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/* $OpenBSD: yp_first.c,v 1.10 2015/01/16 16:48:51 deraadt Exp $ */
/*
* Copyright (c) 1992, 1993 Theo de Raadt <deraadt@theos.com>
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#include <sys/types.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <rpc/rpc.h>
#include <rpc/xdr.h>
#include <rpcsvc/yp.h>
#include <rpcsvc/ypclnt.h>
#include "ypinternal.h"
int
yp_first(const char *indomain, const char *inmap, char **outkey, int *outkeylen,
char **outval, int *outvallen)
{
struct ypresp_key_val yprkv;
struct ypreq_nokey yprnk;
struct dom_binding *ysd;
struct timeval tv;
int tries = 0, r;
if (indomain == NULL || *indomain == '\0' ||
strlen(indomain) > YPMAXDOMAIN || inmap == NULL ||
*inmap == '\0' || strlen(inmap) > YPMAXMAP)
return YPERR_BADARGS;
*outkey = *outval = NULL;
*outkeylen = *outvallen = 0;
again:
if (_yp_dobind(indomain, &ysd) != 0)
return YPERR_DOMAIN;
tv.tv_sec = _yplib_timeout;
tv.tv_usec = 0;
yprnk.domain = (char *)indomain;
yprnk.map = (char *)inmap;
(void)memset(&yprkv, 0, sizeof yprkv);
r = clnt_call(ysd->dom_client, YPPROC_FIRST,
xdr_ypreq_nokey, &yprnk, xdr_ypresp_key_val, &yprkv, tv);
if (r != RPC_SUCCESS) {
if (tries++)
clnt_perror(ysd->dom_client, "yp_first: clnt_call");
ysd->dom_vers = -1;
goto again;
}
if (!(r = ypprot_err(yprkv.stat))) {
*outkeylen = yprkv.key.keydat_len;
*outvallen = yprkv.val.valdat_len;
if ((*outkey = malloc(*outkeylen + 1)) == NULL ||
(*outval = malloc(*outvallen + 1)) == NULL) {
free(*outkey);
r = YPERR_RESRC;
} else {
(void)memcpy(*outkey, yprkv.key.keydat_val, *outkeylen);
(*outkey)[*outkeylen] = '\0';
(void)memcpy(*outval, yprkv.val.valdat_val, *outvallen);
(*outval)[*outvallen] = '\0';
}
}
xdr_free(xdr_ypresp_key_val, (char *) &yprkv);
_yp_unbind(ysd);
return r;
}
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