Makefile

#
# Copyright (C) 2015-2016 wongsyrone
#
# This is free software, licensed under the GNU General Public License v3.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk

PKG_NAME:=pcap-dnsproxy
PKG_VERSION:=0.4.5.3
PKG_RELEASE:=1

PKG_SOURCE_PROTO:=git
PKG_SOURCE_URL:=https://github.com/chengr28/Pcap_DNSProxy.git
PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
PKG_SOURCE_VERSION:=b888c68cc3339a2192f319ec9661acb3fda27d61
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.gz
CMAKE_INSTALL:=1

PKG_LICENSE:=GPL-2.0
PKG_LICENSE_FILES:=LICENSE

PKG_MAINTAINER:=Chengr28 <chengr28@gmail.com>

include $(INCLUDE_DIR)/package.mk
include $(INCLUDE_DIR)/cmake.mk

TARGET_CFLAGS += $(FPIC)

CMAKE_OPTIONS += \
	-DPLATFORM_OPENWRT=ON \
	$(if $(CONFIG_PACKAGE_pcap-dnsproxy_libsodium),-DENABLE_LIBSODIUM=ON,-DENABLE_LIBSODIUM=OFF) \
	$(if $(CONFIG_PACKAGE_pcap-dnsproxy_libpcap),-DENABLE_PCAP=ON,-DENABLE_PCAP=OFF)

# Port 53 leads to dnsmasq startup failure.
define Package/pcap-dnsproxy/config
	config PACKAGE_pcap-dnsproxy_libpcap
		bool "Build with libpcap support.(Strongly recommended)"
		default y
		help
		  LibPcap is for packet capture, Pcap_DNSProxy takes advantage
		  of it to detect poisoned DNS reply.

		  We strongly recommend to keep it as-is.
	config PACKAGE_pcap-dnsproxy_libsodium
		bool "Build with libsodium support.(Recommended)"
		default y
		help
		  LibSodium is for DNSCurve/DNSCrypt protocol support.

		  We recommend to keep it as-is unless you do NOT
		  need this protocol anymore.
	config PCAP_DNSPROXY_LISTENPORT
		int "Listen Port, should NOT be 53"
		default 1053
		help
		  You can customize the listen port of Pcap_DNSProxy.
		  Note that you should NOT set the value to 53, which
		  conflicts with DNSMasq in OpenWrt.
	menu "Tools and miscellaneous"
		config PACKAGE_pcap-dnsproxy_KeyPairGenerator
			bool "Bundle KeyPairGenerator."
			default n
			help
			  Package KeyPairGenerator into final IPK.

			  Unless you really need it, you should
			  probably say N here.
		config PACKAGE_pcap-dnsproxy_FileHash
			bool "Bundle FileHash."
			default n
			help
			  Package FileHash into final IPK.

			  Unless you really need it, you should
			  probably say N here.
		config PACKAGE_pcap-dnsproxy_advancedoptions
			bool "Compile with advanced options. (for expert only)"
			default n
			help
			  Enable this option to use link-time optimization and
			  other GCC compile flags to reduce binary size.

			  Please refer to Makefile for details.

			  Unless you know what you are doing, you
			  should probably say N here.
	endmenu
endef

# Note: GCC 4.6 and 4.8 dont have complete C++11 support
#       Please use GCC 4.9 or higher to compile
# uclibcxx is uClibc++, which stands for C++ library for embedded systems.
# libstdcpp is shipped by GCC project, which usually takes more space than uClibc++.
# but it has more useful features we need, i.e. full regular expression support.
define Package/pcap-dnsproxy
	SECTION:=net
	CATEGORY:=Network
	TITLE:=A local DNS server based on LibPcap
	URL:=https://github.com/chengr28/Pcap_DNSProxy
	DEPENDS:=+libpthread +libstdcpp \
		+PACKAGE_pcap-dnsproxy_libpcap:libpcap \
		+PACKAGE_pcap-dnsproxy_libsodium:libsodium \
		@GCC_VERSION_4_6:BROKEN
endef

