1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22
23/*
24 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
25 * Use is subject to license terms.
26 */
27
28#pragma ident	"%Z%%M%	%I%	%E% SMI"
29
30#include "mt.h"
31#include <sys/types.h>
32#include <string.h>
33#include <stdio.h>
34#include <netconfig.h>
35#include <netdir.h>
36#include <rpc/rpc.h>
37
38static CLIENT *
39__yp_clnt_create_rsvdport_netid_req(const char *hostname, rpcprog_t prog,
40			rpcvers_t vers, const char *nettype,
41			const uint_t sendsz, const uint_t recvsz)
42{
43	struct netconfig *nconf;
44	struct netbuf *svcaddr;
45	struct t_bind *tbind;
46	CLIENT *clnt = NULL;
47	int fd;
48	const char *nt;
49
50	if (nettype == NULL)
51		return (0);
52	else
53		nt = nettype;
54
55	if (strcmp(nt, "udp") && strcmp(nt, "tcp") &&
56		strcmp(nt, "udp6") && strcmp(nt, "tcp6"))
57		return (clnt_create(hostname, prog, vers, nt));
58
59	if ((nconf = getnetconfigent((void *) nt)) == NULL)
60		return (NULL);
61
62	if ((fd = t_open(nconf->nc_device, O_RDWR, NULL)) == -1) {
63		freenetconfigent(nconf);
64		return (NULL);
65	}
66
67	/* Attempt to set reserved port, but we don't care if it fails */
68	(void) netdir_options(nconf, ND_SET_RESERVEDPORT, fd, NULL);
69
70	/* LINTED pointer cast */
71	if ((tbind = (struct t_bind *)t_alloc(fd, T_BIND, T_ADDR)) == NULL) {
72		freenetconfigent(nconf);
73		return (NULL);
74	}
75
76	svcaddr = &(tbind->addr);
77
78	if (!rpcb_getaddr(prog, vers, nconf, svcaddr, hostname)) {
79		(void) t_close(fd);
80		(void) t_free((char *)tbind, T_BIND);
81		freenetconfigent(nconf);
82		return (NULL);
83	}
84
85	if ((clnt = clnt_tli_create(fd, nconf, svcaddr,
86				prog, vers, sendsz, recvsz)) == NULL) {
87		(void) t_close(fd);
88		(void) t_free((char *)tbind, T_BIND);
89	} else {
90		(void) t_free((char *)tbind, T_BIND);
91		clnt_control(clnt, CLSET_FD_CLOSE, NULL);
92	}
93	freenetconfigent(nconf);
94	return (clnt);
95}
96
97
98CLIENT *
99__yp_clnt_create_rsvdport(const char *hostname, rpcprog_t prog,
100			rpcvers_t vers, const char *nettype,
101			const uint_t sendsz, const uint_t recvsz)
102{
103	if (nettype == 0) {
104		CLIENT *ret;
105		ret = __yp_clnt_create_rsvdport_netid_req(hostname, prog,
106					vers, "udp6", sendsz, recvsz);
107		if (ret == 0)
108			ret = __yp_clnt_create_rsvdport_netid_req(hostname,
109					prog, vers, "udp", sendsz, recvsz);
110		return (ret);
111	} else {
112		return (__yp_clnt_create_rsvdport_netid_req(hostname, prog,
113							vers, nettype,
114							sendsz, recvsz));
115	}
116}
117