454 lines
11 KiB
C
454 lines
11 KiB
C
/* $NetBSD: rpc_soc.c,v 1.9 2002/11/08 00:13:08 fvdl Exp $ */
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/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*/
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/* #ident "@(#)rpc_soc.c 1.17 94/04/24 SMI" */
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/*
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* Copyright (c) 1986-1991 by Sun Microsystems Inc.
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* In addition, portions of such source code were derived from Berkeley
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* 4.3 BSD under license from the Regents of the University of
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* California.
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*/
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#if 0
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#if !defined(lint) && defined(SCCSIDS)
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static char sccsid[] = "@(#)rpc_soc.c 1.41 89/05/02 Copyr 1988 Sun Micro";
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#endif
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#endif
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#ifdef PORTMAP
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/*
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* rpc_soc.c
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*
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* The backward compatibility routines for the earlier implementation
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* of RPC, where the only transports supported were tcp/ip and udp/ip.
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* Based on berkeley socket abstraction, now implemented on the top
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* of TLI/Streams
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*/
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#include "namespace.h"
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#include "reentrant.h"
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <stdio.h>
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#include <rpc/rpc.h>
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#include <rpc/pmap_clnt.h>
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#include <rpc/pmap_prot.h>
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#include <rpc/nettype.h>
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#include <netinet/in.h>
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#include <assert.h>
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#include <errno.h>
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#include <netdb.h>
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#include <stdlib.h>
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#include <string.h>
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#include <syslog.h>
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#include <unistd.h>
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#include "rpc_internal.h"
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#ifdef __weak_alias
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__weak_alias(clntudp_bufcreate,_clntudp_bufcreate)
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__weak_alias(clntudp_create,_clntudp_create)
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__weak_alias(clnttcp_create,_clnttcp_create)
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__weak_alias(clntraw_create,_clntraw_create)
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__weak_alias(get_myaddress,_get_myaddress)
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__weak_alias(svcfd_create,_svcfd_create)
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__weak_alias(svcudp_bufcreate,_svcudp_bufcreate)
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__weak_alias(svcudp_create,_svcudp_create)
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__weak_alias(svctcp_create,_svctcp_create)
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__weak_alias(svcraw_create,_svcraw_create)
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__weak_alias(callrpc,_callrpc)
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__weak_alias(registerrpc,_registerrpc)
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__weak_alias(clnt_broadcast,_clnt_broadcast)
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#endif
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#ifdef __REENT
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extern mutex_t rpcsoc_lock;
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#endif
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static CLIENT *clnt_com_create __P((struct sockaddr_in *, rpcprog_t, rpcvers_t,
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int *, u_int, u_int, char *));
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static SVCXPRT *svc_com_create __P((int, u_int, u_int, char *));
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static bool_t rpc_wrap_bcast __P((char *, struct netbuf *, struct netconfig *));
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/*
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* A common clnt create routine
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*/
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static CLIENT *
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clnt_com_create(raddr, prog, vers, sockp, sendsz, recvsz, tp)
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struct sockaddr_in *raddr;
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rpcprog_t prog;
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rpcvers_t vers;
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int *sockp;
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u_int sendsz;
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u_int recvsz;
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char *tp;
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{
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CLIENT *cl;
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int madefd = FALSE;
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int fd;
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struct netconfig *nconf;
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struct netbuf bindaddr;
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_DIAGASSERT(raddr != NULL);
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_DIAGASSERT(sockp != NULL);
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_DIAGASSERT(tp != NULL);
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fd = *sockp;
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mutex_lock(&rpcsoc_lock);
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if ((nconf = __rpc_getconfip(tp)) == NULL) {
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rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
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mutex_unlock(&rpcsoc_lock);
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return (NULL);
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}
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if (fd == RPC_ANYSOCK) {
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fd = __rpc_nconf2fd(nconf);
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if (fd == -1)
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goto syserror;
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madefd = TRUE;
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}
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if (raddr->sin_port == 0) {
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u_int proto;
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u_short sport;
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mutex_unlock(&rpcsoc_lock); /* pmap_getport is recursive */
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proto = strcmp(tp, "udp") == 0 ? IPPROTO_UDP : IPPROTO_TCP;
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sport = pmap_getport(raddr, (u_long)prog, (u_long)vers,
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proto);
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if (sport == 0) {
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goto err;
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}
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raddr->sin_port = htons(sport);
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mutex_lock(&rpcsoc_lock); /* pmap_getport is recursive */
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}
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/* Transform sockaddr_in to netbuf */
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bindaddr.maxlen = bindaddr.len = sizeof (struct sockaddr_in);
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bindaddr.buf = raddr;
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bindresvport(fd, NULL);
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cl = clnt_tli_create(fd, nconf, &bindaddr, prog, vers,
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sendsz, recvsz);
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if (cl) {
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if (madefd == TRUE) {
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/*
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* The fd should be closed while destroying the handle.
