script/_nat64 - platform/external/ot-br-posix - Git at Google

 #!/bin/sh
 #
 #  Copyright (c) 2017, The OpenThread Authors.
 #  All rights reserved.
 #
 #  Redistribution and use in source and binary forms, with or without
 #  modification, are permitted provided that the following conditions are met:
 #  1. Redistributions of source code must retain the above copyright
 #     notice, this list of conditions and the following disclaimer.
 #  2. Redistributions in binary form must reproduce the above copyright
 #     notice, this list of conditions and the following disclaimer in the
 #     documentation and/or other materials provided with the distribution.
 #  3. Neither the name of the copyright holder nor the
 #     names of its contributors may be used to endorse or promote products
 #     derived from this software without specific prior written permission.
 #
 #  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 #  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 #  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 #  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 #  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 #  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 #  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 #  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 #  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 #  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 #  POSSIBILITY OF SUCH DAMAGE.
 #
 #   Description:
 #       This script manipulates nat64 configuration.
 #

 TAYGA_DEFAULT=/etc/default/tayga
 TAYGA_CONF=/etc/tayga.conf
 TAYGA_IPV4_ADDR=192.168.255.1
 TAYGA_IPV6_ADDR=fdaa:bb:1::1
 TAYGA_TUN_V6_ADDR=fdaa:bb:1::2
 NAT44_SERVICE=/etc/init.d/otbr-nat44
 WLAN_IFNAMES=eth0

 # Currently solution was verified only on raspbian and ubuntu.
 #
 #without NAT64 || test $PLATFORM = ubuntu || test $PLATFORM = raspbian || die "nat64 is not tested under $PLATFORM."

 nat64_install()
 {
     with NAT64 || return 0

     test -f $TAYGA_DEFAULT -a -f $TAYGA_CONF || die 'Cannot find tayga configuration file!'
     sudo sed -i 's/^RUN="no"/RUN="yes"/' $TAYGA_DEFAULT
     sudo sed -i 's/^IPV4_TUN_ADDR=""/IPV4_TUN_ADDR="'$TAYGA_IPV4_ADDR'"/' $TAYGA_DEFAULT
     sudo sed -i 's/^IPV6_TUN_ADDR=""/IPV6_TUN_ADDR="'$TAYGA_TUN_V6_ADDR'"/' $TAYGA_DEFAULT
     sudo sed -i 's/^prefix /##prefix /' $TAYGA_CONF
     sudo sed -i 's/^# prefix 64:ff9b::\/96/prefix 64:ff9b::\/96/' $TAYGA_CONF
     sudo sed -i '/^#ipv6-addr/a ipv6-addr '$TAYGA_IPV6_ADDR $TAYGA_CONF
     sudo tee $NAT44_SERVICE <<EOF
 #! /bin/sh
 #
 #  Copyright (c) 2017, The OpenThread Authors.
 #  All rights reserved.
 #
 #  Redistribution and use in source and binary forms, with or without
 #  modification, are permitted provided that the following conditions are met:
 #  1. Redistributions of source code must retain the above copyright
 #     notice, this list of conditions and the following disclaimer.
 #  2. Redistributions in binary form must reproduce the above copyright
 #     notice, this list of conditions and the following disclaimer in the
 #     documentation and/or other materials provided with the distribution.
 #  3. Neither the name of the copyright holder nor the
 #     names of its contributors may be used to endorse or promote products
 #     derived from this software without specific prior written permission.
 #
 #  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 #  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 #  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 #  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 #  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 #  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 #  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 #  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 #  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 #  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 #  POSSIBILITY OF SUCH DAMAGE.
 #
 ### BEGIN INIT INFO
 # Provides:          otbr-nat44
 # Required-Start:    tayga
 # Required-Stop:
 # Should-Start:
 # Should-Stop:
 # Default-Start:     2 3 4 5
 # Default-Stop:
 # Short-Description: iptables NAT44
 # Description:       NAT44 is require for OpenThread border router
 #                    to connect to arbitrary IPv4 endpoints.
 ### END INIT INFO

