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/*
* Copyright (c) 1989 Jan-Simon Pendry
* Copyright (c) 1989 Imperial College of Science, Technology & Medicine
* Copyright (c) 1989, 1993
* 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.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)info_nis.c 8.1 (Berkeley) 6/6/93
*
* $FreeBSD$
*
*/
/*
* 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 int nis_not_running = 0;
char default_domain[YPMAXDOMAIN];
if (nis_not_running)
return ENOENT;
if (getdomainname(default_domain, sizeof(default_domain)) < 0) {
nis_not_running = 1;
plog(XLOG_ERROR, "getdomainname: %m");
return EIO;
}
if (!*default_domain) {
nis_not_running = 1;
plog(XLOG_WARNING, "NIS domain name is not set. NIS ignored.");
return ENOENT;
}
domain = strdup(default_domain);
return 0;
}
#ifdef HAS_NIS_RELOAD
struct nis_callback_data {
mnt_map *ncd_m;
char *ncd_map;
void (*ncd_fn)();
};
/*
* Callback from yp_all
*/
static int callback(status, key, kl, val, vl, data)
int status;
char *key;
int kl;
char *val;
int vl;
struct nis_callback_data *data;
{
if (status == YP_TRUE) {
/*
* Add to list of maps
*/
char *kp = strnsave(key, kl);
char *vp = strnsave(val, vl);
(*data->ncd_fn)(data->ncd_m, kp, vp);
/*
* We want more ...
*/
return FALSE;
} else {
/*
* NOMORE means end of map - otherwise log error
*/
if (status != YP_NOMORE) {
/*
* Check what went wrong
*/
int e = ypprot_err(status);
#ifdef DEBUG
plog(XLOG_ERROR, "yp enumeration of %s: %s, status=%d, e=%d",
data->ncd_map, yperr_string(e), status, e);
#else
plog(XLOG_ERROR, "yp enumeration of %s: %s", data->ncd_map, yperr_string(e));
#endif
}
return TRUE;
}
}
int nis_reload P((mnt_map *m, char *map, void (*fn)()));
int nis_reload(m, map, fn)
mnt_map *m;
char *map;
void (*fn)();
{
struct ypall_callback cbinfo;
int error;
struct nis_callback_data data;
if (!domain) {
error = determine_nis_domain();
if (error)
return error;
}
data.ncd_m = m;
data.ncd_map = map;
data.ncd_fn = fn;
cbinfo.data = (voidp) &data;
cbinfo.foreach = callback;
error = yp_all(domain, map, &cbinfo);
if (error)
plog(XLOG_ERROR, "error grabbing nis map of %s: %s", map, yperr_string(ypprot_err(error)));
return error;
}
#endif /* HAS_NIS_RELOAD */
/*
* Try to locate a key using NIS.
*/
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;
int order;
/*
* Make sure domain initialised
*/
if (!domain) {
int error = determine_nis_domain();
if (error)
return error;
}
/*
* Check if map has changed
*/
if (yp_order(domain, map, &order))
return EIO;
if ((time_t) order > *tp) {
*tp = (time_t) order;
return -1;
}
/*
* Lookup key
*/
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, time_t *tp));
int nis_init(map, tp)
char *map;
time_t *tp;
{
int order;
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_order(domain, map, &order))
return ENOENT;
*tp = (time_t) order;
#ifdef DEBUG
dlog("NIS master for %s@%s has order %d", map, domain, order);
#endif
return 0;
}
#endif /* HAS_NIS_MAPS */
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