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/* $OpenBSD: clnt_generic.c,v 1.6 2005/12/21 01:40:22 millert Exp $ */
/*
* 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
*/
/*
* Copyright (C) 1987, Sun Microsystems, Inc.
*/
#include <errno.h>
#include <string.h>
#include <rpc/rpc.h>
#include <sys/socket.h>
#include <netdb.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(char *hostname, u_long prog, u_long vers, char *proto)
{
struct hostent *h;
struct protoent *p;
struct sockaddr_in sin;
int sock;
struct timeval tv;
CLIENT *client;
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);
}
break;
case IPPROTO_TCP:
client = clnttcp_create(&sin, prog, vers, &sock, 0, 0);
if (client == NULL) {
return (NULL);
}
break;
default:
rpc_createerr.cf_stat = RPC_SYSTEMERROR;
rpc_createerr.cf_error.re_errno = EPFNOSUPPORT;
return (NULL);
}
return (client);
}
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