0f2cb9b020
ansification and constification:
s{\s+__P\((\(.*?\))\)}{$1}g;
s{\(\s+}{\(}g;
s{\s+\)}{\)}g;
s{\s+,}{,}g;
s{(\s+)(for|if|switch|while)\(}{$1$2 \(}g;
s{return ([^\(].*?);}{return ($1);}g;
s{([\w\)])([!=+/\*-]?=)([\w\(+-])}{$1 $2 $3}g;
s{\s+$}{\n};g
Also add $FreeBSD$ where needed.
MFC after: 1 week
332 lines
9.6 KiB
C
332 lines
9.6 KiB
C
/*
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* Copyright (c) 1996, 1997
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* Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Bill Paul.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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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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#ifndef lint
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#if 0
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static char *sccsid = "@(#)from: clnt_udp.c 1.39 87/08/11 Copyr 1984 Sun Micro";
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static char *sccsid = "@(#)from: clnt_udp.c 2.2 88/08/01 4.0 RPCSRC";
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#endif
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static const char rcsid[] =
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"$FreeBSD$";
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#endif
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/*
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* clnt_udp.c, Implements a UDP/IP based, client side RPC.
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*
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* Copyright (C) 1984, Sun Microsystems, Inc.
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*/
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#include <errno.h>
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#include <netdb.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <pthread.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 <rpcsvc/yp.h>
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#include <sys/types.h>
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#include <sys/poll.h>
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#include <sys/socket.h>
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#include <sys/signal.h>
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#include <sys/ioctl.h>
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#include <net/if.h>
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#include "yp_ping.h"
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struct cu_data {
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int cu_fd; /* connections fd */
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bool_t cu_closeit; /* opened by library */
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struct sockaddr_storage cu_raddr; /* remote address */
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int cu_rlen;
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struct timeval cu_wait; /* retransmit interval */
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struct timeval cu_total; /* total time for the call */
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struct rpc_err cu_error;
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XDR cu_outxdrs;
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u_int cu_xdrpos;
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u_int cu_sendsz; /* send size */
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char *cu_outbuf;
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u_int cu_recvsz; /* recv size */
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struct pollfd pfdp;
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int cu_async;
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char cu_inbuf[1];
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};
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/*
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* pmap_getport.c
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* Client interface to pmap rpc service.
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*
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* Copyright (C) 1984, Sun Microsystems, Inc.
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*/
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static struct timeval timeout = { 1, 0 };
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static struct timeval tottimeout = { 1, 0 };
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/*
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* Find the mapped port for program,version.
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* Calls the pmap service remotely to do the lookup.
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* Returns 0 if no map exists.
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*/
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static u_short
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__pmap_getport(address, program, version, protocol)
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struct sockaddr_in *address;
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u_long program;
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u_long version;
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u_int protocol;
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{
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u_short port = 0;
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int sock = -1;
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register CLIENT *client;
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struct pmap parms;
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address->sin_port = htons(PMAPPORT);
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client = clntudp_bufcreate(address, PMAPPROG,
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PMAPVERS, timeout, &sock, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE);
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if (client != (CLIENT *)NULL) {
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parms.pm_prog = program;
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parms.pm_vers = version;
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parms.pm_prot = protocol;
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parms.pm_port = 0; /* not needed or used */
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if (CLNT_CALL(client, PMAPPROC_GETPORT, xdr_pmap, &parms,
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xdr_u_short, &port, tottimeout) != RPC_SUCCESS){
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rpc_createerr.cf_stat = RPC_PMAPFAILURE;
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clnt_geterr(client, &rpc_createerr.cf_error);
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} else if (port == 0) {
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rpc_createerr.cf_stat = RPC_PROGNOTREGISTERED;
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}
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CLNT_DESTROY(client);
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}
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if (sock != -1)
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(void)close(sock);
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address->sin_port = 0;
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return (port);
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}
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/*
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* Transmit to YPPROC_DOMAIN_NONACK, return immediately.
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*/
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static bool_t *
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ypproc_domain_nonack_2_send(domainname *argp, CLIENT *clnt)
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{
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static bool_t clnt_res;
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struct timeval TIMEOUT = { 0, 0 };
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memset((char *)&clnt_res, 0, sizeof (clnt_res));
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if (clnt_call(clnt, YPPROC_DOMAIN_NONACK,
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(xdrproc_t) xdr_domainname, (caddr_t) argp,
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(xdrproc_t) xdr_bool, (caddr_t) &clnt_res,
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TIMEOUT) != RPC_SUCCESS) {
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return (NULL);
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}
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return (&clnt_res);
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}
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/*
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* Receive response from YPPROC_DOMAIN_NONACK asynchronously.
