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#!/bin/sh
# function library used by adblock-update.sh
# written by Dirk Brenken (dev@brenken.org)
# set initial defaults
#
LC_ALL=C
PATH="/usr/sbin:/usr/bin:/sbin:/bin"
adb_hotplugif=""
adb_lanif="lan"
adb_nullport="65534"
adb_nullportssl="65535"
adb_nullipv4="198.18.0.1"
adb_nullipv6="::ffff:c612:0001"
adb_whitelist="/etc/adblock/adblock.whitelist"
adb_whitelist_rset="\$1 ~/^([A-Za-z0-9_-]+\.){1,}[A-Za-z]+/{print tolower(\"^\"\$1\"\\\|[.]\"\$1)}"
adb_dnsdir="/tmp/dnsmasq.d"
adb_dnshidedir="${adb_dnsdir}/.adb_hidden"
adb_dnsprefix="adb_list"
adb_count=0
adb_minspace=12000
adb_forcedns=1
adb_fetchttl=5
adb_restricted=0
adb_uci="$(which uci)"
# f_envload: load adblock environment
#
f_envload()
{
# source in system function library
#
if [ -r "/lib/functions.sh" ]
then
. "/lib/functions.sh"
else
rc=-10
f_log "system function library not found, please check your installation"
f_exit
fi
# source in system network library
#
if [ -r "/lib/functions/network.sh" ]
then
. "/lib/functions/network.sh"
else
rc=-10
f_log "system network library not found, please check your installation"
f_exit
fi
# check opkg availability
#
if [ -f "/var/lock/opkg.lock" ]
then
rc=-10
f_log "adblock installation finished successfully, 'opkg' currently locked by package installer"
f_exit
fi
# uci function to parse global section by callback
#
config_cb()
{
local type="${1}"
if [ "${type}" = "adblock" ]
then
option_cb()
{
local option="${1}"
local value="${2}"
eval "${option}=\"${value}\""
}
else
reset_cb
fi
}
# uci function to parse 'service' and 'source' sections
#
parse_config()
{
local value opt section="${1}" options="enabled adb_dir adb_src adb_src_rset adb_src_cat"
if [ "${section}" != "backup" ]
then
eval "adb_sources=\"${adb_sources} ${section}\""
fi
for opt in ${options}
do
config_get value "${section}" "${opt}"
if [ -n "${value}" ]
then
eval "${opt}_${section}=\"${value}\""
fi
done
}
# load adblock config and start parsing functions
#
config_load adblock
config_foreach parse_config service
config_foreach parse_config source
# get network basics
#
network_get_ipaddr adb_ipv4 "${adb_lanif}"
network_get_ipaddr6 adb_ipv6 "${adb_lanif}"
network_get_device adb_landev "${adb_lanif}"
network_find_wan adb_wanif4
network_find_wan6 adb_wanif6
}
# f_envcheck: check/set environment prerequisites
#
f_envcheck()
{
local check
# check 'enabled' & 'version' config options
#
if [ -z "${adb_enabled}" ] || [ -z "${adb_cfgver}" ] || [ "${adb_cfgver%%.*}" != "${adb_mincfgver%%.*}" ]
then
rc=-1
f_log "outdated adblock config (${adb_mincfgver} vs. ${adb_cfgver}), please run '/etc/init.d/adblock cfgup' to update your configuration"
f_exit
elif [ "${adb_cfgver#*.}" != "${adb_mincfgver#*.}" ]
then
outdated_ok="true"
fi
if [ "${adb_enabled}" != "1" ]
then
rc=-10
f_log "adblock is currently disabled, please set adblock.global.adb_enabled=1' to use this service"
f_exit
fi
# get list with all installed packages
#
pkg_list="$(opkg list-installed)"
if [ -z "${pkg_list}" ]
then
rc=-1
f_log "empty 'opkg' package list, please check your installation"
f_exit
fi
adb_sysver="$(printf "${pkg_list}" | grep "^base-files -")"
