This adds tcpproxy a simple tcp connection proxy.

Signed-off-by: Christian Pointner <equinox@spreadspace.org>

net/tcpproxy/Makefile

@@ -0,0 +1,84 @@
+#
+# Copyright (C) 2010 Christian Pointner,
+#                    <equinox@spreadspace.org>
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+# This Makefile builds tcpproxy Package for OpenWRT
+#
+# $Id: $
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=tcpproxy
+PKG_VERSION:=1.1
+PKG_RELEASE:=1
+
+PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=http://www.spreadspace.org/tcpproxy/releases/
+PKG_MD5SUM:=55126473bcde635f9ee019c6caf19bb7
+
+include $(INCLUDE_DIR)/package.mk
+
+
+define Package/tcpproxy
+  SECTION:=net
+  CATEGORY:=Network
+  SUBMENU:=Routing and Redirection
+  TITLE:=IPv4/IPv6 tcp connection proxy
+  URL:=http://www.spreadspace.org/tcpproxy/
+  MAINTAINER:=Christian Pointner <equinox@spreadspace.org>
+endef
+
+define Package/tcpproxy/conffiles
+/etc/config/tcpproxy
+endef
+
+define Package/tcpproxy/description
+tcpproxy is a simple tcp connection proxy which combines the features of rinetd and 6tunnel.
+ tcpproxy supports IPv4 and IPv6 and also supports connections from IPv6 to IPv4 endpoints and vice versa.
+endef
+
+define Package/tcpproxy/configure
+endef
+
+define Build/Configure
+	(cd $(PKG_BUILD_DIR)/src; \
+    touch include.mk; \
+    echo '#ifndef TCPPROXY_config_h_INCLUDED' > config.h; \
+    echo '#define TCPPROXY_config_h_INCLUDED' >> config.h; \
+    echo '' >> config.h; \
+    echo '#define VERSION_STRING_0 "tcpproxy version '`cat $(PKG_BUILD_DIR)/version`'"' >> config.h; \
+    echo '#define VERSION_STRING_1 "built on '`hostname`', '`date +"%d.%m.%Y %H:%M:%S %Z"`'"' >> config.h; \
+    echo '' >> config.h; \
+    echo '#define TARGET "linux"' >> config.h; \
+    echo '#define PREFIX "/usr"' >> config.h; \
+    echo '#define BINDIR "/usr/bin"' >> config.h; \
+    echo '#define ETCDIR "/etc"' >> config.h; \
+    echo '#define CONFFILE "/etc/tcpproxy.conf"' >> config.h; \
+    echo '' >> config.h; \
+    echo '#endif' >> config.h \
+  )
+endef
+
+define Build/Compile
+	$(MAKE) -C $(PKG_BUILD_DIR)/src \
+    $(TARGET_CONFIGURE_OPTS) \
+    TARGET=Linux \
+    CFLAGS="$(TARGET_CFLAGS)" \
+    LDFLAGS="$(TARGET_LDFLAGS)"
+	$(STRIP) $(PKG_BUILD_DIR)/src/tcpproxy
+endef
+
+define Package/tcpproxy/install
+	$(INSTALL_DIR) $(1)/etc/config
+	$(INSTALL_DATA) ./files/tcpproxy.config $(1)/etc/config/tcpproxy
+	$(INSTALL_DIR) $(1)/usr/bin
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/$(2)/src/tcpproxy $(1)/usr/bin/tcpproxy
+	$(INSTALL_DIR) $(1)/etc/init.d
+	$(INSTALL_BIN) ./files/tcpproxy.init $(1)/etc/init.d/tcpproxy
+endef
+
+$(eval $(call BuildPackage,tcpproxy))

