[Logcheck-devel] Re: logcheck 1.2.42 - Fedora RPM
Todd Troxell
ttroxell at debian.org
Thu Nov 17 17:10:12 UTC 2005
On Sat, Nov 12, 2005 at 08:00:33PM +0100, Iain Lea wrote:
> So I have to change the perms on all the logfiles...
> based on this I requirement I went and added a $RUN_AS_ANYUSER=[0|1]
> variable to start of logcheck.
I would probably check the group on /var/log/syslog as sometimes you just
need to add the logcheck user to the (ex. adm) group.
I am not so sure I want to make it easier to run this as root. If an admin
edits the actual code, it's more apparent that they might be breaking
something.
> I ended up doing the following to the 1.2.42 package:
>
> - reformatted to use tabs for indenting! (1.2.42 was
> using variable spaces and tabs. Now using just tabs.
Cool. I'll see about getting this applied.
> - Added NEED_LOCKFILE_PROGS=1 as default so can get
> logcheck to run with/without lockfile-progs package
> as after checking on other distribs it does not seem
> to be installed or in rpms even available. I checked
> it out for building it but the dependencies on the
> debian site meant I ended up with 3 packages to compile
> to get lockfile-progs built. Ended up defining
> LOCKFILE_[CREATE|TOUCH|REMOVE] variables with values
> set to lockfile-progs or touch, rm, touch on fedora.
The primitive locking you have included does not actually do any locking.
I'd say we either need to leave it as is or disable it entirely.
I'm wondering if we really need locking. The only things two instances should
share are the offset files, and if one gets updated, that's just less scanning
for the second instance.
#144118 is the reason locking was added. Perhaps something has changed?
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=144118
Cheers,
--
Todd Troxell
http://rapidpacket.com/~xtat
-------------- next part --------------
#!/bin/bash
#
# Copyright (C) 2004-2005 Debian Logcheck Team
# <logcheck-devel at alioth.lists.debian.org>
# Copyright (C) 2002,2003 Jonathan Middleton <jjm at ixtab.org.uk>
# Copyright (C) 1999-2002 Rene Mayrhofer <rmayr at debian.org>
# Copyright (C) 1996-1997 Craig Rowland <crowland at psionic.com>
# This file is part of Logcheck
# Logcheck is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# Logcheck is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with Logcheck; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
# $Id: logcheck,v 1.129 2005/09/02 06:38:22 ttroxell Exp $
if [ $UID == 0 ]; then
echo "logcheck should not be run as root. Use su to invoke logcheck:"
echo "su -s /bin/bash -c \"/usr/sbin/logcheck [options]\" logcheck"
echo "Or use sudo: sudo -u logcheck logcheck [options]."
# you may want to uncomment that hack to let logcheck invoke itself.
# su -s /bin/bash -c "$0 $*" logcheck
exit 1
fi
# set depending on if you want to use or have lockfile-progs installed
NEED_LOCKFILE_PROGS=0
LOCKFILE_CREATE=/usr/bin/lockfile-create
LOCKFILE_REMOVE=/usr/bin/lockfile-remove
LOCKFILE_TOUCH=/usr/bin/lockfile-touch
if [ -f $LOCKFILE_CREATE -o \
-f $LOCKFILE_REMOVE -o \
-f $LOCKFILE_TOUCH ]; then
debug "info: lockfile-progs package found!"
HAVE_LOCKFILE_PROGS=1
else
if [ $NEED_LOCKFILE_PROGS == 1 ]; then
echo "fatal: lockfile-progs is a prerequisite for logcheck, and was not found."
