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/*
* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
* unrestricted use provided that this legend is included on all tape
* media and as a part of the software program in whole or part. Users
* may copy or modify Sun RPC without charge, but are not authorized
* to license or distribute it to anyone else except as part of a product or
* program developed by the user.
*
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
*
* Sun RPC is provided with no support and without any obligation on the
* part of Sun Microsystems, Inc. to assist in its use, correction,
* modification or enhancement.
*
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
* OR ANY PART THEREOF.
*
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
* or profits or other special, indirect and consequential damages, even if
* Sun has been advised of the possibility of such damages.
*
* Sun Microsystems, Inc.
* 2550 Garcia Avenue
* Mountain View, California 94043
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char *rcsid = "$OpenBSD: clnt_simple.c,v 1.9 2001/03/03 06:50:28 deraadt Exp $";
#endif /* LIBC_SCCS and not lint */
/*
* clnt_simple.c
* Simplified front end to rpc.
*
* Copyright (C) 1984, Sun Microsystems, Inc.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <rpc/rpc.h>
#include <sys/socket.h>
#include <netdb.h>
#include <unistd.h>
static struct callrpc_private {
CLIENT *client;
int socket;
int oldprognum, oldversnum, valid;
char *oldhost;
} *callrpc_private;
int
callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out)
char *host;
int prognum, versnum, procnum;
xdrproc_t inproc, outproc;
char *in, *out;
{
struct callrpc_private *save_callrpc_private = callrpc_private;
struct callrpc_private *crp = callrpc_private;
struct sockaddr_in server_addr;
enum clnt_stat clnt_stat;
struct hostent *hp;
struct timeval timeout, tottimeout;
if (crp == NULL) {
crp = (struct callrpc_private *)calloc(1, sizeof (*crp));
if (crp == NULL)
return (0);
callrpc_private = crp;
}
if (crp->oldhost == NULL) {
crp->oldhost = malloc(MAXHOSTNAMELEN);
if (crp->oldhost == NULL) {
free(crp);
callrpc_private = save_callrpc_private;
return (0);
}
crp->oldhost[0] = 0;
crp->socket = RPC_ANYSOCK;
}
if (crp->valid && crp->oldprognum == prognum && crp->oldversnum == versnum
&& strcmp(crp->oldhost, host) == 0) {
/* reuse old client */
} else {
crp->valid = 0;
if (crp->socket != -1)
(void)close(crp->socket);
crp->socket = RPC_ANYSOCK;
if (crp->client) {
clnt_destroy(crp->client);
crp->client = NULL;
}
if ((hp = gethostbyname(host)) == NULL)
return ((int) RPC_UNKNOWNHOST);
timeout.tv_usec = 0;
timeout.tv_sec = 5;
memset(&server_addr, 0, sizeof(server_addr));
memcpy((char *)&server_addr.sin_addr, hp->h_addr, hp->h_length);
server_addr.sin_len = sizeof(struct sockaddr_in);
server_addr.sin_family = AF_INET;
server_addr.sin_port = 0;
if ((crp->client = clntudp_create(&server_addr, (u_long)prognum,
(u_long)versnum, timeout, &crp->socket)) == NULL)
return ((int) rpc_createerr.cf_stat);
crp->valid = 1;
crp->oldprognum = prognum;
crp->oldversnum = versnum;
(void) strncpy(crp->oldhost, host, MAXHOSTNAMELEN-1);
crp->oldhost[MAXHOSTNAMELEN-1] = '\0';
}
tottimeout.tv_sec = 25;
tottimeout.tv_usec = 0;
clnt_stat = clnt_call(crp->client, procnum, inproc, in,
outproc, out, tottimeout);
/*
* if call failed, empty cache
*/
if (clnt_stat != RPC_SUCCESS)
crp->valid = 0;
return ((int) clnt_stat);
}
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