1 /*
2 * Copyright (c) 2006-2021, RT-Thread Development Team
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 *
6 * Change Logs:
7 * Date Author Notes
8 */
9 #include "pmap.h"
10 #include "clnt.h"
11 #include <rpc/rpc.h>
12
13 static struct timeval timeout = { 5, 0 };
14 static struct timeval tottimeout = { 60, 0 };
15
16
xdr_pmap(XDR * xdrs,struct pmap * regs)17 bool_t xdr_pmap(XDR *xdrs, struct pmap *regs)
18 {
19 if (xdr_u_long(xdrs, ®s->pm_prog) &&
20 xdr_u_long(xdrs, ®s->pm_vers) &&
21 xdr_u_long(xdrs, ®s->pm_prot))
22 return (xdr_u_long(xdrs, ®s->pm_port));
23 return (FALSE);
24 }
25
26 /*
27 * Find the mapped port for program,version.
28 * Calls the pmap service remotely to do the lookup.
29 * Returns 0 if no map exists.
30 */
pmap_getport(struct sockaddr_in * address,unsigned long program,unsigned long version,unsigned int protocol)31 unsigned short pmap_getport(struct sockaddr_in *address, unsigned long program, unsigned long version, unsigned int protocol)
32 {
33 unsigned short port = 0;
34 int socket = -1;
35 register CLIENT *client = RT_NULL;
36 struct pmap parms;
37
38 address->sin_port = htons((unsigned short)PMAPPORT);
39 if (protocol == IPPROTO_UDP)
40 client = clntudp_bufcreate(address, PMAPPROG, PMAPVERS, timeout,
41 &socket, RPCSMALLMSGSIZE,
42 RPCSMALLMSGSIZE);
43
44 if (client != (CLIENT *) NULL)
45 {
46 parms.pm_prog = program;
47 parms.pm_vers = version;
48 parms.pm_prot = protocol;
49 parms.pm_port = 0; /* not needed or used */
50 if (CLNT_CALL(client, PMAPPROC_GETPORT, (xdrproc_t)xdr_pmap, (char*)&parms,
51 (xdrproc_t)xdr_u_short, (char*)&port, tottimeout) != RPC_SUCCESS)
52 {
53 rt_kprintf("pmap failure\n");
54 }
55 CLNT_DESTROY(client);
56 }
57
58 (void) lwip_close(socket);
59 address->sin_port = 0;
60
61 return (port);
62 }
63