174462Salfred/* $NetBSD: rpcb_clnt.c,v 1.6 2000/07/16 06:41:43 itojun Exp $ */ 274462Salfred 3261046Smav/*- 4261046Smav * Copyright (c) 2010, Oracle America, Inc. 5261046Smav * All rights reserved. 699775Salfred * 7261046Smav * Redistribution and use in source and binary forms, with or without 8261046Smav * modification, are permitted provided that the following conditions are met: 9261046Smav * - Redistributions of source code must retain the above copyright notice, 10261046Smav * this list of conditions and the following disclaimer. 11261046Smav * - Redistributions in binary form must reproduce the above copyright notice, 12261046Smav * this list of conditions and the following disclaimer in the documentation 13261046Smav * and/or other materials provided with the distribution. 14261046Smav * - Neither the name of the "Oracle America, Inc." nor the names of its 15261046Smav * contributors may be used to endorse or promote products derived 16261046Smav * from this software without specific prior written permission. 1799775Salfred * 18261046Smav * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19261046Smav * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20261046Smav * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21261046Smav * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22261046Smav * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23261046Smav * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24261046Smav * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25261046Smav * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26261046Smav * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27261046Smav * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28261046Smav * POSSIBILITY OF SUCH DAMAGE. 2974462Salfred */ 3074462Salfred 3174462Salfred/* #ident "@(#)rpcb_clnt.c 1.27 94/04/24 SMI" */ 3274462Salfred 3374462Salfred 34136581Sobrien#if defined(LIBC_SCCS) && !defined(lint) 3574462Salfredstatic char sccsid[] = "@(#)rpcb_clnt.c 1.30 89/06/21 Copyr 1988 Sun Micro"; 3674462Salfred#endif 3792990Sobrien#include <sys/cdefs.h> 3892990Sobrien__FBSDID("$FreeBSD: stable/10/lib/libc/rpc/rpcb_clnt.c 320325 2017-06-25 05:46:03Z delphij $"); 3974462Salfred 4074462Salfred/* 4174462Salfred * rpcb_clnt.c 4274462Salfred * interface to rpcbind rpc service. 4374462Salfred */ 4474462Salfred 4575094Siedowse#include "namespace.h" 4674462Salfred#include "reentrant.h" 4774462Salfred#include <sys/types.h> 4874462Salfred#include <sys/socket.h> 4974462Salfred#include <sys/un.h> 5074462Salfred#include <sys/utsname.h> 5174462Salfred#include <rpc/rpc.h> 5274462Salfred#include <rpc/rpcb_prot.h> 5374462Salfred#include <rpc/nettype.h> 5474462Salfred#include <netconfig.h> 5574462Salfred#ifdef PORTMAP 5674462Salfred#include <netinet/in.h> /* FOR IPPROTO_TCP/UDP definitions */ 5774462Salfred#include <rpc/pmap_prot.h> 5874462Salfred#endif /* PORTMAP */ 5974462Salfred#include <stdio.h> 6074462Salfred#include <errno.h> 6174462Salfred#include <stdlib.h> 6274462Salfred#include <string.h> 6374462Salfred#include <unistd.h> 6474462Salfred#include <netdb.h> 6574462Salfred#include <syslog.h> 6674462Salfred#include "un-namespace.h" 6774462Salfred 6874462Salfred#include "rpc_com.h" 69156090Sdeischen#include "mt_misc.h" 7074462Salfred 7174462Salfredstatic struct timeval tottimeout = { 60, 0 }; 7274462Salfredstatic const struct timeval rmttimeout = { 3, 0 }; 7399775Salfredstatic struct timeval rpcbrmttime = { 15, 0 }; 7474462Salfred 7592905Sobrienextern bool_t xdr_wrapstring(XDR *, char **); 7674462Salfred 7774462Salfredstatic const char nullstring[] = "\000"; 7874462Salfred 7974462Salfred#define CACHESIZE 6 8074462Salfred 8174462Salfredstruct address_cache { 8274462Salfred char *ac_host; 8374462Salfred char *ac_netid; 8474462Salfred char *ac_uaddr; 8574462Salfred struct netbuf *ac_taddr; 8674462Salfred struct address_cache *ac_next; 8774462Salfred}; 8874462Salfred 8974462Salfredstatic struct address_cache *front; 9074462Salfredstatic int cachesize; 9174462Salfred 9274462Salfred#define CLCR_GET_RPCB_TIMEOUT 1 9374462Salfred#define CLCR_SET_RPCB_TIMEOUT 2 9474462Salfred 9574462Salfred 9674462Salfredextern int __rpc_lowvers; 9774462Salfred 9892905Sobrienstatic struct address_cache *check_cache(const char *, const char *); 9992905Sobrienstatic void delete_cache(struct netbuf *); 10092941Sobrienstatic void add_cache(const char *, const char *, struct netbuf *, char *); 10192941Sobrienstatic CLIENT *getclnthandle(const char *, const struct netconfig *, char **); 10292905Sobrienstatic CLIENT *local_rpcb(void); 10392941Sobrienstatic struct netbuf *got_entry(rpcb_entry_list_ptr, const struct netconfig *); 10474462Salfred 10574462Salfred/* 10674462Salfred * This routine adjusts the timeout used for calls to the remote rpcbind. 10774462Salfred * Also, this routine can be used to set the use of portmapper version 2 10874462Salfred * only when doing rpc_broadcasts 10974462Salfred * These are private routines that may not be provided in future releases. 11074462Salfred */ 11174462Salfredbool_t 112309489Sngie__rpc_control(int request, void *info) 11374462Salfred{ 11474462Salfred switch (request) { 11574462Salfred case CLCR_GET_RPCB_TIMEOUT: 11674462Salfred *(struct timeval *)info = tottimeout; 11774462Salfred break; 11874462Salfred case CLCR_SET_RPCB_TIMEOUT: 11974462Salfred tottimeout = *(struct timeval *)info; 12074462Salfred break; 12174462Salfred case CLCR_SET_LOWVERS: 12274462Salfred __rpc_lowvers = *(int *)info; 12374462Salfred break; 12474462Salfred case CLCR_GET_LOWVERS: 12574462Salfred *(int *)info = __rpc_lowvers; 12674462Salfred break; 12774462Salfred default: 12874462Salfred return (FALSE); 12974462Salfred } 13074462Salfred return (TRUE); 13174462Salfred} 13274462Salfred 13374462Salfred/* 13474462Salfred * It might seem that a reader/writer lock would be more reasonable here. 13574462Salfred * However because getclnthandle(), the only user of the cache functions, 13674462Salfred * may do a delete_cache() operation if a check_cache() fails to return an 13774462Salfred * address useful to clnt_tli_create(), we may as well use a mutex. 13874462Salfred */ 13974462Salfred/* 14074462Salfred * As it turns out, if the cache lock is *not* a reader/writer lock, we will 14174462Salfred * block all clnt_create's if we are trying to connect to a host that's down, 14274462Salfred * since the lock will be held all during that time. 14374462Salfred */ 14474462Salfred 14574462Salfred/* 14674462Salfred * The routines check_cache(), add_cache(), delete_cache() manage the 14774462Salfred * cache of rpcbind addresses for (host, netid). 