antiblock: Add AntiBlock package

AntiBlock program proxies DNS requests.
The IP addresses of the specified domains are added to
the routing table for routing through the specified interface.

Signed-off-by: Khachatryan Karen <[email protected]>

net/antiblock/Makefile

@@ -0,0 +1,47 @@
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=antiblock
+PKG_VERSION:=1.0.0
+PKG_RELEASE:=1
+
+PKG_SOURCE_PROTO:=git
+PKG_SOURCE_URL:=https://github.com/karen07/antiblock
+PKG_SOURCE_VERSION:=bd8e4ae4fe066833d63574bad0d6e1989f6e98f0
+PKG_MIRROR_HASH:=d0411f62785c4636b760729ab269e21bba12e4c10b315ac8f7cf48f68475b796
+
+PKG_MAINTAINER:=Khachatryan Karen <[email protected]>
+PKG_LICENSE:=GPL-3.0-or-later
+
+include $(INCLUDE_DIR)/package.mk
+include $(INCLUDE_DIR)/cmake.mk
+
+define Package/antiblock
+  SECTION:=net
+  CATEGORY:=Network
+  DEPENDS:=+libcurl
+  TITLE:=AntiBlock
+  URL:=https://github.com/karen07/antiblock
+endef
+
+define Package/antiblock/description
+  AntiBlock program proxies DNS requests.
+  The IP addresses of the specified domains are added to
+  the routing table for routing through the specified interface.
+endef
+
+define Package/antiblock/conffiles
+/etc/config/antiblock
+endef
+
+define Package/antiblock/install
+	$(INSTALL_DIR) $(1)/usr/bin
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/antiblock $(1)/usr/bin/antiblock
+
+	$(INSTALL_DIR) $(1)/etc/init.d
+	$(INSTALL_BIN) ./files/etc/init.d/antiblock $(1)/etc/init.d/antiblock
+
+	$(INSTALL_DIR) $(1)/etc/config
+	$(INSTALL_CONF) ./files/etc/config/antiblock $(1)/etc/config/antiblock
+endef
+
+$(eval $(call BuildPackage,antiblock))

net/antiblock/files/etc/config/antiblock

@@ -0,0 +1,10 @@
+
+#config antiblock
+	#option url 'https://antifilter.download/list/domains.lst'
+	#option file '/root/my_urls.txt'
+	#option DNS '1.1.1.1:53'
+	#option listen '192.168.1.1:5053'
+	#option VPN_name 'VPN'
+	#option output '/tmp/antiblock'
+	#option log '1'
+	#option stat '1'