adb_sysver="${adb_sysver##*-}"
# get lan ip addresses
#
if [ -z "${adb_ipv4}" ] && [ -z "${adb_ipv6}" ]
then
rc=-1
f_log "no valid IPv4/IPv6 configuration found (${adb_lanif}), please set 'adb_lanif' manually"
f_exit
fi
# check logical update interfaces (with default route)
#
if [ -z "${adb_wanif4}" ] && [ -z "${adb_wanif6}" ]
then
adb_wanif4="${adb_lanif}"
fi
# check AP mode
#
if [ "${adb_wanif4}" = "${adb_lanif}" ] || [ "${adb_wanif6}" = "${adb_lanif}" ]
then
adb_nullipv4="${adb_ipv4}"
adb_nullipv6="${adb_ipv6}"
if [ -n "$(${adb_uci} -q get uhttpd.main.listen_http | grep -Fo "80")" ] ||
[ -n "$(${adb_uci} -q get uhttpd.main.listen_https | grep -Fo "443")" ]
then
rc=-1
f_log "AP mode detected, please set local LuCI instance to ports <> 80/443"
f_exit
elif [ ! -f "/etc/init.d/dnsmasq" ]
then
rc=-1
f_log "please enable the local dnsmasq instance to use adblock"
f_exit
elif [ ! -f "/var/run/fw3.state" ]
then
rc=-1
f_log "please enable the local firewall to use adblock"
f_exit
else
apmode_ok="true"
fi
else
apmode_ok="false"
check="$(${adb_uci} -q get bcp38.@bcp38[0].enabled)"
if [ "${check}" = "1" ]
then
if [ -n "$(${adb_uci} -q get bcp38.@bcp38[0].match | grep -Fo "${adb_nullipv4%.*}")" ]
then
rc=-1
f_log "please whitelist '${adb_nullipv4}' in your bcp38 configuration to use adblock"
f_exit
fi
fi
fi
# check general package dependencies
#
f_depend "busybox"
f_depend "uci"
f_depend "uhttpd"
f_depend "iptables"
f_depend "kmod-ipt-nat"
# check ipv6 related package dependencies
#
if [ -n "${adb_wanif6}" ]
then
f_depend "ip6tables" "true"
if [ "${package_ok}" = "false" ]
then
f_log "package 'ip6tables' not found, IPv6 support will be disabled"
unset adb_wanif6
else
f_depend "kmod-ipt-nat6" "true"
if [ "${package_ok}" = "false" ]
then
f_log "package 'kmod-ipt-nat6' not found, IPv6 support will be disabled"
unset adb_wanif6
fi
fi
fi
# check uclient-fetch/wget dependencies
#
f_depend "uclient-fetch" "true"
if [ "${package_ok}" = "true" ]
then
f_depend "libustream-polarssl" "true"
if [ "${package_ok}" = "false" ]
then
f_depend "libustream-\(mbedtls\|openssl\|cyassl\)" "true"
if [ "${package_ok}" = "true" ]
then
adb_fetch="$(which uclient-fetch)"
fetch_parm="-q --timeout=${adb_fetchttl}"
response_parm="--spider"
fi
fi
fi
if [ -z "${adb_fetch}" ]
then
f_depend "wget" "true"
if [ "${package_ok}" = "true" ]
then
adb_fetch="$(which wget)"
fetch_parm="--no-config --quiet --tries=1 --no-cache --no-cookies --max-redirect=0 --dns-timeout=${adb_fetchttl} --connect-timeout=${adb_fetchttl} --read-timeout=${adb_fetchttl}"
response_parm="--spider --server-response"
else
rc=-1
f_log "please install 'uclient-fetch' or 'wget' with ssl support to use adblock"
f_exit
fi
fi
# check ca-certificate package and set fetch parm accordingly
#
f_depend "ca-certificates" "true"
if [ "${package_ok}" = "false" ]
then
fetch_parm="${fetch_parm} --no-check-certificate"
fi
# start normal processing/logging
#
f_log "domain adblock processing started (${adb_scriptver}, ${adb_sysver}, $(/bin/date "+%d.%m.%Y %H:%M:%S"))"
# log partially outdated config
#
if [ "${outdated_ok}" = "true" ]
then
