gshadow/sgetsgent_r.c

   1 /* Copyright (C) 2009 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, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <ctype.h>
  20 #include <errno.h>
  21 #include <gshadow.h>
  22 #include <stdio.h>
  23 #include <string.h>
  24
  25 /* Define a line parsing function using the common code
  26    used in the nss_files module.  */
  27
  28 #define STRUCTURE       sgrp
  29 #define ENTNAME         sgent
  30 struct sgent_data {};
  31
  32
  33 #define TRAILING_LIST_MEMBER            sg_mem
  34 #define TRAILING_LIST_SEPARATOR_P(c)    ((c) == ',')
  35 #include <nss/nss_files/files-parse.c>
  36 LINE_PARSER
  37 (,
  38  STRING_FIELD (result->sg_namp, ISCOLON, 0);
  39  if (line[0] == '\0'
  40      && (result->sg_namp[0] == '+' || result->sg_namp[0] == '-'))
  41    {
  42      result->sg_passwd = NULL;
  43      result->sg_adm = NULL;
  44      result->sg_mem = NULL;
  45    }
  46  else
  47    {
  48      STRING_FIELD (result->sg_passwd, ISCOLON, 0);
  49      STRING_LIST (result->sg_adm, ':');
  50    }
  51  )
  52
  53
  54 /* Read one shadow entry from the given stream.  */
  55 int
  56 __sgetsgent_r (const char *string, struct sgrp *resbuf, char *buffer,
  57                size_t buflen, struct sgrp **result)
  58 {
  59   char *sp;
  60   if (string < buffer || string >= buffer + buflen)
  61     {
  62       buffer[buflen - 1] = '\0';
  63       sp = strncpy (buffer, string, buflen);
  64       if (buffer[buflen - 1] != '\0')
  65         return ERANGE;
  66     }
  67   else
  68     sp = (char *) string;
  69
  70   int parse_result = parse_line (sp, resbuf, (void *) buffer, buflen, &errno);
  71   *result = parse_result > 0 ? resbuf : NULL;
  72
  73   return *result == NULL ? errno : 0;
  74 }
  75 weak_alias (__sgetsgent_r, sgetsgent_r)