adblock: 0.90.0

* all relevant adblock events will be properly written to syslog/stdout
* removed needless 'debug log' option
* add optional parm 'adb_forcedns' to redirect all queries to local
resolver (default: '1', enabled)
* revised space check
* various code cosmetics & cleanups

Signed-off-by: Dirk Brenken <openwrt@brenken.org>

net/adblock/Makefile

@@ -7,7 +7,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=adblock
-PKG_VERSION:=0.80.1
+PKG_VERSION:=0.90.0
 PKG_RELEASE:=1
 PKG_LICENSE:=GPL-3.0+
 PKG_MAINTAINER:=Dirk Brenken <openwrt@brenken.org>
@@ -25,7 +25,7 @@ endef
 define Package/$(PKG_NAME)/description
 Powerful adblock script to block ad/abuse domains.
 Currently the script supports 15 domain blacklist sites plus manual black- and whitelist overrides.
-Please see README.md in /etc/adblock for further information.
+Please see https://github.com/openwrt/packages/blob/master/net/adblock/files/README.md for further information.
 
 endef
 
@@ -62,7 +62,6 @@ define Package/$(PKG_NAME)/install
 	$(INSTALL_CONF) ./files/adblock.conf $(1)/etc/adblock/adblock.conf.default
 	$(INSTALL_CONF) ./files/adblock.blacklist $(1)/etc/adblock/
 	$(INSTALL_CONF) ./files/adblock.whitelist $(1)/etc/adblock/
-	$(INSTALL_CONF) ./files/README.md $(1)/etc/adblock/
 
 	$(INSTALL_DIR) $(1)/www/adblock
 	$(INSTALL_DATA) ./files/www/adblock/* $(1)/www/adblock/

net/adblock/files/README.md

@@ -46,15 +46,13 @@ When the dns server on your router receives dns requests, you will sort out quer
 * adblock source list parsing by fast & flexible regex rulesets
 * additional white- and blacklist support for manual overrides
 * quality checks during & after update of adblock lists to ensure a reliable dnsmasq service
-* wan update check, to wait for an active wan uplink before update
 * basic adblock statistics via iptables packet counters for each chain
 * status & error logging to stdout and syslog
 * use of dynamic uhttpd instance as adblock pixel server
+* use of dynamic iptables ruleset for adblock related redirects/rejects
 * openwrt init system support (start/stop/restart/reload)
 * hotplug support, adblock start will be triggered by wan 'ifup' event
-* optional features (disabled by default):
-    * adblock list backup/restore
-    * debug logging to separate file
+* optional: adblock list backup/restore (disabled by default)
 
 ## Prerequisites
 * [openwrt](https://openwrt.org), tested with latest stable release (Chaos Calmer 15.05) and with current trunk (Designated Driver > r47025)
@@ -81,28 +79,29 @@ Thanks to Hannu Nyman for this great adblock LuCI frontend!
 
 ## Tweaks
 * there is no need to enable all blacklist sites at once, for normal use one to three adblock list sources should be sufficient
-* if you really need to handle all blacklists at once add an usb stick or any other storage device to supersize your temp directory with a swap partition => see [openwrt wiki](https://wiki.openwrt.org/doc/uci/fstab) for further details
-* add static, personal domain white- or blacklist entries, one domain per line (wildcards & regex are not allowed!), by default both lists are located in */etc/adblock*
-* enable the backup/restore feature, to restore automatically the latest, stable backup of your adblock lists in case of any processing error
-* enable the logging feature for continuous logfile writing to monitor the adblock runs over a longer period
+* if you really need to handle all blacklists at once add an usb stick or any other storage device to enlarge your temp directory with a swap partition => see [openwrt wiki](https://wiki.openwrt.org/doc/uci/fstab) for further details
+* add personal domain white- or blacklist entries as an additional blocklist source, one domain per line (wildcards & regex are not allowed!), by default both empty lists are located in */etc/adblock*
+* enable the backup/restore feature, to restore automatically the latest stable backup of your adblock lists in case of any (partial) processing error (i.e. a single blocklist source server is down). Please use an (external) solid partition and *not* your volatile router temp directory for this
 * for a scheduled call of the adblock service via */etc/init.d/adblock start* add an appropriate crontab entry
 
 ## Further adblock config options
 * usually the adblock autodetection works quite well and no manual config overrides are needed, all options apply to 'global' adblock config section:
-    * adb\_enabled => main switch to enable/disable adblock service (default: '1' (enabled))
+    * adb\_enabled => main switch to enable/disable adblock service (default: '1', enabled)
     * adb\_cfgver => config version string (do not change!) - adblock checks this entry and automatically applies the current config, if none or an older revision was found.
     * adb\_wanif => name of the logical wan interface (default: 'wan')
     * adb\_lanif => name of the logical lan interface (default: 'lan')
     * adb\_port => port of the adblock uhttpd instance (default: '65535')
     * adb\_nullipv4 => IPv4 blackhole ip address (default: '192.0.2.1')
     * adb\_nullipv6 => IPv6 blackhole ip address (default: '::ffff:c000:0201')
+    * adb\_forcedns => redirect all DNS queries to local dnsmasq resolver (default: '1', enabled)
 
