+++ /dev/null
-/*
- * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * "Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
- * Reserved. This file contains Original Code and/or Modifications of
- * Original Code as defined in and that are subject to the Apple Public
- * Source License Version 1.0 (the 'License'). You may not use this file
- * except in compliance with the License. Please obtain a copy of the
- * License at http://www.apple.com/publicsource and read it before using
- * this file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License."
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-/*
- * Copyright (c) 1988, 1992 The University of Utah and the Center
- * for Software Science (CSS).
- * Copyright (c) 1992, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * the Center for Software Science of the University of Utah Computer
- * Science Department. CSS requests users of this software to return
- * to css-dist@cs.utah.edu any improvements that they make and grant
- * CSS redistribution rights.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)rbootd.c 8.2 (Berkeley) 2/22/94
- *
- * Utah $Hdr: rbootd.c 3.1 92/07/06$
- * Author: Jeff Forys, University of Utah CSS
- */
-
-#ifndef lint
-static char copyright[] =
-"@(#) Copyright (c) 1992, 1993\n\
- The Regents of the University of California. All rights reserved.\n";
-#endif /* not lint */
-
-#ifndef lint
-static char sccsid[] = "@(#)rbootd.c 8.2 (Berkeley) 2/22/94";
-#endif /* not lint */
-
-#include <sys/param.h>
-#include <sys/ioctl.h>
-#include <sys/time.h>
-
-#include <ctype.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <syslog.h>
-#include <unistd.h>
-#include "defs.h"
-
-
-/* fd mask macros (backward compatibility with 4.2BSD) */
-#ifndef FD_SET
-#ifdef notdef
-typedef struct fd_set { /* this should already be in 4.2 */
- int fds_bits[1];
-} fd_set;
-#endif
-#define FD_ZERO(p) ((p)->fds_bits[0] = 0)
-#define FD_SET(n, p) ((p)->fds_bits[0] |= (1 << (n)))
-#define FD_CLR(n, p) ((p)->fds_bits[0] &= ~(1 << (n)))
-#define FD_ISSET(n, p) ((p)->fds_bits[0] & (1 << (n)))
-#endif
-
-int
-main(argc, argv)
- int argc;
- char *argv[];
-{
- int c, fd, omask, maxfds;
- fd_set rset;
-
- /*
- * Find what name we are running under.
- */
- ProgName = (ProgName = rindex(argv[0],'/')) ? ++ProgName : *argv;
-
- /*
- * Close any open file descriptors.
- * Temporarily leave stdin & stdout open for `-d',
- * and stderr open for any pre-syslog error messages.
- */
- {
- int i, nfds = getdtablesize();
-
- for (i = 0; i < nfds; i++)
- if (i != fileno(stdin) && i != fileno(stdout) &&
- i != fileno(stderr))
- (void) close(i);
- }
-
- /*
- * Parse any arguments.
- */
- while ((c = getopt(argc, argv, "adi:")) != EOF)
- switch(c) {
- case 'a':
- BootAny++;
- break;
- case 'd':
- DebugFlg++;
- break;
- case 'i':
- IntfName = optarg;
- break;
- }
- for (; optind < argc; optind++) {
- if (ConfigFile == NULL)
- ConfigFile = argv[optind];
- else {
- fprintf(stderr,
- "%s: too many config files (`%s' ignored)\n",
- ProgName, argv[optind]);
- }
- }
-
- if (ConfigFile == NULL) /* use default config file */
- ConfigFile = DfltConfig;
-
- if (DebugFlg) {
- DbgFp = stdout; /* output to stdout */
-
- (void) signal(SIGUSR1, SIG_IGN); /* dont muck w/DbgFp */
- (void) signal(SIGUSR2, SIG_IGN);
- } else {
- (void) fclose(stdin); /* dont need these */
- (void) fclose(stdout);
-
- /*
- * Fork off a child to do the work & exit.
- */
- switch(fork()) {
- case -1: /* fork failed */
- fprintf(stderr, "%s: ", ProgName);
- perror("fork");
- Exit(0);
- case 0: /* this is the CHILD */
- break;
- default: /* this is the PARENT */
- _exit(0);
- }
-
- /*
- * Try to disassociate from the current tty.
