rpc.subproj/pmap_getport.c

   1 /*
   2  * Copyright (c) 1999-2018 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.1 (the "License").  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License.
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /*
  25  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
  26  * unrestricted use provided that this legend is included on all tape
  27  * media and as a part of the software program in whole or part.  Users
  28  * may copy or modify Sun RPC without charge, but are not authorized
  29  * to license or distribute it to anyone else except as part of a product or
  30  * program developed by the user.
  31  *
  32  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  33  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  34  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  35  *
  36  * Sun RPC is provided with no support and without any obligation on the
  37  * part of Sun Microsystems, Inc. to assist in its use, correction,
  38  * modification or enhancement.
  39  *
  40  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  41  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  42  * OR ANY PART THEREOF.
  43  *
  44  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  45  * or profits or other special, indirect and consequential damages, even if
  46  * Sun has been advised of the possibility of such damages.
  47  *
  48  * Sun Microsystems, Inc.
  49  * 2550 Garcia Avenue
  50  * Mountain View, California  94043
  51  */
  52
  53 #if defined(LIBC_SCCS) && !defined(lint)
  54 /*static char *sccsid = "from: @(#)pmap_getport.c 1.9 87/08/11 Copyr 1984 Sun Micro";*/
  55 /*static char *sccsid = "from: @(#)pmap_getport.c       2.2 88/08/01 4.0 RPCSRC";*/
  56 static char *rcsid = "$Id: pmap_getport.c,v 1.4 2004/12/19 22:45:44 zarzycki Exp $";
  57 #endif
  58
  59 /*
  60  * pmap_getport.c
  61  * Client interface to pmap rpc service.
  62  *
  63  * Copyright (C) 1984, Sun Microsystems, Inc.
  64  */
  65
  66 #include "libinfo_common.h"
  67
  68 #include <unistd.h>
  69 #include <rpc/rpc.h>
  70 #include <rpc/pmap_prot.h>
  71 #include <rpc/pmap_clnt.h>
  72 #include <sys/socket.h>
  73 #include <net/if.h>
  74
  75 static struct timeval default_timeout = { 5, 0 };
  76
  77 /*
  78  * Find the mapped port for program,version.
  79  * Calls the pmap service remotely to do the lookup.
  80  * Returns 0 if no map exists.
  81  */
  82 u_short
  83 pmap_getport_timeout(struct sockaddr_in *address, uint32_t program, uint32_t version, uint32_t protocol, struct timeval *timeout, struct timeval *totaltimeout)
  84 {
  85         u_short port;
  86         int socket;
  87         register CLIENT *client;
  88         struct pmap parms;
  89         enum clnt_stat status;
  90         struct timeval real_t, real_tt;
  91
  92         real_t = default_timeout;
  93         if (timeout != NULL) real_t = *timeout;
  94
  95         real_tt = default_timeout;
  96         if (totaltimeout != NULL) real_tt = *totaltimeout;
  97
  98         port = 0;
  99         socket = -1;
 100         address->sin_port = htons(PMAPPORT);
 101         client = clntudp_bufcreate(address, PMAPPROG, PMAPVERS, real_t, &socket, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
 102         if (client != NULL)
 103         {
 104                 parms.pm_prog = program;
 105                 parms.pm_vers = version;
 106                 parms.pm_prot = protocol;
 107                 /* not needed or used */
 108                 parms.pm_port = 0;
 109
 110                 status = CLNT_CALL(client, PMAPPROC_GETPORT, (xdrproc_t)xdr_pmap, &parms, (xdrproc_t)xdr_u_short, &port, real_tt);
 111                 if (status != RPC_SUCCESS)
 112                 {
 113                         rpc_createerr.cf_stat = RPC_PMAPFAILURE;
 114                         clnt_geterr(client, &rpc_createerr.cf_error);
 115                 }
 116                 else if (port == 0)
 117                 {
 118                         rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
 119                 }
 120
 121                 CLNT_DESTROY(client);
 122         }
 123
 124         close(socket);
 125         address->sin_port = 0;
 126         return port;
 127 }
 128
 129 LIBINFO_EXPORT
 130 u_short
 131 pmap_getport(address, program, version, protocol)
 132 #ifdef __LP64__
 133         struct sockaddr_in *address;
 134         uint32_t program;
 135         uint32_t version;
 136         uint32_t protocol;
 137 #else
 138         struct sockaddr_in *address;
 139         u_long program;
 140         u_long version;
 141         u_int protocol;
 142 #endif
 143 {
 144         return pmap_getport_timeout(address, (uint32_t)program, (uint32_t)version, (uint32_t)protocol, NULL, NULL);
 145 }
 146