mosdns

#!/bin/sh
#
# $FreeBSD$
#

# PROVIDE: mosdns
# REQUIRE: LOGIN FILESYSTEMS
# KEYWORD: shutdown

. /etc/rc.subr

name="mosdns"
desc="mosdns daemon"
rcvar="mosdns_enable"

pidfile="/var/run/mosdns.pid"
procname="/usr/bin/mosdns"

# Set some default values for your application
load_rc_config $name
: ${mosdns_enable=NO}
: ${mosdns_restart=YES}
: ${mosdns_command="/usr/bin/mosdns start"}
: ${mosdns_flags="-c /usr/local/etc/mosdns/config.yml"}

# command="/usr/bin/mosdns"
# command_args="start -c /usr/local/etc/mosdns/config.yml"
command="/usr/sbin/daemon"
command_args="-P ${pidfile} -u root -r -f ${mosdns_command} ${mosdns_flags}"

start_cmd="mosdns_start"
stop_cmd="mosdns_stop"
status_cmd="mosdns_status"

check_pidfile() {
    if [ -e "$pidfile" ]; then
        pid=$(cat "$pidfile")
        if [ -n "$pid" ] && kill -0 "$pid" 2>/dev/null; then
            return 0  # The process is running
        else
            return 1  # The pidfile is stale
        fi
    else
        return 2  # The pidfile does not exist
    fi
}

mosdns_start() {
    check_pidfile
    case $? in
        0)
            echo "mosdns is already running with PID $(cat $pidfile)."
            ;;
        1)
            echo "Stale pidfile found. Removing it."
            rm -f "$pidfile"
            ;;
        2)
            echo "Starting mosdns..."
            cd /usr/local/etc/mosdns
            touch cache.dump
            chown nobody:nogroup cache.dump
            chmod 0755 cache.dump
            ${command} ${command_args} &
            ;;
    esac
}

mosdns_stop() {
    check_pidfile
    case $? in
        0)
            echo "Stopping mosdns..."
            kill -TERM $(cat $pidfile)
            rm -f "$pidfile"
            rm -f /usr/local/etc/mosdns/cache.dump
            echo "" > /var/log/mosdns.log
            ;;
        1)
            echo "Stale pidfile found. Removing it."
            rm -f "$pidfile"
            ;;
        2)
            echo "mosdns is not running."
            ;;
    esac
}

mosdns_status() {
    echo "Checking mosdns status..."
    echo "PID File: $pidfile"

    if [ -e "$pidfile" ]; then
        pid=$(cat "$pidfile")
        if [ -n "$pid" ] && kill -0 "$pid" 2>/dev/null; then
            echo "mosdns is running with PID $pid."
        else
            echo "mosdns is not running, but the PID file exists. Cleaning up stale PID file."
            rm -f "$pidfile"
        fi
    else
        echo "mosdns is not running."
    fi
}

run_rc_command "$1"