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/*
* 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
*/
/*
* Copyright (C) 1984, Sun Microsystems, Inc.
*/
/*
* pmap_clnt.c
* Client interface to pmap rpc service.
*/
#include <stdio.h>
#include <unistd.h>
#include <libintl.h>
#include <net/if.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <rpc/rpc.h>
#include <rpc/pmap_prot.h>
#include <rpc/pmap_clnt.h>
/*
* Same as get_myaddress, but we try to use the loopback
* interface. portmap caches interfaces, and on DHCP clients,
* it could be that only loopback is started at this time.
*/
static void
__get_myaddress (struct sockaddr_in *addr)
{
int s;
char buf[BUFSIZ];
struct ifconf ifc;
struct ifreq ifreq, *ifr;
int len, loopback = 1;
if ((s = __socket (AF_INET, SOCK_DGRAM, 0)) < 0)
{
perror ("__get_myaddress: socket");
exit (1);
}
ifc.ifc_len = sizeof (buf);
ifc.ifc_buf = buf;
if (__ioctl (s, SIOCGIFCONF, (char *) &ifc) < 0)
{
perror (_("__get_myaddress: ioctl (get interface configuration)"));
exit (1);
}
again:
ifr = ifc.ifc_req;
for (len = ifc.ifc_len; len; len -= sizeof ifreq)
{
ifreq = *ifr;
if (__ioctl (s, SIOCGIFFLAGS, (char *) &ifreq) < 0)
{
perror ("__get_myaddress: ioctl");
exit (1);
}
if ((ifreq.ifr_flags & IFF_UP) && (ifr->ifr_addr.sa_family == AF_INET)
&& ((ifreq.ifr_flags & IFF_LOOPBACK) || (loopback == 0)))
{
*addr = *((struct sockaddr_in *) &ifr->ifr_addr);
addr->sin_port = htons (PMAPPORT);
__close (s);
return;
}
ifr++;
}
if (loopback == 1)
{
loopback = 0;
goto again;
}
__close (s);
}
static const struct timeval timeout = {5, 0};
static const struct timeval tottimeout = {60, 0};
/*
* Set a mapping between program,version and port.
* Calls the pmap service remotely to do the mapping.
*/
bool_t
pmap_set (u_long program, u_long version, int protocol, u_short port)
{
struct sockaddr_in myaddress;
int socket = -1;
CLIENT *client;
struct pmap parms;
bool_t rslt;
__get_myaddress (&myaddress);
client = clntudp_bufcreate (&myaddress, PMAPPROG, PMAPVERS,
timeout, &socket, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
if (client == (CLIENT *) NULL)
return (FALSE);
parms.pm_prog = program;
parms.pm_vers = version;
parms.pm_prot = protocol;
parms.pm_port = port;
if (CLNT_CALL (client, PMAPPROC_SET, (xdrproc_t)xdr_pmap, (caddr_t)&parms,
(xdrproc_t)xdr_bool, (caddr_t)&rslt,
tottimeout) != RPC_SUCCESS)
{
clnt_perror (client, _("Cannot register service"));
return FALSE;
}
CLNT_DESTROY (client);
/* (void)close(socket); CLNT_DESTROY closes it */
return rslt;
}
/*
* Remove the mapping between program,version and port.
* Calls the pmap service remotely to do the un-mapping.
*/
bool_t
pmap_unset (u_long program, u_long version)
{
struct sockaddr_in myaddress;
int socket = -1;
CLIENT *client;
struct pmap parms;
bool_t rslt;
__get_myaddress (&myaddress);
client = clntudp_bufcreate (&myaddress, PMAPPROG, PMAPVERS,
timeout, &socket, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
if (client == (CLIENT *) NULL)
return FALSE;
parms.pm_prog = program;
parms.pm_vers = version;
parms.pm_port = parms.pm_prot = 0;
CLNT_CALL (client, PMAPPROC_UNSET, (xdrproc_t)xdr_pmap, (caddr_t)&parms,
(xdrproc_t)xdr_bool, (caddr_t)&rslt, tottimeout);
CLNT_DESTROY (client);
/* (void)close(socket); CLNT_DESTROY already closed it */
return rslt;
}
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