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#!/bin/sh
# This script freely provided by Bill Landry (unofficialsigs@gmail.com).
# Comments, suggestions, and recommendations for improving this script
# are always welcome.
#
# Script updates can be found at: http://sourceforge.net/projects/unofficial-sigs
#
# License: BSD (Berkeley Software Distribution)
################################################################################
# #
# THERE ARE NO USER CONFIGURABLE OPTIONS IN THIS SCRIPT #
# * * * #
# ALL CONFIGURATION OPTIONS ARE LOCATED IN THE INCLUDED CONFIGURATION FILE #
# #
################################################################################
default_config="/etc/clamav-unofficial-sigs.conf"
version="v3.7.2 (updated 2013-08-25)"
output_ver="
`basename $0` $version
"
usage="
ClamAV Unofficial Signature Databases Update Script - $version
Usage: `basename $0` [OPTION] [PATH|FILE]
-b DEPRECATED - Consider using -w instead, it supports
the newer ClamAV signature whitelist funtionality.
----------------------------------------------------------
Add a bypass signature entry to local.ign in order to
temporarily resolve a false-positive issue with a specific
third-party signature. The script added local.ign entries
will automatically be removed if the original signature is
either modified or removed from the third-party database.
-c Direct script to use a specific configuration file
e.g.: '-c /path/to/`basename "$default_config"`'.
-d Decode a third-party signature either by signature name
(e.g: Sanesecurity.Junk.15248) or hexadecimal string.
This flag will 'NOT' decode image signatures.
-e Hexadecimal encode an entire input string that can be
used in any '*.ndb' signature database file.
-f Hexadecimal encode a formatted input string containing
signature spacing fields '{}, (), *', without encoding
the spacing fields, so that the encoded signature can
be used in any '*.ndb' signature database file.
-g GPG verify a specific Sanesecurity database file
e.g.: '-g filename.ext' (do not include file path).
-h Display this script's help and usage information.
-i Output system and configuration information for
viewing or possible debugging purposes.
-m Make a signature database from an ascii file containing
data strings, with one data string per line. Additional
information is provided when using this flag.
-r Remove the clamav-unofficial-sigs script and all of
its associated files and databases from the system.
-s Clamscan integrity test a specific database file
e.g.: '-s filename.ext' (do not include file path).
-t If HAM directory scanning is enabled in the script's
configuration file, then output names of any third-party
signatures that triggered during the HAM directory scan.
-v Output script version and date information.
-w Adds a signature whitelist entry in the newer ClamAV IGN2
format to 'my-whitelist.ign2' in order to temporarily resolve
a false-positive issue with a specific third-party signature.
Script added whitelist entries will automatically be removed
if the original signature is either modified or removed from
the third-party signature database.
Alternative to using '-c': Place config file in /etc ($default_config)
"
# Function to handle general response if script cannot find the config file in /etc.
no_default_config () {
if [ ! -s "$default_config" ] ; then
echo ""
echo "Cannot find your configuration file - place a copy in /etc and try again..."
echo ""
echo " e.g.: $default_config"
echo ""
exit
fi
. "$default_config"
echo ""
}
# Function to support user config settings for applying file and directory access permissions.
perms () {
if [ -n "$clam_user" -a -n "$clam_group" ] ; then
"${@:-}"
fi
}
# Take input from the commandline and process.
while getopts 'bc:defg:himrs:tvw' option ; do
case $option in
b) no_default_config
echo "Input a third-party signature name that you wish to bypass due to false-positives"
echo "and press enter (do not include '.UNOFFICIAL' in the signature name nor add quote"
echo "marks to any input string):"
echo ""
read input
if [ -n "$input" ]
then
cd "$clam_dbs"
input=`echo "$input" | tr -d "'" | tr -d '"'`
file_sig=`grep -n "$input:" *.ndb`
sig_ign=`echo "$file_sig" | cut -d ":" -f-3`
if [ -n "$sig_ign" ]
then
if ! grep "$sig_ign" local.ign > /dev/null 2>&1
then
cp -f local.ign "$config_dir" 2>/dev/null
echo "$sig_ign" | tr -d "\r" >> "$config_dir/local.ign"
echo "$file_sig" | tr -d "\r" >> "$config_dir/monitor-ign.txt"
if clamscan --quiet -d "$config_dir/local.ign" "$config_dir/scan-test.txt"
then
if rsync -pcqt $config_dir/local.ign $clam_dbs
then
perms chown $clam_user:$clam_group local.ign
chmod 0644 local.ign "$config_dir/monitor-ign.txt"
$reload_opt
echo ""
echo "Signature '$input' has been added to the local.ign signature bypass"
echo "file and databases have been reloaded. The script will track any changes to the"
echo "offending third-party signature and will automatically remove the signature bypass"
echo "entry if either the signature is modified or removed from the third-party database."
else
echo ""
echo "Failed to successfully update local.ign file - SKIPPING."
fi
else
echo ""
echo "Clamscan reports local.ign database integrity is bad - SKIPPING."
fi
else
echo ""
echo "Signature '$input' already exists in local.ign - no action taken."
fi
else
echo ""
echo "Signature '$input' could not be found."
echo ""
echo "This script will only create a bypass entry in local.ign for ClamAV"
echo "'UNOFFICIAL' third-Party signatures as found in the *.ndb databases."
fi
else
echo "No input detected - no action taken."
fi
echo ""
exit
;;
c) conf_file="$OPTARG"
;;
d) no_default_config
echo "Input a third-party signature name to decode (e.g: Sanesecurity.Junk.15248) or"
echo "a hexadecimal encoded data string and press enter (do not include '.UNOFFICIAL'"
echo "in the signature name nor add quote marks to any input string):"
echo ""
read input
input=`echo "$input" | tr -d "'" | tr -d '"'`
echo ""
if `echo "$input" | grep "\." > /dev/null`
then
cd "$clam_dbs"
sig=`grep "$input:" *.ndb`
if [ -n "$sig" ]
then
db_file=`echo "$sig" | cut -d ':' -f1`
echo "$input found in: $db_file"
echo "$input signature decodes to:"
echo ""
echo "$sig" | cut -d ":" -f5 | perl -pe 's/([a-fA-F0-9]{2})|(\{[^}]*\}|\([^)]*\))/defined $2 ? $2 : chr(hex $1)/eg'
else
echo "Signature '$input' could not be found."
echo ""
echo "This script will only decode ClamAV 'UNOFFICIAL' third-Party,"
echo "non-image based, signatures as found in the *.ndb databases."
fi
else
echo "Here is the decoded hexadecimal input string:"
echo ""
echo "$input" | perl -pe 's/([a-fA-F0-9]{2})|(\{[^}]*\}|\([^)]*\))/defined $2 ? $2 : chr(hex $1)/eg'
fi
echo ""
exit
;;
e) no_default_config
echo "Input the data string that you want to hexadecimal encode and then press enter. Do not include"
echo "any quotes around the string unless you want them included in the hexadecimal encoded output:"
echo ""
read input
echo ""
echo "Here is the hexadecimal encoded input string:"
echo ""
echo "$input" | perl -pe 's/(.)/sprintf("%02lx", ord $1)/eg'
echo ""
exit
;;
f) no_default_config
echo "Input a formated data string containing spacing fields '{}, (), *' that you want to hexadecimal"
echo "encode, without encoding the spacing fields, and then press enter. Do not include any quotes"
echo "around the string unless you want them included in the hexadecimal encoded output:"
echo ""
read input
echo ""
echo "Here is the hexadecimal encoded input string:"
echo ""
echo "$input" | perl -pe 's/(\{[^}]*\}|\([^)]*\)|\*)|(.)/defined $1 ? $1 : sprintf("%02lx", ord $2)/eg'
echo ""
exit
;;
g) no_default_config
db_file=`echo "$OPTARG" | awk -F '/' '{print $NF}'`
if [ -s "$ss_dir/$db_file" ]
then
echo "GPG signature testing database file: $ss_dir/$db_file"
echo ""
if ! gpg --trust-model always -q --no-default-keyring --homedir $gpg_dir --keyring $gpg_dir/ss-keyring.gpg \
--verify $ss_dir/$db_file.sig $ss_dir/$db_file
then
gpg --always-trust -q --no-default-keyring --homedir $gpg_dir --keyring $gpg_dir/ss-keyring.gpg \
--verify $ss_dir/$db_file.sig $ss_dir/$db_file
fi
else
echo "File '$db_file' cannot be found or is not a Sanesecurity database file."
echo "Only the following Sanesecurity and OITC databases can be GPG signature tested:"
echo "$ss_dbs"
echo "Check the file name and try again..."
