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firewall.sh
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firewall.sh
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#!/bin/sh
#############################################################################################################
# _____ _ _ __ #
# / ____| | | | / / #
# | (___ | | ___ _ _ __ ___| |_ __ __/ /_ #
# \___ \| |/ / | | | '_ \ / _ \ __| \ \ / / '_ \ #
# ____) | <| |_| | | | | __/ |_ \ V /| (_) | #
# |_____/|_|\_\\__, |_| |_|\___|\__| \_/ \___/ #
# __/ | #
# |___/ #
# #
## - 23/02/2019 - Asus Firewall Addition By Adamm v6.7.7 #
## https://github.com/Adamm00/IPSet_ASUS #
#############################################################################################################
export PATH=/sbin:/bin:/usr/sbin:/usr/bin$PATH
printf '\033[?7l'
clear
sed -n '2,14p' "$0"
export LC_ALL=C
mkdir -p /tmp/skynet/lists
ntptimer=0
while [ "$(nvram get ntp_ready)" = "0" ] && [ "$ntptimer" -lt "300" ]; do
ntptimer=$((ntptimer+1))
sleep 1
done
if [ "$ntptimer" -ge "300" ]; then logger -st Skynet "[*] NTP Failed To Start After 5 Minutes - Please Fix Immediately!"; echo; exit 1; fi
Red () {
printf -- '\033[1;31m%s\033[0m\n' "$1"
}
Grn () {
printf -- '\033[1;32m%s\033[0m\n' "$1"
}
Blue () {
printf -- '\033[1;36m%s\033[0m\n' "$1"
}
Ylow () {
printf -- '\033[1;33m%s\033[0m\n' "$1"
}
stime="$(date +%s)"
skynetloc="$(grep -ow "skynetloc=.* # Skynet" /jffs/scripts/firewall-start 2>/dev/null | grep -vE "^#" | awk '{print $1}' | cut -c 11-)"
skynetcfg="${skynetloc}/skynet.cfg"
skynetlog="${skynetloc}/skynet.log"
skynetevents="${skynetloc}/events.log"
skynetipset="${skynetloc}/skynet.ipset"
if [ -z "$skynetloc" ] && tty >/dev/null 2>&1; then
set "install"
fi
###############
#- Functions -#
###############
Kill_Lock () {
if [ -f "/tmp/skynet.lock" ] && [ -d "/proc/$(sed -n '2p' /tmp/skynet.lock)" ]; then
logger -st Skynet "[*] Killing Locked Processes ($(sed -n '1p' /tmp/skynet.lock)) (pid=$(sed -n '2p' /tmp/skynet.lock))"
logger -st Skynet "[*] $(ps | awk -v pid="$(sed -n '2p' /tmp/skynet.lock)" '$1 == pid')"
kill "$(sed -n '2p' /tmp/skynet.lock)"
rm -rf /tmp/skynet.lock
echo
fi
}
Check_Lock () {
if [ -f "/tmp/skynet.lock" ] && [ -d "/proc/$(sed -n '2p' /tmp/skynet.lock)" ] && [ "$(sed -n '2p' /tmp/skynet.lock)" != "$$" ]; then
if [ "$(($(date +%s)-$(sed -n '3p' /tmp/skynet.lock)))" -gt "1800" ]; then
Kill_Lock
else
logger -st Skynet "[*] Lock File Detected ($(sed -n '1p' /tmp/skynet.lock)) (pid=$(sed -n '2p' /tmp/skynet.lock)) - Exiting (cpid=$$)"
echo; exit 1
fi
fi
echo "$@" > /tmp/skynet.lock
echo "$$" >> /tmp/skynet.lock
date +%s >> /tmp/skynet.lock
lockskynet="true"
}
if [ ! -d "$skynetloc" ] && ! echo "$@" | grep -wqE "(install|uninstall|disable|update|restart|info)"; then
Check_Lock "$@"
usbtest="0"
if [ -z "$skynetloc" ]; then usbtest="10"; fi
while [ ! -d "$skynetloc" ] && [ "$usbtest" -le "10" ]; do
usbtest=$((usbtest+1))
logger -st Skynet "[*] USB Not Found - Sleeping For 10 Seconds ( Attempt $usbtest Of 10 )"
sleep 10
done
if [ ! -d "$skynetloc" ] || [ ! -w "$skynetloc" ]; then
logger -st Skynet "[*] Problem With USB Install Location - Please Fix Immediately!"
logger -st Skynet "[*] When Fixed Run ( sh $0 restart )"
echo; exit 1
fi
fi
if [ "$(nvram get wan0_proto)" = "pppoe" ] || [ "$(nvram get wan0_proto)" = "pptp" ] || [ "$(nvram get wan0_proto)" = "l2tp" ]; then
iface="ppp0"
else
iface="$(nvram get wan0_ifname)"
fi
Check_Swap () {
[ "$(wc -l < /proc/swaps)" -ge "2" ]
}
Check_Settings () {
if [ ! -f "$skynetcfg" ]; then
logger -st Skynet "[*] Configuration File Not Detected - Please Use ( sh $0 install ) To Continue"
echo; exit 1
fi
if [ -z "$syslogloc" ]; then syslogloc="/tmp/syslog.log"; fi
if [ -z "$syslog1loc" ]; then syslog1loc="/tmp/syslog.log-1"; fi
if [ -z "$iotblocked" ]; then iotblocked="disabled"; fi
if [ -z "$iotproto" ]; then iotproto="udp"; fi
if [ -z "$lookupcountry" ]; then lookupcountry="enabled"; fi
conflicting_scripts="(IPSet_Block.sh|malware-filter|privacy-filter|ipBLOCKer.sh|ya-malware-block.sh|iblocklist-loader.sh|firewall-reinstate.sh)$"
if find /jffs /tmp/mnt | grep -qE "$conflicting_scripts"; then
logger -st Skynet "[*] $(find /jffs /tmp/mnt | grep -E "$conflicting_scripts" | xargs) Detected - This Script Will Cause Conflicts! Please Remove Immediately."
