174462Salfred/* $NetBSD: rpcb_clnt.c,v 1.6 2000/07/16 06:41:43 itojun Exp $ */ 274462Salfred 374462Salfred/* 499775Salfred * The contents of this file are subject to the Sun Standards 599775Salfred * License Version 1.0 the (the "License";) You may not use 699775Salfred * this file except in compliance with the License. You may 799775Salfred * obtain a copy of the License at lib/libc/rpc/LICENSE 899775Salfred * 999775Salfred * Software distributed under the License is distributed on 1099775Salfred * an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either 1199775Salfred * express or implied. See the License for the specific 1299775Salfred * language governing rights and limitations under the License. 1399775Salfred * 1499775Salfred * The Original Code is Copyright 1998 by Sun Microsystems, Inc 1599775Salfred * 1699775Salfred * The Initial Developer of the Original Code is: Sun 1799775Salfred * Microsystems, Inc. 1899775Salfred * 1999775Salfred * All Rights Reserved. 2099775Salfred * 2174462Salfred * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 2274462Salfred * unrestricted use provided that this legend is included on all tape 2374462Salfred * media and as a part of the software program in whole or part. Users 2474462Salfred * may copy or modify Sun RPC without charge, but are not authorized 2574462Salfred * to license or distribute it to anyone else except as part of a product or 2674462Salfred * program developed by the user. 2774462Salfred * 2874462Salfred * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 2974462Salfred * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 3074462Salfred * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 3174462Salfred * 3274462Salfred * Sun RPC is provided with no support and without any obligation on the 3374462Salfred * part of Sun Microsystems, Inc. to assist in its use, correction, 3474462Salfred * modification or enhancement. 3574462Salfred * 3674462Salfred * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 3774462Salfred * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 3874462Salfred * OR ANY PART THEREOF. 3974462Salfred * 4074462Salfred * In no event will Sun Microsystems, Inc. be liable for any lost revenue 4174462Salfred * or profits or other special, indirect and consequential damages, even if 4274462Salfred * Sun has been advised of the possibility of such damages. 4374462Salfred * 4474462Salfred * Sun Microsystems, Inc. 4574462Salfred * 2550 Garcia Avenue 4674462Salfred * Mountain View, California 94043 4774462Salfred */ 4874462Salfred/* 4974462Salfred * Copyright (c) 1986-1991 by Sun Microsystems Inc. 5074462Salfred */ 5174462Salfred 5274462Salfred/* #ident "@(#)rpcb_clnt.c 1.27 94/04/24 SMI" */ 5374462Salfred 5474462Salfred 55136581Sobrien#if defined(LIBC_SCCS) && !defined(lint) 5674462Salfredstatic char sccsid[] = "@(#)rpcb_clnt.c 1.30 89/06/21 Copyr 1988 Sun Micro"; 5774462Salfred#endif 5892990Sobrien#include <sys/cdefs.h> 5992990Sobrien__FBSDID("$FreeBSD$"); 6074462Salfred 6174462Salfred/* 6274462Salfred * rpcb_clnt.c 6374462Salfred * interface to rpcbind rpc service. 6474462Salfred * 6574462Salfred * Copyright (C) 1988, Sun Microsystems, Inc. 6674462Salfred */ 6774462Salfred 6875094Siedowse#include "namespace.h" 6974462Salfred#include "reentrant.h" 7074462Salfred#include <sys/types.h> 7174462Salfred#include <sys/socket.h> 7274462Salfred#include <sys/un.h> 7374462Salfred#include <sys/utsname.h> 7474462Salfred#include <rpc/rpc.h> 7574462Salfred#include <rpc/rpcb_prot.h> 7674462Salfred#include <rpc/nettype.h> 7774462Salfred#include <netconfig.h> 7874462Salfred#ifdef PORTMAP 7974462Salfred#include <netinet/in.h> /* FOR IPPROTO_TCP/UDP definitions */ 8074462Salfred#include <rpc/pmap_prot.h> 8174462Salfred#endif /* PORTMAP */ 8274462Salfred#include <stdio.h> 8374462Salfred#include <errno.h> 8474462Salfred#include <stdlib.h> 8574462Salfred#include <string.h> 8674462Salfred#include <unistd.h> 8774462Salfred#include <netdb.h> 8874462Salfred#include <syslog.h> 8974462Salfred#include "un-namespace.h" 9074462Salfred 9174462Salfred#include "rpc_com.h" 92156090Sdeischen#include "mt_misc.h" 9374462Salfred 9474462Salfredstatic struct timeval tottimeout = { 60, 0 }; 9574462Salfredstatic const struct timeval rmttimeout = { 3, 0 }; 9699775Salfredstatic struct timeval rpcbrmttime = { 15, 0 }; 9774462Salfred 9892905Sobrienextern bool_t xdr_wrapstring(XDR *, char **); 9974462Salfred 10074462Salfredstatic const char nullstring[] = "\000"; 10174462Salfred 10274462Salfred#define CACHESIZE 6 10374462Salfred 10474462Salfredstruct address_cache { 10574462Salfred char *ac_host; 10674462Salfred char *ac_netid; 10774462Salfred char *ac_uaddr; 10874462Salfred struct netbuf *ac_taddr; 10974462Salfred struct address_cache *ac_next; 11074462Salfred}; 11174462Salfred 11274462Salfredstatic struct address_cache *front; 11374462Salfredstatic int cachesize; 11474462Salfred 11574462Salfred#define CLCR_GET_RPCB_TIMEOUT 1 11674462Salfred#define CLCR_SET_RPCB_TIMEOUT 2 11774462Salfred 11874462Salfred 11974462Salfredextern int __rpc_lowvers; 12074462Salfred 12192905Sobrienstatic struct address_cache *check_cache(const char *, const char *); 12292905Sobrienstatic void delete_cache(struct netbuf *); 12392941Sobrienstatic void add_cache(const char *, const char *, struct netbuf *, char *); 12492941Sobrienstatic CLIENT *getclnthandle(const char *, const struct netconfig *, char **); 12592905Sobrienstatic CLIENT *local_rpcb(void); 12692941Sobrienstatic struct netbuf *got_entry(rpcb_entry_list_ptr, const struct netconfig *); 12774462Salfred 12874462Salfred/* 12974462Salfred * This routine adjusts the timeout used for calls to the remote rpcbind. 13074462Salfred * Also, this routine can be used to set the use of portmapper version 2 13174462Salfred * only when doing rpc_broadcasts 13274462Salfred * These are private routines that may not be provided in future releases. 13374462Salfred */ 13474462Salfredbool_t 13574462Salfred__rpc_control(request, info) 13674462Salfred int request; 13774462Salfred void *info; 13874462Salfred{ 13974462Salfred switch (request) { 14074462Salfred case CLCR_GET_RPCB_TIMEOUT: 14174462Salfred *(struct timeval *)info = tottimeout; 14274462Salfred break; 14374462Salfred case CLCR_SET_RPCB_TIMEOUT: 14474462Salfred tottimeout = *(struct timeval *)info; 14574462Salfred break; 14674462Salfred case CLCR_SET_LOWVERS: 14774462Salfred __rpc_lowvers = *(int *)info; 14874462Salfred break; 14974462Salfred case CLCR_GET_LOWVERS: 15074462Salfred *(int *)info = __rpc_lowvers; 15174462Salfred break; 15274462Salfred default: 15374462Salfred return (FALSE); 15474462Salfred } 15574462Salfred return (TRUE); 15674462Salfred} 15774462Salfred 15874462Salfred/* 15974462Salfred * It might seem that a reader/writer lock would be more reasonable here. 16074462Salfred * However because getclnthandle(), the only user of the cache functions, 16174462Salfred * may do a delete_cache() operation if a check_cache() fails to return an 16274462Salfred * address useful to clnt_tli_create(), we may as well use a mutex. 