 ## Background
 This adblock package is a dns/dnsmasq based adblock solution for openwrt.  
 Queries to ad/abuse domains are never forwarded and always replied with a local IP address which may be IPv4 or IPv6.  
 For that purpose adblock uses an ip address from the private 'TEST-NET-1' subnet (192.0.2.1 / ::ffff:c000:0201) by default.  
 Furthermore all ad/abuse queries will be filtered by ip(6)tables and redirected to internal adblock pixel server (in PREROUTING chain) or rejected (in FORWARD or OUTPUT chain).  
-All iptables and uhttpd related adblock additions are non-destructive, no hard-coded changes in 'firewall.user', 'uhttpd' config or any other openwrt related config files. There is *no* adblock background daemon running, the (scheduled) start of the adblock service keeps only the adblock lists up-to-date.
+All iptables and uhttpd related adblock additions are non-destructive, no hard-coded changes in 'firewall.user', 'uhttpd' config or any other openwrt related config files.  
+There is *no* adblock background daemon running, the (scheduled) start of the adblock service keeps only the adblock lists up-to-date.
 
 ## Support
 Please join the adblock discussion in this [openwrt forum thread](https://forum.openwrt.org/viewtopic.php?id=59803) or contact me by mail <openwrt@brenken.org>

net/adblock/files/adblock-helper.sh

@@ -1,8 +1,6 @@
 #!/bin/sh
-#################################################
-# function library used by adblock-update.sh    #
-# written by Dirk Brenken (openwrt@brenken.org) #
-#################################################
+# function library used by adblock-update.sh
+# written by Dirk Brenken (openwrt@brenken.org)
 
 #####################################
 # f_envload: load adblock environment
@@ -88,6 +86,7 @@ f_envparse()
     adb_nullipv6="::ffff:c000:0201"
     adb_blacklist="/etc/adblock/adblock.blacklist"
     adb_whitelist="/etc/adblock/adblock.whitelist"
+    adb_forcedns=1
 
     # function to read global options by callback
     #
@@ -110,7 +109,7 @@ f_envparse()
 
     # function to iterate through config list, read only options in "enabled" sections
     #
-    adb_cfglist="adb_backupdir adb_logfile adb_src"
+    adb_cfglist="adb_backupdir adb_src"
     unset adb_sources
     parse_config()
     {
@@ -153,9 +152,8 @@ f_envparse()
 
     # set more script defaults (can't be overwritten by adblock config options)
     #
-    adb_cnt=0
-    adb_minspace=20000
-    adb_unique=1
+    adb_count=0
+    adb_minspace=12000
     adb_tmpfile="$(mktemp -tu 2>/dev/null)"
     adb_tmpdir="$(mktemp -p /tmp -d 2>/dev/null)"
     adb_dnsdir="/tmp/dnsmasq.d"
@@ -167,9 +165,7 @@ f_envparse()
     adb_fwdchain_ipv6="forwarding_rule"
     adb_outchain_ipv6="output_rule"
     adb_fetch="/usr/bin/wget"
-    unset adb_srclist
-    unset adb_revsrclist
-    unset adb_errsrclist
+    unset adb_srclist adb_revsrclist adb_errsrclist
 
     # set adblock source ruleset definitions
     #
@@ -245,13 +241,13 @@ f_envcheck()
         check="$(printf "${pkg_list}" | grep "^ip6tables -" 2>/dev/null)"
         if [ -z "${check}" ]
         then
-            f_log "package 'ip6tables' not found, IPv6 support wíll be disabled"
+            f_log "package 'ip6tables' not found, IPv6 support will be disabled"
             unset adb_wanif6
         else
             check="$(printf "${pkg_list}" | grep "^kmod-ipt-nat6 -" 2>/dev/null)"
             if [ -z "${check}" ]
             then
-                f_log "package 'kmod-ipt-nat6' not found, IPv6 support wíll be disabled"
+                f_log "package 'kmod-ipt-nat6' not found, IPv6 support will be disabled"
                 unset adb_wanif6
             fi
         fi
@@ -270,14 +266,11 @@ f_envcheck()
     #
     if [ ! -r "${adb_blacklist}" ]
     then
-        rc=135
-        f_log "adblock blacklist not found (${adb_blacklist})" "${rc}"
-        f_exit
-    elif [ ! -r "${adb_whitelist}" ]
+        f_log "adblock blacklist not found, source will be disabled"
+    fi
+    if [ ! -r "${adb_whitelist}" ]
     then
-        rc=135
-        f_log "adblock whitelist not found (${adb_whitelist})" "${rc}"
-        f_exit
+        f_log "adblock whitelist not found, source will be disabled"
     fi
 
