BSD 4_3_Tahoe release

[unix-history] / usr / src / new / sunrpc / pmap_clnt.c

/*
* 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
*/
#ifndef lint
static char sccsid[] = "@(#)pmap_clnt.c 1.4 85/04/08 Copyr 1984 Sun Micro";
#endif

/*
* pmap_clnt.c
* Client interface to pmap rpc service.
*
* Copyright (C) 1984, Sun Microsystems, Inc.
*/

#include "types.h"
#include <netinet/in.h>
#include "xdr.h"
#include "auth.h"
#include "clnt.h"
#include "rpc_msg.h"
#include "pmap_prot.h" 
#include "pmap_clnt.h"
#include <sys/socket.h>
#include <sys/time.h>
#include <stdio.h>
#include <net/if.h>
#include <sys/ioctl.h>
#include <arpa/inet.h>
#define NAMELEN 255

static struct timeval timeout = { 5, 0 };
static struct timeval tottimeout = { 60, 0 };
static struct sockaddr_in myaddress;

void clnt_perror();


/*
* Set a mapping between program,version and port.
* Calls the pmap service remotely to do the mapping.
*/
bool_t
pmap_set(program, version, protocol, port)
       u_long program;
       u_long version;
       u_long protocol;
       u_short port;
{
       struct sockaddr_in myaddress;
       int socket = -1;
       register CLIENT *client;
       struct pmap parms;
       bool_t rslt;

       get_myaddress(&myaddress);
       client = clntudp_create(&myaddress, PMAPPROG, PMAPVERS,
           timeout, &socket);
       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, xdr_pmap, &parms, xdr_bool, &rslt,
           tottimeout) != RPC_SUCCESS) {
               clnt_perror(client, "Cannot register service");
               return (FALSE);
       }
       CLNT_DESTROY(client);
       (void)close(socket);
       return (rslt);
}

/*
* Remove the mapping between program,version and port.
* Calls the pmap service remotely to do the un-mapping.
*/
bool_t
pmap_unset(program, version)
       u_long program;
       u_long version;
{
       struct sockaddr_in myaddress;
       int socket = -1;
       register CLIENT *client;
       struct pmap parms;
       bool_t rslt;

       get_myaddress(&myaddress);
       client = clntudp_create(&myaddress, PMAPPROG, PMAPVERS,
           timeout, &socket);
       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, xdr_pmap, &parms, xdr_bool, &rslt,
           tottimeout);
       CLNT_DESTROY(client);
       (void)close(socket);
       return (rslt);
}

/* 
* don't use gethostbyname, which would invoke yellow pages
*/
get_myaddress(addr)
       struct sockaddr_in *addr;
{
       int s;
       char buf[BUFSIZ];
       struct ifconf ifc;
       struct ifreq ifreq, *ifr;
       int len;

       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);
       }
       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) {
                       *addr = *((struct sockaddr_in *)&ifr->ifr_addr);
                       addr->sin_port = htons(PMAPPORT);
                       break;
               }
               ifr++;
       }
       close(s);
}