net/antiblock/files/etc/init.d/antiblock

@@ -0,0 +1,124 @@
+#!/bin/sh /etc/rc.common
+
+START=99
+USE_PROCD=1
+
+start_service() {
+	echo "AntiBlock start"
+
+	local log="$(uci -q get antiblock.@antiblock[0].log)"
+	local stat="$(uci -q get antiblock.@antiblock[0].stat)"
+	local url="$(uci -q get antiblock.@antiblock[0].url)"
+	local file="$(uci -q get antiblock.@antiblock[0].file)"
+	local output="$(uci -q get antiblock.@antiblock[0].output)"
+	local DNS="$(uci -q get antiblock.@antiblock[0].DNS)"
+	local listen="$(uci -q get antiblock.@antiblock[0].listen)"
+	local VPN_name="$(uci -q get antiblock.@antiblock[0].VPN_name)"
+
+	procd_open_instance
+
+	procd_set_param command "/usr/bin/antiblock"
+	procd_set_param stdout 1
+
+	if [ -n "$log" ]; then
+		procd_append_param command -log
+	fi
+	if [ -n "$stat" ]; then
+		procd_append_param command -stat
+	fi
+	if [ -n "$url" ]; then
+		procd_append_param command -url "$url"
+	fi
+	if [ -n "$file" ]; then
+		procd_append_param command -file "$file"
+	fi
+	if [ -n "$output" ]; then
+		mkdir -p "$output"
+		procd_append_param command -output "$output"
+	fi
+	if [ -n "$DNS" ]; then
+		procd_append_param command -DNS "$DNS"
+	fi
+	if [ -n "$listen" ]; then
+		local forward="$(uci -q get antiblock.@dhcp_backup[0].forward)"
+
+		if [ -z "$forward" ]; then
+			local listen_IP="$(echo $listen | cut -d ':' -f1)"
+			local listen_port="$(echo $listen | cut -d ':' -f2)"
+
+			local dhcp_noresolv="$(uci -q get dhcp.@dnsmasq[0].noresolv)"
+			local dhcp_server="$(uci -q get dhcp.@dnsmasq[0].server)"
+
+			uci -q add antiblock dhcp_backup >/dev/null 2>&1
+
+			if [ -n "$dhcp_noresolv" ]; then
+				uci -q set antiblock.@dhcp_backup[0].noresolv="$dhcp_noresolv"
+			fi
+			if [ -n "$dhcp_server" ]; then
+				uci -q set antiblock.@dhcp_backup[0].server="$dhcp_server"
+			fi
+
+			uci -q set dhcp.@dnsmasq[0].noresolv="1"
+			uci -q delete dhcp.@dnsmasq[0].server
+			uci -q add_list dhcp.@dnsmasq[0].server="$listen_IP#$listen_port"
+
+			uci -q set antiblock.@dhcp_backup[0].forward="1"
+		fi
+
+		procd_append_param command -listen "$listen"
+	fi
+	if [ -n "$VPN_name" ]; then
+		local gateway="$(uci -q get network.$VPN_name.addresses | cut -d '/' -f1)"
+		procd_append_param command -gateway "$gateway"
+	fi
+
+	procd_close_instance
+
+	uci -q commit antiblock.@dhcp_backup[0]
+	uci -q commit dhcp.@dnsmasq[0]
+
+	/etc/init.d/dnsmasq restart >/dev/null 2>&1
+}
+
+stop_service() {
+	echo "AntiBlock stop"
+
+	local forward="$(uci -q get antiblock.@dhcp_backup[0].forward)"
+
+	if [ -n "$forward" ]; then
+		uci -q delete dhcp.@dnsmasq[0].noresolv
+		uci -q delete dhcp.@dnsmasq[0].server
+
+		local dhcp_noresolv_backup="$(uci -q get antiblock.@dhcp_backup[0].noresolv)"
+		local dhcp_server_backup="$(uci -q get antiblock.@dhcp_backup[0].server)"
+
+		if [ -n "$dhcp_noresolv_backup" ]; then
+			uci -q set dhcp.@dnsmasq[0].noresolv="$dhcp_noresolv_backup"
+		fi
+		if [ -n "$dhcp_server_backup" ]; then
+			for i in $(echo $dhcp_server_backup | tr " " "\n"); do
+				uci -q add_list dhcp.@dnsmasq[0].server="$i"
+			done
+		fi
+
+		uci -q delete antiblock.@dhcp_backup[0]
+	fi
+
+	local VPN_name="$(uci -q get antiblock.@antiblock[0].VPN_name)"
+
+	if [ -n "$VPN_name" ]; then
+		local ips="$(ip r | grep "dev $VPN_name" | grep via | cut -d' ' -f 1)"
+		for i in $ips; do
+			ip r del $i >/dev/null 2>&1
+		done
+	fi
+
+	uci -q commit antiblock.@dhcp_backup[0]
+	uci -q commit dhcp.@dnsmasq[0]
+
+	/etc/init.d/dnsmasq restart >/dev/null 2>&1
+}
+
+service_triggers() {
+	procd_add_reload_trigger "antiblock"
+}

net/antiblock/test.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+antiblock | grep "Antiblock started"