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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 *sccsid = "from: @(#)clnt_generic.c 1.4 87/08/11 (C) 1987 SMI";*/

/*static char *sccsid = "from: @(#)clnt_generic.c       2.2 88/08/01 4.0 RPCSRC";*/

static char *rcsid = "$FreeBSD: src/lib/libc/rpc/clnt_generic.c,v 1.9 1999/08/28 00:00:35 peter Exp $";

#endif

/*

 * Copyright (C) 1987, Sun Microsystems, Inc.

 */

#include <rpc/rpc.h>

#include <sys/socket.h>

#include <sys/errno.h>

#include <netdb.h>

#include <string.h>

/*

 * Generic client creation: takes (hostname, program-number, protocol) and

 * returns client handle. Default options are set, which the user can

 * change using the rpc equivalent of ioctl()'s.

 */

CLIENT *

clnt_create(hostname, prog, vers, proto)

        char *hostname;

        u_long prog;

        u_long vers;

        char *proto;

{

        struct hostent *h;

        struct protoent *p;

        struct sockaddr_in sin;

#ifndef __rtems__

        struct sockaddr_un sun;

#endif

        int sock;

        struct timeval tv;

        CLIENT *client;

#ifndef __rtems__

        if (!strcmp(proto, "unix")) {

                bzero((char *)&sun, sizeof(sun));

                sun.sun_family = AF_UNIX;

                strcpy(sun.sun_path, hostname);

                sun.sun_len = sizeof(sun.sun_len) + sizeof(sun.sun_family) +

                                strlen(sun.sun_path) + 1;

                sock = RPC_ANYSOCK;

                client = clntunix_create(&sun, prog, vers, &sock, 0, 0);

                if (client == NULL)

                        return(NULL);

                tv.tv_sec = 25;

                tv.tv_usec = 0;

                clnt_control(client, CLSET_TIMEOUT, &tv);

                return(client);

        }

#endif

        h = gethostbyname(hostname);

        if (h == NULL) {

                rpc_createerr.cf_stat = RPC_UNKNOWNHOST;

                return (NULL);

        }

        if (h->h_addrtype != AF_INET) {

                /*

                 * Only support INET for now

                 */

                rpc_createerr.cf_stat = RPC_SYSTEMERROR;

                rpc_createerr.cf_error.re_errno = EAFNOSUPPORT;

                return (NULL);

        }

        memset(&sin, 0, sizeof(sin));

        sin.sin_len = sizeof(struct sockaddr_in);

        sin.sin_family = h->h_addrtype;

        sin.sin_port = 0;

        memcpy((char*)&sin.sin_addr, h->h_addr, h->h_length);

        p = getprotobyname(proto);

        if (p == NULL) {

                rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;

                rpc_createerr.cf_error.re_errno = EPFNOSUPPORT;

                return (NULL);

        }

        sock = RPC_ANYSOCK;

        switch (p->p_proto) {

        case IPPROTO_UDP:

                tv.tv_sec = 5;

                tv.tv_usec = 0;

                client = clntudp_create(&sin, prog, vers, tv, &sock);

                if (client == NULL) {

                        return (NULL);

                }

#if 0   /* XXX do we need this? */

                tv.tv_sec = 25;

                tv.tv_usec = 0;

                clnt_control(client, CLSET_TIMEOUT, &tv);

#endif

                break;

        case IPPROTO_TCP:

                client = clnttcp_create(&sin, prog, vers, &sock, 0, 0);

                if (client == NULL) {

                        return (NULL);

                }

#if 0   /* XXX do we need this? */

                tv.tv_sec = 25;

                tv.tv_usec = 0;

                clnt_control(client, CLSET_TIMEOUT, &tv);

#endif

                break;

        default:

                rpc_createerr.cf_stat = RPC_SYSTEMERROR;

                rpc_createerr.cf_error.re_errno = EPFNOSUPPORT;

                return (NULL);

        }

        return (client);

}