3 * Client interface to pmap rpc service.
5 * Copyright (c) 2010, Oracle America, Inc.
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8 * modification, are permitted provided that the following conditions are
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12 * notice, this list of conditions and the following disclaimer.
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14 * copyright notice, this list of conditions and the following
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16 * provided with the distribution.
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21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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38 #include <rpc/pmap_prot.h>
39 #include <rpc/pmap_clnt.h>
40 #include <sys/socket.h>
43 * Create a socket that is locally bound to a non-reserve port. For
44 * any failures, -1 is returned which will cause the RPC code to
49 __get_socket (struct sockaddr_in *saddr)
51 int so = __socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
55 struct sockaddr_in laddr;
56 socklen_t namelen = sizeof (laddr);
57 laddr.sin_family = AF_INET;
59 laddr.sin_addr.s_addr = htonl (INADDR_ANY);
61 int cc = __bind (so, (struct sockaddr *) &laddr, namelen);
62 if (__builtin_expect (cc < 0, 0))
69 cc = __connect (so, (struct sockaddr *) saddr, namelen);
70 if (__builtin_expect (cc < 0, 0))
78 * Find the mapped port for program,version.
79 * Internal version with additional parameters.
80 * Calls the pmap service remotely to do the lookup.
81 * Returns 0 if no map exists.
85 __libc_rpc_getport (address, program, version, protocol, timeout_sec,
87 struct sockaddr_in *address;
92 time_t tottimeout_sec;
94 const struct timeval timeout = {timeout_sec, 0};
95 const struct timeval tottimeout = {tottimeout_sec, 0};
101 bool closeit = false;
103 address->sin_port = htons (PMAPPORT);
104 if (protocol == IPPROTO_TCP)
106 /* Don't need a reserved port to get ports from the portmapper. */
107 socket = __get_socket(address);
110 client = clnttcp_create (address, PMAPPROG, PMAPVERS, &socket,
111 RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
114 client = clntudp_bufcreate (address, PMAPPROG, PMAPVERS, timeout,
115 &socket, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
116 if (client != (CLIENT *) NULL)
118 struct rpc_createerr *ce = &get_rpc_createerr ();
119 parms.pm_prog = program;
120 parms.pm_vers = version;
121 parms.pm_prot = protocol;
122 parms.pm_port = 0; /* not needed or used */
123 if (CLNT_CALL (client, PMAPPROC_GETPORT, (xdrproc_t)xdr_pmap,
124 (caddr_t)&parms, (xdrproc_t)xdr_u_short,
125 (caddr_t)&port, tottimeout) != RPC_SUCCESS)
127 ce->cf_stat = RPC_PMAPFAILURE;
128 clnt_geterr (client, &ce->cf_error);
132 ce->cf_stat = RPC_PROGNOTREGISTERED;
134 CLNT_DESTROY (client);
136 /* We only need to close the socket here if we opened it. */
138 (void) __close (socket);
139 address->sin_port = 0;
142 #ifdef EXPORT_RPC_SYMBOLS
143 libc_hidden_def (__libc_rpc_getport)
145 libc_hidden_nolink (__libc_rpc_getport, GLIBC_PRIVATE)
150 * Find the mapped port for program,version.
151 * Calls the pmap service remotely to do the lookup.
152 * Returns 0 if no map exists.
155 pmap_getport (address, program, version, protocol)
156 struct sockaddr_in *address;
161 return __libc_rpc_getport (address, program, version, protocol, 5, 60);
163 libc_hidden_nolink (pmap_getport, GLIBC_2_0)