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957 lines
29 KiB
957 lines
29 KiB
#!/bin/sh
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# dns based ad/abuse domain blocking
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# written by 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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# 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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# set initial defaults
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#
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LC_ALL=C
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PATH="/usr/sbin:/usr/bin:/sbin:/bin"
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adb_ver="3.4.3"
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adb_sysver="unknown"
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adb_enabled=0
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adb_debug=0
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adb_backup_mode=0
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adb_whitelist_mode=0
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adb_forcesrt=0
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adb_forcedns=0
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adb_notify=0
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adb_notifycnt=0
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adb_triggerdelay=0
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adb_backup=0
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adb_backupdir="/mnt"
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adb_fetchutil="uclient-fetch"
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adb_dns="dnsmasq"
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adb_dnsprefix="adb_list"
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adb_dnsfile="${adb_dnsprefix}.overall"
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adb_dnsflush=0
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adb_whitelist="/etc/adblock/adblock.whitelist"
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adb_rtfile="/tmp/adb_runtime.json"
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adb_hashutil="$(command -v sha256sum)"
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adb_hashold=""
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adb_hashnew=""
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adb_cnt=0
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adb_rc=0
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adb_action="${1:-"start"}"
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adb_pidfile="/var/run/adblock.pid"
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# load adblock environment
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#
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f_envload()
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{
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local dns_up sys_call sys_desc sys_model sys_ver cnt=0
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# get system information
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#
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sys_call="$(ubus -S call system board 2>/dev/null)"
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if [ -n "${sys_call}" ]
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then
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sys_desc="$(printf '%s' "${sys_call}" | jsonfilter -e '@.release.description')"
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sys_model="$(printf '%s' "${sys_call}" | jsonfilter -e '@.model')"
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sys_ver="$(cat /etc/turris-version 2>/dev/null)"
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if [ -n "${sys_ver}" ]
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then
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sys_desc="${sys_desc}/${sys_ver}"
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fi
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adb_sysver="${sys_model}, ${sys_desc}"
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fi
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# check hash utility
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#
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if [ ! -x "${adb_hashutil}" ]
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then
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adb_hashutil="$(command -v md5sum)"
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fi
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# source in system libraries
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#
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if [ -r "/lib/functions.sh" ] && [ -r "/usr/share/libubox/jshn.sh" ]
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then
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. "/lib/functions.sh"
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. "/usr/share/libubox/jshn.sh"
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else
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f_log "err" "system libraries not found"
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fi
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# parse 'global' and 'extra' section by callback
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#
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config_cb()
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{
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local type="${1}"
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if [ "${type}" = "adblock" ]
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then
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option_cb()
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{
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local option="${1}"
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local value="${2}"
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eval "${option}=\"${value}\""
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}
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else
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reset_cb
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fi
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}
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# parse 'source' typed sections
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#
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parse_config()
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{
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local value opt section="${1}" options="enabled adb_src adb_src_rset adb_src_cat"
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eval "adb_sources=\"${adb_sources} ${section}\""
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for opt in ${options}
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do
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config_get value "${section}" "${opt}"
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if [ -n "${value}" ]
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then
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eval "${opt}_${section}=\"${value}\""
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fi
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done
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}
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# load adblock config
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#
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config_load adblock
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config_foreach parse_config source
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# check dns backend
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#
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case "${adb_dns}" in
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dnsmasq)
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adb_dnsinstance="${adb_dnsinstance:-"0"}"
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adb_dnsuser="${adb_dnsuser:-"dnsmasq"}"
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adb_dnsdir="${adb_dnsdir:-"/tmp"}"
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adb_dnsheader=""
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adb_dnsformat="awk '{print \"server=/\"\$0\"/\"}'"
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if [ ${adb_whitelist_mode} -eq 1 ]
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then
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adb_dnsformat="awk '{print \"server=/\"\$0\"/#\"}'"
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adb_dnsblock="server=/#/"
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fi
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;;
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unbound)
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adb_dnsinstance="${adb_dnsinstance:-"0"}"
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adb_dnsuser="${adb_dnsuser:-"unbound"}"
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adb_dnsdir="${adb_dnsdir:-"/var/lib/unbound"}"
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adb_dnsheader=""
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adb_dnsformat="awk '{print \"local-zone: \042\"\$0\"\042 static\"}'"
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if [ ${adb_whitelist_mode} -eq 1 ]
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then
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adb_dnsformat="awk '{print \"local-zone: \042\"\$0\"\042 transparent\"}'"
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adb_dnsblock="local-zone: \".\" static"
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fi
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;;
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named)
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adb_dnsinstance="${adb_dnsinstance:-"0"}"
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adb_dnsuser="${adb_dnsuser:-"bind"}"
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adb_dnsdir="${adb_dnsdir:-"/var/lib/bind"}"
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adb_dnsheader="\$TTL 2h"$'\n'"@ IN SOA localhost. root.localhost. (1 6h 1h 1w 2h)"$'\n'" IN NS localhost."
