diff --git a/lib/libc/rpc/clnt_bcast.c b/lib/libc/rpc/clnt_bcast.c index a194ba6c77cc..99f54082d002 100644 --- a/lib/libc/rpc/clnt_bcast.c +++ b/lib/libc/rpc/clnt_bcast.c @@ -1,678 +1,678 @@ /* $NetBSD: clnt_bcast.c,v 1.3 2000/07/06 03:05:20 christos Exp $ */ /*- * Copyright (c) 2009, Sun Microsystems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * - Neither the name of Sun Microsystems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Copyright (c) 1986-1991 by Sun Microsystems Inc. */ #if defined(LIBC_SCCS) && !defined(lint) #ident "@(#)clnt_bcast.c 1.18 94/05/03 SMI" static char sccsid[] = "@(#)clnt_bcast.c 1.15 89/04/21 Copyr 1988 Sun Micro"; #endif #include __FBSDID("$FreeBSD$"); /* * clnt_bcast.c * Client interface to broadcast service. * * Copyright (C) 1988, Sun Microsystems, Inc. * * The following is kludged-up support for simple rpc broadcasts. * Someday a large, complicated system will replace these routines. */ #include "namespace.h" #include #include #include #include #include #include #include #include #ifdef PORTMAP #include #include #include #endif /* PORTMAP */ #include #include #ifdef RPC_DEBUG #include #endif #include #include #include #include #include #include #include "un-namespace.h" #include "rpc_com.h" #define MAXBCAST 20 /* Max no of broadcasting transports */ #define INITTIME 4000 /* Time to wait initially */ #define WAITTIME 8000 /* Maximum time to wait */ /* * If nettype is NULL, it broadcasts on all the available * datagram_n transports. May potentially lead to broadacst storms * and hence should be used with caution, care and courage. * * The current parameter xdr packet size is limited by the max tsdu * size of the transport. If the max tsdu size of any transport is * smaller than the parameter xdr packet, then broadcast is not * sent on that transport. * * Also, the packet size should be less the packet size of * the data link layer (for ethernet it is 1400 bytes). There is * no easy way to find out the max size of the data link layer and * we are assuming that the args would be smaller than that. * * The result size has to be smaller than the transport tsdu size. * * If PORTMAP has been defined, we send two packets for UDP, one for * rpcbind and one for portmap. For those machines which support * both rpcbind and portmap, it will cause them to reply twice, and * also here it will get two responses ... inefficient and clumsy. */ struct broadif { int index; struct sockaddr_storage broadaddr; TAILQ_ENTRY(broadif) link; }; typedef TAILQ_HEAD(, broadif) broadlist_t; int __rpc_getbroadifs(int, int, int, broadlist_t *); void __rpc_freebroadifs(broadlist_t *); int __rpc_broadenable(int, int, struct broadif *); int __rpc_lowvers = 0; int __rpc_getbroadifs(int af, int proto, int socktype, broadlist_t *list) { int count = 0; struct broadif *bip; struct ifaddrs *ifap, *ifp; #ifdef INET6 struct sockaddr_in6 *sin6; #endif struct sockaddr_in *sin; struct addrinfo hints, *res; if (getifaddrs(&ifp) < 0) return 0; memset(&hints, 0, sizeof hints); hints.ai_family = af; hints.ai_protocol = proto; hints.ai_socktype = socktype; if (getaddrinfo(NULL, "sunrpc", &hints, &res) != 0) { freeifaddrs(ifp); return 0; } for (ifap = ifp; ifap != NULL; ifap = ifap->ifa_next) { if (ifap->ifa_addr->sa_family != af || !