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123 lines
3.7 KiB
C
123 lines
3.7 KiB
C
/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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/*static char *sccsid = "from: @(#)clnt_simple.c 1.35 87/08/11 Copyr 1984 Sun Micro";*/
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/*static char *sccsid = "from: @(#)clnt_simple.c 2.2 88/08/01 4.0 RPCSRC";*/
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static char *rcsid = "$Id$";
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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 <sys/param.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.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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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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int
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callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out)
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char *host;
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int prognum, versnum, procnum;
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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(MAXHOSTNAMELEN);
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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 && 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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if (crp->socket != -1)
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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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memset(&server_addr, 0, sizeof(server_addr));
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memcpy((char *)&server_addr.sin_addr, hp->h_addr, hp->h_length);
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server_addr.sin_len = sizeof(struct sockaddr_in);
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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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