source: vendor/3.6.24/source4/winbind/wb_sids2xids.c

/*
   Unix SMB/CIFS implementation.

   Map SIDs to unixids.

   Copyright (C) 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"

struct sids2xids_state {
        struct composite_context *ctx;
        struct wbsrv_service *service;
        struct id_map *ids;
        int count;
};

struct composite_context *wb_sids2xids_send(TALLOC_CTX *mem_ctx,
                                            struct wbsrv_service *service,
                                            unsigned int count, struct id_map *ids)
{
        struct composite_context *result;
        struct sids2xids_state *state;
        struct id_map **pointer_array;
        unsigned int i;

        DEBUG(5, ("wb_sids2xids_send called\n"));

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

        state = talloc(result, struct sids2xids_state);
        if (composite_nomem(state, result)) return result;

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

        /* We need to convert between calling conventions here - the
         * values are filled in by reference, so we just need to
         * provide pointers to them */
        pointer_array = talloc_array(state, struct id_map *, count+1);
        if (composite_nomem(pointer_array, result)) return result;

        for (i=0; i < count; i++) {
                pointer_array[i] = &ids[i];
        }
        pointer_array[i] = NULL;

        state->ctx->status = idmap_sids_to_xids(service->idmap_ctx, mem_ctx,
                                                pointer_array);
        if (!composite_is_ok(state->ctx)) return result;

        composite_done(state->ctx);
        return result;
}

NTSTATUS wb_sids2xids_recv(struct composite_context *ctx,
                           struct id_map **ids)
{
        NTSTATUS status = composite_wait(ctx);
        struct sids2xids_state *state = talloc_get_type(ctx->private_data,
                                                        struct sids2xids_state);

        DEBUG(5, ("wb_sids2xids_recv called\n"));

        /* We don't have to mess with pointer_array on the way out, as
         * the results are filled into the pointers the caller
         * supplied */
        *ids = state->ids;

        talloc_free(ctx);
        return status;
}