fi
unset "swappartition" "swaplocation"
if grep -qE "^swapon " /jffs/scripts/post-mount; then
if Check_Swap; then
swaplocation="$(sed -n '2p' /proc/swaps | awk '{print $1}')"
if [ "$(grep -E "^swapon " /jffs/scripts/post-mount | awk '{print $2}')" != "$swaplocation" ]; then
logger -st Skynet "[*] Restoring Damaged Swap File ( $swaplocation )"
sed -i '\~swapon ~d' /jffs/scripts/post-mount
if [ "$(wc -l < /jffs/scripts/post-mount)" -lt "2" ]; then echo >> /jffs/scripts/post-mount; fi
sed -i "2i swapon $swaplocation # Skynet Firewall Addition" /jffs/scripts/post-mount
fi
else
sleep 10
swapon "$(grep -E "^swapon " /jffs/scripts/post-mount | awk '{print $2}')" 2>/dev/null
fi
elif grep -qF "swap" /jffs/configs/fstab; then
if Check_Swap; then
swappartition="$(sed -n '2p' /proc/swaps | awk '{print $1}')"
fi
else
findswap="$(find /tmp/mnt -name "myswap.swp")"
if [ -n "$findswap" ] && [ -f "$findswap" ]; then
logger -st Skynet "[*] Restoring Damaged Swap File ( $findswap )"
sed -i '\~swapon ~d' /jffs/scripts/post-mount
if [ "$(wc -l < /jffs/scripts/post-mount)" -lt "2" ]; then echo >> /jffs/scripts/post-mount; fi
sed -i "2i swapon $findswap # Skynet Firewall Addition" /jffs/scripts/post-mount
if ! Check_Swap; then swapon "$findswap"; fi
swaplocation="$findswap"
elif Check_Swap && ! grep -qF "partition" /proc/swaps; then
findswap="$(sed -n '2p' /proc/swaps | awk '{print $1}')"
if [ -n "$findswap" ] && [ -f "$findswap" ]; then
logger -st Skynet "[*] Restoring Damaged Swap File ( $findswap )"
sed -i '\~swapon ~d' /jffs/scripts/post-mount
if [ "$(wc -l < /jffs/scripts/post-mount)" -lt "2" ]; then echo >> /jffs/scripts/post-mount; fi
sed -i "2i swapon $findswap # Skynet Firewall Addition" /jffs/scripts/post-mount
swaplocation="$findswap"
fi
fi
fi
if [ -n "$swaplocation" ] && [ ! -f "$swaplocation" ]; then
logger -st Skynet "[*] SWAP File Missing ( $swaplocation ) - Fix This By Running ( $0 debug swap uninstall )"
echo; exit 1
elif [ -n "$swappartition" ] && ! Check_Swap; then
logger -st Skynet "[*] SWAP Partition Missing ( $swappartition ) - Please Investigate Manually"
echo; exit 1
elif [ -z "$swaplocation" ] && [ -z "$swappartition" ] && ! Check_Swap; then
logger -st Skynet "[*] Skynet Requires A SWAP File - Install One By Running ( $0 debug swap install )"
echo; exit 1
fi
if [ "$(nvram get fw_log_x)" != "drop" ] && [ "$(nvram get fw_log_x)" != "both" ]; then
nvram set fw_log_x=drop
fi
localver="$(Filter_Version < "$0")"
if [ "$banmalwareupdate" = "daily" ]; then
Load_Cron "banmalwaredaily"
elif [ "$banmalwareupdate" = "weekly" ]; then
Load_Cron "banmalwareweekly"
fi
if [ "$autoupdate" = "enabled" ]; then
Load_Cron "autoupdate"
else
Load_Cron "checkupdate"
fi
if [ -d "/opt/bin" ] && [ ! -L "/opt/bin/firewall" ]; then
ln -s /jffs/scripts/firewall /opt/bin
fi
if [ "$(nvram get jffs2_scripts)" != "1" ]; then
nvram set jffs2_scripts=1
logger -st Skynet "[*] Custom JFFS Scripts Enabled - Please Manually Reboot To Apply Changes"
fi
if [ "$(nvram get fw_enable_x)" != "1" ]; then
nvram set fw_enable_x=1
restartfirewall="1"
fi
if [ -f /opt/share/diversion/.conf/diversion.conf ]; then
divlocation="/opt/share/diversion"
if ! grep -qE "bfPlusHosts=on" "${divlocation}/.conf/diversion.conf"; then
if [ ! -f "${divlocation}/AddPlusHosts" ] && [ ! -f "${divlocation}/AddPlusHostsDismissed" ]; then
touch "${divlocation}/AddPlusHosts"
fi
fi
fi
if [ -f "/opt/var/log/dnsmasq.log" ]; then
extendedstats="enabled"
else
extendedstats="disabled"
fi
if [ -z "$fastswitch" ]; then fastswitch="disabled"; fi
}
Check_Connection () {
livecheck="0"
while [ "$livecheck" != "4" ]; do
if ping -q -w3 -c1 google.com >/dev/null 2>&1; then
break
else
if ping -q -w3 -c1 github.com >/dev/null 2>&1; then
break
else
if ping -q -w3 -c1 snbforums.com >/dev/null 2>&1; then
break
else
livecheck=$((livecheck+1))
if [ "$livecheck" != "4" ]; then
echo "[*] Internet Connectivity Error"
sleep 10
else
return "1"
fi
fi
fi
fi
done
}
Check_Files () {
if [ ! -f "/jffs/scripts/firewall-start" ]; then
echo "#!/bin/sh" > /jffs/scripts/firewall-start
echo >> /jffs/scripts/firewall-start
elif [ -f "/jffs/scripts/firewall-start" ] && ! head -1 /jffs/scripts/firewall-start | grep -qE "^#!/bin/sh"; then
sed -i '1s~^~#!/bin/sh\n~' /jffs/scripts/firewall-start
fi
if [ ! -f "/jffs/scripts/services-stop" ]; then
echo "#!/bin/sh" > /jffs/scripts/services-stop
echo >> /jffs/scripts/services-stop
elif [ -f "/jffs/scripts/services-stop" ] && ! head -1 /jffs/scripts/services-stop | grep -qE "^#!/bin/sh"; then
sed -i '1s~^~#!/bin/sh\n~' /jffs/scripts/services-stop
fi
if [ ! -f "/jffs/scripts/post-mount" ]; then
echo "#!/bin/sh" > /jffs/scripts/post-mount
echo >> /jffs/scripts/post-mount
elif [ -f "/jffs/scripts/post-mount" ] && ! head -1 /jffs/scripts/post-mount | grep -qE "^#!/bin/sh"; then
sed -i '1s~^~#!/bin/sh\n~' /jffs/scripts/post-mount
fi
if [ ! -f "/jffs/scripts/unmount" ]; then
echo "#!/bin/sh" > /jffs/scripts/unmount
echo >> /jffs/scripts/unmount
elif [ -f "/jffs/scripts/unmount" ] && ! head -1 /jffs/scripts/unmount | grep -qE "^#!/bin/sh"; then
sed -i '1s~^~#!/bin/sh\n~' /jffs/scripts/unmount
fi
if [ ! -f "/jffs/configs/fstab" ]; then
touch "/jffs/configs/fstab"
fi
if [ "$1" = "verify" ] && ! grep -qF "# Skynet" /jffs/scripts/services-stop; then
echo "sh /jffs/scripts/firewall save # Skynet Firewall Addition" >> /jffs/scripts/services-stop
fi
if [ "$(wc -l < /jffs/scripts/post-mount)" -lt "2" ]; then echo >> /jffs/scripts/post-mount; fi
chmod 755 "/jffs/scripts/firewall" "/jffs/scripts/firewall-start" "/jffs/scripts/services-stop" "/jffs/scripts/post-mount" "/jffs/scripts/unmount" "/jffs/configs/fstab"
}
Check_Security () {
if [ "$securemode" = "enabled" ]; then
if [ "$(nvram get sshd_enable)" = "1" ] && [ "$(uname -o)" = "ASUSWRT-Merlin" ]; then
logger -st Skynet "[!] Insecure Setting Detected - Disabling WAN SSH Access"
nvram set sshd_enable="2"
nvram commit
restartfirewall="1"
fi
if [ "$(nvram get sshd_wan)" = "1" ] && [ "$(uname -o)" = "ASUSWRT-Merlin-LTS" ]; then
logger -st Skynet "[!] Insecure Setting Detected - Disabling WAN SSH Access"
nvram set sshd_wan="0"
nvram commit
restartfirewall="1"
fi
if [ "$(nvram get misc_http_x)" = "1" ]; then
logger -st Skynet "[!] Insecure Setting Detected - Disabling WAN GUI Access"
nvram set misc_http_x="0"
nvram commit
restartfirewall="1"
fi
if [ "$(nvram get pptpd_enable)" = "1" ] && nvram get pptpd_clientlist | grep -qE 'i[0-9]{7}|p[0-9]{7}'; then
logger -st Skynet "[!] PPTP VPN Server Shows Signs Of Compromise - Investigate Immediately!"