exit 1
else
# echo "warning: lockfile-progs package not found, using primitive lock methods."
LOCKFILE_CREATE="touch"
LOCKFILE_REMOVE="rm -f"
LOCKFILE_TOUCH="touch"
HAVE_LOCKFILE_PROGS=0
fi
fi
# Set the umask
umask 077
# Set the flag variables
SYSTEM=0
SECURITY=0
ATTACK=0
# Set the getopts string
GETOPTS="c:dhH:l:L:m:opr:RsS:tTuvw"
# Get the details for the email message
DATE="$(date +'%Y-%m-%d %H:%M')"
VERSION="1.2.43"
# Set the default report level
REPORTLEVEL="server"
# default to sent mails to local root
SENDMAILTO="root"
# Set the default subject lines
ATTACKSUBJECT="Security Alerts"
SECURITYSUBJECT="Security Events"
EVENTSSUBJECT="System Events"
ADDTAG="no"
# Set the default paths
RULEDIR="/etc/logcheck"
CONFFILE="/etc/logcheck/logcheck.conf"
STATEDIR="/var/lib/logcheck"
LOGFILES_LIST="/etc/logcheck/logcheck.logfiles"
LOGFILE_FALLBACK="/var/log/syslog"
LOGTAIL="/usr/sbin/logtail"
CAT="/bin/cat"
SYSLOG_SUMMARY="/usr/bin/syslog-summary"
# Set the options defaults
INTRO=1
LOGCHECKDEBUG=0
MAILOUT=0
NOCLEANUP=0
REBOOT=0
FQDN=0
SORTUNIQ=0
SUPPORT_CRACKING_IGNORE=0
SYSLOGSUMMARY=0
LOCKDIR="/var/lock/logcheck"
LOCKFILE="$LOCKDIR/logcheck"
# Carry out the clean up tasks
cleanup() {
if [ -n "$LOCK" ]; then
debug "cleanup: Killing ($LOCKFILE_TOUCH) - $LOCK"
kill $LOCK && unset LOCK
fi
if [ -f "$LOCKFILE.lock" ]; then
debug "cleanup: Removing lockfile: $LOCKFILE.lock"
if [ $HAVE_LOCKFILE_PROGS == 1 ]; then
$LOCKFILE_REMOVE $LOCKFILE
else
$LOCKFILE_REMOVE $LOCKFILE.lock
fi
fi
if [ -d $TMPDIR ]; then
# Remove the tmp directory
if [ $NOCLEANUP -eq 0 ];then
debug "Cleanup: Removing - $TMPDIR"
rm -r $TMPDIR
else
debug "cleanup: Not removing - $TMPDIR"
fi
fi
}
# Log debug output to standard error
debug() {
if [ $LOGCHECKDEBUG -eq 1 ]; then
echo "D: [$(date +%s)] $1" >&2
fi
}
# Add warning
warn () {
message=$1
debug "Warning - $message"
if [ -d $TMPDIR ]; then
echo "$message" >> $TMPDIR/warnings \
|| error "Could not append to $TMPDIR/warnings."
fi
echo
return 0
}
# Mail error message to sysadmin
error() {
message=$1
if [ "$2" = "noclean" ]; then
debug "error: Not removing lockfile"
else
if [ -n "$LOCK" ]; then
debug "error: Killing ($LOCKFILE_TOUCH) - $LOCK"
kill $LOCK && unset LOCK
fi
if [ -f "$LOCKFILE.lock" ]; then
debug "error: Removing lockfile: $LOCKFILE.lock"
if [ $HAVE_LOCKFILE_PROGS == 1 ]; then
$LOCKFILE_REMOVE $LOCKFILE
else
$LOCKFILE_REMOVE $LOCKFILE.lock
fi
fi
fi
debug "Error: $message"
if [ $MAILOUT -eq 0 ]; then
{
cat<<EOF
Warning: If you are seeing this message, your log files may not have been
checked!
Details:
$message
Check temporary directory: $TMPDIR
$(export)
EOF
} | mail -s "Logcheck: $HOSTNAME $DATE exiting due to errors" \
$SENDMAILTO
elif [ $MAILOUT -eq 1 ]; then
{
echo "Error: $message."
