nss/tst-sgetsgent.c

   1 /* Test large input for sgetsgent (bug 30151).
   2    Copyright (C) 2023-2024 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <gshadow.h>
  20 #include <stddef.h>
  21 #include <support/check.h>
  22 #include <support/support.h>
  23 #include <support/xmemstream.h>
  24 #include <stdlib.h>
  25
  26 static int
  27 do_test (void)
  28 {
  29   /* Create a shadow group with 1000 members.  */
  30   struct xmemstream mem;
  31   xopen_memstream (&mem);
  32   const char *passwd = "k+zD0nucwfxAo3sw1NXUj6K5vt5M16+X0TVGdE1uFvq5R8V7efJ";
  33   fprintf (mem.out, "group-name:%s::m0", passwd);
  34   for (int i = 1; i < 1000; ++i)
  35     fprintf (mem.out, ",m%d", i);
  36   xfclose_memstream (&mem);
  37
  38   /* Call sgetsgent.  */
  39   char *input = mem.buffer;
  40   struct sgrp *e = sgetsgent (input);
  41   TEST_VERIFY_EXIT (e != NULL);
  42   TEST_COMPARE_STRING (e->sg_namp, "group-name");
  43   TEST_COMPARE_STRING (e->sg_passwd, passwd);
  44   /* No administrators.  */
  45   TEST_COMPARE_STRING (e->sg_adm[0], NULL);
  46   /* Check the members list.  */
  47   for (int i = 0; i < 1000; ++i)
  48     {
  49       char *member = xasprintf ("m%d", i);
  50       TEST_COMPARE_STRING (e->sg_mem[i], member);
  51       free (member);
  52     }
  53   TEST_COMPARE_STRING (e->sg_mem[1000], NULL);
  54
  55   /* Check that putsgent brings back the input string.  */
  56   xopen_memstream (&mem);
  57   TEST_COMPARE (putsgent (e, mem.out), 0);
  58   xfclose_memstream (&mem);
  59   /* Compare without the trailing '\n' that putsgent added.  */
  60   TEST_COMPARE (mem.buffer[mem.length - 1], '\n');
  61   mem.buffer[mem.length - 1] = '\0';
  62   TEST_COMPARE_STRING (mem.buffer, input);
  63
  64   free (mem.buffer);
  65   free (input);
  66   return 0;
  67 }
  68
  69 #include <support/test-driver.c>