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AS_Network_List/blacklists_updater_iptables.sh
2025-10-23 12:17:01 +02:00

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#!/bin/sh
# Input files (generated by blacklists_updater_txt.sh)
blacklist_file="blacklists/blacklist.txt"
blacklist_v4_file="blacklists/blacklist-v4.txt"
blacklist_v6_file="blacklists/blacklist-v6.txt"
# Output directory and files
iptables_output_dir="blacklists_iptables"
iptables_output_file="${iptables_output_dir}/blacklist.ipset"
iptables_v4_output_file="${iptables_output_dir}/blacklist-v4.ipset"
iptables_v6_output_file="${iptables_output_dir}/blacklist-v6.ipset"
# Create iptables directory if it doesn't exist
mkdir -p "${iptables_output_dir}"
# Function to generate ipset config from input file
generate_ipset_config() {
local input_file="$1"
local output_file="$2"
local ip_version="$3"
local set_name="$4"
local family="$5"
# Count entries for hash size calculation
local count=$(wc -l < "${input_file}" | tr -d ' ')
local hashsize=$((count > 1024 ? count : 1024))
local maxelem=$((count * 2))
# Generate ipset configuration with header
cat > "${output_file}" << EOF
# IPSet blacklist configuration ${ip_version}
# Auto-generated from $(basename ${input_file})
# Last updated: $(date -u +"%Y-%m-%d %H:%M:%S UTC")
#
# Usage:
# 1. Load the ipset:
# ipset restore < $(basename ${output_file})
#
# 2. Use with iptables/ip6tables:
# iptables -I INPUT -m set --match-set ${set_name} src -j DROP
# iptables -I FORWARD -m set --match-set ${set_name} src -j DROP
#
# 3. To flush/delete the set:
# ipset flush ${set_name}
# ipset destroy ${set_name}
#
create ${set_name} hash:net family ${family} hashsize ${hashsize} maxelem ${maxelem}
EOF
# Add entries for each network/IP
while IFS= read -r network; do
# Skip empty lines
[ -z "${network}" ] && continue
echo "add ${set_name} ${network}" >> "${output_file}"
done < "${input_file}"
echo "✓ Generated ${ip_version}: ${output_file}"
echo " Total entries: ${count}"
}
# Generate ipset configurations from blacklist files
generate_ipset_config "${blacklist_v4_file}" "${iptables_v4_output_file}" "(IPv4 only)" "blacklist-v4" "inet"
generate_ipset_config "${blacklist_v6_file}" "${iptables_v6_output_file}" "(IPv6 only)" "blacklist-v6" "inet6"
# For mixed file, we need to create two sets (IPv4 and IPv6) as ipset doesn't support mixed families
cat > "${iptables_output_file}" << EOF
# IPSet blacklist configuration (mixed IPv4/IPv6)
# Auto-generated from $(basename ${blacklist_file})
# Last updated: $(date -u +"%Y-%m-%d %H:%M:%S UTC")
#
# Usage:
# 1. Load the ipset:
# ipset restore < $(basename ${iptables_output_file})
#
# 2. Use with iptables/ip6tables:
# iptables -I INPUT -m set --match-set blacklist-v4 src -j DROP
# iptables -I FORWARD -m set --match-set blacklist-v4 src -j DROP
# ip6tables -I INPUT -m set --match-set blacklist-v6 src -j DROP
# ip6tables -I FORWARD -m set --match-set blacklist-v6 src -j DROP
#
# 3. To flush/delete the sets:
# ipset flush blacklist-v4 && ipset destroy blacklist-v4
# ipset flush blacklist-v6 && ipset destroy blacklist-v6
#
EOF
# Append both IPv4 and IPv6 sets to the mixed file
tail -n +2 "${iptables_v4_output_file}" | grep -E "^(create|add)" >> "${iptables_output_file}"
echo "" >> "${iptables_output_file}"
tail -n +2 "${iptables_v6_output_file}" | grep -E "^(create|add)" >> "${iptables_output_file}"
echo "✓ Generated (mixed IPv4/IPv6): ${iptables_output_file}"
echo " Total entries: $(wc -l < "${blacklist_file}" | tr -d ' ')"