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/*
Unix SMB/CIFS implementation.
Find and init a domain struct for a SID
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 "winbind/wb_async_helpers.h"
#include "libcli/security/security.h"
#include "lib/util/dlinklist.h"
static struct wbsrv_domain *find_domain_from_sid(struct wbsrv_service *service,
const struct dom_sid *sid)
{
struct wbsrv_domain *domain;
for (domain = service->domains; domain!=NULL; domain = domain->next) {
if (dom_sid_equal(domain->info->sid, sid)) {
break;
}
if (dom_sid_in_domain(domain->info->sid, sid)) {
break;
}
}
return domain;
}
struct sid2domain_state {
struct composite_context *ctx;
struct wbsrv_service *service;
struct dom_sid *sid;
struct wbsrv_domain *domain;
};
static void sid2domain_recv_dom_info(struct composite_context *ctx);
static void sid2domain_recv_name(struct composite_context *ctx);
static void sid2domain_recv_trusted_dom_info(struct composite_context *ctx);
static void sid2domain_recv_init(struct composite_context *ctx);
struct composite_context *wb_sid2domain_send(TALLOC_CTX *mem_ctx,
struct wbsrv_service *service,
const struct dom_sid *sid)
{
struct composite_context *result, *ctx;
struct sid2domain_state *state;
result = composite_create(mem_ctx, service->task->event_ctx);
if (result == NULL) goto failed;
state = talloc(result, struct sid2domain_state);
if (state == NULL) goto failed;
state->ctx = result;
result->private_data = state;
state->service = service;
state->sid = dom_sid_dup(state, sid);
if (state->sid == NULL) goto failed;
state->domain = find_domain_from_sid(service, sid);
if (state->domain != NULL) {
result->status = NT_STATUS_OK;
composite_done(result);
return result;
}
if (dom_sid_equal(service->primary_sid, sid) ||
dom_sid_in_domain(service->primary_sid, sid)) {
ctx = wb_get_dom_info_send(state, service, lp_workgroup(),
service->primary_sid);
if (ctx == NULL) goto failed;
ctx->async.fn = sid2domain_recv_dom_info;
ctx->async.private_data = state;
return result;
}
ctx = wb_cmd_lookupsid_send(state, service, state->sid);
if (ctx == NULL) goto failed;
composite_continue(result, ctx, sid2domain_recv_name, state);
return result;
failed:
talloc_free(result);
return NULL;
}
static void sid2domain_recv_dom_info(struct composite_context *ctx)
{
struct sid2domain_state *state =
talloc_get_type(ctx->async.private_data,
struct sid2domain_state);
struct wb_dom_info *info;
state->ctx->status = wb_get_dom_info_recv(ctx, state, &info);
if (!composite_is_ok(state->ctx)) return;
ctx = wb_init_domain_send(state, state->service, info);
composite_continue(state->ctx, ctx, sid2domain_recv_init, state);
}
static void sid2domain_recv_name(struct composite_context *ctx)
{
struct sid2domain_state *state =
talloc_get_type(ctx->async.private_data,
struct sid2domain_state);
struct wb_sid_object *name;
state->ctx->status = wb_cmd_lookupsid_recv(ctx, state, &name);
if (!composite_is_ok(state->ctx)) return;
if (name->type == SID_NAME_UNKNOWN) {
composite_error(state->ctx, NT_STATUS_NO_SUCH_DOMAIN);
return;
}
if (name->type != SID_NAME_DOMAIN) {
state->sid->num_auths -= 1;
}
ctx = wb_trusted_dom_info_send(state, state->service, name->domain,
state->sid);
composite_continue(state->ctx, ctx, sid2domain_recv_trusted_dom_info,
state);
}
static void sid2domain_recv_trusted_dom_info(struct composite_context *ctx)
{
struct sid2domain_state *state =
talloc_get_type(ctx->async.private_data,
struct sid2domain_state);
struct wb_dom_info *info;
state->ctx->status = wb_trusted_dom_info_recv(ctx, state, &info);
if (!composite_is_ok(state->ctx)) return;
ctx = wb_init_domain_send(state, state->service, info);
composite_continue(state->ctx, ctx, sid2domain_recv_init, state);
}
static void sid2domain_recv_init(struct composite_context *ctx)
{
struct sid2domain_state *state =
talloc_get_type(ctx->async.private_data,
struct sid2domain_state);
struct wbsrv_domain *existing;
state->ctx->status = wb_init_domain_recv(ctx, state,
&state->domain);
if (!composite_is_ok(state->ctx)) {
DEBUG(10, ("Could not init domain\n"));
return;
}
existing = find_domain_from_sid(state->service, state->sid);
if (existing != NULL) {
DEBUG(5, ("Initialized domain twice, dropping second one\n"));
talloc_free(state->domain);
state->domain = existing;
}
talloc_steal(state->service, state->domain);
DLIST_ADD(state->service->domains, state->domain);
composite_done(state->ctx);
}
NTSTATUS wb_sid2domain_recv(struct composite_context *ctx,
struct wbsrv_domain **result)
{
NTSTATUS status = composite_wait(ctx);
if (NT_STATUS_IS_OK(status)) {
struct sid2domain_state *state =
talloc_get_type(ctx->private_data,
struct sid2domain_state);
*result = state->domain;
}
talloc_free(ctx);
return status;
}
NTSTATUS wb_sid2domain(TALLOC_CTX *mem_ctx, struct wbsrv_service *service,
const struct dom_sid *sid,
struct wbsrv_domain **result)
{
struct composite_context *c = wb_sid2domain_send(mem_ctx, service,
sid);
return wb_sid2domain_recv(c, result);
}
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