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adblock-generator.sh
#!bin/bash
SUBSCRIPTION_LIST=(
https://easylist-downloads.adblockplus.org/easyprivacy.txt
https://easylist-downloads.adblockplus.org/easylistchina.txt
https://easylist-downloads.adblockplus.org/easylist.txt
https://easylist-downloads.adblockplus.org/malwaredomains_full.txt
https://easylist-downloads.adblockplus.org/exceptionrules.txt
)
IP=$(ifconfig eth0 | awk '/inet addr/{print substr($2,6)}')
SAVE_PATH='/etc/pihole'
ADBLOCK_RULES='adblock-rules.txt'
ADBLOCK_EXCEPT_RULES='adblock-except-rules.txt'
ADBLOCK_HOST='adblock-host.list'
generate_adblock_rules() {
TMP_DIR='/tmp/adblock-rules'
TMP_CACHE='.cache'
LIST=$1
RULE_FILE=$2
EXCEPT_RULE_FILE=$3
if [[ -z "${LIST[@]}" || -z "${RULE_FILE}" || -z "${EXCEPT_RULE_FILE}" ]]; then
echo "At least one input is empty!"
exit 1
fi
rm -rf ${TMP_DIR} && mkdir -p ${TMP_DIR}
# regular rules
for URL in "${LIST[@]}"; do
curl -s "${URL}" > "${TMP_DIR}/${TMP_CACHE}"
# regular rules
egrep '^\|\|[A-Za-z0-9\.-]+\^$' "${TMP_DIR}/${TMP_CACHE}" | awk '{print substr($0, 3, length($0)-3)}' >> "${TMP_DIR}/adblock.rules"
# exception rules
egrep '^@@\|\|[A-Za-z0-9\.-]+\^$' "${TMP_DIR}/${TMP_CACHE}" | awk '{print substr($0, 5, length($0)-5)}' >> "${TMP_DIR}/adblock.exception-rules"
done
# merge hosts
awk '!a[$0]++' "${TMP_DIR}/adblock.rules" > "${RULE_FILE}"
awk '!a[$0]++' "${TMP_DIR}/adblock.exception-rules" > "${EXCEPT_RULE_FILE}"
rm -rf ${TMP_DIR}
}
generate_host() {
awk "{print \"${IP}\", \$0}" $1 > $2
}
generate_adblock_rules ${SUBSCRIPTION_LIST} "${SAVE_PATH}/${ADBLOCK_RULES}" "${SAVE_PATH}/${ADBLOCK_EXCEPT_RULES}"
generate_host "${SAVE_PATH}/${ADBLOCK_RULES}" "${SAVE_PATH}/${ADBLOCK_HOST}"
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