_recv(subreq, state);
TALLOC_FREE(subreq);
if (!NT_STATUS_IS_OK(state->ctx->status)) {
DEBUG(9, ("dcerpc_netr_DsRGetDCName_recv returned %s\n",
nt_errstr(state->ctx->status)));
goto fallback;
}
state->ctx->status =
werror_to_ntstatus(state->d.out.result);
if (!NT_STATUS_IS_OK(state->ctx->status)) {
DEBUG(9, ("dsrgetdcname returned %s\n",
nt_errstr(state->ctx->status)));
goto fallback;
}
/* Hey, that was easy! */
state->info->dc = talloc(state->info, struct nbt_dc_name);
state->info->dc->name = talloc_steal(state->info,
(*state->d.out.info)->dc_unc);
if (*state->info->dc->name == '\\') state->info->dc->name++;
if (*state->info->dc->name == '\\') state->info->dc->name++;
state->info->dc->address = talloc_steal(state->info,
(*state->d.out.info)->dc_address);
if (*state->info->dc->address == '\\') state->info->dc->address++;
if (*state->info->dc->address == '\\') state->info->dc->address++;
state->info->dns_name = talloc_steal(state->info,
(*state->d.out.info)->domain_name);
composite_done(state->ctx);
return;
fallback:
state->g.in.logon_server = talloc_asprintf(
state, "\\\\%s",
dcerpc_server_name(state->my_domain->netlogon_pipe));
state->g.in.domainname = state->info->name;
state->g.out.dcname = talloc(state, const char *);
subreq = dcerpc_netr_GetAnyDCName_r_send(state,
state->ctx->event_ctx,
state->my_domain->netlogon_pipe->binding_handle,
&state->g);
if (composite_nomem(subreq, state->ctx)) return;
tevent_req_set_callback(subreq, trusted_dom_info_recv_dcname, state);
}
static void trusted_dom_info_recv_dcname(struct tevent_req *subreq)
{
struct trusted_dom_info_state *state =
tevent_req_callback_data(subreq,
struct trusted_dom_info_state);
struct composite_context *ctx;
struct nbt_name name;
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;
/* Hey, that was easy! */
state->info->dc = talloc(state->info, struct nbt_dc_name);
state->info->dc->name = talloc_steal(state->info,
*(state->g.out.dcname));
if (*state->info->dc->name == '\\') state->info->dc->name++;
if (*state->info->dc->name == '\\') state->info->dc->name++;
make_nbt_name(&name, state->info->dc->name, 0x20);
ctx = resolve_name_send(lpcfg_resolve_context(state->service->task->lp_ctx), state,
&name, state->service->task->event_ctx);
composite_continue(state->ctx, ctx, trusted_dom_info_recv_dcaddr,
state);
}
static void trusted_dom_info_recv_dcaddr(struct composite_context *ctx)
{
struct trusted_dom_info_state *state =
talloc_get_type(ctx->async.private_data,
struct trusted_dom_info_state);
state->ctx->status = resolve_name_recv(ctx, state->info,
&state->info->dc->address);
if (!composite_is_ok(state->ctx)) return;
composite_done(state->ctx);
}
NTSTATUS wb_trusted_dom_info_recv(struct composite_context *ctx,
TALLOC_CTX *mem_ctx,
struct wb_dom_info **result)
{
NTSTATUS status = composite_wait(ctx);
if (NT_STATUS_IS_OK(status)) {
struct trusted_dom_info_state *state =
talloc_get_type(ctx->private_data,
struct trusted_dom_info_state);
*result = talloc_steal(mem_ctx, state->info);
}
talloc_free(ctx);
return status;
}
NTSTATUS wb_trusted_dom_info(TALLOC_CTX *mem_ctx,
struct wbsrv_service *service,
const char *domain_name,
const struct dom_sid *sid,
struct wb_dom_info **result)
{
struct composite_context *ctx =
wb_trusted_dom_info_send(mem_ctx, service, domain_name, sid);
return wb_trusted_dom_info_recv(ctx, mem_ctx, result);
}
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