fi
echo ""
exit
;;
h) echo "$usage"
exit
;;
i) no_default_config
echo "*** SCRIPT VERSION ***"
echo "`basename $0` $version"
echo ""
echo "*** SYSTEM INFORMATION ***"
uname=`which uname`
$uname -a
echo ""
echo "*** CLAMSCAN LOCATION & VERSION ***"
clamscan=`which clamscan`
echo "$clamscan"
$clamscan --version | head -1
echo ""
echo "*** RSYNC LOCATION & VERSION ***"
rsync=`which rsync`
echo "$rsync"
$rsync --version | head -1
echo ""
echo "*** CURL LOCATION & VERSION ***"
curl=`which curl`
echo "$curl"
$curl --version | head -1
echo ""
echo "*** GPG LOCATION & VERSION ***"
gpg=`which gpg`
echo "$gpg"
$gpg --version | head -1
echo ""
echo "*** SCRIPT WORKING DIRECTORY INFORMATION ***"
ls -ld $work_dir
echo ""
ls -lR $work_dir | grep -v total
echo ""
echo "*** CLAMAV DIRECTORY INFORMATION ***"
ls -ld $clam_dbs
echo "---"
ls -l $clam_dbs | grep -v total
echo ""
echo "*** SCRIPT CONFIGURATION SETTINGS ***"
egrep -v "^#|^$" $default_config
echo ""
exit
;;
m) no_default_config
echo "
The '-m' script flag provides a way to create a ClamAV hexadecimal signature database (*.ndb) file
from a list of data strings stored in a clear-text ascii file, with one data string entry per line.
- Hexadecimal encoding can be either 'full' or 'formatted' on a per line basis:
Full line encoding should be used if there are no formatted spacing entries [{}, (), *]
included on the line. Prefix unformatted lines with: '-:' (no quote marks).
Example:
-:This signature contains no formatted spacing fields
Encodes to:
54686973207369676e617475726520636f6e7461696e73206e6f20666f726d61747465642073706163696e67206669656c6473
Formatted line encoding should be used if there are user added spacing entries [{}, (), *]
included on the line. Prefix formatted lines with '=:' (no quote marks).
Example:
=:This signature{-10}contains several(25|26|27)formatted spacing*fields
Encodes to:
54686973207369676e6174757265{-10}636f6e7461696e73207365766572616c(25|26|27)666f726d61747465642073706163696e67*6669656c6473
Use 'full' encoding if you want to encode everything on the line [including {}, (), *] and 'formatted'
encoding if you want to encode everything on the line except the formatted character spacing fields.
The prefixes ('-:' and '=:') will be stripped from the line before hexadecimal encoding is done.
If no prefix is found at the beginning of the line, full line encoding will be done (default).
- It is assumed that the signatures will be created for email scanning purposes, thus the '4'
target type is used and full file scanning is enabled (see ClamAV signatures.pdf for details).
- Line numbering will be done automatically by the script.
" | sed 's/^ //g'
echo -n "Do you wish to continue? (y/n): "
read reply
if [ "$reply" = "y" -o "$reply" = "Y" ]
then
echo ""
echo -n "Enter the source file as /path/filename: "
read source
if [ -s "$source" ]
then
source_file=`basename "$source"`
echo ""
echo "What signature prefix would you like to use? For example: 'Phish.Domains'"
echo "will create signatures that looks like: 'Phish.Domains.1:4:*:HexSigHere'"
echo ""
echo -n "Enter signature prefix: "
read prefix
path_file=`echo "$source" | cut -d "." -f-1 | sed 's/$/.ndb/'`
db_file=`basename $path_file`
rm -f "$path_file"
total=`wc -l "$source" | cut -d " " -f1`
line_num=1
echo ""
cat "$source" | while read line ; do
line_prefix=`echo "$line" | awk -F ':' '{print $1}'`
if [ "$line_prefix" = "-" ]
then
echo "$line" | cut -d ":" -f2- | perl -pe 's/(.)/sprintf("%02lx", ord $1)/eg' | \
sed "s/^/$prefix\.$line_num:4:\*:/" >> "$path_file"
elif [ "$line_prefix" = "=" ] ; then
echo "$line" | cut -d ":" -f2- | perl -pe 's/(\{[^}]*\}|\([^)]*\)|\*)|(.)/defined \
$1 ? $1 : sprintf("%02lx", ord $2)/eg' | sed "s/^/$prefix\.$line_num:4:\*:/" >> "$path_file"
else
echo "$line" | perl -pe 's/(.)/sprintf("%02lx", ord $1)/eg' | sed "s/^/$prefix\.$line_num:4:\*:/" >> "$path_file"
fi
printf "Hexadecimal encoding $source_file line: $line_num of $total\r"
line_num=$(($line_num + 1))
done
else
echo ""
echo "Source file not found, exiting..."
echo ""
exit
fi
echo ""
echo ""
echo "Signature database file created at: $path_file"
if clamscan --quiet -d "$path_file" "$config_dir/scan-test.txt" 2>/dev/null
then
echo ""
echo "Clamscan reports database integrity tested good."
echo ""
echo -n "Would you like to move '$db_file' into '$clam_dbs' and reload databases? (y/n): "
read reply
if [ "$reply" = "y" -o "$reply" = "Y" ]
then
if ! cmp -s "$path_file" "$clam_dbs/$db_file"
then
if rsync -pcqt "$path_file" "$clam_dbs"
then
perms chown $clam_user:$clam_group "$clam_dbs/$db_file"
chmod 0644 "$clam_dbs/$db_file"
$reload_opt
echo ""
echo "Signature database '$db_file' was successfully implemented and ClamD databases reloaded."
else
echo ""
echo "Failed to add/update '$db_file', ClamD database not reloaded."
fi
else
echo ""
echo "Database '$db_file' has not changed - skipping"
fi
else
echo ""
echo "No action taken."
fi
else
echo ""
echo "Clamscan reports that '$db_file' signature database integrity tested bad."
fi
fi
echo ""
exit
;;
r) no_default_config
if [ -n "$pkg_mgr" -a -n "$pkg_rm" ]
then
echo " This script (clamav-unofficial-sigs) was installed on the system"
echo " via '$pkg_mgr', use '$pkg_rm' to remove the script"
echo " and all of its associated files and databases from the system."
echo ""
else
echo " Are you sure you want to remove the clamav-unofficial-sigs script and all of its"
echo -n " associated files, third-party databases, and work directories from the system? (y/n): "
read response
if [ "$response" = "y" -o "$response" = "Y" ]
then
if [ -s "$config_dir/purge.txt" ]
then
echo ""
for file in `cat $config_dir/purge.txt` ; do
rm -f -- "$file"
echo " Removed file: $file"
done
cron_file=`find /etc/ -name clamav-unofficial-sigs-cron`
if [ -s "$cron_file" ] ; then
rm -f "$cron_file"
echo " Removed file: $cron_file"
fi
log_rotate_file=`find /etc/ -name clamav-unofficial-sigs-logrotate`
if [ -s "$log_rotate_file" ] ; then
rm -f "$log_rotate_file"
echo " Removed file: $log_rotate_file"
fi
rm -f -- "$default_config" && echo " Removed file: $default_config"
rm -f -- "$0" && echo " Removed file: $0"
rm -rf -- "$work_dir" && echo " Removed script working directories: $work_dir"
echo ""
echo " The clamav-unofficial-sigs script and all of its associated files, third-party"
echo " databases, and work directories have been successfully removed from the system."
echo ""
else
echo " Cannot locate 'purge.txt' file in $config_dir."
echo " Files and signature database will need to be removed manually."
echo ""
fi
else
echo "$usage"
fi
fi
exit
;;
s) no_default_config
input=`echo "$OPTARG" | awk -F '/' '{print $NF}'`
db_file=`find $work_dir -name $input`
if [ -s "$db_file" ]
then
echo "Clamscan integrity testing: $db_file"
echo ""
if clamscan --quiet -d "$db_file" "$config_dir/scan-test.txt" ; then
echo "Clamscan reports that '$input' database integrity tested GOOD"
fi
else
echo "File '$input' cannot be found."
echo "Here is a list of third-party databases that can be clamscan integrity tested:"
echo ""
echo "Sanesecurity $ss_dbs""SecuriteInfo $si_dbs""MalwarePatrol $mbl_dbs"
echo "Check the file name and try again..."
fi
echo ""
exit
;;
t) no_default_config
if [ -n "$ham_dir" ]
then
if [ -s "$config_dir/whitelist.hex" ]
then
echo "The following third-party signatures triggered hits during the HAM Directory scan:"
echo ""
grep -h -f "$config_dir/whitelist.hex" "$work_dir"/*/*.ndb | cut -d ":" -f1
else
echo "No third-party signatures have triggered hits during the HAM Directory scan."