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*/
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(void) CLNT_CONTROL(cl, CLSET_FD_CLOSE, NULL);
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*sockp = fd;
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}
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(void) freenetconfigent(nconf);
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mutex_unlock(&rpcsoc_lock);
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return (cl);
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}
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goto err;
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syserror:
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rpc_createerr.cf_stat = RPC_SYSTEMERROR;
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rpc_createerr.cf_error.re_errno = errno;
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err: if (madefd == TRUE)
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(void) close(fd);
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(void) freenetconfigent(nconf);
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mutex_unlock(&rpcsoc_lock);
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return (NULL);
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}
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CLIENT *
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clntudp_bufcreate(raddr, prog, vers, wait, sockp, sendsz, recvsz)
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struct sockaddr_in *raddr;
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u_long prog;
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u_long vers;
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struct timeval wait;
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int *sockp;
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u_int sendsz;
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u_int recvsz;
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{
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CLIENT *cl;
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_DIAGASSERT(raddr != NULL);
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_DIAGASSERT(sockp != NULL);
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cl = clnt_com_create(raddr, (rpcprog_t)prog, (rpcvers_t)vers, sockp,
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sendsz, recvsz, "udp");
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if (cl == NULL) {
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return (NULL);
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}
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(void) CLNT_CONTROL(cl, CLSET_RETRY_TIMEOUT, (char *)(void *)&wait);
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return (cl);
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}
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CLIENT *
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clntudp_create(raddr, program, version, wait, sockp)
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struct sockaddr_in *raddr;
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u_long program;
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u_long version;
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struct timeval wait;
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int *sockp;
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{
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return clntudp_bufcreate(raddr, program, version, wait, sockp,
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UDPMSGSIZE, UDPMSGSIZE);
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}
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CLIENT *
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clnttcp_create(raddr, prog, vers, sockp, sendsz, recvsz)
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struct sockaddr_in *raddr;
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u_long prog;
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u_long vers;
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int *sockp;
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u_int sendsz;
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u_int recvsz;
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{
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return clnt_com_create(raddr, (rpcprog_t)prog, (rpcvers_t)vers, sockp,
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sendsz, recvsz, "tcp");
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}
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CLIENT *
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clntraw_create(prog, vers)
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u_long prog;
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u_long vers;
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{
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return clnt_raw_create((rpcprog_t)prog, (rpcvers_t)vers);
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}
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/*
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* A common server create routine
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*/
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static SVCXPRT *
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svc_com_create(fd, sendsize, recvsize, netid)
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int fd;
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u_int sendsize;
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u_int recvsize;
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char *netid;
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{
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struct netconfig *nconf;
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SVCXPRT *svc;
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int madefd = FALSE;
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int port;
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struct sockaddr_in sccsin;
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_DIAGASSERT(netid != NULL);
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if ((nconf = __rpc_getconfip(netid)) == NULL) {
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(void) syslog(LOG_ERR, "Could not get %s transport", netid);
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return (NULL);
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}
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if (fd == RPC_ANYSOCK) {
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fd = __rpc_nconf2fd(nconf);
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if (fd == -1) {
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(void) freenetconfigent(nconf);
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(void) syslog(LOG_ERR,
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"svc%s_create: could not open connection", netid);
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return (NULL);
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}
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madefd = TRUE;
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}
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memset(&sccsin, 0, sizeof sccsin);
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sccsin.sin_family = AF_INET;
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bindresvport(fd, &sccsin);
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listen(fd, SOMAXCONN);
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svc = svc_tli_create(fd, nconf, NULL, sendsize, recvsize);
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(void) freenetconfigent(nconf);
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if (svc == NULL) {
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if (madefd)
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(void) close(fd);
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return (NULL);
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}
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port = (((struct sockaddr_in *)svc->xp_ltaddr.buf)->sin_port);
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svc->xp_port = ntohs(port);
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return (svc);
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}
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SVCXPRT *
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svctcp_create(fd, sendsize, recvsize)
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int fd;
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u_int sendsize;
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u_int recvsize;
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{
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return svc_com_create(fd, sendsize, recvsize, "tcp");
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}
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SVCXPRT *
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svcudp_bufcreate(fd, sendsz, recvsz)
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int fd;
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u_int sendsz, recvsz;
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{
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return svc_com_create(fd, sendsz, recvsz, "udp");
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}
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SVCXPRT *
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svcfd_create(fd, sendsize, recvsize)
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int fd;
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u_int sendsize;
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u_int recvsize;
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{
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return svc_fd_create(fd, sendsize, recvsize);
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}
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SVCXPRT *
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svcudp_create(fd)
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int fd;
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{
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return svc_com_create(fd, UDPMSGSIZE, UDPMSGSIZE, "udp");
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}
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SVCXPRT *
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svcraw_create()
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{
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return svc_raw_create();
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}
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int
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get_myaddress(addr)
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struct sockaddr_in *addr;
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{
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_DIAGASSERT(addr != NULL);
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memset((void *) addr, 0, sizeof(*addr));
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addr->sin_family = AF_INET;
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addr->sin_port = htons(PMAPPORT);
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addr->sin_addr.s_addr = htonl(INADDR_LOOPBACK);
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return (0);
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}
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/*
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* For connectionless "udp" transport. Obsoleted by rpc_call().
