Add a command-line option `-I' to disable logging from UDP.
Document `-d' and `-I'. Add a BUGS section noting that logging from UDP is an unauthenticated remote disk-filling service, and probably should be disabled by default in the absence of some sort of authentication.
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2020-12-20 02:59:44 +00:00
svn path=/head/; revision=11448
@ -30,8 +30,9 @@
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)syslogd.8 8.1 (Berkeley) 6/6/93
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.\" $Id$
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.\"
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.Dd June 6, 1993
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.Dd October 12, 1995
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.Dt SYSLOGD 8
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.Os BSD 4.2
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.Sh NAME
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@ -39,6 +40,7 @@
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.Nd log systems messages
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.Sh SYNOPSIS
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.Nm syslogd
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.Op Fl dI
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.Op Fl f Ar config_file
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.Op Fl m Ar mark_interval
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.Op Fl p Ar log_socket
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@ -48,10 +50,17 @@ reads and logs messages to the system console, log files, other
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machines and/or users as specified by its configuration file.
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The options are as follows:
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.Bl -tag -width Ds
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.It Fl d
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Put
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.Nm syslogd
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into debugging mode. This is probably only of use to developers working on
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.Nm syslogd .
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.It Fl f
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Specify the pathname of an alternate configuration file;
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the default is
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.Pa /etc/syslog.conf .
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.It Fl I
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Do not log messages received in UDP packets.
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.It Fl m
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Select the number of minutes between ``mark'' messages;
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the default is 20 minutes.
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@ -120,3 +129,10 @@ The
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.Nm
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command appeared in
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.Bx 4.3 .
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.Sh BUGS
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The ability to log messages received in UDP packets is equivalent to
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an unauthenticated remote disk-filling service, and should probably be
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disabled by default. Some sort of
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.No inter- Ns Nm syslogd
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authentication mechanism ought to be worked out.
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@ -32,13 +32,14 @@
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*/
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#ifndef lint
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static char copyright[] =
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static const char copyright[] =
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"@(#) Copyright (c) 1983, 1988, 1993, 1994\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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/*
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static char sccsid[] = "@(#)syslogd.c 8.3 (Berkeley) 4/4/94";
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*/
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static const char rcsid[] =
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"$Id$";
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#endif /* not lint */
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/*
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@ -103,10 +104,10 @@ static char sccsid[] = "@(#)syslogd.c 8.3 (Berkeley) 4/4/94";
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#define SYSLOG_NAMES
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#include <sys/syslog.h>
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char *LogName = _PATH_LOG;
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char *ConfFile = _PATH_LOGCONF;
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char *PidFile = _PATH_LOGPID;
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char ctty[] = _PATH_CONSOLE;
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const char *LogName = _PATH_LOG;
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const char *ConfFile = _PATH_LOGCONF;
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const char *PidFile = _PATH_LOGPID;
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const char ctty[] = _PATH_CONSOLE;
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#define FDMASK(fd) (1 << (fd))
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@ -213,13 +214,15 @@ main(argc, argv)
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int argc;
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char *argv[];
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{
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int ch, funix, i, inetm, fklog, klogm, len;
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int ch, funix, i, inetm, fklog, klogm, len, noudp;
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struct sockaddr_un sunx, fromunix;
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struct sockaddr_in sin, frominet;
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FILE *fp;
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char *p, line[MSG_BSIZE + 1];
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while ((ch = getopt(argc, argv, "df:m:p:")) != EOF)
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noudp = 0;
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while ((ch = getopt(argc, argv, "df:Im:p:")) != EOF)
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switch(ch) {
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case 'd': /* debug */
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Debug++;
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@ -227,6 +230,9 @@ main(argc, argv)
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case 'f': /* configuration file */
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ConfFile = optarg;
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break;
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case 'I': /* disable logging from UDP packets */
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noudp = 1;
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break;
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case 'm': /* mark interval */
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MarkInterval = atoi(optarg) * 60;
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break;
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@ -276,7 +282,8 @@ main(argc, argv)
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die(0);
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} else
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created_lsock = 1;
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finet = socket(AF_INET, SOCK_DGRAM, 0);
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finet = noudp ? -1 : socket(AF_INET, SOCK_DGRAM, 0);
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inetm = 0;
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if (finet >= 0) {
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struct servent *sp;
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@ -370,8 +377,9 @@ void
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usage()
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{
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(void)fprintf(stderr,
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"usage: syslogd [-f conffile] [-m markinterval] [-p logpath]\n");
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fprintf(stderr,
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"usage: syslogd [-di] [-f conffile] [-m markinterval]"
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" [-p logpath]\n");
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exit(1);
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}
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