curl/tests/libtest/sethostname.c

/***************************************************************************
 *                                  _   _ ____  _
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 *                             / __| | | | |_) | |
 *                            | (__| |_| |  _ <| |___
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 *
 * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
 *
 * This software is licensed as described in the file COPYING, which
 * you should have received as part of this distribution. The terms
 * are also available at https://curl.se/docs/copyright.html.
 *
 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
 * copies of the Software, and permit persons to whom the Software is
 * furnished to do so, under the terms of the COPYING file.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ***************************************************************************/
#include "curl_setup.h"

#include "sethostname.h"

/*
 * we force our own host name, in order to make some tests machine independent
 */

int gethostname(char *name, GETHOSTNAME_TYPE_ARG2 namelen)
{
  const char *force_hostname = getenv("CURL_GETHOSTNAME");
  if(force_hostname) {
    strncpy(name, force_hostname, namelen);
    name[namelen-1] = '\0';
    return 0;
  }

  /* LD_PRELOAD used, but no hostname set, we'll just return a failure */
  return -1;
}