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adb_dnsformat="awk '{print \"\"\$0\" CNAME .\n*.\"\$0\" CNAME .\"}'"
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if [ ${adb_whitelist_mode} -eq 1 ]
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then
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adb_dnsformat="awk '{print \"\"\$0\" CNAME rpz-passthru.\n*.\"\$0\" CNAME rpz-passthru.\"}'"
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adb_dnsblock="* CNAME ."
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fi
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;;
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kresd)
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adb_dnsinstance="${adb_dnsinstance:-"0"}"
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adb_dnsuser="${adb_dnsuser:-"root"}"
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adb_dnsdir="${adb_dnsdir:-"/etc/kresd"}"
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adb_dnsheader="\$TTL 2h"$'\n'"@ IN SOA localhost. root.localhost. (1 6h 1h 1w 2h)"$'\n'" IN NS localhost."
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adb_dnsformat="awk '{print \"\"\$0\" CNAME .\n*.\"\$0\" CNAME .\"}'"
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if [ ${adb_whitelist_mode} -eq 1 ]
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then
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adb_dnsformat="awk '{print \"\"\$0\" CNAME rpz-passthru.\n*.\"\$0\" CNAME rpz-passthru.\"}'"
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adb_dnsblock="* CNAME ."
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fi
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;;
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dnscrypt-proxy)
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adb_dnsinstance="${adb_dnsinstance:-"0"}"
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adb_dnsuser="${adb_dnsuser:-"nobody"}"
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adb_dnsdir="${adb_dnsdir:-"/tmp"}"
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adb_dnsheader=""
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adb_dnsformat="awk '{print \$0}'"
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;;
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esac
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# check adblock status
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#
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if [ ${adb_enabled} -eq 0 ]
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then
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f_extconf
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f_temp
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f_rmdns
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f_jsnup
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f_log "info" "adblock is currently disabled, please set adb_enabled to '1' to use this service"
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exit 0
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fi
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if [ "${adb_dns}" = "dnsmasq" ] && [ ${adb_dnsinstance} -ne 0 ]
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then
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adb_dnsfile="${adb_dnsprefix}.overall.${adb_dnsinstance}"
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fi
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if [ -d "${adb_dnsdir}" ] && [ ! -f "${adb_dnsdir}/${adb_dnsfile}" ]
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then
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printf '%s\n' "${adb_dnsheader}" > "${adb_dnsdir}/${adb_dnsfile}"
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fi
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if [ "${adb_action}" = "start" ] && [ "${adb_trigger}" = "timed" ]
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then
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sleep ${adb_triggerdelay}
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fi
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while [ ${cnt} -le 30 ]
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do
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dns_up="$(ubus -S call service list "{\"name\":\"${adb_dns}\"}" 2>/dev/null | jsonfilter -l1 -e "@[\"${adb_dns}\"].instances.*.running" 2>/dev/null)"
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if [ "${dns_up}" = "true" ]
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then
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break
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fi
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sleep 1
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cnt=$((cnt+1))
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done
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if [ -z "${adb_dns}" ] || [ -z "${adb_dnsformat}" ] || [ ! -x "$(command -v ${adb_dns})" ] || [ ! -d "${adb_dnsdir}" ]
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then
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f_log "err" "'${adb_dns}' not running, DNS backend not found"