f_log "partially outdated adblock config (${adb_mincfgver} vs. ${adb_cfgver}), please run '/etc/init.d/adblock cfgup' to update your configuration"
fi
# log ap mode
#
if [ "${apmode_ok}" = "true" ]
then
f_log "AP mode enabled"
fi
# set/log restricted mode
#
if [ "${adb_restricted}" = "1" ]
then
adb_uci="$(which true)"
f_log "Restricted mode enabled"
fi
# check dns hideout directory
#
if [ -d "${adb_dnshidedir}" ]
then
mv_done="$(find "${adb_dnshidedir}" -maxdepth 1 -type f -name "${adb_dnsprefix}*" -print -exec mv -f "{}" "${adb_dnsdir}" \;)"
else
mkdir -p -m 660 "${adb_dnshidedir}"
fi
# check adblock temp directory
#
adb_tmpfile="$(mktemp -tu)"
adb_tmpdir="$(mktemp -p /tmp -d)"
if [ -n "${adb_tmpdir}" ] && [ -d "${adb_tmpdir}" ]
then
f_space "${adb_tmpdir}"
if [ "${space_ok}" = "false" ]
then
if [ $((av_space)) -le 2000 ]
then
rc=105
f_log "not enough free space in '${adb_tmpdir}' (avail. ${av_space} kb)"
f_exit
else
f_log "not enough free space to handle all block list sources at once in '${adb_tmpdir}' (avail. ${av_space} kb)"
fi
fi
else
rc=110
f_log "temp directory not found"
f_exit
fi
# check memory
#
mem_total="$(awk '$1 ~ /^MemTotal/ {printf $2}' "/proc/meminfo")"
mem_free="$(awk '$1 ~ /^MemFree/ {printf $2}' "/proc/meminfo")"
mem_swap="$(awk '$1 ~ /^SwapTotal/ {printf $2}' "/proc/meminfo")"
if [ $((mem_total)) -le 64000 ] && [ $((mem_swap)) -eq 0 ]
then
mem_ok="false"
f_log "not enough free memory, overall sort processing will be disabled (total: ${mem_total}, free: ${mem_free}, swap: ${mem_swap})"
else
mem_ok="true"
fi
# check backup configuration
#
if [ "${enabled_backup}" = "1" ] && [ -d "${adb_dir_backup}" ]
then
f_space "${adb_dir_backup}"
if [ "${space_ok}" = "false" ]
then
f_log "not enough free space in '${adb_dir_backup}'(avail. ${av_space} kb), backup/restore will be disabled"
backup_ok="false"
else
f_log "backup/restore will be enabled"
backup_ok="true"
fi
else
backup_ok="false"
f_log "backup/restore will be disabled"
fi
# set dnsmasq defaults
#
if [ -n "${adb_wanif4}" ] && [ -n "${adb_wanif6}" ]
then
adb_dnsformat="awk -v ipv4="${adb_nullipv4}" -v ipv6="${adb_nullipv6}" '{print \"address=/\"\$0\"/\"ipv4\"\n\"\"address=/\"\$0\"/\"ipv6}'"
elif [ -n "${adb_wanif4}" ]
then
adb_dnsformat="awk -v ipv4="${adb_nullipv4}" '{print \"address=/\"\$0\"/\"ipv4}'"
else
adb_dnsformat="awk -v ipv6="${adb_nullipv6}" '{print \"address=/\"\$0\"/\"ipv6}'"
fi
# check volatile iptables configuration
#
if [ -n "${adb_wanif4}" ]
then
if [ "${apmode_ok}" = "false" ]
then
if [ "${adb_forcedns}" = "1" ] && [ -n "${adb_landev}" ]
then
f_firewall "IPv4" "nat" "prerouting_rule" "adb-dns" "1" "dns" "-p udp --dport 53 -j DNAT --to-destination ${adb_ipv4}:53"
f_firewall "IPv4" "nat" "prerouting_rule" "adb-dns" "2" "dns" "-p tcp --dport 53 -j DNAT --to-destination ${adb_ipv4}:53"
fi
f_firewall "IPv4" "filter" "forwarding_rule" "adb-fwd" "1" "fwd" "-p tcp -j REJECT --reject-with tcp-reset"
f_firewall "IPv4" "filter" "forwarding_rule" "adb-fwd" "2" "fwd" "-j REJECT --reject-with icmp-host-unreachable"
f_firewall "IPv4" "filter" "output_rule" "adb-out" "1" "out" "-p tcp -j REJECT --reject-with tcp-reset"
f_firewall "IPv4" "filter" "output_rule" "adb-out" "2" "out" "-j REJECT --reject-with icmp-host-unreachable"