14874462Salfred */ 14974462Salfred 15074462Salfredstatic struct address_cache * 151309489Sngiecheck_cache(const char *host, const char *netid) 15274462Salfred{ 15374462Salfred struct address_cache *cptr; 15474462Salfred 15574462Salfred /* READ LOCK HELD ON ENTRY: rpcbaddr_cache_lock */ 15674462Salfred 15774462Salfred for (cptr = front; cptr != NULL; cptr = cptr->ac_next) { 15874462Salfred if (!strcmp(cptr->ac_host, host) && 15974462Salfred !strcmp(cptr->ac_netid, netid)) { 16074462Salfred#ifdef ND_DEBUG 16174462Salfred fprintf(stderr, "Found cache entry for %s: %s\n", 16274462Salfred host, netid); 16374462Salfred#endif 16474462Salfred return (cptr); 16574462Salfred } 16674462Salfred } 16774462Salfred return ((struct address_cache *) NULL); 16874462Salfred} 16974462Salfred 17074462Salfredstatic void 171309489Sngiedelete_cache(struct netbuf *addr) 17274462Salfred{ 17374462Salfred struct address_cache *cptr, *prevptr = NULL; 17474462Salfred 17574462Salfred /* WRITE LOCK HELD ON ENTRY: rpcbaddr_cache_lock */ 17674462Salfred for (cptr = front; cptr != NULL; cptr = cptr->ac_next) { 17774462Salfred if (!memcmp(cptr->ac_taddr->buf, addr->buf, addr->len)) { 17874462Salfred free(cptr->ac_host); 17974462Salfred free(cptr->ac_netid); 18074462Salfred free(cptr->ac_taddr->buf); 18174462Salfred free(cptr->ac_taddr); 182290899Sngie free(cptr->ac_uaddr); 18374462Salfred if (prevptr) 18474462Salfred prevptr->ac_next = cptr->ac_next; 18574462Salfred else 18674462Salfred front = cptr->ac_next; 18774462Salfred free(cptr); 18874462Salfred cachesize--; 18974462Salfred break; 19074462Salfred } 19174462Salfred prevptr = cptr; 19274462Salfred } 19374462Salfred} 19474462Salfred 19574462Salfredstatic void 196309487Sngieadd_cache(const char *host, const char *netid, struct netbuf *taddr, 197309487Sngie char *uaddr) 19874462Salfred{ 19974462Salfred struct address_cache *ad_cache, *cptr, *prevptr; 20074462Salfred 20174462Salfred ad_cache = (struct address_cache *) 20274462Salfred malloc(sizeof (struct address_cache)); 20374462Salfred if (!ad_cache) { 20474462Salfred return; 20574462Salfred } 20674462Salfred ad_cache->ac_host = strdup(host); 20774462Salfred ad_cache->ac_netid = strdup(netid); 20874462Salfred ad_cache->ac_uaddr = uaddr ? strdup(uaddr) : NULL; 20974462Salfred ad_cache->ac_taddr = (struct netbuf *)malloc(sizeof (struct netbuf)); 21074462Salfred if (!ad_cache->ac_host || !ad_cache->ac_netid || !ad_cache->ac_taddr || 21174462Salfred (uaddr && !ad_cache->ac_uaddr)) { 212162193Smbr goto out; 21374462Salfred } 21474462Salfred ad_cache->ac_taddr->len = ad_cache->ac_taddr->maxlen = taddr->len; 21574462Salfred ad_cache->ac_taddr->buf = (char *) malloc(taddr->len); 21674462Salfred if (ad_cache->ac_taddr->buf == NULL) { 217162193Smbrout: 218290899Sngie free(ad_cache->ac_host); 219290899Sngie free(ad_cache->ac_netid); 220290899Sngie free(ad_cache->ac_uaddr); 221290899Sngie free(ad_cache->ac_taddr); 222162193Smbr free(ad_cache); 22374462Salfred return; 22474462Salfred } 22574462Salfred memcpy(ad_cache->ac_taddr->buf, taddr->buf, taddr->len); 22674462Salfred#ifdef ND_DEBUG 22774462Salfred fprintf(stderr, "Added to cache: %s : %s\n", host, netid); 22874462Salfred#endif 22974462Salfred 23074462Salfred/* VARIABLES PROTECTED BY rpcbaddr_cache_lock: cptr */ 23174462Salfred 23274462Salfred rwlock_wrlock(&rpcbaddr_cache_lock); 23374462Salfred if (cachesize < CACHESIZE) { 23474462Salfred ad_cache->ac_next = front; 23574462Salfred front = ad_cache; 23674462Salfred cachesize++; 23774462Salfred } else { 23874462Salfred /* Free the last entry */ 23974462Salfred cptr = front; 24074462Salfred prevptr = NULL; 24174462Salfred while (cptr->ac_next) { 24274462Salfred prevptr = cptr; 24374462Salfred cptr = cptr->ac_next; 24474462Salfred } 24574462Salfred 24674462Salfred#ifdef ND_DEBUG 24774462Salfred fprintf(stderr, "Deleted from cache: %s : %s\n", 24874462Salfred cptr->ac_host, cptr->ac_netid); 24974462Salfred#endif 25074462Salfred free(cptr->ac_host); 25174462Salfred free(cptr->ac_netid); 25274462Salfred free(cptr->ac_taddr->buf); 25374462Salfred free(cptr->ac_taddr); 254290899Sngie free(cptr->ac_uaddr); 25574462Salfred 25674462Salfred if (prevptr) { 25774462Salfred prevptr->ac_next = NULL; 25874462Salfred ad_cache->ac_next = front; 25974462Salfred front = ad_cache; 26074462Salfred } else { 26174462Salfred front = ad_cache; 26274462Salfred ad_cache->ac_next = NULL; 26374462Salfred } 26474462Salfred free(cptr); 26574462Salfred } 26674462Salfred rwlock_unlock(&rpcbaddr_cache_lock); 26774462Salfred} 26874462Salfred 26974462Salfred/* 27074462Salfred * This routine will return a client handle that is connected to the 27181069Siedowse * rpcbind. If targaddr is non-NULL, the "universal address" of the 27281069Siedowse * host will be stored in *targaddr; the caller is responsible for 27381069Siedowse * freeing this string. 27481069Siedowse * On error, returns NULL and free's everything. 27574462Salfred */ 27674462Salfredstatic CLIENT * 277309489Sngiegetclnthandle(const char *host, const struct netconfig *nconf, char **targaddr) 27874462Salfred{ 27974462Salfred CLIENT *client; 28074462Salfred struct netbuf *addr, taddr; 28174462Salfred struct netbuf addr_to_delete; 28274462Salfred struct __rpc_sockinfo si; 28374462Salfred struct addrinfo hints, *res, *tres; 28474462Salfred struct address_cache *ad_cache; 28574462Salfred char *tmpaddr; 28674462Salfred 28774462Salfred/* VARIABLES PROTECTED BY rpcbaddr_cache_lock: ad_cache */ 28874462Salfred 28974462Salfred /* Get the address of the rpcbind. Check cache first */ 29079726Siedowse client = NULL; 29174462Salfred addr_to_delete.len = 0; 29274462Salfred rwlock_rdlock(&rpcbaddr_cache_lock); 29390269Salfred ad_cache = NULL; 29490269Salfred if (host != NULL) 29590269Salfred ad_cache = check_cache(host, nconf->nc_netid); 29674462Salfred if (ad_cache != NULL) { 29774462Salfred addr = ad_cache->ac_taddr; 29874462Salfred client = clnt_tli_create(RPC_ANYFD, nconf, addr, 29974462Salfred (rpcprog_t)RPCBPROG, (rpcvers_t)RPCBVERS4, 0, 0); 30074462Salfred if (client != NULL) { 30174462Salfred if (targaddr) 30281069Siedowse *targaddr = strdup(ad_cache->ac_uaddr); 30374462Salfred rwlock_unlock(&rpcbaddr_cache_lock); 30474462Salfred return (client); 30574462Salfred } 30674462Salfred addr_to_delete.len = addr->len; 30774462Salfred addr_to_delete.buf = (char *)malloc(addr->len); 30874462Salfred if (addr_to_delete.buf == NULL) { 30974462Salfred addr_to_delete.len = 0; 31074462Salfred } else { 31174462Salfred memcpy(addr_to_delete.buf, addr->buf, addr->len); 31274462Salfred } 31374462Salfred } 31474462Salfred rwlock_unlock(&rpcbaddr_cache_lock); 31574462Salfred if (addr_to_delete.len != 0) { 31674462Salfred /* 31774462Salfred * Assume this may be due to cache data being 31874462Salfred * outdated 31974462Salfred */ 32074462Salfred rwlock_wrlock(&rpcbaddr_cache_lock); 32174462Salfred delete_cache(&addr_to_delete); 32274462Salfred rwlock_unlock(&rpcbaddr_cache_lock); 32374462Salfred free(addr_to_delete.buf); 32474462Salfred } 32574462Salfred if (!