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/*
Unix SMB/CIFS implementation.
Command backend for wbinfo --user-sids
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_samr_c.h"
#include "libcli/security/security.h"
/* Calculate the token in two steps: Go the user's originating domain, ask for
* the user's domain groups. Then with the resulting list of sids go to our
* own domain to expand the aliases aka domain local groups. */
struct cmd_usersids_state {
struct composite_context *ctx;
struct wbsrv_service *service;
struct dom_sid *user_sid;
uint32_t num_domgroups;
struct dom_sid **domgroups;
struct lsa_SidArray lsa_sids;
struct samr_Ids rids;
struct samr_GetAliasMembership r;
uint32_t num_sids;
struct dom_sid **sids;
};
static void usersids_recv_domgroups(struct composite_context *ctx);
static void usersids_recv_domain(struct composite_context *ctx);
static void usersids_recv_aliases(struct tevent_req *subreq);
struct composite_context *wb_cmd_usersids_send(TALLOC_CTX *mem_ctx,
struct wbsrv_service *service,
const struct dom_sid *sid)
{
struct composite_context *result, *ctx;
struct cmd_usersids_state *state;
result = composite_create(mem_ctx, service->task->event_ctx);
if (result == NULL) goto failed;
state = talloc(result, struct cmd_usersids_state);
if (state == NULL) goto failed;
state->ctx = result;
result->private_data = state;
state->service = service;
state->user_sid = dom_sid_dup(state, sid);
if (state->user_sid == NULL) goto failed;
ctx = wb_cmd_userdomgroups_send(state, service, sid);
if (ctx == NULL) goto failed;
ctx->async.fn = usersids_recv_domgroups;
ctx->async.private_data = state;
return result;
failed:
talloc_free(result);
return NULL;
}
static void usersids_recv_domgroups(struct composite_context *ctx)
{
struct cmd_usersids_state *state =
talloc_get_type(ctx->async.private_data,
struct cmd_usersids_state);
state->ctx->status = wb_cmd_userdomgroups_recv(ctx, state,
&state->num_domgroups,
&state->domgroups);
if (!composite_is_ok(state->ctx)) return;
ctx = wb_sid2domain_send(state, state->service,
state->service->primary_sid);
composite_continue(state->ctx, ctx, usersids_recv_domain, state);
}
static void usersids_recv_domain(struct composite_context *ctx)
{
struct cmd_usersids_state *state =
talloc_get_type(ctx->async.private_data,
struct cmd_usersids_state);
struct tevent_req *subreq;
struct wbsrv_domain *domain;
uint32_t i;
state->ctx->status = wb_sid2domain_recv(ctx, &domain);
if (!composite_is_ok(state->ctx)) return;
state->lsa_sids.num_sids = state->num_domgroups+1;
state->lsa_sids.sids = talloc_array(state, struct lsa_SidPtr,
state->lsa_sids.num_sids);
if (composite_nomem(state->lsa_sids.sids, state->ctx)) return;
state->lsa_sids.sids[0].sid = state->user_sid;
for (i=0; i<state->num_domgroups; i++) {
state->lsa_sids.sids[i+1].sid = state->domgroups[i];
}
state->rids.count = 0;
state->rids.ids = NULL;
state->r.in.domain_handle = &domain->libnet_ctx->samr.handle;
state->r.in.sids = &state->lsa_sids;
state->r.out.rids = &state->rids;
subreq = dcerpc_samr_GetAliasMembership_r_send(state,
state->ctx->event_ctx,
domain->libnet_ctx->samr.pipe->binding_handle,
&state->r);
if (composite_nomem(subreq, state->ctx)) return;
tevent_req_set_callback(subreq, usersids_recv_aliases, state);
}
static void usersids_recv_aliases(struct tevent_req *subreq)
{
struct cmd_usersids_state *state =
tevent_req_callback_data(subreq,
struct cmd_usersids_state);
uint32_t i;
state->ctx->status = dcerpc_samr_GetAliasMembership_r_recv(subreq, state);
TALLOC_FREE(subreq);
if (!composite_is_ok(state->ctx)) return;
state->ctx->status = state->r.out.result;
if (!composite_is_ok(state->ctx)) return;
state->num_sids = 1 + state->num_domgroups + state->r.out.rids->count;
state->sids = talloc_array(state, struct dom_sid *, state->num_sids);
if (composite_nomem(state->sids, state->ctx)) return;
state->sids[0] = talloc_steal(state->sids, state->user_sid);
for (i=0; i<state->num_domgroups; i++) {
state->sids[1+i] =
talloc_steal(state->sids, state->domgroups[i]);
}
for (i=0; i<state->r.out.rids->count; i++) {
state->sids[1+state->num_domgroups+i] = dom_sid_add_rid(
state->sids, state->service->primary_sid,
state->r.out.rids->ids[i]);
if (composite_nomem(state->sids[1+state->num_domgroups+i],
state->ctx)) return;
}
composite_done(state->ctx);
}
NTSTATUS wb_cmd_usersids_recv(struct composite_context *ctx,
TALLOC_CTX *mem_ctx,
uint32_t *num_sids, struct dom_sid ***sids)
{
NTSTATUS status = composite_wait(ctx);
if (NT_STATUS_IS_OK(status)) {
struct cmd_usersids_state *state =
talloc_get_type(ctx->private_data,
struct cmd_usersids_state);
*num_sids = state->num_sids;
*sids = talloc_steal(mem_ctx, state->sids);
}
talloc_free(ctx);
return status;
}
NTSTATUS wb_cmd_usersids(TALLOC_CTX *mem_ctx, struct wbsrv_service *service,
const struct dom_sid *sid,
uint32_t *num_sids, struct dom_sid ***sids)
{
struct composite_context *c =
wb_cmd_usersids_send(mem_ctx, service, sid);
return wb_cmd_usersids_recv(c, mem_ctx, num_sids, sids);
}
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