/* Editor Settings: expandtabs and use 4 spaces for indentation
 * ex: set softtabstop=4 tabstop=8 expandtab shiftwidth=4: *
 * -*- mode: c, c-basic-offset: 4 -*- */

/*
 * Copyright Likewise Software    2004-2008
 * All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the license, or (at
 * your option) any later version.
 *
 * This library 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 Lesser
 * General Public License for more details.  You should have received a copy
 * of the GNU Lesser General Public License along with this program.  If
 * not, see <http://www.gnu.org/licenses/>.
 *
 * LIKEWISE SOFTWARE MAKES THIS SOFTWARE AVAILABLE UNDER OTHER LICENSING
 * TERMS AS WELL.  IF YOU HAVE ENTERED INTO A SEPARATE LICENSE AGREEMENT
 * WITH LIKEWISE SOFTWARE, THEN YOU MAY ELECT TO USE THE SOFTWARE UNDER THE
 * TERMS OF THAT SOFTWARE LICENSE AGREEMENT INSTEAD OF THE TERMS OF THE GNU
 * LESSER GENERAL PUBLIC LICENSE, NOTWITHSTANDING THE ABOVE NOTICE.  IF YOU
 * HAVE QUESTIONS, OR WISH TO REQUEST A COPY OF THE ALTERNATE LICENSING
 * TERMS OFFERED BY LIKEWISE SOFTWARE, PLEASE CONTACT LIKEWISE SOFTWARE AT
 * license@likewisesoftware.com
 */

#include "includes.h"

DWORD
EVTGetHostname(
    PSTR* ppszHostname
    )
{
    DWORD dwError = 0;
    PSTR  pszHostname = NULL;
    BOOLEAN bDone = FALSE;
    DWORD dwLength = HOST_NAME_MAX + 1;

    dwError = EVTAllocateMemory(
                    dwLength,
                    (PVOID*)&pszHostname);
    BAIL_ON_EVT_ERROR(dwError);

    do
    {
        dwError = 0;

        if (gethostname(pszHostname, dwLength) < 0)
        {
            dwError = errno;

            if (dwError == ENAMETOOLONG)
            {
                DWORD dwLength2 = dwLength + 256;

                dwError = EVTReallocMemory(
                            pszHostname,
                            (PVOID*)&pszHostname,
                            dwLength2);
                BAIL_ON_EVT_ERROR(dwError);

                dwLength = dwLength2;

                continue;
            }
            BAIL_ON_EVT_ERROR(dwError);
        }

        bDone = TRUE;

    } while (!bDone);

    *ppszHostname = pszHostname;

cleanup:

    return dwError;

error:

    EVT_SAFE_FREE_STRING(pszHostname);
    *ppszHostname = NULL;

    goto cleanup;

}