unboundのdnsブロッキングリストを更新する。for OpenBSD

update-unbound-blocklist.sh

#!/usr/bin/env zsh

## @since 2020-05-15 
## @last 2021-01-05 
## @author takuya
## unbound にブロッキング
## ブロッキングするURLを定期的に更新する

function update_domain_lists(){
  update280blocker
#  updateYoutubeAdblocker (https://github.com/anudeepND/youtubeadsblacklist is dead)
}
function geneate_conf(){

  URL=$1
  OUTPUT=$2
  curl -sL $URL \
    | sed -e "s/\r//"   \
    | grep -E '^[a-z0-9]' \
    | awk '{print "local-zone: \""$1".\" static"}' \
    | sort \
    | uniq \
    > $OUTPUT
}

function checkHTTPStatusIs200(){
  URL=$1
  RET=$(curl -IL -s -o /dev/null -w '%{http_code}' $URL)

  [[ $RET == 200 ]];

}
function update280blocker () {

  URL=https://280blocker.net/files/280blocker_domain_$(date +%Y%m).txt
  ## mirror
  ## URL=https://raw.githubusercontent.com/junkurihara/280blocker_domain-mirror/master/280blocker_domain.txt
  OUTPUT=/var/unbound/etc/280blocker-list.conf
  if ! checkHTTPStatusIs200 $URL ; then
    echo failed;
    return 1
  fi
  ##
  geneate_conf $URL $OUTPUT
}

function updateYoutubeAdblocker () {

  URL=https://raw.githubusercontent.com/anudeepND/youtubeadsblacklist/master/domainlist.txt
  OUTPUT=/var/unbound/etc/youtube-ad.conf
  ##
  if ! checkHTTPStatusIs200 $URL ; then
    echo failed;
    return 1
  fi
  ##
  geneate_conf $URL $OUTPUT
}

function restart_unbund(){
  /usr/sbin/rcctl ls on | /usr/bin/grep -q unbound &&
  /usr/sbin/rcctl restart unbound
}
function restart_dnsmasq(){
  /usr/sbin/rcctl ls on | /usr/bin/grep -q dnsmasq && 
  /usr/sbin/rcctl restart dnsmasq
}
function main(){
  update_domain_lists &&
  restart_unbund &&
  restart_dnsmasq
}



main