fi
f_firewall "IPv4" "nat" "prerouting_rule" "adb-nat" "1" "nat" "-p tcp --dport 80 -j DNAT --to-destination ${adb_ipv4}:${adb_nullport}"
f_firewall "IPv4" "nat" "prerouting_rule" "adb-nat" "2" "nat" "-p tcp --dport 443 -j DNAT --to-destination ${adb_ipv4}:${adb_nullportssl}"
fi
if [ -n "${adb_wanif6}" ]
then
if [ "${apmode_ok}" = "false" ]
then
if [ "${adb_forcedns}" = "1" ] && [ -n "${adb_landev}" ]
then
f_firewall "IPv6" "nat" "PREROUTING" "adb-dns" "1" "dns" "-p udp --dport 53 -j DNAT --to-destination [${adb_ipv6}]:53"
f_firewall "IPv6" "nat" "PREROUTING" "adb-dns" "2" "dns" "-p tcp --dport 53 -j DNAT --to-destination [${adb_ipv6}]:53"
fi
f_firewall "IPv6" "filter" "forwarding_rule" "adb-fwd" "1" "fwd" "-p tcp -j REJECT --reject-with tcp-reset"
f_firewall "IPv6" "filter" "forwarding_rule" "adb-fwd" "2" "fwd" "-j REJECT --reject-with icmp6-addr-unreachable"
f_firewall "IPv6" "filter" "output_rule" "adb-out" "1" "out" "-p tcp -j REJECT --reject-with tcp-reset"
f_firewall "IPv6" "filter" "output_rule" "adb-out" "2" "out" "-j REJECT --reject-with icmp6-addr-unreachable"
fi
f_firewall "IPv6" "nat" "PREROUTING" "adb-nat" "1" "nat" "-p tcp --dport 80 -j DNAT --to-destination [${adb_ipv6}]:${adb_nullport}"
f_firewall "IPv6" "nat" "PREROUTING" "adb-nat" "2" "nat" "-p tcp --dport 443 -j DNAT --to-destination [${adb_ipv6}]:${adb_nullportssl}"
fi
if [ "${firewall_ok}" = "true" ]
then
f_log "created volatile firewall rulesets"
fi
# check volatile uhttpd instance configuration
#
if [ -n "${adb_wanif4}" ] && [ -n "${adb_wanif6}" ]
then
f_uhttpd "adbIPv4+6_80" "1" "-p ${adb_ipv4}:${adb_nullport} -p [${adb_ipv6}]:${adb_nullport}"
f_uhttpd "adbIPv4+6_443" "0" "-p ${adb_ipv4}:${adb_nullportssl} -p [${adb_ipv6}]:${adb_nullportssl}"
elif [ -n "${adb_wanif4}" ]
then
f_uhttpd "adbIPv4_80" "1" "-p ${adb_ipv4}:${adb_nullport}"
f_uhttpd "adbIPv4_443" "0" "-p ${adb_ipv4}:${adb_nullportssl}"
else
f_uhttpd "adbIPv6_80" "1" "-p [${adb_ipv6}]:${adb_nullport}"
f_uhttpd "adbIPv6_443" "0" "-p [${adb_ipv6}]:${adb_nullportssl}"
fi
if [ "${uhttpd_ok}" = "true" ]
then
f_log "created volatile uhttpd instances"
fi
# check whitelist entries
#
if [ -s "${adb_whitelist}" ]
then
awk "${adb_whitelist_rset}" "${adb_whitelist}" > "${adb_tmpdir}/tmp.whitelist"
fi
# remove temporary package list
#
unset pkg_list
}
# f_depend: check package dependencies
#
f_depend()
{
local check
local package="${1}"
local check_only="${2}"
package_ok="true"
check="$(printf "${pkg_list}" | grep "^${package} -")"
if [ "${check_only}" = "true" ] && [ -z "${check}" ]
then
package_ok="false"
elif [ -z "${check}" ]
then
rc=-1
f_log "package '${package}' not found"
f_exit
fi
}
# f_firewall: set iptables rules for ipv4/ipv6
#
f_firewall()
{
local ipt="iptables"
local nullip="${adb_nullipv4}"
local proto="${1}"
local table="${2}"
local chsrc="${3}"
local chain="${4}"
local chpos="${5}"
local notes="adb-${6}"
local rules="${7}"
# select appropriate iptables executable for IPv6
#
if [ "${proto}" = "IPv6" ]
then
ipt="ip6tables"
nullip="${adb_nullipv6}"
fi
# check whether iptables chain already exist
#
rc="$("${ipt}" -w -t "${table}" -nL "${chain}" >/dev/null 2>&1; printf ${?})"
