186 lines
6.0 KiB
Bash
186 lines
6.0 KiB
Bash
#!/bin/bash
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# Forked from binhex's OpenVPN dockers
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DEBUG=false
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# Wait until tunnel is up
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while : ; do
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tunnelstat=$(netstat -ie | grep -E "tun|tap")
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if [[ ! -z "${tunnelstat}" ]]; then
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break
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else
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sleep 1
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fi
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done
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echo "[info] WebUI port defined as ${WEBUI_PORT}" | ts '%Y-%m-%d %H:%M:%.S'
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# strip whitespace from start and end of LAN_NETWORK
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export LAN_NETWORK=$(echo "${LAN_NETWORK}" | sed -e 's~^[ \t]*~~;s~[ \t]*$~~')
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echo "[info] LAN Network defined as ${LAN_NETWORK}" | ts '%Y-%m-%d %H:%M:%.S'
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# get default gateway of interfaces as looping through them
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DEFAULT_GATEWAY=$(ip -4 route list 0/0 | cut -d ' ' -f 3)
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echo "[info] Default gateway defined as ${DEFAULT_GATEWAY}" | ts '%Y-%m-%d %H:%M:%.S'
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#echo "[info] Adding ${LAN_NETWORK} as route via docker eth0" | ts '%Y-%m-%d %H:%M:%.S'
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ip route add "${LAN_NETWORK}" via "${DEFAULT_GATEWAY}" dev eth0
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echo "[info] ip route defined as follows..." | ts '%Y-%m-%d %H:%M:%.S'
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echo "--------------------"
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ip route
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echo "--------------------"
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# setup iptables marks to allow routing of defined ports via eth0
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###
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if [[ "${DEBUG}" == "true" ]]; then
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echo "[debug] Modules currently loaded for kernel" ; lsmod
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fi
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# check we have iptable_mangle, if so setup fwmark
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lsmod | grep iptable_mangle
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iptable_mangle_exit_code=$?
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if [[ $iptable_mangle_exit_code == 0 ]]; then
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echo "[info] iptable_mangle support detected, adding fwmark for tables" | ts '%Y-%m-%d %H:%M:%.S'
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# setup route for qbittorrent webui using set-mark to route traffic for port 8080 to eth0
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if [ -z "${WEBUI_PORT}" ]; then
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echo "8080 webui" >> /etc/iproute2/rt_tables
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else
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echo "${WEBUI_PORT} webui" >> /etc/iproute2/rt_tables
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fi
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ip rule add fwmark 1 table webui
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ip route add default via ${DEFAULT_GATEWAY} table webui
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fi
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# identify docker bridge interface name (probably eth0)
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docker_interface=$(netstat -ie | grep -vE "lo|tun|tap" | sed -n '1!p' | grep -P -o -m 1 '^[\w]+')
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if [[ "${DEBUG}" == "true" ]]; then
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echo "[debug] Docker interface defined as ${docker_interface}"
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fi
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# identify ip for docker bridge interface
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docker_ip=$(ifconfig "${docker_interface}" | grep -o "inet [0-9]*\.[0-9]*\.[0-9]*\.[0-9]*" | grep -o "[0-9]*\.[0-9]*\.[0-9]*\.[0-9]*")
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if [[ "${DEBUG}" == "true" ]]; then
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echo "[debug] Docker IP defined as ${docker_ip}"
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fi
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# identify netmask for docker bridge interface
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docker_mask=$(ifconfig "${docker_interface}" | grep -o "netmask [0-9]*\.[0-9]*\.[0-9]*\.[0-9]*" | grep -o "[0-9]*\.[0-9]*\.[0-9]*\.[0-9]*")
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if [[ "${DEBUG}" == "true" ]]; then
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echo "[debug] Docker netmask defined as ${docker_mask}"
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fi
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# convert netmask into cidr format
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docker_network_cidr=$(ipcalc "${docker_ip}" "${docker_mask}" | grep -P -o -m 1 "(?<=Network:)\s+[^\s]+" | sed -e 's~^[ \t]*~~;s~[ \t]*$~~')
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echo "[info] Docker network defined as ${docker_network_cidr}" | ts '%Y-%m-%d %H:%M:%.S'
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# input iptable rules
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###
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# set policy to drop ipv4 for input
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iptables -P INPUT DROP
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# set policy to drop ipv6 for input
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ip6tables -P INPUT DROP 1>&- 2>&-
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# accept input to tunnel adapter
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iptables -A INPUT -i "${VPN_DEVICE_TYPE}" -j ACCEPT