nvram set pptpd_enable="0"
nvram set pptpd_broadcast="0"
nvram commit
echo "[i] Stopping PPTP Service"
service stop_pptpd
echo "[i] Restarting Samba Service"
service restart_samba
restartfirewall="1"
fi
if [ -e "/var/run/tor" ] || [ -e "/var/run/torrc" ] || [ -e "/var/run/tord" ] || [ -e "/var/run/vpnfilterm" ] || [ -e "/var/run/vpnfilterw" ]; then
logger -st Skynet "[!] Suspected VPNFilter Malware Found - Investigate Immediately!"
logger -st Skynet "[!] Caching Potential VPNFilter Malware: ${skynetloc}/vpnfilter.tar.gz"
tar -czf "${skynetloc}/vpnfilter.tar.gz" "/var/run/tor" "/var/run/torrc" "/var/run/tord" "/var/run/vpnfilterm" "/var/run/vpnfilterw" >/dev/null 2>&1
rm -rf "/var/run/tor" "/var/run/torrc" "/var/run/tord" "/var/run/vpnfilterm" "/var/run/vpnfilterw"
restartfirewall="1"
fi
fi
}
Clean_Temp () {
rm -rf /tmp/skynet/*
mkdir -p /tmp/skynet/lists
}
Unload_IPTables () {
iptables -t raw -D PREROUTING -i "$iface" -m set ! --match-set Skynet-Whitelist src -m set --match-set Skynet-Master src -j DROP 2>/dev/null
iptables -t raw -D PREROUTING -i br0 -m set ! --match-set Skynet-Whitelist dst -m set --match-set Skynet-Master dst -j DROP 2>/dev/null
iptables -t raw -D OUTPUT -m set ! --match-set Skynet-Whitelist dst -m set --match-set Skynet-Master dst -j DROP 2>/dev/null
iptables -D SSHBFP -m recent --update --seconds 60 --hitcount 4 --name SSH --rsource -j SET --add-set Skynet-Blacklist src 2>/dev/null
iptables -D SSHBFP -m recent --update --seconds 60 --hitcount 4 --name SSH --rsource -j LOG --log-prefix "[BLOCKED - NEW BAN] " --log-tcp-sequence --log-tcp-options --log-ip-options 2>/dev/null
iptables -D logdrop -m state --state NEW -j LOG --log-prefix "DROP " --log-tcp-sequence --log-tcp-options --log-ip-options 2>/dev/null
ip6tables -D logdrop -m state --state NEW -j LOG --log-prefix "DROP " --log-tcp-sequence --log-tcp-options --log-ip-options 2>/dev/null
}
Load_IPTables () {
if [ "$filtertraffic" = "all" ] || [ "$filtertraffic" = "inbound" ]; then
iptables -t raw -I PREROUTING -i "$iface" -m set ! --match-set Skynet-Whitelist src -m set --match-set Skynet-Master src -j DROP 2>/dev/null
fi
if [ "$filtertraffic" = "all" ] || [ "$filtertraffic" = "outbound" ]; then
iptables -t raw -I PREROUTING -i br0 -m set ! --match-set Skynet-Whitelist dst -m set --match-set Skynet-Master dst -j DROP 2>/dev/null
iptables -t raw -I OUTPUT -m set ! --match-set Skynet-Whitelist dst -m set --match-set Skynet-Master dst -j DROP 2>/dev/null
fi
if [ "$(nvram get sshd_enable)" = "1" ] && [ "$(nvram get sshd_bfp)" = "1" ] && [ "$(uname -o)" = "ASUSWRT-Merlin" ] && [ "$(nvram get switch_wantag)" != "movistar" ]; then
pos1="$(iptables --line -nL SSHBFP | grep -F "seconds: 60 hit_count: 4" | grep -E 'DROP|logdrop' | awk '{print $1}')"
iptables -I SSHBFP "$pos1" -m recent --update --seconds 60 --hitcount 4 --name SSH --rsource -j SET --add-set Skynet-Master src 2>/dev/null
iptables -I SSHBFP "$pos1" -m recent --update --seconds 60 --hitcount 4 --name SSH --rsource -j LOG --log-prefix "[BLOCKED - NEW BAN] " --log-tcp-sequence --log-tcp-options --log-ip-options 2>/dev/null
fi
}
Unload_DebugIPTables () {
iptables -t raw -D PREROUTING -i "$iface" -m set ! --match-set Skynet-Whitelist src -m set --match-set Skynet-Master src -j LOG --log-prefix "[BLOCKED - INBOUND] " --log-tcp-sequence --log-tcp-options --log-ip-options 2>/dev/null
iptables -t raw -D PREROUTING -i br0 -m set ! --match-set Skynet-Whitelist dst -m set --match-set Skynet-Master dst -j LOG --log-prefix "[BLOCKED - OUTBOUND] " --log-tcp-sequence --log-tcp-options --log-ip-options 2>/dev/null
iptables -t raw -D OUTPUT -m set ! --match-set Skynet-Whitelist dst -m set --match-set Skynet-Master dst -j LOG --log-prefix "[BLOCKED - OUTBOUND] " --log-tcp-sequence --log-tcp-options --log-ip-options 2>/dev/null
iptables -D logdrop -m state --state NEW -j LOG --log-prefix "[BLOCKED - INVALID] " --log-tcp-sequence --log-tcp-options --log-ip-options 2>/dev/null
iptables -D FORWARD -i br0 -m set --match-set Skynet-IOT src ! -o tun2+ -j LOG --log-prefix "[BLOCKED - IOT] " --log-tcp-sequence --log-tcp-options --log-ip-options 2>/dev/null
}
Load_DebugIPTables () {
if [ "$debugmode" = "enabled" ]; then
if [ "$filtertraffic" = "all" ] || [ "$filtertraffic" = "inbound" ]; then
pos2="$(iptables --line -nL PREROUTING -t raw | grep -F "Skynet-Master src" | grep -F "DROP" | awk '{print $1}')"
iptables -t raw -I PREROUTING "$pos2" -i "$iface" -m set ! --match-set Skynet-Whitelist src -m set --match-set Skynet-Master src -j LOG --log-prefix "[BLOCKED - INBOUND] " --log-tcp-sequence --log-tcp-options --log-ip-options 2>/dev/null
fi
if [ "$filtertraffic" = "all" ] || [ "$filtertraffic" = "outbound" ]; then
pos3="$(iptables --line -nL PREROUTING -t raw | grep -F "Skynet-Master dst" | grep -F "DROP" | awk '{print $1}')"
iptables -t raw -I PREROUTING "$pos3" -i br0 -m set ! --match-set Skynet-Whitelist dst -m set --match-set Skynet-Master dst -j LOG --log-prefix "[BLOCKED - OUTBOUND] " --log-tcp-sequence --log-tcp-options --log-ip-options 2>/dev/null
pos4="$(iptables --line -nL OUTPUT -t raw | grep -F "Skynet-Master dst" | grep -F "DROP" | awk '{print $1}')"
iptables -t raw -I OUTPUT "$pos4" -m set ! --match-set Skynet-Whitelist dst -m set --match-set Skynet-Master dst -j LOG --log-prefix "[BLOCKED - OUTBOUND] " --log-tcp-sequence --log-tcp-options --log-ip-options 2>/dev/null