fi
else
echo "Ham directory scanning is not currently enabled in the script's configuration file."
fi
echo ""
exit
;;
v) echo "$output_ver"
exit
;;
w) no_default_config
echo "Input a third-party signature name that you wish to whitelist due to false-positives"
echo "and press enter (do not include '.UNOFFICIAL' in the signature name nor add quote"
echo "marks to the input string):"
echo ""
read input
if [ -n "$input" ]
then
cd "$clam_dbs"
input=`echo "$input" | tr -d "'" | tr -d '"'`
sig_full=`grep -H "$input:" *.ndb`
sig_name=`echo "$sig_full" | cut -d ":" -f2`
if [ -n "$sig_name" ]
then
if ! grep "$sig_name" my-whitelist.ign2 > /dev/null 2>&1
then
cp -f my-whitelist.ign2 "$config_dir" 2>/dev/null
echo "$sig_name" >> "$config_dir/my-whitelist.ign2"
echo "$sig_full" >> "$config_dir/tracker.txt"
if clamscan --quiet -d "$config_dir/my-whitelist.ign2" "$config_dir/scan-test.txt"
then
if rsync -pcqt $config_dir/my-whitelist.ign2 $clam_dbs
then
perms chown $clam_user:$clam_group my-whitelist.ign2
chmod 0644 my-whitelist.ign2 "$config_dir/monitor-ign.txt"
$reload_opt
echo ""
echo "Signature '$input' has been added to my-whitelist.ign2 and"
echo "all databases have been reloaded. The script will track any changes"
echo "to the offending signature and will automatically remove it if the"
echo "signature is modified or removed from the third-party database."
else
echo ""
echo "Failed to successfully update my-whitelist.ign2 file - SKIPPING."
fi
else
echo ""
echo "Clamscan reports my-whitelist.ign2 database integrity is bad - SKIPPING."
fi
else
echo ""
echo "Signature '$input' already exists in my-whitelist.ign2 - no action taken."
fi
else
echo ""
echo "Signature '$input' could not be found."
echo ""
echo "This script will only create a whitelise entry in my-whitelist.ign2 for ClamAV"
echo "'UNOFFICIAL' third-Party signatures as found in the *.ndb databases."
fi
else
echo "No input detected - no action taken."
fi
echo ""
exit
;;
*) echo "$usage"
exit
;;
esac
done
# Handle '-c' config file location issues.
if [ "$1" = -c ] ;
then
if [ ! -s "$conf_file" ] ; then
echo ""
echo " Config file does not exist at: $2"
echo " Check the config file path and try again..."
echo "$usage"
exit
fi
if [ "`basename "$conf_file"`" != "`basename "$default_config"`" ] ; then
echo ""
echo " Invalid config file: $2"
echo " Config file must be named: `basename $default_config`"
echo "$usage"
exit
fi
config_source="$conf_file"
else
if [ $# -ne 0 ] ; then
echo ""
echo " Invalid option: $1"
echo "$usage"
exit
fi
if [ ! -s "$default_config" ] ; then
echo ""
echo " Cannot find default config file at: $default_config"
echo "$usage"
exit
fi
config_source="$default_config"
fi
. "$config_source"
################################################################################
# Using functions here to handle config settings for script comments and logging.
comment () {
test "$comment_silence" = "no" && echo "${@:-}"
}
log () {
test "$enable_logging" = "yes" && echo `date "+%b %d %T"` "${@:-}" >> "$log_file_path/$log_file_name"
}
# Check to see if the script's "USER CONFIGURATION FILE" has been completed.
if [ "$user_configuration_complete" != "yes" ]
then
echo ""
echo " *** SCRIPT CONFIGURATION HAS NOT BEEN COMPLETED ***"
echo " Please review the script configuration file: `basename $default_config`."
echo " Once the user configuration has been completed, rerun the script."
echo ""
log "ALERT - SCRIPT HALTED, user configuration not completed"
exit 1
fi
# If "ham_dir" variable is set, then create initial whitelist files (skipped if first-time script run).
test_dir="$work_dir/test"
if [ -n "$ham_dir" -a -d "$work_dir" -a ! -d "$test_dir" ] ; then
if [ -d "$ham_dir" ]
then
mkdir -p "$test_dir"
cp -f "$work_dir"/*/*.ndb "$test_dir"
clamscan --infected --no-summary -d "$test_dir" "$ham_dir"/* | \
sed 's/\.UNOFFICIAL FOUND//' | awk '{print $NF}' >> "$config_dir/whitelist.txt"
grep -h -f "$config_dir/whitelist.txt" "$test_dir"/* | \
cut -d "*" -f2 | sort | uniq > "$config_dir/whitelist.hex"
cd "$test_dir"
for db_file in `ls`; do
grep -h -v -f "$config_dir/whitelist.hex" "$db_file" > "$db_file-tmp"
mv -f "$db_file-tmp" "$db_file"
if clamscan --quiet -d "$db_file" "$config_dir/scan-test.txt" 2>/dev/null ; then
if rsync -pcqt $db_file $clam_dbs ; then
perms chown $clam_user:$clam_group $clam_dbs/$db_file
do_clamd_reload=1
fi
fi
done
if [ -s "$config_dir/whitelist.hex" ]
then
echo "*** Initial HAM directory scan whitelist file created in $config_dir ***"
echo ""
log "INFO - Initial HAM directory scan whitelist file created in $config_dir"
else
echo "No false-positives detected in initial HAM directory scan"
log "No false-positives detected in initial HAM directory scan"
fi
else
echo "Cannot locate HAM directory: $ham_dir"
echo "Skipping initial whitelist file creation. Fix 'ham_dir' path in config file"
log "WARNING - Cannot locate HAM directory: $ham_dir"
log "WARNING - Skipping initial whitelist file creation. Fix 'ham_dir' path in config file"
fi
fi
# Check to see if the working directories have been created.
# If not, create them. Otherwise, ignore and proceed with script.
mkdir -p "$work_dir" "$ss_dir" "$si_dir" "$mbl_dir" "$config_dir" "$gpg_dir" "$add_dir"
# Set secured access permissions to the GPG directory
chmod 0700 "$gpg_dir"
# If we haven't done so yet, download Sanesecurity public GPG key and import to custom keyring.
if [ ! -s "$gpg_dir/publickey.gpg" ] ; then
if ! curl -s -S $curl_proxy --connect-timeout "$curl_connect_timeout" --max-time "$curl_max_time" \
-L -R http://www.sanesecurity.net/publickey.gpg -o $gpg_dir/publickey.gpg
then
echo ""
echo "Could not download Sanesecurity public GPG key"
log "ALERT - Could not download Sanesecurity public GPG key"
exit 1
else
comment ""
comment "Sanesecurity public GPG key successfully downloaded"
comment ""
log "INFO - Sanesecurity public GPG key successfully downloaded"
rm -f -- "$gpg_dir/ss-keyring.gp*"
if ! gpg -q --no-options --no-default-keyring --homedir $gpg_dir --keyring $gpg_dir/ss-keyring.gpg \
--import $gpg_dir/publickey.gpg 2>/dev/null
then
echo "Could not import Sanesecurity public GPG key to custom keyring"
log "ALERT - Could not import Sanesecurity public GPG key to custom keyring"
exit 1
else
chmod 0644 $gpg_dir/*.*
comment "Sanesecurity public GPG key successfully imported to custom keyring"
log "INFO - Sanesecurity public GPG key successfully imported to custom keyring"
fi
fi
fi
# If custom keyring is missing, try to re-import Sanesecurity public GPG key.
if [ ! -s "$gpg_dir/ss-keyring.gpg" ] ; then
rm -f -- "$gpg_dir/ss-keyring.gp*"
if ! gpg -q --no-options --no-default-keyring --homedir $gpg_dir --keyring $gpg_dir/ss-keyring.gpg --import $gpg_dir/publickey.gpg
then
echo "Custom keyring MISSING or CORRUPT! Could not import Sanesecurity public GPG key to custom keyring"
log "ALERT - Custom keyring MISSING or CORRUPT! Could not import Sanesecurity public GPG key to custom keyring"
exit 1
else
chmod 0644 $gpg_dir/*.*
comment "Sanesecurity custom keyring MISSING! GPG key successfully re-imported to custom keyring"
comment ""
log "INFO - Sanesecurity custom keyring MISSING! GPG key successfully re-imported to custom keyring"
fi
fi
# Database update check, time randomization section. This script now
# provides support for both bash and non-bash enabled system shells.
if [ "$enable_random" = "yes" ] ; then
if [ -n "$RANDOM" ]
then
sleep_time=$(($RANDOM * $(($max_sleep_time - $min_sleep_time)) / 32767 + $min_sleep_time))
else
sleep_time=0
while [ "$sleep_time" -lt "$min_sleep_time" -o "$sleep_time" -gt "$max_sleep_time" ] ; do
sleep_time=`head -1 /dev/urandom | cksum | awk '{print $2}'`
done
fi
if [ ! -t 0 ]
then
comment "`date` - Pausing database file updates for $sleep_time seconds..."
