libnsl/yp/yp_rsvd.c

	yp_rsvd.c revision e8031f0a8ed0e45c6d8847c5e09424e66fd34a4b
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

#include "mt.h"
#include <sys/types.h>
#include <string.h>
#include <stdio.h>
#include <netconfig.h>
#include <netdir.h>
#include <rpc/rpc.h>

static CLIENT *
__yp_clnt_create_rsvdport_netid_req(const char *hostname, rpcprog_t prog,
            rpcvers_t vers, const char *nettype,
            const uint_t sendsz, const uint_t recvsz)
{
    struct netconfig *nconf;
    struct netbuf *svcaddr;
    struct t_bind *tbind;
    CLIENT *clnt = NULL;
    int fd;
    const char *nt;

    if (nettype == NULL)
        return (0);
    else
        nt = nettype;

    if (strcmp(nt, "udp") && strcmp(nt, "tcp") &&
        strcmp(nt, "udp6") && strcmp(nt, "tcp6"))
        return (clnt_create(hostname, prog, vers, nt));

    if ((nconf = getnetconfigent((void *) nt)) == NULL)
        return (NULL);

    if ((fd = t_open(nconf->nc_device, O_RDWR, NULL)) == -1) {
        freenetconfigent(nconf);
        return (NULL);
    }

    /* Attempt to set reserved port, but we don't care if it fails */
    (void) netdir_options(nconf, ND_SET_RESERVEDPORT, fd, NULL);

    /* LINTED pointer cast */
    if ((tbind = (struct t_bind *)t_alloc(fd, T_BIND, T_ADDR)) == NULL) {
        freenetconfigent(nconf);
        return (NULL);
    }

    svcaddr = &(tbind->addr);

    if (!rpcb_getaddr(prog, vers, nconf, svcaddr, hostname)) {
        (void) t_close(fd);
        (void) t_free((char *)tbind, T_BIND);
        freenetconfigent(nconf);
        return (NULL);
    }

    if ((clnt = clnt_tli_create(fd, nconf, svcaddr,
                prog, vers, sendsz, recvsz)) == NULL) {
        (void) t_close(fd);
        (void) t_free((char *)tbind, T_BIND);
    } else {
        (void) t_free((char *)tbind, T_BIND);
        clnt_control(clnt, CLSET_FD_CLOSE, NULL);
    }
    freenetconfigent(nconf);
    return (clnt);
}


CLIENT *
__yp_clnt_create_rsvdport(const char *hostname, rpcprog_t prog,
            rpcvers_t vers, const char *nettype,
            const uint_t sendsz, const uint_t recvsz)
{
    if (nettype == 0) {
        CLIENT *ret;
        ret = __yp_clnt_create_rsvdport_netid_req(hostname, prog,
                    vers, "udp6", sendsz, recvsz);
        if (ret == 0)
            ret = __yp_clnt_create_rsvdport_netid_req(hostname,
                    prog, vers, "udp", sendsz, recvsz);
        return (ret);
    } else {
        return (__yp_clnt_create_rsvdport_netid_req(hostname, prog,
                            vers, nettype,
                            sendsz, recvsz));
    }
}