/* * 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 bool_t __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 TRUE; } ifr++; } if (loopback == 1) { loopback = 0; goto again; } __close (s); return FALSE; } 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; if (!__get_myaddress (&myaddress)) return FALSE; 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; if (!__get_myaddress (&myaddress)) return FALSE; 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; }