# Some advanced compile flags for expert
ifneq ($(CONFIG_PACKAGE_pcap-dnsproxy_advancedoptions),)
	# Try to reduce binary size
	TARGET_CFLAGS += -ffunction-sections -fdata-sections
	TARGET_LDFLAGS += -Wl,--gc-sections
	# Use Link time optimization
	TARGET_CFLAGS += -flto
	TARGET_LDFLAGS += -Wl,-flto
endif

define Package/pcap-dnsproxy/conffiles
/etc/pcap-dnsproxy/Config.conf
/etc/pcap-dnsproxy/Hosts.conf
/etc/pcap-dnsproxy/IPFilter.conf
/etc/pcap-dnsproxy/Routing.txt
/etc/pcap-dnsproxy/WhiteList.txt
endef

define Package/pcap-dnsproxy/postinst
#!/bin/sh
# check if we are on real system
if [ -z "$${IPKG_INSTROOT}" ]; then
	echo "Be sure to set configuration file(s) before rebooting your router."
	/etc/init.d/pcap-dnsproxy enable
fi
exit 0
endef

# Stop and disable service(removing rc.d symlink) before removing
define Package/pcap-dnsproxy/prerm
#!/bin/sh
# check if we are on real system
if [ -z "$${IPKG_INSTROOT}" ]; then
	echo "Stopping service and removing rc.d symlink for pcap-dnsproxy"
	/etc/init.d/pcap-dnsproxy stop
	/etc/init.d/pcap-dnsproxy disable
fi
exit 0
endef

define Package/pcap-dnsproxy/install
	$(INSTALL_DIR) $(1)/usr/sbin
	$(if $(CONFIG_PACKAGE_pcap-dnsproxy_KeyPairGenerator),$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/sbin/KeyPairGenerator $(1)/usr/sbin/KeyPairGenerator)
	$(if $(CONFIG_PACKAGE_pcap-dnsproxy_FileHash),$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/sbin/FileHash $(1)/usr/sbin/FileHash)
	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/sbin/Pcap_DNSProxy $(1)/usr/sbin/Pcap_DNSProxy
	$(INSTALL_DIR) $(1)/etc/config
	$(INSTALL_DATA) ./files/pcap-dnsproxy.config $(1)/etc/config/pcap-dnsproxy
	$(INSTALL_DIR) $(1)/etc/init.d
	$(INSTALL_BIN) ./files/pcap-dnsproxy.init $(1)/etc/init.d/pcap-dnsproxy
	$(INSTALL_DIR) $(1)/etc/pcap-dnsproxy
	$(SED) 's,^\xEF\xBB\xBF,,g'                                                       $(PKG_BUILD_DIR)/Source/ExampleConfig/*
	$(SED) 's,\x0D,,g'                                                                $(PKG_BUILD_DIR)/Source/ExampleConfig/*
	$(SED) 's,Listen Port = 53,Listen Port = $(CONFIG_PCAP_DNSPROXY_LISTENPORT),g'    $(PKG_BUILD_DIR)/Source/ExampleConfig/Config.ini
	$(SED) 's,Log Maximum Size = 8MB,Log Maximum Size = 50KB,g'                       $(PKG_BUILD_DIR)/Source/ExampleConfig/Config.ini
	$(SED) 's,Operation Mode = Private,Operation Mode = Server,g'                     $(PKG_BUILD_DIR)/Source/ExampleConfig/Config.ini
	$(INSTALL_CONF) $(PKG_BUILD_DIR)/Source/ExampleConfig/Config.ini $(1)/etc/pcap-dnsproxy/Config.conf
	$(INSTALL_CONF) $(PKG_BUILD_DIR)/Source/ExampleConfig/Hosts.ini $(1)/etc/pcap-dnsproxy/Hosts.conf
	$(INSTALL_CONF) $(PKG_BUILD_DIR)/Source/ExampleConfig/IPFilter.ini $(1)/etc/pcap-dnsproxy/IPFilter.conf
	$(INSTALL_CONF) $(PKG_BUILD_DIR)/Source/ExampleConfig/Routing.txt $(1)/etc/pcap-dnsproxy/Routing.txt
	$(INSTALL_CONF) $(PKG_BUILD_DIR)/Source/ExampleConfig/WhiteList.txt $(1)/etc/pcap-dnsproxy/WhiteList.txt
endef


$(eval $(call BuildPackage,pcap-dnsproxy))