log "INFO - Pausing database file updates for $sleep_time seconds..."
sleep $sleep_time
comment ""
comment "`date` - Pause complete, checking for new database files..."
else
curl_silence="no"
rsync_silence="no"
gpg_silence="no"
comment_silence="no"
log "INFO - Script was run manually"
fi
fi
# Create "scan-test.txt" file for clamscan database integrity testing.
if [ ! -s "$config_dir/scan-test.txt" ] ; then
echo "This is the clamscan test file..." > "$config_dir/scan-test.txt"
fi
# Unofficial ClamAV database provider URLs
ss_url="rsync.sanesecurity.net"
si_url="clamav.securiteinfo.com"
mbl_url="www.malwarepatrol.net"
# Create the Sanesecurity rsync "include" file (defines which files to download).
ss_include_dbs="$config_dir/ss-include-dbs.txt"
if [ -n "$ss_dbs" ] ; then
rm -f -- "$ss_include_dbs" "$ss_dir/*.sha256"
for db_name in $ss_dbs ; do
echo "$db_name" >> "$ss_include_dbs"
echo "$db_name.sig" >> "$ss_include_dbs"
done
fi
# If rsync proxy is defined in the config file, then export it for use.
if [ -n "$rsync_proxy" ]; then
RSYNC_PROXY="$rsync_proxy"
export RSYNC_PROXY
fi
# Create files containing lists of current and previously active 3rd-party databases
# so that databases and/or backup files that are no longer being used can be removed.
current_tmp="$config_dir/current-dbs.tmp"
current_dbs="$config_dir/current-dbs.txt"
previous_dbs="$config_dir/previous-dbs.txt"
sort "$current_dbs" > "$previous_dbs" 2>/dev/null
rm -f "$current_dbs"
clamav_files () {
echo "$clam_dbs/$db" >> "$current_tmp"
if [ "$keep_db_backup" = "yes" ] ; then
echo "$clam_dbs/$db-bak" >> "$current_tmp"
fi
}
if [ -n "$ss_dbs" ] ; then
for db in $ss_dbs ; do
echo "$ss_dir/$db" >> "$current_tmp"
echo "$ss_dir/$db.sig" >> "$current_tmp"
clamav_files
done
fi
if [ -n "$si_dbs" ] ; then
for db in $si_dbs ; do
echo "$si_dir/$db" >> "$current_tmp"
clamav_files
done
fi
if [ -n "$mbl_dbs" ] ; then
for db in $mbl_dbs ; do
echo "$mbl_dir/$db" >> "$current_tmp"
clamav_files
done
fi
if [ -n "$add_dbs" ] ; then
for db in $add_dbs ; do
echo "$add_dir/$db" >> "$current_tmp"
clamav_files
done
fi
# Remove 3rd-party databases and/or backup files that are no longer being used.
sort "$current_tmp" > "$current_dbs" 2>/dev/null
rm -f "$current_tmp"
db_changes="$config_dir/db-changes.txt"
if [ ! -s "$previous_dbs" ] ; then
cp -f "$current_dbs" "$previous_dbs" 2>/dev/null
fi
diff "$current_dbs" "$previous_dbs" 2>/dev/null | grep '>' | awk '{print $2}' > "$db_changes"
if [ -s "$db_changes" ] ; then
if grep -vq "bak" $db_changes 2>/dev/null ; then
do_clamd_reload=2
fi
comment ""
for file in `cat $db_changes` ; do
rm -f -- "$file"
comment "File removed: $file"
log "INFO - File removed: $file"
done
fi
# Create "purge.txt" file for package maintainers to support package uninstall.
purge="$config_dir/purge.txt"
cp -f "$current_dbs" "$purge"
echo "$config_dir/current-dbs.txt" >> "$purge"
echo "$config_dir/db-changes.txt" >> "$purge"
echo "$config_dir/last-mbl-update.txt" >> "$purge"
echo "$config_dir/last-si-update.txt" >> "$purge"
echo "$config_dir/local.ign" >> "$purge"
echo "$config_dir/monitor-ign.txt" >> "$purge"
echo "$config_dir/my-whitelist.ign2" >> "$purge"
echo "$config_dir/tracker.txt" >> "$purge"
echo "$config_dir/previous-dbs.txt" >> "$purge"
echo "$config_dir/scan-test.txt" >> "$purge"
echo "$config_dir/ss-include-dbs.txt" >> "$purge"
echo "$config_dir/whitelist.hex" >> "$purge"
echo "$gpg_dir/publickey.gpg" >> "$purge"
echo "$gpg_dir/secring.gpg" >> "$purge"
echo "$gpg_dir/ss-keyring.gpg*" >> "$purge"
echo "$gpg_dir/trustdb.gpg" >> "$purge"
echo "$log_file_path/$log_file_name*" >> "$purge"
echo "$purge" >> "$purge"
# Silence rsync output and only report errors - useful if script is run via cron.
if [ "$rsync_silence" = "yes" ] ; then
rsync_output_level="-q"
fi
# If the local rsync client supports the '--no-motd' flag, then enable it.
if rsync --help | grep 'no-motd' > /dev/null ; then
no_motd="--no-motd"
fi
# If the local rsync client supports the '--contimeout' flag, then enable it.
if rsync --help | grep 'contimeout' > /dev/null ; then
connect_timeout="--contimeout=$rsync_connect_timeout"
fi
# Silence curl output and only report errors - useful if script is run via cron.
if [ "$curl_silence" = "yes" ] ; then
curl_output_level="-s -S"
fi
# If ClamD status check is enabled ("clamd_socket" variable is uncommented
# and the socket path is correctly specified in "User Edit" section above),
# then test to see if clamd is running or not.
if [ -n "$clamd_socket" ] ; then
if [ "`perl -e 'use IO::Socket::UNIX; print $IO::Socket::UNIX::VERSION,"\n"' 2>/dev/null`" ]
then
io_socket1=1
if [ "`perl -MIO::Socket::UNIX -we '$s = IO::Socket::UNIX->new(shift); $s->print("PING"); \
print $s->getline; $s->close' "$clamd_socket" 2>/dev/null`" = "PONG" ] ; then
io_socket2=1
comment "===================="
comment "= ClamD is running ="
comment "===================="
log "INFO - ClamD is running"
fi
else
socat="`which socat 2>/dev/null`"
if [ -n "$socat" -a -x "$socat" ] ; then
socket_cat1=1
if [ "`(echo "PING"; sleep 1;) | socat - "$clamd_socket" 2>/dev/null`" = "PONG" ] ; then
socket_cat2=1
comment "===================="
comment "= ClamD is running ="
comment "===================="
log "INFO - ClamD is running"
fi
fi
fi
if [ -z "$io_socket1" -a -z "$socket_cat1" ]
then
echo ""
echo " --- WARNING ---"
echo " It appears that neither 'SOcket CAT' (socat) nor the perl module"
echo " 'IO::Socket::UNIX' are installed on the system. In order to run"
echo " the ClamD socket test to determine whether ClamD is running or"
echo " or not, either 'socat' or 'IO::Socket::UNIX' must be installed."
echo ""
echo " You can silence this warning by either installing 'socat' or the"
echo " 'IO::Socket::UNIX' perl module, or by simply commenting out the"
echo " 'clamd_socket' variable in the clamav-unofficial-sigs.conf file."
log "WARNING - Neither socat nor IO::Socket::UNIX perl module found, cannot test whether ClamD is running"
else
if [ -z "$io_socket2" -a -z "$socket_cat2" ] ; then
echo ""
echo " *************************"
echo " * !!! ALERT !!! *"
echo " * CLAMD IS NOT RUNNING! *"
echo " *************************"
echo ""
log "ALERT - ClamD is not running"
if [ -n "$start_clamd" ] ; then
echo " Attempting to start ClamD..."
