nis/nis_removemember.c

   1 /* Copyright (c) 1997, 1998 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA. */
  19
  20 #include <string.h>
  21 #include <rpcsvc/nis.h>
  22
  23 nis_error
  24 nis_removemember (const_nis_name member, const_nis_name group)
  25 {
  26   if (group != NULL && strlen (group) > 0)
  27     {
  28       char buf[strlen (group) + 14 + NIS_MAXNAMELEN];
  29       char leafbuf[strlen (group) + 2];
  30       char domainbuf[strlen (group) + 2];
  31       nis_name *newmem;
  32       nis_result *res, *res2;
  33       nis_error status;
  34       char *cp, *cp2;
  35       unsigned long int i, j, k;
  36
  37       cp = stpcpy (buf, nis_leaf_of_r (group, leafbuf, sizeof (leafbuf) - 1));
  38       cp = stpcpy (cp, ".groups_dir");
  39       cp2 = nis_domain_of_r (group, domainbuf, sizeof (domainbuf) - 1);
  40       if (cp2 != NULL && strlen (cp2) > 0)
  41         {
  42           cp = stpcpy (cp, ".");
  43           stpcpy (cp, cp2);
  44         }
  45       res = nis_lookup (buf, FOLLOW_LINKS|EXPAND_NAME);
  46       if (NIS_RES_STATUS (res) != NIS_SUCCESS)
  47         {
  48           status = NIS_RES_STATUS (res);
  49           nis_freeresult (res);
  50           return status;
  51         }
  52
  53       if ((res->objects.objects_len != 1) ||
  54           (__type_of (NIS_RES_OBJECT (res)) != NIS_GROUP_OBJ))
  55         return NIS_INVALIDOBJ;
  56
  57       newmem =
  58         calloc (1, NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_len *
  59                 sizeof (char *));
  60       if (newmem == NULL)
  61         return NIS_NOMEMORY;
  62       k = NIS_RES_OBJECT (res)[0].GR_data.gr_members.gr_members_len;
  63       j = 0;
  64       for (i = 0; i < NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_len;
  65            ++i)
  66         {
  67           if (strcmp (NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_val[i],
  68                       member) != 0)
  69             {
  70               newmem[j] = NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_val[i];
  71               ++j;
  72             }
  73           else
  74             {
  75               free (NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_val[i]);
  76               --k;
  77             }
  78         }
  79       free (NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_val);
  80       newmem = realloc (newmem, k * sizeof (char*));
  81       if (newmem == NULL)
  82         return NIS_NOMEMORY;
  83       NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_val = newmem;
  84       NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_len = k;
  85
  86       cp = stpcpy (buf, NIS_RES_OBJECT (res)->zo_name);
  87       *cp++ = '.';
  88       strncpy (cp, NIS_RES_OBJECT (res)->zo_domain, NIS_MAXNAMELEN);
  89       res2 = nis_modify (buf, NIS_RES_OBJECT (res));
  90       status = NIS_RES_STATUS (res2);
  91       nis_freeresult (res);
  92       nis_freeresult (res2);
  93
  94       return status;
  95     }
  96   else
  97     return NIS_FAIL;
  98 }