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Annotation of 43BSDReno/lib/librpc/clnt_simple.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
                      3:  * unrestricted use provided that this legend is included on all tape
                      4:  * media and as a part of the software program in whole or part.  Users
                      5:  * may copy or modify Sun RPC without charge, but are not authorized
                      6:  * to license or distribute it to anyone else except as part of a product or
                      7:  * program developed by the user.
                      8:  * 
                      9:  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
                     10:  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
                     11:  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
                     12:  * 
                     13:  * Sun RPC is provided with no support and without any obligation on the
                     14:  * part of Sun Microsystems, Inc. to assist in its use, correction,
                     15:  * modification or enhancement.
                     16:  * 
                     17:  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
                     18:  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
                     19:  * OR ANY PART THEREOF.
                     20:  * 
                     21:  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
                     22:  * or profits or other special, indirect and consequential damages, even if
                     23:  * Sun has been advised of the possibility of such damages.
                     24:  * 
                     25:  * Sun Microsystems, Inc.
                     26:  * 2550 Garcia Avenue
                     27:  * Mountain View, California  94043
                     28:  */
                     29: #ifndef lint
                     30: static char sccsid[] = "@(#)clnt_simple.c 1.1 84/12/20 Copyr 1984 Sun Micro";
                     31: #endif
                     32: 
                     33: /* 
                     34:  * clnt_simple.c
                     35:  * Simplified front end to rpc.
                     36:  *
                     37:  * Copyright (C) 1984, Sun Microsystems, Inc.
                     38:  */
                     39: 
                     40: #include <stdio.h>
                     41: #include <rpc/rpc.h>
                     42: #include <sys/socket.h>
                     43: #include <sys/time.h>
                     44: #include <netdb.h>
                     45: 
                     46: callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out)
                     47:        char *host;
                     48:        xdrproc_t inproc, outproc;
                     49:        char *in, *out;
                     50: {
                     51:        struct sockaddr_in server_addr;
                     52:        enum clnt_stat clnt_stat;
                     53:        struct hostent *hp;
                     54:        struct timeval timeout, tottimeout;
                     55: 
                     56:        static CLIENT *client;
                     57:        static int socket = RPC_ANYSOCK;
                     58:        static int oldprognum, oldversnum, valid;
                     59:        static char oldhost[256];
                     60: 
                     61:        if (valid && oldprognum == prognum && oldversnum == versnum
                     62:                && strcmp(oldhost, host) == 0) {
                     63:                /* reuse old client */          
                     64:        }
                     65:        else {
                     66:                close(socket);
                     67:                socket = RPC_ANYSOCK;
                     68:                if (client) {
                     69:                        clnt_destroy(client);
                     70:                        client = NULL;
                     71:                }
                     72:                if ((hp = gethostbyname(host)) == NULL)
                     73:                        return ((int) RPC_UNKNOWNHOST);
                     74:                timeout.tv_usec = 0;
                     75:                timeout.tv_sec = 10;
                     76:                bcopy(hp->h_addr, &server_addr.sin_addr, hp->h_length);
                     77:                server_addr.sin_family = AF_INET;
                     78:                server_addr.sin_port =  0;
                     79:                if ((client = clntudp_create(&server_addr, prognum,
                     80:                    versnum, timeout, &socket)) == NULL)
                     81:                        return ((int) rpc_createerr.cf_stat);
                     82:                valid = 1;
                     83:                oldprognum = prognum;
                     84:                oldversnum = versnum;
                     85:                strcpy(oldhost, host);
                     86:        }
                     87:        tottimeout.tv_sec = 25;
                     88:        tottimeout.tv_usec = 0;
                     89:        clnt_stat = clnt_call(client, procnum, inproc, in,
                     90:            outproc, out, tottimeout);
                     91:        /* 
                     92:         * if call failed, empty cache
                     93:         */
                     94:        if (clnt_stat != RPC_SUCCESS)
                     95:                valid = 0;
                     96:        return ((int) clnt_stat);
                     97: }

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