echo ""
if [ -n "$io_socket1" ]
then
rm -f -- "$clamd_pid" "$clamd_lock" "$clamd_socket" 2>/dev/null
$start_clamd > /dev/null && sleep 5
if [ "`perl -MIO::Socket::UNIX -we '$s = IO::Socket::UNIX->new(shift); $s->print("PING"); \
print $s->getline; $s->close' "$clamd_socket" 2>/dev/null`" = "PONG" ]
then
echo "=================================="
echo "= ClamD was successfully started ="
echo "=================================="
log "NOTICE - ClamD was successfuly started"
else
echo " *************************"
echo " * !!! PANIC !!! *"
echo " * CLAMD FAILED TO START *"
echo " *************************"
echo ""
echo "Check to confirm that the clamd start process defined for"
echo "the 'start_clamd' variable in the 'USER EDIT SECTION' is"
echo "set correctly for your particular distro. If it is, then"
echo "check your logs to determine why clamd failed to start."
echo ""
log "CRITICAL - ClamD failed to start"
exit 1
fi
else
if [ -n "$socket_cat1" ] ; then
rm -f -- "$clamd_pid" "$clamd_lock" "$clamd_socket" 2>/dev/null
$start_clamd > /dev/null && sleep 5
if [ "`(echo "PING"; sleep 1;) | socat - "$clamd_socket" 2>/dev/null`" = "PONG" ]
then
echo "=================================="
echo "= ClamD was successfully started ="
echo "=================================="
log "NOTICE - ClamD was successfuly started"
else
echo " *************************"
echo " * !!! PANIC !!! *"
echo " * CLAMD FAILED TO START *"
echo " *************************"
echo ""
echo "Check to confirm that the clamd start process defined for"
echo "the 'start_clamd' variable in the 'USER EDIT SECTION' is"
echo "set correctly for your particular distro. If it is, then"
echo "check your logs to determine why clamd failed to start."
echo ""
log "CRITICAL - ClamD failed to start"
exit 1
fi
fi
fi
fi
fi
fi
fi
# Check and save current system time since epoch for time related database downloads.
# However, if unsuccessful, issue a warning that we cannot calculate times since epoch.
if [ -n "$si_dbs" -o -n "mbl_dbs" ]
then
if [ `date +%s` -gt 0 2>/dev/null ]
then
current_time=`date +%s`
else
if [ `perl -le print+time 2>/dev/null` ] ; then
current_time=`perl -le print+time`
fi
fi
else
echo ""
echo " --- WARNING ---"
echo "The system's date function does not appear to support 'date +%s', nor was 'perl' found"
echo "on the system. The SecuriteInfo and MalwarePatrol updates were bypassed at this time."
echo ""
echo "You can silence this warning by either commenting out the 'si_dbs' and 'mbl_dbs'"
echo "variables in the 'USER CONFIGURATION' section of the script, or by installing perl or"
echo "the GNU date utility, either of which can calculate the needed seconds since epoch."
log "WARNING - Systems does not support calculating time since epoch, SecuriteInfo and MalwarePatrol updates bypassed"
si_dbs=""
mbl_dbs=""
fi
################################################################
# Check for Sanesecurity database & GPG signature file updates #
################################################################
if [ -n "$ss_dbs" ] ; then
db_file=""
comment ""
comment "======================================================================"
comment "Sanesecurity Database & GPG Signature File Updates"
comment "======================================================================"
ss_mirror_ips=`dig +ignore +short $ss_url`
for ss_mirror_ip in $ss_mirror_ips ; do
ss_mirror_name=`dig +short -x $ss_mirror_ip | sed 's/\.$//'`
ss_mirror_site_info="$ss_mirror_name $ss_mirror_ip"
comment ""
comment "Sanesecurity mirror site used: $ss_mirror_site_info"
log "INFO - Sanesecurity mirror site used: $ss_mirror_site_info"
if rsync $rsync_output_level $no_motd --files-from=$ss_include_dbs -ctuz $connect_timeout \
--timeout="$rsync_max_time" --stats rsync://$ss_mirror_ip/sanesecurity $ss_dir 2>/dev/null
then
ss_rsync_success="1"
for db_file in $ss_dbs ; do
if ! cmp -s $ss_dir/$db_file $clam_dbs/$db_file ; then
comment ""
comment "Testing updated Sanesecurity database file: $db_file"
log "INFO - Testing updated Sanesecurity database file: $db_file"
if ! gpg --trust-model always -q --no-default-keyring --homedir $gpg_dir --keyring $gpg_dir/ss-keyring.gpg \
--verify $ss_dir/$db_file.sig $ss_dir/$db_file 2>/dev/null
then
gpg --always-trust -q --no-default-keyring --homedir $gpg_dir --keyring $gpg_dir/ss-keyring.gpg \
--verify $ss_dir/$db_file.sig $ss_dir/$db_file 2>/dev/null
fi
if [ "$?" = "0" ]
then
test "$gpg_silence" = "no" && echo "Sanesecurity GPG Signature tested good on $db_file database"
log "INFO - Sanesecurity GPG Signature tested good on $db_file database" ; true
else
echo "Sanesecurity GPG Signature test FAILED on $db_file database - SKIPPING"
log "WARNING - Sanesecurity GPG Signature test FAILED on $db_file database - SKIPPING" ; false
fi
if [ "$?" = "0" ] ; then
db_ext=`echo $db_file | cut -d "." -f2`
if [ -z "$ham_dir" -o "$db_ext" != "ndb" ]
then
if clamscan --quiet -d "$ss_dir/$db_file" "$config_dir/scan-test.txt" 2>/dev/null
then
comment "Clamscan reports Sanesecurity $db_file database integrity tested good"
log "INFO - Clamscan reports Sanesecurity $db_file database integrity tested good" ; true
else
echo "Clamscan reports Sanesecurity $db_file database integrity tested BAD - SKIPPING"
log "WARNING - Clamscan reports Sanesecurity $db_file database integrity tested BAD - SKIPPING" ; false
fi && \
(test "$keep_db_backup" = "yes" && cp -f $clam_dbs/$db_file $clam_dbs/$db_file-bak 2>/dev/null ; true) && \
if rsync -pcqt $ss_dir/$db_file $clam_dbs
then
perms chown $clam_user:$clam_group $clam_dbs/$db_file
comment "Successfully updated Sanesecurity production database file: $db_file"
log "INFO - Successfully updated Sanesecurity production database file: $db_file"
ss_update=1
do_clamd_reload=1
else
echo "Failed to successfully update Sanesecurity production database file: $db_file - SKIPPING"
log "WARNING - Failed to successfully update Sanesecurity production database file: $db_file - SKIPPING" ; false
fi
else
grep -h -v -f "$config_dir/whitelist.hex" "$ss_dir/$db_file" > "$test_dir/$db_file"
clamscan --infected --no-summary -d "$test_dir/$db_file" "$ham_dir"/* | \
sed 's/\.UNOFFICIAL FOUND//' | awk '{print $NF}' > "$config_dir/whitelist.txt"
grep -h -f "$config_dir/whitelist.txt" "$test_dir/$db_file" | \
cut -d "*" -f2 | sort | uniq >> "$config_dir/whitelist.hex"
grep -h -v -f "$config_dir/whitelist.hex" "$test_dir/$db_file" > "$test_dir/$db_file-tmp"
mv -f "$test_dir/$db_file-tmp" "$test_dir/$db_file"
if clamscan --quiet -d "$test_dir/$db_file" "$config_dir/scan-test.txt" 2>/dev/null
then
comment "Clamscan reports Sanesecurity $db_file database integrity tested good"
log "INFO - Clamscan reports Sanesecurity $db_file database integrity tested good" ; true
else
echo "Clamscan reports Sanesecurity $db_file database integrity tested BAD - SKIPPING"
log "WARNING - Clamscan reports Sanesecurity $db_file database integrity tested BAD - SKIPPING" ; false
fi && \
(test "$keep_db_backup" = "yes" && cp -f $clam_dbs/$db_file $clam_dbs/$db_file-bak 2>/dev/null ; true) && \
if rsync -pcqt $test_dir/$db_file $clam_dbs
then
perms chown $clam_user:$clam_group $clam_dbs/$db_file
comment "Successfully updated Sanesecurity production database file: $db_file"
log "INFO - Successfully updated Sanesecurity production database file: $db_file"
ss_update=1
do_clamd_reload=1
else
echo "Failed to successfully update Sanesecurity production database file: $db_file - SKIPPING"
log "WARNING - Failed to successfully update Sanesecurity production database file: $db_file - SKIPPING"
fi
fi
fi
fi
done
if [ "$ss_update" != "1" ]
then
comment ""
comment "No Sanesecurity database file updates found"
log "INFO - No Sanesecurity database file updates found"
break
else
break
fi
else
comment "Connection to $ss_mirror_site_info failed - Trying next mirror site..."
