886 lines
22 KiB
C
886 lines
22 KiB
C
/* $NetBSD: rpcbind.c,v 1.3 2002/11/08 00:16:40 fvdl Exp $ */
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/* $FreeBSD$ */
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/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 2009, Sun Microsystems, Inc.
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* 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 are met:
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of Sun Microsystems, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND 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 THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1984 - 1991 by Sun Microsystems, Inc.
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*/
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/* #ident "@(#)rpcbind.c 1.19 94/04/25 SMI" */
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#if 0
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#ifndef lint
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static char sccsid[] = "@(#)rpcbind.c 1.35 89/04/21 Copyr 1984 Sun Micro";
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#endif
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#endif
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/*
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* rpcbind.c
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* Implements the program, version to address mapping for rpc.
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*
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/errno.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <sys/wait.h>
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#include <sys/signal.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <rpc/rpc.h>
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#include <rpc/rpc_com.h>
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#ifdef PORTMAP
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#include <netinet/in.h>
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#endif
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#include <arpa/inet.h>
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#include <fcntl.h>
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#include <netdb.h>
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#include <stdio.h>
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#include <netconfig.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <syslog.h>
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#include <err.h>
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#include <pwd.h>
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#include <string.h>
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#include <errno.h>
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#include "rpcbind.h"
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/* Global variables */
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int debugging = 0; /* Tell me what's going on */
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int doabort = 0; /* When debugging, do an abort on errors */
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int terminate_rfd; /* Pipefd to wake on signal */
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volatile sig_atomic_t doterminate = 0; /* Terminal signal received */
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rpcblist_ptr list_rbl; /* A list of version 3/4 rpcbind services */
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int rpcbindlockfd;
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/* who to suid to if -s is given */
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#define RUN_AS "daemon"
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#define RPCBINDDLOCK "/var/run/rpcbind.lock"
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static int runasdaemon = 0;
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int insecure = 0;
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int oldstyle_local = 0;
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#ifdef LIBWRAP
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int libwrap = 0;
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#endif
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int verboselog = 0;
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static char **hosts = NULL;
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static struct sockaddr **bound_sa;
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static int ipv6_only = 0;
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static int nhosts = 0;
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static int on = 1;
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static int terminate_wfd;
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#ifdef WARMSTART
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/* Local Variable */
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static int warmstart = 0; /* Grab an old copy of registrations. */
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#endif
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#ifdef PORTMAP
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struct pmaplist *list_pml; /* A list of version 2 rpcbind services */
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char *udptrans; /* Name of UDP transport */
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char *tcptrans; /* Name of TCP transport */
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char *udp_uaddr; /* Universal UDP address */
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char *tcp_uaddr; /* Universal TCP address */
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#endif
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static char servname[] = "rpcbind";
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static char superuser[] = "superuser";
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int main(int, char *[]);
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static int init_transport(struct netconfig *);
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static void rbllist_add(rpcprog_t, rpcvers_t, struct netconfig *,
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struct netbuf *);
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static void terminate(int);
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static void parseargs(int, char *[]);
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static void update_bound_sa(void);
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int
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main(int argc, char *argv[])
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{
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struct netconfig *nconf;
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void *nc_handle; /* Net config handle */
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struct rlimit rl;
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int maxrec = RPC_MAXDATASIZE;
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int error, fds[2];
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parseargs(argc, argv);
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update_bound_sa();
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/* Check that another rpcbind isn't already running. */
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if ((rpcbindlockfd = (open(RPCBINDDLOCK,
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O_RDONLY|O_CREAT, 0444))) == -1)
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err(1, "%s", RPCBINDDLOCK);
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if(flock(rpcbindlockfd, LOCK_EX|LOCK_NB) == -1 && errno == EWOULDBLOCK)
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errx(1, "another rpcbind is already running. Aborting");
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getrlimit(RLIMIT_NOFILE, &rl);
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if (rl.rlim_cur < 128) {
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if (rl.rlim_max <= 128)
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rl.rlim_cur = rl.rlim_max;
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else
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rl.rlim_cur = 128;
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setrlimit(RLIMIT_NOFILE, &rl);
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}
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openlog("rpcbind", LOG_CONS, LOG_DAEMON);
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if (geteuid()) { /* This command allowed only to root */
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fprintf(stderr, "Sorry. You are not superuser\n");
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exit(1);
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}
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nc_handle = setnetconfig(); /* open netconfig file */
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if (nc_handle == NULL) {
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syslog(LOG_ERR, "could not read /etc/netconfig");
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exit(1);
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}
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#ifdef PORTMAP
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udptrans = "";
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tcptrans = "";
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#endif
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nconf = getnetconfigent("local");
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if (nconf == NULL)
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nconf = getnetconfigent("unix");
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if (nconf == NULL) {
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syslog(LOG_ERR, "%s: can't find local transport\n", argv[0]);
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exit(1);
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}
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rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec);
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init_transport(nconf);
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while ((nconf = getnetconfig(nc_handle))) {
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if (nconf->nc_flag & NC_VISIBLE) {
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if (ipv6_only == 1 && strcmp(nconf->nc_protofmly,
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"inet") == 0) {
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/* DO NOTHING */
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} else
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init_transport(nconf);
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}
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}
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endnetconfig(nc_handle);
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/*
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* Allocate pipe fd to wake main thread from signal handler in non-racy
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* way.