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fi
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}
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# check environment
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#
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f_envcheck()
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{
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local ssl_lib
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# check external uci config files
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#
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f_extconf
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# check fetch utility
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#
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case "${adb_fetchutil}" in
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uclient-fetch)
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if [ -f "/lib/libustream-ssl.so" ]
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then
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adb_fetchparm="${adb_fetchparm:-"--timeout=10 --no-check-certificate -O"}"
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ssl_lib="libustream-ssl"
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else
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adb_fetchparm="${adb_fetchparm:-"--timeout=10 -O"}"
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fi
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;;
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wget)
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adb_fetchparm="${adb_fetchparm:-"--no-cache --no-cookies --max-redirect=0 --timeout=10 --no-check-certificate -O"}"
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ssl_lib="built-in"
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;;
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wget-nossl)
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adb_fetchparm="${adb_fetchparm:-"--no-cache --no-cookies --max-redirect=0 --timeout=10 -O"}"
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;;
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busybox)
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adb_fetchparm="${adb_fetchparm:-"-O"}"
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;;
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curl)
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adb_fetchparm="${adb_fetchparm:-"--connect-timeout 10 --insecure -o"}"
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ssl_lib="built-in"
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;;
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aria2c)
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adb_fetchparm="${adb_fetchparm:-"--timeout=10 --allow-overwrite=true --auto-file-renaming=false --check-certificate=false -o"}"
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ssl_lib="built-in"
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;;
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esac
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adb_fetchutil="$(command -v "${adb_fetchutil}")"
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if [ ! -x "${adb_fetchutil}" ] || [ -z "${adb_fetchutil}" ] || [ -z "${adb_fetchparm}" ]
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then
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f_log "err" "download utility not found, please install 'uclient-fetch' with 'libustream-mbedtls' or the full 'wget' package"
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fi
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adb_fetchinfo="${adb_fetchutil} (${ssl_lib:-"-"})"
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f_temp
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f_jsnup "running"
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f_log "info" "start adblock processing (${adb_action})"
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}
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# create temporay files and directories
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#
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f_temp()
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{
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if [ -z "${adb_tmpdir}" ]
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then
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adb_tmpdir="$(mktemp -p /tmp -d)"
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adb_tmpload="$(mktemp -tu)"
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adb_tmpfile="$(mktemp -tu)"
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fi
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if [ ! -s "${adb_pidfile}" ]
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then
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printf '%s' "${$}" > "${adb_pidfile}"
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fi
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}
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# remove temporay files and directories
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#
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f_rmtemp()