16374462Salfred */ 16474462Salfred/* 16574462Salfred * As it turns out, if the cache lock is *not* a reader/writer lock, we will 16674462Salfred * block all clnt_create's if we are trying to connect to a host that's down, 16774462Salfred * since the lock will be held all during that time. 16874462Salfred */ 16974462Salfred 17074462Salfred/* 17174462Salfred * The routines check_cache(), add_cache(), delete_cache() manage the 17274462Salfred * cache of rpcbind addresses for (host, netid). 17374462Salfred */ 17474462Salfred 17574462Salfredstatic struct address_cache * 17674462Salfredcheck_cache(host, netid) 17774462Salfred const char *host, *netid; 17874462Salfred{ 17974462Salfred struct address_cache *cptr; 18074462Salfred 18174462Salfred /* READ LOCK HELD ON ENTRY: rpcbaddr_cache_lock */ 18274462Salfred 18374462Salfred for (cptr = front; cptr != NULL; cptr = cptr->ac_next) { 18474462Salfred if (!strcmp(cptr->ac_host, host) && 18574462Salfred !strcmp(cptr->ac_netid, netid)) { 18674462Salfred#ifdef ND_DEBUG 18774462Salfred fprintf(stderr, "Found cache entry for %s: %s\n", 18874462Salfred host, netid); 18974462Salfred#endif 19074462Salfred return (cptr); 19174462Salfred } 19274462Salfred } 19374462Salfred return ((struct address_cache *) NULL); 19474462Salfred} 19574462Salfred 19674462Salfredstatic void 19774462Salfreddelete_cache(addr) 19874462Salfred struct netbuf *addr; 19974462Salfred{ 20074462Salfred struct address_cache *cptr, *prevptr = NULL; 20174462Salfred 20274462Salfred /* WRITE LOCK HELD ON ENTRY: rpcbaddr_cache_lock */ 20374462Salfred for (cptr = front; cptr != NULL; cptr = cptr->ac_next) { 20474462Salfred if (!memcmp(cptr->ac_taddr->buf, addr->buf, addr->len)) { 20574462Salfred free(cptr->ac_host); 20674462Salfred free(cptr->ac_netid); 20774462Salfred free(cptr->ac_taddr->buf); 20874462Salfred free(cptr->ac_taddr); 20974462Salfred if (cptr->ac_uaddr) 21074462Salfred free(cptr->ac_uaddr); 21174462Salfred if (prevptr) 21274462Salfred prevptr->ac_next = cptr->ac_next; 21374462Salfred else 21474462Salfred front = cptr->ac_next; 21574462Salfred free(cptr); 21674462Salfred cachesize--; 21774462Salfred break; 21874462Salfred } 21974462Salfred prevptr = cptr; 22074462Salfred } 22174462Salfred} 22274462Salfred 22374462Salfredstatic void 22474462Salfredadd_cache(host, netid, taddr, uaddr) 22574462Salfred const char *host, *netid; 22674462Salfred char *uaddr; 22774462Salfred struct netbuf *taddr; 22874462Salfred{ 22974462Salfred struct address_cache *ad_cache, *cptr, *prevptr; 23074462Salfred 23174462Salfred ad_cache = (struct address_cache *) 23274462Salfred malloc(sizeof (struct address_cache)); 23374462Salfred if (!ad_cache) { 23474462Salfred return; 23574462Salfred } 23674462Salfred ad_cache->ac_host = strdup(host); 23774462Salfred ad_cache->ac_netid = strdup(netid); 23874462Salfred ad_cache->ac_uaddr = uaddr ? strdup(uaddr) : NULL; 23974462Salfred ad_cache->ac_taddr = (struct netbuf *)malloc(sizeof (struct netbuf)); 24074462Salfred if (!ad_cache->ac_host || !ad_cache->ac_netid || !ad_cache->ac_taddr || 24174462Salfred (uaddr && !ad_cache->ac_uaddr)) { 242162193Smbr goto out; 24374462Salfred } 24474462Salfred ad_cache->ac_taddr->len = ad_cache->ac_taddr->maxlen = taddr->len; 24574462Salfred ad_cache->ac_taddr->buf = (char *) malloc(taddr->len); 24674462Salfred if (ad_cache->ac_taddr->buf == NULL) { 247162193Smbrout: 248162193Smbr if (ad_cache->ac_host) 249162193Smbr free(ad_cache->ac_host); 250162193Smbr if (ad_cache->ac_netid) 251162193Smbr free(ad_cache->ac_netid); 252162193Smbr if (ad_cache->ac_uaddr) 253162193Smbr free(ad_cache->ac_uaddr); 254162193Smbr if (ad_cache->ac_taddr) 255162193Smbr free(ad_cache->ac_taddr); 256162193Smbr free(ad_cache); 25774462Salfred return; 25874462Salfred } 25974462Salfred memcpy(ad_cache->ac_taddr->buf, taddr->buf, taddr->len); 26074462Salfred#ifdef ND_DEBUG 26174462Salfred fprintf(stderr, "Added to cache: %s : %s\n", host, netid); 26274462Salfred#endif 26374462Salfred 26474462Salfred/* VARIABLES PROTECTED BY rpcbaddr_cache_lock: cptr */ 26574462Salfred 26674462Salfred rwlock_wrlock(&rpcbaddr_cache_lock); 26774462Salfred if (cachesize < CACHESIZE) { 26874462Salfred ad_cache->ac_next = front; 26974462Salfred front = ad_cache; 27074462Salfred cachesize++; 27174462Salfred } else { 27274462Salfred /* Free the last entry */ 27374462Salfred cptr = front; 27474462Salfred prevptr = NULL; 27574462Salfred while (cptr->ac_next) { 27674462Salfred prevptr = cptr; 27774462Salfred cptr = cptr->ac_next; 27874462Salfred } 27974462Salfred 28074462Salfred#ifdef ND_DEBUG 28174462Salfred fprintf(stderr, "Deleted from cache: %s : %s\n", 28274462Salfred cptr->ac_host, cptr->ac_netid); 28374462Salfred#endif 28474462Salfred free(cptr->ac_host); 28574462Salfred free(cptr->ac_netid); 28674462Salfred free(cptr->ac_taddr->buf); 28774462Salfred free(cptr->ac_taddr); 28874462Salfred if (cptr->ac_uaddr) 28974462Salfred free(cptr->ac_uaddr); 29074462Salfred 29174462Salfred if (prevptr) { 29274462Salfred prevptr->ac_next = NULL; 29374462Salfred ad_cache->ac_next = front; 29474462Salfred front = ad_cache; 29574462Salfred } else { 29674462Salfred front = ad_cache; 29774462Salfred ad_cache->ac_next = NULL; 29874462Salfred } 29974462Salfred free(cptr); 30074462Salfred } 30174462Salfred rwlock_unlock(&rpcbaddr_cache_lock); 30274462Salfred} 30374462Salfred 30474462Salfred/* 30574462Salfred * This routine will return a client handle that is connected to the 30681069Siedowse * rpcbind. If targaddr is non-NULL, the "universal address" of the 30781069Siedowse * host will be stored in *targaddr; the caller is responsible for 30881069Siedowse * freeing this string. 30981069Siedowse * On error, returns NULL and free's everything. 31074462Salfred */ 31174462Salfredstatic CLIENT * 31274462Salfredgetclnthandle(host, nconf, targaddr) 31374462Salfred const char *host; 31474462Salfred const struct netconfig *nconf; 31574462Salfred char **targaddr; 31674462Salfred{ 31774462Salfred CLIENT *client; 31874462Salfred struct netbuf *addr, taddr; 31974462Salfred struct netbuf addr_to_delete; 32074462Salfred struct __rpc_sockinfo si; 32174462Salfred struct addrinfo hints, *res, *tres; 32274462Salfred struct address_cache *ad_cache; 32374462Salfred char *tmpaddr; 32474462Salfred 32574462Salfred/* VARIABLES PROTECTED BY rpcbaddr_cache_lock: ad_cache */ 32674462Salfred 32774462Salfred /* Get the address of the rpcbind. Check cache first */ 32879726Siedowse client = NULL; 32974462Salfred addr_to_delete.len = 0; 33074462Salfred rwlock_rdlock(&rpcbaddr_cache_lock); 33190269Salfred ad_cache = NULL; 33290269Salfred if (host != NULL) 33390269Salfred ad_cache = check_cache(host, nconf->nc_netid); 33474462Salfred if (ad_cache != NULL) { 33574462Salfred addr = ad_cache->ac_taddr; 33674462Salfred client = clnt_tli_create(RPC_ANYFD, nconf, addr, 33774462Salfred (rpcprog_t)RPCBPROG, (rpcvers_t)RPCBVERS4, 0, 0); 33874462Salfred if (client != NULL) { 33974462Salfred if (targaddr) 34081069Siedowse *targaddr = strdup(ad_cache->ac_uaddr); 34174462Salfred rwlock_unlock(&rpcbaddr_cache_lock); 34274462Salfred return (client); 34374462Salfred } 34474462Salfred addr_to_delete.len = addr->len; 34574462Salfred addr_to_delete.buf = (char *)malloc(addr->len); 34674462Salfred if (addr_to_delete.buf == NULL) { 34774462Salfred addr_to_delete.len = 0; 34874462Salfred } else { 34974462Salfred memcpy(addr_to_delete.buf, addr->buf, addr->len); 35074462Salfred } 35174462Salfred } 35274462Salfred rwlock_unlock(&rpcbaddr_cache_lock); 35374462Salfred if (addr_to_delete.len != 0) { 35474462Salfred /* 35574462Salfred * Assume this may be due to cache data being 35674462Salfred * outdated 35774462Salfred */ 35874462Salfred rwlock_wrlock(&rpcbaddr_cache_lock); 35974462Salfred delete_cache(&addr_to_delete); 36074462Salfred rwlock_unlock(&rpcbaddr_cache_lock); 36174462Salfred free(addr_to_delete.buf); 36274462Salfred } 36374462Salfred if (!