1*45077Smckusick /* @(#)clnt_simple.c 2.2 88/08/01 4.0 RPCSRC */
2*45077Smckusick /*
3*45077Smckusick * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
4*45077Smckusick * unrestricted use provided that this legend is included on all tape
5*45077Smckusick * media and as a part of the software program in whole or part. Users
6*45077Smckusick * may copy or modify Sun RPC without charge, but are not authorized
7*45077Smckusick * to license or distribute it to anyone else except as part of a product or
8*45077Smckusick * program developed by the user.
9*45077Smckusick *
10*45077Smckusick * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
11*45077Smckusick * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
12*45077Smckusick * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
13*45077Smckusick *
14*45077Smckusick * Sun RPC is provided with no support and without any obligation on the
15*45077Smckusick * part of Sun Microsystems, Inc. to assist in its use, correction,
16*45077Smckusick * modification or enhancement.
17*45077Smckusick *
18*45077Smckusick * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
19*45077Smckusick * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
20*45077Smckusick * OR ANY PART THEREOF.
21*45077Smckusick *
22*45077Smckusick * In no event will Sun Microsystems, Inc. be liable for any lost revenue
23*45077Smckusick * or profits or other special, indirect and consequential damages, even if
24*45077Smckusick * Sun has been advised of the possibility of such damages.
25*45077Smckusick *
26*45077Smckusick * Sun Microsystems, Inc.
27*45077Smckusick * 2550 Garcia Avenue
28*45077Smckusick * Mountain View, California 94043
29*45077Smckusick */
30*45077Smckusick #if !defined(lint) && defined(SCCSIDS)
31*45077Smckusick static char sccsid[] = "@(#)clnt_simple.c 1.35 87/08/11 Copyr 1984 Sun Micro";
32*45077Smckusick #endif
33*45077Smckusick
34*45077Smckusick /*
35*45077Smckusick * clnt_simple.c
36*45077Smckusick * Simplified front end to rpc.
37*45077Smckusick *
38*45077Smckusick * Copyright (C) 1984, Sun Microsystems, Inc.
39*45077Smckusick */
40*45077Smckusick
41*45077Smckusick #include <stdio.h>
42*45077Smckusick #include <rpc/rpc.h>
43*45077Smckusick #include <sys/socket.h>
44*45077Smckusick #include <netdb.h>
45*45077Smckusick #include <strings.h>
46*45077Smckusick
47*45077Smckusick static struct callrpc_private {
48*45077Smckusick CLIENT *client;
49*45077Smckusick int socket;
50*45077Smckusick int oldprognum, oldversnum, valid;
51*45077Smckusick char *oldhost;
52*45077Smckusick } *callrpc_private;
53*45077Smckusick
callrpc(host,prognum,versnum,procnum,inproc,in,outproc,out)54*45077Smckusick callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out)
55*45077Smckusick char *host;
56*45077Smckusick xdrproc_t inproc, outproc;
57*45077Smckusick char *in, *out;
58*45077Smckusick {
59*45077Smckusick register struct callrpc_private *crp = callrpc_private;
60*45077Smckusick struct sockaddr_in server_addr;
61*45077Smckusick enum clnt_stat clnt_stat;
62*45077Smckusick struct hostent *hp;
63*45077Smckusick struct timeval timeout, tottimeout;
64*45077Smckusick
65*45077Smckusick if (crp == 0) {
66*45077Smckusick crp = (struct callrpc_private *)calloc(1, sizeof (*crp));
67*45077Smckusick if (crp == 0)
68*45077Smckusick return (0);
69*45077Smckusick callrpc_private = crp;
70*45077Smckusick }
71*45077Smckusick if (crp->oldhost == NULL) {
72*45077Smckusick crp->oldhost = malloc(256);
73*45077Smckusick crp->oldhost[0] = 0;
74*45077Smckusick crp->socket = RPC_ANYSOCK;
75*45077Smckusick }
76*45077Smckusick if (crp->valid && crp->oldprognum == prognum && crp->oldversnum == versnum
77*45077Smckusick && strcmp(crp->oldhost, host) == 0) {
78*45077Smckusick /* reuse old client */
79*45077Smckusick } else {
80*45077Smckusick crp->valid = 0;
81*45077Smckusick (void)close(crp->socket);
82*45077Smckusick crp->socket = RPC_ANYSOCK;
83*45077Smckusick if (crp->client) {
84*45077Smckusick clnt_destroy(crp->client);
85*45077Smckusick crp->client = NULL;
86*45077Smckusick }
87*45077Smckusick if ((hp = gethostbyname(host)) == NULL)
88*45077Smckusick return ((int) RPC_UNKNOWNHOST);
89*45077Smckusick timeout.tv_usec = 0;
90*45077Smckusick timeout.tv_sec = 5;
91*45077Smckusick bcopy(hp->h_addr, (char *)&server_addr.sin_addr, hp->h_length);
92*45077Smckusick server_addr.sin_family = AF_INET;
93*45077Smckusick server_addr.sin_port = 0;
94*45077Smckusick if ((crp->client = clntudp_create(&server_addr, (u_long)prognum,
95*45077Smckusick (u_long)versnum, timeout, &crp->socket)) == NULL)
96*45077Smckusick return ((int) rpc_createerr.cf_stat);
97*45077Smckusick crp->valid = 1;
98*45077Smckusick crp->oldprognum = prognum;
99*45077Smckusick crp->oldversnum = versnum;
100*45077Smckusick (void) strcpy(crp->oldhost, host);
101*45077Smckusick }
102*45077Smckusick tottimeout.tv_sec = 25;
103*45077Smckusick tottimeout.tv_usec = 0;
104*45077Smckusick clnt_stat = clnt_call(crp->client, procnum, inproc, in,
105*45077Smckusick outproc, out, tottimeout);
106*45077Smckusick /*
107*45077Smckusick * if call failed, empty cache
108*45077Smckusick */
109*45077Smckusick if (clnt_stat != RPC_SUCCESS)
110*45077Smckusick crp->valid = 0;
111*45077Smckusick return ((int) clnt_stat);
112*45077Smckusick }
113