(ifap->ifa_flags & IFF_UP)) continue; bip = (struct broadif *)malloc(sizeof *bip); if (bip == NULL) break; bip->index = if_nametoindex(ifap->ifa_name); if ( #ifdef INET6 af != AF_INET6 && #endif (ifap->ifa_flags & IFF_BROADCAST) && ifap->ifa_broadaddr) { memcpy(&bip->broadaddr, ifap->ifa_broadaddr, (size_t)ifap->ifa_broadaddr->sa_len); sin = (struct sockaddr_in *)(void *)&bip->broadaddr; sin->sin_port = ((struct sockaddr_in *) (void *)res->ai_addr)->sin_port; } else #ifdef INET6 if (af == AF_INET6 && (ifap->ifa_flags & IFF_MULTICAST)) { sin6 = (struct sockaddr_in6 *)(void *)&bip->broadaddr; inet_pton(af, RPCB_MULTICAST_ADDR, &sin6->sin6_addr); sin6->sin6_family = af; sin6->sin6_len = sizeof *sin6; sin6->sin6_port = ((struct sockaddr_in6 *) (void *)res->ai_addr)->sin6_port; sin6->sin6_scope_id = bip->index; } else #endif { free(bip); continue; } TAILQ_INSERT_TAIL(list, bip, link); count++; } freeifaddrs(ifp); freeaddrinfo(res); return count; } void __rpc_freebroadifs(broadlist_t *list) { struct broadif *bip, *next; bip = TAILQ_FIRST(list); while (bip != NULL) { next = TAILQ_NEXT(bip, link); free(bip); bip = next; } } int /*ARGSUSED*/ __rpc_broadenable(int af, int s, struct broadif *bip) { int o = 1; #if 0 if (af == AF_INET6) { fprintf(stderr, "set v6 multicast if to %d\n", bip->index); if (_setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_IF, &bip->index, sizeof bip->index) < 0) return -1; } else #endif if (_setsockopt(s, SOL_SOCKET, SO_BROADCAST, &o, sizeof o) < 0) return -1; return 0; } /* * rpc_broadcast_exp() * * prog - program number * vers - version number * proc - procedure number * xargs - xdr routine for args * argsp - pointer to args * xresults - xdr routine for results * resultsp - pointer to results * eachresult - call with each result obtained * inittime - how long to wait initially * waittime - maximum time to wait * nettype - transport type */ enum clnt_stat rpc_broadcast_exp(rpcprog_t prog, rpcvers_t vers, rpcproc_t proc, xdrproc_t xargs, caddr_t argsp, xdrproc_t xresults, caddr_t resultsp, resultproc_t eachresult, int inittime, int waittime, const char *nettype) { enum clnt_stat stat = RPC_SUCCESS; /* Return status */ XDR xdr_stream; /* XDR stream */ XDR *xdrs = &xdr_stream; struct rpc_msg msg; /* RPC message */ struct timeval t; char *outbuf = NULL; /* Broadcast msg buffer */ char *inbuf = NULL; /* Reply buf */ int inlen; u_int maxbufsize = 0; AUTH *sys_auth = authunix_create_default(); u_int i; void *handle; char uaddress[1024]; /* A self imposed limit */ char *uaddrp = uaddress; int pmap_reply_flag; /* reply recvd from PORTMAP */ /* An array of all the suitable broadcast transports */ struct { int fd; /* File descriptor */ int af; int proto; struct netconfig *nconf; /* Netconfig structure */ u_int asize; /* Size of the addr buf */ u_int dsize; /* Size of the data buf */ struct sockaddr_storage raddr; /* Remote address */ broadlist_t nal; } fdlist[MAXBCAST]; struct pollfd pfd[MAXBCAST]; size_t fdlistno = 0; struct r_rpcb_rmtcallargs barg; /* Remote arguments */ struct r_rpcb_rmtcallres bres; /* Remote results */ size_t outlen; struct netconfig *nconf; int msec; int pollretval; int fds_found; #ifdef PORTMAP size_t outlen_pmap = 0; u_long port; /* Remote port number */ int pmap_flag = 0; /* UDP exists ? */ char *outbuf_pmap = NULL; struct rmtcallargs barg_pmap; /* Remote arguments */ struct rmtcallres bres_pmap; /* Remote results */ u_int udpbufsz = 0; #endif /* PORTMAP */ if (sys_auth == NULL) { return (RPC_SYSTEMERROR); } /* * initialization: create a fd, a broadcast address, and send the * request on the broadcast transport. * Listen on all of them and on replies, call the user supplied * function. */ if (nettype == NULL) nettype = "datagram_n"; if ((handle = __rpc_setconf(nettype)) == NULL) { AUTH_DESTROY(sys_auth); return (RPC_UNKNOWNPROTO); } while ((nconf = __rpc_getconf(handle)) != NULL) { int fd; struct __rpc_sockinfo si; if (nconf->nc_semantics != NC_TPI_CLTS) continue; if (fdlistno >= MAXBCAST) break; /* No more slots available */ if (!__rpc_nconf2sockinfo(nconf, &si)) continue; TAILQ_INIT(&fdlist[fdlistno].nal); if (__rpc_getbroadifs(si.si_af, si.si_proto, si.si_socktype, &fdlist[fdlistno].nal) == 0) continue; fd = _socket(si.si_af, si.si_socktype, si.si_proto); if (fd < 0) { stat = RPC_CANTSEND; continue; } fdlist[fdlistno].af = si.si_af; fdlist[fdlistno].proto = si.si_proto; fdlist[fdlistno].fd = fd; fdlist[fdlistno].nconf = nconf; fdlist[fdlistno].asize = __rpc_get_a_size(si.si_af); pfd[fdlistno].events = POLLIN | POLLPRI | POLLRDNORM | POLLRDBAND; pfd[fdlistno].fd = fdlist[fdlistno].fd = fd; fdlist[fdlistno].dsize = __rpc_get_t_size(si.si_af, si.si_proto, 0); if (maxbufsize <= fdlist[fdlistno].dsize) maxbufsize = fdlist[fdlistno].dsize; #ifdef PORTMAP if (si.si_af == AF_INET && si.si_proto == IPPROTO_UDP) { udpbufsz = fdlist[fdlistno].dsize; if ((outbuf_pmap = malloc(udpbufsz)) == NULL) { _close(fd); stat = RPC_SYSTEMERROR; goto done_broad; } pmap_flag = 1; } #endif /* PORTMAP */ fdlistno++; } if (fdlistno == 0) { if (stat == RPC_SUCCESS) stat = RPC_UNKNOWNPROTO; goto done_broad; } if (maxbufsize == 0) { if (stat == RPC_SUCCESS) stat = RPC_CANTSEND; goto done_broad; } inbuf = malloc(maxbufsize); outbuf = malloc(maxbufsize); if ((inbuf == NULL) || (outbuf == NULL)) { stat = RPC_SYSTEMERROR; goto done_broad; } /* Serialize all the arguments which have to be sent */ (void) gettimeofday(&t, NULL); msg.rm_xid = __RPC_GETXID(&t); msg.rm_direction = CALL; msg.rm_call.cb_rpcvers = RPC_MSG_VERSION; msg.rm_call.cb_prog = RPCBPROG; msg.rm_call.cb_vers = RPCBVERS; msg.rm_call.cb_proc = RPCBPROC_CALLIT; barg.prog = prog; barg.vers = vers; barg.proc = proc; barg.args.args_val = argsp; barg.xdr_args = xargs; bres.addr = uaddrp; bres.results.results_val = resultsp; bres.xdr_res = xresults; msg.rm_call.cb_cred = sys_auth->ah_cred; msg.rm_call.cb_verf = sys_auth->ah_verf; xdrmem_create(xdrs, outbuf, maxbufsize, XDR_ENCODE); if ((!xdr_callmsg(xdrs, &msg)) || (!xdr_rpcb_rmtcallargs(xdrs, (struct rpcb_rmtcallargs *)(void *)&barg))) { stat = RPC_CANTENCODEARGS; goto done_broad; } outlen = xdr_getpos(xdrs); xdr_destroy(xdrs); #ifdef PORTMAP /* Prepare the packet for version 2 PORTMAP */ if (pmap_flag) { msg.rm_xid++; /* One way to distinguish */ msg.rm_call.cb_prog = PMAPPROG; msg.rm_call.cb_vers = PMAPVERS; msg.rm_call.cb_proc = PMAPPROC_CALLIT; barg_pmap.prog = prog; barg_pmap.vers = vers; barg_pmap.proc = proc; barg_pmap.args_ptr = argsp; barg_pmap.xdr_args = xargs; bres_pmap.port_ptr = &port; bres_pmap.xdr_results = xresults; bres_pmap.results_ptr = resultsp; xdrmem_create(xdrs, outbuf_pmap, udpbufsz, XDR_ENCODE); if ((! xdr_callmsg(xdrs, &msg)) || (! xdr_rmtcall_args(xdrs, &barg_pmap))) { stat = RPC_CANTENCODEARGS; goto