__rpc_nconf2sockinfo(nconf, &si)) { 36474462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 36574462Salfred return NULL; 36674462Salfred } 36774462Salfred 36874462Salfred memset(&hints, 0, sizeof hints); 36974462Salfred hints.ai_family = si.si_af; 37074462Salfred hints.ai_socktype = si.si_socktype; 37174462Salfred hints.ai_protocol = si.si_proto; 37274462Salfred 37374462Salfred#ifdef CLNT_DEBUG 37474462Salfred printf("trying netid %s family %d proto %d socktype %d\n", 37574462Salfred nconf->nc_netid, si.si_af, si.si_proto, si.si_socktype); 37674462Salfred#endif 37774462Salfred 37890269Salfred if (nconf->nc_protofmly != NULL && strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) { 37990269Salfred client = local_rpcb(); 38090269Salfred if (! client) { 38190269Salfred#ifdef ND_DEBUG 38290269Salfred clnt_pcreateerror("rpcbind clnt interface"); 38390269Salfred#endif 38490269Salfred return (NULL); 38590269Salfred } else { 38690269Salfred struct sockaddr_un sun; 387172259Smatteo if (targaddr) { 388172259Smatteo *targaddr = malloc(sizeof(sun.sun_path)); 389172259Smatteo if (*targaddr == NULL) { 390172259Smatteo CLNT_DESTROY(client); 391172259Smatteo return (NULL); 392172259Smatteo } 393172259Smatteo strncpy(*targaddr, _PATH_RPCBINDSOCK, 394172259Smatteo sizeof(sun.sun_path)); 395172259Smatteo } 39690269Salfred return (client); 39790269Salfred } 39890269Salfred } else { 39990269Salfred if (getaddrinfo(host, "sunrpc", &hints, &res) != 0) { 40090269Salfred rpc_createerr.cf_stat = RPC_UNKNOWNHOST; 40190269Salfred return NULL; 40290269Salfred } 40374462Salfred } 40474462Salfred 40574462Salfred for (tres = res; tres != NULL; tres = tres->ai_next) { 40674462Salfred taddr.buf = tres->ai_addr; 40774462Salfred taddr.len = taddr.maxlen = tres->ai_addrlen; 40874462Salfred 40974462Salfred#ifdef ND_DEBUG 41074462Salfred { 41174462Salfred char *ua; 41274462Salfred 41374462Salfred ua = taddr2uaddr(nconf, &taddr); 41474462Salfred fprintf(stderr, "Got it [%s]\n", ua); 41574462Salfred free(ua); 41674462Salfred } 41774462Salfred#endif 41874462Salfred 41974462Salfred#ifdef ND_DEBUG 42074462Salfred { 42174462Salfred int i; 42274462Salfred 42374462Salfred fprintf(stderr, "\tnetbuf len = %d, maxlen = %d\n", 42474462Salfred taddr.len, taddr.maxlen); 42574462Salfred fprintf(stderr, "\tAddress is "); 42674462Salfred for (i = 0; i < taddr.len; i++) 42774462Salfred fprintf(stderr, "%u.", ((char *)(taddr.buf))[i]); 42874462Salfred fprintf(stderr, "\n"); 42974462Salfred } 43074462Salfred#endif 43174462Salfred client = clnt_tli_create(RPC_ANYFD, nconf, &taddr, 43274462Salfred (rpcprog_t)RPCBPROG, (rpcvers_t)RPCBVERS4, 0, 0); 43374462Salfred#ifdef ND_DEBUG 43474462Salfred if (! client) { 43574462Salfred clnt_pcreateerror("rpcbind clnt interface"); 43674462Salfred } 43774462Salfred#endif 43874462Salfred 43974462Salfred if (client) { 44074462Salfred tmpaddr = targaddr ? taddr2uaddr(nconf, &taddr) : NULL; 44174462Salfred add_cache(host, nconf->nc_netid, &taddr, tmpaddr); 44274462Salfred if (targaddr) 44374462Salfred *targaddr = tmpaddr; 44474462Salfred break; 44574462Salfred } 44674462Salfred } 44790269Salfred if (res) 44890269Salfred freeaddrinfo(res); 44974462Salfred return (client); 45074462Salfred} 45174462Salfred 45274462Salfred/* XXX */ 45374462Salfred#define IN4_LOCALHOST_STRING "127.0.0.1" 45474462Salfred#define IN6_LOCALHOST_STRING "::1" 45574462Salfred 45674462Salfred/* 45774462Salfred * This routine will return a client handle that is connected to the local 45874462Salfred * rpcbind. Returns NULL on error and free's everything. 45974462Salfred */ 46074462Salfredstatic CLIENT * 46174462Salfredlocal_rpcb() 46274462Salfred{ 46374462Salfred CLIENT *client; 46474462Salfred static struct netconfig *loopnconf; 46574462Salfred static char *hostname; 46674462Salfred int sock; 46774462Salfred size_t tsize; 46874462Salfred struct netbuf nbuf; 46974462Salfred struct sockaddr_un sun; 47074462Salfred 47174462Salfred /* 47274462Salfred * Try connecting to the local rpcbind through a local socket 47374462Salfred * first. If this doesn't work, try all transports defined in 47474462Salfred * the netconfig file. 47574462Salfred */ 47674462Salfred memset(&sun, 0, sizeof sun); 47774462Salfred sock = _socket(AF_LOCAL, SOCK_STREAM, 0); 47874462Salfred if (sock < 0) 47974462Salfred goto try_nconf; 48074462Salfred sun.sun_family = AF_LOCAL; 48174462Salfred strcpy(sun.sun_path, _PATH_RPCBINDSOCK); 48274462Salfred nbuf.len = sun.sun_len = SUN_LEN(&sun); 48374462Salfred nbuf.maxlen = sizeof (struct sockaddr_un); 48474462Salfred nbuf.buf = &sun; 48574462Salfred 48674462Salfred tsize = __rpc_get_t_size(AF_LOCAL, 0, 0); 48774462Salfred client = clnt_vc_create(sock, &nbuf, (rpcprog_t)RPCBPROG, 48874462Salfred (rpcvers_t)RPCBVERS, tsize, tsize); 48974462Salfred 49090735Siedowse if (client != NULL) { 49190735Siedowse /* Mark the socket to be closed in destructor */ 49290735Siedowse (void) CLNT_CONTROL(client, CLSET_FD_CLOSE, NULL); 49374462Salfred return client; 49490735Siedowse } 49574462Salfred 49690735Siedowse /* Nobody needs this socket anymore; free the descriptor. */ 49790735Siedowse _close(sock); 49890735Siedowse 49974462Salfredtry_nconf: 50074462Salfred 50174462Salfred/* VARIABLES PROTECTED BY loopnconf_lock: loopnconf */ 50274462Salfred mutex_lock(&loopnconf_lock); 50374462Salfred if (loopnconf == NULL) { 50474462Salfred struct netconfig *nconf, *tmpnconf = NULL; 50574462Salfred void *nc_handle; 50674462Salfred int fd; 50774462Salfred 50874462Salfred nc_handle = setnetconfig(); 50974462Salfred if (nc_handle == NULL) { 51074462Salfred /* fails to open netconfig file */ 51174462Salfred syslog (LOG_ERR, "rpc: failed to open " NETCONFIG); 51274462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 51374462Salfred mutex_unlock(&loopnconf_lock); 51474462Salfred return (NULL); 51574462Salfred } 51674462Salfred while ((nconf = getnetconfig(nc_handle)) != NULL) { 51774462Salfred#ifdef INET6 51874462Salfred if ((strcmp(nconf->nc_protofmly, NC_INET6) == 0 || 51974462Salfred#else 52074462Salfred if (( 52174462Salfred#endif 52274462Salfred strcmp(nconf->nc_protofmly, NC_INET) == 0) && 52374462Salfred (nconf->nc_semantics == NC_TPI_COTS || 52474462Salfred nconf->nc_semantics == NC_TPI_COTS_ORD)) { 52574462Salfred fd = __rpc_nconf2fd(nconf); 52674462Salfred /* 52774462Salfred * Can't create a socket, assume that 52874462Salfred * this family isn't configured in the kernel. 