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*/
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error = pipe(fds);
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if (error != 0)
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err(1, "pipe failed");
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terminate_rfd = fds[0];
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terminate_wfd = fds[1];
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/* catch the usual termination signals for graceful exit */
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(void) signal(SIGCHLD, reap);
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(void) signal(SIGINT, terminate);
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(void) signal(SIGTERM, terminate);
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(void) signal(SIGQUIT, terminate);
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/* ignore others that could get sent */
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(void) signal(SIGPIPE, SIG_IGN);
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(void) signal(SIGHUP, SIG_IGN);
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(void) signal(SIGUSR1, SIG_IGN);
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(void) signal(SIGUSR2, SIG_IGN);
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#ifdef WARMSTART
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if (warmstart) {
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read_warmstart();
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}
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#endif
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if (debugging) {
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printf("rpcbind debugging enabled.");
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if (doabort) {
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printf(" Will abort on errors!\n");
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} else {
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printf("\n");
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}
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} else {
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if (daemon(0, 0))
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err(1, "fork failed");
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}
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if (runasdaemon) {
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struct passwd *p;
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if((p = getpwnam(RUN_AS)) == NULL) {
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syslog(LOG_ERR, "cannot get uid of daemon: %m");
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exit(1);
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}
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if (setuid(p->pw_uid) == -1) {
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syslog(LOG_ERR, "setuid to daemon failed: %m");
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exit(1);
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}
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}
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network_init();
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my_svc_run();
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syslog(LOG_ERR, "svc_run returned unexpectedly");
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rpcbind_abort();
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/* NOTREACHED */
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return 0;
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}
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/*
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* Adds the entry into the rpcbind database.
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* If PORTMAP, then for UDP and TCP, it adds the entries for version 2 also
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* Returns 0 if succeeds, else fails
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*/
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static int
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init_transport(struct netconfig *nconf)
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{
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int fd;
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struct t_bind taddr;
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struct addrinfo hints, *res = NULL;
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struct __rpc_sockinfo si;
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SVCXPRT *my_xprt;
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int status; /* bound checking ? */
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int aicode;
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int addrlen;
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int nhostsbak;
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int bound;
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struct sockaddr *sa;
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u_int32_t host_addr[4]; /* IPv4 or IPv6 */
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struct sockaddr_un sun;
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mode_t oldmask;
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if ((nconf->nc_semantics != NC_TPI_CLTS) &&
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(nconf->nc_semantics != NC_TPI_COTS) &&
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(nconf->nc_semantics != NC_TPI_COTS_ORD))
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return (1); /* not my type */
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#ifdef ND_DEBUG
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if (debugging) {
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int i;
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char **s;
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(void)fprintf(stderr, "%s: %ld lookup routines :\n",
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nconf->nc_netid, nconf->nc_nlookups);
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for (i = 0, s = nconf->nc_lookups; i < nconf->nc_nlookups;
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i++, s++)
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fprintf(stderr, "[%d] - %s\n", i, *s);
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}
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#endif
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/*
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* XXX - using RPC library internal functions.
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*/
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if ((strcmp(nconf->nc_netid, "local") == 0) ||
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(strcmp(nconf->nc_netid, "unix") == 0)) {
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/*
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* For other transports we call this later, for each socket we
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* like to bind.
