/* $OpenBSD: yplib_host.c,v 1.18 2015/01/16 06:40:22 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/cdefs.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <sys/file.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <rpc/rpc.h>
#include <rpc/xdr.h>
#include <rpcsvc/yp.h>
#include <rpcsvc/ypclnt.h>
#include "yplib_host.h"
extern bool_t xdr_ypresp_all_seq(XDR *, unsigned long *);
extern int (*ypresp_allfn)(u_long, char *, int, char *, int, void *);
extern void *ypresp_data;
static int _yplib_host_timeout = 10;
CLIENT *
yp_bind_host(char *server, u_long program, u_long version, u_short port,
int usetcp)
{
struct sockaddr_in rsrv_sin;
static CLIENT *client;
struct hostent *h;
struct timeval tv;
int rsrv_sock;
memset(&rsrv_sin, 0, sizeof rsrv_sin);
rsrv_sin.sin_len = sizeof rsrv_sin;
rsrv_sin.sin_family = AF_INET;
rsrv_sock = RPC_ANYSOCK;
if (port != 0)
rsrv_sin.sin_port = htons(port);
if (*server >= '0' && *server <= '9') {
if (inet_aton(server, &rsrv_sin.sin_addr) == 0) {
errx(1, "inet_aton: invalid address %s.",
server);
}
} else {
h = gethostbyname(server);
if (h == NULL) {
errx(1, "gethostbyname: unknown host %s.",
server);
}
rsrv_sin.sin_addr.s_addr = *(u_int32_t *)h->h_addr;
}
tv.tv_sec = 10;
tv.tv_usec = 0;
if (usetcp)
client = clnttcp_create(&rsrv_sin, program, version,
&rsrv_sock, 0, 0);
else
client = clntudp_create(&rsrv_sin, program, version, tv,
&rsrv_sock);
if (client == NULL) {
errx(1, "clntudp_create: no contact with host %s.",
server);
}
return (client);
}
CLIENT *
yp_bind_local(u_long program, u_long version)
{
struct sockaddr_in rsrv_sin;
static CLIENT *client;
struct timeval tv;
int rsrv_sock;
memset(&rsrv_sin, 0, sizeof rsrv_sin);
rsrv_sin.sin_len = sizeof rsrv_sin;
rsrv_sin.sin_family = AF_INET;
rsrv_sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
rsrv_sock = RPC_ANYSOCK;
tv.tv_sec = 10;
tv.tv_usec = 0;
client = clntudp_create(&rsrv_sin, program, version, tv, &rsrv_sock);
if (client == NULL) {
errx(1, "clntudp_create: no contact with localhost.");
}
return (client);
}
int
yp_match_host(CLIENT *client, char *indomain, char *inmap, const char *inkey,
int inkeylen, char **outval, int *outvallen)
{
struct ypresp_val yprv;
struct ypreq_key yprk;
struct timeval tv;
int r;
*outval = NULL;
*outvallen = 0;
tv.tv_sec = _yplib_host_timeout;
tv.tv_usec = 0;
yprk.domain = indomain;
yprk.map = inmap;
yprk.key.keydat_val = (char *)inkey;
yprk.key.keydat_len = inkeylen;
memset(&yprv, 0, sizeof yprv);
r = clnt_call(client, YPPROC_MATCH,
(xdrproc_t)xdr_ypreq_key, &yprk,
(xdrproc_t)xdr_ypresp_val, &yprv, tv);
if (r != RPC_SUCCESS)
clnt_perror(client, "yp_match_host: clnt_call");
if ( !(r = ypprot_err(yprv.stat)) ) {
*outvallen = yprv.val.valdat_len;
*outval = malloc(*outvallen + 1);
memcpy(*outval, yprv.val.valdat_val, *outvallen);
(*outval)[*outvallen] = '\0';
}
xdr_free((xdrproc_t)xdr_ypresp_val, (char *)&yprv);
return (r);
}
int
yp_first_host(CLIENT *client, char *indomain, char *inmap, char **outkey,
int *outkeylen, char **outval, int *outvallen)
{
struct ypresp_key_val yprkv;
struct ypreq_nokey yprnk;
struct timeval tv;
int r;
*outkey = *outval = NULL;
*outkeylen = *outvallen = 0;
tv.tv_sec = _yplib_host_timeout;
tv.tv_usec = 0;
yprnk.domain = indomain;
yprnk.map = inmap;
memset(&yprkv, 0, sizeof yprkv);
r = clnt_call(client, YPPROC_FIRST,
(xdrproc_t)xdr_ypreq_nokey, &yprnk,
(xdrproc_t)xdr_ypresp_key_val, &yprkv, tv);
if (r != RPC_SUCCESS)
clnt_perror(client, "yp_first_host: clnt_call");
if ( !(r = ypprot_err(yprkv.stat)) ) {
*outkeylen = yprkv.key.keydat_len;
*outkey = malloc(*outkeylen+1);
