#!/bin/sh
#
# $FreeBSD: head/mail/opendkim/files/milter-opendkim.in 481909 2018-10-12 15:30:35Z uqs $
#

# PROVIDE: milter-opendkim
# REQUIRE: DAEMON
# BEFORE: mail
# KEYWORD: shutdown

# Define these milteropendkim_* variables in one of these files:
#	/etc/rc.conf
#	/etc/rc.conf.local
#	/etc/rc.conf.d/milteropendkim
#
# milteropendkim_enable (bool):   Set to "NO" by default.
#                             Set it to "YES" to enable dkim-milter
# milteropendkim_uid (str):       Set username to run milter.
# milteropendkim_gid (str):       Set group to run milter.
# milteropendkim_profiles (list): Set to "" by default.
#                             Define your profiles here.
# milteropendkim_cfgfile (str):   Configuration file. See opendkim.conf(5)
#
# milteropendkim_${profile}_* :   Variables per profile.
#                             Sockets must be different from each other.
#
# milteropendkim_socket_perms (str):
#                                 Permissions for local|unix socket.
#
#  all parameters below now can be set in opendkim.conf(5).
# milteropendkim_socket (str):    Path to the milter socket.
# milteropendkim_domain (str):    Domainpart of From: in mails to sign.
# milteropendkim_key (str):       Path to the private key file to sign with.
# milteropendkim_selector (str):  Selector to use when signing
# milteropendkim_alg (str):       Algorithm to use when signing
# milteropendkim_flags (str):     Flags passed to start command.

. /etc/rc.subr

name="milteropendkim"
rcvar=milteropendkim_enable

extra_commands="reload"
start_precmd="dkim_prepcmd"
start_postcmd="dkim_start_postcmd"
stop_postcmd="dkim_postcmd"
command="%%PREFIX%%/sbin/opendkim"
_piddir="/var/run/milteropendkim"
pidfile="${_piddir}/pid"
sig_reload="USR1"

load_rc_config $name

#
# DO NOT CHANGE THESE DEFAULT VALUES HERE
#
: ${milteropendkim_enable="NO"}
: ${milteropendkim_uid="mailnull"}
: ${milteropendkim_gid="mailnull"}
: ${milteropendkim_cfgfile="%%PREFIX%%/etc/mail/opendkim.conf"}
: ${milteropendkim_socket_perms="0755"}

