#!/bin/sh /etc/rc.common
# Copyright (C) 2010-2017 OpenWrt.org

USE_PROCD=1
START=70

BIRD_BIN="/usr/sbin/bird"
BIRD_CONF="/etc/bird.conf"
BIRD_PID_FILE="/var/run/bird.pid"

start_service() {
    mkdir -p /var/run

    set_include_path

    procd_open_instance
    procd_set_param command $BIRD_BIN -f -c $BIRD_CONF -P $BIRD_PID_FILE
    procd_set_param file "$BIRD_CONF"
    procd_set_param stdout 1
    procd_set_param stderr 1
    procd_set_param respawn
    procd_close_instance
}

reload_service() {
    set_include_path
    procd_send_signal fff-bird
}

set_include_path() {
    # Change include file path, so bird uses the correct configuration, depending on the configuration state:
    #  - If test mode is active (and /tmp/bird/fff exists), switch to the temporary configuration to be tested.
    #  - If new settings are applied or the old settings are restored after an unsuccessful test (and /tmp/bird/fff does not exist),
    #    switch back to the permanent configuration (/etc/bird/fff).

    mkdir -p /tmp/bird/include

    if [ -d /tmp/bird/fff ]; then
        echo 'include "/tmp/bird/fff/babelpeers/*.conf";' > /tmp/bird/include/babelpeers.conf
        echo 'include "/tmp/bird/fff/nat-filter.conf";'   > /tmp/bird/include/nat-filter.conf
    else
        echo 'include "/etc/bird/fff/babelpeers/*.conf";' > /tmp/bird/include/babelpeers.conf
        echo 'include "/etc/bird/fff/nat-filter.conf";'   > /tmp/bird/include/nat-filter.conf
    fi
}