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{
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if [ -d "${adb_tmpdir}" ]
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then
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rm -rf "${adb_tmpdir}"
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rm -f "${adb_tmpload}"
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rm -f "${adb_tmpfile}"
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fi
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> "${adb_pidfile}"
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}
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# remove dns related files and directories
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#
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f_rmdns()
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{
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if [ -n "${adb_dns}" ]
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then
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f_hash
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printf '%s\n' "${adb_dnsheader}" > "${adb_dnsdir}/${adb_dnsfile}"
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> "${adb_dnsdir}/.${adb_dnsfile}"
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> "${adb_rtfile}"
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rm -f "${adb_backupdir}/${adb_dnsprefix}"*.gz
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f_hash
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if [ ${?} -eq 1 ]
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then
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f_dnsup
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fi
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f_rmtemp
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fi
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f_log "debug" "f_rmdns::: dns: ${adb_dns}, dns_dir: ${adb_dnsdir}, dns_prefix: ${adb_dnsprefix}, dns_file: ${adb_dnsfile}, rt_file: ${adb_rtfile}, backup_dir: ${adb_backupdir}"
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}
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# commit uci changes
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#
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f_uci()
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{
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local change config="${1}"
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if [ -n "${config}" ]
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then
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change="$(uci -q changes "${config}" | awk '{ORS=" "; print $0}')"
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if [ -n "${change}" ]
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then
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uci -q commit "${config}"
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case "${config}" in
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firewall)
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/etc/init.d/firewall reload >/dev/null 2>&1
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;;
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*)
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/etc/init.d/"${adb_dns}" reload >/dev/null 2>&1
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;;
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esac
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fi
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fi
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f_log "debug" "f_uci ::: config: ${config}, change: ${change}"
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}
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# list/overall count
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#
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f_count()
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{
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local mode="${1}"
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adb_cnt=0
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if [ -s "${adb_dnsdir}/${adb_dnsfile}" ] && ([ -z "${mode}" ] || [ "${mode}" = "final" ])
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then
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if [ "${adb_dns}" = "named" ] || [ "${adb_dns}" = "kresd" ]
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then
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adb_cnt="$(( ($(wc -l 2>/dev/null < "${adb_dnsdir}/${adb_dnsfile}") - $(printf "%s" "${adb_dnsheader}" | grep -c "^")) / 2 ))"
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else
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adb_cnt="$(wc -l 2>/dev/null < "${adb_dnsdir}/${adb_dnsfile}")"
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fi
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elif [ -s "${adb_tmpfile}" ]
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then
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adb_cnt="$(wc -l 2>/dev/null < "${adb_tmpfile}")"
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fi
