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728 lines
22 KiB
728 lines
22 KiB
#!/bin/sh
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# function library used by adblock-update.sh
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# written by Dirk Brenken (dev@brenken.org)
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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_lanif="lan"
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adb_nullport="65534"
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adb_nullportssl="65535"
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adb_nullipv4="198.18.0.1"
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adb_nullipv6="::ffff:c612:0001"
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adb_whitelist="/etc/adblock/adblock.whitelist"
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adb_whitelist_rset="\$1 ~/^([A-Za-z0-9_-]+\.){1,}[A-Za-z]+/{print tolower(\"^\"\$1\"\\\|[.]\"\$1)}"
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adb_dnsdir="/tmp/dnsmasq.d"
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adb_dnshidedir="${adb_dnsdir}/.adb_hidden"
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adb_dnsprefix="adb_list"
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adb_count=0
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adb_minspace=12000
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adb_forcedns=1
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adb_fetchttl=5
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adb_restricted=0
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adb_fetch="$(which wget)"
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adb_uci="$(which uci)"
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unset adb_revsrclist
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# f_envload: load adblock environment
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#
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f_envload()
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{
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# source in system function library
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#
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if [ -r "/lib/functions.sh" ]
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then
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. "/lib/functions.sh"
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else
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rc=-10
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f_log "system function library not found, please check your installation"
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f_exit
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fi
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# source in system network library
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#
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if [ -r "/lib/functions/network.sh" ]
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then
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. "/lib/functions/network.sh"
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else
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rc=-10
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f_log "system network library not found, please check your installation"
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f_exit
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fi
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# check opkg availability
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#
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if [ -r "/var/lock/opkg.lock" ]
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then
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rc=-10
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f_log "adblock installation finished successfully, 'opkg' currently locked by package installer"
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f_exit
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fi
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# uci function to parse global 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}=\"${value}\""
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}
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else
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reset_cb
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fi
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}
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# uci function to parse 'service' and 'source' sections
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#
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parse_config()
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{
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local value opt section="${1}" options="enabled adb_dir adb_src adb_src_rset adb_src_cat"
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if [ "${section}" != "backup" ]
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then
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eval "adb_sources=\"${adb_sources} ${section}\""
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fi
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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}=\"${value}\""
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fi
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done
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}
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# load adblock config and start parsing functions
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#
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config_load adblock
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config_foreach parse_config service
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config_foreach parse_config source
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# get ip addresses & logical wan devices
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#
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network_get_ipaddr adb_ipv4 "${adb_lanif}"
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network_get_ipaddr6 adb_ipv6 "${adb_lanif}"
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network_find_wan adb_wanif4
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network_find_wan6 adb_wanif6
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# set restricted mode
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#
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if [ "${adb_restricted}" = "1" ]
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then
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adb_uci="$(which true)"
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restricted_ok="true"
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fi
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}
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# f_envcheck: check/set environment prerequisites
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#
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f_envcheck()
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{
