193 lines
5.5 KiB
Bash
Executable File
193 lines
5.5 KiB
Bash
Executable File
#!/bin/bash
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SOURCE=${BASH_SOURCE[0]}
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while [ -L "$SOURCE" ]; do
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DIR=$(cd -P "$(dirname "$SOURCE")" >/dev/null 2>&1 && pwd)
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SOURCE=$(readlink "$SOURCE")
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[[ $SOURCE != /* ]] && SOURCE=$DIR/$SOURCE
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done
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DIR=$(cd -P "$(dirname "$SOURCE")" >/dev/null 2>&1 && pwd)
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if [[ -f "$DIR/../../config/arp-config.sh" ]]; then
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. "$DIR/../../config/arp-config.sh"
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else
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echo "$DIR/../../config/arp-config.sh missing!"
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exit 1
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fi
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if [ "$(id -u)" -ne 0 ]; then
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echo 'This script must be run as root.' >&2
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exit 1
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fi
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# ==============================================================================
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# Setup
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echo -e "# PREPARE ENVIRONMENT #"
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# Reset interfaces
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iptables -X
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iptables -F
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iptables -t nat -X
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iptables -t nat -F
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echo "Erased all iptables rules."
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ifconfig $WLAN_IFACE down
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ifconfig $WLAN_IFACE hw ether $(ethtool -P $WLAN_IFACE | awk '{print $3}')
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ifconfig $WLAN_IFACE up
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echo "Reset the $WLAN_IFACE WiFi interface."
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while true; do
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WLAN_IFACE_IP=$(ip -4 -br addr show $WLAN_IFACE | grep -Po "\\d+\\.\\d+\\.\\d+\\.\\d+")
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if [ -n "${WLAN_IFACE_IP}" ]; then
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echo "Got it!"
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break
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fi
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echo "Waiting for $WLAN_IFACE to get an IP..."
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sleep 5
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done
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# We only need to get the $WLAN_IFACE IP address and will copy it over to $ETH_IFACE later
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WLAN_NETMASK=$(ip addr show $WLAN_IFACE | grep -w inet | awk '{print $2}' | cut -d'/' -f2)
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WLAN_NETMASK_CIDR=$(ip addr show $WLAN_IFACE | grep -w inet | awk '{print $2}' | cut -d'/' -f2)
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if $NON_INTERACTIVE; then
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NON_INTERACTIVE_APT="-y"
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else
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NON_INTERACTIVE_APT=""
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fi
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# ==============================================================================
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# Install stuff
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echo -e "\n# INSTALL THINGS #"
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echo -e "Upgrading...\n"
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apt-get update
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apt-get upgrade $NON_INTERACTIVE_APT
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echo -e "\n"
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THINGS_TO_INSTALL="net-tools ethtool openssh-server parprouted dhcp-helper"
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if ! $NON_INTERACTIVE; then
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echo "Going to install: $THINGS_TO_INSTALL"
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read -p "Press ENTER to continue or CTRL+C to cancel..."
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fi
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echo -e "\n"
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apt-get install $NON_INTERACTIVE_APT $THINGS_TO_INSTALL
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if ! $NON_INTERACTIVE; then
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echo -e "\nGoing to replace networking with systemd-networkd."
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read -p "Press ENTER to continue or CTRL+C to cancel..."
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fi
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systemctl stop dhcp-helper
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apt-get autoremove --purge $NON_INTERACTIVE_APT ifupdown dhcpcd5 isc-dhcp-client isc-dhcp-common
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echo -e "\n\nConnecting to WiFi..."