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*/
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if ((fd = __rpc_nconf2fd(nconf)) < 0) {
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int non_fatal = 0;
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if (errno == EAFNOSUPPORT)
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non_fatal = 1;
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syslog(non_fatal?LOG_DEBUG:LOG_ERR, "cannot create socket for %s",
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nconf->nc_netid);
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return (1);
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}
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}
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if (!__rpc_nconf2sockinfo(nconf, &si)) {
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syslog(LOG_ERR, "cannot get information for %s",
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nconf->nc_netid);
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return (1);
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}
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if ((strcmp(nconf->nc_netid, "local") == 0) ||
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(strcmp(nconf->nc_netid, "unix") == 0)) {
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memset(&sun, 0, sizeof sun);
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sun.sun_family = AF_LOCAL;
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unlink(_PATH_RPCBINDSOCK);
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strcpy(sun.sun_path, _PATH_RPCBINDSOCK);
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sun.sun_len = SUN_LEN(&sun);
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addrlen = sizeof (struct sockaddr_un);
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sa = (struct sockaddr *)&sun;
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} else {
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/* Get rpcbind's address on this transport */
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memset(&hints, 0, sizeof hints);
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hints.ai_flags = AI_PASSIVE;
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hints.ai_family = si.si_af;
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hints.ai_socktype = si.si_socktype;
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hints.ai_protocol = si.si_proto;
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}
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if ((strcmp(nconf->nc_netid, "local") != 0) &&
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(strcmp(nconf->nc_netid, "unix") != 0)) {
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/*
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* If no hosts were specified, just bind to INADDR_ANY.
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* Otherwise make sure 127.0.0.1 is added to the list.
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*/
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nhostsbak = nhosts + 1;
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hosts = realloc(hosts, nhostsbak * sizeof(char *));
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if (nhostsbak == 1)
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hosts[0] = "*";
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else {
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if (hints.ai_family == AF_INET) {
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hosts[nhostsbak - 1] = "127.0.0.1";
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} else if (hints.ai_family == AF_INET6) {
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hosts[nhostsbak - 1] = "::1";
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} else
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return 1;
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}
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/*
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* Bind to specific IPs if asked to
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*/
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bound = 0;
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while (nhostsbak > 0) {
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--nhostsbak;
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/*
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* XXX - using RPC library internal functions.
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*/
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if ((fd = __rpc_nconf2fd(nconf)) < 0) {
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int non_fatal = 0;
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if (errno == EAFNOSUPPORT &&
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nconf->nc_semantics != NC_TPI_CLTS)
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non_fatal = 1;
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syslog(non_fatal ? LOG_DEBUG : LOG_ERR,
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"cannot create socket for %s", nconf->nc_netid);
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return (1);
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}
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switch (hints.ai_family) {
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case AF_INET:
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if (inet_pton(AF_INET, hosts[nhostsbak],
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host_addr) == 1) {
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hints.ai_flags &= AI_NUMERICHOST;
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} else {
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/*
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* Skip if we have an AF_INET6 address.
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*/
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if (inet_pton(AF_INET6,
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hosts[nhostsbak], host_addr) == 1) {
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close(fd);
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continue;
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}
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}
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break;
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case AF_INET6:
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if (inet_pton(AF_INET6, hosts[nhostsbak],
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host_addr) == 1) {
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hints.ai_flags &= AI_NUMERICHOST;
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} else {
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/*
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* Skip if we have an AF_INET address.
