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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /sunrpc/clnt_simp.c
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initial import
Diffstat (limited to 'sunrpc/clnt_simp.c')
-rw-r--r--sunrpc/clnt_simp.c112
1 files changed, 112 insertions, 0 deletions
diff --git a/sunrpc/clnt_simp.c b/sunrpc/clnt_simp.c
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+/* @(#)clnt_simple.c 2.2 88/08/01 4.0 RPCSRC */
+/*
+ * 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(lint) && defined(SCCSIDS)
+static char sccsid[] = "@(#)clnt_simple.c 1.35 87/08/11 Copyr 1984 Sun Micro";
+#endif
+
+/*
+ * clnt_simple.c
+ * Simplified front end to rpc.
+ *
+ * Copyright (C) 1984, Sun Microsystems, Inc.
+ */
+
+#include <stdio.h>
+#include <rpc/rpc.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <strings.h>
+
+static struct callrpc_private {
+ CLIENT *client;
+ int socket;
+ int oldprognum, oldversnum, valid;
+ char *oldhost;
+} *callrpc_private;
+
+callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out)
+ char *host;
+ xdrproc_t inproc, outproc;
+ char *in, *out;
+{
+ register 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 == 0) {
+ crp = (struct callrpc_private *)calloc(1, sizeof (*crp));
+ if (crp == 0)
+ return (0);
+ callrpc_private = crp;
+ }
+ if (crp->oldhost == NULL) {
+ crp->oldhost = malloc(256);
+ 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;
+ (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;
+ bcopy(hp->h_addr, (char *)&server_addr.sin_addr, hp->h_length);
+ 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) strcpy(crp->oldhost, host);
+ }
+ 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);
+}