__rpc_nconf2sockinfo(nconf, &si)) { 32674462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 32774462Salfred return NULL; 32874462Salfred } 32974462Salfred 33074462Salfred memset(&hints, 0, sizeof hints); 33174462Salfred hints.ai_family = si.si_af; 33274462Salfred hints.ai_socktype = si.si_socktype; 33374462Salfred hints.ai_protocol = si.si_proto; 33474462Salfred 33574462Salfred#ifdef CLNT_DEBUG 33674462Salfred printf("trying netid %s family %d proto %d socktype %d\n", 33774462Salfred nconf->nc_netid, si.si_af, si.si_proto, si.si_socktype); 33874462Salfred#endif 33974462Salfred 34090269Salfred if (nconf->nc_protofmly != NULL && strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) { 34190269Salfred client = local_rpcb(); 34290269Salfred if (! client) { 34390269Salfred#ifdef ND_DEBUG 34490269Salfred clnt_pcreateerror("rpcbind clnt interface"); 34590269Salfred#endif 34690269Salfred return (NULL); 34790269Salfred } else { 34890269Salfred struct sockaddr_un sun; 349172259Smatteo if (targaddr) { 350172259Smatteo *targaddr = malloc(sizeof(sun.sun_path)); 351172259Smatteo if (*targaddr == NULL) { 352172259Smatteo CLNT_DESTROY(client); 353172259Smatteo return (NULL); 354172259Smatteo } 355172259Smatteo strncpy(*targaddr, _PATH_RPCBINDSOCK, 356172259Smatteo sizeof(sun.sun_path)); 357172259Smatteo } 35890269Salfred return (client); 35990269Salfred } 36090269Salfred } else { 36190269Salfred if (getaddrinfo(host, "sunrpc", &hints, &res) != 0) { 36290269Salfred rpc_createerr.cf_stat = RPC_UNKNOWNHOST; 36390269Salfred return NULL; 36490269Salfred } 36574462Salfred } 36674462Salfred 36774462Salfred for (tres = res; tres != NULL; tres = tres->ai_next) { 36874462Salfred taddr.buf = tres->ai_addr; 36974462Salfred taddr.len = taddr.maxlen = tres->ai_addrlen; 37074462Salfred 37174462Salfred#ifdef ND_DEBUG 37274462Salfred { 37374462Salfred char *ua; 37474462Salfred 37574462Salfred ua = taddr2uaddr(nconf, &taddr); 37674462Salfred fprintf(stderr, "Got it [%s]\n", ua); 37774462Salfred free(ua); 37874462Salfred } 37974462Salfred#endif 38074462Salfred 38174462Salfred#ifdef ND_DEBUG 38274462Salfred { 38374462Salfred int i; 38474462Salfred 38574462Salfred fprintf(stderr, "\tnetbuf len = %d, maxlen = %d\n", 38674462Salfred taddr.len, taddr.maxlen); 38774462Salfred fprintf(stderr, "\tAddress is "); 38874462Salfred for (i = 0; i < taddr.len; i++) 38974462Salfred fprintf(stderr, "%u.", ((char *)(taddr.buf))[i]); 39074462Salfred fprintf(stderr, "\n"); 39174462Salfred } 39274462Salfred#endif 39374462Salfred client = clnt_tli_create(RPC_ANYFD, nconf, &taddr, 39474462Salfred (rpcprog_t)RPCBPROG, (rpcvers_t)RPCBVERS4, 0, 0); 39574462Salfred#ifdef ND_DEBUG 39674462Salfred if (! client) { 39774462Salfred clnt_pcreateerror("rpcbind clnt interface"); 39874462Salfred } 39974462Salfred#endif 40074462Salfred 40174462Salfred if (client) { 40274462Salfred tmpaddr = targaddr ? taddr2uaddr(nconf, &taddr) : NULL; 40374462Salfred add_cache(host, nconf->nc_netid, &taddr, tmpaddr); 40474462Salfred if (targaddr) 40574462Salfred *targaddr = tmpaddr; 40674462Salfred break; 40774462Salfred } 40874462Salfred } 40990269Salfred if (res) 41090269Salfred freeaddrinfo(res); 41174462Salfred return (client); 41274462Salfred} 41374462Salfred 41474462Salfred/* XXX */ 41574462Salfred#define IN4_LOCALHOST_STRING "127.0.0.1" 41674462Salfred#define IN6_LOCALHOST_STRING "::1" 41774462Salfred 41874462Salfred/* 41974462Salfred * This routine will return a client handle that is connected to the local 42074462Salfred * rpcbind. Returns NULL on error and free's everything. 42174462Salfred */ 42274462Salfredstatic CLIENT * 423309487Sngielocal_rpcb(void) 42474462Salfred{ 42574462Salfred CLIENT *client; 42674462Salfred static struct netconfig *loopnconf; 42774462Salfred static char *hostname; 42874462Salfred int sock; 42974462Salfred size_t tsize; 43074462Salfred struct netbuf nbuf; 43174462Salfred struct sockaddr_un sun; 43274462Salfred 43374462Salfred /* 43474462Salfred * Try connecting to the local rpcbind through a local socket 43574462Salfred * first. If this doesn't work, try all transports defined in 43674462Salfred * the netconfig file. 43774462Salfred */ 43874462Salfred memset(&sun, 0, sizeof sun); 43974462Salfred sock = _socket(AF_LOCAL, SOCK_STREAM, 0); 44074462Salfred if (sock < 0) 44174462Salfred goto try_nconf; 44274462Salfred sun.sun_family = AF_LOCAL; 44374462Salfred strcpy(sun.sun_path, _PATH_RPCBINDSOCK); 44474462Salfred nbuf.len = sun.sun_len = SUN_LEN(&sun); 44574462Salfred nbuf.maxlen = sizeof (struct sockaddr_un); 44674462Salfred nbuf.buf = &sun; 44774462Salfred 44874462Salfred tsize = __rpc_get_t_size(AF_LOCAL, 0, 0); 44974462Salfred client = clnt_vc_create(sock, &nbuf, (rpcprog_t)RPCBPROG, 45074462Salfred (rpcvers_t)RPCBVERS, tsize, tsize); 45174462Salfred 45290735Siedowse if (client != NULL) { 45390735Siedowse /* Mark the socket to be closed in destructor */ 45490735Siedowse (void) CLNT_CONTROL(client, CLSET_FD_CLOSE, NULL); 45574462Salfred return client; 45690735Siedowse } 45774462Salfred 45890735Siedowse /* Nobody needs this socket anymore; free the descriptor. */ 45990735Siedowse _close(sock); 46090735Siedowse 46174462Salfredtry_nconf: 46274462Salfred 46374462Salfred/* VARIABLES PROTECTED BY loopnconf_lock: loopnconf */ 46474462Salfred mutex_lock(&loopnconf_lock); 46574462Salfred if (loopnconf == NULL) { 46674462Salfred struct netconfig *nconf, *tmpnconf = NULL; 46774462Salfred void *nc_handle; 46874462Salfred int fd; 46974462Salfred 47074462Salfred nc_handle = setnetconfig(); 47174462Salfred if (nc_handle == NULL) { 47274462Salfred /* fails to open netconfig file */ 47374462Salfred syslog (LOG_ERR, "rpc: failed to open " NETCONFIG); 47474462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 47574462Salfred mutex_unlock(&loopnconf_lock); 47674462Salfred return (NULL); 47774462Salfred } 47874462Salfred while ((nconf = getnetconfig(nc_handle)) != NULL) { 47974462Salfred#ifdef INET6 48074462Salfred if ((strcmp(nconf->nc_protofmly, NC_INET6) == 0 || 48174462Salfred#else 48274462Salfred if (( 48374462Salfred#endif 48474462Salfred strcmp(nconf->nc_protofmly, NC_INET) == 0) && 48574462Salfred (nconf->nc_semantics == NC_TPI_COTS || 48674462Salfred nconf->nc_semantics == NC_TPI_COTS_ORD)) { 48774462Salfred fd = __rpc_nconf2fd(nconf); 48874462Salfred /* 48974462Salfred * Can't create a socket, assume that 49074462Salfred * this family isn't configured in the kernel. 