85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
#if !defined(lint) && defined(SCCSIDS)
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static char sccsid[] = "@(#)clnt_simple.c 1.1 92/07/30 Copyr 1984 Sun Micro";
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#endif
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/*
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* clnt_simple.c
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* Simplified front end to rpc.
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*
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* Copyright (C) 1984, Sun Microsystems, Inc.
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*/
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#include <stdio.h>
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#include <rpc/rpc.h>
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#include <sys/socket.h>
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#include <netdb.h>
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#include <strings.h>
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static struct callrpc_private {
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CLIENT *client;
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int socket;
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int oldprognum, oldversnum, valid;
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char *oldhost;
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} *callrpc_private;
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callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out)
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char *host;
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xdrproc_t inproc, outproc;
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char *in, *out;
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{
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register struct callrpc_private *crp = callrpc_private;
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struct sockaddr_in server_addr;
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enum clnt_stat clnt_stat;
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struct hostent *hp;
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struct timeval timeout, tottimeout;
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if (crp == 0) {
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crp = (struct callrpc_private *)calloc(1, sizeof (*crp));
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if (crp == 0)
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return (0);
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callrpc_private = crp;
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}
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if (crp->oldhost == NULL) {
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crp->oldhost = malloc(256);
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crp->oldhost[0] = 0;
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crp->socket = RPC_ANYSOCK;
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}
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if (crp->valid && crp->oldprognum == prognum &&
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crp->oldversnum == versnum &&
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strcmp(crp->oldhost, host) == 0) {
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/* reuse old client */
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} else {
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crp->valid = 0;
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(void)close(crp->socket);
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crp->socket = RPC_ANYSOCK;
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if (crp->client) {
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clnt_destroy(crp->client);
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crp->client = NULL;
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}
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if ((hp = gethostbyname(host)) == NULL)
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return ((int) RPC_UNKNOWNHOST);
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timeout.tv_usec = 0;
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timeout.tv_sec = 5;
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bcopy(hp->h_addr, (char *)&server_addr.sin_addr, hp->h_length);
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server_addr.sin_family = AF_INET;
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server_addr.sin_port = 0;
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if ((crp->client = clntudp_create(&server_addr, (u_long)prognum,
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(u_long)versnum, timeout, &crp->socket)) == NULL)
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return ((int) rpc_createerr.cf_stat);
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crp->valid = 1;
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crp->oldprognum = prognum;
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crp->oldversnum = versnum;
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(void) strcpy(crp->oldhost, host);
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}
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tottimeout.tv_sec = 25;
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tottimeout.tv_usec = 0;
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clnt_stat = clnt_call(crp->client, procnum, inproc, in,
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outproc, out, tottimeout);
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/*
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* if call failed, empty cache
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*/
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if (clnt_stat != RPC_SUCCESS)
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crp->valid = 0;
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return ((int) clnt_stat);
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}
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