log "WARNING - Connection to $ss_mirror_site_info failed - Trying next mirror site..."
fi
done
if [ "$ss_rsync_success" != "1" ] ; then
echo ""
echo "Access to all Sanesecurity mirror sites failed - Check for connectivity issues"
echo "or signature database name(s) misspelled in the script's configuration file."
log "WARNING - Access to all Sanesecurity mirror sites failed - Check for connectivity issues"
log "WARNING - or signature database name(s) misspelled in the script's configuration file."
fi
fi
#######################################################################
# Check for updated SecuriteInfo database files every set number of #
# hours as defined in the "USER CONFIGURATION" section of this script #
#######################################################################
if [ -n "$si_dbs" ] ; then
rm -f "$si_dir/*.gz"
if [ -s "$config_dir/last-si-update.txt" ]
then
last_si_update=`cat $config_dir/last-si-update.txt`
else
last_si_update="0"
fi
db_file=""
loop=""
update_interval=$(($si_update_hours * 3600))
time_interval=$(($current_time - $last_si_update))
if [ "$time_interval" -ge $(($update_interval - 600)) ]
then
echo "$current_time" > "$config_dir"/last-si-update.txt
comment ""
comment "======================================================================"
comment "SecuriteInfo Database File Updates"
comment "======================================================================"
log "INFO - Checking for SecuriteInfo updates..."
si_updates="0"
for db_file in $si_dbs ; do
if [ "$loop" = "1" ]
then
comment "---"
else
comment ""
fi
comment "Checking for updated SecuriteInfo database file: $db_file"
comment ""
si_db_update="0"
if [ -s "$si_dir/$db_file" ]
then
z_opt="-z $si_dir/$db_file"
else
z_opt=""
fi
if curl $curl_proxy $curl_output_level --connect-timeout "$curl_connect_timeout" \
--max-time "$curl_max_time" -L -R $z_opt -o $si_dir/$db_file http://$si_url/$db_file
then
loop="1"
if ! cmp -s $si_dir/$db_file $clam_dbs/$db_file ; then
if [ "$?" = "0" ] ; then
db_ext=`echo $db_file | cut -d "." -f2`
comment ""
comment "Testing updated SecuriteInfo database file: $db_file"
log "INFO - Testing updated SecuriteInfo database file: $db_file"
if [ -z "$ham_dir" -o "$db_ext" != "ndb" ]
then
if clamscan --quiet -d "$si_dir/$db_file" "$config_dir/scan-test.txt" 2>/dev/null
then
comment "Clamscan reports SecuriteInfo $db_file database integrity tested good"
log "INFO - Clamscan reports SecuriteInfo $db_file database integrity tested good" ; true
else
echo "Clamscan reports SecuriteInfo $db_file database integrity tested BAD - SKIPPING"
log "WARNING - Clamscan reports SecuriteInfo $db_file database integrity tested BAD - SKIPPING" ; false
rm -f "$si_dir/$db_file"
fi && \
(test "$keep_db_backup" = "yes" && cp -f $clam_dbs/$db_file $clam_dbs/$db_file-bak 2>/dev/null ; true) && \
if rsync -pcqt $si_dir/$db_file $clam_dbs
then
perms chown $clam_user:$clam_group $clam_dbs/$db_file
comment "Successfully updated SecuriteInfo production database file: $db_file"
log "INFO - Successfully updated SecuriteInfo production database file: $db_file"
si_updates=1
si_db_update=1
do_clamd_reload=1
else
echo "Failed to successfully update SecuriteInfo production database file: $db_file - SKIPPING"
log "WARNING - Failed to successfully update SecuriteInfo production database file: $db_file - SKIPPING"
fi
else
grep -h -v -f "$config_dir/whitelist.hex" "$si_dir/$db_file" > "$test_dir/$db_file"
clamscan --infected --no-summary -d "$test_dir/$db_file" "$ham_dir"/* | \
sed 's/\.UNOFFICIAL FOUND//' | awk '{print $NF}' > "$config_dir/whitelist.txt"
grep -h -f "$config_dir/whitelist.txt" "$test_dir/$db_file" | \
cut -d "*" -f2 | sort | uniq >> "$config_dir/whitelist.hex"
grep -h -v -f "$config_dir/whitelist.hex" "$test_dir/$db_file" > "$test_dir/$db_file-tmp"
mv -f "$test_dir/$db_file-tmp" "$test_dir/$db_file"
if clamscan --quiet -d "$test_dir/$db_file" "$config_dir/scan-test.txt" 2>/dev/null
then
comment "Clamscan reports SecuriteInfo $db_file database integrity tested good"
log "INFO - Clamscan reports SecuriteInfo $db_file database integrity tested good" ; true
else
echo "Clamscan reports SecuriteInfo $db_file database integrity tested BAD - SKIPPING"
log "WARNING - Clamscan reports SecuriteInfo $db_file database integrity tested BAD - SKIPPING" ; false
rm -f "$si_dir/$db_file"
fi && \
(test "$keep_db_backup" = "yes" && cp -f $clam_dbs/$db_file $clam_dbs/$db_file-bak 2>/dev/null ; true) && \
if rsync -pcqt $test_dir/$db_file $clam_dbs
then
perms chown $clam_user:$clam_group $clam_dbs/$db_file
comment "Successfully updated SecuriteInfo production database file: $db_file"
log "INFO - Successfully updated SecuriteInfo production database file: $db_file"
si_updates=1
si_db_update=1
do_clamd_reload=1
else
echo "Failed to successfully update SecuriteInfo production database file: $db_file - SKIPPING"
log "WARNING - Failed to successfully update SecuriteInfo production database file: $db_file - SKIPPING"
fi
fi
fi
fi
else
log "WARNING - Failed curl connection to $si_url - SKIPPED SecuriteInfo $db_file update"
fi
if [ "$si_db_update" != "1" ] ; then
comment ""
comment "No updated SecuriteInfo $db_file database file found"
fi
done
if [ "$si_updates" != "1" ] ; then
log "INFO - No SecuriteInfo database file updates found"
fi
else
comment ""
comment "======================================================================"
comment "SecuriteInfo Database File Updates"
comment "======================================================================"
comment ""
time_remaining=$(($update_interval - $time_interval))
hours_left=$(($time_remaining / 3600))
minutes_left=$(($time_remaining % 3600 / 60))
comment "$si_update_hours hours have not yet elapsed since the last SecuriteInfo update check"
comment ""
comment " --- No update check was performed at this time ---"
comment ""
comment "Next check will be performed in approximately $hours_left hour(s), $minutes_left minute(s)"
log "INFO - Next SecuriteInfo check will be performed in approximately $hours_left hour(s), $minutes_left minute(s)"
fi
fi
#####################################################################
# Download MalwarePatrol database file(s) every set number of hours #
# as defined in the "USER CONFIGURATION" section of this script. #
#####################################################################
if [ -n "$mbl_dbs" ] ; then
if [ -s "$config_dir/last-mbl-update.txt" ]
then
last_mbl_update=`cat $config_dir/last-mbl-update.txt`
else
last_mbl_update="0"
fi
db_file=""
update_interval=$(($mbl_update_hours * 3600))
time_interval=$(($current_time - $last_mbl_update))
if [ "$time_interval" -ge $(($update_interval - 600)) ]
then
echo "$current_time" > "$config_dir"/last-mbl-update.txt
log "INFO - Checking for MalwarePatrol updates..."