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WPA_SUPP_FILE="/etc/wpa_supplicant/wpa_supplicant-$WLAN_IFACE.conf"
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cat >"$WPA_SUPP_FILE" <<EOF
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ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
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update_config=1
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country=USifconfig $WLAN_IFACE
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network={
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ssid="$WIFI_SSID"
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scan_ssid=1
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key_mgmt=WPA-EAP
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eap=PEAP
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identity="$WIFI_USERNAME"
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password="$WIFI_PWD"
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phase1="peaplabel=0"
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phase2="auth=MSCHAPV2"
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}
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EOF
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chmod 600 "$WPA_SUPP_FILE"
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echo "Created wpa_supplicant: $WPA_SUPP_FILE"
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systemctl disable wpa_supplicant.service
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systemctl stop wpa_supplicant.service
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systemctl enable --now wpa_supplicant@$WLAN_IFACE.service
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systemctl status --no-pager wpa_supplicant@$WLAN_IFACE.service
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echo ""
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ifconfig $WLAN_IFACE
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echo -e "\n"
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NET_CONF_FILE="/etc/systemd/network/08-$WLAN_IFACE.network"
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cat >"$NET_CONF_FILE" <<EOF
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[Match]
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Name=$WLAN_IFACE
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[Network]
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IPForward=yes
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DHCP=yes
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EOF
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echo "Created network config for the $WLAN_IFACE WiFi interface."
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echo -e "Finishing systemd-networkd install...\n"
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apt-get install $NON_INTERACTIVE_APT libnss-resolve
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ln -sf /run/systemd/resolve/stub-resolv.conf /etc/resolv.conf
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systemctl enable --now systemd-resolved.service
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systemctl restart systemd-networkd.service
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sed -i'' 's/#net.ipv4.ip_forward=1/net.ipv4.ip_forward=1/' /etc/sysctl.conf
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sysctl -p /etc/sysctl.conf
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echo "Set net.ipv4.ip_forward=1 in /etc/sysctl.conf"
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# ==============================================================================
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# Configure
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# Configure dhcp-helper.
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DHCP_IPS=""
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for ip in $DHCP_SERVERS; do
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DHCP_IPS+=" -s $ip"
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done
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cat > /etc/default/dhcp-helper <<EOF
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DHCPHELPER_OPTS="$DHCP_IPS"
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EOF
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# Enable avahi reflector if it's not already enabled.
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sed -i'' 's/#enable-reflector=no/enable-reflector=yes/' /etc/avahi/avahi-daemon.conf
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grep '^enable-reflector=yes$' /etc/avahi/avahi-daemon.conf || {
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printf "something went wrong...\n\n"
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printf "Manually set 'enable-reflector=yes in /etc/avahi/avahi-daemon.conf'\n"
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}
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cat > /etc/systemd/system/parprouted.service <<EOF
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[Unit]
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Description=proxy arp routing service
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Documentation=https://raspberrypi.stackexchange.com/q/88954/79866
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#Requires=sys-subsystem-net-devices-$WLAN_IFACE.device dhcpcd.service
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#After=sys-subsystem-net-devices-$WLAN_IFACE.device dhcpcd.service
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After=network.target
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[Service]
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Type=forking
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# Restart until $WLAN_IFACE gained carrier
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Restart=on-failure
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RestartSec=5
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TimeoutStartSec=30
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# clone the dhcp-allocated IP to $ETH_IFACE so dhcp-helper will relay for the correct subnet
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ExecStartPre=/bin/bash -c '/sbin/ip addr add \$(/sbin/ip -4 -br addr show $WLAN_IFACE | /bin/grep -Po "\\\d+\\\.\\\d+\\\.\\\d+\\\.\\\d+")/32 dev $ETH_IFACE'
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ExecStartPre=/sbin/ip link set dev $ETH_IFACE up
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ExecStartPre=/sbin/ip link set $WLAN_IFACE promisc on
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ExecStart=-/usr/sbin/parprouted $ETH_IFACE $WLAN_IFACE
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ExecStopPost=/sbin/ip link set $WLAN_IFACE promisc off
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ExecStopPost=/sbin/ip link set dev $ETH_IFACE down
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ExecStopPost=/bin/bash -c '/sbin/ip addr del \$(/sbin/ip -4 -br addr show $WLAN_IFACE | /bin/grep -Po "\\\d+\\\.\\\d+\\\.\\\d+\\\.\\\d+")/32 dev $ETH_IFACE'
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[Install]
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WantedBy=wpa_supplicant.service
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EOF
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systemctl daemon-reload
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systemctl enable --now parprouted dhcp-helper
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systemctl restart parprouted dhcp-helper
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systemctl status --no-pager dhcp-helper
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systemctl status --no-pager parprouted
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echo -e "\n==============\nDone!\nNow reboot!"
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