A bug in mcafee-autoupdate ?
Kai Wang
kwang at UCALGARY.CA
Wed Aug 18 20:57:24 IST 2004
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Thanks, Tony. This version works.<br>
<br>
Kai<br>
<br>
Tony Finch wrote:<br>
<blockquote type="cite"
cite="midE1BxVyF-00010y-00 at chiark.greenend.org.uk">
<pre wrap="">Julian Field <a class="moz-txt-link-rfc2396E" href="mailto:mailscanner at ECS.SOTON.AC.UK"><mailscanner at ECS.SOTON.AC.UK></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Can some other McAfee users comment on this please?
</pre>
</blockquote>
<pre wrap=""><!---->
It's the result of upgrading McAfee in place without removing the old
version first, so mcafee-autoupdate thinks it is already initialized.
The version below should re-initialize itself in this situation.
Tony.
--
f.a.n.finch <a class="moz-txt-link-rfc2396E" href="mailto:dot at dotat.at"><dot at dotat.at></a> <a class="moz-txt-link-freetext" href="http://dotat.at/">http://dotat.at/</a>
MULL OF KINTYRE TO ARDNAMURCHAN POINT: VARIABLE BECOMING NORTH OR NORTHEAST, 3
OR 4. SHOWERS. GOOD. SLIGHT.
#!/bin/sh -e
#
# Update the McAfee data files.
#
# $Cambridge: hermes/conf/build/bin/uvscan-update,v 1.52 2004/08/18 19:12:02 fanf2 Exp $
# $PREFIX is the directory where the uvscan binary is (NOT a symlink to
# the binary), which is where it looks for its dat files. You may run
# uvscan via a symlink to this place (e.g. from /usr/local/bin/uvscan)
# and it will still look for the dat files here. If uvscan's library
# dependencies can be found in a standard place (e.g. /usr/local/lib)
# then you don't need a wrapper script to set LD_LIBRARY_PATH before
# running it.
#
# The dat files are installed in a subdirectory of $DATDIR named
# according to their version number, with symlinks from $PREFIX into
# the subdirectory via a current link. The current link is updated
# without locking on the assumption that this is sufficiently unlikely
# to cause a problem.
# defaults
OPTS=""
PREFIX=/opt/uvscan
FTPDIR=<a class="moz-txt-link-freetext" href="http://download.nai.com/products/datfiles/4.x/nai">http://download.nai.com/products/datfiles/4.x/nai</a>
RETRIES=1
INTERVAL=300
# handle the command line
usage () {
echo "usage: $0 [-dfrtv] [-Rnnn] [-Innn] [proxy] [prefix]"
echo " -d delete old files"
echo " -e get extra.dat"
echo " -f force update"
echo " -r show README"
echo " -t timestamp output"
echo " -v verbose"
echo " -R number of retries"
echo " -I retry interval"
echo " proxy URL of FTP/HTTP proxy server"
echo " prefix uvscan installation directory"
exit 1
}
case $# in
[012345])
: ok
;;
*) usage
;;
esac
for arg in "$@"
do
case $arg in
-I*) INTERVAL=${arg#-I}
;;
-R*) RETRIES=${arg#-R}
;;
-*) OPTS=$arg
;;
/*) PREFIX=$arg
;;
http:) ftp_proxy=$arg
http_proxy=$arg
export ftp_proxy
export http_proxy
;;
*) usage
;;
esac
done
case $OPTS in
*[!-dfrtv]*)
usage
esac
option () {
case $OPTS in
-*$1*) eval $2=yes
;;
*) eval $2=no
;;
esac
}
option d DELETE
option e EXTRA
option f FORCE
option r README
option t TIME
option v VERBOSE
case $FORCE in
yes) VERBOSE=yes
esac
# look for binaries and libraris in plausible places
PATH=$PREFIX:/usr/local/bin:/usr/bin:/bin
# this is only necessary for broken setups
LD_LIBRARY_PATH=$PREFIX
export PATH LD_LIBRARY_PATH
# where this script finds things
DATDIR=$PREFIX/datfiles
DATFILES="clean.dat extra.dat internet.dat names.dat scan.dat"
LINKNAME=current
LINKREL=datfiles/$LINKNAME
# wrapper functions for echo etc.
timestamp () {
case $TIME in
yes) date "+%Y-%m-%d %H:%M:%S "
esac
}
say () {
case $VERBOSE in
yes) echo "`timestamp`$*"
esac
}
run () {
say "> $*"
"$@"
}
testeval () {
# ugly workaround
say "> $*"
set +e
eval "$*"
ret=$?