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*/
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if (inet_pton(AF_INET, hosts[nhostsbak],
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host_addr) == 1) {
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close(fd);
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continue;
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}
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}
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if (setsockopt(fd, IPPROTO_IPV6,
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IPV6_V6ONLY, &on, sizeof on) < 0) {
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syslog(LOG_ERR,
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"can't set v6-only binding for "
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"ipv6 socket: %m");
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continue;
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}
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break;
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default:
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break;
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}
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/*
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* If no hosts were specified, just bind to INADDR_ANY
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*/
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if (strcmp("*", hosts[nhostsbak]) == 0)
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hosts[nhostsbak] = NULL;
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if ((strcmp(nconf->nc_netid, "local") != 0) &&
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(strcmp(nconf->nc_netid, "unix") != 0)) {
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if ((aicode = getaddrinfo(hosts[nhostsbak],
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servname, &hints, &res)) != 0) {
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syslog(LOG_ERR,
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"cannot get local address for %s: %s",
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nconf->nc_netid, gai_strerror(aicode));
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continue;
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}
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addrlen = res->ai_addrlen;
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sa = (struct sockaddr *)res->ai_addr;
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}
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oldmask = umask(S_IXUSR|S_IXGRP|S_IXOTH);
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if (bind(fd, sa, addrlen) != 0) {
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syslog(LOG_ERR, "cannot bind %s on %s: %m",
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(hosts[nhostsbak] == NULL) ? "*" :
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hosts[nhostsbak], nconf->nc_netid);
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if (res != NULL)
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freeaddrinfo(res);
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continue;
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} else
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bound = 1;
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(void)umask(oldmask);
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/* Copy the address */
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taddr.addr.len = taddr.addr.maxlen = addrlen;
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taddr.addr.buf = malloc(addrlen);
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if (taddr.addr.buf == NULL) {
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syslog(LOG_ERR,
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"cannot allocate memory for %s address",
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nconf->nc_netid);
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if (res != NULL)
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freeaddrinfo(res);
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return 1;
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}
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memcpy(taddr.addr.buf, sa, addrlen);
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#ifdef ND_DEBUG
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if (debugging) {
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/*
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* for debugging print out our universal
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* address
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*/
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char *uaddr;
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struct netbuf nb;
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nb.buf = sa;
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nb.len = nb.maxlen = sa->sa_len;
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uaddr = taddr2uaddr(nconf, &nb);
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(void)fprintf(stderr,
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"rpcbind : my address is %s\n", uaddr);
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(void)free(uaddr);
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}
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#endif
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if (nconf->nc_semantics != NC_TPI_CLTS)
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listen(fd, SOMAXCONN);
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my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr,
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RPC_MAXDATASIZE, RPC_MAXDATASIZE);
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if (my_xprt == (SVCXPRT *)NULL) {
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syslog(LOG_ERR, "%s: could not create service",
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nconf->nc_netid);
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goto error;
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}
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}
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if (!bound)
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return 1;
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} else {
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oldmask = umask(S_IXUSR|S_IXGRP|S_IXOTH);
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if (bind(fd, sa, addrlen) < 0) {
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syslog(LOG_ERR, "cannot bind %s: %m", nconf->nc_netid);
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if (res != NULL)
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freeaddrinfo(res);
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return 1;
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}
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(void) umask(oldmask);
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/* Copy the address */
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taddr.addr.len = taddr.addr.maxlen = addrlen;
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taddr.addr.buf = malloc(addrlen);
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if (taddr.addr.buf == NULL) {
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syslog(LOG_ERR, "cannot allocate memory for %s address",
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nconf->nc_netid);
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if (res != NULL)
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freeaddrinfo(res);
|
|
return 1;
|
|
}
|
|
memcpy(taddr.addr.buf, sa, addrlen);
|
|
#ifdef ND_DEBUG
|
|
if (debugging) {
|
|
/* for debugging print out our universal address */
|
|
char *uaddr;
|
|
struct netbuf nb;
|
|
|
|
nb.buf = sa;
|
|
nb.len = nb.maxlen = sa->sa_len;
|
|
uaddr = taddr2uaddr(nconf, &nb);
|
|
(void) fprintf(stderr, "rpcbind : my address is %s\n",
|
|
uaddr);
|
|
(void) free(uaddr);
|
|
}
|
|
#endif
|
|
|
|
if (nconf->nc_semantics != NC_TPI_CLTS)
|
|
listen(fd, SOMAXCONN);
|
|
|
|
my_xprt = (SVCXPRT *)svc_tli_create(fd, nconf, &taddr,
|
|
RPC_MAXDATASIZE, RPC_MAXDATASIZE);
|
|
if (my_xprt == (SVCXPRT *)NULL) {
|
|
syslog(LOG_ERR, "%s: could not create service",
|
|
nconf->nc_netid);
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
#ifdef PORTMAP
|
|
/*
|
|
* Register both the versions for tcp/ip, udp/ip and local.