     # check adblock temp directory
@@ -287,25 +280,30 @@ f_envcheck()
         f_space "${adb_tmpdir}"
         if [ "${space_ok}" = "false" ]
         then
-            rc=140
-            f_log "not enough space in '${adb_tmpdir}', please supersize your temp directory" "${rc}"
-            f_exit
+            if [ $((av_space)) -le 2000 ]
+            then
+                rc=135
+                f_log "not enough free space in '${adb_tmpdir}' (avail. ${av_space} kb)" "${rc}"
+                f_exit
+            else
+                f_log "not enough free space to handle all adblock list sources at once in '${adb_tmpdir}' (avail. ${av_space} kb)"
+            fi
         fi
     else
-        rc=140
+        rc=135
         f_log "temp directory not found" "${rc}"
         f_exit
     fi
 
     # memory check
     #
-    mem_total="$(awk '$1 ~ /^MemTotal/ {print $2}' "/proc/meminfo" 2>/dev/null)"
-    mem_free="$(awk '$1 ~ /^MemFree/ {print $2}' "/proc/meminfo" 2>/dev/null)"
-    mem_swap="$(awk '$1 ~ /^SwapTotal/ {print $2}' "/proc/meminfo" 2>/dev/null)"
+    mem_total="$(awk '$1 ~ /^MemTotal/ {printf $2}' "/proc/meminfo" 2>/dev/null)"
+    mem_free="$(awk '$1 ~ /^MemFree/ {printf $2}' "/proc/meminfo" 2>/dev/null)"
+    mem_swap="$(awk '$1 ~ /^SwapTotal/ {printf $2}' "/proc/meminfo" 2>/dev/null)"
     if [ $((mem_total)) -le 64000 ] && [ $((mem_swap)) -eq 0 ]
     then
-        adb_unique=0
-        f_log "not enough memory, overall sort processing will be disabled (total: ${mem_total}, free: ${mem_free}, swap: ${mem_swap})"
+        mem_ok="false"
+        f_log "not enough free memory, overall sort processing will be disabled (total: ${mem_total}, free: ${mem_free}, swap: ${mem_swap})"
     fi
 
     # check backup configuration
@@ -315,7 +313,7 @@ f_envcheck()
         f_space "${adb_backupdir}"
         if [ "${space_ok}" = "false" ]
         then
-            f_log "not enough space in '${adb_backupdir}', backup/restore will be disabled"
+            f_log "not enough free space in '${adb_backupdir}'(avail. ${av_space} kb), backup/restore will be disabled"
             backup_ok="false"
         else
             f_log "backup/restore will be enabled"
@@ -326,34 +324,18 @@ f_envcheck()
         f_log "backup/restore will be disabled"
     fi
 
