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/* $OpenBSD: pmap_getport.c,v 1.13 2015/09/13 15:36:56 guenther Exp $ */ |
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/* |
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* Copyright (c) 2010, Oracle America, Inc. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer in the documentation and/or other materials |
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* provided with the distribution. |
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* * Neither the name of the "Oracle America, Inc." nor the names of its |
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* contributors may be used to endorse or promote products derived |
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* from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, |
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE |
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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/* |
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* pmap_getport.c |
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* Client interface to pmap rpc service. |
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*/ |
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#include <unistd.h> |
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#include <rpc/rpc.h> |
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#include <rpc/pmap_prot.h> |
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#include <rpc/pmap_clnt.h> |
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#include <sys/socket.h> |
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#include <net/if.h> |
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static struct timeval timeout = { 5, 0 }; |
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static struct timeval tottimeout = { 60, 0 }; |
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/* |
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* Find the mapped port for program,version. |
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* Calls the pmap service remotely to do the lookup. |
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* Returns 0 if no map exists. |
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*/ |
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u_short |
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pmap_getport(struct sockaddr_in *address, u_long program, u_long version, |
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u_int protocol) |
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{ |
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u_short port = 0; |
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int sock = -1; |
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CLIENT *client; |
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struct pmap parms; |
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address->sin_port = htons(PMAPPORT); |
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client = clntudp_bufcreate(address, PMAPPROG, |
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PMAPVERS, timeout, &sock, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE); |
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if (client != NULL) { |
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parms.pm_prog = program; |
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parms.pm_vers = version; |
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parms.pm_prot = protocol; |
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parms.pm_port = 0; /* not needed or used */ |
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if (CLNT_CALL(client, PMAPPROC_GETPORT, xdr_pmap, &parms, |
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xdr_u_short, &port, tottimeout) != RPC_SUCCESS){ |
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rpc_createerr.cf_stat = RPC_PMAPFAILURE; |
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clnt_geterr(client, &rpc_createerr.cf_error); |
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} else if (port == 0) { |
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rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED; |
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} |
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CLNT_DESTROY(client); |
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} |
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address->sin_port = 0; |
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return (port); |
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} |
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DEF_WEAK(pmap_getport); |