csf_drop_country_from_deny_list.sh

#!/bin/bash
set -euo pipefail

# Usage: bash csf_drop_country_from_deny_list.sh "<country-pattern>"
# Examples: "RS/Serbia"  "RS"  "Serbia"

if [ $# -lt 1 ]; then
  echo "Usage: $0 <country-pattern>"
  exit 1
fi

COUNTRY="$1"
LOOP_WAIT=1
DENYFILE="/etc/csf/csf.deny"

if [ ! -r "$DENYFILE" ]; then
  echo "Ne mogu da ocitam $DENYFILE"
  exit 2
fi

grep -i -- "$COUNTRY" "$DENYFILE" \
  | awk '{print $1}' \
  | egrep -o '^([0-9]{1,3}\.){3}[0-9]{1,3}$' \
  | while read -r ip; do
      echo "Remove: $ip"
      csf -dr "$ip" || echo "Upozorenje: csf -dr vrati pogresku za $ip"
      sleep "$LOOP_WAIT"
    done