-    # check log configuration
-    #
-    adb_logdir="${adb_logfile%/*}"
-    if [ -n "${adb_logdir}" ] && [ -d "${adb_logdir}" ]
-    then
-        f_space "${adb_logdir}"
-        if [ "${space_ok}" = "false" ]
-        then
-            f_log "not enough space in '${adb_logdir}', logging will be disabled"
-            log_ok="false"
-        else
-            f_log "logging will be enabled"
-            log_ok="true"
-        fi
-    else
-        log_ok="false"
-        f_log "logging will be disabled"
-    fi
-
     # check ipv4/iptables configuration
     #
     if [ -n "${adb_wanif4}" ] && [ -n "${adb_wandev4}" ]
     then
         f_firewall "IPv4" "nat" "A" "${adb_prechain_ipv4}" "adb-prerouting" "! -i ${adb_wandev4} -p tcp -d ${adb_nullipv4} -m multiport --dports 80,443 -j REDIRECT --to-ports ${adb_port}"
-        f_firewall "IPv4" "nat" "A" "${adb_prechain_ipv4}" "adb-dns" "! -i ${adb_wandev4} -p udp --dport 53 -j REDIRECT"
-        f_firewall "IPv4" "nat" "A" "${adb_prechain_ipv4}" "adb-dns" "! -i ${adb_wandev4} -p tcp --dport 53 -j REDIRECT"
         f_firewall "IPv4" "filter" "A" "${adb_fwdchain_ipv4}" "adb-forward" "! -i ${adb_wandev4} -d ${adb_nullipv4} -j REJECT --reject-with icmp-host-unreachable"
         f_firewall "IPv4" "filter" "A" "${adb_outchain_ipv4}" "adb-output" "! -i ${adb_wandev4} -d ${adb_nullipv4} -j REJECT --reject-with icmp-host-unreachable"
+        if [ $((adb_forcedns)) -eq 1 ]
+        then
+            f_firewall "IPv4" "nat" "A" "${adb_prechain_ipv4}" "adb-dns" "! -i ${adb_wandev4} -p udp --dport 53 -j REDIRECT"
+            f_firewall "IPv4" "nat" "A" "${adb_prechain_ipv4}" "adb-dns" "! -i ${adb_wandev4} -p tcp --dport 53 -j REDIRECT"
+        fi
         if [ "${fw_done}" = "true" ]
         then
             f_log "created volatile IPv4 firewall ruleset"
@@ -366,10 +348,13 @@ f_envcheck()
     if [ -n "${adb_wanif6}" ] && [ -n "${adb_wandev6}" ]
     then
         f_firewall "IPv6" "nat" "A" "${adb_prechain_ipv6}" "adb-prerouting" "! -i ${adb_wandev6} -p tcp -d ${adb_nullipv6} -m multiport --dports 80,443 -j REDIRECT --to-ports ${adb_port}"
-        f_firewall "IPv6" "nat" "A" "${adb_prechain_ipv6}" "adb-dns" "! -i ${adb_wandev6} -p udp --dport 53 -j REDIRECT"
-        f_firewall "IPv6" "nat" "A" "${adb_prechain_ipv6}" "adb-dns" "! -i ${adb_wandev6} -p tcp --dport 53 -j REDIRECT"
         f_firewall "IPv6" "filter" "A" "${adb_fwdchain_ipv6}" "adb-forward" "! -i ${adb_wandev6} -d ${adb_nullipv6} -j REJECT --reject-with icmp6-addr-unreachable"
         f_firewall "IPv6" "filter" "A" "${adb_outchain_ipv6}" "adb-output" "! -i ${adb_wandev6} -d ${adb_nullipv6} -j REJECT --reject-with icmp6-addr-unreachable"
+        if [ $((adb_forcedns)) -eq 1 ]
+        then
+            f_firewall "IPv6" "nat" "A" "${adb_prechain_ipv6}" "adb-dns" "! -i ${adb_wandev6} -p udp --dport 53 -j REDIRECT"
+            f_firewall "IPv6" "nat" "A" "${adb_prechain_ipv6}" "adb-dns" "! -i ${adb_wandev6} -p tcp --dport 53 -j REDIRECT"
+        fi
         if [ "${fw_done}" = "true" ]
         then
             f_log "created volatile IPv6 firewall ruleset"
@@ -384,37 +369,23 @@ f_envcheck()
     then
         if [ -n "${adb_wanif4}" ] && [ -n "${adb_wanif6}" ]
         then
-            uhttpd -h "/www/adblock" -k 5 -N 200 -t 0 -T 1 -D -S -E "/adblock.html" -p "${adb_ipv4}:${adb_port}" -p "[${adb_ipv6}]:${adb_port}">/dev/null 2>&1
+            uhttpd -h "/www/adblock" -k 5 -N 200 -t 0 -T 1 -D -S -E "/index.html" -p "${adb_ipv4}:${adb_port}" -p "[${adb_ipv6}]:${adb_port}">/dev/null 2>&1
             rc=${?}
-            if [ $((rc)) -eq 0 ]
-            then
-                f_log "created volatile uhttpd instance (${adb_ipv4}:${adb_port}, [${adb_ipv6}]:${adb_port})"
-            else
-                f_log "failed to initialize volatile uhttpd instance (${adb_ipv4}:${adb_port}, [${adb_ipv6}]:${adb_port})" "${rc}"
-                f_restore
-            fi
         elif [ -n "${adb_wanif4}" ]
         then
-            uhttpd -h "/www/adblock" -k 5 -N 200 -t 0 -T 1 -D -S -E "/adblock.html" -p "${adb_ipv4}:${adb_port}" >/dev/null 2>&1
+            uhttpd -h "/www/adblock" -k 5 -N 200 -t 0 -T 1 -D -S -E "/index.html" -p "${adb_ipv4}:${adb_port}" >/dev/null 2>&1
             rc=${?}
-            if [ $((rc)) -eq 0 ]
-            then
-                f_log "created volatile uhttpd instance (${adb_ipv4}:${adb_port})"
-            else
-                f_log "failed to initialize volatile uhttpd instance (${adb_ipv4}:${adb_port})" "${rc}"
-                f_restore
-            fi
         elif [ -n "${adb_wanif6}" ]
         then
-            uhttpd -h "/www/adblock" -k 5 -N 200 -t 0 -T 1 -D -S -E "/adblock.html" -p "[${adb_ipv6}]:${adb_port}" >/dev/null 2>&1
+            uhttpd -h "/www/adblock" -k 5 -N 200 -t 0 -T 1 -D -S -E "/index.html" -p "[${adb_ipv6}]:${adb_port}" >/dev/null 2>&1
             rc=${?}
-            if [ $((rc)) -eq 0 ]
-            then
-                f_log "created volatile uhttpd instance ([${adb_ipv6}]:${adb_port})"
-            else
-                f_log "failed to initialize volatile uhttpd instance ([${adb_ipv6}]:${adb_port})" "${rc}"
-                f_restore
-            fi
+        fi
+        if [ $((rc)) -eq 0 ]
+        then
+            f_log "created volatile uhttpd instance"
+        else
+            f_log "failed to initialize volatile uhttpd instance" "${rc}"
+            f_restore
         fi
     fi
 