done_broad; } outlen_pmap = xdr_getpos(xdrs); xdr_destroy(xdrs); } #endif /* PORTMAP */ /* * Basic loop: broadcast the packets to transports which * support data packets of size such that one can encode * all the arguments. * Wait a while for response(s). * The response timeout grows larger per iteration. */ for (msec = inittime; msec <= waittime; msec += msec) { struct broadif *bip; /* Broadcast all the packets now */ for (i = 0; i < fdlistno; i++) { if (fdlist[i].dsize < outlen) { stat = RPC_CANTSEND; continue; } for (bip = TAILQ_FIRST(&fdlist[i].nal); bip != NULL; bip = TAILQ_NEXT(bip, link)) { void *addr; addr = &bip->broadaddr; __rpc_broadenable(fdlist[i].af, fdlist[i].fd, bip); /* * Only use version 3 if lowvers is not set */ if (!__rpc_lowvers) if (_sendto(fdlist[i].fd, outbuf, outlen, 0, (struct sockaddr*)addr, (size_t)fdlist[i].asize) != outlen) { #ifdef RPC_DEBUG perror("sendto"); #endif warnx("clnt_bcast: cannot send " "broadcast packet"); stat = RPC_CANTSEND; continue; - }; + } #ifdef RPC_DEBUG if (!__rpc_lowvers) fprintf(stderr, "Broadcast packet sent " "for %s\n", fdlist[i].nconf->nc_netid); #endif #ifdef PORTMAP /* * Send the version 2 packet also * for UDP/IP */ if (pmap_flag && fdlist[i].proto == IPPROTO_UDP) { if (_sendto(fdlist[i].fd, outbuf_pmap, outlen_pmap, 0, addr, (size_t)fdlist[i].asize) != outlen_pmap) { warnx("clnt_bcast: " "Cannot send broadcast packet"); stat = RPC_CANTSEND; continue; } } #ifdef RPC_DEBUG fprintf(stderr, "PMAP Broadcast packet " "sent for %s\n", fdlist[i].nconf->nc_netid); #endif #endif /* PORTMAP */ } /* End for sending all packets on this transport */ } /* End for sending on all transports */ if (eachresult == NULL) { stat = RPC_SUCCESS; goto done_broad; } /* * Get all the replies from these broadcast requests */ recv_again: switch (pollretval = _poll(pfd, fdlistno, msec)) { case 0: /* timed out */ stat = RPC_TIMEDOUT; continue; case -1: /* some kind of error - we ignore it */ goto recv_again; } /* end of poll results switch */ for (i = fds_found = 0; i < fdlistno && fds_found < pollretval; i++) { bool_t done = FALSE; if (pfd[i].revents == 0) continue; else if (pfd[i].revents & POLLNVAL) { /* * Something bad has happened to this descri- * ptor. We can cause _poll() to ignore * it simply by using a negative fd. We do that * rather than compacting the pfd[] and fdlist[] * arrays. */ pfd[i].fd = -1; fds_found++; continue; } else fds_found++; #ifdef RPC_DEBUG fprintf(stderr, "response for %s\n", fdlist[i].nconf->nc_netid); #endif try_again: inlen = _recvfrom(fdlist[i].fd, inbuf, fdlist[i].dsize, 0, (struct sockaddr *)(void *)&fdlist[i].raddr, &fdlist[i].asize); if (inlen < 0) { if (errno == EINTR) goto try_again; warnx("clnt_bcast: Cannot receive reply to " "broadcast"); stat = RPC_CANTRECV; continue; } if (inlen < sizeof (u_int32_t)) continue; /* Drop that and go ahead */ /* * see if reply transaction id matches sent id. * If so, decode the results. If return id is xid + 1 * it was a PORTMAP reply */ if (*((u_int32_t *)(void *)(inbuf)) == *((u_int32_t *)(void *)(outbuf))) { pmap_reply_flag = 0; msg.acpted_rply.ar_verf = _null_auth; msg.acpted_rply.ar_results.where = (caddr_t)(void *)&bres; msg.acpted_rply.ar_results.proc = (xdrproc_t)xdr_rpcb_rmtcallres; #ifdef PORTMAP } else if (pmap_flag && *((u_int32_t *)(void *)(inbuf)) == *((u_int32_t *)(void *)(outbuf_pmap))) { pmap_reply_flag = 1; msg.acpted_rply.ar_verf = _null_auth; msg.acpted_rply.ar_results.where = (caddr_t)(void *)&bres_pmap; msg.acpted_rply.ar_results.proc = (xdrproc_t)xdr_rmtcallres; #endif /* PORTMAP */ } else continue; xdrmem_create(xdrs, inbuf, (u_int)inlen, XDR_DECODE); if (xdr_replymsg(xdrs, &msg)) { if ((msg.rm_reply.rp_stat == MSG_ACCEPTED) && (msg.acpted_rply.ar_stat == SUCCESS)) { struct netbuf taddr, *np; struct sockaddr_in *sin; #ifdef PORTMAP if (pmap_flag && pmap_reply_flag) { sin = (struct sockaddr_in *) (void *)&fdlist[i].raddr; sin->sin_port = htons((u_short)port); taddr.len = taddr.maxlen = fdlist[i].raddr.ss_len; taddr.buf = &fdlist[i].raddr; done = (*eachresult)(resultsp, &taddr, fdlist[i].nconf); } else { #endif /* PORTMAP */ #ifdef RPC_DEBUG fprintf(stderr, "uaddr %s\n", uaddrp); #endif np = uaddr2taddr( fdlist[i].nconf, uaddrp); done = (*eachresult)(resultsp, np, fdlist[i].nconf); free(np); #ifdef PORTMAP } #endif /* PORTMAP */ } /* otherwise, we just ignore the errors ... */ } /* else some kind of deserialization problem ... */ xdrs->x_op = XDR_FREE; msg.acpted_rply.ar_results.proc = (xdrproc_t) xdr_void; (void) xdr_replymsg(xdrs, &msg); (void) (*xresults)(xdrs, resultsp); XDR_DESTROY(xdrs); if (done) { stat = RPC_SUCCESS; goto done_broad; } else { goto recv_again; } } /* The recv for loop */ } /* The giant for loop */ done_broad: free(inbuf); free(outbuf); #ifdef PORTMAP free(outbuf_pmap); #endif /* PORTMAP */ for (i = 0; i < fdlistno; i++) { (void)_close(fdlist[i].fd); __rpc_freebroadifs(&fdlist[i].nal); } AUTH_DESTROY(sys_auth); (void) __rpc_endconf(handle); return (stat); } /* * rpc_broadcast() * * prog - program number * vers - version number * proc - procedure number * xargs - xdr routine for args * argsp - pointer to args * xresults - xdr routine for results * resultsp - pointer to results * eachresult - call with each result obtained * nettype - transport type */ enum clnt_stat rpc_broadcast(rpcprog_t prog, rpcvers_t vers, rpcproc_t proc, xdrproc_t xargs, caddr_t argsp, xdrproc_t xresults, caddr_t resultsp, resultproc_t eachresult, const char *nettype) { enum clnt_stat dummy; dummy = rpc_broadcast_exp(prog, vers, proc, xargs, argsp, xresults, resultsp, eachresult, INITTIME, WAITTIME, nettype); return (dummy); } diff --git a/lib/libc/rpc/clnt_generic.c b/lib/libc/rpc/clnt_generic.c index 0c8a425750a4..0dea81d52eb5 100644 --- a/lib/libc/rpc/clnt_generic.c +++ b/lib/libc/rpc/clnt_generic.c @@ -1,448 +1,448 @@ /* $NetBSD: clnt_generic.c,v 1.18 2000/07/06 03:10:34 christos Exp $ */ /*- * Copyright (c) 2010, Oracle America, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * - Neither the name of the "Oracle America, Inc." nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* #ident "@(#)clnt_generic.c 1.40 99/04/21 SMI" */ #if defined(LIBC_SCCS) && !defined(lint) static char *sccsid2 = "from: @(#)clnt_generic.c 1.4 87/08/11 (C) 1987 SMI"; static char *sccsid = "from: @(#)clnt_generic.c 2.2 88/08/01 4.0 RPCSRC"; #endif #include __FBSDID("$FreeBSD$"); /* * Copyright (c) 1986-1996,1998 by Sun Microsystems, Inc. * All rights reserved. */ #include "namespace.h" #include "reentrant.