49174462Salfred */ 49274462Salfred if (fd < 0) 49374462Salfred continue; 49474462Salfred _close(fd); 49574462Salfred tmpnconf = nconf; 49674462Salfred if (!strcmp(nconf->nc_protofmly, NC_INET)) 49774462Salfred hostname = IN4_LOCALHOST_STRING; 49874462Salfred else 49974462Salfred hostname = IN6_LOCALHOST_STRING; 50074462Salfred } 50174462Salfred } 50274462Salfred if (tmpnconf == NULL) { 503320325Sdelphij endnetconfig(nc_handle); 50474462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 50574462Salfred mutex_unlock(&loopnconf_lock); 50674462Salfred return (NULL); 50774462Salfred } 50874462Salfred loopnconf = getnetconfigent(tmpnconf->nc_netid); 50974462Salfred /* loopnconf is never freed */ 510320325Sdelphij endnetconfig(nc_handle); 51174462Salfred } 51274462Salfred mutex_unlock(&loopnconf_lock); 51374462Salfred client = getclnthandle(hostname, loopnconf, NULL); 51474462Salfred return (client); 51574462Salfred} 51674462Salfred 51774462Salfred/* 51874462Salfred * Set a mapping between program, version and address. 51974462Salfred * Calls the rpcbind service to do the mapping. 520309489Sngie * 521309489Sngie * nconf - Network structure of transport 522309489Sngie * address - Services netconfig address 52374462Salfred */ 52474462Salfredbool_t 525309489Sngierpcb_set(rpcprog_t program, rpcvers_t version, const struct netconfig *nconf, 526309489Sngie const struct netbuf *address) 52774462Salfred{ 52874462Salfred CLIENT *client; 52974462Salfred bool_t rslt = FALSE; 53074462Salfred RPCB parms; 53174462Salfred char uidbuf[32]; 53274462Salfred 53374462Salfred /* parameter checking */ 53474462Salfred if (nconf == NULL) { 53574462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 53674462Salfred return (FALSE); 53774462Salfred } 53874462Salfred if (address == NULL) { 53974462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNADDR; 54074462Salfred return (FALSE); 54174462Salfred } 54274462Salfred client = local_rpcb(); 54374462Salfred if (! client) { 54474462Salfred return (FALSE); 54574462Salfred } 54674462Salfred 54774462Salfred /* convert to universal */ 54874462Salfred /*LINTED const castaway*/ 54974462Salfred parms.r_addr = taddr2uaddr((struct netconfig *) nconf, 55074462Salfred (struct netbuf *)address); 55174462Salfred if (!parms.r_addr) { 55290735Siedowse CLNT_DESTROY(client); 55374462Salfred rpc_createerr.cf_stat = RPC_N2AXLATEFAILURE; 55474462Salfred return (FALSE); /* no universal address */ 55574462Salfred } 55674462Salfred parms.r_prog = program; 55774462Salfred parms.r_vers = version; 55874462Salfred parms.r_netid = nconf->nc_netid; 55974462Salfred /* 56074462Salfred * Though uid is not being used directly, we still send it for 56174462Salfred * completeness. For non-unix platforms, perhaps some other 56274462Salfred * string or an empty string can be sent. 56374462Salfred */ 56474462Salfred (void) snprintf(uidbuf, sizeof uidbuf, "%d", geteuid()); 56574462Salfred parms.r_owner = uidbuf; 56674462Salfred 56774462Salfred CLNT_CALL(client, (rpcproc_t)RPCBPROC_SET, (xdrproc_t) xdr_rpcb, 56874462Salfred (char *)(void *)&parms, (xdrproc_t) xdr_bool, 56974462Salfred (char *)(void *)&rslt, tottimeout); 57074462Salfred 57174462Salfred CLNT_DESTROY(client); 57274462Salfred free(parms.r_addr); 57374462Salfred return (rslt); 57474462Salfred} 57574462Salfred 57674462Salfred/* 57774462Salfred * Remove the mapping between program, version and netbuf address. 57874462Salfred * Calls the rpcbind service to do the un-mapping. 57974462Salfred * If netbuf is NULL, unset for all the transports, otherwise unset 58074462Salfred * only for the given transport. 58174462Salfred */ 58274462Salfredbool_t 583309489Sngierpcb_unset(rpcprog_t program, rpcvers_t version, const struct netconfig *nconf) 58474462Salfred{ 58574462Salfred CLIENT *client; 58674462Salfred bool_t rslt = FALSE; 58774462Salfred RPCB parms; 58874462Salfred char uidbuf[32]; 58974462Salfred 59074462Salfred client = local_rpcb(); 59174462Salfred if (! client) { 59274462Salfred return (FALSE); 59374462Salfred } 59474462Salfred 59574462Salfred parms.r_prog = program; 59674462Salfred parms.r_vers = version; 59774462Salfred if (nconf) 59874462Salfred parms.r_netid = nconf->nc_netid; 59974462Salfred else { 60074462Salfred /*LINTED const castaway*/ 60174462Salfred parms.r_netid = (char *) &nullstring[0]; /* unsets all */ 60274462Salfred } 60374462Salfred /*LINTED const castaway*/ 60474462Salfred parms.r_addr = (char *) &nullstring[0]; 60574462Salfred (void) snprintf(uidbuf, sizeof uidbuf, "%d", geteuid()); 60674462Salfred parms.r_owner = uidbuf; 60774462Salfred 60874462Salfred CLNT_CALL(client, (rpcproc_t)RPCBPROC_UNSET, (xdrproc_t) xdr_rpcb, 60974462Salfred (char *)(void *)&parms, (xdrproc_t) xdr_bool, 61074462Salfred (char *)(void *)&rslt, tottimeout); 61174462Salfred 61274462Salfred CLNT_DESTROY(client); 61374462Salfred return (rslt); 61474462Salfred} 61574462Salfred 61674462Salfred/* 61774462Salfred * From the merged list, find the appropriate entry 61874462Salfred */ 61974462Salfredstatic struct netbuf * 620309489Sngiegot_entry(rpcb_entry_list_ptr relp, const struct netconfig *nconf) 62174462Salfred{ 62274462Salfred struct netbuf *na = NULL; 62374462Salfred rpcb_entry_list_ptr sp; 62474462Salfred rpcb_entry *rmap; 62574462Salfred 62674462Salfred for (sp = relp; sp != NULL; sp = sp->rpcb_entry_next) { 62774462Salfred rmap = &sp->rpcb_entry_map; 62874462Salfred if ((strcmp(nconf->nc_proto, rmap->r_nc_proto) == 0) && 62974462Salfred (strcmp(nconf->nc_protofmly, rmap->r_nc_protofmly) == 0) && 63074462Salfred (nconf->nc_semantics == rmap->r_nc_semantics) && 631121653Smbr (rmap->r_maddr != NULL) && (rmap->r_maddr[0] != 0)) { 63274462Salfred na = uaddr2taddr(nconf, rmap->r_maddr); 63374462Salfred#ifdef ND_DEBUG 63474462Salfred fprintf(stderr, "\tRemote address is [%s].\n", 63574462Salfred rmap->r_maddr); 63674462Salfred if (!na) 63774462Salfred fprintf(stderr, 63874462Salfred "\tCouldn't resolve remote address!\n"); 63974462Salfred#endif 64074462Salfred break; 64174462Salfred } 64274462Salfred } 64374462Salfred return (na); 64474462Salfred} 64574462Salfred 64674462Salfred/* 64799775Salfred * Quick check to see if rpcbind is up. Tries to connect over 64899775Salfred * local transport. 