adblock: update 2.6.1

* add "adb_forcedns" to redirect all dns requests
  to local resolver (disabled by default)
* add "adb_forcesrt" to enable overall sort / duplicate removal
  on low memory devices with less than 64 MB RAM (disabled by default)

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

net/adblock/Makefile

@@ -6,8 +6,8 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=adblock
-PKG_VERSION:=2.6.0
-PKG_RELEASE:=2
+PKG_VERSION:=2.6.1
+PKG_RELEASE:=1
 PKG_LICENSE:=GPL-3.0+
 PKG_MAINTAINER:=Dirk Brenken <dev@brenken.org>
 

net/adblock/files/README.md

@@ -59,6 +59,7 @@ A lot of people already use adblocker plugins within their desktop browsers, but
 * simple but yet powerful adblock engine: adblock does not use error prone external iptables rulesets, http pixel server instances and things like that
 * automatically selects dnsmasq or unbound as dns backend
 * automatically selects uclient-fetch or wget as download utility (other tools like curl or aria2c are supported as well)
+* support http only mode (without installed ssl library) for all non-SSL blocklist sources
 * automatically supports a wide range of router modes, even AP modes are supported
 * full IPv4 and IPv6 support
 * supports tld compression (top level domain compression), this feature removes thousands of needless host entries from the block lists and lowers the memory footprint for the dns backends
@@ -73,6 +74,8 @@ A lot of people already use adblocker plugins within their desktop browsers, but
 * suspend & resume adblock actions temporarily without block list reloading
 * runtime information available via LuCI & via 'status' init command
 * query function to quickly identify blocked (sub-)domains, e.g. for whitelisting
+* optional: force dns requests to local resolver
+* optional: force overall sort / duplicate removal for low memory devices (handle with care!)
 * optional: automatic block list backup & restore, backups will be (de-)compressed and restored on the fly in case of any runtime error
 * optional: add new adblock sources on your own via uci config
 
@@ -81,7 +84,7 @@ A lot of people already use adblocker plugins within their desktop browsers, but
 * a usual setup with an enabled dns backend at minimum - dump AP modes without a working dns backend are _not_ supported
 * a download utility:
     * to support all blocklist sources a full version (with ssl support) of 'wget', 'uclient-fetch' with one of the 'libustream-*' ssl libraries, 'aria2c' or 'curl' is required
-    * for limited devices with real memory constraints, adblock provides also a plain http option and supports wget-nossl and uclient-fetch (wihout libustream-ssl), too
+    * for limited devices with real memory constraints, adblock provides also a plain http option and supports wget-nossl and uclient-fetch (without libustream-ssl), too
     * for more configuration options see examples below
 
 ## LEDE trunk Installation & Usage
@@ -104,7 +107,6 @@ A lot of people already use adblocker plugins within their desktop browsers, but
 * **restrict procd interface trigger:** restrict the procd interface trigger to a (list of) certain interface(s) (default: wan). To disable it at all, remove all entries
 * **suspend & resume adblocking:** to quickly switch the adblock service 'on' or 'off', simply use _/etc/init.d/adblock [suspend|resume]_
 * **domain query:** to query the active block lists for a specific domain, please run _/etc/init.d/adblock query `<DOMAIN>`_ (see example below)
-* **divert dns requests:** to force dns requests to your local dns resolver add an appropriate firewall rule (see example below)
 * **add new list sources:** you could add new block list sources on your own via uci config, all you need is a source url and an awk one-liner (see example below)
 * **disable active dns probing in windows 10:** to prevent a yellow exclamation mark on your internet connection icon (which wrongly means connected, but no internet), please change the following registry key/value from "1" to "0" _HKLM\SYSTEM\CurrentControlSet\Services\NlaSvc\Parameters\Internet\EnableActiveProbing_
 
@@ -115,7 +117,9 @@ A lot of people already use adblocker plugins within their desktop browsers, but
     * adb\_iface => set the procd interface trigger to a (list of) lan / wan interface(s) (default: 'wan')
     * adb\_fetch => full path to a different download utility, see example below (default: not set, use wget)
     * adb\_fetchparm => options for the download utility, see example below (default: not set, use wget options)
-    * adb\_triggerdelay => additional trigger delay in seconds before adblock processing starts (default: '1')
+    * adb\_triggerdelay => additional trigger delay in seconds before adblock processing starts (default: '2')
+    * adb\_forcedns => force dns requests to local resolver (default: '0', disabled)
+    * adb\_forcesrt => force overall sort on low memory devices with less than 64 MB RAM (default: '0', disabled)
 
