/*-
* SPDX-License-Identifier: BSD-4-Clause
*
* Copyright (c) 1995
* Bill Paul <wpaul@ctr.columbia.edu>. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul 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.
*/
#include <sys/cdefs.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/param.h>
#include <rpc/rpc.h>
#include <rpcsvc/yp.h>
#include <rpcsvc/ypclnt.h>
#include "ypxfr_extern.h"
const char *
ypxfrerr_string(ypxfrstat code)
{
switch (code) {
case YPXFR_SUCC:
return ("Map successfully transferred");
break;
case YPXFR_AGE:
return ("Master's version not newer");
break;
case YPXFR_NOMAP:
return ("No such map in server's domain");
break;
case YPXFR_NODOM:
return ("Domain not supported by server");
break;
case YPXFR_RSRC:
return ("Local resource allocation failure");
break;
case YPXFR_RPC:
return ("RPC failure talking to server");
break;
case YPXFR_MADDR:
return ("Could not get master server address");
break;
case YPXFR_YPERR:
return ("NIS server/map database error");
break;
case YPXFR_BADARGS:
return ("Request arguments bad");
break;
case YPXFR_DBM:
return ("Local database operation failed");
break;
case YPXFR_FILE:
return ("Local file I/O operation failed");
break;
case YPXFR_SKEW:
return ("Map version skew during transfer");
break;
case YPXFR_CLEAR:
return ("Couldn't send \"clear\" request to local ypserv");
break;
case YPXFR_FORCE:
return ("No local order number in map -- use -f flag");
break;
case YPXFR_XFRERR:
return ("General ypxfr error");
break;
case YPXFR_REFUSED:
return ("Transfer request refused by ypserv");
break;
default:
return ("Unknown error code");
break;
}
}
/*
* These are wrappers for the usual yp_master() and yp_order() functions.
* They can use either local yplib functions (the real yp_master() and
* yp_order()) or do direct RPCs to a specified server. The latter is
* necessary if ypxfr is run on a machine that isn't configured as an
* NIS client (this can happen very easily: a given machine need not be
* an NIS client in order to be an NIS server).
*/
/*
* Careful: yp_master() returns a pointer to a dynamically allocated
* buffer. Calling ypproc_master_2() ourselves also returns a pointer
* to dynamically allocated memory, though this time it's memory
* allocated by the XDR routines. We have to rememver to free() or
* xdr_free() the memory as required to avoid leaking memory.
*/
char *
ypxfr_get_master(char *domain, char *map, char *source, const int yplib)
{
static char mastername[MAXPATHLEN + 2];
bzero((char *)&mastername, sizeof(mastername));
if (yplib) {
int res;
char *master;
if ((res = yp_master(domain, map, &master))) {
switch (res) {
case YPERR_DOMAIN:
yp_errno = (enum ypstat)YPXFR_NODOM;
break;
case YPERR_MAP:
yp_errno = (enum ypstat)YPXFR_NOMAP;
break;
case YPERR_YPERR:
default:
yp_errno = (enum ypstat)YPXFR_YPERR;
break;
}
return(NULL);
} else {
snprintf(mastername, sizeof(mastername), "%s", master);
free(master);
return((char *)&mastername);
}
} else {
CLIENT *clnt;
ypresp_master *resp;
ypreq_nokey req;
if ((clnt = clnt_create(source,YPPROG,YPVERS,"udp")) == NULL) {
yp_error("%s",clnt_spcreateerror("failed to \
create udp handle to ypserv"));
yp_errno = (enum ypstat)YPXFR_RPC;
return(NULL);
}
req.map = map;
req.domain = domain;
if ((resp = ypproc_master_2(&req, clnt)) == NULL) {
yp_error("%s",clnt_sperror(clnt,"YPPROC_MASTER \
failed"));
clnt_destroy(clnt);
yp_errno = (enum ypstat)YPXFR_RPC;
return(NULL);
}
clnt_destroy(clnt);
if (resp->stat != YP_TRUE) {
switch (resp->stat) {
case YP_NODOM:
yp_errno = (enum ypstat)YPXFR_NODOM;
break;
case YP_NOMAP:
yp_errno = (enum ypstat)YPXFR_NOMAP;
break;
case YP_YPERR:
default:
yp_errno = (enum ypstat)YPXFR_YPERR;
break;
}
return(NULL);
}
snprintf(mastername, sizeof(mastername), "%s", resp->peer);
/* xdr_free(xdr_ypresp_master, (char *)&resp); */
return((char *)&mastername);
}
}
unsigned long
ypxfr_get_order(char *domain, char *map, char *source, const int yplib)
{
if (yplib) {
unsigned int order;
int res;
if ((res = yp_order(domain, map, &order))) {
switch (res) {
case YPERR_DOMAIN:
yp_errno = (enum ypstat)YPXFR_NODOM;
break;
case YPERR_MAP:
yp_errno = (enum ypstat)YPXFR_NOMAP;
break;
case YPERR_YPERR:
default:
yp_errno = (enum ypstat)YPXFR_YPERR;
break;
}
return(0);
} else
return(order);
} else {
CLIENT *clnt;
ypresp_order *resp;
ypreq_nokey req;
if ((clnt = clnt_create(source,YPPROG,YPVERS,"udp")) == NULL) {
yp_error("%s",clnt_spcreateerror("couldn't create \
udp handle to ypserv"));
yp_errno = (enum ypstat)YPXFR_RPC;
return(0);
}
req.map = map;
req.domain = domain;
if ((resp = ypproc_order_2(&req, clnt)) == NULL) {
yp_error("%s", clnt_sperror(clnt, "YPPROC_ORDER \
failed"));
clnt_destroy(clnt);
yp_errno = (enum ypstat)YPXFR_RPC;
return(0);
}
clnt_destroy(clnt);
if (resp->stat != YP_TRUE) {
switch (resp->stat) {
case YP_NODOM:
yp_errno = (enum ypstat)YPXFR_NODOM;
break;
case YP_NOMAP:
yp_errno = (enum ypstat)YPXFR_NOMAP;
break;
case YP_YPERR:
default:
yp_errno = (enum ypstat)YPXFR_YPERR;
break;
}
return(0);
}
return(resp->ordernum);
}
}
int
ypxfr_match(char *server, char *domain, char *map, char *key,
unsigned long keylen)
{
ypreq_key ypkey;
ypresp_val *ypval;
CLIENT *clnt;
static char buf[YPMAXRECORD + 2];
bzero(buf, sizeof(buf));
if ((clnt = clnt_create(server, YPPROG,YPVERS,"udp")) == NULL) {
yp_error("failed to create UDP handle: %s",
clnt_spcreateerror(server));
return(0);
}
ypkey.domain = domain;
ypkey.map = map;
ypkey.key.keydat_len = keylen;
ypkey.key.keydat_val = key;
if ((ypval = ypproc_match_2(&ypkey, clnt)) == NULL) {
clnt_destroy(clnt);
yp_error("%s: %s", server,
clnt_sperror(clnt,"YPPROC_MATCH failed"));
return(0);
}
clnt_destroy(clnt);
if (ypval->stat != YP_TRUE) {
xdr_free((xdrproc_t)xdr_ypresp_val, ypval);
return(0);
}
xdr_free((xdrproc_t)xdr_ypresp_val, ypval);
return(1);
}
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