52974462Salfred */ 53074462Salfred if (fd < 0) 53174462Salfred continue; 53274462Salfred _close(fd); 53374462Salfred tmpnconf = nconf; 53474462Salfred if (!strcmp(nconf->nc_protofmly, NC_INET)) 53574462Salfred hostname = IN4_LOCALHOST_STRING; 53674462Salfred else 53774462Salfred hostname = IN6_LOCALHOST_STRING; 53874462Salfred } 53974462Salfred } 54074462Salfred if (tmpnconf == NULL) { 54174462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 54274462Salfred mutex_unlock(&loopnconf_lock); 54374462Salfred return (NULL); 54474462Salfred } 54574462Salfred loopnconf = getnetconfigent(tmpnconf->nc_netid); 54674462Salfred /* loopnconf is never freed */ 54774462Salfred endnetconfig(nc_handle); 54874462Salfred } 54974462Salfred mutex_unlock(&loopnconf_lock); 55074462Salfred client = getclnthandle(hostname, loopnconf, NULL); 55174462Salfred return (client); 55274462Salfred} 55374462Salfred 55474462Salfred/* 55574462Salfred * Set a mapping between program, version and address. 55674462Salfred * Calls the rpcbind service to do the mapping. 55774462Salfred */ 55874462Salfredbool_t 55974462Salfredrpcb_set(program, version, nconf, address) 56074462Salfred rpcprog_t program; 56174462Salfred rpcvers_t version; 56274462Salfred const struct netconfig *nconf; /* Network structure of transport */ 56374462Salfred const struct netbuf *address; /* Services netconfig address */ 56474462Salfred{ 56574462Salfred CLIENT *client; 56674462Salfred bool_t rslt = FALSE; 56774462Salfred RPCB parms; 56874462Salfred char uidbuf[32]; 56974462Salfred 57074462Salfred /* parameter checking */ 57174462Salfred if (nconf == NULL) { 57274462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 57374462Salfred return (FALSE); 57474462Salfred } 57574462Salfred if (address == NULL) { 57674462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNADDR; 57774462Salfred return (FALSE); 57874462Salfred } 57974462Salfred client = local_rpcb(); 58074462Salfred if (! client) { 58174462Salfred return (FALSE); 58274462Salfred } 58374462Salfred 58474462Salfred /* convert to universal */ 58574462Salfred /*LINTED const castaway*/ 58674462Salfred parms.r_addr = taddr2uaddr((struct netconfig *) nconf, 58774462Salfred (struct netbuf *)address); 58874462Salfred if (!parms.r_addr) { 58990735Siedowse CLNT_DESTROY(client); 59074462Salfred rpc_createerr.cf_stat = RPC_N2AXLATEFAILURE; 59174462Salfred return (FALSE); /* no universal address */ 59274462Salfred } 59374462Salfred parms.r_prog = program; 59474462Salfred parms.r_vers = version; 59574462Salfred parms.r_netid = nconf->nc_netid; 59674462Salfred /* 59774462Salfred * Though uid is not being used directly, we still send it for 59874462Salfred * completeness. For non-unix platforms, perhaps some other 59974462Salfred * string or an empty string can be sent. 60074462Salfred */ 60174462Salfred (void) snprintf(uidbuf, sizeof uidbuf, "%d", geteuid()); 60274462Salfred parms.r_owner = uidbuf; 60374462Salfred 60474462Salfred CLNT_CALL(client, (rpcproc_t)RPCBPROC_SET, (xdrproc_t) xdr_rpcb, 60574462Salfred (char *)(void *)&parms, (xdrproc_t) xdr_bool, 60674462Salfred (char *)(void *)&rslt, tottimeout); 60774462Salfred 60874462Salfred CLNT_DESTROY(client); 60974462Salfred free(parms.r_addr); 61074462Salfred return (rslt); 61174462Salfred} 61274462Salfred 61374462Salfred/* 61474462Salfred * Remove the mapping between program, version and netbuf address. 61574462Salfred * Calls the rpcbind service to do the un-mapping. 61674462Salfred * If netbuf is NULL, unset for all the transports, otherwise unset 61774462Salfred * only for the given transport. 61874462Salfred */ 61974462Salfredbool_t 62074462Salfredrpcb_unset(program, version, nconf) 62174462Salfred rpcprog_t program; 62274462Salfred rpcvers_t version; 62374462Salfred const struct netconfig *nconf; 62474462Salfred{ 62574462Salfred CLIENT *client; 62674462Salfred bool_t rslt = FALSE; 62774462Salfred RPCB parms; 62874462Salfred char uidbuf[32]; 62974462Salfred 63074462Salfred client = local_rpcb(); 63174462Salfred if (! client) { 63274462Salfred return (FALSE); 63374462Salfred } 63474462Salfred 63574462Salfred parms.r_prog = program; 63674462Salfred parms.r_vers = version; 63774462Salfred if (nconf) 63874462Salfred parms.r_netid = nconf->nc_netid; 63974462Salfred else { 64074462Salfred /*LINTED const castaway*/ 64174462Salfred parms.r_netid = (char *) &nullstring[0]; /* unsets all */ 64274462Salfred } 64374462Salfred /*LINTED const castaway*/ 64474462Salfred parms.r_addr = (char *) &nullstring[0]; 64574462Salfred (void) snprintf(uidbuf, sizeof uidbuf, "%d", geteuid()); 64674462Salfred parms.r_owner = uidbuf; 64774462Salfred 64874462Salfred CLNT_CALL(client, (rpcproc_t)RPCBPROC_UNSET, (xdrproc_t) xdr_rpcb, 64974462Salfred (char *)(void *)&parms, (xdrproc_t) xdr_bool, 65074462Salfred (char *)(void *)&rslt, tottimeout); 65174462Salfred 65274462Salfred CLNT_DESTROY(client); 65374462Salfred return (rslt); 65474462Salfred} 65574462Salfred 65674462Salfred/* 65774462Salfred * From the merged list, find the appropriate entry 65874462Salfred */ 65974462Salfredstatic struct netbuf * 66074462Salfredgot_entry(relp, nconf) 66174462Salfred rpcb_entry_list_ptr relp; 66274462Salfred const struct netconfig *nconf; 66374462Salfred{ 66474462Salfred struct netbuf *na = NULL; 66574462Salfred rpcb_entry_list_ptr sp; 66674462Salfred rpcb_entry *rmap; 66774462Salfred 66874462Salfred for (sp = relp; sp != NULL; sp = sp->rpcb_entry_next) { 66974462Salfred rmap = &sp->rpcb_entry_map; 67074462Salfred if ((strcmp(nconf->nc_proto, rmap->r_nc_proto) == 0) && 67174462Salfred (strcmp(nconf->nc_protofmly, rmap->r_nc_protofmly) == 0) && 67274462Salfred (nconf->nc_semantics == rmap->r_nc_semantics) && 673121653Smbr (rmap->r_maddr != NULL) && (rmap->r_maddr[0] != 0)) { 67474462Salfred na = uaddr2taddr(nconf, rmap->r_maddr); 67574462Salfred#ifdef ND_DEBUG 67674462Salfred fprintf(stderr, "\tRemote address is [%s].\n", 67774462Salfred rmap->r_maddr); 67874462Salfred if (!na) 67974462Salfred fprintf(stderr, 68074462Salfred "\tCouldn't resolve remote address!\n"); 68174462Salfred#endif 68274462Salfred break; 68374462Salfred } 68474462Salfred } 68574462Salfred return (na); 68674462Salfred} 68774462Salfred 68874462Salfred/* 68999775Salfred * Quick check to see if rpcbind is up. Tries to connect over 69099775Salfred * local transport. 