64999775Salfred */ 650156090Sdeischenstatic bool_t 651309484Sngie__rpcbind_is_up(void) 65299775Salfred{ 65399775Salfred struct netconfig *nconf; 65499775Salfred struct sockaddr_un sun; 65599775Salfred void *localhandle; 65699775Salfred int sock; 65799775Salfred 65899775Salfred nconf = NULL; 65999775Salfred localhandle = setnetconfig(); 660100701Siedowse while ((nconf = getnetconfig(localhandle)) != NULL) { 66199775Salfred if (nconf->nc_protofmly != NULL && 66299775Salfred strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) 66399775Salfred break; 66499775Salfred } 665294240Sngie endnetconfig(localhandle); 666294240Sngie 66799775Salfred if (nconf == NULL) 66899775Salfred return (FALSE); 66999775Salfred 67099775Salfred memset(&sun, 0, sizeof sun); 67199775Salfred sock = _socket(AF_LOCAL, SOCK_STREAM, 0); 67299775Salfred if (sock < 0) 67399775Salfred return (FALSE); 67499775Salfred sun.sun_family = AF_LOCAL; 67599775Salfred strncpy(sun.sun_path, _PATH_RPCBINDSOCK, sizeof(sun.sun_path)); 67699775Salfred sun.sun_len = SUN_LEN(&sun); 67799775Salfred 67899775Salfred if (_connect(sock, (struct sockaddr *)&sun, sun.sun_len) < 0) { 67999775Salfred _close(sock); 68099775Salfred return (FALSE); 68199775Salfred } 68299775Salfred 68399775Salfred _close(sock); 68499775Salfred return (TRUE); 68599775Salfred} 68699775Salfred 68799775Salfred/* 68874462Salfred * An internal function which optimizes rpcb_getaddr function. It also 68974462Salfred * returns the client handle that it uses to contact the remote rpcbind. 69074462Salfred * 69174462Salfred * The algorithm used: If the transports is TCP or UDP, it first tries 69274462Salfred * version 2 (portmap), 4 and then 3 (svr4). This order should be 69374462Salfred * changed in the next OS release to 4, 2 and 3. We are assuming that by 69474462Salfred * that time, version 4 would be available on many machines on the network. 69574462Salfred * With this algorithm, we get performance as well as a plan for 69674462Salfred * obsoleting version 2. 69774462Salfred * 69874462Salfred * For all other transports, the algorithm remains as 4 and then 3. 69974462Salfred * 70074462Salfred * XXX: Due to some problems with t_connect(), we do not reuse the same client 70174462Salfred * handle for COTS cases and hence in these cases we do not return the 70274462Salfred * client handle. This code will change if t_connect() ever 70374462Salfred * starts working properly. Also look under clnt_vc.c. 70474462Salfred */ 70574462Salfredstruct netbuf * 706309489Sngie__rpcb_findaddr_timed(rpcprog_t program, rpcvers_t version, 707309489Sngie const struct netconfig *nconf, const char *host, 708309489Sngie CLIENT **clpp, struct timeval *tp) 70974462Salfred{ 71099775Salfred static bool_t check_rpcbind = TRUE; 71174462Salfred CLIENT *client = NULL; 71274462Salfred RPCB parms; 71374462Salfred enum clnt_stat clnt_st; 71474462Salfred char *ua = NULL; 71574462Salfred rpcvers_t vers; 71674462Salfred struct netbuf *address = NULL; 71774462Salfred rpcvers_t start_vers = RPCBVERS4; 71874462Salfred struct netbuf servaddr; 71974462Salfred 72074462Salfred /* parameter checking */ 72174462Salfred if (nconf == NULL) { 72274462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 72374462Salfred return (NULL); 72474462Salfred } 72574462Salfred 72674462Salfred parms.r_addr = NULL; 72774462Salfred 72899775Salfred /* 72999775Salfred * Use default total timeout if no timeout is specified. 73099775Salfred */ 73199775Salfred if (tp == NULL) 73299775Salfred tp = &tottimeout; 73399775Salfred 73474462Salfred#ifdef PORTMAP 73574462Salfred /* Try version 2 for TCP or UDP */ 73674462Salfred if (strcmp(nconf->nc_protofmly, NC_INET) == 0) { 73774462Salfred u_short port = 0; 73874462Salfred struct netbuf remote; 73974462Salfred rpcvers_t pmapvers = 2; 74074462Salfred struct pmap pmapparms; 74174462Salfred 74274462Salfred /* 74374462Salfred * Try UDP only - there are some portmappers out 74474462Salfred * there that use UDP only. 74574462Salfred */ 74674462Salfred if (strcmp(nconf->nc_proto, NC_TCP) == 0) { 74774462Salfred struct netconfig *newnconf; 74874462Salfred 749100701Siedowse if ((newnconf = getnetconfigent("udp")) == NULL) { 75074462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 75174462Salfred return (NULL); 75274462Salfred } 75374462Salfred client = getclnthandle(host, newnconf, &parms.r_addr); 754100701Siedowse freenetconfigent(newnconf); 75574462Salfred } else { 75674462Salfred client = getclnthandle(host, nconf, &parms.r_addr); 75774462Salfred } 75899775Salfred if (client == NULL) 75974462Salfred return (NULL); 76074462Salfred 76199775Salfred /* 76299775Salfred * Set version and retry timeout. 76399775Salfred */ 76499775Salfred CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)&rpcbrmttime); 76599775Salfred CLNT_CONTROL(client, CLSET_VERS, (char *)&pmapvers); 76699775Salfred 76774462Salfred pmapparms.pm_prog = program; 76874462Salfred pmapparms.pm_vers = version; 76974462Salfred pmapparms.pm_prot = strcmp(nconf->nc_proto, NC_TCP) ? 77074462Salfred IPPROTO_UDP : IPPROTO_TCP; 77174462Salfred pmapparms.pm_port = 0; /* not needed */ 77274462Salfred clnt_st = CLNT_CALL(client, (rpcproc_t)PMAPPROC_GETPORT, 77374462Salfred (xdrproc_t) xdr_pmap, (caddr_t)(void *)&pmapparms, 77474462Salfred (xdrproc_t) xdr_u_short, (caddr_t)(void *)&port, 77599775Salfred *tp); 77674462Salfred if (clnt_st != RPC_SUCCESS) { 77774462Salfred if ((clnt_st == RPC_PROGVERSMISMATCH) || 77874462Salfred (clnt_st == RPC_PROGUNAVAIL)) 77974462Salfred goto try_rpcbind; /* Try different versions */ 78074462Salfred rpc_createerr.cf_stat = RPC_PMAPFAILURE; 78174462Salfred clnt_geterr(client, &rpc_createerr.cf_error); 78274462Salfred goto error; 78374462Salfred } else if (port == 0) { 78474462Salfred address = NULL; 78574462Salfred rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED; 78674462Salfred goto error; 78774462Salfred } 78874462Salfred port = htons(port); 78999775Salfred CLNT_CONTROL(client, CLGET_SVC_ADDR, (char *)&remote); 79074462Salfred if (((address = (struct netbuf *) 79174462Salfred malloc(sizeof (struct netbuf))) == NULL) || 79274462Salfred ((address->buf = (char *) 79374462Salfred malloc(remote.len)) == NULL)) { 79474462Salfred rpc_createerr.cf_stat = RPC_SYSTEMERROR; 79574462Salfred clnt_geterr(client, &rpc_createerr.cf_error); 796290899Sngie free(address); 797290899Sngie address = NULL; 79874462Salfred goto error; 79974462Salfred } 80074462Salfred memcpy(address->buf, remote.buf, remote.len); 80174462Salfred memcpy(&((char *)address->buf)[sizeof (short)], 80274462Salfred (char *)(void *)&port, sizeof (short)); 80374462Salfred address->len = address->maxlen = remote.len; 80474462Salfred goto done; 80574462Salfred } 80674462Salfred#endif /* PORTMAP */ 80774462Salfred 80874462Salfredtry_rpcbind: 80974462Salfred /* 81099775Salfred * Check if rpcbind is up. This prevents needless delays when 81199775Salfred * accessing applications such as the keyserver while booting 81299775Salfred * disklessly. 81399775Salfred */ 81499775Salfred if (check_rpcbind && strcmp(nconf->nc_protofmly, NC_LOOPBACK) == 0) { 81599775Salfred if (!__rpcbind_is_up()) { 81699775Salfred rpc_createerr.cf_stat = RPC_PMAPFAILURE; 81799775Salfred rpc_createerr.cf_error.re_errno = 0; 81899775Salfred goto error; 81999775Salfred } 82099775Salfred check_rpcbind = FALSE; 82199775Salfred } 82299775Salfred 82399775Salfred /* 82474462Salfred * Now we try version 4 and then 3. 