fi
if [ "$(nvram get fw_log_x)" = "drop" ] || [ "$(nvram get fw_log_x)" = "both" ] && [ "$loginvalid" = "enabled" ]; then
iptables -I logdrop -m state --state NEW -j LOG --log-prefix "[BLOCKED - INVALID] " --log-tcp-sequence --log-tcp-options --log-ip-options 2>/dev/null
fi
pos5="$(iptables --line -nL FORWARD | grep -F "Skynet-IOT" | grep -F "DROP" | awk '{print $1}')"
iptables -I FORWARD "$pos5" -i br0 -m set --match-set Skynet-IOT src ! -o tun2+ -j LOG --log-prefix "[BLOCKED - IOT] " --log-tcp-sequence --log-tcp-options --log-ip-options 2>/dev/null
fi
}
Unload_IOTTables () {
iptables -D FORWARD -i br0 -m set --match-set Skynet-IOT src ! -o tun2+ -j DROP 2>/dev/null
if [ -n "$iotports" ]; then
if [ "$iotproto" = "all" ] || [ "$iotproto" = "udp" ]; then
iptables -D FORWARD -i br0 -m set --match-set Skynet-IOT src -o "$iface" -p udp -m udp -m multiport --dports "$iotports" -j ACCEPT 2>/dev/null
fi
if [ "$iotproto" = "all" ] || [ "$iotproto" = "tcp" ]; then
iptables -D FORWARD -i br0 -m set --match-set Skynet-IOT src -o "$iface" -p tcp -m tcp -m multiport --dports "$iotports" -j ACCEPT 2>/dev/null
fi
else
if [ "$iotproto" = "all" ] || [ "$iotproto" = "udp" ]; then
iptables -D FORWARD -i br0 -m set --match-set Skynet-IOT src -o "$iface" -p udp -m udp --dport 123 -j ACCEPT 2>/dev/null
fi
if [ "$iotproto" = "all" ] || [ "$iotproto" = "tcp" ]; then
iptables -D FORWARD -i br0 -m set --match-set Skynet-IOT src -o "$iface" -p tcp -m tcp --dport 123 -j ACCEPT 2>/dev/null
fi
fi
}
Load_IOTTables () {
iptables -I FORWARD -i br0 -m set --match-set Skynet-IOT src ! -o tun2+ -j DROP 2>/dev/null
if [ -n "$iotports" ]; then
if [ "$iotproto" = "all" ] || [ "$iotproto" = "udp" ]; then
iptables -I FORWARD -i br0 -m set --match-set Skynet-IOT src -o "$iface" -p udp -m udp -m multiport --dports "$iotports" -j ACCEPT 2>/dev/null
fi
if [ "$iotproto" = "all" ] || [ "$iotproto" = "tcp" ]; then
iptables -I FORWARD -i br0 -m set --match-set Skynet-IOT src -o "$iface" -p tcp -m tcp -m multiport --dports "$iotports" -j ACCEPT 2>/dev/null
fi
else
if [ "$iotproto" = "all" ] || [ "$iotproto" = "udp" ]; then
iptables -I FORWARD -i br0 -m set --match-set Skynet-IOT src -o "$iface" -p udp -m udp --dport 123 -j ACCEPT 2>/dev/null
fi
if [ "$iotproto" = "all" ] || [ "$iotproto" = "tcp" ]; then
iptables -I FORWARD -i br0 -m set --match-set Skynet-IOT src -o "$iface" -p tcp -m tcp --dport 123 -j ACCEPT 2>/dev/null
fi
fi
}
Check_IPSets () {
ipset -L -n Skynet-Whitelist >/dev/null 2>&1 || { fail="1"; return 1; }
ipset -L -n Skynet-Blacklist >/dev/null 2>&1 || { fail="2"; return 1; }
ipset -L -n Skynet-BlockedRanges >/dev/null 2>&1 || { fail="3"; return 1; }
ipset -L -n Skynet-Master >/dev/null 2>&1 || { fail="4"; return 1; }
ipset -L -n Skynet-IOT >/dev/null 2>&1 || { fail="5"; return 1; }
}
Check_IPTables () {
if [ "$filtertraffic" = "all" ] || [ "$filtertraffic" = "inbound" ]; then
iptables -t raw -C PREROUTING -i "$iface" -m set ! --match-set Skynet-Whitelist src -m set --match-set Skynet-Master src -j DROP 2>/dev/null || { fail="6"; return 1; }
fi
if [ "$filtertraffic" = "all" ] || [ "$filtertraffic" = "outbound" ]; then
iptables -t raw -C PREROUTING -i br0 -m set ! --match-set Skynet-Whitelist dst -m set --match-set Skynet-Master dst -j DROP 2>/dev/null || { fail="7"; return 1; }
iptables -t raw -C OUTPUT -m set ! --match-set Skynet-Whitelist dst -m set --match-set Skynet-Master dst -j DROP 2>/dev/null || { fail="8"; return 1; }
fi
if [ "$(nvram get sshd_enable)" = "1" ] && [ "$(nvram get sshd_bfp)" = "1" ] && [ "$(uname -o)" = "ASUSWRT-Merlin" ] && [ "$(nvram get switch_wantag)" != "movistar" ]; then
iptables -C SSHBFP -m recent --update --seconds 60 --hitcount 4 --name SSH --rsource -j SET --add-set Skynet-Master src 2>/dev/null || { fail="9"; return 1; }
iptables -C SSHBFP -m recent --update --seconds 60 --hitcount 4 --name SSH --rsource -j LOG --log-prefix "[BLOCKED - NEW BAN] " --log-tcp-sequence --log-tcp-options --log-ip-options 2>/dev/null || { fail="10"; return 1; }
fi
iptables -C FORWARD -i br0 -m set --match-set Skynet-IOT src ! -o tun2+ -j DROP 2>/dev/null || { fail="11"; return 1; }
if [ -n "$iotports" ]; then
if [ "$iotproto" = "all" ] || [ "$iotproto" = "udp" ]; then
iptables -C FORWARD -i br0 -m set --match-set Skynet-IOT src -o "$iface" -p udp -m udp -m multiport --dports "$iotports" -j ACCEPT 2>/dev/null || { fail="12"; return 1; }
fi
if [ "$iotproto" = "all" ] || [ "$iotproto" = "tcp" ]; then
iptables -C FORWARD -i br0 -m set --match-set Skynet-IOT src -o "$iface" -p tcp -m tcp -m multiport --dports "$iotports" -j ACCEPT 2>/dev/null || { fail="13"; return 1; }
fi
else
if [ "$iotproto" = "all" ] || [ "$iotproto" = "udp" ]; then
iptables -C FORWARD -i br0 -m set --match-set Skynet-IOT src -o "$iface" -p udp -m udp --dport 123 -j ACCEPT 2>/dev/null || { fail="14"; return 1; }
fi
if [ "$iotproto" = "all" ] || [ "$iotproto" = "tcp" ]; then
iptables -C FORWARD -i br0 -m set --match-set Skynet-IOT src -o "$iface" -p tcp -m tcp --dport 123 -j ACCEPT 2>/dev/null || { fail="15"; return 1; }
fi
fi
if [ "$debugmode" = "enabled" ]; then
if [ "$filtertraffic" = "all" ] || [ "$filtertraffic" = "inbound" ]; then