}
fi
exit 1
}
# Add an identification line at the beginning of the sent mail
setintro() {
if [ -f /etc/logcheck/header.txt -a -r /etc/logcheck/header.txt ] ; then
$CAT /etc/logcheck/header.txt >> $TMPDIR/report \
|| error "Could not append header to $TMPDIR/report Disk full?"
fi
}
# Add a footer to the report.
setfooter() {
if [ -f /etc/logcheck/footer.txt -a -r /etc/logcheck/footer.txt ] ; then
$CAT /etc/logcheck/footer.txt >> $TMPDIR/report \
|| error "Could not append footer to $TMPDIR/report Disk full?"
fi
}
# Clean a directory (or single file) to a cleaned tmp version
# takes two args: directory and cleaned file
cleanrules() {
dir=$1
cleaned=$2
if [ -d $dir ]; then
if [ ! -d $cleaned ]; then
mkdir $cleaned \
|| error "Could not make dir $cleaned for cleaned rulefiles."
fi
for rulefile in $(run-parts --list $dir); do
rulefile=$(basename $rulefile)
if [ -f ${dir}/${rulefile} ]; then
debug "cleanrules: ${dir}/${rulefile}"
# pipe to cat on greps to get usable exit status
egrep --text -v '^[[:space:]]*$|^#' $dir/$rulefile | cat \
>> $cleaned/$rulefile \
|| error "Couldn't append to $cleaned/$rulefile. Disk Full?"
fi
done
elif [ -f $dir ]; then
error "cleanrules: '$dir' is a file, not a directory"
elif [ -z $dir ]; then
error "cleanrules: called without argument"
fi
}
# Add any events to the report
report() {
if [ -s $TMPDIR/checked ]; then
printheader "$*" >> $TMPDIR/report \
|| error "Could not append to report. Disk Full?"
if [ $SYSLOGSUMMARY -eq 1 ] && [ -x $SYSLOG_SUMMARY ]; then
debug "report: running syslog-summary - $*"
$SYSLOG_SUMMARY $TMPDIR/checked | \
egrep -v "^Summarizing " | cat >> $TMPDIR/report \
|| error "Could not append to report. Disk Full?"
else
if [ $SYSLOGSUMMARY -eq 1 ] && [ ! -x $SYSLOG_SUMMARY ]; then
debug "report : WARNING : can't exec $SYSLOG_SUMMARY. Running without summary"
fi
debug "report: cat'ing - $*"
cat $TMPDIR/checked >> $TMPDIR/report \
|| error "Could not append to report. Disk full?"
fi
echo >> $TMPDIR/report \
|| error "Could not append to report. Disk full?"
return 0
else
return 1
fi
}
# Add eventual section titles to the report
printheader() {
char="="
header="$1"
number="$(echo $header | wc -c)"
num=1
line=""
while [ "$num" -lt "$number" ]; do
line="${line}${char}"
if [ "$char" = "=" ]; then
char="-"
else
char="="
fi
num=$(($num + 1))
done
echo "$header"
echo "$line"
}
# Mail the report
sendreport() {
if [ $REBOOT -eq 1 ]; then
subject="Reboot: $HOSTNAME $DATE $*"
else
subject="$HOSTNAME $DATE $*"
fi
if [ $ADDTAG = "yes" ]; then
subject="[logcheck] $subject"
fi
if [ $MAILOUT -eq 1 ]; then
debug "Sending report to STDOUT"
cat $TMPDIR/report
debug "Sent report to STDOUT"
else
debug "Sending report: '$subject' to $SENDMAILTO"
cat $TMPDIR/report | mail -s "$subject" $SENDMAILTO
fi
}
# Clean the report to level for type
greplogoutput() {
raise="$1"
sectionstring="$2"
ignore="$3"
ignorehigher="$4"
RETURN=1
for grepfile in $(ls -1 $raise); do
debug "greplogoutput: $grepfile"
# Raise entries that match
egrep --text -f $raise/$grepfile $TMPDIR/logoutput-sorted | cat \
> $TMPDIR/checked \
|| error "Could not output to $TMPDIR/checked. Disk Full?"
