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