1  /* Copyright (C) 2009-2023 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     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <ctype.h>
      19  #include <errno.h>
      20  #include <gshadow.h>
      21  #include <stdio.h>
      22  #include <string.h>
      23  
      24  /* Define a line parsing function using the common code
      25     used in the nss_files module.  */
      26  
      27  #define STRUCTURE	sgrp
      28  #define ENTNAME		sgent
      29  struct sgent_data {};
      30  
      31  
      32  #define TRAILING_LIST_MEMBER		sg_mem
      33  #define TRAILING_LIST_SEPARATOR_P(c)	((c) == ',')
      34  #include <nss/nss_files/files-parse.c>
      35  LINE_PARSER
      36  (,
      37   STRING_FIELD (result->sg_namp, ISCOLON, 0);
      38   if (line[0] == '\0'
      39       && (result->sg_namp[0] == '+' || result->sg_namp[0] == '-'))
      40     {
      41       result->sg_passwd = NULL;
      42       result->sg_adm = NULL;
      43       result->sg_mem = NULL;
      44     }
      45   else
      46     {
      47       STRING_FIELD (result->sg_passwd, ISCOLON, 0);
      48       STRING_LIST (result->sg_adm, ':');
      49     }
      50   )
      51  
      52  
      53  /* Read one shadow entry from the given stream.  */
      54  int
      55  __sgetsgent_r (const char *string, struct sgrp *resbuf, char *buffer,
      56  	       size_t buflen, struct sgrp **result)
      57  {
      58    char *sp;
      59    if (string < buffer || string >= buffer + buflen)
      60      {
      61        buffer[buflen - 1] = '\0';
      62        sp = strncpy (buffer, string, buflen);
      63        if (buffer[buflen - 1] != '\0')
      64  	{
      65  	  __set_errno (ERANGE);
      66  	  return ERANGE;
      67  	}
      68      }
      69    else
      70      sp = (char *) string;
      71  
      72    int parse_result = parse_line (sp, resbuf, (void *) buffer, buflen, &errno);
      73    *result = parse_result > 0 ? resbuf : NULL;
      74  
      75    return *result == NULL ? errno : 0;
      76  }
      77  weak_alias (__sgetsgent_r, sgetsgent_r)