# apply different ignore rules
if [ -s $TMPDIR/checked ]; then
debug "greplogoutput: Entries in checked"
if [ -n "$ignore" -a -f "$ignore/$(basename $grepfile)" ]; then
cleanchecked "$ignore/$(basename $grepfile)"
fi
# quick and dirty fix for ignoring logcheck-foo files
# in the case logcheck itself has no raised entry
if [ -n "$ignore" -a -f "$ignore/logcheck-$(basename $grepfile)" ]; then
cleanchecked "$ignore/logcheck-$(basename $grepfile)"
fi
# If it's the logcheck file, we do something special
if [ "$(basename $grepfile)" = "logcheck" ]; then
# Now ignore all entries from the ignore dir
# old logcheck versions only ignored logcheck-<package> files
if [ -n "$ignore" ]; then
debug "Applying Logcheck override files"
for file in $(ls -1 $ignore/) ; do
debug "clean logcheck-<package>: $file"
cleanchecked "$ignore/$file"
done
else
debug "No Logcheck override files"
fi
debug "Cleaning logcheck"
# Remove any entries already reported
for file in $(ls $raise/ | grep -v '^logcheck') ; do
debug "Cleaning logcheck: $file"
cleanchecked "$raise/$file"
done
fi
if [ -n "$ignorehigher" ]; then
if [ -d $ignorehigher -a -s $TMPDIR/checked ]; then
cleanchecked "$ignorehigher"
fi
fi
# Apply local rules before we report
if [ -n "$ignore" ]; then
if [ -f $ignore/local -a -s $TMPDIR/checked ]; then
cleanchecked "$ignore/local"
fi
# Now apply any local-* files
for file in $(ls -1 $ignore/ | grep '^local-') ; do
cleanchecked "$ignore/$file"
done
fi
if [ "$(basename $grepfile)" = "logcheck" ]; then
report "${sectionstring}" && RETURN=0
else
report "${sectionstring} for $(basename $grepfile)" \
&& RETURN=0
fi
fi
done
debug "greplogoutput: returning $RETURN"
return $RETURN
}
# Process a logfile snippet with egrep.
cleanchecked() {
clean=$1
if [ -f $clean ]; then
debug "cleanchecked - file: $clean"
egrep --text -v -f $clean $TMPDIR/checked | cat >> $TMPDIR/checked.1 \
|| error "Could not output to $TMPDIR/checked.1 Disk full?"
mv $TMPDIR/checked.1 $TMPDIR/checked \
|| error "Could not move $TMPDIR/checked.1 to $TMPDIR/checked"
elif [ -d $clean ]; then
debug "cleanchecked - dir - $clean"
for file in $(ls -1 $clean/); do
debug "cleanchecked - dir - $clean/$file"
egrep --text -v -f "$clean/$file" $TMPDIR/checked | cat \
>> $TMPDIR/checked.1 \
|| error "Could not output to TMPDIR/checked.1 Disk Full?"
mv $TMPDIR/checked.1 $TMPDIR/checked \
|| error "Could not move $TMPDIR/checked.1 to $TMPDIR/checked"
done
else
error "cleanchecked: Not a file or a directory $clean"
fi
}
# Get the yet unseen part of one logfile.
logoutput() {
file=$1
# There are some problems with this section.
debug "logoutput called with file: $file"
if [ -f "$file" ]; then
offsetfile="$STATEDIR/offset$(echo $file | tr / .)"