|
|
*/
|
|
if ((strcmp(nconf->nc_protofmly, NC_INET) == 0 &&
|
|
(strcmp(nconf->nc_proto, NC_TCP) == 0 ||
|
|
strcmp(nconf->nc_proto, NC_UDP) == 0)) ||
|
|
(strcmp(nconf->nc_netid, "unix") == 0) ||
|
|
(strcmp(nconf->nc_netid, "local") == 0)) {
|
|
struct pmaplist *pml;
|
|
|
|
if (!svc_register(my_xprt, PMAPPROG, PMAPVERS,
|
|
pmap_service, 0)) {
|
|
syslog(LOG_ERR, "could not register on %s",
|
|
nconf->nc_netid);
|
|
goto error;
|
|
}
|
|
pml = malloc(sizeof (struct pmaplist));
|
|
if (pml == NULL) {
|
|
syslog(LOG_ERR, "no memory!");
|
|
exit(1);
|
|
}
|
|
pml->pml_map.pm_prog = PMAPPROG;
|
|
pml->pml_map.pm_vers = PMAPVERS;
|
|
pml->pml_map.pm_port = PMAPPORT;
|
|
if (strcmp(nconf->nc_proto, NC_TCP) == 0) {
|
|
if (tcptrans[0]) {
|
|
free(pml);
|
|
pml = NULL;
|
|
syslog(LOG_ERR,
|
|
"cannot have more than one TCP transport");
|
|
goto error;
|
|
}
|
|
tcptrans = strdup(nconf->nc_netid);
|
|
pml->pml_map.pm_prot = IPPROTO_TCP;
|
|
|
|
/* Let's snarf the universal address */
|
|
/* "h1.h2.h3.h4.p1.p2" */
|
|
tcp_uaddr = taddr2uaddr(nconf, &taddr.addr);
|
|
} else if (strcmp(nconf->nc_proto, NC_UDP) == 0) {
|
|
if (udptrans[0]) {
|
|
syslog(LOG_ERR,
|
|
"cannot have more than one UDP transport");
|
|
goto error;
|
|
}
|
|
udptrans = strdup(nconf->nc_netid);
|
|
pml->pml_map.pm_prot = IPPROTO_UDP;
|
|
|
|
/* Let's snarf the universal address */
|
|
/* "h1.h2.h3.h4.p1.p2" */
|
|
udp_uaddr = taddr2uaddr(nconf, &taddr.addr);
|
|
} else if (strcmp(nconf->nc_netid, "local") == 0)
|
|
pml->pml_map.pm_prot = IPPROTO_ST;
|
|
else if (strcmp(nconf->nc_netid, "unix") == 0)
|
|
pml->pml_map.pm_prot = IPPROTO_ST;
|
|
pml->pml_next = list_pml;
|
|
list_pml = pml;
|
|
|
|
/* Add version 3 information */
|
|
pml = malloc(sizeof (struct pmaplist));
|
|
if (pml == NULL) {
|
|
syslog(LOG_ERR, "no memory!");
|
|
exit(1);
|
|
}
|
|
pml->pml_map = list_pml->pml_map;
|
|
pml->pml_map.pm_vers = RPCBVERS;
|
|
pml->pml_next = list_pml;
|
|
list_pml = pml;
|
|
|
|
/* Add version 4 information */
|
|
pml = malloc (sizeof (struct pmaplist));
|
|
if (pml == NULL) {
|
|
syslog(LOG_ERR, "no memory!");
|
|
exit(1);
|
|
}
|
|
pml->pml_map = list_pml->pml_map;
|
|
pml->pml_map.pm_vers = RPCBVERS4;
|
|
pml->pml_next = list_pml;
|
|
list_pml = pml;
|
|
|
|
/* Also add version 2 stuff to rpcbind list */
|
|
rbllist_add(PMAPPROG, PMAPVERS, nconf, &taddr.addr);
|
|
}
|
|
#endif
|
|
|
|
/* version 3 registration */
|
|
if (!svc_reg(my_xprt, RPCBPROG, RPCBVERS, rpcb_service_3, NULL)) {
|
|
syslog(LOG_ERR, "could not register %s version 3",
|
|
nconf->nc_netid);
|
|
goto error;
|
|
}
|
|
rbllist_add(RPCBPROG, RPCBVERS, nconf, &taddr.addr);
|
|
|
|
/* version 4 registration */
|
|
if (!svc_reg(my_xprt, RPCBPROG, RPCBVERS4, rpcb_service_4, NULL)) {
|
|
syslog(LOG_ERR, "could not register %s version 4",
|
|
nconf->nc_netid);
|
|
goto error;
|
|
}
|
|
rbllist_add(RPCBPROG, RPCBVERS4, nconf, &taddr.addr);
|
|
|
|
/* decide if bound checking works for this transport */
|
|
status = add_bndlist(nconf, &taddr.addr);
|
|
#ifdef BIND_DEBUG
|
|
if (debugging) {
|
|
if (status < 0) {
|
|
fprintf(stderr, "Error in finding bind status for %s\n",
|
|
nconf->nc_netid);
|
|
} else if (status == 0) {
|
|
fprintf(stderr, "check binding for %s\n",
|
|
nconf->nc_netid);
|
|
} else if (status > 0) {
|
|
fprintf(stderr, "No check binding for %s\n",
|
|
nconf->nc_netid);
|
|
}
|
|
}
|
|
#endif
|
|
/*
|
|
* rmtcall only supported on CLTS transports for now.