69199775Salfred */ 692156090Sdeischenstatic bool_t 69399775Salfred__rpcbind_is_up() 69499775Salfred{ 69599775Salfred struct netconfig *nconf; 69699775Salfred struct sockaddr_un sun; 69799775Salfred void *localhandle; 69899775Salfred int sock; 69999775Salfred 70099775Salfred nconf = NULL; 70199775Salfred localhandle = setnetconfig(); 702100701Siedowse while ((nconf = getnetconfig(localhandle)) != NULL) { 70399775Salfred if (nconf->nc_protofmly != NULL && 70499775Salfred strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) 70599775Salfred break; 70699775Salfred } 70799775Salfred if (nconf == NULL) 70899775Salfred return (FALSE); 70999775Salfred 71099775Salfred endnetconfig(localhandle); 71199775Salfred 71299775Salfred memset(&sun, 0, sizeof sun); 71399775Salfred sock = _socket(AF_LOCAL, SOCK_STREAM, 0); 71499775Salfred if (sock < 0) 71599775Salfred return (FALSE); 71699775Salfred sun.sun_family = AF_LOCAL; 71799775Salfred strncpy(sun.sun_path, _PATH_RPCBINDSOCK, sizeof(sun.sun_path)); 71899775Salfred sun.sun_len = SUN_LEN(&sun); 71999775Salfred 72099775Salfred if (_connect(sock, (struct sockaddr *)&sun, sun.sun_len) < 0) { 72199775Salfred _close(sock); 72299775Salfred return (FALSE); 72399775Salfred } 72499775Salfred 72599775Salfred _close(sock); 72699775Salfred return (TRUE); 72799775Salfred} 72899775Salfred 72999775Salfred/* 73074462Salfred * An internal function which optimizes rpcb_getaddr function. It also 73174462Salfred * returns the client handle that it uses to contact the remote rpcbind. 73274462Salfred * 73374462Salfred * The algorithm used: If the transports is TCP or UDP, it first tries 73474462Salfred * version 2 (portmap), 4 and then 3 (svr4). This order should be 73574462Salfred * changed in the next OS release to 4, 2 and 3. We are assuming that by 73674462Salfred * that time, version 4 would be available on many machines on the network. 73774462Salfred * With this algorithm, we get performance as well as a plan for 73874462Salfred * obsoleting version 2. 73974462Salfred * 74074462Salfred * For all other transports, the algorithm remains as 4 and then 3. 74174462Salfred * 74274462Salfred * XXX: Due to some problems with t_connect(), we do not reuse the same client 74374462Salfred * handle for COTS cases and hence in these cases we do not return the 74474462Salfred * client handle. This code will change if t_connect() ever 74574462Salfred * starts working properly. Also look under clnt_vc.c. 74674462Salfred */ 74774462Salfredstruct netbuf * 74899775Salfred__rpcb_findaddr_timed(program, version, nconf, host, clpp, tp) 74974462Salfred rpcprog_t program; 75074462Salfred rpcvers_t version; 75174462Salfred const struct netconfig *nconf; 75274462Salfred const char *host; 75374462Salfred CLIENT **clpp; 75499775Salfred struct timeval *tp; 75574462Salfred{ 75699775Salfred static bool_t check_rpcbind = TRUE; 75774462Salfred CLIENT *client = NULL; 75874462Salfred RPCB parms; 75974462Salfred enum clnt_stat clnt_st; 76074462Salfred char *ua = NULL; 76174462Salfred rpcvers_t vers; 76274462Salfred struct netbuf *address = NULL; 76374462Salfred rpcvers_t start_vers = RPCBVERS4; 76474462Salfred struct netbuf servaddr; 76574462Salfred 76674462Salfred /* parameter checking */ 76774462Salfred if (nconf == NULL) { 76874462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 76974462Salfred return (NULL); 77074462Salfred } 77174462Salfred 77274462Salfred parms.r_addr = NULL; 77374462Salfred 77499775Salfred /* 77599775Salfred * Use default total timeout if no timeout is specified. 77699775Salfred */ 77799775Salfred if (tp == NULL) 77899775Salfred tp = &tottimeout; 77999775Salfred 78074462Salfred#ifdef PORTMAP 78174462Salfred /* Try version 2 for TCP or UDP */ 78274462Salfred if (strcmp(nconf->nc_protofmly, NC_INET) == 0) { 78374462Salfred u_short port = 0; 78474462Salfred struct netbuf remote; 78574462Salfred rpcvers_t pmapvers = 2; 78674462Salfred struct pmap pmapparms; 78774462Salfred 78874462Salfred /* 78974462Salfred * Try UDP only - there are some portmappers out 79074462Salfred * there that use UDP only. 79174462Salfred */ 79274462Salfred if (strcmp(nconf->nc_proto, NC_TCP) == 0) { 79374462Salfred struct netconfig *newnconf; 79474462Salfred 795100701Siedowse if ((newnconf = getnetconfigent("udp")) == NULL) { 79674462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 79774462Salfred return (NULL); 79874462Salfred } 79974462Salfred client = getclnthandle(host, newnconf, &parms.r_addr); 800100701Siedowse freenetconfigent(newnconf); 80174462Salfred } else { 80274462Salfred client = getclnthandle(host, nconf, &parms.r_addr); 80374462Salfred } 80499775Salfred if (client == NULL) 80574462Salfred return (NULL); 80674462Salfred 80799775Salfred /* 80899775Salfred * Set version and retry timeout. 80999775Salfred */ 81099775Salfred CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)&rpcbrmttime); 81199775Salfred CLNT_CONTROL(client, CLSET_VERS, (char *)&pmapvers); 81299775Salfred 81374462Salfred pmapparms.pm_prog = program; 81474462Salfred pmapparms.pm_vers = version; 81574462Salfred pmapparms.pm_prot = strcmp(nconf->nc_proto, NC_TCP) ? 81674462Salfred IPPROTO_UDP : IPPROTO_TCP; 81774462Salfred pmapparms.pm_port = 0; /* not needed */ 81874462Salfred clnt_st = CLNT_CALL(client, (rpcproc_t)PMAPPROC_GETPORT, 81974462Salfred (xdrproc_t) xdr_pmap, (caddr_t)(void *)&pmapparms, 82074462Salfred (xdrproc_t) xdr_u_short, (caddr_t)(void *)&port, 82199775Salfred *tp); 82274462Salfred if (clnt_st != RPC_SUCCESS) { 82374462Salfred if ((clnt_st == RPC_PROGVERSMISMATCH) || 82474462Salfred (clnt_st == RPC_PROGUNAVAIL)) 82574462Salfred goto try_rpcbind; /* Try different versions */ 82674462Salfred rpc_createerr.cf_stat = RPC_PMAPFAILURE; 82774462Salfred clnt_geterr(client, &rpc_createerr.cf_error); 82874462Salfred goto error; 82974462Salfred } else if (port == 0) { 83074462Salfred address = NULL; 83174462Salfred rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED; 83274462Salfred goto error; 83374462Salfred } 83474462Salfred port = htons(port); 83599775Salfred CLNT_CONTROL(client, CLGET_SVC_ADDR, (char *)&remote); 83674462Salfred if (((address = (struct netbuf *) 83774462Salfred malloc(sizeof (struct netbuf))) == NULL) || 83874462Salfred ((address->buf = (char *) 83974462Salfred malloc(remote.len)) == NULL)) { 84074462Salfred rpc_createerr.cf_stat = RPC_SYSTEMERROR; 84174462Salfred clnt_geterr(client, &rpc_createerr.cf_error); 84274462Salfred if (address) { 84374462Salfred free(address); 84474462Salfred address = NULL; 84574462Salfred } 84674462Salfred goto error; 84774462Salfred } 84874462Salfred memcpy(address->buf, remote.buf, remote.len); 84974462Salfred memcpy(&((char *)address->buf)[sizeof (short)], 85074462Salfred (char *)(void *)&port, sizeof (short)); 85174462Salfred address->len = address->maxlen = remote.len; 85274462Salfred goto done; 85374462Salfred } 85474462Salfred#endif /* PORTMAP */ 85574462Salfred 85674462Salfredtry_rpcbind: 85774462Salfred /* 85899775Salfred * Check if rpcbind is up. This prevents needless delays when 85999775Salfred * accessing applications such as the keyserver while booting 86099775Salfred * disklessly. 