#!/sbin/openrc-run

description="Custom IP Policy Route Rules for Alpine"

depend() {
    need net networking
    after net-online
    trigger on restart networking
}

trigger() {
    case "$1" in
        restart)
            ebegin "Triggered by networking restart, reloading IP policy rules"
            restart
            eend $?
            ;;
        *)
            ebegin "Unsupported trigger: $1"
            eend 1
            ;;
    esac
}

start() {
    ebegin "Loading custom IP policy rules"
    ip rule add from 44.32.191.0/24 to 0.0.0.0/0 lookup 102 priority 200
    ip rule add from 172.20.0.0/14 to 172.20.0.0/14 lookup 105 priority 300
    ip -6 rule add from 2000::/3 to 2000::/3 lookup 102 priority 200
    ip -6 rule add from fd00::/8 to fd00::/8 lookup 105 priority 300
    eend $? "Failed to load IP policy rules"
}

stop() {
    ebegin "Removing custom IP policy rules"
    ip rule del from 44.32.191.0/24 to 0.0.0.0/0 lookup 102 priority 200
    ip rule del from 172.20.0.0/14 to 172.20.0.0/14 lookup 105 priority 300
    ip -6 rule del from 2000::/3 to 2000::/3 lookup 102 priority 200
    ip -6 rule del from fd00::/8 to fd00::/8 lookup 105 priority 300
    eend $? "Failed to remove IP policy rules"
}

restart() {
    stop
    sleep 1
    start
}