if [ $((rc)) -ne 0 ]
then
"${ipt}" -w -t "${table}" -N "${chain}"
"${ipt}" -w -t "${table}" -A "${chain}" -m comment --comment "${notes}" -j RETURN
if [ "${chain}" = "adb-dns" ]
then
"${ipt}" -w -t "${table}" -A "${chsrc}" -i "${adb_landev}+" -m comment --comment "${notes}" -j "${chain}"
else
"${ipt}" -w -t "${table}" -A "${chsrc}" -d "${nullip}" -m comment --comment "${notes}" -j "${chain}"
fi
rc=${?}
if [ $((rc)) -ne 0 ]
then
f_log "failed to initialize volatile ${proto} firewall chain '${chain}'"
f_exit
fi
fi
# check whether iptables rule already exist
#
rc="$("${ipt}" -w -t "${table}" -C "${chain}" -m comment --comment "${notes}" ${rules} >/dev/null 2>&1; printf ${?})"
if [ $((rc)) -ne 0 ]
then
"${ipt}" -w -t "${table}" -I "${chain}" "${chpos}" -m comment --comment "${notes}" ${rules}
rc=${?}
if [ $((rc)) -eq 0 ]
then
firewall_ok="true"
else
f_log "failed to initialize volatile ${proto} firewall rule '${notes}'"
f_exit
fi
fi
}
# f_uhttpd: start uhttpd instances
#
f_uhttpd()
{
local check
local realm="${1}"
local timeout="${2}"
local ports="${3}"
check="$(pgrep -f "uhttpd -h /www/adblock -N 25 -T ${timeout} -r ${realm}")"
if [ -z "${check}" ]
then
uhttpd -h "/www/adblock" -N 25 -T "${timeout}" -r "${realm}" -k 0 -t 0 -R -D -S -E "/index.html" ${ports}
rc=${?}
if [ $((rc)) -eq 0 ]
then
uhttpd_ok="true"
else
f_log "failed to initialize volatile uhttpd instance (${realm})"
f_exit
fi
fi
}
# f_space: check mount points/space requirements
#
f_space()
{
local mp="${1}"
space_ok="true"
if [ -d "${mp}" ]
then
av_space="$(df "${mp}" | tail -n1 | awk '{printf $4}')"
if [ $((av_space)) -lt $((adb_minspace)) ]
then
space_ok="false"
fi
fi
}
# f_cntconfig: calculate counters in config
#
f_cntconfig()
{
local src_name
local count=0
for src_name in $(ls -ASr "${adb_dnsdir}/${adb_dnsprefix}"*)
do
count="$(wc -l < "${src_name}")"
src_name="${src_name##*.}"
if [ -n "${adb_wanif4}" ] && [ -n "${adb_wanif6}" ]
then
count=$((count / 2))
fi
"${adb_uci}" -q set "adblock.${src_name}.adb_src_count=${count}"
adb_count=$((adb_count + count))
done
"${adb_uci}" -q set "adblock.global.adb_overall_count=${adb_count}"
}
# f_rmconfig: remove volatile config entries
#
f_rmconfig()
{
local opt
local options="adb_src_timestamp adb_src_count"
local section="${1}"
"${adb_uci}" -q delete "adblock.global.adb_overall_count"
"${adb_uci}" -q delete "adblock.global.adb_dnstoggle"
"${adb_uci}" -q delete "adblock.global.adb_percentage"
"${adb_uci}" -q delete "adblock.global.adb_lastrun"
for opt in ${options}
do
"${adb_uci}" -q delete "adblock.${section}.${opt}"
done
}
# f_rmdns: remove dns block lists and backups
#
f_rmdns()
{
rm_dns="$(find "${adb_dnsdir}" -maxdepth 1 -type f -name "${adb_dnsprefix}*" -print -exec rm -f "{}" \;)"
if [ -n "${rm_dns}" ]
then
rm -rf "${adb_dnshidedir}"
if [ "${enabled_backup}" = "1" ] && [ -d "${adb_dir_backup}" ]
then
rm -f "${adb_dir_backup}/${adb_dnsprefix}"*.gz
fi
/etc/init.d/dnsmasq restart
fi
}
# f_rmuhttpd: remove uhttpd instances
#
f_rmuhttpd()
{
rm_uhttpd="$(pgrep -f "uhttpd -h /www/adblock")"
if [ -n "${rm_uhttpd}" ]
then
for pid in ${rm_uhttpd}
do
kill -9 "${pid}"
done
fi
}
# f_rmfirewall: remove firewall rulsets
#
f_rmfirewall()