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local check
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# check 'enabled' & 'version' config options
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#
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if [ -z "${adb_enabled}" ] || [ -z "${adb_cfgver}" ] || [ "${adb_cfgver%%.*}" != "${adb_mincfgver%%.*}" ]
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then
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rc=-1
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f_log "outdated adblock config (${adb_mincfgver} vs. ${adb_cfgver}), please run '/etc/init.d/adblock cfgup' to update your configuration"
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f_exit
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elif [ "${adb_cfgver#*.}" != "${adb_mincfgver#*.}" ]
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then
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outdate_ok="true"
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fi
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if [ "${adb_enabled}" != "1" ]
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then
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rc=-1
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f_log "adblock is currently disabled, please set adblock.global.adb_enabled=1' to use this service"
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f_exit
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fi
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# get list with all installed packages
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#
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pkg_list="$(opkg list-installed)"
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if [ -z "${pkg_list}" ]
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then
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rc=-1
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f_log "empty 'opkg' package list, please check your installation"
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f_exit
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fi
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adb_sysver="$(printf "${pkg_list}" | grep "^base-files -")"
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adb_sysver="${adb_sysver##*-}"
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# get lan ip addresses
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#
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if [ -z "${adb_ipv4}" ] && [ -z "${adb_ipv6}" ]
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then
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rc=-1
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f_log "no valid IPv4/IPv6 configuration found (${adb_lanif}), please set 'adb_lanif' manually"
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f_exit
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else
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network_get_device adb_landev4 "${adb_lanif}"
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network_get_device adb_landev6 "${adb_lanif}"
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fi
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# check logical update interfaces (with default route)
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#
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if [ -z "${adb_wanif4}" ] && [ -z "${adb_wanif6}" ]
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then
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adb_wanif4="${adb_lanif}"
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fi
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# check AP mode
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#
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if [ "${adb_wanif4}" = "${adb_lanif}" ] || [ "${adb_wanif6}" = "${adb_lanif}" ]
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then
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adb_nullipv4="${adb_ipv4}"
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adb_nullipv6="${adb_ipv6}"
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if [ "$(${adb_uci} -q get uhttpd.main.listen_http | grep -Fo "80")" = "80" ] ||
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[ "$(${adb_uci} -q get uhttpd.main.listen_https | grep -Fo "443")" = "443" ]
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then
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rc=-1
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f_log "AP mode detected, please set local LuCI instance to ports <> 80/443"
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f_exit
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elif [ -z "$(pgrep -f "dnsmasq")" ]
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then
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rc=-1
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f_log "please enable the local dnsmasq instance to use adblock"
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f_exit
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elif [ -z "$(iptables -w -vnL | grep -Fo "DROP")" ]
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then
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rc=-1
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f_log "please enable the local firewall to use adblock"
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f_exit
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else
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apmode_ok="true"
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fi
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else
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apmode_ok="false"
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check="$(${adb_uci} -q get bcp38.@bcp38[0].enabled)"
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if [ "${check}" = "1" ]
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then
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check="$(${adb_uci} -q get bcp38.@bcp38[0].match | grep -Fo "${adb_nullipv4%.*}")"
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if [ -n "${check}" ]
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then
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rc=-1
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f_log "please whitelist '${adb_nullipv4}' in your bcp38 configuration to use adblock"
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f_exit
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fi
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fi
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fi
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# start normal processing/logging
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#
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f_log "domain adblock processing started (${adb_scriptver}, ${adb_sysver}, $(/bin/date "+%d.%m.%Y %H:%M:%S"))"
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# log partially outdated config
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#
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if [ "${outdate_ok}" = "true" ]
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then
