v-change-firewall-rule

#!/bin/bash
# info: change firewall rule
# options: RULE ACTION IP PORT [PROTOCOL] [COMMENT]
#
# The function is used for changing existing firewall rule.
# It fully replace rule with new one but keeps same id.


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

# Importing system variables
source /etc/profile

# Argument defenition
rule=$1
action=$(echo $2|tr '[:lower:]' '[:upper:]')
ip=$3
port_ext=$4
protocol=${5-TCP}
protocol=$(echo $protocol|tr '[:lower:]' '[:upper:]')
comment=$6

# Includes
source $VESTA/func/main.sh
source $VESTA/conf/vesta.conf

# Sort function
sort_fw_rules() {
    cat $VESTA/data/firewall/rules.conf |\
        sort -n -k 2 -t \' > $VESTA/data/firewall/rules.conf.tmp
    mv -f $VESTA/data/firewall/rules.conf.tmp \
        $VESTA/data/firewall/rules.conf
}


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

check_args '5' "$#" 'RULE ACTION IP  PORT [PROTOCOL] [COMMENT]'
validate_format 'rule' 'action' 'protocol' 'port_ext' 'ip'
if [ ! -z "$comment" ]; then
    validate_format 'comment'
fi
is_system_enabled "$FIREWALL_SYSTEM" 'FIREWALL_SYSTEM'
is_object_valid '../../data/firewall/rules' 'RULE' "$rule"


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

# Concatenating firewall rule
str="RULE='$rule' ACTION='$action' PROTOCOL='$protocol' PORT='$port_ext'"
str="$str IP='$ip' COMMENT='$comment' SUSPENDED='no'"
str="$str TIME='$TIME' DATE='$DATE'"

# Deleting old rule
sed -i "/RULE='$rule' /d" $VESTA/data/firewall/rules.conf

# Adding new
echo "$str" >> $VESTA/data/firewall/rules.conf

# Sorting firewall rules by id number
sort_fw_rules

# Updating system firewall
$BIN/v-update-firewall


#----------------------------------------------------------#
#                       Vesta                              #
#----------------------------------------------------------#

# Logging
log_event "$OK" "$EVENT"

exit