iptables -t raw -C PREROUTING -i "$iface" -m set ! --match-set Skynet-Whitelist src -m set --match-set Skynet-Master src -j LOG --log-prefix "[BLOCKED - INBOUND] " --log-tcp-sequence --log-tcp-options --log-ip-options 2>/dev/null || { fail="16"; return 1; }
fi
if [ "$filtertraffic" = "all" ] || [ "$filtertraffic" = "outbound" ]; then
iptables -t raw -C PREROUTING -i br0 -m set ! --match-set Skynet-Whitelist dst -m set --match-set Skynet-Master dst -j LOG --log-prefix "[BLOCKED - OUTBOUND] " --log-tcp-sequence --log-tcp-options --log-ip-options 2>/dev/null || { fail="17"; return 1; }
iptables -t raw -C OUTPUT -m set ! --match-set Skynet-Whitelist dst -m set --match-set Skynet-Master dst -j LOG --log-prefix "[BLOCKED - OUTBOUND] " --log-tcp-sequence --log-tcp-options --log-ip-options 2>/dev/null || { fail="18"; return 1; }
fi
if [ "$(nvram get fw_log_x)" = "drop" ] || [ "$(nvram get fw_log_x)" = "both" ] && [ "$loginvalid" = "enabled" ]; then
iptables -C logdrop -m state --state NEW -j LOG --log-prefix "[BLOCKED - INVALID] " --log-tcp-sequence --log-tcp-options --log-ip-options 2>/dev/null || { fail="19"; return 1; }
fi
iptables -C FORWARD -i br0 -m set --match-set Skynet-IOT src ! -o tun2+ -j LOG --log-prefix "[BLOCKED - IOT] " --log-tcp-sequence --log-tcp-options --log-ip-options 2>/dev/null || { fail="20"; return 1; }
fi
}
Unload_IPSets () {
ipset -q destroy Skynet-Master
ipset -q destroy Skynet-Blacklist
ipset -q destroy Skynet-BlockedRanges
ipset -q destroy Skynet-Whitelist
ipset -q destroy Skynet-IOT
}
Unload_Cron () {
if [ -z "$1" ]; then set "all"; fi
for cron in "$@"; do
case "$cron" in
save)
cru d Skynet_save
;;
banmalware)
cru d Skynet_banmalware
;;
autoupdate)
cru d Skynet_autoupdate
;;
checkupdate)
cru d Skynet_checkupdate
;;
all)
cru d Skynet_save
cru d Skynet_banmalware
cru d Skynet_autoupdate
cru d Skynet_checkupdate
;;
*)
echo "[*] Error - No Cron Specified To Unload"
;;
esac
done
}
Load_Cron () {
if [ -z "$1" ]; then set "all"; fi
for cron in "$@"; do
case "$cron" in
save)
cru a Skynet_save "0 * * * * sh /jffs/scripts/firewall save"
;;
banmalwaredaily)
hour="$(date +%s | tail -c 2)"
cru a Skynet_banmalware "25 $hour * * * sh /jffs/scripts/firewall banmalware"
;;
banmalwareweekly)
hour="$(date +%s | tail -c 2)"
cru a Skynet_banmalware "25 $hour * * Mon sh /jffs/scripts/firewall banmalware"
;;
autoupdate)
cru a Skynet_autoupdate "25 1 * * Mon sh /jffs/scripts/firewall update"
;;
checkupdate)
cru a Skynet_checkupdate "25 1 * * Mon sh /jffs/scripts/firewall update check"
;;
*)
echo "[*] Error - No Cron Specified To Load"
;;
esac
done
}
Is_IP () {
grep -qE '^([0-9]{1,3}\.){3}[0-9]{1,3}$'
}
Is_Range () {
grep -qE '^([0-9]{1,3}\.){3}[0-9]{1,3}/[0-9]{1,2}$'
}
Is_IPRange () {
grep -qE '^([0-9]{1,3}\.){3}[0-9]{1,3}(/[0-9]{1,2})?$'
}
Is_MAC () {
grep -qE '^([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}$'
}
Is_Port () {
grep -qE '^[0-9]{1,5}$'
}
Strip_Domain () {
sed 's~http[s]*://~~;s~/.*~~;s~www\.~~g' | awk '!x[$0]++'
}
Domain_Lookup () {
nslookup "$(echo "$1" | Strip_Domain)" | grep -oE '([0-9]{1,3}\.){3}[0-9]{1,3}' | awk 'NR>2'
}
Extended_DNSStats () {
case "$1" in
1)
if [ "$lookupcountry" = "enabled" ]; then
country="($(curl -fsL --retry 3 "https://ipapi.co/$statdata/country/"))"
fi
printf "%-15s %-4s | %-56s | %-60s \\n" "$statdata" "$country" "https://otx.alienvault.com/indicator/ip/${statdata}" "$(grep -F "$statdata" /tmp/skynet/skynetstats.txt | awk '{print $1}' | xargs)"
;;
2)
hits="$(echo "$statdata" | awk '{print $1}')"
ipaddr="$(echo "$statdata" | awk '{print $2}')"
if [ "$lookupcountry" = "enabled" ]; then
country="($(curl -fsL --retry 3 "https://ipapi.co/$ipaddr/country/"))"
fi
printf "%-10s | %-15s %-4s | %-55s | %-60s\\n" "${hits}x" "${ipaddr}" "${country}" "https://otx.alienvault.com/indicator/ip/${ipaddr}" "$(grep -F "$ipaddr" /tmp/skynet/skynetstats.txt | awk '{print $1}' | xargs)"
;;
*)
echo "[*] Error - No Stats Specified To Load"
;;
esac
}
Display_Header () {
case "$1" in
1)
printf "\\n\\n%-20s | %-56s | %-60s\\n" "--------------" "--------------" "----------------------"
printf "%-20s | %-56s | %-60s\\n" "| IP Address |" "| AlienVault |" "| Associated Domains |"
printf "%-20s | %-56s | %-60s\\n\\n" "--------------" "--------------" "----------------------"
;;
2)
printf "\\n\\n%-10s | %-20s | %-55s | %-60s\\n" "--------" "--------------" "--------------" "----------------------"
printf "%-10s | %-20s | %-55s | %-60s\\n" "| Hits |" "| IP Address |" "| AlienVault |" "| Associated Domains |"
printf "%-10s | %-20s | %-55s | %-60s\\n\\n" "--------" "--------------" "--------------" "----------------------"
;;
3)
printf "\\n\\n%-10s | %-10s | %-60s\\n" "--------" "--------" "--------------"
printf "%-10s | %-10s | %-60s\\n" "| Hits |" "| Port |" "| SpeedGuide |"
printf "%-10s | %-10s | %-60s\\n\\n" "--------" "--------" "--------------"
;;
4)
printf "\\n\\n%-10s | %-16s | %-60s\\n" "--------" "------------" "---------------"
printf "%-10s | %-16s | %-60s\\n" "| Hits |" "| Local IP |" "| Device Name |"
printf "%-10s | %-16s | %-60s\\n\\n" "--------" "------------" "---------------"
;;
5)
printf "\\n\\n%-20s | %-40s\\n" "--------------" "---------"
printf "%-20s | %-40s\\n" "| IP Address |" "| List |"
printf "%-20s | %-40s\\n\\n" "--------------" "---------"