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f_log "partially outdated adblock config (${adb_mincfgver} vs. ${adb_cfgver}), please run '/etc/init.d/adblock cfgup' to update your configuration"
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fi
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# log ap mode
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#
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if [ "${apmode_ok}" = "true" ]
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then
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f_log "AP mode enabled"
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fi
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# log restricted mode
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#
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if [ "${restricted_ok}" = "true" ]
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then
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f_log "Restricted mode enabled"
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fi
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# check general package dependencies
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#
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f_depend "busybox"
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f_depend "uci"
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f_depend "uhttpd"
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f_depend "wget"
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f_depend "iptables"
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f_depend "kmod-ipt-nat"
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# check ipv6 related package dependencies
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#
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if [ -n "${adb_wanif6}" ]
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then
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check="$(printf "${pkg_list}" | grep "^ip6tables -")"
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if [ -z "${check}" ]
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then
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f_log "package 'ip6tables' not found, IPv6 support will be disabled"
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unset adb_wanif6
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else
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check="$(printf "${pkg_list}" | grep "^kmod-ipt-nat6 -")"
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if [ -z "${check}" ]
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then
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f_log "package 'kmod-ipt-nat6' not found, IPv6 support will be disabled"
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unset adb_wanif6
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fi
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fi
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fi
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# check dns hideout directory
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#
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if [ -d "${adb_dnshidedir}" ]
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then
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mv_done="$(find "${adb_dnshidedir}" -maxdepth 1 -type f -name "${adb_dnsprefix}*" -print -exec mv -f "{}" "${adb_dnsdir}" \;)"
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else
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mkdir -p -m 660 "${adb_dnshidedir}"
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fi
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# check ca-certificates package and set fetch parms accordingly
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#
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fetch_parm="--no-config --quiet --tries=1 --no-cache --no-cookies --max-redirect=0 --dns-timeout=${adb_fetchttl} --connect-timeout=${adb_fetchttl} --read-timeout=${adb_fetchttl}"
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check="$(printf "${pkg_list}" | grep "^ca-certificates -")"
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if [ -z "${check}" ]
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then
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fetch_parm="${fetch_parm} --no-check-certificate"
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fi
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# check adblock temp directory
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#
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adb_tmpfile="$(mktemp -tu)"
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adb_tmpdir="$(mktemp -p /tmp -d)"
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if [ -n "${adb_tmpdir}" ] && [ -d "${adb_tmpdir}" ]
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then
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f_space "${adb_tmpdir}"
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if [ "${space_ok}" = "false" ]
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then
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if [ $((av_space)) -le 2000 ]
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then
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rc=105
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f_log "not enough free space in '${adb_tmpdir}' (avail. ${av_space} kb)"
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f_exit
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else
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f_log "not enough free space to handle all block list sources at once in '${adb_tmpdir}' (avail. ${av_space} kb)"
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fi
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fi
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else
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rc=110
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f_log "temp directory not found"
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f_exit
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fi
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# check memory
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#
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mem_total="$(awk '$1 ~ /^MemTotal/ {printf $2}' "/proc/meminfo")"
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mem_free="$(awk '$1 ~ /^MemFree/ {printf $2}' "/proc/meminfo")"
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mem_swap="$(awk '$1 ~ /^SwapTotal/ {printf $2}' "/proc/meminfo")"
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if [ $((mem_total)) -le 64000 ] && [ $((mem_swap)) -eq 0 ]
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then
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mem_ok="false"
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f_log "not enough free memory, overall sort processing will be disabled (total: ${mem_total}, free: ${mem_free}, swap: ${mem_swap})"
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else
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mem_ok="true"
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fi
