add knock package (thanks to Florian Fainelli)

git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@2569 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/Config.in

@@ -74,6 +74,7 @@ source "package/ipset/Config.in"
 source "package/iptables-snmp/Config.in"
 source "package/iptraf/Config.in"
 source "package/kismet/Config.in"
+source "package/knock/Config.in"
 source "package/l2tpd/Config.in"
 source "package/lighttpd/Config.in"
 source "package/linux-atm/Config.in"

package/Makefile

@@ -68,6 +68,7 @@ package-$(BR2_PACKAGE_IPTRAF) += iptraf
 package-$(BR2_PACKAGE_IRSSI) += irssi
 package-$(BR2_COMPILE_JPEG) += jpeg
 package-$(BR2_COMPILE_KISMET) += kismet
+package-$(BR2_COMPILE_KNOCK) += knock
 package-$(BR2_PACKAGE_L2TPD) += l2tpd
 package-$(BR2_PACKAGE_LCD4LINUX) += lcd4linux
 package-$(BR2_PACKAGE_LESS) += less

package/knock/Config.in

@@ -0,0 +1,41 @@
+config BR2_COMPILE_KNOCK
+	tristate
+	default n
+	depends BR2_PACKAGE_KNOCK || BR2_PACKAGE_KNOCKD
+
+config BR2_PACKAGE_KNOCK
+	prompt "knock............................. A port-knocking client"
+	tristate
+	default m if CONFIG_DEVEL 
+	select BR2_COMPILE_KNOCK
+	help
+	  It listens to all traffic on an ethernet (or PPP) interface, 
+	  looking for special "knock" sequences of port-hits. A client 
+	  makes these port-hits by sending a TCP (or UDP) packet to a 
+	  port on the server. This port need not be open -- since 
+	  knockd listens at the link-layer level, it sees all traffic 
+	  even if it's destined for a closed port. When the server 
+	  detects a specific sequence of port-hits, it runs a command 
+	  defined in its configuration file. This can be used to open 
+	  up holes in a firewall for quick access.
+	  
+	  http://www.zeroflux.org/cgi-bin/cvstrac/knock/wiki
+
+config BR2_PACKAGE_KNOCKD
+	prompt "knockd............................ A port-knocking server"
+	tristate
+	default m if CONFIG_DEVEL 
+	select BR2_COMPILE_KNOCK
+	help
+	  It listens to all traffic on an ethernet (or PPP) interface, 
+	  looking for special "knock" sequences of port-hits. A client 
+	  makes these port-hits by sending a TCP (or UDP) packet to a 
+	  port on the server. This port need not be open -- since 
+	  knockd listens at the link-layer level, it sees all traffic 
+	  even if it's destined for a closed port. When the server 
+	  detects a specific sequence of port-hits, it runs a command 
+	  defined in its configuration file. This can be used to open 
+	  up holes in a firewall for quick access.
+	  
+	  http://www.zeroflux.org/cgi-bin/cvstrac/knock/wiki
+

package/knock/Makefile

@@ -0,0 +1,75 @@
+# $Id
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=knock
+PKG_VERSION:=0.5
+PKG_RELEASE:=1
+PKG_MD5SUM:=ca09d61458974cff90a700aba6120891
+
+PKG_SOURCE_URL:=http://www.zeroflux.org/knock/files/
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_CAT:=zcat
+
+PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)
+PKG_INSTALL_DIR:=$(PKG_BUILD_DIR)/ipkg-install
+
+include $(TOPDIR)/package/rules.mk
+
+$(eval $(call PKG_template,KNOCK,knock,$(PKG_VERSION)-$(PKG_RELEASE),$(ARCH)))
+$(eval $(call PKG_template,KNOCKD,knockd,$(PKG_VERSION)-$(PKG_RELEASE),$(ARCH)))
+
+$(PKG_BUILD_DIR)/.configured:
+	(cd $(PKG_BUILD_DIR); rm -rf config.cache; \
+		$(TARGET_CONFIGURE_OPTS) \
+		CFLAGS="$(TARGET_CFLAGS) -I$(STAGING_DIR)/usr/include -I$(STAGING_DIR)/include" \
+		LDFLAGS="-L$(STAGING_DIR)/usr/lib -L$(STAGING_DIR)/lib" \
+		ac_cv_lib_pcap_pcap_open_live=yes \
+		./configure \
+			--target=$(GNU_TARGET_NAME) \
+			--host=$(GNU_TARGET_NAME) \
+			--build=$(GNU_HOST_NAME) \
+			--program-prefix="" \
+			--program-suffix="" \
+			--prefix=/usr \
+			--exec-prefix=/usr \
+			--bindir=/usr/bin \
+			--datadir=/usr/share \
+			--includedir=/usr/include \
+			--infodir=/usr/share/info \
+			--libdir=/usr/lib \
+			--libexecdir=/usr/lib \
+			--localstatedir=/var \
+			--mandir=/usr/share/man \
+			--sbindir=/usr/sbin \
+			--sysconfdir=/etc/kismet \
+			$(DISABLE_LARGEFILE) \
+			$(DISABLE_NLS) \
+			--enable-shared \
+			--disable-static \
+			--disable-rpath \
+			--with-gnu-ld \
+	);
+	touch $@
+	
+$(PKG_BUILD_DIR)/.built:
+	rm -rf $(PKG_INSTALL_DIR)
+	mkdir -p $(PKG_INSTALL_DIR)
+	$(MAKE) -C $(PKG_BUILD_DIR) \
+		DESTDIR="$(PKG_INSTALL_DIR)" \
+		all install
+	touch $@
+	
+$(IPKG_KNOCK):
+	install -d -m0755 $(IDIR_KNOCK)/usr/bin
+	cp -fpR $(PKG_INSTALL_DIR)/usr/bin/knock $(IDIR_KNOCK)/usr/bin/
+	$(RSTRIP) $(IDIR_KNOCK)
+	$(IPKG_BUILD) $(IDIR_KNOCK) $(PACKAGE_DIR)
+
+$(IPKG_KNOCKD):
+	install -d -m0755 $(IDIR_KNOCKD)/etc
+	install -m0600 $(PKG_INSTALL_DIR)/etc/knockd.conf $(IDIR_KNOCKD)/etc/
+	install -d -m0755 $(IDIR_KNOCKD)/usr/sbin
+	cp -fpR $(PKG_INSTALL_DIR)/usr/sbin/knockd $(IDIR_KNOCKD)/usr/sbin/
+	$(RSTRIP) $(IDIR_KNOCKD)
+	$(IPKG_BUILD) $(IDIR_KNOCKD) $(PACKAGE_DIR)

package/knock/ipkg/knock.control

@@ -0,0 +1,5 @@
+Package: knock
+Priority: optional
+Section: net
+Depends:
+Description: A port-knocking client

package/knock/ipkg/knockd.conffiles

@@ -0,0 +1 @@
+/etc/knockd.conf

package/knock/ipkg/knockd.control

@@ -0,0 +1,5 @@
+Package: knockd
+Priority: optional
+Section: net
+Depends: libpcap
+Description: A port-knocking server