 ## Examples
 **change default dns backend to 'unbound':**
@@ -209,17 +213,6 @@ For every domain it returns the overall count plus a distinct list of active blo
 In the example above whitelist "www.doubleclick.net" to free the submitted domain.
 </code></pre>
   
-**divert dns requests to local dns resolver in /etc/config/firewall:**
-<pre><code>
-config redirect
-    option name 'Divert DNS'
-    option src 'lan'
-    option proto 'tcp udp'
-    option src_dport '53'
-    option dest_port '53'
-    option target 'DNAT'
-</code></pre>
-  
 **add a new block list source:**
 <pre><code>
 1. the easy way ...

net/adblock/files/adblock.conf

@@ -4,6 +4,8 @@
 config adblock 'global'
 	option adb_enabled '1'
 	option adb_debug '0'
+	option adb_forcesrt '0'
+	option adb_forcedns '0'
 	option adb_iface 'wan'
 	option adb_triggerdelay '2'
 	option adb_whitelist '/etc/adblock/adblock.whitelist'

net/adblock/files/adblock.sh

@@ -10,10 +10,12 @@
 #
 LC_ALL=C
 PATH="/usr/sbin:/usr/bin:/sbin:/bin"
-adb_ver="2.6.0-2"
+adb_ver="2.6.1"
 adb_sysver="$(ubus -S call system board | jsonfilter -e '@.release.description')"
 adb_enabled=1
 adb_debug=0
+adb_forcesrt=0
+adb_forcedns=0
 adb_backup=0
 adb_backupdir="/mnt"
 adb_whitelist="/etc/adblock/adblock.whitelist"
@@ -113,6 +115,26 @@ f_envload()
     #
     config_load adblock
     config_foreach parse_config source
+
+    # force dns to local resolver
+    #
+    if [ ${adb_forcedns} -eq 1 ] && [ -z "$(uci -q get firewall.adblock_dns)" ]
+    then
+        uci -q set firewall.adblock_dns="redirect"
+        uci -q set firewall.adblock_dns.src="lan"
+        uci -q set firewall.adblock_dns.proto="tcp udp"
+        uci -q set firewall.adblock_dns.src_dport="53"
+        uci -q set firewall.adblock_dns.dest_port="53"
+        uci -q set firewall.adblock_dns.target="DNAT"
+    elif [ ${adb_forcedns} -eq 0 ] && [ -n "$(uci -q get firewall.adblock_dns)" ]
+    then
+        uci -q delete firewall.adblock_dns
+    fi
+    if [ -n "$(uci -q changes firewall)" ]
+    then
+        uci -q commit firewall
+        /etc/init.d/firewall reload >/dev/null 2>&1
+    fi
 }
 
 # f_envcheck: check/set environment prerequisites
@@ -416,7 +438,7 @@ f_main()
 
         # download block list
         #
-        f_log "debug" "name: ${src_name}, enabled: ${enabled}, backup: ${adb_backup}, dns: ${adb_dns}, fetch: ${adb_fetchinfo}, memory: ${mem_total}"
+        f_log "debug" "name: ${src_name}, enabled: ${enabled}, backup: ${adb_backup}, dns: ${adb_dns}, fetch: ${adb_fetchinfo}, memory: ${mem_total}, force srt/dns: ${adb_forcesrt}/${adb_forcedns}"
         if [ "${src_name}" = "blacklist" ]
         then
             cat "${url}" 2>/dev/null > "${adb_tmpload}"
@@ -488,7 +510,7 @@ f_main()
     #
     for src_name in $(ls -dASr "${adb_tmpdir}/${adb_dnsprefix}"* 2>/dev/null)
     do
-        if [ ${mem_total} -ge 64000 ]
+        if [ ${mem_total} -ge 64000 ] || [ ${adb_forcesrt} -eq 1 ]
         then
             if [ -s "${adb_tmpdir}/blocklist.overall" ]
             then