shadow/putspent.c

   1 /* Copyright (C) 1991-2017 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 <errno.h>
  19 #include <nss.h>
  20 #include <stdio.h>
  21 #include <shadow.h>
  22
  23 #define flockfile(s) _IO_flockfile (s)
  24 #define funlockfile(s) _IO_funlockfile (s)
  25
  26 #define _S(x)   x ? x : ""
  27
  28
  29 /* Write an entry to the given stream.
  30    This must know the format of the password file.  */
  31 int
  32 putspent (const struct spwd *p, FILE *stream)
  33 {
  34   int errors = 0;
  35
  36   if (p->sp_namp == NULL || !__nss_valid_field (p->sp_namp)
  37       || !__nss_valid_field (p->sp_pwdp))
  38     {
  39       __set_errno (EINVAL);
  40       return -1;
  41     }
  42
  43   flockfile (stream);
  44
  45   if (fprintf (stream, "%s:%s:", p->sp_namp, _S (p->sp_pwdp)) < 0)
  46     ++errors;
  47
  48   if ((p->sp_lstchg != (long int) -1
  49        && fprintf (stream, "%ld:", p->sp_lstchg) < 0)
  50       || (p->sp_lstchg == (long int) -1
  51           && putc_unlocked (':', stream) == EOF))
  52     ++errors;
  53
  54   if ((p->sp_min != (long int) -1
  55        && fprintf (stream, "%ld:", p->sp_min) < 0)
  56       || (p->sp_min == (long int) -1
  57           && putc_unlocked (':', stream) == EOF))
  58     ++errors;
  59
  60   if ((p->sp_max != (long int) -1
  61        && fprintf (stream, "%ld:", p->sp_max) < 0)
  62       || (p->sp_max == (long int) -1
  63           && putc_unlocked (':', stream) == EOF))
  64     ++errors;
  65
  66   if ((p->sp_warn != (long int) -1
  67        && fprintf (stream, "%ld:", p->sp_warn) < 0)
  68       || (p->sp_warn == (long int) -1
  69           && putc_unlocked (':', stream) == EOF))
  70     ++errors;
  71
  72   if ((p->sp_inact != (long int) -1
  73        && fprintf (stream, "%ld:", p->sp_inact) < 0)
  74       || (p->sp_inact == (long int) -1
  75           && putc_unlocked (':', stream) == EOF))
  76     ++errors;
  77
  78   if ((p->sp_expire != (long int) -1
  79        && fprintf (stream, "%ld:", p->sp_expire) < 0)
  80       || (p->sp_expire == (long int) -1
  81           && putc_unlocked (':', stream) == EOF))
  82     ++errors;
  83
  84   if (p->sp_flag != ~0ul
  85       && fprintf (stream, "%ld", p->sp_flag) < 0)
  86     ++errors;
  87
  88   if (putc_unlocked ('\n', stream) == EOF)
  89     ++errors;
  90
  91   funlockfile (stream);
  92
  93   return errors ? -1 : 0;
  94 }