@@ -447,7 +418,7 @@ f_depend()
     check="$(printf "${pkg_list}" | grep "^${package} -" 2>/dev/null)"
     if [ -z "${check}" ]
     then
-        rc=150
+        rc=140
         f_log "package '${package}' not found" "${rc}"
         f_exit
     fi
@@ -494,8 +465,8 @@ f_firewall()
     fi
 }
 
-###################################################
-# f_log: log messages to stdout, syslog and logfile
+##########################################
+# f_log: log messages to stdout and syslog
 #
 f_log()
 {
@@ -511,7 +482,7 @@ f_log()
         log_parm="-s"
     fi
 
-    # log to different output devices, set log class accordingly
+    # log to different output devices and set log class accordingly
     #
     if [ -n "${log_msg}" ]
     then
@@ -522,10 +493,6 @@ f_log()
             log_msg="${log_msg}${log_rc}"
         fi
         /usr/bin/logger ${log_parm} -t "adblock[${adb_pid}] ${class}" "${log_msg}"
-        if [ "${log_ok}" = "true" ]
-        then
-            printf "%s\n" "$(/bin/date "+%d.%m.%Y %H:%M:%S") adblock[${adb_pid}] ${class}: ${log_msg}" >> "${adb_logfile}"
-        fi
     fi
 }
 
@@ -540,7 +507,7 @@ f_space()
     #
     if [ -d "${mp}" ]
     then
-        av_space="$(df "${mp}" 2>/dev/null | tail -n1 2>/dev/null | awk '{print $4}')"
+        av_space="$(df "${mp}" 2>/dev/null | tail -n1 2>/dev/null | awk '{printf $4}')"
         if [ $((av_space)) -lt $((adb_minspace)) ]
         then
             space_ok="false"
@@ -595,20 +562,19 @@ f_restore()
     if [ -n "${restore_done}" ] || [ -n "${rm_done}" ]
     then
         /etc/init.d/dnsmasq restart >/dev/null 2>&1
-        sleep 2
+        sleep 1
         dns_status="$(ps 2>/dev/null | grep "[d]nsmasq" 2>/dev/null)"
         if [ -n "${dns_status}" ]
         then
             rc=0
+            adb_count="$(head -qn -3 "${adb_dnsdir}/${adb_dnsprefix}."* 2>/dev/null | wc -l)"
             if [ -n "${adb_wanif4}" ] && [ -n "${adb_wanif6}" ]
             then
-                adb_count="$(($(head -qn -4 "${adb_dnsdir}/${adb_dnsprefix}."* 2>/dev/null | wc -l) / 2))"
-            else
-                adb_count="$(head -qn -4 "${adb_dnsdir}/${adb_dnsprefix}."* 2>/dev/null | wc -l)"
+                adb_count="$((adb_count / 2))"
             fi
             f_log "adblock lists with overall ${adb_count} domains loaded"
         else
-            rc=160
+            rc=145
             f_log "dnsmasq restart failed, please check 'logread' output" "${rc}"
         fi
     fi
@@ -621,12 +587,12 @@ f_restore()
 #
 f_exit()
 {
-    local ipv4_prerouting
-    local ipv4_forward
-    local ipv4_output
-    local ipv6_prerouting
-    local ipv6_forward
-    local ipv6_output
+    local ipv4_prerouting=0
+    local ipv4_forward=0
+    local ipv4_output=0
+    local ipv6_prerouting=0
+    local ipv6_forward=0
+    local ipv6_output=0
     local iptv4="/usr/sbin/iptables"
     local iptv6="/usr/sbin/ip6tables"
 
