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glibc  2.9
Functions
nis_addmember.c File Reference
#include <assert.h>
#include <string.h>
#include <rpcsvc/nis.h>

Go to the source code of this file.

Functions

nis_error nis_addmember (const_nis_name member, const_nis_name group)

Function Documentation

nis_error nis_addmember ( const_nis_name  member,
const_nis_name  group 
)

Definition at line 25 of file nis_addmember.c.

{
  if (group != NULL && group[0] != '\0')
    {
      size_t grouplen = strlen (group);
      char buf[grouplen + 14 + NIS_MAXNAMELEN];
      char domainbuf[grouplen + 2];
      nis_result *res, *res2;
      nis_error status;
      char *cp, *cp2;

      cp = rawmemchr (nis_leaf_of_r (group, buf, sizeof (buf) - 1), '\0');
      cp = stpcpy (cp, ".groups_dir");
      cp2 = nis_domain_of_r (group, domainbuf, sizeof (domainbuf) - 1);
      if (cp2 != NULL && cp2[0] != '\0')
        {
         *cp++ = '.';
          stpcpy (cp, cp2);
        }
      res = nis_lookup (buf, FOLLOW_LINKS | EXPAND_NAME);
      if (NIS_RES_STATUS (res) != NIS_SUCCESS)
       {
         status = NIS_RES_STATUS (res);
         nis_freeresult (res);
         return status;
       }
      if (NIS_RES_NUMOBJ (res) != 1
         || __type_of (NIS_RES_OBJECT (res)) != NIS_GROUP_OBJ)
       {
         nis_freeresult (res);
         return NIS_INVALIDOBJ;
       }

      u_int gr_members_len
       = NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_len;

      nis_name *new_gr_members_val
       = realloc (NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_val,
                 (gr_members_len + 1) * sizeof (nis_name));
      if (new_gr_members_val == NULL)
       goto nomem_out;

      NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_val
       = new_gr_members_val;

      new_gr_members_val[gr_members_len] = strdup (member);
      if (new_gr_members_val[gr_members_len] == NULL)
       {
       nomem_out:
         nis_freeresult (res);
         return NIS_NOMEMORY;
       }
      ++NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_len;

      /* Check the buffer bounds are not exceeded.  */
      assert (strlen (NIS_RES_OBJECT(res)->zo_name) + 1 < grouplen + 14);
      cp = stpcpy (buf, NIS_RES_OBJECT(res)->zo_name);
      *cp++ = '.';
      strncpy (cp, NIS_RES_OBJECT (res)->zo_domain, NIS_MAXNAMELEN);
      res2 = nis_modify (buf, NIS_RES_OBJECT (res));
      status = NIS_RES_STATUS (res2);
      nis_freeresult (res);
      nis_freeresult (res2);

      return status;
    }
  else
    return NIS_FAIL;
}

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