2.3.90-2
[glibc/history.git] / sunrpc / pm_getport.c
blob2d309841f3d47cc100da102c51af4c5111cab380
1 /* @(#)pmap_getport.c 2.2 88/08/01 4.0 RPCSRC */
2 /*
3 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
4 * unrestricted use provided that this legend is included on all tape
5 * media and as a part of the software program in whole or part. Users
6 * may copy or modify Sun RPC without charge, but are not authorized
7 * to license or distribute it to anyone else except as part of a product or
8 * program developed by the user.
10 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
11 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
12 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
14 * Sun RPC is provided with no support and without any obligation on the
15 * part of Sun Microsystems, Inc. to assist in its use, correction,
16 * modification or enhancement.
18 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
19 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
20 * OR ANY PART THEREOF.
22 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
23 * or profits or other special, indirect and consequential damages, even if
24 * Sun has been advised of the possibility of such damages.
26 * Sun Microsystems, Inc.
27 * 2550 Garcia Avenue
28 * Mountain View, California 94043
30 #if !defined(lint) && defined(SCCSIDS)
31 static char sccsid[] = "@(#)pmap_getport.c 1.9 87/08/11 Copyr 1984 Sun Micro";
32 #endif
35 * pmap_getport.c
36 * Client interface to pmap rpc service.
38 * Copyright (C) 1984, Sun Microsystems, Inc.
41 #include <stdbool.h>
42 #include <unistd.h>
43 #include <rpc/rpc.h>
44 #include <rpc/pmap_prot.h>
45 #include <rpc/pmap_clnt.h>
46 #include <sys/socket.h>
48 static const struct timeval timeout =
49 {5, 0};
50 static const struct timeval tottimeout =
51 {60, 0};
54 * Create a socket that is locally bound to a non-reserve port. For
55 * any failures, -1 is returned which will cause the RPC code to
56 * create the socket.
58 int
59 internal_function
60 __get_socket (struct sockaddr_in *saddr)
62 int so = __socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
63 if (so < 0)
64 return -1;
66 struct sockaddr_in laddr;
67 socklen_t namelen = sizeof (laddr);
68 laddr.sin_family = AF_INET;
69 laddr.sin_port = 0;
70 laddr.sin_addr.s_addr = htonl (INADDR_ANY);
72 int cc = __bind (so, (struct sockaddr *) &laddr, namelen);
73 if (__builtin_expect (cc < 0, 0))
75 fail:
76 __close (so);
77 return -1;
80 cc = __connect (so, (struct sockaddr *) saddr, namelen);
81 if (__builtin_expect (cc < 0, 0))
82 goto fail;
84 return so;
89 * Find the mapped port for program,version.
90 * Calls the pmap service remotely to do the lookup.
91 * Returns 0 if no map exists.
93 u_short
94 pmap_getport (address, program, version, protocol)
95 struct sockaddr_in *address;
96 u_long program;
97 u_long version;
98 u_int protocol;
100 u_short port = 0;
101 int socket = -1;
102 CLIENT *client;
103 struct pmap parms;
104 bool closeit = false;
106 address->sin_port = htons (PMAPPORT);
107 if (protocol == IPPROTO_TCP)
109 /* Don't need a reserved port to get ports from the portmapper. */
110 socket = __get_socket(address);
111 if (socket != -1)
112 closeit = true;
113 client = INTUSE(clnttcp_create) (address, PMAPPROG, PMAPVERS, &socket,
114 RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
116 else
117 client = INTUSE(clntudp_bufcreate) (address, PMAPPROG, PMAPVERS, timeout,
118 &socket, RPCSMALLMSGSIZE,
119 RPCSMALLMSGSIZE);
120 if (client != (CLIENT *) NULL)
122 struct rpc_createerr *ce = &get_rpc_createerr ();
123 parms.pm_prog = program;
124 parms.pm_vers = version;
125 parms.pm_prot = protocol;
126 parms.pm_port = 0; /* not needed or used */
127 if (CLNT_CALL (client, PMAPPROC_GETPORT, (xdrproc_t)INTUSE(xdr_pmap),
128 (caddr_t)&parms, (xdrproc_t)INTUSE(xdr_u_short),
129 (caddr_t)&port, tottimeout) != RPC_SUCCESS)
131 ce->cf_stat = RPC_PMAPFAILURE;
132 clnt_geterr (client, &ce->cf_error);
134 else if (port == 0)
136 ce->cf_stat = RPC_PROGNOTREGISTERED;
138 CLNT_DESTROY (client);
140 /* We only need to close the socket here if we opened it. */
141 if (closeit)
142 (void) __close (socket);
143 address->sin_port = 0;
144 return port;
146 libc_hidden_def (pmap_getport)