net/tcpproxy/files/tcpproxy.config

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+config tcpproxy
+  option username 'nobody'
+  option groupname 'nogroup'
+#  option chroot "/var/run/tcpproxy"
+#  option log 'syslog:3,tcpproxy,daemon'
+
+config listen
+  option disabled 1
+
+  option local_port '8000'
+  option resolv 'ipv4'
+
+  option remote_addr 'www.google.at'
+  option remote_port '80'
+  option remote_resolv 'ipv6'
+  option source_addr '2a02:3e0:2002:1:215:58ff:fe31:2ce7'
+
+config listen
+  option disabled 1
+
+  option local_addr '2a02:3e0:2002:1:215:58ff:fe31:2ce7'
+  option local_port '1234'
+
+  option remote_addr 'www.google.at'
+  option remote_port '80'
+  option remote_resolv 'ipv4'

net/tcpproxy/files/tcpproxy.init

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+#!/bin/sh /etc/rc.common
+START=50
+
+BIN=tcpproxy
+DAEMON=/usr/bin/$BIN
+DAEMON_ARGS=""
+DESC=$BIN
+RUN_D=/var/run
+CONFIG_DIR=/var/etc
+CONFIG_FILE=$CONFIG_DIR/$BIN.conf
+
+tcpproxy_write_config() {
+  local cfg="$1"
+
+  config_get_bool value "$cfg" disabled 0
+  [ "$value" -ne 0 ] && return
+
+  local local_addr=""
+  local resolv=""
+  local local_port=""
+  local remote_addr=""
+  local remote_resolv=""
+  local remote_port=""
+  local source_addr=""
+
+  config_get local_addr "$cfg" local_addr
+  config_get local_port "$cfg" local_port
+  config_get resolv "$cfg" resolv
+  config_get remote_addr "$cfg" remote_addr
+  config_get remote_port "$cfg" remote_port
+  config_get remote_resolv "$cfg" remote_resolv
+  config_get source_addr "$cfg" source_addr
+
+  if [ -z "$local_addr" ]; then
+    local_addr="*"
+  fi
+
+  echo "listen $local_addr $local_port" >> $CONFIG_FILE
+  echo "{" >> $CONFIG_FILE
+  if [ -n "$resolv" ]; then
+    echo "  resolv: $resolv;" >> $CONFIG_FILE
+  fi
+  echo "  remote: $remote_addr $remote_port;" >> $CONFIG_FILE
+  if [ -n "$remote_resolv" ]; then
+    echo "  remote-resolv: $remote_resolv;" >> $CONFIG_FILE
+  fi
+  if [ -n "$source_addr" ]; then
+    echo "  source: $source_addr;" >> $CONFIG_FILE
+  fi
+  echo "};" >> $CONFIG_FILE
+  echo "" >> $CONFIG_FILE
+}
+
+tcpproxy_generate_args() {
+  local cfg="$1"
+  local option
+  local value
+
+  for option in username groupname chroot log
+  do
+    config_get value "$cfg" "$option"
+    option=`echo $option | tr '_' '-'`
+    if [ -n "$value" ]; then
+      DAEMON_ARGS="$DAEMON_ARGS --$option $value"
+    fi
+  done
+}
+
+tcpproxy_rebuild_config() {
+  mkdir -p $CONFIG_DIR
+  rm -f $CONFIG_FILE
+  touch $CONFIG_FILE
+  config_load $BIN
+  config_foreach tcpproxy_write_config listen
+}
+
+start() {
+  echo -n "Starting $DESC "
+  tcpproxy_rebuild_config
+  config_foreach tcpproxy_generate_args $BIN
+  $DAEMON  $DAEMON_ARGS --config $CONFIG_FILE --write-pid "$RUN_D/$BIN.pid"
+  echo "."
+}
+
+reload() {
+  echo -n "Reloading $DESC "
+  tcpproxy_rebuild_config
+  kill -SIGHUP `cat "$RUN_D/$BIN.pid"`
+  echo "."
+}
+
+stop() {
+  echo -n "Stopping $DESC "
+  kill `cat $RUN_D/$BIN.pid` > /dev/null 2>&1
+  echo "."
+}