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187 lines
5.2 KiB
187 lines
5.2 KiB
#!/bin/sh
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#######################################################
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# ad/abuse domain blocking script for dnsmasq/openwrt #
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# written by Dirk Brenken (dirk@brenken.org) #
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#######################################################
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# LICENSE
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# ========
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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###############
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# environment #
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###############
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# set script version
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#
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adb_version="0.22.2"
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# get current pid, script directory and openwrt version
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#
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pid=${$}
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adb_scriptdir="${0%/*}"
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openwrt_version="$(cat /etc/openwrt_version 2>/dev/null)"
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# source in adblock function library
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#
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if [ -r "${adb_scriptdir}/adblock-helper.sh" ]
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then
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. "${adb_scriptdir}/adblock-helper.sh"
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else
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rc=500
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/usr/bin/logger -s -t "adblock[${pid}] error" "adblock function library not found, rc: ${rc}"
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exit ${rc}
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fi
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################
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# main program #
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################
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# call restore function on trap signals (HUP, INT, QUIT, BUS, SEGV, TERM)
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#
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trap "f_log 'trap error' '600'; f_restore" 1 2 3 10 11 15
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# start logging
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#
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f_log "domain adblock processing started (${adb_version}, ${openwrt_version}, $(/bin/date "+%d.%m.%Y %H:%M:%S"))"
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# load environment
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#
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f_envload
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# parse environment
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#
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f_envparse
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# check environment
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#
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f_envcheck
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# start shallalist (pre-)processing
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#
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if [ -n "${adb_arc_shalla}" ]
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then
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# download shallalist archive
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#
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f_log "shallalist (pre-)processing started ..."
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shalla_archive="${adb_tmpdir}/shallalist.tar.gz"
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shalla_file="${adb_tmpdir}/shallalist.txt"
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curl ${curl_parm} --max-time "${adb_maxtime}" "${adb_arc_shalla}" --output "${shalla_archive}" 2>/dev/null
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rc=${?}
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if [ $((rc)) -ne 0 ]
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then
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f_log "shallalist archive download failed (${adb_arc_shalla})" "${rc}"
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f_restore
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fi
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# extract and merge only domains of selected shallalist categories
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#
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> "${shalla_file}"
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for category in ${adb_cat_shalla}
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do
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tar -xOzf "${shalla_archive}" BL/${category}/domains 2>/dev/null >> "${shalla_file}"
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rc=${?}
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if [ $((rc)) -ne 0 ]
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then
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f_log "shallalist archive extraction failed (${category})" "${rc}"
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f_restore
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fi
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done
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# finish shallalist (pre-)processing
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#
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rm -f "${shalla_archive}" >/dev/null 2>&1
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rm -rf "${adb_tmpdir}/BL" >/dev/null 2>&1
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adb_sources="${adb_sources} file:///${shalla_file}&ruleset=rset_shalla"
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f_log "shallalist (pre-)processing finished (${adb_cat_shalla# })"
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fi
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# loop through active adblock domain sources,
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# prepare output and store all extracted domains in temp file
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#
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adb_sources="${adb_sources} file://${adb_blacklist}&ruleset=rset_default"
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for src in ${adb_sources}
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do
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# download selected adblock sources
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#
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url="${src//\&ruleset=*/}"
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check_url="$(printf "${url}" | sed -n '/^https:/p')"
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if [ -n "${check_url}" ]
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then
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tmp_var="$(wget ${wget_parm} --timeout="${adb_maxtime}" --tries=1 --output-document=- "${url}" 2>/dev/null)"
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rc=${?}
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else
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tmp_var="$(curl ${curl_parm} --max-time "${adb_maxtime}" "${url}" 2>/dev/null)"
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rc=${?}
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fi
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# check download result and prepare domain output by regex patterns
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#
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if [ $((rc)) -eq 0 ] && [ -n "${tmp_var}" ]
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then
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eval "$(printf "${src}" | sed 's/\(.*\&ruleset=\)/ruleset=\$/g')"
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tmp_var="$(printf "%s\n" "${tmp_var}" | tr '[A-Z]' '[a-z]')"
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count="$(printf "%s\n" "${tmp_var}" | eval "${ruleset}" | tee -a "${adb_tmpfile}" | wc -l)"
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f_log "source download finished (${url}, ${count} entries)"
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if [ "${url}" = "file:///${shalla_file}" ]
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then
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rm -f "${shalla_file}" >/dev/null 2>&1
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fi
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unset tmp_var 2>/dev/null
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elif [ $((rc)) -eq 0 ] && [ -z "${tmp_var}" ]
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then
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f_log "empty source download finished (${url})"
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else
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f_log "source download failed (${url})" "${rc}"
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f_restore
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fi
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done
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# remove whitelist domains, sort domains and make them unique
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# and finally rewrite ad/abuse domain information to dnsmasq file
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#
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if [ -s "${adb_whitelist}" ]
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then
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grep -Fvxf "${adb_whitelist}" "${adb_tmpfile}" 2>/dev/null | sort -u 2>/dev/null | eval "${adb_dnsformat}" 2>/dev/null > "${adb_dnsfile}"
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rc=${?}
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else
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sort -u "${adb_tmpfile}" 2>/dev/null | eval "${adb_dnsformat}" 2>/dev/null > "${adb_dnsfile}"
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rc=${?}
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fi
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if [ $((rc)) -eq 0 ]
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then
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rm -f "${adb_tmpfile}" >/dev/null 2>&1
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f_log "domain merging finished"
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else
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f_log "domain merging failed" "${rc}"
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f_restore
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fi
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# write dns file footer
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#
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f_footer
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# restart dnsmasq with newly generated block list
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#
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/etc/init.d/dnsmasq restart >/dev/null 2>&1
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sleep 2
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# dnsmasq health check
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#
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f_dnscheck
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# remove files and exit
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#
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f_remove
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