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}
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# set external config options
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#
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f_extconf()
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{
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local uci_config
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case "${adb_dns}" in
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dnsmasq)
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uci_config="dhcp"
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if [ ${adb_enabled} -eq 1 ] && [ -z "$(uci -q get dhcp.@dnsmasq[${adb_dnsinstance}].serversfile | grep -Fo "${adb_dnsdir}/${adb_dnsfile}")" ]
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then
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uci -q set dhcp.@dnsmasq[${adb_dnsinstance}].serversfile="${adb_dnsdir}/${adb_dnsfile}"
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elif [ ${adb_enabled} -eq 0 ] && [ -n "$(uci -q get dhcp.@dnsmasq[${adb_dnsinstance}].serversfile | grep -Fo "${adb_dnsdir}/${adb_dnsfile}")" ]
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then
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uci -q delete dhcp.@dnsmasq[${adb_dnsinstance}].serversfile
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fi
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;;
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kresd)
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uci_config="resolver"
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if [ ${adb_enabled} -eq 1 ] && [ -z "$(uci -q get resolver.kresd.rpz_file | grep -Fo "${adb_dnsdir}/${adb_dnsfile}")" ]
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then
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uci -q add_list resolver.kresd.rpz_file="${adb_dnsdir}/${adb_dnsfile}"
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elif [ ${adb_enabled} -eq 0 ] && [ -n "$(uci -q get resolver.kresd.rpz_file | grep -Fo "${adb_dnsdir}/${adb_dnsfile}")" ]
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then
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uci -q del_list resolver.kresd.rpz_file="${adb_dnsdir}/${adb_dnsfile}"
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fi
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if [ ${adb_enabled} -eq 1 ] && [ ${adb_dnsflush} -eq 0 ] && [ "$(uci -q get resolver.kresd.keep_cache)" != "1" ]
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then
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uci -q set resolver.kresd.keep_cache="1"
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elif [ ${adb_enabled} -eq 0 ] || ([ ${adb_dnsflush} -eq 1 ] && [ "$(uci -q get resolver.kresd.keep_cache)" = "1" ])
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then
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uci -q delete resolver.kresd.keep_cache
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fi
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;;
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esac
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f_uci "${uci_config}"
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uci_config="firewall"
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if [ ${adb_enabled} -eq 1 ] && [ ${adb_forcedns} -eq 1 ] && \
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[ -z "$(uci -q get firewall.adblock_dns)" ] && [ $(/etc/init.d/firewall enabled; printf "%u" ${?}) -eq 0 ]
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then
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uci -q set firewall.adblock_dns="redirect"
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uci -q set firewall.adblock_dns.name="Adblock DNS"
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uci -q set firewall.adblock_dns.src="lan"
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uci -q set firewall.adblock_dns.proto="tcp udp"
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uci -q set firewall.adblock_dns.src_dport="53"
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uci -q set firewall.adblock_dns.dest_port="53"
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uci -q set firewall.adblock_dns.target="DNAT"
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elif [ -n "$(uci -q get firewall.adblock_dns)" ] && ([ ${adb_enabled} -eq 0 ] || [ ${adb_forcedns} -eq 0 ])
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then
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uci -q delete firewall.adblock_dns
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fi
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f_uci "${uci_config}"
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}
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# restart of the dns backend
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#
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f_dnsup()
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{
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local dns_up cache_util cache_rc cnt=0