|
|
*/
|
|
if (nconf->nc_semantics == NC_TPI_CLTS) {
|
|
status = create_rmtcall_fd(nconf);
|
|
|
|
#ifdef BIND_DEBUG
|
|
if (debugging) {
|
|
if (status < 0) {
|
|
fprintf(stderr,
|
|
"Could not create rmtcall fd for %s\n",
|
|
nconf->nc_netid);
|
|
} else {
|
|
fprintf(stderr, "rmtcall fd for %s is %d\n",
|
|
nconf->nc_netid, status);
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
return (0);
|
|
error:
|
|
close(fd);
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Create the list of addresses that we're bound to. Normally, this
|
|
* list is empty because we're listening on the wildcard address
|
|
* (nhost == 0). If -h is specified on the command line, then
|
|
* bound_sa will have a list of the addresses that the program binds
|
|
* to specifically. This function takes that list and converts them to
|
|
* struct sockaddr * and stores them in bound_sa.
|
|
*/
|
|
static void
|
|
update_bound_sa(void)
|
|
{
|
|
struct addrinfo hints, *res = NULL;
|
|
int i;
|
|
|
|
if (nhosts == 0)
|
|
return;
|
|
bound_sa = malloc(sizeof(*bound_sa) * nhosts);
|
|
memset(&hints, 0, sizeof(hints));
|
|
hints.ai_family = PF_UNSPEC;
|
|
for (i = 0; i < nhosts; i++) {
|
|
if (getaddrinfo(hosts[i], NULL, &hints, &res) != 0)
|
|
continue;
|
|
bound_sa[i] = malloc(res->ai_addrlen);
|
|
memcpy(bound_sa[i], res->ai_addr, res->ai_addrlen);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Match the sa against the list of addresses we've bound to. If
|
|
* we've not specifically bound to anything, we match everything.
|
|
* Otherwise, if the IPv4 or IPv6 address matches one of the addresses
|
|
* in bound_sa, we return true. If not, we return false.
|
|
*/
|
|
int
|
|
listen_addr(const struct sockaddr *sa)
|
|
{
|
|
int i;
|
|
|
|
/*
|
|
* If nhosts == 0, then there were no -h options on the
|
|
* command line, so all addresses are addresses we're
|
|
* listening to.
