nss/tst-nss-getpwent.c

   1 /* Copyright (C) 2015-2017 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library 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 GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <pwd.h>
  19 #include <stdbool.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23
  24 #include <support/support.h>
  25
  26 int
  27 do_test (void)
  28 {
  29   /* Count the number of entries in the password database, and fetch
  30      data from the first and last entries.  */
  31   size_t count = 0;
  32   struct passwd * pw;
  33   char *first_name = NULL;
  34   uid_t first_uid = 0;
  35   char *last_name = NULL;
  36   uid_t last_uid = 0;
  37   setpwent ();
  38   while ((pw  = getpwent ()) != NULL)
  39     {
  40       if (first_name == NULL)
  41         {
  42           first_name = xstrdup (pw->pw_name);
  43           first_uid = pw->pw_uid;
  44         }
  45
  46       free (last_name);
  47       last_name = xstrdup (pw->pw_name);
  48       last_uid = pw->pw_uid;
  49       ++count;
  50     }
  51   endpwent ();
  52
  53   if (count == 0)
  54     {
  55       printf ("No entries in the password database.\n");
  56       return 0;
  57     }
  58
  59   /* Try again, this time interleaving with name-based and UID-based
  60      lookup operations.  The counts do not match if the interleaved
  61      lookups affected the enumeration.  */
  62   size_t new_count = 0;
  63   setpwent ();
  64   while ((pw  = getpwent ()) != NULL)
  65     {
  66       if (new_count == count)
  67         {
  68           printf ("Additional entry in the password database.\n");
  69           return 1;
  70         }
  71       ++new_count;
  72       struct passwd *pw2 = getpwnam (first_name);
  73       if (pw2 == NULL)
  74         {
  75           printf ("getpwnam (%s) failed: %m\n", first_name);
  76           return 1;
  77         }
  78       pw2 = getpwnam (last_name);
  79       if (pw2 == NULL)
  80         {
  81           printf ("getpwnam (%s) failed: %m\n", last_name);
  82           return 1;
  83         }
  84       pw2 = getpwuid (first_uid);
  85       if (pw2 == NULL)
  86         {
  87           printf ("getpwuid (%llu) failed: %m\n",
  88                   (unsigned long long) first_uid);
  89           return 1;
  90         }
  91       pw2 = getpwuid (last_uid);
  92       if (pw2 == NULL)
  93         {
  94           printf ("getpwuid (%llu) failed: %m\n",
  95                   (unsigned long long) last_uid);
  96           return 1;
  97         }
  98     }
  99   endpwent ();
 100   if (new_count < count)
 101     {
 102       printf ("Missing entry in the password database.\n");
 103       return 1;
 104     }
 105
 106   return 0;
 107 }
 108
 109 #define TIMEOUT 300
 110 #include <support/test-driver.c>