nis/nis_removemember.c

   1 /* Copyright (c) 1997, 1998, 1999 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 Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the 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    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    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 (res == NULL || NIS_RES_STATUS (res) != NIS_SUCCESS)
  48         {
  49           if (res)
  50             {
  51               status = NIS_RES_STATUS (res);
  52               nis_freeresult (res);
  53             }
  54           else
  55             return NIS_NOMEMORY;
  56           return status;
  57         }
  58
  59       if ((res->objects.objects_len != 1) ||
  60           (__type_of (NIS_RES_OBJECT (res)) != NIS_GROUP_OBJ))
  61         {
  62           nis_freeresult (res);
  63           return NIS_INVALIDOBJ;
  64         }
  65
  66       newmem =
  67         calloc (NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_len,
  68                 sizeof (char *));
  69       if (newmem == NULL)
  70         return NIS_NOMEMORY;
  71
  72       k = NIS_RES_OBJECT (res)[0].GR_data.gr_members.gr_members_len;
  73       j = 0;
  74       for (i = 0; i < NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_len;
  75            ++i)
  76         {
  77           if (strcmp (NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_val[i],
  78                       member) != 0)
  79             {
  80               newmem[j] = NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_val[i];
  81               ++j;
  82             }
  83           else
  84             {
  85               free (NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_val[i]);
  86               --k;
  87             }
  88         }
  89       free (NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_val);
  90       newmem = realloc (newmem, k * sizeof (char*));
  91       if (newmem == NULL)
  92         return NIS_NOMEMORY;
  93
  94       NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_val = newmem;
  95       NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_len = k;
  96
  97       cp = stpcpy (buf, NIS_RES_OBJECT (res)->zo_name);
  98       *cp++ = '.';
  99       strncpy (cp, NIS_RES_OBJECT (res)->zo_domain, NIS_MAXNAMELEN);
 100       res2 = nis_modify (buf, NIS_RES_OBJECT (res));
 101       status = NIS_RES_STATUS (res2);
 102       nis_freeresult (res);
 103       nis_freeresult (res2);
 104
 105       return status;
 106     }
 107   else
 108     return NIS_FAIL;
 109 }