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/* Test of getting user name.
Copyright (C) 2010-2014 Free Software Foundation, Inc.
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/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2010. */
#include <config.h>
#include <unistd.h>
#include "signature.h"
SIGNATURE_CHECK (getlogin_r, int, (char *, size_t));
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "macros.h"
int
main (void)
{
/* Test with a large enough buffer. */
char buf[1024];
int err;
err = getlogin_r (buf, sizeof (buf));
if (err != 0)
{
if (errno == ENOENT)
{
/* This can happen on GNU/Linux. */
fprintf (stderr, "Skipping test: no entry in utmp file.\n");
return 77;
}
/* getlogin_r() fails when stdin is not connected to a tty. */
ASSERT (err == ENOTTY
|| errno == EINVAL /* seen on Linux/SPARC */
|| errno == ENXIO
);
#if !defined __hpux /* On HP-UX 11.11 it fails anyway. */
ASSERT (! isatty (0));
#endif
fprintf (stderr, "Skipping test: stdin is not a tty.\n");
return 77;
}
/* Compare against the value from the environment. */
#if !((defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__)
/* Unix platform */
{
const char *name = getenv ("LOGNAME");
if (name == NULL || name[0] == '\0')
name = getenv ("USER");
if (name != NULL && name[0] != '\0')
ASSERT (strcmp (buf, name) == 0);
}
#endif
#if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
/* Native Windows platform.
Note: This test would fail on Cygwin in an ssh session, because sshd
sets USERNAME=SYSTEM. */
{
const char *name = getenv ("USERNAME");
if (name != NULL && name[0] != '\0')
ASSERT (strcmp (buf, name) == 0);
}
#endif
/* Test with a small buffer. */
{
char smallbuf[1024];
size_t n = strlen (buf);
size_t i;
for (i = 0; i <= n; i++)
{
err = getlogin_r (smallbuf, i);
if (i == 0)
ASSERT (err == ERANGE || err == EINVAL);
else
ASSERT (err == ERANGE);
}
}
/* Test with a huge buffer. */
{
static char hugebuf[70000];
ASSERT (getlogin_r (hugebuf, sizeof (hugebuf)) == 0);
ASSERT (strcmp (hugebuf, buf) == 0);
}
return 0;
}
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