/*************************************************
*     Exim - an Internet mail transport agent    *
*************************************************/

/* Copyright (c) University of Cambridge 1995 - 1999 */
/* See the file NOTICE for conditions of use and distribution. */

#include "../exim.h"
#include "nis.h"

/* Compile these functions only if LOOKUP_DBM is defined. However, some
compilers don't like compiling empty modules, so keep them happy with a dummy
when skipping the rest. Make it reference itself to stop picky compilers
complaining that it is unused, and put in a dummy argument to stop even pickier
compilers complaining about infinite loops. */

#ifndef LOOKUP_NIS
static void dummy(int x) { dummy(x-1); }
#else

#include <rpcsvc/ypclnt.h>


/*************************************************
*              Open entry point                  *
*************************************************/

/* See local README for interface description. This serves for both
the "nis" and "nis0" lookup types. */

void *
nis_open(char *filename, char **errmsg)
{
char *nis_domain;
if (yp_get_default_domain(&nis_domain) != 0)
  {
  *errmsg = string_sprintf("failed to get default NIS domain");
  return NULL;
  }
return nis_domain;
}



/*************************************************
*           Find entry point for nis             *
*************************************************/

/* See local README for interface description. A separate function is used
for nis0 because they are so short it isn't worth trying to use any common
code. */

int
nis_find(void *handle, char *filename, char *keystring, int length,
  char **result, char **errmsg)
{
int rc;
char *nis_data;
int nis_data_length;
if ((rc = yp_match((char *)handle, filename, keystring, length,
    &nis_data, &nis_data_length)) == 0)
  {
  *result = string_copy(nis_data);
  (*result)[nis_data_length] = 0;    /* remove final '\n' */
  return OK;
  }
return (rc == YPERR_KEY || rc == YPERR_MAP)? FAIL : DEFER;
}



/*************************************************
*           Find entry point for nis0            *
*************************************************/

/* See local README for interface description. */

int
nis0_find(void *handle, char *filename, char *keystring, int length,
  char **result, char **errmsg)
{
int rc;
char *nis_data;
int nis_data_length;
if ((rc = yp_match((char *)handle, filename, keystring, length + 1,
    &nis_data, &nis_data_length)) == 0)
  {
  *result = string_copy(nis_data);
  (*result)[nis_data_length] = 0;    /* remove final '\n' */
  return OK;
  }
return (rc == YPERR_KEY || rc == YPERR_MAP)? FAIL : DEFER;
}

#endif  /* LOOKUP_NIS */

/* End of lookups/nis.c */