get-ru-ips.sh

#!/bin/bash

function ProgressBar {
  let _progress=(${1}*100/${2}*100)/100
  let _done=(${_progress}*4)/10
  let _left=40-$_done
  _fill=$(printf "%${_done}s")
  _empty=$(printf "%${_left}s")
  printf "\rAdd routes to route table (${1}/${2}): [${_fill// /#}${_empty// /-}] ${_progress}%% "
}

# Variables
file_raw="russian_subnets_list_raw.txt"
file_user="subnets_user_list.txt"
file_for_calc="russian_subnets_list_raw_for_calc.txt"
file_processed="russian_subnets_list_processed.txt"
gateway_for_internal_ip=`ip route | awk '/default/ {print $3; exit}'`
interface=`ip link show | awk -F ': ' '/state UP/ {print $2}'`

# Get addresses RU segment
echo "Download RU subnets... "
curl --progress-bar "https://stat.ripe.net/data/country-resource-list/data.json?resource=ru" | jq -r ".data.resources.ipv4[]" > $file_raw

echo "Deaggregate subnets... "
cat $file_raw |grep "-" > $file_for_calc
cat $file_raw |grep -v "-" > $file_processed
for line in $(cat $file_for_calc); do ipcalc $line |grep -v "deaggregate" >> $file_processed; done

if [ -e $file_user  ]; then echo "Add user subnets... "; cat $file_user |grep -v "#" >> $file_processed; fi

# Flush route table
echo "Flush route table (down interface $interface)... "
ifdown $interface > /dev/null 2>&1
echo "Up interface $interface..."
ifup $interface > /dev/null 2>&1

# Add route
routes_count_in_file=`wc -l $file_processed`
routes_count_current=0
for line in $(cat $file_processed); do ip route add $line via $gateway_for_internal_ip dev $interface; let "routes_count_current+=1" ; ProgressBar ${routes_count_current} ${routes_count_in_file}; done
echo ""

echo "Remove temp files... "
rm $file_raw $file_processed $file_json $file_for_calc

routes_count=`ip r | wc -l`
echo "Routes in routing table: $routes_count"