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pmap_clnt.c revision 1.19 
      1 /*	$NetBSD: pmap_clnt.c,v 1.19 2013/03/11 20:19:29 tron Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2010, Oracle America, Inc.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions are
      8  * met:
      9  *
     10  *     * Redistributions of source code must retain the above copyright
     11  *       notice, this list of conditions and the following disclaimer.
     12  *     * Redistributions in binary form must reproduce the above
     13  *       copyright notice, this list of conditions and the following
     14  *       disclaimer in the documentation and/or other materials
     15  *       provided with the distribution.
     16  *     * Neither the name of the "Oracle America, Inc." nor the names of its
     17  *       contributors may be used to endorse or promote products derived
     18  *       from this software without specific prior written permission.
     19  *
     20  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     21  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     22  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
     23  *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
     24  *   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     25  *   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  *   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
     27  *   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     28  *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     29  *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     30  *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 #include <sys/cdefs.h>
     35 #if defined(LIBC_SCCS) && !defined(lint)
     36 #if 0
     37 static char *sccsid = "@(#)pmap_clnt.c 1.37 87/08/11 Copyr 1984 Sun Micro";
     38 static char *sccsid = "@(#)pmap_clnt.c	2.2 88/08/01 4.0 RPCSRC";
     39 #else
     40 __RCSID("$NetBSD: pmap_clnt.c,v 1.19 2013/03/11 20:19:29 tron Exp $");
     41 #endif
     42 #endif
     43 
     44 /*
     45  * pmap_clnt.c
     46  * Client interface to pmap rpc service.
     47  *
     48  * Copyright (C) 1984, Sun Microsystems, Inc.
     49  */
     50 
     51 #include "namespace.h"
     52 
     53 #include <unistd.h>
     54 
     55 #include <rpc/rpc.h>
     56 #include <rpc/pmap_prot.h>
     57 #include <rpc/pmap_clnt.h>
     58 #include <rpc/nettype.h>
     59 
     60 #include <stdio.h>
     61 #include <stdlib.h>
     62 
     63 #include "rpc_internal.h"
     64 
     65 #ifdef __weak_alias
     66 __weak_alias(pmap_set,_pmap_set)
     67 __weak_alias(pmap_unset,_pmap_unset)
     68 #endif
     69 
     70 bool_t
     71 pmap_set(u_long program, u_long version, int protocol, int port)
     72 {
     73 	bool_t rslt;
     74 	struct netbuf *na;
     75 	struct netconfig *nconf;
     76 	char buf[32];
     77 
     78 	if ((protocol != IPPROTO_UDP) && (protocol != IPPROTO_TCP)) {
     79 		return (FALSE);
     80 	}
     81 	nconf = __rpc_getconfip(protocol == IPPROTO_UDP ? "udp" : "tcp");
     82 	if (nconf == NULL) {
     83 		return (FALSE);
     84 	}
     85 	snprintf(buf, sizeof buf, "0.0.0.0.%d.%d",
     86 	    (((u_int32_t)port) >> 8) & 0xff, port & 0xff);
     87 	na = uaddr2taddr(nconf, buf);
     88 	if (na == NULL) {
     89 		freenetconfigent(nconf);
     90 		return (FALSE);
     91 	}
     92 	rslt = rpcb_set((rpcprog_t)program, (rpcvers_t)version, nconf, na);
     93 	free(na);
     94 	freenetconfigent(nconf);
     95 	return (rslt);
     96 }
     97 
     98 /*
     99  * Remove the mapping between program, version and port.
    100  * Calls the pmap service remotely to do the un-mapping.
    101  */
    102 bool_t
    103 pmap_unset(u_long program, u_long version)
    104 {
    105 	struct netconfig *nconf;
    106 	bool_t udp_rslt = FALSE;
    107 	bool_t tcp_rslt = FALSE;
    108 
    109 	nconf = __rpc_getconfip("udp");
    110 	if (nconf != NULL) {
    111 		udp_rslt = rpcb_unset((rpcprog_t)program, (rpcvers_t)version,
    112 		    nconf);
    113 		freenetconfigent(nconf);
    114 	}
    115 	nconf = __rpc_getconfip("tcp");
    116 	if (nconf != NULL) {
    117 		tcp_rslt = rpcb_unset((rpcprog_t)program, (rpcvers_t)version,
    118 		    nconf);
    119 		freenetconfigent(nconf);
    120 	}
    121 	/*
    122 	 * XXX: The call may still succeed even if only one of the
    123 	 * calls succeeded.  This was the best that could be
    124 	 * done for backward compatibility.
    125 	 */
    126 	return (tcp_rslt || udp_rslt);
    127 }
    128