for db_file in $mbl_dbs ; do
# Delete the old MBL (mbl.db) database file if it exists and start using the newer
# format (mbl.ndb) database file instead.
test -e $clam_dbs/$db_file -o -e $clam_dbs/$db_file-bak && rm -f -- "$clam_dbs/mbl.d*"
comment ""
comment "======================================================================"
comment "MalwarePatrol $db_file Database File Update"
comment "======================================================================"
comment ""
if curl $curl_proxy $curl_output_level -R --connect-timeout "$curl_connect_timeout" \
--max-time "$curl_max_time" -o $mbl_dir/$db_file http://$mbl_url/cgi/submit?action=list_clamav_ext
then
if ! cmp -s $mbl_dir/$db_file $clam_dbs/$db_file
then
if [ "$?" = "0" ] ; then
db_ext=`echo $db_file | cut -d "." -f2`
comment ""
comment "Testing updated MalwarePatrol database file: $db_file"
log "INFO - Testing updated database file: $db_file"
if [ -z "$ham_dir" -o "$db_ext" != "ndb" ]
then
if clamscan --quiet -d "$mbl_dir/$db_file" "$config_dir/scan-test.txt" 2>/dev/null
then
comment "Clamscan reports MalwarePatrol $db_file database integrity tested good"
log "INFO - Clamscan reports MalwarePatrol $db_file database integrity tested good" ; true
else
echo "Clamscan reports MalwarePatrol $db_file database integrity tested BAD - SKIPPING"
log "WARNING - Clamscan reports MalwarePatrol $db_file database integrity tested BAD - SKIPPING" ; false
fi && \
(test "$keep_db_backup" = "yes" && cp -f $clam_dbs/$db_file $clam_dbs/$db_file-bak 2>/dev/null ; true) && \
if rsync -pcqt $mbl_dir/$db_file $clam_dbs
then
perms chown $clam_user:$clam_group $clam_dbs/$db_file
comment "Successfully updated MalwarePatrol production database file: $db_file"
log "INFO - Successfully updated MalwarePatrol production database file: $db_file"
mbl_update=1
do_clamd_reload=1
else
echo "Failed to successfully update MalwarePatrol production database file: $db_file - SKIPPING"
log "WARNING - Failed to successfully update MalwarePatrol production database file: $db_file - SKIPPING"
fi
else
grep -h -v -f "$config_dir/whitelist.hex" "$mbl_dir/$db_file" > "$test_dir/$db_file"
clamscan --infected --no-summary -d "$test_dir/$db_file" "$ham_dir"/* | \
sed 's/\.UNOFFICIAL FOUND//' | awk '{print $NF}' > "$config_dir/whitelist.txt"
grep -h -f "$config_dir/whitelist.txt" "$test_dir/$db_file" | \
cut -d "*" -f2 | sort | uniq >> "$config_dir/whitelist.hex"
grep -h -v -f "$config_dir/whitelist.hex" "$test_dir/$db_file" > "$test_dir/$db_file-tmp"
mv -f "$test_dir/$db_file-tmp" "$test_dir/$db_file"
if clamscan --quiet -d "$test_dir/$db_file" "$config_dir/scan-test.txt" 2>/dev/null
then
comment "Clamscan reports MalwarePatrol $db_file database integrity tested good"
log "INFO - Clamscan reports MalwarePatrol $db_file database integrity tested good" ; true
else
echo "Clamscan reports MalwarePatrol $db_file database integrity tested BAD - SKIPPING"
log "WARNING - Clamscan reports MalwarePatrol $db_file database integrity tested BAD - SKIPPING" ; false
fi && \
(test "$keep_db_backup" = "yes" && cp -f $clam_dbs/$db_file $clam_dbs/$db_file-bak 2>/dev/null ; true) && \
if rsync -pcqt $test_dir/$db_file $clam_dbs
then
perms chown $clam_user:$clam_group $clam_dbs/$db_file
comment "Successfully updated MalwarePatrol production database file: $db_file"
log "INFO - Successfully updated MalwarePatrol production database file: $db_file"
mbl_update=1
do_clamd_reload=1
else
echo "Failed to successfully update MalwarePatrol production database file: $db_file - SKIPPING"
log "WARNING - Failed to successfully update MalwarePatrol production database file: $db_file - SKIPPING"
fi
fi
fi
else
comment ""
comment "MalwarePatrol signature database ($db_file) did not change - skipping"
log "INFO - MalwarePatrol signature database ($db_file) did not change - skipping"
fi
else
log "WARNING - Failed curl connection to $mbl_url - SKIPPED MalwarePatrol $db_file update"
fi
done
else
comment ""
comment "======================================================================"
comment "MalwarePatrol Database File Update"
comment "======================================================================"
comment ""
time_remaining=$(($update_interval - $time_interval))
hours_left=$(($time_remaining / 3600))
minutes_left=$(($time_remaining % 3600 / 60))
comment "$mbl_update_hours hours have not yet elapsed since the last MalwarePatrol download"
comment ""
comment " --- No database download was performed at this time ---"
comment ""
comment "Next download will be performed in approximately $hours_left hour(s), $minutes_left minute(s)"
log "INFO - Next MalwarePatrol download will be performed in approximately $hours_left hour(s), $minutes_left minute(s)"
fi
fi
###################################################
# Check for user added signature database updates #
###################################################
if [ -n "$add_dbs" ] ; then
comment ""
comment "======================================================================"
comment "User Added Signature Database File Update(s)"
comment "======================================================================"
comment ""
for db_url in $add_dbs ; do
base_url=`echo $db_url | cut -d "/" -f3`
db_file=`basename $db_url`
if [ "`echo $db_url | cut -d ":" -f1`" = "rsync" ]
then
if ! rsync $rsync_output_level $no_motd $connect_timeout --timeout="$rsync_max_time" --exclude=*.txt \
-crtuz --stats --exclude=*.sha256 --exclude=*.sig --exclude=*.gz $db_url $add_dir ; then
echo "Failed rsync connection to $base_url - SKIPPED $db_file update"
log "WARNING - Failed rsync connection to $base_url - SKIPPED $db_file update"
fi
else
if [ -s "$add_dir/$db_file" ]
then
z_opt="-z $add_dir/$db_file"
else
z_opt=""
fi
if ! curl $curl_output_level --connect-timeout "$curl_connect_timeout" --max-time \
"$curl_max_time" -L -R $z_opt -o $add_dir/$db_file $db_url ; then
echo "Failed curl connection to $base_url - SKIPPED $db_file update"
log "WARNING - Failed curl connection to $base_url - SKIPPED $db_file update"
fi
fi
done
db_file=""
for db_file in `ls $add_dir`; do
if ! cmp -s $add_dir/$db_file $clam_dbs/$db_file ; then
comment ""
comment "Testing updated database file: $db_file"
clamscan --quiet -d "$add_dir/$db_file" "$config_dir/scan-test.txt" 2>/dev/null
if [ "$?" = "0" ]
then
comment "Clamscan reports $db_file database integrity tested good"
log "INFO - Clamscan reports $db_file database integrity tested good" ; true
else
echo "Clamscan reports User Added $db_file database integrity tested BAD - SKIPPING"
log "WARNING - Clamscan reports User Added $db_file database integrity tested BAD - SKIPPING" ; false
fi && \
(test "$keep_db_backup" = "yes" && cp -f $clam_dbs/$db_file $clam_dbs/$db_file-bak 2>/dev/null ; true) && \
if rsync -pcqt $add_dir/$db_file $clam_dbs
then
perms chown $clam_user:$clam_group $clam_dbs/$db_file
comment "Successfully updated User-Added production database file: $db_file"
log "INFO - Successfully updated User-Added production database file: $db_file"
add_update=1
do_clamd_reload=1
else
echo "Failed to successfully update User-Added production database file: $db_file - SKIPPING"
log "WARNING - Failed to successfully update User-Added production database file: $db_file - SKIPPING"
fi
fi
done
if [ "$add_update" != "1" ] ; then
comment ""
comment "No User-Defined database file updates found"
log "INFO - No User-Defined database file updates found"
fi
fi
# Check to see if the local.ign file exists, and if it does, check to see if any of the script
# added bypass entries can be removed due to offending signature modifications or removals.
if [ -s "$clam_dbs/local.ign" -a -s "$config_dir/monitor-ign.txt" ] ; then
ign_updated=0
cd "$clam_dbs"
cp -f local.ign "$config_dir/local.ign"
comment ""
comment "======================================================================"
for entry in `cat "$config_dir/monitor-ign.txt" 2>/dev/null` ; do
sig_file=`echo "$entry" | tr -d "\r" | awk -F ":" '{print $1}'`
sig_hex=`echo "$entry" | tr -d "\r" | awk -F ":" '{print $NF}'`
sig_name_old=`echo "$entry" | tr -d "\r" | awk -F ":" '{print $3}'`
sig_ign_old=`grep "$sig_name_old" "$config_dir/local.ign"`
sig_old=`echo "$entry" | tr -d "\r" | cut -d ":" -f3-`
sig_new=`grep -hwF "$sig_hex" "$sig_file" | tr -d "\r" 2>/dev/null`
sig_mon_new=`grep -HwF -n "$sig_hex" "$sig_file" | tr -d "\r"`
if [ -n "$sig_new" ]
then
if [ "$sig_old" != "$sig_new" -o "$entry" != "$sig_mon_new" ] ; then
sig_name_new=`echo "$sig_new" | tr -d "\r" | awk -F ":" '{print $1}'`
sig_ign_new=`echo "$sig_mon_new" | cut -d ":" -f1-3`
perl -i -ne "print unless /$sig_ign_old/" "$config_dir/monitor-ign.txt"
echo "$sig_mon_new" >> "$config_dir/monitor-ign.txt"
perl -p -i -e "s/$sig_ign_old/$sig_ign_new/" "$config_dir/local.ign"
comment ""
comment "$sig_name_old hexadecimal signature unchanged, however signature name and/or line placement"
comment "in $sig_file has change to $sig_name_new - updated local.ign to reflect this change."
