#!/bin/sh # Update bogons file # Part of the pfSense project # https://www.pfsense.org # Global variables proc_error="" # Download and extract if necessary process_url() { local file=$1 local url=$2 local filename=${url##*/} local ext=${filename#*.} /usr/bin/fetch -a -w 600 -T 30 -q -o $file "${url}" if [ ! -f $file ]; then echo "Could not download ${url}" | logger proc_error="true" fi case "$ext" in tar) mv $file $file.tmp /usr/bin/tar -xf $file.tmp -O > $file 2> /dev/null ;; tar.gz) mv $file $file.tmp /usr/bin/tar -xzf $file.tmp -O > $file 2> /dev/null ;; tgz) mv $file $file.tmp /usr/bin/tar -xzf $file.tmp -O > $file 2> /dev/null ;; tar.bz2) mv $file $file.tmp /usr/bin/tar -xjf $file.tmp -O > $file 2> /dev/null ;; *) ;; esac if [ -f $file.tmp ]; then rm $file.tmp fi if [ ! -f $file ]; then echo "Could not extract ${filename}" | logger proc_error="true" fi } echo "rc.update_bogons.sh is starting up." | logger # Sleep for some time, unless an argument is specified. if [ "$1" = "" ]; then # Grab a random value value=`od -A n -d -N2 /dev/random | awk '{ print $1 }'` echo "rc.update_bogons.sh is sleeping for $value" | logger sleep $value fi echo "rc.update_bogons.sh is beginning the update cycle." | logger # Load custom bogon configuration if [ -f /var/etc/bogon_custom ]; then . /var/etc/bogon_custom fi # Set default values if not overriden v4url=${v4url:-"https://files.pfsense.org/lists/fullbogons-ipv4.txt"} v6url=${v6url:-"https://files.pfsense.org/lists/fullbogons-ipv6.txt"} v4urlcksum=${v4urlcksum:-"${v4url}.md5"} v6urlcksum=${v6urlcksum:-"${v6url}.md5"} process_url /tmp/bogons "${v4url}" process_url /tmp/bogonsv6 "${v6url}" if [ "$proc_error" != "" ]; then # Relaunch and sleep sh /etc/rc.update_bogons.sh & exit fi BOGON_V4_CKSUM=`/usr/bin/fetch -T 30 -q -o - "${v4urlcksum}" | awk '{ print $4 }'` ON_DISK_V4_CKSUM=`md5 /tmp/bogons | awk '{ print $4 }'` BOGON_V6_CKSUM=`/usr/bin/fetch -T 30 -q -o - "${v6urlcksum}" | awk '{ print $4 }'` ON_DISK_V6_CKSUM=`md5 /tmp/bogonsv6 | awk '{ print $4 }'` if [ "$BOGON_V4_CKSUM" = "$ON_DISK_V4_CKSUM" ] || [ "$BOGON_V6_CKSUM" = "$ON_DISK_V6_CKSUM" ]; then # At least one of the downloaded checksums matches, so mount RW /etc/rc.conf_mount_rw ENTRIES_MAX=`pfctl -s memory | awk '/table-entries/ { print $4 }'` if [ "$BOGON_V4_CKSUM" = "$ON_DISK_V4_CKSUM" ]; then ENTRIES_TOT=`pfctl -vvsTables | awk '/Addresses/ {s+=$2}; END {print s}'` ENTRIES_V4=`pfctl -vvsTables | awk '/-\tbogons$/ {getline; print $2}'` LINES_V4=`wc -l /tmp/bogons | awk '{ print $1 }'` if [ $ENTRIES_MAX -gt $((2*ENTRIES_TOT-${ENTRIES_V4:-0}+LINES_V4)) ]; then egrep -v "^192.168.0.0/16|^172.16.0.0/12|^10.0.0.0/8" /tmp/bogons > /etc/bogons RESULT=`/sbin/pfctl -t bogons -T replace -f /etc/bogons 2>&1` echo "$RESULT" | awk '{ print "Bogons V4 file downloaded: " $0 }' | logger else echo "Not updating IPv4 bogons (increase table-entries limit)" | logger fi rm /tmp/bogons else echo "Could not download ${v4url} (checksum mismatch)" | logger checksum_error="true" fi if [ "$BOGON_V6_CKSUM" = "$ON_DISK_V6_CKSUM" ]; then BOGONS_V6_TABLE_COUNT=`pfctl -sTables | grep ^bogonsv6$ | wc -l | awk '{ print $1 }'` ENTRIES_TOT=`pfctl -vvsTables | awk '/Addresses/ {s+=$2}; END {print s}'` LINES_V6=`wc -l /tmp/bogonsv6 | awk '{ print $1 }'` if [ $BOGONS_V6_TABLE_COUNT -gt 0 ]; then ENTRIES_V6=`pfctl -vvsTables | awk '/-\tbogonsv6$/ {getline; print $2}'` if [ $ENTRIES_MAX -gt $((2*ENTRIES_TOT-${ENTRIES_V6:-0}+LINES_V6)) ]; then egrep -iv "^fc00::/7" /tmp/bogonsv6 > /etc/bogonsv6 RESULT=`/sbin/pfctl -t bogonsv6 -T replace -f /etc/bogonsv6 2>&1` echo "$RESULT" | awk '{ print "Bogons V6 file downloaded: " $0 }' | logger else echo "Not saving or updating IPv6 bogons (increase table-entries limit)" | logger fi else if [ $ENTRIES_MAX -gt $((2*ENTRIES_TOT+LINES_V6)) ]; then egrep -iv "^fc00::/7" /tmp/bogonsv6 > /etc/bogonsv6 echo "Bogons V6 file downloaded but not updating IPv6 bogons table because IPv6 Allow is off" | logger else echo "Not saving IPv6 bogons table (IPv6 Allow is off and table-entries limit is potentially too low)" | logger fi fi rm /tmp/bogonsv6 else echo "Could not download ${v6url} (checksum mismatch)" | logger checksum_error="true" fi # We mounted RW, so switch back to RO /etc/rc.conf_mount_ro fi if [ "$checksum_error" != "" ]; then # Relaunch and sleep sh /etc/rc.update_bogons.sh & exit fi echo "rc.update_bogons.sh is ending the update cycle." | logger