128 lines
3.5 KiB
C
128 lines
3.5 KiB
C
/* $NetBSD: clnt_generic.c,v 1.12 1998/11/15 17:25:39 christos Exp $ */
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/*
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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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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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#if 0
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static char *sccsid = "@(#)clnt_generic.c 1.4 87/08/11 (C) 1987 SMI";
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static char *sccsid = "@(#)clnt_generic.c 2.2 88/08/01 4.0 RPCSRC";
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#else
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__RCSID("$NetBSD: clnt_generic.c,v 1.12 1998/11/15 17:25:39 christos Exp $");
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#endif
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#endif
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/*
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* Copyright (C) 1987, Sun Microsystems, Inc.
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*/
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#include "namespace.h"
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <errno.h>
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#include <netdb.h>
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#include <string.h>
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#include <rpc/rpc.h>
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#ifdef __weak_alias
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__weak_alias(clnt_create,_clnt_create);
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#endif
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/*
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* Generic client creation: takes (hostname, program-number, protocol) and
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* returns client handle. Default options are set, which the user can
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* change using the rpc equivalent of ioctl()'s.
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*/
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CLIENT *
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clnt_create(hostname, prog, vers, proto)
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char *hostname;
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u_long prog;
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u_long vers;
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char *proto;
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{
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struct hostent *h;
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struct protoent *p;
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struct sockaddr_in sin;
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int sock;
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struct timeval tv;
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CLIENT *client;
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h = gethostbyname(hostname);
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if (h == NULL) {
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rpc_createerr.cf_stat = RPC_UNKNOWNHOST;
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return (NULL);
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}
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if (h->h_addrtype != AF_INET) {
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/*
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* Only support INET for now
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*/
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rpc_createerr.cf_stat = RPC_SYSTEMERROR;
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rpc_createerr.cf_error.re_errno = EAFNOSUPPORT;
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return (NULL);
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}
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memset(&sin, 0, sizeof(sin));
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sin.sin_len = sizeof(struct sockaddr_in);
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sin.sin_family = h->h_addrtype;
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sin.sin_port = 0;
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if (h->h_length > sin.sin_len)
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h->h_length = sin.sin_len;
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memcpy(&sin.sin_addr.s_addr, h->h_addr, (size_t)h->h_length);
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p = getprotobyname(proto);
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if (p == NULL) {
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rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
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rpc_createerr.cf_error.re_errno = EPFNOSUPPORT;
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return (NULL);
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}
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sock = RPC_ANYSOCK;
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switch (p->p_proto) {
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case IPPROTO_UDP:
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tv.tv_sec = 5;
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tv.tv_usec = 0;
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client = clntudp_create(&sin, prog, vers, tv, &sock);
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if (client == NULL) {
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return (NULL);
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}
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break;
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case IPPROTO_TCP:
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client = clnttcp_create(&sin, prog, vers, &sock, 0, 0);
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if (client == NULL) {
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return (NULL);
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}
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break;
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default:
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rpc_createerr.cf_stat = RPC_SYSTEMERROR;
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rpc_createerr.cf_error.re_errno = EPFNOSUPPORT;
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return (NULL);
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}
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return (client);
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}
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