1/*
2 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
7 * Reserved.  This file contains Original Code and/or Modifications of
8 * Original Code as defined in and that are subject to the Apple Public
9 * Source License Version 1.1 (the "License").  You may not use this file
10 * except in compliance with the License.  Please obtain a copy of the
11 * License at http://www.apple.com/publicsource and read it before using
12 * this file.
13 *
14 * The Original Code and all software distributed under the License are
15 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT.  Please see the
19 * License for the specific language governing rights and limitations
20 * under the License.
21 *
22 * @APPLE_LICENSE_HEADER_END@
23 */
24/*
25 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
26 * unrestricted use provided that this legend is included on all tape
27 * media and as a part of the software program in whole or part.  Users
28 * may copy or modify Sun RPC without charge, but are not authorized
29 * to license or distribute it to anyone else except as part of a product or
30 * program developed by the user.
31 *
32 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
33 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
34 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
35 *
36 * Sun RPC is provided with no support and without any obligation on the
37 * part of Sun Microsystems, Inc. to assist in its use, correction,
38 * modification or enhancement.
39 *
40 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
41 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
42 * OR ANY PART THEREOF.
43 *
44 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
45 * or profits or other special, indirect and consequential damages, even if
46 * Sun has been advised of the possibility of such damages.
47 *
48 * Sun Microsystems, Inc.
49 * 2550 Garcia Avenue
50 * Mountain View, California  94043
51 */
52
53#if defined(LIBC_SCCS) && !defined(lint)
54/*static char *sccsid = "from: @(#)clnt_simple.c 1.35 87/08/11 Copyr 1984 Sun Micro";*/
55/*static char *sccsid = "from: @(#)clnt_simple.c	2.2 88/08/01 4.0 RPCSRC";*/
56static char *rcsid = "$Id: clnt_simple.c,v 1.3 2002/02/19 20:36:23 epeyton Exp $";
57#endif
58
59/*
60 * clnt_simple.c
61 * Simplified front end to rpc.
62 *
63 * Copyright (C) 1984, Sun Microsystems, Inc.
64 */
65
66#include <stdio.h>
67#include <stdlib.h>
68#include <string.h>
69#include <unistd.h>
70#include <rpc/rpc.h>
71#include <sys/socket.h>
72#include <netdb.h>
73
74static struct callrpc_private {
75	CLIENT	*client;
76	int	socket;
77	int	oldprognum, oldversnum, valid;
78	char	*oldhost;
79} *callrpc_private;
80
81int
82callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out)
83	int prognum;
84	int versnum;
85	int procnum;
86	char *host;
87	xdrproc_t inproc, outproc;
88	char *in, *out;
89{
90	register struct callrpc_private *crp = callrpc_private;
91	struct sockaddr_in server_addr;
92	enum clnt_stat clnt_stat;
93	struct hostent *hp;
94	struct timeval timeout, tottimeout;
95
96	if (crp == 0) {
97		crp = (struct callrpc_private *)calloc(1, sizeof (*crp));
98		if (crp == 0)
99			return (0);
100		callrpc_private = crp;
101	}
102	if (crp->oldhost == NULL) {
103		crp->oldhost = malloc(256);
104		crp->oldhost[0] = 0;
105		crp->socket = RPC_ANYSOCK;
106	}
107	if (crp->valid && crp->oldprognum == prognum && crp->oldversnum == versnum
108		&& strcmp(crp->oldhost, host) == 0) {
109		/* reuse old client */
110	} else {
111		crp->valid = 0;
112		(void)close(crp->socket);
113		crp->socket = RPC_ANYSOCK;
114		if (crp->client) {
115			clnt_destroy(crp->client);
116			crp->client = NULL;
117		}
118		if ((hp = gethostbyname(host)) == NULL)
119			return ((int) RPC_UNKNOWNHOST);
120		timeout.tv_usec = 0;
121		timeout.tv_sec = 5;
122		bzero((char *)&server_addr, sizeof server_addr);
123		bcopy(hp->h_addr, (char *)&server_addr.sin_addr, hp->h_length);
124		server_addr.sin_family = AF_INET;
125		server_addr.sin_port =  0;
126#ifdef __LP64__
127		if ((crp->client = clntudp_create(&server_addr, (uint32_t)prognum,
128			(uint32_t)versnum, timeout, &crp->socket)) == NULL)
129			return ((int) rpc_createerr.cf_stat);
130#else
131		if ((crp->client = clntudp_create(&server_addr, (u_long)prognum,
132			(u_long)versnum, timeout, &crp->socket)) == NULL)
133			return ((int) rpc_createerr.cf_stat);
134#endif
135		crp->valid = 1;
136		crp->oldprognum = prognum;
137		crp->oldversnum = versnum;
138		(void) strcpy(crp->oldhost, host);
139	}
140	tottimeout.tv_sec = 25;
141	tottimeout.tv_usec = 0;
142	clnt_stat = clnt_call(crp->client, procnum, inproc, in,
143	    outproc, out, tottimeout);
144	/*
145	 * if call failed, empty cache
146	 */
147	if (clnt_stat != RPC_SUCCESS)
148		crp->valid = 0;
149	return ((int) clnt_stat);
150}
151