memcpy(*outkey, yprkv.key.keydat_val, *outkeylen);
(*outkey)[*outkeylen] = '\0';
*outvallen = yprkv.val.valdat_len;
*outval = malloc(*outvallen+1);
memcpy(*outval, yprkv.val.valdat_val, *outvallen);
(*outval)[*outvallen] = '\0';
}
xdr_free((xdrproc_t)xdr_ypresp_key_val, (char *)&yprkv);
return (r);
}
int
yp_next_host(CLIENT *client, char *indomain, char *inmap, char *inkey,
int inkeylen, char **outkey, int *outkeylen, char **outval, int *outvallen)
{
struct ypresp_key_val yprkv;
struct ypreq_key yprk;
struct timeval tv;
int r;
*outkey = *outval = NULL;
*outkeylen = *outvallen = 0;
tv.tv_sec = _yplib_host_timeout;
tv.tv_usec = 0;
yprk.domain = indomain;
yprk.map = inmap;
yprk.key.keydat_val = inkey;
yprk.key.keydat_len = inkeylen;
memset(&yprkv, 0, sizeof yprkv);
r = clnt_call(client, YPPROC_NEXT,
(xdrproc_t)xdr_ypreq_key, &yprk,
(xdrproc_t)xdr_ypresp_key_val, &yprkv, tv);
if (r != RPC_SUCCESS)
clnt_perror(client, "yp_next_host: clnt_call");
if ( !(r = ypprot_err(yprkv.stat)) ) {
*outkeylen = yprkv.key.keydat_len;
*outkey = malloc(*outkeylen+1);
memcpy(*outkey, yprkv.key.keydat_val, *outkeylen);
(*outkey)[*outkeylen] = '\0';
*outvallen = yprkv.val.valdat_len;
*outval = malloc(*outvallen+1);
memcpy(*outval, yprkv.val.valdat_val, *outvallen);
(*outval)[*outvallen] = '\0';
}
xdr_free((xdrproc_t)xdr_ypresp_key_val, (char *)&yprkv);
return (r);
}
int
yp_all_host(CLIENT *client, char *indomain, char *inmap,
struct ypall_callback *incallback)
{
struct ypreq_nokey yprnk;
struct timeval tv;
u_long status;
tv.tv_sec = _yplib_host_timeout;
tv.tv_usec = 0;
yprnk.domain = indomain;
yprnk.map = inmap;
ypresp_allfn = incallback->foreach;
ypresp_data = (void *)incallback->data;
(void) clnt_call(client, YPPROC_ALL,
(xdrproc_t)xdr_ypreq_nokey, &yprnk,
(xdrproc_t)xdr_ypresp_all_seq, &status, tv);
if (status != YP_FALSE)
return ypprot_err(status);
return (0);
}
int
yp_order_host(CLIENT *client, char *indomain, char *inmap, u_int32_t *outorder)
{
struct ypresp_order ypro;
struct ypreq_nokey yprnk;
struct timeval tv;
int r;
tv.tv_sec = _yplib_host_timeout;
tv.tv_usec = 0;
yprnk.domain = indomain;
yprnk.map = inmap;
memset(&ypro, 0, sizeof ypro);
r = clnt_call(client, YPPROC_ORDER,
(xdrproc_t)xdr_ypreq_nokey, &yprnk,
(xdrproc_t)xdr_ypresp_order, &ypro, tv);
if (r != RPC_SUCCESS)
clnt_perror(client, "yp_order_host: clnt_call");
*outorder = ypro.ordernum;
xdr_free((xdrproc_t)xdr_ypresp_order, (char *)&ypro);
return ypprot_err(ypro.stat);
}
int
yp_master_host(CLIENT *client, char *indomain, char *inmap, char **outname)
{
struct ypresp_master yprm;
struct ypreq_nokey yprnk;
struct timeval tv;
int r;
tv.tv_sec = _yplib_host_timeout;
tv.tv_usec = 0;
yprnk.domain = indomain;
yprnk.map = inmap;
memset(&yprm, 0, sizeof yprm);
r = clnt_call(client, YPPROC_MASTER,
(xdrproc_t)xdr_ypreq_nokey, &yprnk,
(xdrproc_t)xdr_ypresp_master, &yprm, tv);
if (r != RPC_SUCCESS)
clnt_perror(client, "yp_master: clnt_call");
if (!(r = ypprot_err(yprm.stat)))
*outname = strdup(yprm.peer);
xdr_free((xdrproc_t)xdr_ypresp_master, (char *)&yprm);
return (r);
}
int
yp_maplist_host(CLIENT *client, char *indomain, struct ypmaplist **outmaplist)
{
struct ypresp_maplist ypml;
struct timeval tv;
int r;
tv.tv_sec = _yplib_host_timeout;
tv.tv_usec = 0;
memset(&ypml, 0, sizeof ypml);
r = clnt_call(client, YPPROC_MAPLIST,
(xdrproc_t)xdr_domainname, &indomain,
(xdrproc_t)xdr_ypresp_maplist, &ypml, tv);
if (r != RPC_SUCCESS)
clnt_perror(client, "yp_maplist: clnt_call");
*outmaplist = ypml.maps;
/* NO: xdr_free(xdr_ypresp_maplist, &ypml);*/
return ypprot_err(ypml.stat);
}
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