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 && group[0] != '\0')
  27     {
  28       size_t grouplen = strlen (group);
  29       char buf[grouplen + 14 + NIS_MAXNAMELEN];
  30       char leafbuf[grouplen + 2];
  31       char domainbuf[grouplen + 2];
  32       nis_name *newmem;
  33       nis_result *res, *res2;
  34       nis_error status;
  35       char *cp, *cp2;
  36       unsigned long int i, j, k;
  37
  38       cp = stpcpy (buf, nis_leaf_of_r (group, leafbuf, sizeof (leafbuf) - 1));
  39       cp = stpcpy (cp, ".groups_dir");
  40       cp2 = nis_domain_of_r (group, domainbuf, sizeof (domainbuf) - 1);
  41       if (cp2 != NULL && cp2[0] != '\0')
  42         {
  43           cp = stpcpy (cp, ".");
  44           stpcpy (cp, cp2);
  45         }
  46       res = nis_lookup (buf, FOLLOW_LINKS|EXPAND_NAME);
  47       if (NIS_RES_STATUS (res) != NIS_SUCCESS)
  48         {
  49           status = NIS_RES_STATUS (res);
  50           nis_freeresult (res);
  51           return status;
  52         }
  53
  54       if ((res->objects.objects_len != 1) ||
  55           (__type_of (NIS_RES_OBJECT (res)) != NIS_GROUP_OBJ))
  56         return NIS_INVALIDOBJ;
  57
  58       newmem =
  59         calloc (1, NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_len *
  60                 sizeof (char *));
  61       if (newmem == NULL)
  62         return NIS_NOMEMORY;
  63       k = NIS_RES_OBJECT (res)[0].GR_data.gr_members.gr_members_len;
  64       j = 0;
  65       for (i = 0; i < NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_len;
  66            ++i)
  67         {
  68           if (strcmp (NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_val[i],
  69                       member) != 0)
  70             {
  71               newmem[j] = NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_val[i];
  72               ++j;
  73             }
  74           else
  75             {
  76               free (NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_val[i]);
  77               --k;
  78             }
  79         }
  80       free (NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_val);
  81       newmem = realloc (newmem, k * sizeof (char*));
  82       if (newmem == NULL)
  83         return NIS_NOMEMORY;
  84       NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_val = newmem;
  85       NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_len = k;
  86
  87       cp = stpcpy (buf, NIS_RES_OBJECT (res)->zo_name);
  88       *cp++ = '.';
  89       strncpy (cp, NIS_RES_OBJECT (res)->zo_domain, NIS_MAXNAMELEN);
  90       res2 = nis_modify (buf, NIS_RES_OBJECT (res));
  91       status = NIS_RES_STATUS (res2);
  92       nis_freeresult (res);
  93       nis_freeresult (res2);
  94
  95       return status;
  96     }
  97   else
  98     return NIS_FAIL;
  99 }