|
|
*/
|
|
if (nhosts == 0)
|
|
return 1;
|
|
for (i = 0; i < nhosts; i++) {
|
|
if (bound_sa[i] == NULL ||
|
|
sa->sa_family != bound_sa[i]->sa_family)
|
|
continue;
|
|
switch (sa->sa_family) {
|
|
case AF_INET:
|
|
if (memcmp(&SA2SINADDR(sa), &SA2SINADDR(bound_sa[i]),
|
|
sizeof(struct in_addr)) == 0)
|
|
return (1);
|
|
break;
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
if (memcmp(&SA2SIN6ADDR(sa), &SA2SIN6ADDR(bound_sa[i]),
|
|
sizeof(struct in6_addr)) == 0)
|
|
return (1);
|
|
break;
|
|
#endif
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
rbllist_add(rpcprog_t prog, rpcvers_t vers, struct netconfig *nconf,
|
|
struct netbuf *addr)
|
|
{
|
|
rpcblist_ptr rbl;
|
|
|
|
rbl = malloc(sizeof (rpcblist));
|
|
if (rbl == NULL) {
|
|
syslog(LOG_ERR, "no memory!");
|
|
exit(1);
|
|
}
|
|
|
|
rbl->rpcb_map.r_prog = prog;
|
|
rbl->rpcb_map.r_vers = vers;
|
|
rbl->rpcb_map.r_netid = strdup(nconf->nc_netid);
|
|
rbl->rpcb_map.r_addr = taddr2uaddr(nconf, addr);
|
|
rbl->rpcb_map.r_owner = strdup(superuser);
|
|
rbl->rpcb_next = list_rbl; /* Attach to global list */
|
|
list_rbl = rbl;
|
|
}
|
|
|
|
/*
|
|
* Catch the signal and die
|
|
*/
|
|
static void
|
|
terminate(int signum)
|
|
{
|
|
char c = '\0';
|
|
ssize_t wr;
|
|
|
|
doterminate = signum;
|
|
wr = write(terminate_wfd, &c, 1);
|
|
if (wr < 1)
|
|
_exit(2);
|
|
}
|
|
|
|
void
|
|
rpcbind_abort(void)
|
|
{
|
|
#ifdef WARMSTART
|
|
write_warmstart(); /* Dump yourself */
|
|
#endif
|
|
abort();
|
|
}
|
|
|
|
/* get command line options */
|
|
static void
|
|
parseargs(int argc, char *argv[])
|
|
{
|
|
int c;
|
|
|
|
#ifdef WARMSTART
|
|
#define WSOP "w"
|
|
#else
|
|
#define WSOP ""
|
|
#endif
|
|
#ifdef LIBWRAP
|
|
#define WRAPOP "W"
|
|
#else
|
|
#define WRAPOP ""
|
|
#endif
|
|
while ((c = getopt(argc, argv, "6adh:iLls" WRAPOP WSOP)) != -1) {
|
|
switch (c) {
|
|
case '6':
|
|
ipv6_only = 1;
|
|
break;
|
|
case 'a':
|
|
doabort = 1; /* when debugging, do an abort on */
|
|
break; /* errors; for rpcbind developers */
|
|
/* only! */
|
|
case 'd':
|
|
debugging = 1;
|
|
break;
|
|
case 'h':
|
|
++nhosts;
|
|
hosts = realloc(hosts, nhosts * sizeof(char *));
|
|
if (hosts == NULL)
|
|
errx(1, "Out of memory");
|
|
hosts[nhosts - 1] = strdup(optarg);
|
|
if (hosts[nhosts - 1] == NULL)
|
|
errx(1, "Out of memory");
|
|
break;
|
|
case 'i':
|
|
insecure = 1;
|
|
break;
|
|
case 'L':
|
|
oldstyle_local = 1;
|
|
break;
|
|
case 'l':
|
|
verboselog = 1;
|
|
break;
|
|
case 's':
|
|
runasdaemon = 1;
|
|
break;
|
|
#ifdef LIBWRAP
|
|
case 'W':
|
|
libwrap = 1;
|
|
break;
|
|
#endif
|
|
#ifdef WARMSTART
|
|
case 'w':
|
|
warmstart = 1;
|
|
break;
|
|
#endif
|
|
default: /* error */
|
|
fprintf(stderr,
|
|
"usage: rpcbind [-6adiLls%s%s] [-h bindip]\n",
|
|
WRAPOP, WSOP);
|
|
exit (1);
|
|
}
|
|
}
|
|
if (doabort && !debugging) {
|
|
fprintf(stderr,
|
|
"-a (abort) specified without -d (debugging) -- ignored.\n");
|
|
doabort = 0;
|
|
}
|
|
#undef WSOP
|
|
}
|
|
|
|
void
|
|
reap(int dummy __unused)
|
|
{
|
|
int save_errno = errno;
|
|
|
|
while (wait3(NULL, WNOHANG, NULL) > 0)
|
|
;
|
|
errno = save_errno;
|
|
}
|
|
|
|
void
|
|
toggle_verboselog(int dummy __unused)
|
|
{
|
|
verboselog = !verboselog;
|
|
}
|