if [ -s "$offsetfile" -a -r "$offsetfile" ]; then
if [[ $(wc -c < "$file") -lt $(tail -n 1 "$offsetfile") ]]; then
# assume the log is rotated by savelog(8)
# syslog-ng leaves old files here
if [ -e "$file.0" -a "$file.0" -nt "$file.1.gz" ]; then
debug "Running logtail on rotated: $file.0"
$LOGTAIL -f "$file.0" -o "$offsetfile" $LOGTAIL_OPTS > \
$TMPDIR/logoutput/$(basename "$file") 2>&1 \
|| error "Could not run logtail or save output"
rm -f "$offsetfile" \
|| error "Could not remove $offsetfile"
# assume the log is rotated by logrotate(8)
# should also probably check if file is still fresh
elif [ -e "$file.1" ]; then
debug "Running logtail on rotated: $file.1"
$LOGTAIL -f "$file.1" -o "$offsetfile" $LOGTAIL_OPTS > \
$TMPDIR/logoutput/$(basename "$file") 2>&1 \
|| error "Could not run logtail or save output"
rm -f "$offsetfile" \
|| error "Could not remove $offsetfile"
fi
fi
fi
debug "Running logtail: $file"
$LOGTAIL -f "$file" -o "$offsetfile" $LOGTAIL_OPTS \
>> $TMPDIR/logoutput/$(basename "$file") 2>&1 \
|| error "Could not run logtail or save output"
else
echo "E: File could not be read: $file" >> $TMPDIR/errors \
|| error "Could not output to $TMPDIR/errors Disk Full?"
fi
}
# Show all the cli options to our users.
usage() {
debug "usage: Printing usage and exiting"
cat<<EOF
usage: logcheck [-c CFG] [-d] [-h] [-H HOST] [-l LOG] [-L CFG] [-m MAIL] [-o]
[-r DIR] [-s|-p|-w] [-R] [-S DIR] [-t] [-T] [-u]
-c CFG = overrule default configuration file
-d = debug mode
-h = print this usage guide and exit
-H HOST = use this hostname for the mail
-l LOG = run logfile through logcheck
-L CFG = overrule default logfiles list
-m MAIL = email the report to recipient
-o = stdout mode, not sending mail
-p = runlevel "paranoid"
-r DIR = overrule default rules directory
-R = adds Reboot: to email subject
-s = runlevel "server"
-S DIR = overrule default state directory
-t = testing mode
-T = do not remove the TMPDIR
-u = enable syslog-summary
-v = print version
-w = runlevel "workstation"
EOF
}
# Check the commandline options for a change to the config file option
while getopts $GETOPTS opt; do
case "$opt" in
c)
debug "Setting CONFFILE to $OPTARG"
CONFFILE="$OPTARG"
;;
d)
LOGCHECKDEBUG=1
debug "Turning debug mode on"
;;
h)
usage
exit 0
;;
T)
debug "Setting NOCLEANUP to 1"
NOCLEANUP=1
;;
v)
echo "logcheck $VERSION"
exit 0
;;
\?)
usage
exit 1
;;
esac
done
# Now reset $OPTIND to 1
OPTIND=1
debug "Sourcing - $CONFFILE"
# Now source the config file - before things that should not be changed
if [ -r $CONFFILE ]; then
. $CONFFILE
fi
# Setup the compatibility for the old style of setting $INTRO
# And handle it being set to ""
if [ -z "$INTRO" ]; then
INTRO=1
else
if [ "$INTRO" = "no" ]; then
INTRO=0
elif [ "$INTRO" = "yes" ]; then
INTRO=1
fi
fi
# Use sort -u or -k 1,3 -s
if [ $SORTUNIQ -eq 1 ];then
SORT="sort -u"
else
SORT="sort -k 1,3 -s"
fi
# Hostname either fully qualified or not.
if [ $FQDN -eq 1 ]; then
HOSTNAME="$(hostname --fqdn)" > /dev/null 2>&1
else
HOSTNAME="$(hostname --short)" > /dev/null 2>&1
fi
# Now check for the other options
while getopts $GETOPTS opt; do
case "$opt" in
H)
debug "Setting HOSTNAME to $OPTARG"
HOSTNAME="$OPTARG"
;;
l)
debug "Setting LOGFILE to $OPTARG"
LOGFILE="$OPTARG"
;;
L)
debug "Setting LOGFILES_LIST to $OPTARG"
LOGFILES_LIST="$OPTARG"
;;
m)
debug "Setting SENDMAILTO to $OPTARG"
SENDMAILTO="$OPTARG"
;;
o)
debug "Setting MAILOUT to 1"
MAILOUT="1"
;;
p)
debug "Setting REPORTLEVEL to paranoid"
REPORTLEVEL="paranoid"
;;
r)
debug "Setting RULEDIR to $OPTARG"
RULEDIR="$OPTARG"
;;
R)
debug "Setting REBOOT to 1"
REBOOT=1
;;
s)
debug "Setting REPORTLEVEL to server"
REPORTLEVEL="server"
;;
S)
debug "Setting STATEDIR to $OPTARG"
STATEDIR="$OPTARG"
;;
u)
debug "Setting SYSLOGSUMMARY to 1"
SYSLOGSUMMARY="1"
;;
t)
debug "Setting LOGTAIL_OPTS to -t"
LOGTAIL_OPTS=' -t'
;;
w)
debug "Setting REPORTLEVEL to workstation"
REPORTLEVEL="workstation"
;;
\?)
