tests/test-getlogin.h

   1 /* Test of getting user name.
   2    Copyright (C) 2010-2020 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Bruno Haible and Paul Eggert.  */
  18
  19 #include <errno.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <unistd.h>
  24 #if !(defined _WIN32 && !defined __CYGWIN__)
  25 # include <pwd.h>
  26 #endif
  27
  28 #include <sys/stat.h>
  29 #include <sys/types.h>
  30
  31 #include "macros.h"
  32
  33 static void
  34 test_getlogin_result (const char *buf, int err)
  35 {
  36   if (err != 0)
  37     {
  38       if (err == ENOENT)
  39         {
  40           /* This can happen on GNU/Linux.  */
  41           fprintf (stderr, "Skipping test: no entry in utmp file.\n");
  42           exit (77);
  43         }
  44
  45       /* It fails when stdin is not connected to a tty.  */
  46       ASSERT (err == ENOTTY
  47               || err == EINVAL /* seen on Linux/SPARC */
  48               || err == ENXIO
  49              );
  50 #if !defined __hpux /* On HP-UX 11.11 it fails anyway.  */
  51       ASSERT (! isatty (0));
  52 #endif
  53       fprintf (stderr, "Skipping test: stdin is not a tty.\n");
  54       exit (77);
  55     }
  56
  57   /* Compare against the value from the environment.  */
  58 #if !(defined _WIN32 && !defined __CYGWIN__)
  59   /* Unix platform */
  60   {
  61     struct stat stat_buf;
  62     struct passwd *pwd;
  63
  64     if (!isatty (STDIN_FILENO))
  65       {
  66          fprintf (stderr, "Skipping test: stdin is not a tty.\n");
  67          exit (77);
  68       }
  69
  70     ASSERT (fstat (STDIN_FILENO, &stat_buf) == 0);
  71
  72     pwd = getpwnam (buf);
  73     if (! pwd)
  74       {
  75         fprintf (stderr, "Skipping test: %s: no such user\n", buf);
  76         exit (77);
  77       }
  78
  79     ASSERT (pwd->pw_uid == stat_buf.st_uid);
  80   }
  81 #endif
  82 #if defined _WIN32 && !defined __CYGWIN__
  83   /* Native Windows platform.
  84      Note: This test would fail on Cygwin in an ssh session, because sshd
  85      sets USERNAME=SYSTEM.  */
  86   {
  87     const char *name = getenv ("USERNAME");
  88     if (name != NULL && name[0] != '\0')
  89       ASSERT (strcmp (buf, name) == 0);
  90   }
  91 #endif
  92 }