@@ -647,34 +613,20 @@ f_exit()
     then
         if [ -n "${adb_wanif4}" ]
         then
-            ipv4_prerouting="$(${iptv4} -t nat -vnL | awk '$11 ~ /^adb-prerouting$/ {sum += $1} END {print sum}')"
-            ipv4_forward="$(${iptv4} -vnL | awk '$11 ~ /^adb-forward$/ {sum += $1} END {print sum}')"
-            ipv4_output="$(${iptv4} -vnL | awk '$11 ~ /^adb-output$/ {sum += $1} END {print sum}')"
+            ipv4_prerouting="$(${iptv4} -t nat -vnL | awk '$11 ~ /^adb-prerouting$/ {sum += $1} END {printf sum}')"
+            ipv4_forward="$(${iptv4} -vnL | awk '$11 ~ /^adb-forward$/ {sum += $1} END {printf sum}')"
+            ipv4_output="$(${iptv4} -vnL | awk '$11 ~ /^adb-output$/ {sum += $1} END {printf sum}')"
         fi
         if [ -n "${adb_wanif6}" ]
         then
-            ipv6_prerouting="$(${iptv6} -t nat -vnL | awk '$10 ~ /^adb-prerouting$/ {sum += $1} END {print sum}')"
-            ipv6_forward="$(${iptv6} -vnL | awk '$10 ~ /^adb-forward$/ {sum += $1} END {print sum}')"
-            ipv6_output="$(${iptv6} -vnL | awk '$10 ~ /^adb-output$/ {sum += $1} END {print sum}')"
-        fi
-        if [ -n "${adb_wanif4}" ] && [ -n "${adb_wanif6}" ]
-        then
-            f_log "adblock firewall statistics (IPv4/IPv6):"
-            f_log "${ipv4_prerouting}/${ipv6_prerouting} packets redirected in PREROUTING chain"
-            f_log "${ipv4_forward}/${ipv6_forward} packets rejected in FORWARD chain"
-            f_log "${ipv4_output}/${ipv6_output} packets rejected in OUTPUT chain"
-        elif [ -n "${adb_wanif4}" ]
-        then
-            f_log "adblock firewall statistics (IPv4):"
-            f_log "${ipv4_prerouting} packets redirected in PREROUTING chain"
-            f_log "${ipv4_forward} packets rejected in FORWARD chain"
-            f_log "${ipv4_output} packets rejected in OUTPUT chain"
-        elif [ -n "${adb_wanif6}" ]
-        then
-            f_log "${ipv6_prerouting} packets redirected in PREROUTING chain"
-            f_log "${ipv6_forward} packets rejected in FORWARD chain"
-            f_log "${ipv6_output} packets rejected in OUTPUT chain"
+            ipv6_prerouting="$(${iptv6} -t nat -vnL | awk '$10 ~ /^adb-prerouting$/ {sum += $1} END {printf sum}')"
+            ipv6_forward="$(${iptv6} -vnL | awk '$10 ~ /^adb-forward$/ {sum += $1} END {printf sum}')"
+            ipv6_output="$(${iptv6} -vnL | awk '$10 ~ /^adb-output$/ {sum += $1} END {printf sum}')"
         fi
+        f_log "adblock firewall statistics (IPv4/IPv6):"
+        f_log "${ipv4_prerouting}/${ipv6_prerouting} packets redirected in PREROUTING chain"
+        f_log "${ipv4_forward}/${ipv6_forward} packets rejected in FORWARD chain"
+        f_log "${ipv4_output}/${ipv6_output} packets rejected in OUTPUT chain"
         f_log "domain adblock processing finished successfully (${adb_scriptver}, ${openwrt_version}, $(/bin/date "+%d.%m.%Y %H:%M:%S"))"
     elif [ $((rc)) -gt 0 ]
     then

net/adblock/files/adblock-update.sh

@@ -1,30 +1,12 @@
 #!/bin/sh
-#######################################################
-# ad/abuse domain blocking script for dnsmasq/openwrt #
-# written by Dirk Brenken (openwrt@brenken.org)       #
-#######################################################
-
-# LICENSE
-# ========
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
+# ad/abuse domain blocking script for dnsmasq/openwrt
+# written by Dirk Brenken (openwrt@brenken.org)
+
+# This is free software, licensed under the GNU General Public License v3.
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 
-###############
-# environment #
-###############
-
-# set the C locale, characters are single bytes, the charset is ASCII
-# speeds up things like sort, grep etc.
+# set the C locale
 #
 LC_ALL=C
 
@@ -45,7 +27,7 @@ fi
 # get current directory, script- and openwrt version
 #
 adb_scriptdir="${0%/*}"
-adb_scriptver="0.80.1"
+adb_scriptver="0.90.0"
 openwrt_version="$(cat /etc/openwrt_version 2>/dev/null)"
 
 # source in adblock function library
@@ -59,13 +41,9 @@ else
     exit ${rc}
 fi
 
-################
-# main program #
-################
-
 # call trap function on error signals (HUP, INT, QUIT, BUS, SEGV, TERM)
 #
-trap "rc=253; f_log 'error signal received/trapped' '${rc}'; f_exit" 1 2 3 10 11 15
+trap "rc=250; f_log 'error signal received/trapped' '${rc}'; f_exit" 1 2 3 10 11 15
 
 # load environment
 #
@@ -93,15 +71,13 @@ then
     shalla_file="${adb_tmpdir}/shallalist.txt"
     src_name="shalla"
     adb_dnsfile="${adb_dnsdir}/${adb_dnsprefix}.${src_name}"
-    list_time="$(grep -F "# last modified: " "${adb_dnsfile}" 2>/dev/null)"
-    list_time="${list_time/*: /}"
+    list_time="$(awk '$0 ~ /^# last modified/ {printf substr($0,18)}' "${adb_dnsfile}" 2>/dev/null)"
     f_log "=> (pre-)processing adblock source '${src_name}'"
 
