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64 lines
3.1 KiB
64 lines
3.1 KiB
#!/bin/sh
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# helper script to resolve domains for adding to banIP-related IPSets
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# Copyright (c) 2020-2021 Dirk Brenken (dev@brenken.org)
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# This is free software, licensed under the GNU General Public License v3.
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# (s)hellcheck exceptions
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# shellcheck disable=1091,3040
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export LC_ALL=C
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export PATH="/usr/sbin:/usr/bin:/sbin:/bin"
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set -o pipefail
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. "/lib/functions.sh"
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ban_src_name="${1}"
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ban_src_file="${2}"
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ban_tmpbase="$(uci_get banip global ban_tmpbase "/tmp")"
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ban_backupdir="$(uci_get banip global ban_backupdir "${ban_tmpbase}/banIP-Backup")"
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ban_proto4_enabled="$(uci_get banip global ban_proto4_enabled "0")"
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ban_proto6_enabled="$(uci_get banip global ban_proto6_enabled "0")"
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ban_ipset_cmd="$(command -v ipset)"
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ban_lookup_cmd="$(command -v nslookup)"
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ban_logger_cmd="$(command -v logger)"
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ban_cnt_err="0"
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ban_message=""
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rm -f "${ban_backupdir}/banIP.${ban_src_name}_addon_4" "${ban_backupdir}/banIP.${ban_src_name}_addon_6"
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while read -r domain; do
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result="$(
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"${ban_lookup_cmd}" "${domain}" 2>/dev/null
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printf "%s" "${?}"
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)"
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if [ "$(printf "%s" "${result}" | tail -1)" = "0" ]; then
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ips="$(printf "%s" "${result}" | awk '/^Address[ 0-9]*: /{ORS=" ";print $NF}')"
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for ip in ${ips}; do
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for proto in "4" "6"; do
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if { [ "${proto}" = "4" ] && [ "${ban_proto4_enabled}" = "1" ] && [ -n "$("${ban_ipset_cmd}" -q -n list "${ban_src_name}_${proto}")" ] &&
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[ -n "$(printf "%s" "${ip}" | awk '/^(([0-9]{1,3}\.){3}[0-9]{1,3}(\/[0-9]{1,2})?)([[:space:]]|$)/{print $1}')" ]; } ||
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{ [ "${proto}" = "6" ] && [ "${ban_proto6_enabled}" = "1" ] && [ -n "$("${ban_ipset_cmd}" -q -n list "${ban_src_name}_${proto}")" ] &&
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[ -n "$(printf "%s" "${ip}" | awk '/^(([0-9A-f]{0,4}:){1,7}[0-9A-f]{0,4}:?(\/(1?[0-2][0-8]|[0-9][0-9]))?)([[:space:]]|$)/{print $1}')" ]; }; then
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printf "%s\n" "add ${ban_src_name}_${proto} ${ip}" >>"${ban_backupdir}/banIP.${ban_src_name}_addon_${proto}"
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fi
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done
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done
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[ -n "${ips}" ] && "${ban_logger_cmd}" -p "debug" -t "banIP-resolve [${$}]" "added IPs of '${domain}' to ${ban_src_name} (${ips})" 2>/dev/null
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else
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ban_cnt_err=$((ban_cnt_err + 1))
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fi
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done <"${ban_src_file}"
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for proto in "4" "6"; do
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if { { [ "${proto}" = "4" ] && [ "${ban_proto4_enabled}" = "1" ]; } || { [ "${proto}" = "6" ] && [ "${ban_proto6_enabled}" = "1" ]; }; } &&
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[ ! -s "${ban_backupdir}/banIP.${ban_src_name}_addon_${proto}" ] && [ -s "${ban_backupdir}/banIP.${ban_src_name}_addon_${proto}.gz" ]; then
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gzip -df "${ban_backupdir}/banIP.${ban_src_name}_addon_${proto}.gz" 2>/dev/null
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"${ban_ipset_cmd}" -q -! restore <"${ban_backupdir}/banIP.${ban_src_name}_addon_${proto}"
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ban_message="backup used"
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elif [ -n "$("${ban_ipset_cmd}" -q -n list "${ban_src_name}_${proto}")" ] && [ -s "${ban_backupdir}/banIP.${ban_src_name}_addon_${proto}" ]; then
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"${ban_ipset_cmd}" -q -! restore <"${ban_backupdir}/banIP.${ban_src_name}_addon_${proto}"
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ban_message="${ban_cnt_err} lookup errors"
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fi
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gzip -f "${ban_backupdir}/banIP.${ban_src_name}_addon_${proto}" 2>/dev/null
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done
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"${ban_logger_cmd}" -p "info" -t "banIP-resolve [${$}]" "${ban_src_name} domain import has been finished (${ban_message:-"-"})" 2>/dev/null
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rm -f "${ban_src_file}"
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