86199775Salfred */ 86299775Salfred if (check_rpcbind && strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) { 86399775Salfred if (!__rpcbind_is_up()) { 86499775Salfred rpc_createerr.cf_stat = RPC_PMAPFAILURE; 86599775Salfred rpc_createerr.cf_error.re_errno = 0; 86699775Salfred goto error; 86799775Salfred } 86899775Salfred check_rpcbind = FALSE; 86999775Salfred } 87099775Salfred 87199775Salfred /* 87274462Salfred * Now we try version 4 and then 3. 87374462Salfred * We also send the remote system the address we used to 87474462Salfred * contact it in case it can help to connect back with us 87574462Salfred */ 87674462Salfred parms.r_prog = program; 87774462Salfred parms.r_vers = version; 87874462Salfred /*LINTED const castaway*/ 87974462Salfred parms.r_owner = (char *) &nullstring[0]; /* not needed; */ 88074462Salfred /* just for xdring */ 88174462Salfred parms.r_netid = nconf->nc_netid; /* not really needed */ 88274462Salfred 88374462Salfred /* 88474462Salfred * If a COTS transport is being used, try getting address via CLTS 88574462Salfred * transport. This works only with version 4. 88674462Salfred */ 88799775Salfred if (nconf->nc_semantics == NC_TPI_COTS_ORD || 88899775Salfred nconf->nc_semantics == NC_TPI_COTS) { 88999775Salfred 89074462Salfred void *handle; 89174462Salfred struct netconfig *nconf_clts; 89274462Salfred rpcb_entry_list_ptr relp = NULL; 89374462Salfred 89474462Salfred if (client == NULL) { 89574462Salfred /* This did not go through the above PORTMAP/TCP code */ 89674462Salfred if ((handle = __rpc_setconf("datagram_v")) != NULL) { 89774462Salfred while ((nconf_clts = __rpc_getconf(handle)) 89874462Salfred != NULL) { 89974462Salfred if (strcmp(nconf_clts->nc_protofmly, 90074462Salfred nconf->nc_protofmly) != 0) { 90174462Salfred continue; 90274462Salfred } 90374462Salfred client = getclnthandle(host, nconf_clts, 90474462Salfred &parms.r_addr); 90574462Salfred break; 90674462Salfred } 90774462Salfred __rpc_endconf(handle); 90874462Salfred } 90974462Salfred if (client == NULL) 91074462Salfred goto regular_rpcbind; /* Go the regular way */ 91174462Salfred } else { 91274462Salfred /* This is a UDP PORTMAP handle. Change to version 4 */ 91374462Salfred vers = RPCBVERS4; 91474462Salfred CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers); 91574462Salfred } 91674462Salfred /* 91774462Salfred * We also send the remote system the address we used to 91874462Salfred * contact it in case it can help it connect back with us 91974462Salfred */ 92074462Salfred if (parms.r_addr == NULL) { 92174462Salfred /*LINTED const castaway*/ 92274462Salfred parms.r_addr = (char *) &nullstring[0]; /* for XDRing */ 92374462Salfred } 92499775Salfred 92599775Salfred CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)&rpcbrmttime); 92699775Salfred 92774462Salfred clnt_st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETADDRLIST, 92874462Salfred (xdrproc_t) xdr_rpcb, (char *)(void *)&parms, 92974462Salfred (xdrproc_t) xdr_rpcb_entry_list_ptr, 93099775Salfred (char *)(void *)&relp, *tp); 93174462Salfred if (clnt_st == RPC_SUCCESS) { 93274462Salfred if ((address = got_entry(relp, nconf)) != NULL) { 93374462Salfred xdr_free((xdrproc_t) xdr_rpcb_entry_list_ptr, 93474462Salfred (char *)(void *)&relp); 935109952Smbr CLNT_CONTROL(client, CLGET_SVC_ADDR, 936109952Smbr (char *)(void *)&servaddr); 937109952Smbr __rpc_fixup_addr(address, &servaddr); 93874462Salfred goto done; 93974462Salfred } 94074462Salfred /* Entry not found for this transport */ 94174462Salfred xdr_free((xdrproc_t) xdr_rpcb_entry_list_ptr, 94274462Salfred (char *)(void *)&relp); 94374462Salfred /* 94474462Salfred * XXX: should have perhaps returned with error but 94574462Salfred * since the remote machine might not always be able 94674462Salfred * to send the address on all transports, we try the 94774462Salfred * regular way with regular_rpcbind 94874462Salfred */ 94974462Salfred goto regular_rpcbind; 95074462Salfred } else if ((clnt_st == RPC_PROGVERSMISMATCH) || 95174462Salfred (clnt_st == RPC_PROGUNAVAIL)) { 95274462Salfred start_vers = RPCBVERS; /* Try version 3 now */ 95374462Salfred goto regular_rpcbind; /* Try different versions */ 95474462Salfred } else { 95574462Salfred rpc_createerr.cf_stat = RPC_PMAPFAILURE; 95674462Salfred clnt_geterr(client, &rpc_createerr.cf_error); 95774462Salfred goto error; 95874462Salfred } 95974462Salfred } 96074462Salfred 96174462Salfredregular_rpcbind: 96274462Salfred 96374462Salfred /* Now the same transport is to be used to get the address */ 96474462Salfred if (client && ((nconf->nc_semantics == NC_TPI_COTS_ORD) || 96574462Salfred (nconf->nc_semantics == NC_TPI_COTS))) { 96674462Salfred /* A CLTS type of client - destroy it */ 96774462Salfred CLNT_DESTROY(client); 96874462Salfred client = NULL; 96974462Salfred } 97074462Salfred 97174462Salfred if (client == NULL) { 97274462Salfred client = getclnthandle(host, nconf, &parms.r_addr); 97374462Salfred if (client == NULL) { 97474462Salfred goto error; 97574462Salfred } 97674462Salfred } 97774462Salfred if (parms.r_addr == NULL) { 97874462Salfred /*LINTED const castaway*/ 97974462Salfred parms.r_addr = (char *) &nullstring[0]; 98074462Salfred } 98174462Salfred 98274462Salfred /* First try from start_vers and then version 3 (RPCBVERS) */ 98399775Salfred 98499775Salfred CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *) &rpcbrmttime); 98574462Salfred for (vers = start_vers; vers >= RPCBVERS; vers--) { 98674462Salfred /* Set the version */ 98774462Salfred CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers); 98874462Salfred clnt_st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETADDR, 98974462Salfred (xdrproc_t) xdr_rpcb, (char *)(void *)&parms, 99099775Salfred (xdrproc_t) xdr_wrapstring, (char *)(void *) &ua, *tp); 99174462Salfred if (clnt_st == RPC_SUCCESS) { 992121653Smbr if ((ua == NULL) || (ua[0] == 0)) { 99374462Salfred /* address unknown */ 99474462Salfred rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED; 99574462Salfred goto error; 99674462Salfred } 99774462Salfred address = uaddr2taddr(nconf, ua); 99874462Salfred#ifdef ND_DEBUG 99974462Salfred fprintf(stderr, "\tRemote address is [%s]\n", ua); 100074462Salfred if (!address) 100174462Salfred fprintf(stderr, 100274462Salfred "\tCouldn't resolve remote address!