;;
6)
printf "\\n\\n%-40s | %-16s | %-20s | %-15s\\n" "---------------" "------------" "---------------" "----------"
printf "%-40s | %-16s | %-20s | %-15s\\n" "| Device Name |" "| Local IP |" "| MAC Address |" "| Status |"
printf "%-40s | %-16s | %-20s | %-15s\\n\\n" "---------------" "------------" "---------------" "----------"
;;
7)
printf "\\n\\n%-35s | %-8s\\n" "--------------------" "----------"
printf "%-35s | %-8s\\n" "| Test Description |" "| Result |"
printf "%-35s | %-8s\\n\\n" "--------------------" "----------"
;;
8)
printf "\\n\\n%-35s | %-8s\\n" "-----------" "----------"
printf "%-35s | %-8s\\n" "| Setting |" "| Status |"
printf "%-35s | %-8s\\n\\n" "----------" "----------"
;;
9)
printf "\\n\\n=============================================================================================================\\n\\n\\n"
;;
10)
printf "\\n=============================================================================================================\\n\\n\\n"
;;
11)
printf "%-10s | %-18s | %-10s | %-18s | %-10s | %-20s\\n" "---------" "-------------" "---------" "------------------" "---------" "------------------"
printf "%-10s | %-18s | %-10s | %-18s | %-10s | %-20s\\n" "| Proto |" "| Source IP |" "| SPort |" "| Destination IP |" "| DPort |" "| Identification |"
printf "%-10s | %-18s | %-10s | %-18s | %-10s | %-20s\\n\\n" "---------" "-------------" "---------" "------------------" "---------" "------------------"
;;
*)
echo "[*] Error - No Header Specified To Load"
;;
esac
}
Display_Result () {
result="$(Grn "[$(($(date +%s) - btime))s]")"
printf "%-8s\\n" "$result"
}
Filter_Version () {
grep -m1 -oE 'v[0-9]{1,2}([.][0-9]{1,2})([.][0-9]{1,2})'
}
Filter_Date () {
grep -m1 -oE '[0-9]{1,2}([/][0-9]{1,2})([/][0-9]{1,4})'
}
Filter_IP () {
grep -E '^([0-9]{1,3}\.){3}[0-9]{1,3}$'
}
Filter_OutIP () {
grep -vE '^([0-9]{1,3}\.){3}[0-9]{1,3}$'
}
Filter_PrivateIP () {
grep -vE '(^127\.)|(^10\.)|(^172\.1[6-9]\.)|(^172\.2[0-9]\.)|(^172\.3[0-1]\.)|(^192\.168\.)|(^0.)|(^169\.254\.)|(^22[4-9]\.)|(^23[0-9]\.)|(^255\.255\.255\.255)|(^8\.8\.8\.8)|(^8\.8\.4\.4)(^1\.1\.1\.1)|(^1\.0\.0\.1)'
}
Filter_PrivateSRC () {
grep -E '(SRC=127\.)|(SRC=10\.)|(SRC=172\.1[6-9]\.)|(SRC=172\.2[0-9]\.)|(SRC=172\.3[0-1]\.)|(SRC=192\.168\.)|(SRC=0.)|(SRC=169\.254\.)|(SRC=22[4-9]\.)|(SRC=23[0-9]\.)|(SRC=255\.255\.255\.255)'
}
Filter_PrivateDST () {
grep -E '(DST=127\.)|(DST=10\.)|(DST=172\.1[6-9]\.)|(DST=172\.2[0-9]\.)|(DST=172\.3[0-1]\.)|(DST=192\.168\.)|(DST=0.)|(DST=169\.254\.)|(DST=22[4-9]\.)|(DST=23[0-9]\.)|(DST=255\.255\.255\.255)'
}
Spinner_End () {
if [ -f /tmp/skynet/spinstart ]; then
pider="$(cat /tmp/skynet/spinstart)"
rm -rf /tmp/skynet/spinstart
if [ -d "/proc/$pider" ]; then kill "$pider"; fi
fi
}
Spinner_Start () {
Spinner_End
touch "/tmp/skynet/spinstart"
{ while [ -f "/tmp/skynet/spinstart" ]; do
for c in \*-- -\*- --\* ; do
printf '\033[1;32m%s\033[0m\b\b\b' "$c"
usleep 250000
done
printf ' \b\b\b'
done; } &
echo "$!" > /tmp/skynet/spinstart
}
Save_IPSets () {
if Check_IPSets && Check_IPTables; then
{ ipset save Skynet-Whitelist; ipset save Skynet-Blacklist; ipset save Skynet-BlockedRanges; ipset save Skynet-Master; ipset save Skynet-IOT; } > "$skynetipset" 2>/dev/null
fi
}
Unban_PrivateIP () {
if [ "$unbanprivateip" = "enabled" ] && [ "$debugmode" = "enabled" ]; then
grep -F "INBOUND" "$syslogloc" | Filter_PrivateSRC | grep -oE 'SRC=[0-9,\.]*' | cut -c 5- | awk '!x[$0]++' | while IFS= read -r "ip"; do
ipset -q -A Skynet-Whitelist "$ip" comment "PrivateIP"
ipset -q -D Skynet-Blacklist "$ip"
sed -i "\\~SRC=${ip} ~d" "$syslogloc" "$skynetevents"
done
grep -F "OUTBOUND" "$syslogloc" | Filter_PrivateDST | grep -oE 'DST=[0-9,\.]*' | cut -c 5- | awk '!x[$0]++' | while IFS= read -r "ip"; do
ipset -q -A Skynet-Whitelist "$ip" comment "PrivateIP"
ipset -q -D Skynet-Blacklist "$ip"
sed -i "\\~DST=${ip} ~d" "$syslogloc"
sed -i "\\~SRC=${ip} ~d" "$skynetevents"
done
fi
}
Refresh_AiProtect () {
if [ "$banaiprotect" = "enabled" ] && [ -f /jffs/.sys/AiProtectionMonitor/AiProtectionMonitor.db ]; then
if [ -f /opt/bin/opkg ] && [ ! -f /opt/bin/sqlite3 ]; then
opkg update && opkg install sqlite3-cli
fi
if [ -f /opt/bin/opkg ] && [ -f /opt/bin/sqlite3 ]; then
sed "\\~add Skynet-Blacklist ~!d;\\~BanAiProtect~!d;s~ comment.*~~;s~add~del~g" "$skynetipset" | ipset restore -!
sqlite3 /jffs/.sys/AiProtectionMonitor/AiProtectionMonitor.db "SELECT src FROM monitor;" | awk '!x[$0]++' | Filter_IP | Filter_PrivateIP | awk '{printf "add Skynet-Blacklist %s comment \"BanAiProtect\"\n", $1 }' | ipset restore -!
sqlite3 /jffs/.sys/AiProtectionMonitor/AiProtectionMonitor.db "SELECT dst FROM monitor;" | awk '!x[$0]++' | Filter_OutIP | grep -v ":" | while IFS= read -r "domain"; do
for ip in $(Domain_Lookup "$domain" 2>/dev/null | Filter_PrivateIP); do
ipset -q -A Skynet-Blacklist "$ip" comment "BanAiProtect: $domain"
done &
done
wait
fi
fi
}
Refresh_MBans () {
if grep -qF "[Manual Ban] TYPE=Domain" "$skynetevents"; then
grep -F "[Manual Ban] TYPE=Domain" "$skynetevents" | awk '{print $9}' | awk '!x[$0]++' | sed 's~Host=~~g' > /tmp/skynet/mbans.list
sed -i '\~\[Manual Ban\] TYPE=Domain~d;' "$skynetevents"
sed "\\~add Skynet-Blacklist ~!d;\\~ManualBanD~!d;s~ comment.*~~;s~add~del~g" "$skynetipset" | ipset restore -!