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "un-namespace.h" #include "rpc_com.h" extern bool_t __rpc_is_local_host(const char *); int __rpc_raise_fd(int); #ifndef NETIDLEN #define NETIDLEN 32 #endif /* * Generic client creation with version checking the value of * vers_out is set to the highest server supported value * vers_low <= vers_out <= vers_high AND an error results * if this can not be done. * * It calls clnt_create_vers_timed() with a NULL value for the timeout * pointer, which indicates that the default timeout should be used. */ CLIENT * clnt_create_vers(const char *hostname, rpcprog_t prog, rpcvers_t *vers_out, rpcvers_t vers_low, rpcvers_t vers_high, const char *nettype) { return (clnt_create_vers_timed(hostname, prog, vers_out, vers_low, vers_high, nettype, NULL)); } /* * This the routine has the same definition as clnt_create_vers(), * except it takes an additional timeout parameter - a pointer to * a timeval structure. A NULL value for the pointer indicates * that the default timeout value should be used. */ CLIENT * clnt_create_vers_timed(const char *hostname, rpcprog_t prog, rpcvers_t *vers_out, rpcvers_t vers_low, rpcvers_t vers_high, const char *nettype, const struct timeval *tp) { CLIENT *clnt; struct timeval to; enum clnt_stat rpc_stat; struct rpc_err rpcerr; clnt = clnt_create_timed(hostname, prog, vers_high, nettype, tp); if (clnt == NULL) { return (NULL); } to.tv_sec = 10; to.tv_usec = 0; rpc_stat = clnt_call(clnt, NULLPROC, (xdrproc_t)xdr_void, (char *)NULL, (xdrproc_t)xdr_void, (char *)NULL, to); if (rpc_stat == RPC_SUCCESS) { *vers_out = vers_high; return (clnt); } while (rpc_stat == RPC_PROGVERSMISMATCH && vers_high > vers_low) { unsigned int minvers, maxvers; clnt_geterr(clnt, &rpcerr); minvers = rpcerr.re_vers.low; maxvers = rpcerr.re_vers.high; if (maxvers < vers_high) vers_high = maxvers; else vers_high--; if (minvers > vers_low) vers_low = minvers; if (vers_low > vers_high) { goto error; } CLNT_CONTROL(clnt, CLSET_VERS, (char *)&vers_high); rpc_stat = clnt_call(clnt, NULLPROC, (xdrproc_t)xdr_void, (char *)NULL, (xdrproc_t)xdr_void, (char *)NULL, to); if (rpc_stat == RPC_SUCCESS) { *vers_out = vers_high; return (clnt); } } clnt_geterr(clnt, &rpcerr); error: rpc_createerr.cf_stat = rpc_stat; rpc_createerr.cf_error = rpcerr; clnt_destroy(clnt); return (NULL); } /* * Top level client creation routine. * Generic client creation: takes (servers name, program-number, nettype) and * returns client handle. Default options are set, which the user can * change using the rpc equivalent of _ioctl()'s. * * It tries for all the netids in that particular class of netid until * it succeeds. * XXX The error message in the case of failure will be the one * pertaining to the last create error. * * It calls clnt_create_timed() with the default timeout. */ CLIENT * clnt_create(const char *hostname, rpcprog_t prog, rpcvers_t vers, const char *nettype) { return (clnt_create_timed(hostname, prog, vers, nettype, NULL)); } /* * This the routine has the same definition as clnt_create(), * except it takes an additional timeout parameter - a pointer to * a timeval structure. A NULL value for the pointer indicates * that the default timeout value should be used. * * This function calls clnt_tp_create_timed(). */ CLIENT * clnt_create_timed(const char *hostname, rpcprog_t prog, rpcvers_t vers, const char *netclass, const struct timeval *tp) { struct netconfig *nconf; CLIENT *clnt = NULL; void *handle; enum clnt_stat save_cf_stat = RPC_SUCCESS; struct