usage
exit 1
;;
esac
done
debug "Finished getopts $GETOPTS"
shift `expr $OPTIND - 1`
if [ $REPORTLEVEL = "workstation" ]; then
REPORTLEVELS="workstation server paranoid"
elif [ $REPORTLEVEL = "server" ]; then
REPORTLEVELS="server paranoid"
elif [ $REPORTLEVEL = "paranoid" ]; then
REPORTLEVELS="paranoid"
else
error "REPORTLEVEL is set to an unknown value" "noclean"
fi
trap 'cleanup' 0
[ -d $LOCKDIR ] || error "lock dir does not exist: $LOCKDIR"
debug "Trying to get lockfile: $LOCKFILE.lock"
if [ $HAVE_LOCKFILE_PROGS == 1 ]; then
$LOCKFILE_CREATE --retry 1 $LOCKFILE > /dev/null 2>&1
else
$LOCKFILE_CREATE $LOCKFILE.lock > /dev/null 2>&1
fi
if [ $? -eq 1 ]; then
trap 0
error "Failed to get lockfile: $LOCKFILE.lock" "noclean"
else
debug "Running ($LOCKFILE_TOUCH) $LOCKFILE.lock"
if [ $HAVE_LOCKFILE_PROGS == 1 ]; then
$LOCKFILE_TOUCH $LOCKFILE &
LOCK="$!"
else
$LOCKFILE_TOUCH $LOCKFILE.lock
LOCK=""
fi
fi
# Create the secure temporary directory or exit
TMPDIR=$(mktemp -d -p /tmp logcheck.XXXXXX) \
|| TMPDIR=$(mktemp -d -p /var/tmp logcheck.XXXXXX) \
|| error "Could not create temporary directory"
# Now clean the rulefiles in the directories
cleanrules "$RULEDIR/cracking.d" $TMPDIR/cracking
cleanrules "$RULEDIR/violations.d" $TMPDIR/violations
cleanrules "$RULEDIR/violations.ignore.d" $TMPDIR/violations-ignore
# Now clean the ignore rulefiles for the report levels
for level in $REPORTLEVELS; do
cleanrules "$RULEDIR/ignore.d.$level" $TMPDIR/ignore
done
# The following cracking.ignore directory will only be used if
# $SUPPORT_CRACKING_IGNORE is set to 1 in the configuration file.
# This is *only* for local admin use.
if [ $SUPPORT_CRACKING_IGNORE -eq 1 ]; then
cleanrules "$RULEDIR/cracking.ignore.d" $TMPDIR/cracking-ignore
fi
# Get the list of log files from config file
# Handle log rotation correctly, idea taken from Wiktor Niesiobedzki.
mkdir $TMPDIR/logoutput \
|| error "Could not mkdir for log files"
if [ ! $LOGFILE ] && [ -r $LOGFILES_LIST ]; then
for file in $(egrep --text -v "(^#|^[[:space:]]*$)" $LOGFILES_LIST); do
logoutput "$file"
done
elif [ $LOGFILE ]; then
if [ -f $LOGFILE ] && [ -r $LOGFILE ]; then
logoutput "$LOGFILE"
else
error "$LOGFILE don't exist or we do not have permissions to read it"
fi
elif [ -r $LOGFILE_FALLBACK ]; then
logoutput "$LOGFILE_FALLBACK"
else
error "Gave up no Logfile exist or we do not have permissions to read it"
fi
# First sort the logs to remove duplicate lines (from different logfiles with
# the same lines) and reduce CPU and memory usage afterwards.
debug "Sorting logs"
$SORT $TMPDIR/logoutput/* | sed -e 's/[[:space:]]\+$//' | cat \
> $TMPDIR/logoutput-sorted \
|| error "Could not output to $TMPDIR/logoutput-sorted Disk Full?"
