#!/bin/bash
# info: delete firewall blocking rule
# options: IP CHAIN
#
# The function deletes blocking rule from system firewall


#----------------------------------------------------------#
#                    Variable&Function                     #
#----------------------------------------------------------#

# Importing system variables
source /etc/profile

# Argument definition
ip=$1
chain=$(echo $2|tr '[:lower:]' '[:upper:]')

# Defining absolute path for iptables and modprobe
iptables="/sbin/iptables"

# Includes
source $HESTIA/func/main.sh
source $HESTIA/conf/hestia.conf


#----------------------------------------------------------#
#                    Verifications                         #
#----------------------------------------------------------#

check_args '2' "$#" 'IP CHAIN'
is_format_valid 'ip' 'chain'
is_system_enabled "$FIREWALL_SYSTEM" 'FIREWALL_SYSTEM'

# Perform verification if read-only mode is enabled
check_hestia_demo_mode


#----------------------------------------------------------#
#                       Action                             #
#----------------------------------------------------------#

# Checking ip in banlist
conf="$HESTIA/data/firewall/banlist.conf"
check_ip=$(grep "IP='$ip' CHAIN='$chain'" $conf 2>/dev/null)
if [ -z "$check_ip" ]; then
    exit
fi

# Deleting ip from banlist
sip=$(echo "$ip"| sed "s|/|\\\/|g")
sed -i "/IP='$sip' CHAIN='$chain'/d" $conf
b=$($iptables -L fail2ban-$chain --line-number -n|grep -w $ip|awk '{print $1}')
$iptables -D fail2ban-$chain $b 2>/dev/null

# Changing permissions
chmod 660 $conf


#----------------------------------------------------------#
#                       Hestia                             #
#----------------------------------------------------------#

# Logging
log_event "$OK" "$ARGUMENTS"

exit