while IFS= read -r "domain"; do
for ip in $(Domain_Lookup "$domain" | Filter_PrivateIP); do
ipset -q -A Skynet-Blacklist "$ip" comment "ManualBanD: $domain" && echo "$(date +"%b %d %T") Skynet: [Manual Ban] TYPE=Domain SRC=$ip Host=$domain " >> "$skynetevents"
done &
done < /tmp/skynet/mbans.list
wait
rm -rf /tmp/skynet/mbans.list
fi
}
Refresh_MWhitelist () {
if grep -qE "Manual Whitelist.* TYPE=Domain" "$skynetevents"; then
grep -E "Manual Whitelist.* TYPE=Domain" "$skynetevents" | awk '{print $9}' | awk '!x[$0]++' | sed 's~Host=~~g' > /tmp/skynet/mwhitelist.list
sed -i '\~\[Manual Whitelist\] TYPE=Domain~d;' "$skynetevents"
sed "\\~add Skynet-Whitelist ~!d;\\~ManualWlistD~!d;s~ comment.*~~;s~add~del~g" "$skynetipset" | ipset restore -!
while IFS= read -r "domain"; do
for ip in $(Domain_Lookup "$domain"); do
ipset -q -A Skynet-Whitelist "$ip" comment "ManualWlistD: $domain" && echo "$(date +"%b %d %T") Skynet: [Manual Whitelist] TYPE=Domain SRC=$ip Host=$domain " >> "$skynetevents"
done &
done < /tmp/skynet/mwhitelist.list
wait
cat /tmp/skynet/mwhitelist.list >> /jffs/shared-Skynet2-whitelist
rm -rf /tmp/skynet/mwhitelist.list
fi
}
Whitelist_Extra () {
echo "ipdeny.com
ipapi.co
speedguide.net
otx.alienvault.com
raw.githubusercontent.com
iplists.firehol.org
astrill.com
strongpath.net
snbforums.com
bin.entware.net
nwsrv-ns1.asus.com
$(nvram get "ntp_server0")
$(nvram get "ntp_server1")
$(nvram get "firmware_server")" > /jffs/shared-Skynet2-whitelist
}
Whitelist_CDN () {
sed '\~add Skynet-Whitelist ~!d;\~CDN-Whitelist~!d;s~ comment.*~~;s~add~del~g' "$skynetipset" | ipset restore -!
{
# Apple AS714 | Akamai AS12222 AS16625 | HighWinds AS33438 | Fastly AS54113
for asn in AS714 AS12222 AS16625 AS33438 AS54113; do
curl -fsL --retry 3 "https://ipinfo.io/$asn" | grep -oE '([0-9]{1,3}\.){3}[0-9]{1,3}/[0-9]{1,2}' | awk -v asn="$asn" '{printf "add Skynet-Whitelist %s comment \"CDN-Whitelist: %s \"\n", $1, asn }' &
done
wait
curl -fsL --retry 3 https://www.cloudflare.com/ips-v4 | grep -E '([0-9]{1,3}\.){3}[0-9]{1,3}/[0-9]{1,2}' | awk '{printf "add Skynet-Whitelist %s comment \"CDN-Whitelist: CloudFlare \"\n", $1 }'
curl -fsL --retry 3 https://ip-ranges.amazonaws.com/ip-ranges.json | grep -oE '([0-9]{1,3}\.){3}[0-9]{1,3}/[0-9]{1,2}' | awk '{printf "add Skynet-Whitelist %s comment \"CDN-Whitelist: Amazon \"\n", $1 }';
} | awk '!x[$0]++' | ipset restore -!
}
Whitelist_VPN () {
echo "add Skynet-Whitelist $(nvram get vpn_server1_sn)/24 comment \"nvram: vpn_server1_sn\"
add Skynet-Whitelist $(nvram get vpn_server2_sn)/24 comment \"nvram: vpn_server2_sn\"
add Skynet-Whitelist $(nvram get vpn_server_sn)/24 comment \"nvram: vpn_server_sn\"
add Skynet-Whitelist $(nvram get vpn_client1_addr)/24 comment \"nvram: vpn_client1_addr\"
add Skynet-Whitelist $(nvram get vpn_client2_addr)/24 comment \"nvram: vpn_client2_addr\"
add Skynet-Whitelist $(nvram get vpn_client3_addr)/24 comment \"nvram: vpn_client3_addr\"
add Skynet-Whitelist $(nvram get vpn_client4_addr)/24 comment \"nvram: vpn_client4_addr\"
add Skynet-Whitelist $(nvram get vpn_client5_addr)/24 comment \"nvram: vpn_client5_addr\"" | ipset restore -! 2>/dev/null
if [ -f "/dev/astrill/openvpn.conf" ]; then ipset -q -A Skynet-Whitelist "$(sed '\~remote ~!d;s~remote ~~' "/dev/astrill/openvpn.conf")/24" comment "nvram: Astrill_VPN"; fi
}
Whitelist_Shared () {
echo "add Skynet-Whitelist $(nvram get wan0_ipaddr)/32 comment \"nvram: wan0_ipaddr\"
add Skynet-Whitelist $(nvram get lan_ipaddr)/24 comment \"nvram: lan_ipaddr\"
add Skynet-Whitelist $(nvram get lan_netmask)/24 comment \"nvram: lan_netmask\"
add Skynet-Whitelist $(nvram get wan_dns1_x)/32 comment \"nvram: wan_dns1_x\"
add Skynet-Whitelist $(nvram get wan_dns2_x)/32 comment \"nvram: wan_dns2_x\"
add Skynet-Whitelist $(nvram get wan0_dns1_x)/32 comment \"nvram: wan0_dns1_x\"
add Skynet-Whitelist $(nvram get wan0_dns2_x)/32 comment \"nvram: wan0_dns2_x\"
add Skynet-Whitelist $(nvram get wan_dns | awk '{print $1}')/32 comment \"nvram: wan_dns\"
add Skynet-Whitelist $(nvram get wan_dns | awk '{print $2}')/32 comment \"nvram: wan_dns\"
add Skynet-Whitelist $(nvram get wan0_dns | awk '{print $1}')/32 comment \"nvram: wan0_dns\"
add Skynet-Whitelist $(nvram get wan0_dns | awk '{print $2}')/32 comment \"nvram: wan0_dns\"
add Skynet-Whitelist $(nvram get wan0_xdns | awk '{print $1}')/32 comment \"nvram: wan0_xdns\"
add Skynet-Whitelist $(nvram get wan0_xdns | awk '{print $2}')/32 comment \"nvram: wan0_xdns\"
add Skynet-Whitelist 192.30.252.0/22 comment \"nvram: Github Content Server\"
add Skynet-Whitelist 192.168.1.0/24 comment \"nvram: LAN Subnet\"
add Skynet-Whitelist 127.0.0.1/32 comment \"nvram: Localhost\"" | ipset restore -! 2>/dev/null
if [ -n "$(find /jffs -name 'shared-*-whitelist')" ]; then
sed '\~add Skynet-Whitelist ~!d;\~Shared-Whitelist~!d;s~ comment.*~~;s~add~del~g' "$skynetipset" | ipset restore -!