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if [ ${adb_dnsflush} -eq 0 ] && [ ${adb_enabled} -eq 1 ] && [ "${adb_rc}" -eq 0 ]
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then
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case "${adb_dns}" in
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dnsmasq)
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killall -q -HUP "${adb_dns}"
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cache_rc=${?}
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;;
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unbound)
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cache_util="$(command -v unbound-control)"
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if [ -x "${cache_util}" ] && [ -d "${adb_tmpdir}" ] && [ -f "${adb_dnsdir}"/unbound.conf ]
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then
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"${cache_util}" -c "${adb_dnsdir}"/unbound.conf dump_cache > "${adb_tmpdir}"/adb_cache.dump 2>/dev/null
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fi
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"/etc/init.d/${adb_dns}" restart >/dev/null 2>&1
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;;
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kresd)
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cache_util="keep_cache"
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"/etc/init.d/${adb_dns}" restart >/dev/null 2>&1
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cache_rc=${?}
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;;
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named)
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cache_util="$(command -v rndc)"
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if [ -x "${cache_util}" ] && [ -f /etc/bind/rndc.conf ]
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then
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"${cache_util}" -c /etc/bind/rndc.conf reload >/dev/null 2>&1
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cache_rc=${?}
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else
|
|
"/etc/init.d/${adb_dns}" restart >/dev/null 2>&1
|
|
fi
|
|
;;
|
|
*)
|
|
"/etc/init.d/${adb_dns}" restart >/dev/null 2>&1
|
|
;;
|
|
esac
|
|
else
|
|
"/etc/init.d/${adb_dns}" restart >/dev/null 2>&1
|
|
fi
|
|
|
|
adb_rc=1
|
|
while [ ${cnt} -le 10 ]
|
|
do
|
|
dns_up="$(ubus -S call service list "{\"name\":\"${adb_dns}\"}" | jsonfilter -l1 -e "@[\"${adb_dns}\"].instances.*.running")"
|
|
if [ "${dns_up}" = "true" ]
|
|
then
|
|
case "${adb_dns}" in
|
|
unbound)
|
|
cache_util="$(command -v unbound-control)"
|
|
if [ -x "${cache_util}" ] && [ -d "${adb_tmpdir}" ] && [ -s "${adb_tmpdir}"/adb_cache.dump ]
|
|
then
|
|
while [ ${cnt} -le 10 ]
|
|
do
|
|
"${cache_util}" -c "${adb_dnsdir}"/unbound.conf load_cache < "${adb_tmpdir}"/adb_cache.dump >/dev/null 2>&1
|
|
cache_rc=${?}
|
|
if [ ${cache_rc} -eq 0 ]
|
|
then
|
|
break
|
|
fi
|
|
cnt=$((cnt+1))
|
|
sleep 1
|
|
done
|
|
fi
|
|
;;
|
|
esac
|
|
adb_rc=0
|
|
break
|
|
fi
|
|
cnt=$((cnt+1))
|
|
sleep 1
|
|
done
|
|
f_log "debug" "f_dnsup::: cache_util: ${cache_util:-"-"}, cache_rc: ${cache_rc:-"-"}, cache_flush: ${adb_dnsflush}, cache_cnt: ${cnt}, out_rc: ${adb_rc}"
|
|
}
|
|
|
|
# backup/restore/remove blocklists
|
|
#
|
|
f_list()
|
|
{
|
|
local mode="${1}" in_rc="${adb_rc}"
|
|
|
|
case "${mode}" in
|
|
backup)
|
|
if [ -d "${adb_backupdir}" ]
|
|
then
|
|
gzip -cf "${adb_tmpfile}" > "${adb_backupdir}/${adb_dnsprefix}.${src_name}.gz" 2>/dev/null
|
|
adb_rc=${?}
|
|
fi
|
|
;;
|
|
restore)
|
|
if [ -d "${adb_backupdir}" ] && [ -f "${adb_backupdir}/${adb_dnsprefix}.${src_name}.gz" ]
|
|
then
|
|
gunzip -cf "${adb_backupdir}/${adb_dnsprefix}.${src_name}.gz" > "${adb_tmpfile}" 2>/dev/null
|
|
adb_rc=${?}
|
|
fi
|
|
;;
|
|
remove)
|
|
if [ -d "${adb_backupdir}" ]
|
|
then
|
|
rm -f "${adb_backupdir}/${adb_dnsprefix}.${src_name}.gz"
|
|
fi
|
|
adb_rc=${?}
|
|
;;
|
|
merge)
|
|
if [ -s "${adb_tmpfile}" ]
|
|
then
|
|
cat "${adb_tmpfile}" >> "${adb_tmpdir}/${adb_dnsfile}"
|
|
adb_rc=${?}
|
|
fi
|
|
;;
|
|
final)
|
|
if [ -s "${adb_tmpdir}/tmp.whitelist" ]
|
|
then
|
|
grep -vf "${adb_tmpdir}/tmp.whitelist" "${adb_tmpdir}/${adb_dnsfile}" | eval "${adb_dnsformat}" > "${adb_dnsdir}/${adb_dnsfile}"
|
|
else
|
|
eval "${adb_dnsformat}" "${adb_tmpdir}/${adb_dnsfile}" > "${adb_dnsdir}/${adb_dnsfile}"
|
|
fi
|
|
if [ ${?} -eq 0 ] && [ -n "${adb_dnsheader}" ]
|
|
then
|
|
printf '%s\n' "${adb_dnsheader}" | cat - "${adb_dnsdir}/${adb_dnsfile}" > "${adb_tmpdir}/${adb_dnsfile}"
|
|
cat "${adb_tmpdir}/${adb_dnsfile}" > "${adb_dnsdir}/${adb_dnsfile}"
|
|
fi
|
|
adb_rc=${?}
|
|
;;
|
|
esac
|
|
f_count "${mode}"
|
|
f_log "debug" "f_list ::: mode: ${mode}, cnt: ${adb_cnt}, in_rc: ${in_rc}, out_rc: ${adb_rc}"
|
|
}
|
|
|
|
# top level domain compression
|
|
#
|
|
f_tld()
|
|
{
|
|
local cnt cnt_srt cnt_tld source="${1}" temp="${adb_tmpload}"
|
|
|
|
cnt="$(wc -l 2>/dev/null < "${source}")"
|
|
awk -F "." '{for(f=NF;f>1;f--)printf "%s.",$f;print $1}' "${source}" 2>/dev/null | sort -u > "${temp}"
|
|
cnt_srt="$(wc -l 2>/dev/null < "${temp}")"
|
|
awk '{if(NR==1){tld=$NF};while(getline){if($NF!~tld"\\."){print tld;tld=$NF}}print tld}' "${temp}" 2>/dev/null |\
