1  /* Copyright (c) 1997-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <string.h>
      19  #include <rpcsvc/nis.h>
      20  #include <shlib-compat.h>
      21  
      22  nis_error
      23  nis_verifygroup (const_nis_name group)
      24  {
      25    if (group != NULL && group[0] != '\0')
      26      {
      27        size_t grouplen = strlen (group);
      28        char buf[grouplen + 50];
      29        char leafbuf[grouplen + 2];
      30        char domainbuf[grouplen + 2];
      31        nis_result *res;
      32        nis_error status;
      33        char *cp, *cp2;
      34  
      35        cp = stpcpy (buf, nis_leaf_of_r (group, leafbuf, sizeof (leafbuf) - 1));
      36        cp = stpcpy (cp, ".groups_dir");
      37        cp2 = nis_domain_of_r (group, domainbuf, sizeof (domainbuf) - 1);
      38        if (cp2 != NULL && cp2[0] != '\0')
      39  	{
      40  	  *cp++ = '.';
      41  	  stpcpy (cp, cp2);
      42  	}
      43        res = nis_lookup (buf, 0);
      44        status = NIS_RES_STATUS (res);
      45        nis_freeresult (res);
      46        return status;
      47      }
      48    else
      49      return NIS_FAIL;
      50  }
      51  libnsl_hidden_nolink_def (nis_verifygroup, GLIBC_2_1)