     # only process shallalist archive with updated timestamp,
     # extract and merge only domains of selected shallalist categories
     #
-    shalla_time="$(${adb_fetch} ${wget_parm} --server-response --spider "${adb_arc_shalla}" 2>&1 | grep -F "Last-Modified: " 2>/dev/null | tr -d '\r' 2>/dev/null)"
-    shalla_time="${shalla_time/*: /}"
+    shalla_time="$(${adb_fetch} ${wget_parm} --server-response --spider "${adb_arc_shalla}" 2>&1 | awk '$0 ~ /Last-Modified/ {printf substr($0,18)}' 2>/dev/null)"
     if [ -z "${shalla_time}" ]
     then
         shalla_time="$(date)"
@@ -162,8 +138,7 @@ do
     url="${src/\&ruleset=*/}"
     src_name="${src/*\&ruleset=rset_/}"
     adb_dnsfile="${adb_dnsdir}/${adb_dnsprefix}.${src_name}"
-    list_time="$(grep -F "# last modified: " "${adb_dnsfile}" 2>/dev/null)"
-    list_time="${list_time/*: /}"
+    list_time="$(awk '$0 ~ /^# last modified/ {printf substr($0,18)}' "${adb_dnsfile}" 2>/dev/null)"
     f_log "=> processing adblock source '${src_name}'"
 
     # prepare find statement with active adblock list sources
@@ -184,8 +159,7 @@ do
     then
         url_time="${shalla_time}"
     else
-        url_time="$(${adb_fetch} ${wget_parm} --server-response --spider "${url}" 2>&1 | grep -F "Last-Modified: " 2>/dev/null | tr -d '\r' 2>/dev/null)"
-        url_time="${url_time/*: /}"
+        url_time="$(${adb_fetch} ${wget_parm} --server-response --spider "${url}" 2>&1 | awk '$0 ~ /Last-Modified/ {printf substr($0,18)}' 2>/dev/null)"
     fi
     if [ -z "${url_time}" ]
     then
@@ -262,19 +236,11 @@ do
             adb_revsrclist="${adb_revsrclist} -o -name ${adb_dnsprefix}.${src_name}"
         fi
 
-        # write preliminary adblock list footer
+        # write preliminary footer
         #
         if [ $((rc)) -eq 0 ]
         then
-            if [ -n "${adb_wanif4}" ] && [ -n "${adb_wanif6}" ]
-            then
-                count="$(($(wc -l < "${adb_dnsdir}/${adb_dnsprefix}.${src_name}") / 2))"
-            else
-                count="$(wc -l < "${adb_dnsdir}/${adb_dnsprefix}.${src_name}")"
-            fi
-            printf "%s\n" "#------------------------------------------------------------------" >> "${adb_dnsfile}"
-            printf "%s\n" "# ${0##*/} (${adb_scriptver}) - ${count} ad/abuse domains blocked" >> "${adb_dnsfile}"
-            printf "%s\n" "# source: ${url}" >> "${adb_dnsfile}"
+            printf "%s\n" "#---------------------------------------------" >> "${adb_dnsfile}"
             printf "%s\n" "# last modified: ${url_time}" >> "${adb_dnsfile}"
             f_log "   domain merging finished"
         else
@@ -356,44 +322,35 @@ then
     fi
 fi
 
-# make separate adblock lists unique
+# make separate adblock lists entries unique
 #
-if [ $((adb_unique)) -eq 1 ]
+if [ "${mem_ok}" != "false" ]
 then
     if [ -n "${adb_revsrclist}" ]
     then
         f_log "remove duplicates in separate adblock lists"
 
-        # generate a temporary, unique overall list
+        # generate a temporary unique overall list
         #
-        head -qn -4 "${adb_dnsdir}/${adb_dnsprefix}."* 2>/dev/null | sort -u 2>/dev/null > "${adb_dnsdir}/tmp.overall"
+        head -qn -2 "${adb_dnsdir}/${adb_dnsprefix}."* 2>/dev/null | sort -u 2>/dev/null > "${adb_dnsdir}/tmp.overall"
 
         # loop through all separate lists, ordered by size (ascending)
         #
         for list in $(ls -Sr "${adb_dnsdir}/${adb_dnsprefix}."* 2>/dev/null)
         do
-            # check separate lists vs. overall list,
-            # rewrite only duplicate entries back to separate lists
+            # check original separate list vs. temporary overall list,
+            # rewrite only duplicate entries back to temporary separate list
             #
             list="${list/*./}"
             sort "${adb_dnsdir}/tmp.overall" "${adb_dnsdir}/${adb_dnsprefix}.${list}" 2>/dev/null | uniq -d 2>/dev/null > "${adb_dnsdir}/tmp.${list}"
 
-            # remove these entries from overall list,
-            # rewrite only unique entries back to overall list
+            # rewrite only unique entries back to temporary overall list
             #
             tmp_unique="$(sort "${adb_dnsdir}/tmp.overall" "${adb_dnsdir}/tmp.${list}" 2>/dev/null | uniq -u 2>/dev/null)"
             printf "%s\n" "${tmp_unique}" > "${adb_dnsdir}/tmp.overall"
 