# See if the tmp file exists and actually has data to check,
# if it doesn't we should erase it and exit as our job is done.
if [ ! -s $TMPDIR/logoutput-sorted -a ! -f $TMPDIR/errors ]; then
debug "Nothing to report"
exit 0
elif [ ! -s $TMPDIR/logoutput-sorted -a -f $TMPDIR/errors ]; then
error "$(cat $TMPDIR/errors)"
fi
if [ $INTRO -eq 1 ]; then
debug "Setting the Intro"
setintro
else
debug "Not setting the Intro"
fi
if [ -f $TMPDIR/errors ]; then
{
cat<<EOF
$(cat $TMPDIR/errors)
EOF
} >> $TMPDIR/report \
|| error "Could not output to $TMPDIR/report Disk Full?"
fi
# Check for blatant cracking attempts
if [ -d $TMPDIR/cracking ]; then
if [ $SUPPORT_CRACKING_IGNORE -eq 1 ]; then
debug "Checking for security alerts and using cracking-ignore"
if [ -d $TMPDIR/cracking-ignore ]; then
greplogoutput $TMPDIR/cracking "$ATTACKSUBJECT" \
$TMPDIR/cracking-ignore && ATTACK="1"
fi
else
debug "Checking for security alerts"
greplogoutput $TMPDIR/cracking "$ATTACKSUBJECT" \
&& ATTACK="1"
fi
fi
# Check for security events
if [ -d $TMPDIR/violations ]; then
debug "Checking for security events"
rm -f $TMPDIR/checked
if [ $ATTACK -eq 1 ]; then
greplogoutput $TMPDIR/violations "$SECURITYSUBJECT" \
$TMPDIR/violations-ignore $TMPDIR/cracking && SECURITY="1"
else
greplogoutput $TMPDIR/violations "$SECURITYSUBJECT" \
$TMPDIR/violations-ignore && SECURITY="1"
fi
fi
# Do reverse grep on patterns we want to ignore
if [ -d $TMPDIR/ignore ]; then
debug "Checking for system events"
cp $TMPDIR/logoutput-sorted $TMPDIR/checked \
|| error "Could not copy $TMPDIR/logoutput-sorted to $TMPDIR/checked"
cleanchecked $TMPDIR/ignore
if [ -s $TMPDIR/checked ]; then
debug "Removing alerts from system events"
cleanchecked $TMPDIR/cracking
fi
if [ -s $TMPDIR/checked ]; then
debug "Removing violations from system events"
cleanchecked $TMPDIR/violations
fi
report "$EVENTSSUBJECT" && SYSTEM="1"
fi
# Add warnings to report
if [ -f $TMPDIR/warnings ]; then
printheader "Logcheck Warnings" >> $TMPDIR/report \
|| error "Cannot append warnings to report. Disk Full?"
cat $TMPDIR/warnings >> $TMPDIR/report && echo >> $TMPDIR/report \
|| error "Cannot append warnings to report. Disk full?"
fi
# Include the footer if present.
if [ $INTRO -eq 1 ]; then
debug "Setting the footer text"
setfooter
else
debug "Not setting the footer text"
fi
# If there are results, mail them to sysadmin
if [ $ATTACK -eq 1 ]; then
sendreport "$ATTACKSUBJECT"
elif [ $SECURITY -eq 1 ]; then
sendreport "$SECURITYSUBJECT"
elif [ $SYSTEM -eq 1 ]; then
sendreport "$EVENTSSUBJECT"
fi
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