set -e
return $ret
}
is () {
test "$@" 2>/dev/null
}
say Starting $0
say DELETE=$DELETE
say FORCE=$FORCE
say README=$README
say TIME=$TIME
say VERBOSE=$VERBOSE
say RETRIES=$RETRIES
say INTERVAL=$INTERVAL
say PROXY=$ftp_proxy
say PREFIX=$PREFIX
# check directory setup is correct
for link in $LINKREL $DATFILES
do
if ! is -h $PREFIX/$link
then
say $PREFIX/$link is not set up
INIT=yes
fi
done
if ! is -d $DATDIR
then
say $DATDIR is not set up
INIT=yes
fi
case $INIT in
yes)
VERBOSE=yes
say Doing initial setup of $0
run mkdir -p $DATDIR
esac
run cd $DATDIR
getver () {
match="[0-9][0-9][0-9][0-9]"
err="version.err"
cmd="$1" out="$2" txt="$3"
if testeval "$cmd 2>$err 1>&2"
then
VER=`cat $out | sed "/^$txt\($match\).*$/!d;s//\1/;q"`
case $VER in
$match) run rm -f $out $err
return
esac
fi
cat $err
VER=UNKNOWN
run rm -f $out $err
}
# work out latest dat version
try=$RETRIES
while :
do getver "wget --tries=$try --waitretry=$INTERVAL --passive-ftp $FTPDIR/update.ini" update.ini "DATVersion="
VERSION=$VER
case $VERSION in
UNKNOWN)
if ! try=`expr $try - 1`
then break
fi
say Problem with McAfee datfile update from $FTPDIR
say Sleeping for $INTERVAL seconds before retrying
sleep $INTERVAL
;;
*) break
;;
esac
done
# work out installed dat version
getver "uvscan --version" version.err "Virus data file v"
PREVIOUS=$VER
case $FORCE in
yes) say Forced update from $PREVIOUS
PREVIOUS=0000
;;
*) if is $VERSION -eq $PREVIOUS
then say Already have $VERSION
run exit 0
fi
esac
VERBOSE=yes
say Installed dat file is $PREVIOUS
say Latest dat file is $VERSION
if is $VERSION = UNKNOWN
then say Problem with McAfee datfile update from $FTPDIR
run exit 1
elif is $VERSION -lt $PREVIOUS
then say Remote version $VERSION older than installed version $PREVIOUS
run exit 1
elif is -d $VERSION
then say Cleaning away $VERSION directory
run rm -rf $VERSION
fi
retry () {
echo "$OUT"
say Fetch or test failed -- removing bad McAfee data files
run cd $DATDIR
run rm -rf $VERSION
if ! try=`expr $try - 1`
then say Giving up
run exit 1
fi
say Sleeping for $INTERVAL seconds before retrying
sleep $INTERVAL
continue
}
try=$RETRIES
while :
do
# fetch and extract dat files
TARFILE=dat-$VERSION.tar
run mkdir $VERSION
run cd $VERSION
run chmod 700 .
if ! run wget --tries=$try --waitretry=$INTERVAL --passive-ftp --progress=dot:mega $FTPDIR/$TARFILE
then retry
fi
run tar xvf $TARFILE
run chmod 644 *
run chmod 755 .
# verify the contents
CMD="uvscan --version --dat ."
say "> $CMD"
if ! OUT=`$CMD 2>&1`
then retry
else break
fi
done
echo "$OUT"
say Update OK
# show information on this update?
case $README in
yes) run sed 's/[[:cntrl:]]//g
1,/^====================/d
/^====================/,/^NEW VIRUSES DETECTED/d
/^UNDERSTANDING VIRUS NAMES/,$d
s/^/# /;/@MM/s/$/ <--/' readme.txt
esac
# remove some crap
run rm -f *.diz *.exe *.ini *.lst *.tar *.txt
# do remaining part of initial setup
case $INIT in
yes) for file in $DATFILES
do
run rm -f $PREFIX/$file
run ln -s $LINKREL/$file $PREFIX/$file
done
esac
# update the current version link
run cd $DATDIR
run ln -s $VERSION $VERSION/$LINKNAME
run mv $VERSION/$LINKNAME .
# maybe delete old dat files
case $DELETE in
yes) run cd $DATDIR
run rm -rf $PREVIOUS
esac
say Completed OK
run exit 0
# done
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