82574462Salfred * We also send the remote system the address we used to 82674462Salfred * contact it in case it can help to connect back with us 82774462Salfred */ 82874462Salfred parms.r_prog = program; 82974462Salfred parms.r_vers = version; 83074462Salfred /*LINTED const castaway*/ 83174462Salfred parms.r_owner = (char *) &nullstring[0]; /* not needed; */ 83274462Salfred /* just for xdring */ 83374462Salfred parms.r_netid = nconf->nc_netid; /* not really needed */ 83474462Salfred 83574462Salfred /* 83674462Salfred * If a COTS transport is being used, try getting address via CLTS 83774462Salfred * transport. This works only with version 4. 83874462Salfred */ 83999775Salfred if (nconf->nc_semantics == NC_TPI_COTS_ORD || 84099775Salfred nconf->nc_semantics == NC_TPI_COTS) { 84199775Salfred 84274462Salfred void *handle; 84374462Salfred struct netconfig *nconf_clts; 84474462Salfred rpcb_entry_list_ptr relp = NULL; 84574462Salfred 84674462Salfred if (client == NULL) { 84774462Salfred /* This did not go through the above PORTMAP/TCP code */ 84874462Salfred if ((handle = __rpc_setconf("datagram_v")) != NULL) { 84974462Salfred while ((nconf_clts = __rpc_getconf(handle)) 85074462Salfred != NULL) { 85174462Salfred if (strcmp(nconf_clts->nc_protofmly, 85274462Salfred nconf->nc_protofmly) != 0) { 85374462Salfred continue; 85474462Salfred } 85574462Salfred client = getclnthandle(host, nconf_clts, 85674462Salfred &parms.r_addr); 85774462Salfred break; 85874462Salfred } 85974462Salfred __rpc_endconf(handle); 86074462Salfred } 86174462Salfred if (client == NULL) 86274462Salfred goto regular_rpcbind; /* Go the regular way */ 86374462Salfred } else { 86474462Salfred /* This is a UDP PORTMAP handle. Change to version 4 */ 86574462Salfred vers = RPCBVERS4; 86674462Salfred CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers); 86774462Salfred } 86874462Salfred /* 86974462Salfred * We also send the remote system the address we used to 87074462Salfred * contact it in case it can help it connect back with us 87174462Salfred */ 87274462Salfred if (parms.r_addr == NULL) { 87374462Salfred /*LINTED const castaway*/ 87474462Salfred parms.r_addr = (char *) &nullstring[0]; /* for XDRing */ 87574462Salfred } 87699775Salfred 87799775Salfred CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)&rpcbrmttime); 87899775Salfred 87974462Salfred clnt_st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETADDRLIST, 88074462Salfred (xdrproc_t) xdr_rpcb, (char *)(void *)&parms, 88174462Salfred (xdrproc_t) xdr_rpcb_entry_list_ptr, 88299775Salfred (char *)(void *)&relp, *tp); 88374462Salfred if (clnt_st == RPC_SUCCESS) { 88474462Salfred if ((address = got_entry(relp, nconf)) != NULL) { 88574462Salfred xdr_free((xdrproc_t) xdr_rpcb_entry_list_ptr, 88674462Salfred (char *)(void *)&relp); 887109952Smbr CLNT_CONTROL(client, CLGET_SVC_ADDR, 888109952Smbr (char *)(void *)&servaddr); 889109952Smbr __rpc_fixup_addr(address, &servaddr); 89074462Salfred goto done; 89174462Salfred } 89274462Salfred /* Entry not found for this transport */ 89374462Salfred xdr_free((xdrproc_t) xdr_rpcb_entry_list_ptr, 89474462Salfred (char *)(void *)&relp); 89574462Salfred /* 89674462Salfred * XXX: should have perhaps returned with error but 89774462Salfred * since the remote machine might not always be able 89874462Salfred * to send the address on all transports, we try the 89974462Salfred * regular way with regular_rpcbind 90074462Salfred */ 90174462Salfred goto regular_rpcbind; 90274462Salfred } else if ((clnt_st == RPC_PROGVERSMISMATCH) || 90374462Salfred (clnt_st == RPC_PROGUNAVAIL)) { 90474462Salfred start_vers = RPCBVERS; /* Try version 3 now */ 90574462Salfred goto regular_rpcbind; /* Try different versions */ 90674462Salfred } else { 90774462Salfred rpc_createerr.cf_stat = RPC_PMAPFAILURE; 90874462Salfred clnt_geterr(client, &rpc_createerr.cf_error); 90974462Salfred goto error; 91074462Salfred } 91174462Salfred } 91274462Salfred 91374462Salfredregular_rpcbind: 91474462Salfred 91574462Salfred /* Now the same transport is to be used to get the address */ 91674462Salfred if (client && ((nconf->nc_semantics == NC_TPI_COTS_ORD) || 91774462Salfred (nconf->nc_semantics == NC_TPI_COTS))) { 91874462Salfred /* A CLTS type of client - destroy it */ 91974462Salfred CLNT_DESTROY(client); 92074462Salfred client = NULL; 92174462Salfred } 92274462Salfred 92374462Salfred if (client == NULL) { 92474462Salfred client = getclnthandle(host, nconf, &parms.r_addr); 92574462Salfred if (client == NULL) { 92674462Salfred goto error; 92774462Salfred } 92874462Salfred } 92974462Salfred if (parms.r_addr == NULL) { 93074462Salfred /*LINTED const castaway*/ 93174462Salfred parms.r_addr = (char *) &nullstring[0]; 93274462Salfred } 93374462Salfred 93474462Salfred /* First try from start_vers and then version 3 (RPCBVERS) */ 93599775Salfred 93699775Salfred CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *) &rpcbrmttime); 93774462Salfred for (vers = start_vers; vers >= RPCBVERS; vers--) { 93874462Salfred /* Set the version */ 93974462Salfred CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers); 94074462Salfred clnt_st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETADDR, 94174462Salfred (xdrproc_t) xdr_rpcb, (char *)(void *)&parms, 94299775Salfred (xdrproc_t) xdr_wrapstring, (char *)(void *) &ua, *tp); 94374462Salfred if (clnt_st == RPC_SUCCESS) { 944121653Smbr if ((ua == NULL) || (ua[0] == 0)) { 94574462Salfred /* address unknown */ 94674462Salfred rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED; 94774462Salfred goto error; 94874462Salfred } 94974462Salfred address = uaddr2taddr(nconf, ua); 95074462Salfred#ifdef ND_DEBUG 95174462Salfred fprintf(stderr, "\tRemote address is [%s]\n", ua); 95274462Salfred if (!address) 95374462Salfred fprintf(stderr, 95474462Salfred "\tCouldn't resolve remote address!