1  /* Copyright (C) 1996-2023 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 <shadow.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	spwd
      28  #define ENTNAME		spent
      29  struct spent_data {};
      30  
      31  /* Predicate which always returns false, needed below.  */
      32  #define FALSEP(arg) 0
      33  
      34  
      35  #include <nss/nss_files/files-parse.c>
      36  LINE_PARSER
      37  (,
      38   STRING_FIELD (result->sp_namp, ISCOLON, 0);
      39   if (line[0] == '\0'
      40       && (result->sp_namp[0] == '+' || result->sp_namp[0] == '-'))
      41     {
      42       result->sp_pwdp = NULL;
      43       result->sp_lstchg = 0;
      44       result->sp_min = 0;
      45       result->sp_max = 0;
      46       result->sp_warn = -1l;
      47       result->sp_inact = -1l;
      48       result->sp_expire = -1l;
      49       result->sp_flag = ~0ul;
      50     }
      51   else
      52     {
      53       STRING_FIELD (result->sp_pwdp, ISCOLON, 0);
      54       INT_FIELD_MAYBE_NULL (result->sp_lstchg, ISCOLON, 0, 10, (long int) (int),
      55  			   (long int) -1);
      56       INT_FIELD_MAYBE_NULL (result->sp_min, ISCOLON, 0, 10, (long int) (int),
      57  			   (long int) -1);
      58       INT_FIELD_MAYBE_NULL (result->sp_max, ISCOLON, 0, 10, (long int) (int),
      59  			   (long int) -1);
      60       while (isspace (*line))
      61         ++line;
      62       if (*line == '\0')
      63         {
      64  	 /* The old form.  */
      65  	 result->sp_warn = -1l;
      66  	 result->sp_inact = -1l;
      67  	 result->sp_expire = -1l;
      68  	 result->sp_flag = ~0ul;
      69         }
      70       else
      71         {
      72  	 INT_FIELD_MAYBE_NULL (result->sp_warn, ISCOLON, 0, 10,
      73  			       (long int) (int), (long int) -1);
      74  	 INT_FIELD_MAYBE_NULL (result->sp_inact, ISCOLON, 0, 10,
      75  			       (long int) (int), (long int) -1);
      76  	 INT_FIELD_MAYBE_NULL (result->sp_expire, ISCOLON, 0, 10,
      77  			       (long int) (int), (long int) -1);
      78  	 if (*line != '\0')
      79  	   INT_FIELD_MAYBE_NULL (result->sp_flag, FALSEP, 0, 10,
      80  				 (unsigned long int), ~0ul)
      81  	 else
      82  	   result->sp_flag = ~0ul;
      83         }
      84     }
      85   )
      86  
      87  
      88  /* Read one shadow entry from the given stream.  */
      89  int
      90  __sgetspent_r (const char *string, struct spwd *resbuf, char *buffer,
      91  	       size_t buflen, struct spwd **result)
      92  {
      93    buffer[buflen - 1] = '\0';
      94    char *sp = strncpy (buffer, string, buflen);
      95    if (buffer[buflen - 1] != '\0')
      96      return ERANGE;
      97  
      98    int parse_result = parse_line (sp, resbuf, NULL, 0, &errno);
      99    *result = parse_result > 0 ? resbuf : NULL;
     100  
     101    return *result == NULL ? errno : 0;
     102  }
     103  weak_alias (__sgetspent_r, sgetspent_r)