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# check backup configuration
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#
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if [ "${enabled_backup}" = "1" ] && [ -d "${adb_dir_backup}" ]
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then
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f_space "${adb_dir_backup}"
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if [ "${space_ok}" = "false" ]
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then
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f_log "not enough free space in '${adb_dir_backup}'(avail. ${av_space} kb), backup/restore will be disabled"
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backup_ok="false"
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else
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f_log "backup/restore will be enabled"
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backup_ok="true"
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fi
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else
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backup_ok="false"
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f_log "backup/restore will be disabled"
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fi
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# set dnsmasq defaults
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#
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if [ -n "${adb_wanif4}" ] && [ -n "${adb_wanif6}" ]
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then
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adb_dnsformat="awk -v ipv4="${adb_nullipv4}" -v ipv6="${adb_nullipv6}" '{print \"address=/\"\$0\"/\"ipv4\"\n\"\"address=/\"\$0\"/\"ipv6}'"
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elif [ -n "${adb_wanif4}" ]
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then
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adb_dnsformat="awk -v ipv4="${adb_nullipv4}" '{print \"address=/\"\$0\"/\"ipv4}'"
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else
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adb_dnsformat="awk -v ipv6="${adb_nullipv6}" '{print \"address=/\"\$0\"/\"ipv6}'"
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fi
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# check volatile iptables configuration
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#
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if [ -n "${adb_wanif4}" ]
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then
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check="$(iptables -w -t nat -vnL | grep -Fo "adb-")"
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if [ -z "${check}" ]
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then
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if [ "${adb_forcedns}" = "1" ] && [ -n "${adb_landev4}" ]
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then
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f_firewall "IPv4" "nat" "prerouting_rule" "prerouting_rule" "0" "dns" "-i ${adb_landev4} -p udp --dport 53 -j DNAT --to-destination ${adb_ipv4}:53"
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f_firewall "IPv4" "nat" "prerouting_rule" "prerouting_rule" "0" "dns" "-i ${adb_landev4} -p tcp --dport 53 -j DNAT --to-destination ${adb_ipv4}:53"
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fi
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f_firewall "IPv4" "nat" "prerouting_rule" "adb-nat" "1" "nat" "-p tcp --dport 80 -j DNAT --to-destination ${adb_ipv4}:${adb_nullport}"
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f_firewall "IPv4" "nat" "prerouting_rule" "adb-nat" "2" "nat" "-p tcp --dport 443 -j DNAT --to-destination ${adb_ipv4}:${adb_nullportssl}"
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if [ "${apmode_ok}" = "false" ]
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then
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f_firewall "IPv4" "filter" "forwarding_rule" "adb-fwd" "1" "fwd" "-p tcp -j REJECT --reject-with tcp-reset"
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f_firewall "IPv4" "filter" "forwarding_rule" "adb-fwd" "2" "fwd" "-j REJECT --reject-with icmp-host-unreachable"
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f_firewall "IPv4" "filter" "output_rule" "adb-out" "1" "out" "-p tcp -j REJECT --reject-with tcp-reset"
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f_firewall "IPv4" "filter" "output_rule" "adb-out" "2" "out" "-j REJECT --reject-with icmp-host-unreachable"
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fi
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fi
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fi
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if [ -n "${adb_wanif6}" ]
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then
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check="$(ip6tables -w -t nat -vnL | grep -Fo "adb-")"
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if [ -z "${check}" ]
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then
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if [ "${adb_forcedns}" = "1" ] && [ -n "${adb_landev6}" ]
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then
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f_firewall "IPv6" "nat" "PREROUTING" "PREROUTING" "0" "dns" "-i ${adb_landev6} -p udp --dport 53 -j DNAT --to-destination [${adb_ipv6}]:53"
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f_firewall "IPv6" "nat" "PREROUTING" "PREROUTING" "0" "dns" "-i ${adb_landev6} -p tcp --dport 53 -j DNAT --to-destination [${adb_ipv6}]:53"
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fi
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f_firewall "IPv6" "nat" "PREROUTING" "adb-nat" "1" "nat" "-p tcp --dport 80 -j DNAT --to-destination [${adb_ipv6}]:${adb_nullport}"
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f_firewall "IPv6" "nat" "PREROUTING" "adb-nat" "2" "nat" "-p tcp --dport 443 -j DNAT --to-destination [${adb_ipv6}]:${adb_nullportssl}"
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if [ "${apmode_ok}" = "false" ]
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then
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f_firewall "IPv6" "filter" "forwarding_rule" "adb-fwd" "1" "fwd" "-p tcp -j REJECT --reject-with tcp-reset"
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f_firewall "IPv6" "filter" "forwarding_rule" "adb-fwd" "2" "fwd" "-j REJECT --reject-with icmp6-addr-unreachable"
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f_firewall "IPv6" "filter" "output_rule" "adb-out" "1" "out" "-p tcp -j REJECT --reject-with tcp-reset"
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f_firewall "IPv6" "filter" "output_rule" "adb-out" "2" "out" "-j REJECT --reject-with icmp6-addr-unreachable"
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fi
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fi
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fi
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if [ "${fw_done}" = "true" ]
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then