\n"); 95574462Salfred#endif 95674462Salfred xdr_free((xdrproc_t)xdr_wrapstring, 95774462Salfred (char *)(void *)&ua); 95874462Salfred 95974462Salfred if (! address) { 96074462Salfred /* We don't know about your universal address */ 96174462Salfred rpc_createerr.cf_stat = RPC_N2AXLATEFAILURE; 96274462Salfred goto error; 96374462Salfred } 96474462Salfred CLNT_CONTROL(client, CLGET_SVC_ADDR, 96574462Salfred (char *)(void *)&servaddr); 96674462Salfred __rpc_fixup_addr(address, &servaddr); 96774462Salfred goto done; 96874462Salfred } else if (clnt_st == RPC_PROGVERSMISMATCH) { 96974462Salfred struct rpc_err rpcerr; 97074462Salfred 97174462Salfred clnt_geterr(client, &rpcerr); 97274462Salfred if (rpcerr.re_vers.low > RPCBVERS4) 97374462Salfred goto error; /* a new version, can't handle */ 97474462Salfred } else if (clnt_st != RPC_PROGUNAVAIL) { 97574462Salfred /* Cant handle this error */ 97674462Salfred rpc_createerr.cf_stat = clnt_st; 97774462Salfred clnt_geterr(client, &rpc_createerr.cf_error); 97874462Salfred goto error; 97974462Salfred } 98074462Salfred } 98174462Salfred 98274462Salfrederror: 98374462Salfred if (client) { 98474462Salfred CLNT_DESTROY(client); 98574462Salfred client = NULL; 98674462Salfred } 98774462Salfreddone: 98874462Salfred if (nconf->nc_semantics != NC_TPI_CLTS) { 98974462Salfred /* This client is the connectionless one */ 99074462Salfred if (client) { 99174462Salfred CLNT_DESTROY(client); 99274462Salfred client = NULL; 99374462Salfred } 99474462Salfred } 99574462Salfred if (clpp) { 99674462Salfred *clpp = client; 99774462Salfred } else if (client) { 99874462Salfred CLNT_DESTROY(client); 99974462Salfred } 100079726Siedowse if (parms.r_addr != NULL && parms.r_addr != nullstring) 100179726Siedowse free(parms.r_addr); 100274462Salfred return (address); 100374462Salfred} 100474462Salfred 100574462Salfred 100674462Salfred/* 100774462Salfred * Find the mapped address for program, version. 100874462Salfred * Calls the rpcbind service remotely to do the lookup. 100974462Salfred * Uses the transport specified in nconf. 101074462Salfred * Returns FALSE (0) if no map exists, else returns 1. 101174462Salfred * 101274462Salfred * Assuming that the address is all properly allocated 101374462Salfred */ 1014309501Sngiebool_t 1015309489Sngierpcb_getaddr(rpcprog_t program, rpcvers_t version, const struct netconfig *nconf, 1016309489Sngie struct netbuf *address, const char *host) 101774462Salfred{ 101874462Salfred struct netbuf *na; 101974462Salfred 102099775Salfred if ((na = __rpcb_findaddr_timed(program, version, 102199775Salfred (struct netconfig *) nconf, (char *) host, 102299775Salfred (CLIENT **) NULL, (struct timeval *) NULL)) == NULL) 102374462Salfred return (FALSE); 102474462Salfred 102574462Salfred if (na->len > address->maxlen) { 102674462Salfred /* Too long address */ 102774462Salfred free(na->buf); 102874462Salfred free(na); 102974462Salfred rpc_createerr.cf_stat = RPC_FAILED; 103074462Salfred return (FALSE); 103174462Salfred } 103274462Salfred memcpy(address->buf, na->buf, (size_t)na->len); 103374462Salfred address->len = na->len; 103474462Salfred free(na->buf); 103574462Salfred free(na); 103674462Salfred return (TRUE); 103774462Salfred} 103874462Salfred 103974462Salfred/* 104074462Salfred * Get a copy of the current maps. 104174462Salfred * Calls the rpcbind service remotely to get the maps. 104274462Salfred * 104374462Salfred * It returns only a list of the services 104474462Salfred * It returns NULL on failure. 104574462Salfred */ 104674462Salfredrpcblist * 1047309489Sngierpcb_getmaps(const struct netconfig *nconf, const char *host) 104874462Salfred{ 104974462Salfred rpcblist_ptr head = NULL; 105074462Salfred CLIENT *client; 105174462Salfred enum clnt_stat clnt_st; 105274462Salfred rpcvers_t vers = 0; 105374462Salfred 105474462Salfred client = getclnthandle(host, nconf, NULL); 105574462Salfred if (client == NULL) { 105674462Salfred return (head); 105774462Salfred } 105874462Salfred clnt_st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_DUMP, 105974462Salfred (xdrproc_t) xdr_void, NULL, (xdrproc_t) xdr_rpcblist_ptr, 106074462Salfred (char *)(void *)&head, tottimeout); 106174462Salfred if (clnt_st == RPC_SUCCESS) 106274462Salfred goto done; 106374462Salfred 106474462Salfred if ((clnt_st != RPC_PROGVERSMISMATCH) && 106574462Salfred (clnt_st != RPC_PROGUNAVAIL)) { 106674462Salfred rpc_createerr.cf_stat = RPC_RPCBFAILURE; 106774462Salfred clnt_geterr(client, &rpc_createerr.cf_error); 106874462Salfred goto done; 106974462Salfred } 107074462Salfred 107174462Salfred /* fall back to earlier version */ 107274462Salfred CLNT_CONTROL(client, CLGET_VERS, (char *)(void *)&vers); 107374462Salfred if (vers == RPCBVERS4) { 107474462Salfred vers = RPCBVERS; 107574462Salfred CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers); 107674462Salfred if (CLNT_CALL(client, (rpcproc_t)RPCBPROC_DUMP, 107774462Salfred (xdrproc_t) xdr_void, NULL, (xdrproc_t) xdr_rpcblist_ptr, 107874462Salfred (char *)(void *)&head, tottimeout) == RPC_SUCCESS) 107974462Salfred goto done; 108074462Salfred } 108174462Salfred rpc_createerr.cf_stat = RPC_RPCBFAILURE; 108274462Salfred clnt_geterr(client, &rpc_createerr.cf_error); 108374462Salfred 108474462Salfreddone: 108574462Salfred CLNT_DESTROY(client); 108674462Salfred return (head); 108774462Salfred} 108874462Salfred 108974462Salfred/* 109074462Salfred * rpcbinder remote-call-service interface. 109174462Salfred * This routine is used to call the rpcbind remote call service 109274462Salfred * which will look up a service program in the address maps, and then 109374462Salfred * remotely call that routine with the given parameters. This allows 109474462Salfred * programs to do a lookup and call in one step. 1095309487Sngie * 1096309487Sngie * nconf -Netconfig structure 1097309487Sngie * host - Remote host name 1098309487Sngie * proc - Remote proc identifiers 1099309487Sngie * xdrargs, xdrres; XDR routines 1100309487Sngie * argsp, resp - Argument and Result 1101309487Sngie * tout - Timeout value for this call 1102309487Sngie * addr_ptr - Preallocated netbuf address 1103309487Sngie */ 110474462Salfredenum clnt_stat 1105309487Sngierpcb_rmtcall(const struct netconfig *nconf, const char *host, rpcprog_t prog, 1106309487Sngie rpcvers_t vers, rpcproc_t proc, xdrproc_t xdrargs, caddr_t argsp, 1107309487Sngie xdrproc_t xdrres, caddr_t resp, struct timeval tout, 1108309487Sngie const struct netbuf *addr_ptr) 110974462Salfred{ 111074462Salfred CLIENT *client; 111174462Salfred enum clnt_stat stat; 111274462Salfred struct r_rpcb_rmtcallargs a; 111374462Salfred struct r_rpcb_rmtcallres r; 111474462Salfred rpcvers_t rpcb_vers; 111574462Salfred 111679726Siedowse stat = 0; 111774462Salfred client = getclnthandle(host, nconf, NULL); 111874462Salfred if (client == NULL) { 111974462Salfred return (RPC_FAILED); 112074462Salfred } 112174462Salfred /*LINTED const castaway*/ 112274462Salfred CLNT_CONTROL(client, CLSET_RETRY_TIMEOUT, (char *)(void *)&rmttimeout); 112374462Salfred a.prog = prog; 112474462Salfred a.vers = vers; 112574462Salfred a.proc = proc; 112674462Salfred a.args.args_val = argsp; 112774462Salfred a.xdr_args = xdrargs; 112874462Salfred r.addr = NULL; 112974462Salfred r.results.results_val = resp; 113074462Salfred r.xdr_res = xdrres; 113174462Salfred 113274462Salfred for (rpcb_vers = RPCBVERS4; rpcb_vers >= RPCBVERS; rpcb_vers--) { 113374462Salfred CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&rpcb_vers); 113474462Salfred stat = CLNT_CALL(client, (rpcproc_t)RPCBPROC_CALLIT, 113574462Salfred (xdrproc_t) xdr_rpcb_rmtcallargs, (char *)(void *)&a, 113674462Salfred (xdrproc_t) xdr_rpcb_rmtcallres, (char *)(void *)&r, tout); 113774462Salfred if ((stat == RPC_SUCCESS) && (addr_ptr != NULL)) { 113874462Salfred struct netbuf *na; 113974462Salfred /*LINTED const castaway*/ 114074462Salfred na = uaddr2taddr((struct netconfig *) nconf, r.addr); 114174462Salfred if (!na) { 114274462Salfred stat = RPC_N2AXLATEFAILURE; 114374462Salfred /*LINTED const castaway*/ 114474462Salfred ((struct netbuf *) addr_ptr)->len = 0; 114574462Salfred goto error; 114674462Salfred } 114774462Salfred if (na->len > addr_ptr->maxlen) { 114874462Salfred /* Too long address */ 114974462Salfred stat = RPC_FAILED; /* XXX A better error no */ 115074462Salfred free(na->buf); 115174462Salfred free(na); 115274462Salfred /*LINTED const castaway*/ 115374462Salfred ((struct netbuf *) addr_ptr)->len = 0; 115474462Salfred goto error; 115574462Salfred } 115674462Salfred memcpy(addr_ptr->buf, na->buf, (size_t)na->len); 115774462Salfred /*LINTED const castaway*/ 115874462Salfred ((struct netbuf *)addr_ptr)->len = na->len; 115974462Salfred free(na->buf); 116074462Salfred free(na); 116174462Salfred break; 116274462Salfred } else if ((stat != RPC_PROGVERSMISMATCH) && 116374462Salfred (stat != RPC_PROGUNAVAIL)) { 116474462Salfred goto error; 116574462Salfred } 116674462Salfred } 116774462Salfrederror: 116874462Salfred CLNT_DESTROY(client); 116974462Salfred if (r.addr) 117074462Salfred xdr_free((xdrproc_t) xdr_wrapstring, (char *)(void *)&r.addr); 117174462Salfred return (stat); 117274462Salfred} 117374462Salfred 117474462Salfred/* 117574462Salfred * Gets the time on the remote host. 117674462Salfred * Returns 1 if succeeds else 0. 117774462Salfred */ 117874462Salfredbool_t 1179309489Sngierpcb_gettime(const char *host, time_t *timep) 118074462Salfred{ 118174462Salfred CLIENT *client = NULL; 118274462Salfred void *handle; 118374462Salfred struct netconfig *nconf; 118474462Salfred rpcvers_t vers; 118574462Salfred enum clnt_stat st; 118674462Salfred 118774462Salfred 1188121653Smbr if ((host == NULL) || (host[0] == 0)) { 118974462Salfred time(timep); 119074462Salfred return (TRUE); 119174462Salfred } 119274462Salfred 119374462Salfred if ((handle = __rpc_setconf("netpath")) == NULL) { 119474462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 119574462Salfred return (FALSE); 119674462Salfred } 119774462Salfred rpc_createerr.cf_stat = RPC_SUCCESS; 119874462Salfred while (client == NULL) { 119974462Salfred if ((nconf = __rpc_getconf(handle)) == NULL) { 120074462Salfred if (rpc_createerr.cf_stat == RPC_SUCCESS) 120174462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 120274462Salfred break; 120374462Salfred } 120474462Salfred client = getclnthandle(host, nconf, NULL); 120574462Salfred if (client) 120674462Salfred break; 120774462Salfred } 120874462Salfred __rpc_endconf(handle); 120974462Salfred if (client == (CLIENT *) NULL) { 121074462Salfred return (FALSE); 121174462Salfred } 121274462Salfred 121374462Salfred st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETTIME, 121474462Salfred (xdrproc_t) xdr_void, NULL, 121574462Salfred (xdrproc_t) xdr_int, (char *)(void *)timep, tottimeout); 121674462Salfred 121774462Salfred if ((st == RPC_PROGVERSMISMATCH) || (st == RPC_PROGUNAVAIL)) { 121874462Salfred CLNT_CONTROL(client, CLGET_VERS, (char *)(void *)&vers); 121974462Salfred if (vers == RPCBVERS4) { 122074462Salfred /* fall back to earlier version */ 122174462Salfred vers = RPCBVERS; 122274462Salfred CLNT_CONTROL(client, CLSET_VERS, (char *)(void *)&vers); 122374462Salfred st = CLNT_CALL(client, (rpcproc_t)RPCBPROC_GETTIME, 122474462Salfred (xdrproc_t) xdr_void, NULL, 122574462Salfred (xdrproc_t) xdr_int, (char *)(void *)timep, 122674462Salfred tottimeout); 122774462Salfred } 122874462Salfred } 122974462Salfred CLNT_DESTROY(client); 123074462Salfred return (st == RPC_SUCCESS? TRUE: FALSE); 123174462Salfred} 123274462Salfred 123374462Salfred/* 123474462Salfred * Converts taddr to universal address. This routine should never 123574462Salfred * really be called because local n2a libraries are always provided. 123674462Salfred */ 123774462Salfredchar * 1238309489Sngierpcb_taddr2uaddr(struct netconfig *nconf, struct netbuf *taddr) 123974462Salfred{ 124074462Salfred CLIENT *client; 124174462Salfred char *uaddr = NULL; 124274462Salfred 124374462Salfred 124474462Salfred /* parameter checking */ 124574462Salfred if (nconf == NULL) { 124674462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 124774462Salfred return (NULL); 124874462Salfred } 124974462Salfred if (taddr == NULL) { 125074462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNADDR; 125174462Salfred return (NULL); 125274462Salfred } 125374462Salfred client = local_rpcb(); 125474462Salfred if (! client) { 125574462Salfred return (NULL); 125674462Salfred } 125774462Salfred 125874462Salfred CLNT_CALL(client, (rpcproc_t)RPCBPROC_TADDR2UADDR, 125974462Salfred (xdrproc_t) xdr_netbuf, (char *)(void *)taddr, 126074462Salfred (xdrproc_t) xdr_wrapstring, (char *)(void *)&uaddr, tottimeout); 126174462Salfred CLNT_DESTROY(client); 126274462Salfred return (uaddr); 126374462Salfred} 126474462Salfred 126574462Salfred/* 126674462Salfred * Converts universal address to netbuf. This routine should never 126774462Salfred * really be called because local n2a libraries are always provided. 126874462Salfred */ 126974462Salfredstruct netbuf * 1270309489Sngierpcb_uaddr2taddr(struct netconfig *nconf, char *uaddr) 127174462Salfred{ 127274462Salfred CLIENT *client; 127374462Salfred struct netbuf *taddr; 127474462Salfred 127574462Salfred 127674462Salfred /* parameter checking */ 127774462Salfred if (nconf == NULL) { 127874462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 127974462Salfred return (NULL); 128074462Salfred } 128174462Salfred if (uaddr == NULL) { 128274462Salfred rpc_createerr.cf_stat = RPC_UNKNOWNADDR; 128374462Salfred return (NULL); 128474462Salfred } 128574462Salfred client = local_rpcb(); 128674462Salfred if (! client) { 128774462Salfred return (NULL); 128874462Salfred } 128974462Salfred 129074462Salfred taddr = (struct netbuf *)calloc(1, sizeof (struct netbuf)); 129174462Salfred if (taddr == NULL) { 129274462Salfred CLNT_DESTROY(client); 129374462Salfred return (NULL); 129474462Salfred } 129574462Salfred if (CLNT_CALL(client, (rpcproc_t)RPCBPROC_UADDR2TADDR, 129674462Salfred (xdrproc_t) xdr_wrapstring, (char *)(void *)&uaddr, 129774462Salfred (xdrproc_t) xdr_netbuf, (char *)(void *)taddr, 129874462Salfred tottimeout) != RPC_SUCCESS) { 129974462Salfred free(taddr); 130074462Salfred taddr = NULL; 130174462Salfred } 130274462Salfred CLNT_DESTROY(client); 130374462Salfred return (taddr); 130474462Salfred} 1305