{
rm_fw="$(iptables -w -t nat -vnL | grep -Fo "adb-")"
if [ -n "${rm_fw}" ]
then
iptables-save -t nat | grep -Fv -- "adb-" | iptables-restore
iptables-save -t filter | grep -Fv -- "adb-" | iptables-restore
if [ -n "$(lsmod | grep -Fo "ip6table_nat")" ]
then
ip6tables-save -t nat | grep -Fv -- "adb-" | ip6tables-restore
ip6tables-save -t filter | grep -Fv -- "adb-" | ip6tables-restore
fi
fi
}
# f_log: log messages to stdout and syslog
#
f_log()
{
local log_parm
local log_msg="${1}"
local class="info "
# check for terminal session
#
if [ -t 1 ]
then
log_parm="-s"
fi
# log to different output devices and set log class accordingly
#
if [ -n "${log_msg}" ]
then
if [ $((rc)) -gt 0 ]
then
class="error"
fi
logger ${log_parm} -t "adblock[${adb_pid}] ${class}" "${log_msg}" 2>&1
fi
}
# f_statistics: adblock runtime statistics
f_statistics()
{
local ipv4_blk=0 ipv4_all=0 ipv4_pct=0
local ipv6_blk=0 ipv6_all=0 ipv6_pct=0
if [ -n "${adb_wanif4}" ]
then
ipv4_blk="$(iptables -t nat -vxnL adb-nat | awk '$3 ~ /^DNAT$/ {sum += $1} END {printf sum}')"
ipv4_all="$(iptables -t nat -vxnL PREROUTING | awk '$3 ~ /^(delegate_prerouting|prerouting_rule)$/ {sum += $1} END {printf sum}')"
if [ $((ipv4_all)) -gt 0 ] && [ $((ipv4_blk)) -gt 0 ] && [ $((ipv4_all)) -gt $((ipv4_blk)) ]
then
ipv4_pct="$(printf "${ipv4_blk}" | awk -v all="${ipv4_all}" '{printf( "%5.2f\n",$1/all*100)}')"
elif [ $((ipv4_all)) -lt $((ipv4_blk)) ]
then
iptables -t nat -Z adb-nat
fi
fi
if [ -n "${adb_wanif6}" ]
then
ipv6_blk="$(ip6tables -t nat -vxnL adb-nat | awk '$3 ~ /^DNAT$/ {sum += $1} END {printf sum}')"
ipv6_all="$(ip6tables -t nat -vxnL PREROUTING | awk '$3 ~ /^(adb-nat|DNAT)$/ {sum += $1} END {printf sum}')"
if [ $((ipv6_all)) -gt 0 ] && [ $((ipv6_blk)) -gt 0 ] && [ $((ipv6_all)) -gt $((ipv6_blk)) ]
then
ipv6_pct="$(printf "${ipv6_blk}" | awk -v all="${ipv6_all}" '{printf( "%5.2f\n",$1/all*100)}')"
elif [ $((ipv6_all)) -lt $((ipv6_blk)) ]
then
ip6tables -t nat -Z adb-nat
fi
fi
"${adb_uci}" -q set "adblock.global.adb_percentage=${ipv4_pct}%/${ipv6_pct}%"
f_log "firewall statistics (IPv4/IPv6): ${ipv4_pct}%/${ipv6_pct}% of all packets in prerouting chain are ad related & blocked"
}
# f_exit: delete temporary files, generate statistics and exit
#
f_exit()
{
local lastrun="$(date "+%d.%m.%Y %H:%M:%S")"
if [ "${adb_restricted}" = "1" ]
then
adb_uci="$(which true)"
fi
# delete temp files & directories
#
rm -f "${adb_tmpfile}"
rm -rf "${adb_tmpdir}"
# tidy up on error
#
if [ $((rc)) -lt 0 ] || [ $((rc)) -gt 0 ]
then
f_rmdns
f_rmuhttpd
f_rmfirewall
config_foreach f_rmconfig source
if [ $((rc)) -eq -1 ]
then
"${adb_uci}" -q set "adblock.global.adb_lastrun=${lastrun} => runtime error, please check the log!"
fi
fi
# final log message and iptables statistics
#
if [ $((rc)) -eq 0 ]
then
f_statistics
"${adb_uci}" -q set "adblock.global.adb_lastrun=${lastrun}"
f_log "domain adblock processing finished successfully (${adb_scriptver}, ${adb_sysver}, ${lastrun})"
elif [ $((rc)) -gt 0 ]
then
f_log "domain adblock processing failed (${adb_scriptver}, ${adb_sysver}, ${lastrun})"
else
rc=0
fi
"${adb_uci}" -q commit "adblock"
rm -f "${adb_pidfile}"
exit ${rc}
}