\n"); 100374462Salfred#endif 100474462Salfred xdr_free((xdrproc_t)xdr_wrapstring, 100574462Salfred (char *)(void *)&ua); 100674462Salfred 100774462Salfred if (! address) { 100874462Salfred /* We don't know about your universal address */ 100974462Salfred rpc_createerr.cf_stat = RPC_N2AXLATEFAILURE; 101074462Salfred goto error; 101174462Salfred } 101274462Salfred CLNT_CONTROL(client, CLGET_SVC_ADDR, 101374462Salfred (char *)(void *)&servaddr); 101474462Salfred __rpc_fixup_addr(address, &servaddr); 101574462Salfred goto done; 101674462Salfred } else if (clnt_st == RPC_PROGVERSMISMATCH) { 101774462Salfred struct rpc_err rpcerr; 101874462Salfred 101974462Salfred clnt_geterr(client, &rpcerr); 102074462Salfred if (rpcerr.re_vers.low > RPCBVERS4) 102174462Salfred goto error; /* a new version, can't handle */ 102274462Salfred } else if (clnt_st != RPC_PROGUNAVAIL) { 102374462Salfred /* Cant handle this error */ 102474462Salfred rpc_createerr.cf_stat = clnt_st; 102574462Salfred clnt_geterr(client, &rpc_createerr.cf_error); 102674462Salfred goto error; 102774462Salfred } 102874462Salfred } 102974462Salfred 103074462Salfrederror: 103174462Salfred if (client) { 103274462Salfred CLNT_DESTROY(client); 103374462Salfred client = NULL; 103474462Salfred } 103574462Salfreddone: 103674462Salfred if (nconf->nc_semantics != NC_TPI_CLTS) { 103774462Salfred /* This client is the connectionless one */ 103874462Salfred if (client) { 103974462Salfred CLNT_DESTROY(client); 104074462Salfred client = NULL; 104174462Salfred } 104274462Salfred } 104374462Salfred if (clpp) { 104474462Salfred *clpp = client; 104574462Salfred } else if (client) { 104674462Salfred CLNT_DESTROY(client); 104774462Salfred } 104879726Siedowse if (parms.r_addr != NULL && parms.r_addr != nullstring) 104979726Siedowse free(parms.r_addr); 105074462Salfred return (address); 105174462Salfred} 105274462Salfred 105374462Salfred 105474462Salfred/* 105574462Salfred * Find the mapped address for program, version. 105674462Salfred * Calls the rpcbind service remotely to do the lookup. 105774462Salfred * Uses the transport specified in nconf. 105874462Salfred * Returns FALSE (0) if no map exists, else returns 1. 105974462Salfred * 106074462Salfred * Assuming that the address is all properly allocated 106174462Salfred */ 106274462Salfredint 106374462Salfredrpcb_getaddr(program, version, nconf, address, host) 106474462Salfred rpcprog_t program; 106574462Salfred rpcvers_t version; 106674462Salfred const struct netconfig *nconf; 106774462Salfred struct netbuf *address; 106874462Salfred const char *host; 106974462Salfred{ 107074462Salfred struct netbuf *na; 107174462Salfred 107299775Salfred if ((na = __rpcb_findaddr_timed(program, version, 107399775Salfred (struct netconfig *) nconf, (char *) host, 107499775Salfred (CLIENT **) NULL, (struct timeval *) NULL)) == NULL) 107574462Salfred return (FALSE); 107674462Salfred 107774462Salfred if (na->len > address->maxlen) { 107874462Salfred /* Too long address */ 107974462Salfred free(na->buf); 108074462Salfred free(na); 108174462Salfred rpc_createerr.cf_stat = RPC_FAILED; 108274462Salfred return (FALSE); 108374462Salfred } 108474462Salfred memcpy(address->buf, na->buf, (size_t)na->len); 108574462Salfred address->len = na->len; 108674462Salfred free(na->buf); 108774462Salfred free(na); 108874462Salfred return (TRUE); 108974462Salfred} 109074462Salfred 109174462Salfred/* 109274462Salfred * Get a copy of the current maps. 109374462Salfred * Calls the rpcbind service remotely to get the maps. 109474462Salfred * 109574462Salfred * It returns only a list of the services 109674462Salfred * It returns NULL on failure. 109774462Salfred */ 109874462Salfredrpcblist * 109974462Salfredrpcb_getmaps(nconf, host) 110074462Salfred const struct netconfig *nconf; 110174462Salfred const char *host; 110274462Salfred{ 110374462Salfred rpcblist_ptr head = NULL; 110474462Salfred CLIENT *client; 110574462Salfred enum clnt_stat clnt_st; 110674462Salfred rpcvers_t vers = 0; 110774462Salfred 110874462Salfred client = getclnthandle(host, nconf, NULL); 110974462Salfred if (client == NULL) { 111074462Salfred return (head); 111174462Salfred } 111274462Salfred clnt_st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_DUMP, 111374462Salfred (xdrproc_t) xdr_void, NULL, (xdrproc_t) xdr_rpcblist_ptr, 111474462Salfred (char *)(void *)&head, tottimeout); 111574462Salfred if (clnt_st == RPC_SUCCESS) 111674462Salfred goto done; 111774462Salfred 111874462Salfred if ((clnt_st != RPC_PROGVERSMISMATCH) && 111974462Salfred (clnt_st != RPC_PROGUNAVAIL)) { 112074462Salfred rpc_createerr.cf_stat = RPC_RPCBFAILURE; 112174462Salfred clnt_geterr(client, &rpc_createerr.cf_error); 112274462Salfred goto done; 112374462Salfred } 112474462Salfred 112574462Salfred /* fall back to earlier version */ 112674462Salfred CLNT_CONTROL(client, CLGET_VERS, (char *)(void *)&vers); 112774462Salfred if (vers == RPCBVERS4) { 112874462Salfred vers = RPCBVERS; 112974462Salfred CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers); 113074462Salfred if (CLNT_CALL(client, (rpcproc_t)RPCBPROC_DUMP, 113174462Salfred (xdrproc_t) xdr_void, NULL, (xdrproc_t) xdr_rpcblist_ptr, 113274462Salfred (char *)(void *)&head, tottimeout) == RPC_SUCCESS) 113374462Salfred goto done; 113474462Salfred } 113574462Salfred rpc_createerr.cf_stat = RPC_RPCBFAILURE; 113674462Salfred clnt_geterr(client, &rpc_createerr.cf_error); 113774462Salfred 113874462Salfreddone: 113974462Salfred CLNT_DESTROY(client); 114074462Salfred return (head); 114174462Salfred} 114274462Salfred 114374462Salfred/* 114474462Salfred * rpcbinder remote-call-service interface. 114574462Salfred * This routine is used to call the rpcbind remote call service 114674462Salfred * which will look up a service program in the address maps, and then 114774462Salfred * remotely call that routine with the given parameters. This allows 114874462Salfred * programs to do a lookup and call in one step. 114974462Salfred*/ 115074462Salfredenum clnt_stat 115174462Salfredrpcb_rmtcall(nconf, host, prog, vers, proc, xdrargs, argsp, 115274462Salfred xdrres, resp, tout, addr_ptr) 115374462Salfred const struct netconfig *nconf; /* Netconfig structure */ 115474462Salfred const char *host; /* Remote host name */ 115574462Salfred rpcprog_t prog; 115674462Salfred rpcvers_t vers; 115774462Salfred rpcproc_t proc; /* Remote proc identifiers */ 115874462Salfred xdrproc_t xdrargs, xdrres; /* XDR routines */ 115974462Salfred caddr_t argsp, resp; /* Argument and Result */ 116074462Salfred struct timeval tout; /* Timeout value for this call */ 116174462Salfred const struct netbuf *addr_ptr; /* Preallocated netbuf address */ 116274462Salfred{ 116374462Salfred CLIENT *client; 116474462Salfred enum clnt_stat stat; 116574462Salfred struct r_rpcb_rmtcallargs a; 116674462Salfred struct r_rpcb_rmtcallres r; 116774462Salfred rpcvers_t rpcb_vers; 116874462Salfred 116979726Siedowse stat = 0; 117074462Salfred client = getclnthandle(host, nconf, NULL); 117174462Salfred if (client == NULL) { 117274462Salfred return (RPC_FAILED); 117374462Salfred } 117474462Salfred /*LINTED const castaway*/ 117574462Salfred CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)(void *)&rmttimeout); 117674462Salfred a.prog = prog; 117774462Salfred a.vers = vers; 117874462Salfred a.proc = proc; 117974462Salfred a.args.args_val = argsp; 118074462Salfred a.xdr_args = xdrargs; 118174462Salfred r.addr = NULL; 118274462Salfred r.results.results_val = resp; 118374462Salfred r.xdr_res = xdrres; 118474462Salfred 118574462Salfred for (rpcb_vers = RPCBVERS4; rpcb_vers >= RPCBVERS; rpcb_vers--) { 118674462Salfred CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&rpcb_vers); 118774462Salfred