grep -hvF "#" /jffs/shared-*-whitelist | Strip_Domain | while IFS= read -r "domain"; do
for ip in $(Domain_Lookup "$domain" 2> /dev/null); do
ipset -q -A Skynet-Whitelist "$ip" comment "Shared-Whitelist: $domain"
done &
done
wait
fi
}
Manage_Device () {
echo "Looking For Available Partitions"
i=1
IFS="
"
for mounted in $(/bin/mount | grep -E "ext2|ext3|ext4|tfat|exfat" | awk '{printf "%s - (%s)\n", $3, $1}'); do
echo "[$i] --> $mounted"
eval mounts$i="$(echo "$mounted" | awk '{print $1}')"
i=$((i + 1))
done
unset IFS
if [ "$i" = "1" ]; then
echo "[*] No Compatible ext* USB Partitions Found - Exiting!"
echo; exit 1
fi
Select_Device (){
echo
echo "Please Enter Partition Number Or e To Exit"
printf "[0-%s]: " "$((i - 1))"
read -r "partitionNumber"
echo
if [ "$partitionNumber" = "e" ] || [ "$partitionNumber" = "exit" ]; then
echo "[*] Exiting!"
echo; exit 0
elif [ -z "$partitionNumber" ] || [ "$partitionNumber" -gt $((i - 1)) ] 2>/dev/null || [ "$partitionNumber" = "0" ]; then
echo "[*] Invalid Partition Number!"
Select_Device
elif [ "$partitionNumber" -eq "$partitionNumber" ] 2>/dev/null;then
true
else
echo "[*] $partitionNumber Isn't An Option!"
Select_Device
fi
}
Select_Device
device=""
eval device=\$mounts"$partitionNumber"
touch "${device}/rwtest"
if [ ! -w "${device}/rwtest" ]; then
echo "[*] Writing To $device Failed - Exiting!"
Manage_Device
else
rm -rf "${device}/rwtest"
fi
}
Create_Swap () {
while true; do
echo "Select SWAP File Size:"
echo "[1] --> 256MB"
echo "[2] --> 512MB"
echo "[3] --> 1GB"
echo "[4] --> 2GB"
echo
echo "[e] --> Exit Menu"
echo
printf "[1-4]: "
read -r "menu"
echo
case "$menu" in
1)
swapsize=262144
break
;;
2)
swapsize=524288
break
;;
3)
swapsize=1048576
break
;;
4)
swapsize=2097152
break
;;
e|exit)
echo "[*] Exiting!"
echo; exit 0
;;
*)
echo "[*] $menu Isn't An Option!"
echo
;;
esac
done
swaplocation="${device}/myswap.swp"
if [ -f "$swaplocation" ]; then swapoff "$swaplocation" 2>/dev/null; rm -rf "$swaplocation"; fi
if [ "$(df $device | xargs | awk '{print $11}')" -le "$swapsize" ]; then echo "[*] Not Enough Free Space Available On $device"; Create_Swap; fi
echo "[i] Creating SWAP File"
dd if=/dev/zero of="$swaplocation" bs=1k count="$swapsize"
mkswap "$swaplocation"
swapon "$swaplocation"
sed -i '\~swapon ~d' /jffs/scripts/post-mount
if [ "$(wc -l < /jffs/scripts/post-mount)" -lt "2" ]; then echo >> /jffs/scripts/post-mount; fi
sed -i "2i swapon $swaplocation # Skynet Firewall Addition" /jffs/scripts/post-mount
if [ -f "/jffs/scripts/unmount" ] && ! grep -qF "&& swapoff" /jffs/scripts/unmount; then
echo "[ \"\$(/usr/bin/find \"\$1/myswap.swp\" 2> /dev/null)\" ] && swapoff \"\$1/myswap.swp\" # Skynet Firewall Addition" >> /jffs/scripts/unmount
fi
echo "[i] SWAP File Located At $swaplocation"
echo
}
Purge_Logs () {
sed '\~BLOCKED -~!d' "$syslog1loc" "$syslogloc" 2>/dev/null >> "$skynetlog"
sed -i '\~BLOCKED -~d' "$syslog1loc" "$syslogloc" 2>/dev/null
if [ "$(du "$skynetlog" | awk '{print $1}')" -ge "10240" ]; then
sed -i '\~BLOCKED -~d' "$skynetlog"
sed -i '\~Skynet: \[#\] ~d' "$skynetevents"
if [ "$(du "$skynetlog" | awk '{print $1}')" -ge "3000" ]; then
true > "$skynetlog"
fi
fi
if [ "$1" = "all" ] || [ "$(grep -cE "Skynet: [#] " "$syslogloc" 2>/dev/null)" -gt "24" ] 2>/dev/null; then
sed '\~Skynet: \[#\] ~!d' "$syslog1loc" "$syslogloc" 2>/dev/null >> "$skynetevents"
sed -i '\~Skynet: \[#\] ~d;\~Skynet: \[i\] ~d;\~Skynet: \[\*\] Lock ~d' "$syslog1loc" "$syslogloc" 2>/dev/null
fi
}
Print_Log () {
oldips="$blacklist1count"
oldranges="$blacklist2count"
blacklist1count="$(grep -Foc "add Skynet-Black" "$skynetipset" 2> /dev/null)"
blacklist2count="$(grep -Foc "add Skynet-Block" "$skynetipset" 2> /dev/null)"
if Check_IPTables; then
if [ "$filtertraffic" != "outbound" ]; then
hits1="$(iptables -xnvL PREROUTING -t raw | grep -Fv "LOG" | grep -F "Skynet-Master src" | awk '{print $1}')"
else
hits1="0"
fi
if [ "$filtertraffic" != "inbound" ]; then
hits2="$(($(iptables -xnvL PREROUTING -t raw | grep -Fv "LOG" | grep -F "Skynet-Master dst" | awk '{print $1}')+$(iptables -xnvL OUTPUT -t raw | grep -Fv "LOG" | grep -F "Skynet-Master dst" | awk '{print $1}')))"
else
hits2="0"
fi
fi
ftime="$(($(date +%s) - stime))"
if ! echo "$((blacklist1count - oldips))" | grep -qF "-"; then newips="+$((blacklist1count - oldips))"; else newips="$((blacklist1count - oldips))"; fi
if ! echo "$((blacklist2count - oldranges))" | grep -qF "-"; then newranges="+$((blacklist2count - oldranges))"; else newranges="$((blacklist2count - oldranges))"; fi
if [ "$1" = "minimal" ]; then
Grn "$blacklist1count IPs (${newips}) -- $blacklist2count Ranges Banned (${newranges}) || $hits1 Inbound -- $hits2 Outbound Connections Blocked!"
else
logz="[#] $blacklist1count IPs (${newips}) -- $blacklist2count Ranges Banned (${newranges}) || $hits1 Inbound -- $hits2 Outbound Connections Blocked! [$1] [${ftime}s]"
logger -t Skynet "$logz"; echo "$logz"
fi
}
Write_Config () {
{ printf "%s\\n" "################################################"
printf "%s\\n" "## Generated By Skynet - Do Not Manually Edit ##"
printf "%-45s %s\\n\\n" "## $(date +"%b %d %T")" "##"
printf "%s\\n" "## Installer ##"
printf "%s=\"%s\"\\n" "model" "$model"
printf "%s=\"%s\"\\n" "localver" "$localver"
printf "%s=\"%s\"\\n" "autoupdate" "$autoupdate"
printf "%s=\"%s\"\\n" "banmalwareupdate" "$banmalwareupdate"