source: vendor/3.5.9/source4/winbind/wb_gid2sid.c

/*
   Unix SMB/CIFS implementation.

   Command backend for wbinfo -G

   Copyright (C) 2007-2008 Kai Blin

   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_helper.h"
#include "libcli/security/proto.h"
#include "winbind/idmap.h"

struct gid2sid_state {
        struct composite_context *ctx;
        struct wbsrv_service *service;
        struct dom_sid *sid;
};

static void gid2sid_recv_sid(struct composite_context *ctx);

struct composite_context *wb_gid2sid_send(TALLOC_CTX *mem_ctx,
                struct wbsrv_service *service, gid_t gid)
{
        struct composite_context *result, *ctx;
        struct gid2sid_state *state;
        struct unixid *unixid;
        struct id_mapping *ids;

        DEBUG(5, ("wb_gid2sid_send called\n"));

        result = composite_create(mem_ctx, service->task->event_ctx);
        if (!result) return NULL;

        state = talloc(result, struct gid2sid_state);
        if (composite_nomem(state, result)) return result;

        state->ctx = result;
        result->private_data = state;
        state->service = service;

        unixid = talloc(result, struct unixid);
        if (composite_nomem(unixid, result)) return result;
        unixid->id = gid;
        unixid->type = ID_TYPE_GID;

        ids = talloc(result, struct id_mapping);
        if (composite_nomem(ids, result)) return result;
        ids->unixid = unixid;
        ids->sid = NULL;

        ctx = wb_xids2sids_send(result, service, 1, ids);
        if (composite_nomem(ctx, result)) return result;

        composite_continue(result, ctx, gid2sid_recv_sid, state);
        return result;
}

static void gid2sid_recv_sid(struct composite_context *ctx)
{
        struct gid2sid_state *state = talloc_get_type(ctx->async.private_data,
                                                      struct gid2sid_state);
        struct id_mapping *ids = NULL;
        state->ctx->status = wb_xids2sids_recv(ctx, &ids);
        if (!composite_is_ok(state->ctx)) return;

        if (!NT_STATUS_IS_OK(ids->status)) {
                composite_error(state->ctx, ids->status);
                return;
        }

        state->sid = ids->sid;
        composite_done(state->ctx);
}

NTSTATUS wb_gid2sid_recv(struct composite_context *ctx, TALLOC_CTX *mem_ctx,
                struct dom_sid **sid)
{
        NTSTATUS status = composite_wait(ctx);

        DEBUG(5, ("wb_gid2sid_recv called.\n"));

        if (NT_STATUS_IS_OK(status)) {
                struct gid2sid_state *state =
                        talloc_get_type(ctx->private_data,
                                struct gid2sid_state);
                *sid = talloc_steal(mem_ctx, state->sid);
        }
        talloc_free(ctx);
        return status;
}