lib/libc/rpc/pmap_clnt.c

   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 }