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f_log "created volatile firewall rulesets"
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fw_done="false"
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fi
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# check volatile uhttpd instance configuration
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#
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check="$(pgrep -f "uhttpd -h /www/adblock")"
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if [ -z "${check}" ]
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then
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if [ -n "${adb_wanif4}" ] && [ -n "${adb_wanif6}" ]
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then
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f_uhttpd "adbIPv4+6_80" "1" "-p ${adb_ipv4}:${adb_nullport} -p [${adb_ipv6}]:${adb_nullport}"
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f_uhttpd "adbIPv4+6_443" "0" "-p ${adb_ipv4}:${adb_nullportssl} -p [${adb_ipv6}]:${adb_nullportssl}"
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elif [ -n "${adb_wanif4}" ]
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then
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f_uhttpd "adbIPv4_80" "1" "-p ${adb_ipv4}:${adb_nullport}"
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f_uhttpd "adbIPv4_443" "0" "-p ${adb_ipv4}:${adb_nullportssl}"
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else
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f_uhttpd "adbIPv6_80" "1" "-p [${adb_ipv6}]:${adb_nullport}"
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f_uhttpd "adbIPv6_443" "0" "-p [${adb_ipv6}]:${adb_nullportssl}"
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fi
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if [ "${uhttpd_done}" = "true" ]
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then
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f_log "created volatile uhttpd instances"
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uhttpd_done="false"
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fi
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fi
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# check whitelist entries
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#
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if [ -s "${adb_whitelist}" ]
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then
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awk "${adb_whitelist_rset}" "${adb_whitelist}" > "${adb_tmpdir}/tmp.whitelist"
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fi
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# remove temporary package list
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#
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unset pkg_list
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}
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# f_depend: check package dependencies
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#
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f_depend()
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{
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local check
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local package="${1}"
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check="$(printf "${pkg_list}" | grep "^${package} -")"
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if [ -z "${check}" ]
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then
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rc=115
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f_log "package '${package}' not found"
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f_exit
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fi
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}
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|
|
# f_firewall: set iptables rules for ipv4/ipv6
|
|
#
|
|
f_firewall()
|
|
{
|
|
local ipt="iptables"
|
|
local nullip="${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
|
|
"${ipt}" -w -t "${table}" -A "${chsrc}" -d "${nullip}" -m comment --comment "${notes}" -j "${chain}"
|
|
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
|
|
if [ $((chpos)) -eq 0 ]
|
|
then
|
|
"${ipt}" -w -t "${table}" -A "${chain}" -m comment --comment "${notes}" ${rules}
|
|
else
|
|
"${ipt}" -w -t "${table}" -I "${chain}" "${chpos}" -m comment --comment "${notes}" ${rules}
|
|
fi
|
|
rc=${?}
|
|
if [ $((rc)) -eq 0 ]
|
|
then
|
|
fw_done="true"
|
|
else
|
|
f_log "failed to initialize volatile ${proto} firewall rule '${notes}'"
|
|
f_exit
|
|
fi
|
|
fi
|
|
}
|
|
|
|
# f_uhttpd: start uhttpd instances
|
|
#
|
|
f_uhttpd()
|
|
{
|
|
local realm="${1}"
|
|
local timeout="${2}"
|
|
local ports="${3}"
|
|
uhttpd -h "/www/adblock" -N 25 -T "${timeout}" -r "${realm}" -k 0 -t 0 -R -D -S -E "/index.html" ${ports}
|
|
rc=${?}
|
|
if [ $((rc)) -eq 0 ]
|
|
then
|
|
uhttpd_done="true"
|
|
else
|
|
f_log "failed to initialize volatile uhttpd instance (${realm})"
|
|
f_exit
|
|
fi
|
|
}
|
|
|
|
# f_space: check mount points/space requirements
|
|
#
|
|
f_space()
|
|
{
|
|
local mp="${1}"
|
|
|
|
if [ -d "${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}"
|
|
|
|
rm_cfg="${adb_lastrun}"
|
|
if [ -n "${rm_cfg}" ]
|
|
then
|
|
"${adb_uci}" -q delete "adblock.global.adb_overall_count"
|
|
"${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
|
|
fi
|
|
}
|
|
|
|
# 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 "
|
|
local lastrun="$(date "+%d.%m.%Y %H:%M:%S")"
|
|
|
|
# check for terminal session
|
|
#
|
|
if [ -t 1 ]
|
|
then
|
|
log_parm="-s"
|
|
fi
|
|
|
|
# log to different output devices and set log class accordingly
|
|
#
|
|
if [ -n "${log_msg}" ]
|
|
then
|
|
if [ $((rc)) -gt 0 ]
|
|
then
|
|
class="error"
|
|
fi
|
|
logger ${log_parm} -t "adblock[${adb_pid}] ${class}" "${log_msg}" 2>&1
|
|
|
|
# clean exit on error
|
|
#
|
|
if [ $((rc)) -eq -1 ] || [ $((rc)) -gt 0 ]
|
|
then
|
|
f_rmdns
|
|
f_rmuhttpd
|
|
f_rmfirewall
|
|
config_foreach f_rmconfig source
|
|
"${adb_uci}" -q set "adblock.global.adb_lastrun=${lastrun} => runtime error, please check the log!"
|
|
"${adb_uci}" -q commit "adblock"
|
|
fi
|
|
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 -vnL adb-nat | awk '$3 ~ /^DNAT$/ {sum += $1} END {printf sum}')"
|
|
ipv4_all="$(iptables -t nat -vnL PREROUTING | awk '$3 ~ /^prerouting_rule$/ {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",$1/all*100)}')"
|
|
fi
|
|
fi
|
|
if [ -n "${adb_wanif6}" ]
|
|
then
|
|
ipv6_blk="$(ip6tables -t nat -vnL adb-nat | awk '$3 ~ /^DNAT$/ {sum += $1} END {printf sum}')"
|
|
ipv6_all="$(ip6tables -t nat -vnL 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",$1/all*100)}')"
|
|
fi
|
|
fi
|
|
"${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="$(date "+%d.%m.%Y %H:%M:%S")"
|
|
|
|
rm -f "${adb_tmpfile}"
|
|
rm -rf "${adb_tmpdir}"
|
|
|
|
# final log message and iptables statistics
|
|
#
|
|
if [ $((rc)) -eq 0 ]
|
|
then
|
|
f_statistics
|
|
"${adb_uci}" -q set "adblock.global.adb_lastrun=${lastrun}"
|
|
"${adb_uci}" -q commit "adblock"
|
|
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}, ${lastrun})"
|
|
else
|
|
rc=0
|
|
fi
|
|
rm -f "${adb_pidfile}"
|
|
exit ${rc}
|
|
}
|