 . /lib/lsb/init-functions
 . /lib/init/vars.sh

 case "\$1" in
     start)
 EOF
     for IFNAME in "$WLAN_IFNAMES"; do
         echo "      iptables -t nat -A POSTROUTING -o $IFNAME -j MASQUERADE" | sudo tee -a $NAT44_SERVICE
     done
     sudo tee -a $NAT44_SERVICE <<EOF
         ;;
     restart|reload|force-reload)
         echo "Error: argument '\$1' not supported" >&2
         exit 3
         ;;
     stop|status)
         # No-op
         ;;
     *)
         echo "Usage: \$0 start|stop" >&2
         exit 3
         ;;
 esac
 EOF
     sudo chmod a+x $NAT44_SERVICE
     if have systemctl; then
         sudo systemctl stop tayga || die 'Unable to stop tayga service!'
         sudo systemctl enable otbr-nat44 || die 'Unable to enable nat44 service!'
     fi
 }

 nat64_uninstall()
 {
     with NAT64 || return 0

     nat64_stop
     sudo sed -i 's/^RUN="yes"/RUN="no"/' $TAYGA_DEFAULT
     sudo sed -i 's/^IPV4_TUN_ADDR="'$TAYGA_IPV4_ADDR'"/IPV4_TUN_ADDR=""/' $TAYGA_DEFAULT
     sudo sed -i 's/^prefix 64:ff9b::\/96/# prefix 64:ff9b::\/96/' $TAYGA_CONF
     sudo sed -i 's/^##prefix /prefix /' $TAYGA_CONF
     sudo sed -i '/^ipv6-addr '$TAYGA_IPV6_ADDR'/d' $TAYGA_CONF

     if have systemctl; then
         sudo systemctl disable otbr-nat44 || true
     fi

     # systemctl disable doesn't remove sym-links
     if have update-rc.d; then
         sudo update-rc.d otbr-nat44 remove || true
     fi
     test ! -f $NAT44_SERVICE || sudo rm $NAT44_SERVICE
 }

 nat64_start()
 {
     with NAT64 || return 0

     if [ -f /.dockerenv ]; then
         service tayga start || die 'Failed to start tayga'
     elif have systemctl; then
         sudo systemctl start tayga || die 'Failed to start tayga!'
         sudo systemctl start otbr-nat44 || die 'Failed to start NAT44!'
     fi
 }

 nat64_stop()
 {
     with NAT64 || return 0

     if [ -f /.dockerenv ]; then
         service tayga stop || true
     elif have systemctl; then
         sudo systemctl stop tayga || true
         sudo systemctl stop otbr-nat44 || true
     fi
 }
	#!/bin/sh
	#
	# Copyright (c) 2017, The OpenThread Authors.
	# All rights reserved.
	#
	# Redistribution and use in source and binary forms, with or without
	# modification, are permitted provided that the following conditions are met:
	# 1. Redistributions of source code must retain the above copyright
	# notice, this list of conditions and the following disclaimer.
	# 2. Redistributions in binary form must reproduce the above copyright
	# notice, this list of conditions and the following disclaimer in the
	# documentation and/or other materials provided with the distribution.
	# 3. Neither the name of the copyright holder nor the
	# names of its contributors may be used to endorse or promote products
	# derived from this software without specific prior written permission.
	#
	# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
	# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	# POSSIBILITY OF SUCH DAMAGE.
	#
	# Description:
	# This script manipulates nat64 configuration.
	#

	TAYGA_DEFAULT=/etc/default/tayga
	TAYGA_CONF=/etc/tayga.conf
	TAYGA_IPV4_ADDR=192.168.255.1
	TAYGA_IPV6_ADDR=fdaa:bb:1::1
	TAYGA_TUN_V6_ADDR=fdaa:bb:1::2
	NAT44_SERVICE=/etc/init.d/otbr-nat44
	WLAN_IFNAMES=eth0

	# Currently solution was verified only on raspbian and ubuntu.
	#
	#without NAT64 \|\| test $PLATFORM = ubuntu \|\| test $PLATFORM = raspbian \|\| die "nat64 is not tested under $PLATFORM."