stat = CLNT_CALL(client, (rpcproc_t)RPCBPROC_CALLIT, 118874462Salfred (xdrproc_t) xdr_rpcb_rmtcallargs, (char *)(void *)&a, 118974462Salfred (xdrproc_t) xdr_rpcb_rmtcallres, (char *)(void *)&r, tout); 119074462Salfred if ((stat == RPC_SUCCESS) && (addr_ptr != NULL)) { 119174462Salfred struct netbuf *na; 119274462Salfred /*LINTED const castaway*/ 119374462Salfred na = uaddr2taddr((struct netconfig *) nconf, r.addr); 119474462Salfred if (!na) { 119574462Salfred stat = RPC_N2AXLATEFAILURE; 119674462Salfred /*LINTED const castaway*/ 119774462Salfred ((struct netbuf *) addr_ptr)->len = 0; 119874462Salfred goto error; 119974462Salfred } 120074462Salfred if (na->len > addr_ptr->maxlen) { 120174462Salfred /* Too long address */ 120274462Salfred stat = RPC_FAILED; /* XXX A better error no */ 120374462Salfred free(na->buf); 120474462Salfred free(na); 120574462Salfred /*LINTED const castaway*/ 120674462Salfred ((struct netbuf *) addr_ptr)->len = 0; 120774462Salfred goto error; 120874462Salfred } 120974462Salfred memcpy(addr_ptr->buf, na->buf, (size_t)na->len); 121074462Salfred /*LINTED const castaway*/ 121174462Salfred ((struct netbuf *)addr_ptr)->len = na->len; 121274462Salfred free(na->buf); 121374462Salfred free(na); 121474462Salfred break; 121574462Salfred } else if ((stat != RPC_PROGVERSMISMATCH) && 121674462Salfred (stat != RPC_PROGUNAVAIL)) { 121774462Salfred goto error; 121874462Salfred } 121974462Salfred } 122074462Salfrederror: 122174462Salfred CLNT_DESTROY(client); 122274462Salfred if (r.addr) 122374462Salfred xdr_free((xdrproc_t) xdr_wrapstring, (char *)(void *)&r.addr); 122474462Salfred return (stat); 122574462Salfred} 122674462Salfred 122774462Salfred/* 122874462Salfred * Gets the time on the remote host. 122974462Salfred * Returns 1 if succeeds else 0. 123074462Salfred */ 123174462Salfredbool_t 123274462Salfredrpcb_gettime(host, timep) 123374462Salfred const char *host; 123474462Salfred time_t *timep; 123574462Salfred{ 123674462Salfred CLIENT *client = NULL; 123774462Salfred void *handle; 123874462Salfred struct netconfig *nconf; 123974462Salfred rpcvers_t vers; 124074462Salfred enum clnt_stat st; 124174462Salfred 124274462Salfred 1243121653Smbr if ((host == NULL) || (host[0] == 0)) { 124474462Salfred time(timep); 124574462Salfred return (TRUE); 124674462Salfred } 124774462Salfred 124874462Salfred if ((handle = __rpc_setconf("netpath")) == NULL) { 124974462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 125074462Salfred return (FALSE); 125174462Salfred } 125274462Salfred rpc_createerr.cf_stat = RPC_SUCCESS; 125374462Salfred while (client == NULL) { 125474462Salfred if ((nconf = __rpc_getconf(handle)) == NULL) { 125574462Salfred if (rpc_createerr.cf_stat == RPC_SUCCESS) 125674462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 125774462Salfred break; 125874462Salfred } 125974462Salfred client = getclnthandle(host, nconf, NULL); 126074462Salfred if (client) 126174462Salfred break; 126274462Salfred } 126374462Salfred __rpc_endconf(handle); 126474462Salfred if (client == (CLIENT *) NULL) { 126574462Salfred return (FALSE); 126674462Salfred } 126774462Salfred 126874462Salfred st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETTIME, 126974462Salfred (xdrproc_t) xdr_void, NULL, 127074462Salfred (xdrproc_t) xdr_int, (char *)(void *)timep, tottimeout); 127174462Salfred 127274462Salfred if ((st == RPC_PROGVERSMISMATCH) || (st == RPC_PROGUNAVAIL)) { 127374462Salfred CLNT_CONTROL(client, CLGET_VERS, (char *)(void *)&vers); 127474462Salfred if (vers == RPCBVERS4) { 127574462Salfred /* fall back to earlier version */ 127674462Salfred vers = RPCBVERS; 127774462Salfred CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers); 127874462Salfred st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETTIME, 127974462Salfred (xdrproc_t) xdr_void, NULL, 128074462Salfred (xdrproc_t) xdr_int, (char *)(void *)timep, 128174462Salfred tottimeout); 128274462Salfred } 128374462Salfred } 128474462Salfred CLNT_DESTROY(client); 128574462Salfred return (st == RPC_SUCCESS? TRUE: FALSE); 128674462Salfred} 128774462Salfred 128874462Salfred/* 128974462Salfred * Converts taddr to universal address. This routine should never 129074462Salfred * really be called because local n2a libraries are always provided. 129174462Salfred */ 129274462Salfredchar * 129374462Salfredrpcb_taddr2uaddr(nconf, taddr) 129474462Salfred struct netconfig *nconf; 129574462Salfred struct netbuf *taddr; 129674462Salfred{ 129774462Salfred CLIENT *client; 129874462Salfred char *uaddr = NULL; 129974462Salfred 130074462Salfred 130174462Salfred /* parameter checking */ 130274462Salfred if (nconf == NULL) { 130374462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 130474462Salfred return (NULL); 130574462Salfred } 130674462Salfred if (taddr == NULL) { 130774462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNADDR; 130874462Salfred return (NULL); 130974462Salfred } 131074462Salfred client = local_rpcb(); 131174462Salfred if (! client) { 131274462Salfred return (NULL); 131374462Salfred } 131474462Salfred 131574462Salfred CLNT_CALL(client, (rpcproc_t)RPCBPROC_TADDR2UADDR, 131674462Salfred (xdrproc_t) xdr_netbuf, (char *)(void *)taddr, 131774462Salfred (xdrproc_t) xdr_wrapstring, (char *)(void *)&uaddr, tottimeout); 131874462Salfred CLNT_DESTROY(client); 131974462Salfred return (uaddr); 132074462Salfred} 132174462Salfred 132274462Salfred/* 132374462Salfred * Converts universal address to netbuf. This routine should never 132474462Salfred * really be called because local n2a libraries are always provided. 132574462Salfred */ 132674462Salfredstruct netbuf * 132774462Salfredrpcb_uaddr2taddr(nconf, uaddr) 132874462Salfred struct netconfig *nconf; 132974462Salfred char *uaddr; 133074462Salfred{ 133174462Salfred CLIENT *client; 133274462Salfred struct netbuf *taddr; 133374462Salfred 133474462Salfred 133574462Salfred /* parameter checking */ 133674462Salfred if (nconf == NULL) { 133774462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 133874462Salfred return (NULL); 133974462Salfred } 134074462Salfred if (uaddr == NULL) { 134174462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNADDR; 134274462Salfred return (NULL); 134374462Salfred } 134474462Salfred client = local_rpcb(); 134574462Salfred if (! client) { 134674462Salfred return (NULL); 134774462Salfred } 134874462Salfred 134974462Salfred taddr = (struct netbuf *)calloc(1, sizeof (struct netbuf)); 135074462Salfred if (taddr == NULL) { 135174462Salfred CLNT_DESTROY(client); 135274462Salfred return (NULL); 135374462Salfred } 135474462Salfred if (CLNT_CALL(client, (rpcproc_t)RPCBPROC_UADDR2TADDR, 135574462Salfred (xdrproc_t) xdr_wrapstring, (char *)(void *)&uaddr, 135674462Salfred (xdrproc_t) xdr_netbuf, (char *)(void *)taddr, 135774462Salfred tottimeout) != RPC_SUCCESS) { 135874462Salfred free(taddr); 135974462Salfred taddr = NULL; 136074462Salfred } 136174462Salfred CLNT_DESTROY(client); 136274462Salfred return (taddr); 136374462Salfred} 1364