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*/
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int
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callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out)
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char *host;
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int prognum, versnum, procnum;
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xdrproc_t inproc, outproc;
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char *in, *out;
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{
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return (int)rpc_call(host, (rpcprog_t)prognum, (rpcvers_t)versnum,
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(rpcproc_t)procnum, inproc, in, outproc, out, "udp");
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}
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/*
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* For connectionless kind of transport. Obsoleted by rpc_reg()
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*/
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int
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registerrpc(prognum, versnum, procnum, progname, inproc, outproc)
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int prognum, versnum, procnum;
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char *(*progname) __P((char [UDPMSGSIZE]));
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xdrproc_t inproc, outproc;
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{
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return rpc_reg((rpcprog_t)prognum, (rpcvers_t)versnum,
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(rpcproc_t)procnum, progname, inproc, outproc, "udp");
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}
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/*
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* All the following clnt_broadcast stuff is convulated; it supports
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* the earlier calling style of the callback function
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*/
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#ifdef __REENT
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static thread_key_t clnt_broadcast_key;
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#endif
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static resultproc_t clnt_broadcast_result_main;
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/*
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* Need to translate the netbuf address into sockaddr_in address.
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* Dont care about netid here.
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*/
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/* ARGSUSED */
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static bool_t
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rpc_wrap_bcast(resultp, addr, nconf)
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char *resultp; /* results of the call */
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struct netbuf *addr; /* address of the guy who responded */
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struct netconfig *nconf; /* Netconf of the transport */
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{
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resultproc_t clnt_broadcast_result;
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_DIAGASSERT(resultp != NULL);
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_DIAGASSERT(addr != NULL);
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_DIAGASSERT(nconf != NULL);
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if (strcmp(nconf->nc_netid, "udp"))
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return (FALSE);
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#ifdef __REENT
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if (_thr_main())
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clnt_broadcast_result = clnt_broadcast_result_main;
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else
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thr_getspecific(clnt_broadcast_key,
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(void **) &clnt_broadcast_result);
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#else
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clnt_broadcast_result = clnt_broadcast_result_main;
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#endif
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return (*clnt_broadcast_result)(resultp,
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(struct sockaddr_in *)addr->buf);
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}
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/*
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* Broadcasts on UDP transport. Obsoleted by rpc_broadcast().
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*/
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enum clnt_stat
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clnt_broadcast(prog, vers, proc, xargs, argsp, xresults, resultsp, eachresult)
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u_long prog; /* program number */
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u_long vers; /* version number */
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u_long proc; /* procedure number */
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xdrproc_t xargs; /* xdr routine for args */
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caddr_t argsp; /* pointer to args */
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xdrproc_t xresults; /* xdr routine for results */
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caddr_t resultsp; /* pointer to results */
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resultproc_t eachresult; /* call with each result obtained */
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{
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#ifdef __REENT
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extern mutex_t tsd_lock;
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#endif
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#ifdef __REENT
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if (_thr_main())
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clnt_broadcast_result_main = eachresult;
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else {
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if (clnt_broadcast_key == 0) {
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mutex_lock(&tsd_lock);
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if (clnt_broadcast_key == 0)
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thr_keycreate(&clnt_broadcast_key, free);
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mutex_unlock(&tsd_lock);
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}
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thr_setspecific(clnt_broadcast_key, (void *) eachresult);
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}
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#else
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clnt_broadcast_result_main = eachresult;
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#endif
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return rpc_broadcast((rpcprog_t)prog, (rpcvers_t)vers,
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(rpcproc_t)proc, xargs, argsp, xresults, resultsp,
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(resultproc_t) rpc_wrap_bcast, "udp");
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}
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#endif /* PORTMAP */
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