log "INFO - $sig_name_old hexadecimal signature unchanged, however signature name and/or line placement"
log "INFO - in $sig_file has change to $sig_name_new - updated local.ign to reflect this change."
ign_updated=1
fi
else
perl -i -ne "print unless /$sig_ign_old/" "$config_dir/monitor-ign.txt" "$config_dir/local.ign"
comment ""
comment "$sig_name_old signature has been removed from $sig_file, entry removed from local.ign."
log "INFO - $sig_name_old signature has been removed from $sig_file, entry removed from local.ign."
ign_updated=1
fi
done
if [ "$ign_updated" = "1" ]
then
if clamscan --quiet -d "$config_dir/local.ign" "$config_dir/scan-test.txt"
then
if rsync -pcqt $config_dir/local.ign $clam_dbs
then
perms chown $clam_user:$clam_group "$clam_dbs/local.ign"
chmod 0644 "$clam_dbs/local.ign" "$config_dir/monitor-ign.txt"
do_clamd_reload=3
else
echo "Failed to successfully update local.ign file - SKIPPING"
log "WARNING - Failed to successfully update local.ign file - SKIPPING"
fi
else
echo "Clamscan reports local.ign database integrity is bad - SKIPPING"
log "WARNING - Clamscan reports local.ign database integrity is bad - SKIPPING"
fi
else
comment "No whitelist signature changes found in local.ign."
comment "======================================================================"
log "INFO - No whitelist signature changes found in local.ign."
fi
fi
# Check to see if my-whitelist.ign2 file exists, and if it does, check to see if any of the script
# added whitelist entries can be removed due to offending signature modifications or removals.
if [ -s "$clam_dbs/my-whitelist.ign2" -a -s "$config_dir/tracker.txt" ] ; then
ign2_updated=0
cd "$clam_dbs"
cp -f my-whitelist.ign2 "$config_dir/my-whitelist.ign2"
comment ""
comment "======================================================================"
for entry in `cat "$config_dir/tracker.txt" 2>/dev/null` ; do
sig_file=`echo "$entry" | cut -d ":" -f1`
sig_full=`echo "$entry" | cut -d ":" -f2-`
sig_name=`echo "$entry" | cut -d ":" -f2`
if ! grep -F "$sig_full" "$sig_file" > /dev/null 2>&1 ; then
perl -i -ne "print unless /$sig_name$/" "$config_dir/my-whitelist.ign2"
perl -i -ne "print unless /:$sig_name:/" "$config_dir/tracker.txt"
comment ""
comment "$sig_name signature no longer exists in"
comment "$sig_file, whitelist entry removed from my-whitelist.ign2."
log "INFO - $sig_name signature no longer exists in"
log "INFO - $sig_file, whitelist entry removed from my-whitelist.ign2."
ign2_updated=1
fi
done
comment ""
comment "======================================================================"
if [ "$ign2_updated" = "1" ]
then
if clamscan --quiet -d "$config_dir/my-whitelist.ign2" "$config_dir/scan-test.txt"
then
if rsync -pcqt $config_dir/my-whitelist.ign2 $clam_dbs
then
perms chown $clam_user:$clam_group "$clam_dbs/my-whitelist.ign2"
chmod 0644 "$clam_dbs/my-whitelist.ign2" "$config_dir/tracker.txt"
do_clamd_reload=4
else
echo "Failed to successfully update my-whitelist.ign2 file - SKIPPING"
log "WARNING - Failed to successfully update my-whitelist.ign2 file - SKIPPING"
fi
else
echo "Clamscan reports my-whitelist.ign2 database integrity is bad - SKIPPING"
log "WARNING - Clamscan reports my-whitelist.ign2 database integrity is bad - SKIPPING"
fi
else
comment "No whitelist signature changes found in my-whitelist.ign2."
comment "======================================================================"
log "INFO - No whitelist signature changes found in my-whitelist.ign2."
fi
fi
# Check for non-matching whitelist.hex signatures and remove them from the whitelist file (signature modified or removed).
if [ -n "$ham_dir" ] ; then
if [ -s "$config_dir/whitelist.hex" ]
then
grep -h -f "$config_dir/whitelist.hex" "$work_dir"/*/*.ndb | cut -d "*" -f2 | tr -d "\r" | sort | uniq > "$config_dir/whitelist.tmp"
mv -f "$config_dir/whitelist.tmp" "$config_dir/whitelist.hex"
rm -f "$config_dir/whitelist.txt"
rm -f "$test_dir"/*.*
echo ""
echo "***********************************************************************"
echo "* Signature(s) triggered on HAM directory scan - signature(s) removed *"
echo "***********************************************************************"
log "WARNING - Signature(s) triggered on HAM directory scan - signature(s) removed"
else
comment ""
comment "================================================="
comment "= No signatures triggered on HAM directory scan ="
comment "================================================="
log "INFO - No signatures triggered on HAM directory scan"
fi
fi
# Set appropriate directory and file permissions to all production signature files
# and set file access mode to 0644 on all working directory files.
perms chown -R $clam_user:$clam_group "$clam_dbs"
if ! find "$work_dir" -type f -exec chmod 0644 {} + 2>/dev/null ; then
if ! find "$work_dir" -type f -print0 | xargs -0 chmod 0644 2>/dev/null ; then
if ! find "$work_dir" -type f | xargs chmod 0644 2>/dev/null ; then
find "$work_dir" -type f -exec chmod 0644 {} \;
fi
fi
fi
# If enabled, set file access mode for all production signature database files to 0644.
if [ "$setmode" = "yes" ] ; then
if ! find "$clam_dbs" -type f -exec chmod 0644 {} + 2>/dev/null ; then
if ! find "$clam_dbs" -type f -print0 | xargs -0 chmod 0644 2>/dev/null ; then
if ! find "$clam_dbs" -type f | xargs chmod 0644 2>/dev/null ; then
find "$clam_dbs" -type f -exec chmod 0644 {} \;
fi
fi
fi
fi
# Reload all clamd databases if updates detected and $reload_dbs" is
# set to "yes", and neither $reload_opt nor $do_clamd_reload are null.
if [ "$reload_dbs" = "yes" -a -z "$reload_opt" ]
then
echo ""
echo "********************************************************************************************"
echo "* Check the script's configuration file, 'reload_dbs' enabled but no 'reload_opt' selected *"
echo "********************************************************************************************"
log "WARNING - Check the script's configuration file, 'reload_dbs' enabled but no 'reload_opt' selected"
elif [ "$reload_dbs" = "yes" -a "$do_clamd_reload" = "1" -a -n "$reload_opt" ] ; then
comment ""
comment "================================================="
comment "= Update(s) detected, reloaded ClamAV databases ="
comment "================================================="
log "INFO - Update(s) detected, reloaded ClamAV databases"
$reload_opt
elif [ "$reload_dbs" = "yes" -a "$do_clamd_reload" = "2" -a -n "$reload_opt" ] ; then
comment ""
comment "==========================================================="
comment "= Database removal(s) detected, reloaded ClamAV databases ="
comment "==========================================================="
log "INFO - Database removal(s) detected, reloaded ClamAV databases"
$reload_opt
elif [ "$reload_dbs" = "yes" -a "$do_clamd_reload" = "3" -a -n "$reload_opt" ] ; then
comment ""
comment "==========================================================="
comment "= File 'local.ign' has changed, reloaded ClamAV databases ="
comment "==========================================================="
log "INFO - File 'local.ign' has changed, reloaded ClamAV databases"
$reload_opt
elif [ "$reload_dbs" = "yes" -a "$do_clamd_reload" = "4" -a -n "$reload_opt" ] ; then
comment ""
comment "==================================================================="
comment "= File 'my-whitelist.ign2' has changed, reloaded ClamAV databases ="
comment "==================================================================="
log "INFO - File 'my-whitelist.ign2' has changed, reloaded ClamAV databases"
$reload_opt
elif [ "$reload_dbs" = "yes" -a -z "$do_clamd_reload" ] ; then
comment ""
comment "==========================================================="
comment "= No updates detected, ClamAV databases were not reloaded ="
comment "==========================================================="
log "INFO - No updates detected, ClamAV databases were not reloaded"
else
comment ""
comment "==============================================================="
comment "= Database reload has been disabled in the configuration file ="
comment "==============================================================="
log "INFO - Database reload has been disabled in the configuration file"
true
fi
exit $?
|