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# accept input to/from LANs (172.x range is internal dhcp)
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iptables -A INPUT -s "${docker_network_cidr}" -d "${docker_network_cidr}" -j ACCEPT
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# accept input to vpn gateway
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iptables -A INPUT -i eth0 -p $VPN_PROTOCOL --sport $VPN_PORT -j ACCEPT
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# accept input to qbittorrent webui port
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if [ -z "${WEBUI_PORT}" ]; then
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iptables -A INPUT -i eth0 -p tcp --dport 8080 -j ACCEPT
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iptables -A INPUT -i eth0 -p tcp --sport 8080 -j ACCEPT
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else
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iptables -A INPUT -i eth0 -p tcp --dport ${WEBUI_PORT} -j ACCEPT
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iptables -A INPUT -i eth0 -p tcp --sport ${WEBUI_PORT} -j ACCEPT
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fi
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# accept input to qbittorrent daemon port - used for lan access
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if [ -z "${INCOMING_PORT}" ]; then
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iptables -A INPUT -i eth0 -s "${LAN_NETWORK}" -p tcp --dport 8999 -j ACCEPT
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else
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iptables -A INPUT -i eth0 -s "${LAN_NETWORK}" -p tcp --dport ${INCOMING_PORT} -j ACCEPT
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fi
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# accept input icmp (ping)
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iptables -A INPUT -p icmp --icmp-type echo-reply -j ACCEPT
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# accept input to local loopback
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iptables -A INPUT -i lo -j ACCEPT
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# output iptable rules
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###
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# set policy to drop ipv4 for output
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iptables -P OUTPUT DROP
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# set policy to drop ipv6 for output
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ip6tables -P OUTPUT DROP 1>&- 2>&-
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# accept output from tunnel adapter
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iptables -A OUTPUT -o "${VPN_DEVICE_TYPE}" -j ACCEPT
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# accept output to/from LANs
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iptables -A OUTPUT -s "${docker_network_cidr}" -d "${docker_network_cidr}" -j ACCEPT
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# accept output from vpn gateway
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iptables -A OUTPUT -o eth0 -p $VPN_PROTOCOL --dport $VPN_PORT -j ACCEPT
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# if iptable mangle is available (kernel module) then use mark
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if [[ $iptable_mangle_exit_code == 0 ]]; then
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# accept output from qBittorrent webui port - used for external access
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if [ -z "${WEBUI_PORT}" ]; then
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iptables -t mangle -A OUTPUT -p tcp --dport 8080 -j MARK --set-mark 1
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iptables -t mangle -A OUTPUT -p tcp --sport 8080 -j MARK --set-mark 1
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else
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iptables -t mangle -A OUTPUT -p tcp --dport ${WEBUI_PORT} -j MARK --set-mark 1
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iptables -t mangle -A OUTPUT -p tcp --sport ${WEBUI_PORT} -j MARK --set-mark 1
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fi
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fi
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# accept output from qBittorrent webui port - used for lan access
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if [ -z "${WEBUI_PORT}" ]; then
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iptables -A OUTPUT -o eth0 -p tcp --dport 8080 -j ACCEPT
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iptables -A OUTPUT -o eth0 -p tcp --sport 8080 -j ACCEPT
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else
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iptables -A OUTPUT -o eth0 -p tcp --dport ${WEBUI_PORT} -j ACCEPT
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iptables -A OUTPUT -o eth0 -p tcp --sport ${WEBUI_PORT} -j ACCEPT
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fi
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# accept output to qBittorrent daemon port - used for lan access
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if [ -z "${INCOMING_PORT}" ]; then
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iptables -A OUTPUT -o eth0 -d "${LAN_NETWORK}" -p tcp --sport 8999 -j ACCEPT
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else
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echo "[info] Incoming connections port defined as ${INCOMING_PORT}" | ts '%Y-%m-%d %H:%M:%.S'
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iptables -A OUTPUT -o eth0 -d "${LAN_NETWORK}" -p tcp --sport ${INCOMING_PORT} -j ACCEPT
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fi
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# accept output for icmp (ping)
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iptables -A OUTPUT -p icmp --icmp-type echo-request -j ACCEPT
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# accept output from local loopback adapter
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iptables -A OUTPUT -o lo -j ACCEPT
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echo "[info] iptables defined as follows..." | ts '%Y-%m-%d %H:%M:%.S'
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echo "--------------------"
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iptables -S
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echo "--------------------"
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exec /bin/bash /etc/qbittorrent/start.sh
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