diff options
Diffstat (limited to 'libexec/rbootd/rbootd.c')
| -rw-r--r-- | libexec/rbootd/rbootd.c | 508 |
1 files changed, 0 insertions, 508 deletions
diff --git a/libexec/rbootd/rbootd.c b/libexec/rbootd/rbootd.c deleted file mode 100644 index aa01583496f2..000000000000 --- a/libexec/rbootd/rbootd.c +++ /dev/null @@ -1,508 +0,0 @@ -/* - * 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); - } -} |