120 lines
3 KiB
Text
Executable file
120 lines
3 KiB
Text
Executable file
#!/sbin/openrc-run
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name="inet2"
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description="Sets up wireguard interfaces connected via the host's internet connection"
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extra_started_commands="reloadwg"
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run() {
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printf '$ \x1b[32;1m%s\x1b[0m\n' "$*"
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"$@"
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}
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step() {
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printf '\x1b[34;1m>> %s\x1b[0m\n' "$*"
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}
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getval() {
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/usr/local/bin/config.awk /run/inet2/inet2.conf "$@"
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}
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runscripts() {
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if [ -n "$(getval "interface $2" "$1")" ]; then
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step "Running $1 for $2"
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getval "interface $2" "$1" | while read -r line; do
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(eval "$line")
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done
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fi
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}
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start() {
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for file in /sys/class/net/*; do # Clear all wireguard interfaces
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type=$(cat "$file/type")
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if [ "$type" = "65534" ]; then
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ifname="$(basename $file)"
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ip link del "$ifname"
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fi
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done
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rm -rf /run/inet2/config 2>/dev/null
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rm -rf /run/inet2/wg 2>/dev/null
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cp /config/inet2.conf /run/inet2/inet2.conf
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mkdir /run/inet2/wg
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getval Loopback | while read -r addr; do
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run ip addr add "$addr" dev lo
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done
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getval interface | while read -r inter; do
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step "Generating config for $inter"
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run mkwgconfig.sh "$inter" /run/inet2/wg/"$inter"
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# create the wireguard interface *in the default namespace*
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step "Adding Wireguard interface $inter"
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run ip link add name "$inter" type wireguard
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# set up the new network from the config
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step "Setting Wireguard config for $inter"
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run wg setconf "$inter" /run/inet2/wg/"$inter"
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# the config doesn't actually add any addresses, do that here
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step "Adding host addresses for $inter"
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getval "interface $inter" Address | while read -r addr; do
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run ip addr add "$addr" dev "$inter"
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done
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runscripts PreUp "$inter"
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step "Bringing interface up"
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run ip link set dev "$inter" up
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getval "interface $inter" Route | while read -r line; do
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read -r route via addr2 < <(printf "%s" "$line")
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if [ "$via" = "via" ]; then
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run ip route add "$route" via "$addr2" dev "$inter"
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else
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run ip route add "$route" dev "$inter"
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fi
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done
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runscripts PostUp "$inter"
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done
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step "Done!"
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}
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stop() {
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if [ -f /run/inet2/inet2.conf ]; then
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getval Loopback | while read -r addr; do
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run ip addr del "$addr" dev lo
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done
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getval interface | while read -r inter; do
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runscripts PreDown "$inter"
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step "Bringing $inter down"
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run ip link del "$inter"
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runscripts PostDown "$inter"
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done
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rm -rf /run/inet2/inet2.conf
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fi
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}
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# just reloads the wireguard configs for existing interfaces
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# for if a peer's domain name resolves to a different ip address now
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# and it needs to be re-resolved without taking down the connection
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reloadwg() {
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if [ -f /run/inet2/inet2.conf ]; then
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getval interface | while read -r inter; do
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step "Generating config for $inter"
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run mkwgconfig.sh "$inter" /run/inet2/wg/"$inter" /config/inet2.conf
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step "Setting Wireguard config for $inter"
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run wg setconf "$inter" /run/inet2/wg/"$inter"
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done
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fi
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}
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