|
|
awk -F "." '{for(f=NF;f>1;f--)printf "%s.",$f;print $1}' 2>/dev/null | sort > "${source}"
|
|
cnt_tld="$(wc -l 2>/dev/null < "${source}")"
|
|
f_log "debug" "f_tld ::: source: ${source}, cnt: ${cnt}, cnt_srt: ${cnt_srt}, cnt_tld: ${cnt_tld}"
|
|
}
|
|
|
|
# blocklist hash compare
|
|
#
|
|
f_hash()
|
|
{
|
|
local hash hash_rc=1
|
|
|
|
if [ -x "${adb_hashutil}" ] && [ -f "${adb_dnsdir}/${adb_dnsfile}" ]
|
|
then
|
|
hash="$(${adb_hashutil} "${adb_dnsdir}/${adb_dnsfile}" 2>/dev/null | awk '{print $1}')"
|
|
if [ -z "${adb_hashold}" ] && [ -n "${hash}" ]
|
|
then
|
|
adb_hashold="${hash}"
|
|
elif [ -z "${adb_hashnew}" ] && [ -n "${hash}" ]
|
|
then
|
|
adb_hashnew="${hash}"
|
|
fi
|
|
if [ -n "${adb_hashold}" ] && [ -n "${adb_hashnew}" ]
|
|
then
|
|
if [ "${adb_hashold}" = "${adb_hashnew}" ]
|
|
then
|
|
hash_rc=0
|
|
fi
|
|
adb_hashold=""
|
|
adb_hashnew=""
|
|
fi
|
|
fi
|
|
f_log "debug" "f_hash ::: hash_util: ${adb_hashutil}, hash: ${hash}, out_rc: ${hash_rc}"
|
|
return ${hash_rc}
|
|
}
|
|
|
|
# suspend/resume adblock processing
|
|
#
|
|
f_switch()
|
|
{
|
|
local mode="${1}"
|
|
|
|
if [ ! -s "${adb_dnsdir}/.${adb_dnsfile}" ] && [ "${mode}" = "suspend" ]
|
|
then
|
|
f_hash
|
|
cat "${adb_dnsdir}/${adb_dnsfile}" > "${adb_dnsdir}/.${adb_dnsfile}"
|
|
printf '%s\n' "${adb_dnsheader}" > "${adb_dnsdir}/${adb_dnsfile}"
|
|
f_hash
|
|
elif [ -s "${adb_dnsdir}/.${adb_dnsfile}" ] && [ "${mode}" = "resume" ]
|
|
then
|
|
f_hash
|
|
cat "${adb_dnsdir}/.${adb_dnsfile}" > "${adb_dnsdir}/${adb_dnsfile}"
|
|
> "${adb_dnsdir}/.${adb_dnsfile}"
|
|
f_hash
|
|
fi
|
|
if [ ${?} -eq 1 ]
|
|
then
|
|
f_temp
|
|
f_dnsup
|
|
f_jsnup
|
|
f_log "info" "${mode} adblock processing"
|
|
f_rmtemp
|
|
exit 0
|
|
fi
|
|
}
|
|
|
|
# query blocklist for certain (sub-)domains
|
|
#
|
|
f_query()
|
|
{
|
|
local search result cnt
|
|
local domain="${1}"
|
|
local tld="${domain#*.}"
|
|
|
|
if [ -z "${domain}" ] || [ "${domain}" = "${tld}" ]
|
|
then
|
|
printf "%s\n" "::: invalid domain input, please submit a single domain, e.g. 'doubleclick.net'"
|
|
else
|
|
cd "${adb_dnsdir}"
|
|
while [ "${domain}" != "${tld}" ]
|
|
do
|
|
search="${domain//./\.}"
|
|
if [ "${adb_dns}" = "dnsmasq" ] || [ "${adb_dns}" = "unbound" ]
|
|
then
|
|
result="$(awk -F '/|\"' "/[\/\"\.]${search}/{i++;{printf(\" + %s\n\",\$2)};if(i>9){exit}}" "${adb_dnsfile}")"
|
|
else
|
|
result="$(awk "/(^[^\*][[:alpha:]]*[\.]+${search}|^${search})/{i++;{printf(\" + %s\n\",\$1)};if(i>9){exit}}" "${adb_dnsfile}")"
|
|
fi
|
|
printf "%s\n" "::: results for domain '${domain}' (max. 10)"
|
|
printf "%s\n" "${result:-" - no match"}"
|
|
domain="${tld}"
|
|
tld="${domain#*.}"
|
|
done
|
|
fi
|
|
}
|
|
|
|
# update runtime information
|
|
#
|
|
f_jsnup()
|
|
{
|
|
local bg_pid rundate status="${1}" mode="normal mode"
|
|
|
|
if [ -z "${status}" ]
|
|
then
|
|
rundate="$(/bin/date "+%d.%m.%Y %H:%M:%S")"
|
|
if [ ${adb_rc} -gt 0 ]
|
|
then
|
|
status="error"
|
|
elif [ ${adb_enabled} -eq 0 ]
|
|
then
|
|
status="disabled"
|
|
elif [ -s "${adb_dnsdir}/.${adb_dnsfile}" ]
|
|
then
|
|
status="paused"
|
|
else
|
|
status="enabled"
|
|
f_count
|
|
fi
|
|
fi
|
|
|
|
if [ ${adb_backup_mode} -eq 1 ]
|
|
then
|
|
mode="normal/backup mode"
|
|
elif [ ${adb_whitelist_mode} -eq 1 ]
|
|
then
|
|
mode="whitelist mode"
|
|
fi
|
|
|
|
if [ -z "${adb_fetchinfo}" ] && [ -s "${adb_rtfile}" ]
|
|
then
|
|
json_load "$(cat "${adb_rtfile}" 2>/dev/null)"
|
|
json_select data
|
|
json_get_var adb_fetchinfo "fetch_utility"
|
|
fi
|
|
|
|
json_init
|
|
json_add_object "data"
|
|
json_add_string "adblock_status" "${status}"
|
|
json_add_string "adblock_version" "${adb_ver}"
|
|
json_add_string "overall_domains" "${adb_cnt} (${mode})"
|
|
json_add_string "fetch_utility" "${adb_fetchinfo:-"-"}"
|
|
json_add_string "dns_backend" "${adb_dns} (${adb_dnsdir})"
|
|
json_add_string "last_rundate" "${rundate:-"-"}"
|
|
json_add_string "system_release" "${adb_sysver}"
|
|
json_close_object
|
|
json_dump > "${adb_rtfile}"
|
|
|
|
if [ ${adb_notify} -eq 1 ] && [ -x /etc/adblock/adblock.notify ] && ([ "${status}" = "error" ] ||\
|
|
([ "${status}" = "enabled" ] && [ ${adb_whitelist_mode} -eq 0 ] && [ ${adb_cnt} -le ${adb_notifycnt} ]))
|
|
then
|
|
(/etc/adblock/adblock.notify >/dev/null 2>&1) &
|
|
bg_pid=${!}
|
|
fi
|
|
f_log "debug" "f_jsnup::: status: ${status}, mode: ${mode}, cnt: ${adb_cnt}, notify: ${adb_notify}, notify_cnt: ${adb_notifycnt}, notify_pid: ${bg_pid:-"-"}"
|
|
}
|
|
|
|
# write to syslog
|
|
#
|
|
f_log()
|
|
{
|
|
local class="${1}" log_msg="${2}"
|
|
|
|
if [ -n "${log_msg}" ] && ([ "${class}" != "debug" ] || [ ${adb_debug} -eq 1 ])
|
|
then
|
|
logger -p "${class}" -t "adblock-[${adb_ver}]" "${log_msg}"
|
|
if [ "${class}" = "err" ]
|
|
then
|
|
f_rmdns
|
|
f_jsnup
|
|
logger -p "${class}" -t "adblock-[${adb_ver}]" "Please also check 'https://github.com/openwrt/packages/blob/master/net/adblock/files/README.md' (${adb_sysver})"
|
|
exit 1
|
|
fi
|
|
fi
|
|
}
|
|
|
|
# main function for blocklist processing
|
|
#
|
|
f_main()
|
|
{
|
|
local src_name src_rset src_log src_arc enabled url mem_total="$(awk '/^MemTotal/ {print int($2/1000)}' "/proc/meminfo")"
|
|
|
|
