testsuite/nsswitch/getent.c

   1 /* Cut down version of getent which only returns passwd and group database
   2    entries and seems to compile on most systems without too much fuss.
   3    Original copyright notice below. */
   4
   5 /* Copyright (c) 1998, 1999, 2000 Free Software Foundation, Inc.
   6    This file is part of the GNU C Library.
   7    Contributed by Thorsten Kukuk <kukuk@suse.de>, 1998.
   8
   9    The GNU C Library is free software; you can redistribute it and/or
  10    modify it under the terms of the GNU Lesser General Public License as
  11    published by the Free Software Foundation; either version 3 of the
  12    License, or (at your option) any later version.
  13
  14    The GNU C Library is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17    Library General Public License for more details.
  18
  19    You should have received a copy of the GNU Lesser General Public
  20    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  21    see <http://www.gnu.org/licenses/>. */
  22
  23 #include <stdio.h>
  24 #include <pwd.h>
  25 #include <grp.h>
  26
  27 group_keys (int number, char *key[])
  28 {
  29   int result = 0;
  30   int i;
  31
  32   for (i = 0; i < number; ++i)
  33     {
  34       struct group *grp;
  35
  36       if (isdigit (key[i][0]))
  37         grp = getgrgid (atol (key[i]));
  38       else
  39         grp = getgrnam (key[i]);
  40
  41       if (grp == NULL)
  42         result = 2;
  43       else
  44         print_group (grp);
  45     }
  46
  47   return result;
  48 }
  49
  50 passwd_keys (int number, char *key[])
  51 {
  52   int result = 0;
  53   int i;
  54
  55   for (i = 0; i < number; ++i)
  56     {
  57       struct passwd *pwd;
  58
  59       if (isdigit (key[i][0]))
  60         pwd = getpwuid (atol (key[i]));
  61       else
  62         pwd = getpwnam (key[i]);
  63
  64       if (pwd == NULL)
  65         result = 2;
  66       else
  67         print_passwd (pwd);
  68     }
  69
  70   return result;
  71 }
  72
  73 print_group (struct group *grp)
  74 {
  75   unsigned int i = 0;
  76
  77   printf ("%s:%s:%ld:", grp->gr_name ? grp->gr_name : "",
  78           grp->gr_passwd ? grp->gr_passwd : "",
  79           (unsigned long)grp->gr_gid);
  80
  81   while (grp->gr_mem[i] != NULL)
  82     {
  83       fputs (grp->gr_mem[i], stdout);
  84       ++i;
  85       if (grp->gr_mem[i] != NULL)
  86         fputs (",", stdout);
  87     }
  88   fputs ("\n", stdout);
  89 }
  90
  91 print_passwd (struct passwd *pwd)
  92 {
  93   printf ("%s:%s:%ld:%ld:%s:%s:%s\n",
  94           pwd->pw_name ? pwd->pw_name : "",
  95           pwd->pw_passwd ? pwd->pw_passwd : "",
  96           (unsigned long)pwd->pw_uid,
  97           (unsigned long)pwd->pw_gid,
  98           pwd->pw_gecos ? pwd->pw_gecos : "",
  99           pwd->pw_dir ? pwd->pw_dir : "",
 100           pwd->pw_shell ? pwd->pw_shell : "");
 101 }
 102
 103 int main(int argc, char **argv)
 104 {
 105   switch(argv[1][0])
 106     {
 107     case 'g': /* group */
 108       if (strcmp (argv[1], "group") == 0)
 109         {
 110           if (argc == 2)
 111             {
 112               struct group *grp;
 113
 114               setgrent ();
 115               while ((grp = getgrent()) != NULL)
 116                 print_group (grp);
 117               endgrent ();
 118             }
 119           else
 120             return group_keys (argc - 2, &argv[2]);
 121         }
 122       else
 123         goto error;
 124       break;
 125
 126    case 'p': /* passwd, protocols */
 127       if (strcmp (argv[1], "passwd") == 0)
 128         {
 129           if (argc == 2)
 130             {
 131               struct passwd *pwd;
 132
 133               setpwent ();
 134               while ((pwd = getpwent()) != NULL)
 135                 print_passwd (pwd);
 136               endpwent ();
 137             }
 138           else
 139             return passwd_keys (argc - 2, &argv[2]);
 140         }
 141       else
 142         goto error;
 143       break;
 144     default:
 145     error:
 146       fprintf (stderr, "Unknown database: %s\n", argv[1]);
 147       return 1;
 148     }
 149   return 0;
 150 }