rpc_err save_cf_error; char nettype_array[NETIDLEN]; char *nettype = &nettype_array[0]; if (netclass == NULL) nettype = NULL; else { size_t len = strlen(netclass); if (len >= sizeof (nettype_array)) { rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; return (NULL); } strcpy(nettype, netclass); } if ((handle = __rpc_setconf((char *)nettype)) == NULL) { rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; return (NULL); } rpc_createerr.cf_stat = RPC_SUCCESS; while (clnt == NULL) { if ((nconf = __rpc_getconf(handle)) == NULL) { if (rpc_createerr.cf_stat == RPC_SUCCESS) rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; break; } #ifdef CLNT_DEBUG printf("trying netid %s\n", nconf->nc_netid); #endif clnt = clnt_tp_create_timed(hostname, prog, vers, nconf, tp); if (clnt) break; else /* * Since we didn't get a name-to-address * translation failure here, we remember * this particular error. The object of * this is to enable us to return to the * caller a more-specific error than the * unhelpful ``Name to address translation * failed'' which might well occur if we * merely returned the last error (because * the local loopbacks are typically the * last ones in /etc/netconfig and the most * likely to be unable to translate a host * name). We also check for a more * meaningful error than ``unknown host * name'' for the same reasons. */ if (rpc_createerr.cf_stat != RPC_N2AXLATEFAILURE && rpc_createerr.cf_stat != RPC_UNKNOWNHOST) { save_cf_stat = rpc_createerr.cf_stat; save_cf_error = rpc_createerr.cf_error; } } /* * Attempt to return an error more specific than ``Name to address * translation failed'' or ``unknown host name'' */ if ((rpc_createerr.cf_stat == RPC_N2AXLATEFAILURE || rpc_createerr.cf_stat == RPC_UNKNOWNHOST) && (save_cf_stat != RPC_SUCCESS)) { rpc_createerr.cf_stat = save_cf_stat; rpc_createerr.cf_error = save_cf_error; } __rpc_endconf(handle); return (clnt); } /* * Generic client creation: takes (servers name, program-number, netconf) and * returns client handle. Default options are set, which the user can * change using the rpc equivalent of _ioctl()'s : clnt_control() * It finds out the server address from rpcbind and calls clnt_tli_create(). * * It calls clnt_tp_create_timed() with the default timeout. */ CLIENT * clnt_tp_create(const char *hostname, rpcprog_t prog, rpcvers_t vers, const struct netconfig *nconf) { return (clnt_tp_create_timed(hostname, prog, vers, nconf, NULL)); } /* * This has the same definition as clnt_tp_create(), except it * takes an additional parameter - a pointer to a timeval structure. * A NULL value for the timeout pointer indicates that the default * value for the timeout should be used. */ CLIENT * clnt_tp_create_timed(const char *hostname, rpcprog_t prog, rpcvers_t vers, const struct netconfig *nconf, const struct timeval *tp) { struct netbuf *svcaddr; /* servers address */ CLIENT *cl = NULL; /* client handle */ if (nconf == NULL) { rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; return (NULL); } /* * Get the address of the server */ if ((svcaddr = __rpcb_findaddr_timed(prog, vers, (struct netconfig *)nconf, (char *)hostname, &cl, (struct timeval *)tp)) == NULL) { /* appropriate error number is set by rpcbind libraries */ return (NULL); } if (cl == NULL) { cl = clnt_tli_create(RPC_ANYFD, nconf, svcaddr, prog, vers, 0, 0); } else { /* Reuse the CLIENT handle and change the appropriate fields */ if (CLNT_CONTROL(cl, CLSET_SVC_ADDR, (void *)svcaddr) == TRUE) { if (cl->cl_netid == NULL) cl->cl_netid = strdup(nconf->nc_netid); if (cl->cl_tp == NULL) cl->cl_tp = strdup(nconf->nc_device); (void) CLNT_CONTROL(cl, CLSET_PROG, (void *)&prog); (void) CLNT_CONTROL(cl, CLSET_VERS, (void *)&vers); } else { CLNT_DESTROY(cl); cl = clnt_tli_create(RPC_ANYFD, nconf, svcaddr, prog, vers, 0, 0); } } free(svcaddr->buf); free(svcaddr); return (cl); } /* * Generic client creation: returns client handle. * Default options are set, which the user can * change using the rpc equivalent of _ioctl()'s : clnt_control(). * If fd is RPC_ANYFD, it will be opened using nconf. * It will be bound if not so. * If sizes are 0; appropriate defaults will be chosen. */ CLIENT * clnt_tli_create(int fd, const struct netconfig *nconf, struct netbuf *svcaddr, rpcprog_t prog, rpcvers_t vers, uint sendsz, uint recvsz) { CLIENT *cl; /* client handle */ bool_t madefd = FALSE; /* whether fd opened here */ long servtype; int one = 1; struct __rpc_sockinfo si; extern int __rpc_minfd; if (fd == RPC_ANYFD) { if (nconf == NULL) { rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; return (NULL); } fd = __rpc_nconf2fd(nconf); if (fd == -1) goto err; if (fd < __rpc_minfd) fd = __rpc_raise_fd(fd); madefd = TRUE; servtype = nconf->nc_semantics; if (!__rpc_fd2sockinfo(fd, &si)) goto err; bindresvport(fd, NULL); } else { if (!__rpc_fd2sockinfo(fd, &si)) goto err; servtype = __rpc_socktype2seman(si.si_socktype); if (servtype == -1) { rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; return (NULL); } } if (si.si_af != ((struct sockaddr *)svcaddr->buf)->sa_family) { rpc_createerr.cf_stat = RPC_UNKNOWNHOST; /* XXX */ goto err1; } switch (servtype) { case NC_TPI_COTS: cl = clnt_vc_create(fd, svcaddr, prog, vers, sendsz, recvsz); break; case NC_TPI_COTS_ORD: if (nconf && ((strcmp(nconf->nc_protofmly, "inet") == 0))) { _setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &one, sizeof (one)); } cl = clnt_vc_create(fd, svcaddr, prog, vers, sendsz, recvsz); break; case NC_TPI_CLTS: cl = clnt_dg_create(fd, svcaddr, prog, vers, sendsz, recvsz); break; default: goto err; } if (cl == NULL) goto err1; /* borrow errors from clnt_dg/vc creates */ if (nconf) { cl->cl_netid = strdup(nconf->nc_netid); cl->cl_tp = strdup(nconf->nc_device); } else { cl->cl_netid = ""; cl->cl_tp = ""; } if (madefd) { (void) CLNT_CONTROL(cl, CLSET_FD_CLOSE, NULL); /* (void) CLNT_CONTROL(cl, CLSET_POP_TIMOD, NULL); */ - }; + } return (cl); err: rpc_createerr.cf_stat = RPC_SYSTEMERROR; rpc_createerr.cf_error.re_errno = errno; err1: if (madefd) (void)_close(fd); return (NULL); } /* * To avoid conflicts with the "magic" file descriptors (0, 1, and 2), * we try to not use them. The __rpc_raise_fd() routine will dup * a descriptor to a higher value. If we fail to do it, we continue * to use the old one (and hope for the best). */ int __rpc_minfd = 3; int __rpc_raise_fd(int fd) { int nfd; if (fd >= __rpc_minfd) return (fd); if ((nfd = _fcntl(fd, F_DUPFD, __rpc_minfd)) == -1) return (fd); if (_fsync(nfd) == -1) { _close(nfd); return (fd); } if (_close(fd) == -1) { /* this is okay, we will syslog an error, then use the new fd */ (void) syslog(LOG_ERR, "could not close() fd %d; mem & fd leak", fd); } return (nfd); }