-            # write final adblocklist footer
+            # write unique result back to original separate list (with list footer)
             #
-            if [ -n "${adb_wanif4}" ] && [ -n "${adb_wanif6}" ]
-            then
-                count="$(($(wc -l < "${adb_dnsdir}/tmp.${list}") / 2))"
-            else
-                count="$(wc -l < "${adb_dnsdir}/tmp.${list}")"
-            fi
-            printf "%s\n" "#------------------------------------------------------------------" >> "${adb_dnsdir}/tmp.${list}"
-            printf "%s\n" "# ${0##*/} (${adb_scriptver}) - ${count} ad/abuse domains blocked" >> "${adb_dnsdir}/tmp.${list}"
             tail -qn -2 "${adb_dnsdir}/$adb_dnsprefix.${list}" 2>/dev/null >> "${adb_dnsdir}/tmp.${list}"
             mv -f "${adb_dnsdir}/tmp.${list}" "${adb_dnsdir}/${adb_dnsprefix}.${list}" >/dev/null 2>&1
         done
@@ -401,14 +358,19 @@ then
     fi
 fi
 
-# get overall count
+# set separate list count & get overall count
 #
-if [ -n "${adb_wanif4}" ] && [ -n "${adb_wanif6}" ]
-then
-    adb_count="$(($(head -qn -4 "${adb_dnsdir}/${adb_dnsprefix}."* 2>/dev/null | wc -l) / 2))"
-else
-    adb_count="$(head -qn -4 "${adb_dnsdir}/${adb_dnsprefix}."* 2>/dev/null | wc -l)"
-fi
+for list in $(ls -Sr "${adb_dnsdir}/${adb_dnsprefix}."* 2>/dev/null)
+do
+    list="${list/*./}"
+    count="$(head -qn -2 "${adb_dnsdir}/${adb_dnsprefix}.${list}" | wc -l)"
+    if [ -n "${adb_wanif4}" ] && [ -n "${adb_wanif6}" ]
+    then
+        count=$((count / 2))
+    fi
+    printf "%s\n" "# ${0##*/} (${adb_scriptver}) - ${count} ad/abuse domains blocked" >> "${adb_dnsdir}/${adb_dnsprefix}.${list}"
+    adb_count=$((adb_count + count))
+done
 
 # restart dnsmasq with newly generated or deleted adblock lists,
 # check dnsmasq startup afterwards
@@ -416,13 +378,13 @@ fi
 if [ -n "${adb_revsrclist}" ] || [ -n "${rm_done}" ] || [ -n "${restore_done}" ]
 then
     /etc/init.d/dnsmasq restart >/dev/null 2>&1
-    sleep 2
+    sleep 1
     dns_status="$(ps 2>/dev/null | grep "[d]nsmasq" 2>/dev/null)"
     if [ -n "${dns_status}" ]
     then
         f_log "adblock lists with overall ${adb_count} domains loaded"
     else
-        rc=105
+        rc=100
         f_log "dnsmasq restart failed, please check 'logread' output" "${rc}"
         f_restore
     fi

net/adblock/files/adblock.conf

@@ -1,19 +1,16 @@
 # adblock configuration, for further information
-# see '/etc/adblock/README.md'
+# see 'https://github.com/openwrt/packages/blob/master/net/adblock/files/README.md'
 
 config adblock 'global'
 	option adb_enabled '1'
-	option adb_cfgver '0.80'
+	option adb_cfgver '0.90'
 	option adb_blacklist '/etc/adblock/adblock.blacklist'
 	option adb_whitelist '/etc/adblock/adblock.whitelist'
+	option adb_forcedns '1'
 
 config service 'backup'
 	option enabled '0'
-	option adb_backupdir '/tmp'
-
-config service 'log'
-	option enabled '0'
-	option adb_logfile '/tmp/adb_debug.log'
+	option adb_backupdir '/mnt'
 
 config source 'adaway'
 	option enabled '1'

net/adblock/files/adblock.hotplug

@@ -1,14 +1,16 @@
 #!/bin/sh
 #
 
-if [ -f "/var/run/adblock.pid" ] || [ "${ACTION}" != "ifup" ]
+adb_pid="${$}"
+adb_pidfile="/var/run/adblock.pid"
+adb_logger="/usr/bin/logger"
+
+if [ -f "${adb_pidfile}" ] || [ "${ACTION}" != "ifup" ]
 then
     exit 0
 fi
 
 . /lib/functions/network.sh
-adb_pid="${$}"
-adb_logger="/usr/bin/logger"
 network_find_wan adb_wanif4
 network_find_wan6 adb_wanif6
 

net/adblock/files/adblock.init

@@ -36,6 +36,7 @@ start()
 
 restart()
 {
+    stop
     start
 }
 

net/adblock/files/www/adblock/adblock.html

@@ -1,6 +0,0 @@
-<html>
-    <head><meta charset="utf-8"></head>
-    <body>
-        <img src="/adblock.png" border="0" alt=""></img>
-    </body>
-</html>