- */
- {
- char *devtty = "/dev/tty";
- int i;
-
- if ((i = open(devtty, O_RDWR)) < 0) {
- /* probably already disassociated */
- if (setpgrp(0, 0) < 0) {
- fprintf(stderr, "%s: ", ProgName);
- perror("setpgrp");
- }
- } else {
- if (ioctl(i, (u_long)TIOCNOTTY, (char *)0) < 0){
- fprintf(stderr, "%s: ", ProgName);
- perror("ioctl");
- }
- (void) close(i);
- }
- }
-
- (void) signal(SIGUSR1, DebugOn);
- (void) signal(SIGUSR2, DebugOff);
- }
-
- (void) fclose(stderr); /* finished with it */
-
-#ifdef SYSLOG4_2
- openlog(ProgName, LOG_PID);
-#else
- openlog(ProgName, LOG_PID, LOG_DAEMON);
-#endif
-
- /*
- * If no interface was specified, get one now.
- *
- * This is convoluted because we want to get the default interface
- * name for the syslog("restarted") message. If BpfGetIntfName()
- * runs into an error, it will return a syslog-able error message
- * (in `errmsg') which will be displayed here.
- */
- if (IntfName == NULL) {
- char *errmsg;
-
- if ((IntfName = BpfGetIntfName(&errmsg)) == NULL) {
- syslog(LOG_NOTICE, "restarted (??)");
- syslog(LOG_ERR, errmsg);
- Exit(0);
- }
- }
-
- syslog(LOG_NOTICE, "restarted (%s)", IntfName);
-
- (void) signal(SIGHUP, ReConfig);
- (void) signal(SIGINT, Exit);
- (void) signal(SIGTERM, Exit);
-
- /*
- * Grab our host name and pid.
- */
- if (gethostname(MyHost, MAXHOSTNAMELEN) < 0) {
- syslog(LOG_ERR, "gethostname: %m");
- Exit(0);
- }
- MyHost[MAXHOSTNAMELEN] = '\0';
-
- MyPid = getpid();
-
- /*
- * Write proc's pid to a file.
- */
- {
- FILE *fp;
-
- if ((fp = fopen(PidFile, "w")) != NULL) {
- (void) fprintf(fp, "%d\n", MyPid);
- (void) fclose(fp);
- } else {
- syslog(LOG_WARNING, "fopen: failed (%s)", PidFile);
- }
- }
-
- /*
- * All boot files are relative to the boot directory, we might
- * as well chdir() there to make life easier.
- */
- if (chdir(BootDir) < 0) {
- syslog(LOG_ERR, "chdir: %m (%s)", BootDir);
- Exit(0);
- }
-
- /*
- * Initial configuration.
- */
- omask = sigblock(sigmask(SIGHUP)); /* prevent reconfig's */
- if (GetBootFiles() == 0) /* get list of boot files */
- Exit(0);
- if (ParseConfig() == 0) /* parse config file */
- Exit(0);
-
- /*
- * Open and initialize a BPF device for the appropriate interface.
- * If an error is encountered, a message is displayed and Exit()
- * is called.
- */
- fd = BpfOpen();
-
- (void) sigsetmask(omask); /* allow reconfig's */
-
- /*
- * Main loop: receive a packet, determine where it came from,
- * and if we service this host, call routine to handle request.
- */
- maxfds = fd + 1;
- FD_ZERO(&rset);
- FD_SET(fd, &rset);
- for (;;) {
- struct timeval timeout;
- fd_set r;
- int nsel;
-
- r = rset;
-
- if (RmpConns == NULL) { /* timeout isnt necessary */
- nsel = select(maxfds, &r, (fd_set *)0, (fd_set *)0,
- (struct timeval *)0);
- } else {
- timeout.tv_sec = RMP_TIMEOUT;
- timeout.tv_usec = 0;
- nsel = select(maxfds, &r, (fd_set *)0, (fd_set *)0,
- &timeout);
- }
-
- if (nsel < 0) {
- if (errno == EINTR)
- continue;
- syslog(LOG_ERR, "select: %m");
- Exit(0);
- } else if (nsel == 0) { /* timeout */
- DoTimeout(); /* clear stale conns */
- continue;
- }
-
- if (FD_ISSET(fd, &r)) {
- RMPCONN rconn;
- CLIENT *client, *FindClient();
- int doread = 1;
-
- while (BpfRead(&rconn, doread)) {
- doread = 0;
-
- if (DbgFp != NULL) /* display packet */
- DispPkt(&rconn,DIR_RCVD);
-
- omask = sigblock(sigmask(SIGHUP));
-
- /*
- * If we do not restrict service, set the
- * client to NULL (ProcessPacket() handles
- * this). Otherwise, check that we can
- * service this host; if not, log a message
- * and ignore the packet.
