mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-21 01:12:26 +08:00
147 lines
4.1 KiB
C
147 lines
4.1 KiB
C
/* @(#)pmap_getport.c 2.2 88/08/01 4.0 RPCSRC */
|
|
/*
|
|
* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
|
|
* unrestricted use provided that this legend is included on all tape
|
|
* media and as a part of the software program in whole or part. Users
|
|
* may copy or modify Sun RPC without charge, but are not authorized
|
|
* to license or distribute it to anyone else except as part of a product or
|
|
* program developed by the user.
|
|
*
|
|
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
|
|
* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
|
|
*
|
|
* Sun RPC is provided with no support and without any obligation on the
|
|
* part of Sun Microsystems, Inc. to assist in its use, correction,
|
|
* modification or enhancement.
|
|
*
|
|
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
|
|
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
|
|
* OR ANY PART THEREOF.
|
|
*
|
|
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
|
|
* or profits or other special, indirect and consequential damages, even if
|
|
* Sun has been advised of the possibility of such damages.
|
|
*
|
|
* Sun Microsystems, Inc.
|
|
* 2550 Garcia Avenue
|
|
* Mountain View, California 94043
|
|
*/
|
|
#if !defined(lint) && defined(SCCSIDS)
|
|
static char sccsid[] = "@(#)pmap_getport.c 1.9 87/08/11 Copyr 1984 Sun Micro";
|
|
#endif
|
|
|
|
/*
|
|
* pmap_getport.c
|
|
* Client interface to pmap rpc service.
|
|
*
|
|
* Copyright (C) 1984, Sun Microsystems, Inc.
|
|
*/
|
|
|
|
#include <stdbool.h>
|
|
#include <unistd.h>
|
|
#include <rpc/rpc.h>
|
|
#include <rpc/pmap_prot.h>
|
|
#include <rpc/pmap_clnt.h>
|
|
#include <sys/socket.h>
|
|
|
|
static const struct timeval timeout =
|
|
{5, 0};
|
|
static const struct timeval tottimeout =
|
|
{60, 0};
|
|
|
|
/*
|
|
* Create a socket that is locally bound to a non-reserve port. For
|
|
* any failures, -1 is returned which will cause the RPC code to
|
|
* create the socket.
|
|
*/
|
|
int
|
|
internal_function
|
|
__get_socket (struct sockaddr_in *saddr)
|
|
{
|
|
int so = __socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
|
|
if (so < 0)
|
|
return -1;
|
|
|
|
struct sockaddr_in laddr;
|
|
socklen_t namelen = sizeof (laddr);
|
|
laddr.sin_family = AF_INET;
|
|
laddr.sin_port = 0;
|
|
laddr.sin_addr.s_addr = htonl (INADDR_ANY);
|
|
|
|
int cc = __bind (so, (struct sockaddr *) &laddr, namelen);
|
|
if (__builtin_expect (cc < 0, 0))
|
|
{
|
|
fail:
|
|
__close (so);
|
|
return -1;
|
|
}
|
|
|
|
cc = __connect (so, (struct sockaddr *) saddr, namelen);
|
|
if (__builtin_expect (cc < 0, 0))
|
|
goto fail;
|
|
|
|
return so;
|
|
}
|
|
|
|
|
|
/*
|
|
* Find the mapped port for program,version.
|
|
* Calls the pmap service remotely to do the lookup.
|
|
* Returns 0 if no map exists.
|
|
*/
|
|
u_short
|
|
pmap_getport (address, program, version, protocol)
|
|
struct sockaddr_in *address;
|
|
u_long program;
|
|
u_long version;
|
|
u_int protocol;
|
|
{
|
|
u_short port = 0;
|
|
int socket = -1;
|
|
CLIENT *client;
|
|
struct pmap parms;
|
|
bool closeit = false;
|
|
|
|
address->sin_port = htons (PMAPPORT);
|
|
if (protocol == IPPROTO_TCP)
|
|
{
|
|
/* Don't need a reserved port to get ports from the portmapper. */
|
|
socket = __get_socket(address);
|
|
if (socket != -1)
|
|
closeit = true;
|
|
client = INTUSE(clnttcp_create) (address, PMAPPROG, PMAPVERS, &socket,
|
|
RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
|
|
}
|
|
else
|
|
client = INTUSE(clntudp_bufcreate) (address, PMAPPROG, PMAPVERS, timeout,
|
|
&socket, RPCSMALLMSGSIZE,
|
|
RPCSMALLMSGSIZE);
|
|
if (client != (CLIENT *) NULL)
|
|
{
|
|
struct rpc_createerr *ce = &get_rpc_createerr ();
|
|
parms.pm_prog = program;
|
|
parms.pm_vers = version;
|
|
parms.pm_prot = protocol;
|
|
parms.pm_port = 0; /* not needed or used */
|
|
if (CLNT_CALL (client, PMAPPROC_GETPORT, (xdrproc_t)INTUSE(xdr_pmap),
|
|
(caddr_t)&parms, (xdrproc_t)INTUSE(xdr_u_short),
|
|
(caddr_t)&port, tottimeout) != RPC_SUCCESS)
|
|
{
|
|
ce->cf_stat = RPC_PMAPFAILURE;
|
|
clnt_geterr (client, &ce->cf_error);
|
|
}
|
|
else if (port == 0)
|
|
{
|
|
ce->cf_stat = RPC_PROGNOTREGISTERED;
|
|
}
|
|
CLNT_DESTROY (client);
|
|
}
|
|
/* We only need to close the socket here if we opened it. */
|
|
if (closeit)
|
|
(void) __close (socket);
|
|
address->sin_port = 0;
|
|
return port;
|
|
}
|
|
libc_hidden_def (pmap_getport)
|