	nat64_install()
	{
	with NAT64 \|\| return 0

	test -f $TAYGA_DEFAULT -a -f $TAYGA_CONF \|\| die 'Cannot find tayga configuration file!'
	sudo sed -i 's/^RUN="no"/RUN="yes"/' $TAYGA_DEFAULT
	sudo sed -i 's/^IPV4_TUN_ADDR=""/IPV4_TUN_ADDR="'$TAYGA_IPV4_ADDR'"/' $TAYGA_DEFAULT
	sudo sed -i 's/^IPV6_TUN_ADDR=""/IPV6_TUN_ADDR="'$TAYGA_TUN_V6_ADDR'"/' $TAYGA_DEFAULT
	sudo sed -i 's/^prefix /##prefix /' $TAYGA_CONF
	sudo sed -i 's/^# prefix 64:ff9b::\/96/prefix 64:ff9b::\/96/' $TAYGA_CONF
	sudo sed -i '/^#ipv6-addr/a ipv6-addr '$TAYGA_IPV6_ADDR $TAYGA_CONF
	sudo tee $NAT44_SERVICE <<EOF
	#! /bin/sh
	#
	# Copyright (c) 2017, The OpenThread Authors.
	# All rights reserved.
	#
	# Redistribution and use in source and binary forms, with or without
	# modification, are permitted provided that the following conditions are met:
	# 1. Redistributions of source code must retain the above copyright
	# notice, this list of conditions and the following disclaimer.
	# 2. Redistributions in binary form must reproduce the above copyright
	# notice, this list of conditions and the following disclaimer in the
	# documentation and/or other materials provided with the distribution.
	# 3. Neither the name of the copyright holder nor the
	# names of its contributors may be used to endorse or promote products
	# derived from this software without specific prior written permission.
	#
	# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
	# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	# POSSIBILITY OF SUCH DAMAGE.
	#
	### BEGIN INIT INFO
	# Provides: otbr-nat44
	# Required-Start: tayga
	# Required-Stop:
	# Should-Start:
	# Should-Stop:
	# Default-Start: 2 3 4 5
	# Default-Stop:
	# Short-Description: iptables NAT44
	# Description: NAT44 is require for OpenThread border router
	# to connect to arbitrary IPv4 endpoints.
	### END INIT INFO

	. /lib/lsb/init-functions
	. /lib/init/vars.sh

	case "\$1" in
	start)
	EOF
	for IFNAME in "$WLAN_IFNAMES"; do
	echo " iptables -t nat -A POSTROUTING -o $IFNAME -j MASQUERADE" \| sudo tee -a $NAT44_SERVICE
	done
	sudo tee -a $NAT44_SERVICE <<EOF
	;;
	restart\|reload\|force-reload)
	echo "Error: argument '\$1' not supported" >&2
	exit 3
	;;
	stop\|status)
	# No-op
	;;
	*)
	echo "Usage: \$0 start\|stop" >&2
	exit 3
	;;
	esac
	EOF
	sudo chmod a+x $NAT44_SERVICE
	if have systemctl; then
	sudo systemctl stop tayga \|\| die 'Unable to stop tayga service!'
	sudo systemctl enable otbr-nat44 \|\| die 'Unable to enable nat44 service!'
	fi
	}

	nat64_uninstall()
	{
	with NAT64 \|\| return 0

	nat64_stop
	sudo sed -i 's/^RUN="yes"/RUN="no"/' $TAYGA_DEFAULT
	sudo sed -i 's/^IPV4_TUN_ADDR="'$TAYGA_IPV4_ADDR'"/IPV4_TUN_ADDR=""/' $TAYGA_DEFAULT
	sudo sed -i 's/^prefix 64:ff9b::\/96/# prefix 64:ff9b::\/96/' $TAYGA_CONF
	sudo sed -i 's/^##prefix /prefix /' $TAYGA_CONF
	sudo sed -i '/^ipv6-addr '$TAYGA_IPV6_ADDR'/d' $TAYGA_CONF

	if have systemctl; then
	sudo systemctl disable otbr-nat44 \|\| true
	fi

	# systemctl disable doesn't remove sym-links
	if have update-rc.d; then
	sudo update-rc.d otbr-nat44 remove \|\| true
	fi
	test ! -f $NAT44_SERVICE \|\| sudo rm $NAT44_SERVICE
	}

	nat64_start()
	{
	with NAT64 \|\| return 0

	if [ -f /.dockerenv ]; then
	service tayga start \|\| die 'Failed to start tayga'
	elif have systemctl; then
	sudo systemctl start tayga \|\| die 'Failed to start tayga!'
	sudo systemctl start otbr-nat44 \|\| die 'Failed to start NAT44!'
	fi
	}

	nat64_stop()
	{
	with NAT64 \|\| return 0

	if [ -f /.dockerenv ]; then
	service tayga stop \|\| true
	elif have systemctl; then
	sudo systemctl stop tayga \|\| true
	sudo systemctl stop otbr-nat44 \|\| true
	fi
	}