Virus:Additional Signatures

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#!/bin/sh
# script to install Bill Landry's <bill at inetmsg dot com> scripts
# for maintaining Sanesecurity signatures for clamav
# Copyright (C) 2009 Eric Shubert <ejs@shubes.net>
########################################################################
#  4/30/10 Amendments to install on SME Server - commented with SME
#  9/25/09 Totally refactored by Eric Shubert <ejs@shubes.net>
#  3/22/09 Originally Written by Jake Vickers <jake@qmailtoaster.com>
#
WEB_LOC=http://www.inetmsg.com/pub
PKG_NAME=clamav-unofficial-sigs
PKG_TGZ=$PKG_NAME.tar.gz
# SME = changed variable name throughout and directory name
SANE_DIR=/opt/sanesecurity

########################################################################
# initialization processing
#
a1_initialization(){

# Make sure we're root
if [ "$UID" != "0" ]; then
  echo "Error: You are not logged in as root, please su -"
  exit 1
fi 

# remove files from previous version
# SME - changed cron job from .sh to .cron, added removal of .sh script and redundant dbs
rm -rf       /etc/unofficial-clamav-sigs.conf \
 /etc/cron.hourly/unofficial-clamav-sigs.cron \
 /usr/unofficial-dbs \
 /usr/bin/unofficial-clamav-sigs.sh \
 /var/clamav/*.ndb \
 /var/clamav/*.ldb \
 /var/clamav/*.ftm \
 /var/clamav/*.hdb 

# set a temp directory for the tar file. $$ is the current shell ID.
TEMP_DIR=$(tempfile 2>/dev/null) || TEMP_DIR=/tmp/$me.$$ 

# make sure the temp directory is deleted when we're done
trap "rm -rf $TEMP_DIR" 0 1 2 5 15
}

###################################################################
## download and unpack current package
#
a3_download_unpack(){

rm -rf $TEMP_DIR
mkdir -p $TEMP_DIR
echo "$me $myver - getting latest version of $PKG_NAME ..."

wget -O $TEMP_DIR/$PKG_TGZ $WEB_LOC/$PKG_TGZ

if [ "$?" != "0" ]; then
  echo "$me - unable to reach $WEB_LOC/$PKG_TGZ, please try again later."
  exit 1
fi

tar -xz -C $TEMP_DIR -f $TEMP_DIR/$PKG_TGZ
}

###################################################################
## install the package files
#
a5_install_files(){

# SME - Added make directories
mkdir -p $SANE_DIR/bin
mkdir -p $SANE_DIR/etc
mkdir -p $SANE_DIR/man

# install the shell script
cp $TEMP_DIR/$PKG_NAME-*/$PKG_NAME.sh $SANE_DIR/bin/$PKG_NAME.sh
chmod 755 $SANE_DIR/bin/$PKG_NAME.sh
ln -sf ../..$SANE_DIR/bin/$PKG_NAME.sh /usr/sbin/$PKG_NAME.sh

# install the configuration file
# SME - removed substitutions for clamd reload - reload_opt and reload_dbs
# SME - removed substitution to change default dbs download directory
# SME - added substitution to set clamd_socket location
# SME - removed substitution to silence information output - but see cron job below

cat $TEMP_DIR/$PKG_NAME-*/$PKG_NAME.conf | sed \
    -e "s|/var/lib/clamav|/var/clamav|" \
    -e "/#clamd_socket=/aclamd_socket=\"/var/clamav/clamd.socket\"" \
    -e "s|enable_logging=\"no\"|enable_logging=\"yes\"|" \
    -e "s|log_file_path=\"/var/log\"|log_file_path=\"/var/log/clamav\"|" \
    -e "s|log_file_name=\"clamav-unofficial|log_file_name=\"unofficial|" \
    -e "s|configuration_complete=\"no\"|configuration_complete=\"yes\"|" \
    > $SANE_DIR/etc/$PKG_NAME.conf
ln -sf ../..$SANE_DIR/etc/$PKG_NAME.conf /etc/$PKG_NAME.conf

# install the man page
gzip $TEMP_DIR/$PKG_NAME-*/$PKG_NAME.8
cp $TEMP_DIR/$PKG_NAME-*/$PKG_NAME.8.gz $SANE_DIR/man/$PKG_NAME.8.gz
ln -sf ../../../..$SANE_DIR/man/$PKG_NAME.8.gz /usr/share/man/man8/$PKG_NAME.8.gz

# install the cron job (cannot symlink cron jobs)
grep "^#" $TEMP_DIR/$PKG_NAME-*/$PKG_NAME-cron \
    > /etc/cron.d/$PKG_NAME-cron
# SME - added redirect stdout to null device and stderr to stdout so we only get error output from cron job
echo -e "\n25 * * * * root /usr/sbin/$PKG_NAME.sh >/dev/null 2>&1" \
    >>/etc/cron.d/$PKG_NAME-cron

# install the logrotate spec
cat $TEMP_DIR/$PKG_NAME-*/$PKG_NAME-logrotate | sed \
    -e "s|clamav-unofficial|clamav/unofficial|" \
    > $SANE_DIR/etc/$PKG_NAME-logrotate
ln -sf ../..$SANE_DIR/etc/$PKG_NAME-logrotate /etc/logrotate.d/$PKG_NAME-logrotate

# install documentation files
# SME - removed superfluous $PKG_NAME sub-directory below $SANE_DIR/doc
mkdir -p $SANE_DIR/doc
mv $TEMP_DIR/$PKG_NAME-*/CHANGELOG $SANE_DIR/doc/CHANGELOG
mv $TEMP_DIR/$PKG_NAME-*/INSTALL   $SANE_DIR/doc/INSTALL
mv $TEMP_DIR/$PKG_NAME-*/LICENSE   $SANE_DIR/doc/LICENSE
mv $TEMP_DIR/$PKG_NAME-*/README    $SANE_DIR/doc/README
}

###################################################################
## main script execution begins here
#
me=${0##*/}
myver=v0.3.1-1 

a1_initialization

a3_download_unpack

a5_install_files

echo "$PKG_NAME installed successfully"
echo "clamav database files provided by Sanesecurity will be updated within an hour,"
echo " and continuously after that."
exit 0

Virus:Additional Signatures

Contents

Anti Virus - Additional Signatures

Introduction

Installation

Operation

Signature Databases

Old Installation Notes

References

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	Note:
	If removing databases from the download lists, don't forget to also delete them from /var/clamav and /usr/unofficial_dbs if they have been downloaded previously and exist

	Note:
	Adding unofficial signatures increases memory usage. To increase the clamd memory limit try setting MemLimit to a value greater than 300000000 (see here for reference). Since clamav-0.96 and smeserver-clamav-2.0.0-8 the default MemLimit for clamd has been 600000000 and should be sufficient.