f_log "debug" "f_main ::: dns: ${adb_dns}, fetch_util: ${adb_fetchinfo}, backup: ${adb_backup}, backup_mode: ${adb_backup_mode}, whitelist_mode: ${adb_whitelist_mode}, force_srt: ${adb_forcesrt}, force_dns: ${adb_forcedns}, mem_total: ${mem_total}"
|
|
> "${adb_dnsdir}/.${adb_dnsfile}"
|
|
> "${adb_tmpdir}/tmp.whitelist"
|
|
|
|
# prepare whitelist entries
|
|
#
|
|
if [ -s "${adb_whitelist}" ]
|
|
then
|
|
if [ ${adb_whitelist_mode} -eq 1 ] && [ "${adb_dns}" != "dnscrypt-proxy" ]
|
|
then
|
|
adb_whitelist_rset="\$0~/^([[:alnum:]_-]+\.){1,}[[:alpha:]]+([[:space:]]|$)/{print tolower(\$1)}"
|
|
else
|
|
adb_whitelist_rset="\$0~/^([[:alnum:]_-]+\.){1,}[[:alpha:]]+([[:space:]]|$)/{gsub(\"\\\.\",\"\\\.\",\$1);print tolower(\"^\"\$1\"\\\|\\\.\"\$1)}"
|
|
fi
|
|
awk "${adb_whitelist_rset}" "${adb_whitelist}" > "${adb_tmpdir}/tmp.whitelist"
|
|
fi
|
|
|
|
# whitelist mode processing
|
|
#
|
|
if [ ${adb_whitelist_mode} -eq 1 ] && [ "${adb_dns}" != "dnscrypt-proxy" ]
|
|
then
|
|
f_hash
|
|
f_tld "${adb_tmpdir}/tmp.whitelist"
|
|
eval "${adb_dnsformat}" "${adb_tmpdir}/tmp.whitelist" > "${adb_dnsdir}/${adb_dnsfile}"
|
|
printf '%s\n' "${adb_dnsblock}" >> "${adb_dnsdir}/${adb_dnsfile}"
|
|
if [ -n "${adb_dnsheader}" ]
|
|
then
|
|
printf '%s\n' "${adb_dnsheader}" | cat - "${adb_dnsdir}/${adb_dnsfile}" > "${adb_tmpdir}/${adb_dnsfile}"
|
|
cat "${adb_tmpdir}/${adb_dnsfile}" > "${adb_dnsdir}/${adb_dnsfile}"
|
|
fi
|
|
f_hash
|
|
if [ ${?} -eq 1 ]
|
|
then
|
|
f_dnsup
|
|
fi
|
|
f_jsnup
|
|
if [ ${adb_rc} -eq 0 ]
|
|
then
|
|
f_log "info" "whitelist with overall ${adb_cnt} domains loaded successfully (${adb_sysver})"
|
|
return 0
|
|
else
|
|
f_log "err" "dns backend restart with active whitelist failed"
|
|
fi
|
|
fi
|
|
|
|
# normal & backup mode processing
|
|
#
|
|
for src_name in ${adb_sources}
|
|
do
|
|
eval "enabled=\"\${enabled_${src_name}}\""
|
|
eval "url=\"\${adb_src_${src_name}}\""
|
|
eval "src_rset=\"\${adb_src_rset_${src_name}}\""
|
|
> "${adb_tmpload}"
|
|
> "${adb_tmpfile}"
|
|
adb_rc=1
|
|
|
|
# basic pre-checks
|
|
#
|
|
f_log "debug" "f_main ::: name: ${src_name}, enabled: ${enabled}"
|
|
if [ "${enabled}" != "1" ] || [ -z "${url}" ] || [ -z "${src_rset}" ]
|
|
then
|
|
f_list remove
|
|
continue
|
|
fi
|
|
|
|
# backup mode
|
|
#
|
|
if [ ${adb_backup_mode} -eq 1 ] && [ "${adb_action}" = "start" ] && [ "${src_name}" != "blacklist" ]
|
|
then
|
|
f_list restore
|
|
if [ ${adb_rc} -eq 0 ] && [ -s "${adb_tmpfile}" ]
|
|
then
|
|
f_list merge
|
|
continue
|
|
fi
|
|
fi
|
|
|
|
# download blocklist
|
|
#
|
|
if [ "${src_name}" = "blacklist" ]
|
|
then
|
|
if [ -s "${url}" ]
|
|
then
|
|
cat "${url}" > "${adb_tmpload}"
|
|
adb_rc=${?}
|
|
fi
|
|
elif [ "${src_name}" = "shalla" ]
|
|
then
|
|
src_arc="${adb_tmpdir}/shallalist.tar.gz"
|
|
src_log="$("${adb_fetchutil}" ${adb_fetchparm} "${src_arc}" "${url}" 2>&1)"
|
|
adb_rc=${?}
|
|
if [ ${adb_rc} -eq 0 ]
|
|
then
|
|
for category in ${adb_src_cat_shalla}
|
|
do
|
|
tar -xOzf "${src_arc}" "BL/${category}/domains" >> "${adb_tmpload}"
|
|
adb_rc=${?}
|
|
if [ ${adb_rc} -ne 0 ]
|
|
then
|
|
break
|
|
fi
|
|
done
|
|
fi
|
|
rm -f "${src_arc}"
|
|
rm -rf "${adb_tmpdir}/BL"
|
|
else
|
|
src_log="$("${adb_fetchutil}" ${adb_fetchparm} "${adb_tmpload}" "${url}" 2>&1)"
|
|
adb_rc=${?}
|
|
fi
|
|
if [ ${adb_rc} -ne 0 ] && [ "${src_name}" != "blacklist" ]
|
|
then
|
|
f_log "debug" "f_main ::: url: ${url}, rc: ${adb_rc}, src_log: ${src_log:-"-"}"
|
|
fi
|
|
|
|
# check download result and prepare list output
|
|
#
|
|
if [ ${adb_rc} -eq 0 ] && [ -s "${adb_tmpload}" ]
|
|
then
|
|
awk "${src_rset}" "${adb_tmpload}" 2>/dev/null > "${adb_tmpfile}"
|
|
if [ -s "${adb_tmpfile}" ]
|
|
then
|
|
if [ ${mem_total} -lt 64 ] && [ ${adb_forcesrt} -eq 0 ]
|
|
then
|
|
f_tld "${adb_tmpfile}"
|
|
fi
|
|
if [ ${adb_backup} -eq 1 ] && [ "${src_name}" != "blacklist" ]
|
|
then
|
|
f_list backup
|
|
fi
|
|
elif [ ${adb_backup} -eq 1 ]
|
|
then
|
|
f_list restore
|
|
fi
|
|
elif [ ${adb_backup} -eq 1 ] && [ "${src_name}" != "blacklist" ]
|
|
then
|
|
f_list restore
|
|
fi
|
|
|
|
# list merge
|
|
#
|
|
if [ ${adb_rc} -eq 0 ] && [ -s "${adb_tmpfile}" ]
|
|
then
|
|
f_list merge
|
|
if [ ${adb_rc} -ne 0 ]
|
|
then
|
|
f_list remove
|
|
fi
|
|
else
|
|
f_list remove
|
|
fi
|
|
done
|
|
|
|
# overall sort and conditional dns restart
|
|
#
|
|
f_hash
|
|
if [ -s "${adb_tmpdir}/${adb_dnsfile}" ]
|
|
then
|
|
if [ ${mem_total} -ge 64 ] || [ ${adb_forcesrt} -eq 1 ]
|
|
then
|
|
f_tld "${adb_tmpdir}/${adb_dnsfile}"
|
|
fi
|
|
f_list final
|
|
else
|
|
> "${adb_dnsdir}/${adb_dnsfile}"
|
|
fi
|
|
chown "${adb_dnsuser}" "${adb_dnsdir}/${adb_dnsfile}" 2>/dev/null
|
|
|
|
f_hash
|
|
if [ ${?} -eq 1 ]
|
|
then
|
|
f_dnsup
|
|
fi
|
|
f_jsnup
|
|
if [ ${adb_rc} -eq 0 ]
|
|
then
|
|
f_log "info" "blocklist with overall ${adb_cnt} domains loaded successfully (${adb_sysver})"
|
|
else
|
|
f_log "err" "dns backend restart with active blocklist failed"
|
|
fi
|
|
f_rmtemp
|
|
exit ${adb_rc}
|
|
}
|
|
|
|
# handle different adblock actions
|
|
#
|
|
f_envload
|
|
case "${adb_action}" in
|
|
stop)
|
|
f_rmdns
|
|
;;
|
|
restart)
|
|
f_rmdns
|
|
f_envcheck
|
|
f_main
|
|
;;
|
|
suspend)
|
|
f_switch suspend
|
|
;;
|
|
resume)
|
|
f_switch resume
|
|
;;
|
|
query)
|
|
f_query "${2}"
|
|
;;
|
|
start|reload)
|
|
f_envcheck
|
|
f_main
|
|
;;
|
|
esac
|