- */
- if (BootAny) {
- client = NULL;
- } else if ((client=FindClient(&rconn))==NULL) {
- syslog(LOG_INFO,
- "%s: boot packet ignored",
- EnetStr(&rconn));
- (void) sigsetmask(omask);
- continue;
- }
-
- ProcessPacket(&rconn,client);
-
- (void) sigsetmask(omask);
- }
- }
- }
-}
-
-/*
-** DoTimeout -- Free any connections that have timed out.
-**
-** Parameters:
-** None.
-**
-** Returns:
-** Nothing.
-**
-** Side Effects:
-** - Timed out connections in `RmpConns' will be freed.
-*/
-void
-DoTimeout()
-{
- register RMPCONN *rtmp;
- struct timeval now;
-
- (void) gettimeofday(&now, (struct timezone *)0);
-
- /*
- * For each active connection, if RMP_TIMEOUT seconds have passed
- * since the last packet was sent, delete the connection.
- */
- for (rtmp = RmpConns; rtmp != NULL; rtmp = rtmp->next)
- if ((rtmp->tstamp.tv_sec + RMP_TIMEOUT) < now.tv_sec) {
- syslog(LOG_WARNING, "%s: connection timed out (%u)",
- EnetStr(rtmp), rtmp->rmp.r_type);
- RemoveConn(rtmp);
- }
-}
-
-/*
-** FindClient -- Find client associated with a packet.
-**
-** Parameters:
-** rconn - the new packet.
-**
-** Returns:
-** Pointer to client info if found, NULL otherwise.
-**
-** Side Effects:
-** None.
-**
-** Warnings:
-** - This routine must be called with SIGHUP blocked since
-** a reconfigure can invalidate the information returned.
-*/
-
-CLIENT *
-FindClient(rconn)
- register RMPCONN *rconn;
-{
- register CLIENT *ctmp;
-
- for (ctmp = Clients; ctmp != NULL; ctmp = ctmp->next)
- if (bcmp((char *)&rconn->rmp.hp_hdr.saddr[0],
- (char *)&ctmp->addr[0], RMP_ADDRLEN) == 0)
- break;
-
- return(ctmp);
-}
-
-/*
-** Exit -- Log an error message and exit.
-**
-** Parameters:
-** sig - caught signal (or zero if not dying on a signal).
-**
-** Returns:
-** Does not return.
-**
-** Side Effects:
-** - This process ceases to exist.
-*/
-void
-Exit(sig)
- int sig;
-{
- if (sig > 0)
- syslog(LOG_ERR, "going down on signal %d", sig);
- else
- syslog(LOG_ERR, "going down with fatal error");
- BpfClose();
- exit(1);
-}
-
-/*
-** ReConfig -- Get new list of boot files and reread config files.
-**
-** Parameters:
-** None.
-**
-** Returns:
-** Nothing.
-**
-** Side Effects:
-** - All active connections are dropped.
-** - List of boot-able files is changed.
-** - List of clients is changed.
-**
-** Warnings:
-** - This routine must be called with SIGHUP blocked.
-*/
-void
-ReConfig(signo)
- int signo;
-{
- syslog(LOG_NOTICE, "reconfiguring boot server");
-
- FreeConns();
-
- if (GetBootFiles() == 0)
- Exit(0);
-
- if (ParseConfig() == 0)
- Exit(0);
-}
-
-/*
-** DebugOff -- Turn off debugging.
-**
-** Parameters:
-** None.
-**
-** Returns:
-** Nothing.
-**
-** Side Effects:
-** - Debug file is closed.
-*/
-void
-DebugOff(signo)
- int signo;
-{
- if (DbgFp != NULL)
- (void) fclose(DbgFp);
-
- DbgFp = NULL;
-}
-
-/*
-** DebugOn -- Turn on debugging.
-**
-** Parameters:
-** None.
-**
-** Returns:
-** Nothing.
-**
-** Side Effects:
-** - Debug file is opened/truncated if not already opened,
-** otherwise do nothing.
-*/
-void
-DebugOn(signo)
- int signo;
-{
- if (DbgFp == NULL) {
- if ((DbgFp = fopen(DbgFile, "w")) == NULL)
- syslog(LOG_ERR, "can't open debug file (%s)", DbgFile);
- }
-}
projects / apple / network_cmds.git / blobdiff