OpenWrt – Rev 4

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#!/bin/sh /etc/rc.common
# Copyright (c) 2014 OpenWrt.org

START=80

USE_PROCD=1
PROG=/usr/sbin/umdns
IFACES=""

load_ifaces() {
        local network="$(uci get umdns.@umdns[-1].network)"
        for n in $network; do
                local device
                json_load "$(ifstatus $n)"
                json_get_var device l3_device
                echo -n "$device "
        done
}

reload_service() {
        json_init
        json_add_array interfaces
        for i in $(load_ifaces); do
                json_add_string "" "$i"
        done
        json_close_array

        ubus call umdns set_config "$(json_dump)"
}

start_service() {
        local network="$(uci get umdns.@umdns[-1].network)"

        procd_open_instance
        procd_set_param command "$PROG"
        procd_set_param seccomp /etc/seccomp/umdns.json
        procd_set_param respawn
        procd_open_trigger
        procd_add_config_trigger "config.change" "umdns" /etc/init.d/umdns reload
        for n in $network; do
                procd_add_interface_trigger "interface.*" $n /etc/init.d/umdns reload
        done
        procd_add_raw_trigger "instance.update" 5000 "/bin/ubus" "call" "umdns" "reload"
        procd_close_trigger
        [ "$(uci get umdns.@umdns[-1].jail)" = 1 ] && procd_add_jail umdns ubus log
        procd_close_instance
}

service_started() {
        ubus -t 10 wait_for umdns
        [ $? = 0 ] && reload_service
}