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*/
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static bool_t *
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ypproc_domain_nonack_2_recv(domainname *argp, CLIENT *clnt)
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{
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static bool_t clnt_res;
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struct timeval TIMEOUT = { 0, 0 };
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memset((char *)&clnt_res, 0, sizeof (clnt_res));
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if (clnt_call(clnt, YPPROC_DOMAIN_NONACK,
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(xdrproc_t) NULL, (caddr_t) argp,
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(xdrproc_t) xdr_bool, (caddr_t) &clnt_res,
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TIMEOUT) != RPC_SUCCESS) {
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return (NULL);
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}
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return (&clnt_res);
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}
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/*
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* "We have the machine that goes 'ping!'" -- Monty Python
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*
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* This function blasts packets at the YPPROC_DOMAIN_NONACK procedures
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* of the NIS servers listed in restricted_addrs structure.
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* Whoever replies the fastest becomes our chosen server.
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*
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* Note: THIS IS NOT A BROADCAST OPERATION! We could use clnt_broadcast()
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* for this, but that has the following problems:
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* - We only get the address of the machine that replied in the
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* 'eachresult' callback, and on multi-homed machines this can
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* lead to confusion.
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* - clnt_broadcast() only transmits to local networks, whereas with
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* NIS+ you can have a perfectly good server located anywhere on or
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* off the local network.
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* - clnt_broadcast() blocks for an arbitrary amount of time which the
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* caller can't control -- we want to avoid that.
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*
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* Also note that this has nothing to do with the NIS_PING procedure used
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* for replica updates.
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*/
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struct ping_req {
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struct sockaddr_in sin;
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unsigned long xid;
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};
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int __yp_ping(restricted_addrs, cnt, dom, port)
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struct in_addr *restricted_addrs;
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int cnt;
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char *dom;
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short *port;
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{
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struct timeval tv = { 5, 0 };
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struct ping_req **reqs;
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unsigned long i;
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int async;
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struct sockaddr_in sin, *any = NULL;
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int winner = -1;
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time_t xid_seed, xid_lookup;
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int sock, dontblock = 1;
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CLIENT *clnt;
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char *foo = dom;
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struct cu_data *cu;
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int validsrvs = 0;
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/* Set up handles. */
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reqs = calloc(1, sizeof(struct ping_req *) * cnt);
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xid_seed = time(NULL) ^ getpid();
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for (i = 0; i < cnt; i++) {
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bzero((char *)&sin, sizeof(sin));
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sin.sin_family = AF_INET;
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bcopy((char *)&restricted_addrs[i],
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(char *)&sin.sin_addr, sizeof(struct in_addr));
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sin.sin_port = htons(__pmap_getport(&sin, YPPROG,
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YPVERS, IPPROTO_UDP));
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if (sin.sin_port == 0)
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continue;
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reqs[i] = calloc(1, sizeof(struct ping_req));
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bcopy((char *)&sin, (char *)&reqs[i]->sin, sizeof(sin));
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any = &reqs[i]->sin;
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reqs[i]->xid = xid_seed;
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xid_seed++;
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validsrvs++;
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}
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/* Make sure at least one server was assigned */
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if (!validsrvs) {
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free(reqs);
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return(-1);
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}
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/* Create RPC handle */
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sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
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clnt = clntudp_create(any, YPPROG, YPVERS, tv, &sock);
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if (clnt == NULL) {
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close(sock);
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for (i = 0; i < cnt; i++)
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if (reqs[i] != NULL)
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free(reqs[i]);
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free(reqs);
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return(-1);
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}
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clnt->cl_auth = authunix_create_default();
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cu = (struct cu_data *)clnt->cl_private;
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tv.tv_sec = 0;
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clnt_control(clnt, CLSET_TIMEOUT, (char *)&tv);
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async = TRUE;
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clnt_control(clnt, CLSET_ASYNC, (char *)&async);
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ioctl(sock, FIONBIO, &dontblock);
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/* Transmit */
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for (i = 0; i < cnt; i++) {
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if (reqs[i] != NULL) {
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clnt_control(clnt, CLSET_XID, (char *)&reqs[i]->xid);
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bcopy((char *)&reqs[i]->sin, (char *)&cu->cu_raddr,
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sizeof(struct sockaddr_in));
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ypproc_domain_nonack_2_send(&foo, clnt);
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}
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}
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/* Receive reply */
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ypproc_domain_nonack_2_recv(&foo, clnt);
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/* Got a winner -- look him up. */
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clnt_control(clnt, CLGET_XID, (char *)&xid_lookup);
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for (i = 0; i < cnt; i++) {
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if (reqs[i] != NULL && reqs[i]->xid == xid_lookup) {
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winner = i;
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*port = reqs[i]->sin.sin_port;
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}
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}
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/* Shut everything down */
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auth_destroy(clnt->cl_auth);
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clnt_destroy(clnt);
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close(sock);
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for (i = 0; i < cnt; i++)
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if (reqs[i] != NULL)
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free(reqs[i]);
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free(reqs);
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return(winner);
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}
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