from Jan Pendry

[unix-history] / usr / src / usr.sbin / amd / amd / info_nis.c

/*
* $Id: info_nis.c,v 5.2 90/06/23 22:19:32 jsp Rel $
*
* Copyright (c) 1989 Jan-Simon Pendry
* Copyright (c) 1989 Imperial College of Science, Technology & Medicine
* Copyright (c) 1989 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Jan-Simon Pendry at Imperial College, London.
*
* %sccs.include.redist.c%
*
*      @(#)info_nis.c  5.1 (Berkeley) %G%
*/

/*
* Get info from NIS map
*/

#include "am.h"

#ifdef HAS_NIS_MAPS
#include <rpcsvc/yp_prot.h>
#include <rpcsvc/ypclnt.h>

/*
* Figure out the nis domain name
*/
static int determine_nis_domain(P_void)
{
static   char default_domain[YPMAXDOMAIN];

       if (getdomainname(default_domain, sizeof(default_domain)) < 0) {
               plog(XLOG_ERROR, "getdomainname: %m");
               return EIO;
       }

       domain = default_domain;
       if (!*domain) {
               plog(XLOG_ERROR, "YP domain name is not set");
               return ENOENT;
       }

       return 0;
}

/*
* Try to locate a key using NIS.
* Modify time is ignored in NIS - XXX
*/
int nis_search P((mnt_map *m, char *map, char *key, char **val, time_t *tp));
int nis_search(m, map, key, val, tp)
mnt_map *m;
char *map;
char *key;
char **val;
time_t *tp;
{
       int outlen;
       int res;

       if (!domain) {
               int error = determine_nis_domain();
               if (error)
                       return error;
       }

       res = yp_match(domain, map, key, strlen(key), val, &outlen);

       /*
        * Do something interesting with the return code
        */
       switch (res) {
       case 0:
               return 0;

       case YPERR_KEY:
               return ENOENT;

       default:
               plog(XLOG_ERROR, "%s: %s", map, yperr_string(res));
               return EIO;
       }
}

int nis_init P((char *map));
int nis_init(map)
char *map;
{
       char *name = 0;

       if (!domain) {
               int error = determine_nis_domain();
               if (error)
                       return error;
       }

       /*
        * To see if the map exists, try to find
        * a master for it.
        */
       if (yp_master(domain, map, &name))
               return ENOENT;
       free(name);
       return 0;
}
#endif /* HAS_NIS_MAPS */