# Options other than above can be set with $milteropendkim_flags.
# see dkim-milter documentation for detail.

if [ -n "$2" ]; then
    profile="$2"
    if [ "x${milteropendkim_profiles}" != "x" ]; then
	pidfile="${_piddir}/${profile}.pid"
	eval milteropendkim_enable="\${milteropendkim_${profile}_enable:-${milteropendkim_enable}}"
	eval milteropendkim_socket="\${milteropendkim_${profile}_socket:-}"
	eval milteropendkim_socket_perms="\${milteropendkim_${profile}_socket_perms:-}"
	if [ "x${milteropendkim_socket}" = "x" ];then
	    echo "You must define a socket (milteropendkim_${profile}_socket)"
	    exit 1
	fi
	eval milteropendkim_cfgfile="\${milteropendkim_${profile}_cfgfile:-${milteropendkim_cfgfile}}"
	eval milteropendkim_domain="\${milteropendkim_${profile}_domain:-${milteropendkim_domain}}"
	eval milteropendkim_key="\${milteropendkim_${profile}_key:-${milteropendkim_key}}"
	eval milteropendkim_selector="\${milteropendkim_${profile}_selector:-${milteropendkim_selector}}"
	eval milteropendkim_alg="\${milteropendkim_${profile}_alg:-${milteropendkim_alg}}"
	eval milteropendkim_flags="\${milteropendkim_${profile}_flags:-${milteropendkim_flags}}"
	if [ -f "${milteropendkim_cfgfile}" ];then
	    milteropendkim_cfgfile="-x ${milteropendkim_cfgfile}"
	else
	    milteropendkim_cfgfile=""
	fi
	if [ "x${milteropendkim_socket}" != "x" ];then
	    _socket_prefix="-p"
	fi
	if [ "x${milteropendkim_uid}" != "x" ];then
	    _uid_prefix="-u"
	    if [ "x${milteropendkim_gid}" != "x" ];then
		milteropendkim_uid=${milteropendkim_uid}:${milteropendkim_gid}
	    fi
	fi
	if [ "x${milteropendkim_domain}" != "x" ];then
	    milteropendkim_domain="-d ${milteropendkim_domain}"
	fi
	if [ "x${milteropendkim_key}" != "x" ];then
	    milteropendkim_key="-k ${milteropendkim_key}"
	fi
	if [ "x${milteropendkim_selector}" != "x" ];then
	    milteropendkim_selector="-s ${milteropendkim_selector}"
	fi
	if [ "x${milteropendkim_alg}" != "x" ];then
	    milteropendkim_alg="-S ${milteropendkim_alg}"
	fi
	command_args="-l ${_socket_prefix} ${milteropendkim_socket} ${_uid_prefix} ${milteropendkim_uid} -P ${pidfile} ${milteropendkim_cfgfile} ${milteropendkim_domain} ${milteropendkim_key} ${milteropendkim_selector} ${milteropendkim_alg}"
    else
	echo "$0: extra argument ignored"
    fi
else
    if [ "x${milteropendkim_profiles}" != "x" -a "x$1" != "x" ]; then
	if [ "x$1" != "xrestart" ]; then
	    for profile in ${milteropendkim_profiles}; do
		echo "===> milteropendkim profile: ${profile}"
		%%PREFIX%%/etc/rc.d/milter-opendkim $1 ${profile}
		retcode="$?"
		if [ "0${retcode}" -ne 0 ]; then
		    failed="${profile} (${retcode}) ${failed:-}"
		else
		    success="${profile} ${success:-}"
		fi
	    done
	    exit 0
	else
	    restart_precmd=""
	fi
    else
	if [ -f "${milteropendkim_cfgfile}" ];then
	    milteropendkim_cfgfile="-x ${milteropendkim_cfgfile}"
	else
	    milteropendkim_cfgfile=""
	fi
	if [ "x${milteropendkim_socket}" != "x" ];then
	    _socket_prefix="-p"
	fi
	if [ "x${milteropendkim_uid}" != "x" ];then
	    _uid_prefix="-u"
	    if [ "x${milteropendkim_gid}" != "x" ];then
		milteropendkim_uid=${milteropendkim_uid}:${milteropendkim_gid}
	    fi
	fi
	if [ "x${milteropendkim_domain}" != "x" ];then
	    milteropendkim_domain="-d ${milteropendkim_domain}"
	fi
	if [ "x${milteropendkim_key}" != "x" ];then
	    milteropendkim_key="-k ${milteropendkim_key}"
	fi
	if [ "x${milteropendkim_selector}" != "x" ];then
	    milteropendkim_selector="-s ${milteropendkim_selector}"
	fi
	if [ "x${milteropendkim_alg}" != "x" ];then
	    milteropendkim_alg="-S ${milteropendkim_alg}"
	fi
	command_args="-l ${_socket_prefix} ${milteropendkim_socket} ${_uid_prefix} ${milteropendkim_uid} -P ${pidfile} ${milteropendkim_cfgfile} ${milteropendkim_domain} ${milteropendkim_key} ${milteropendkim_selector} ${milteropendkim_alg}"
    fi
fi

dkim_prepcmd ()
{
    if [ -S ${milteropendkim_socket##local:} ] ; then
        rm -f ${milteropendkim_socket##local:}
    elif [ -S ${milteropendkim_socket##unix:} ] ; then
        rm -f ${milteropendkim_socket##unix:}
    fi
    if [ ! -d ${_piddir} ] ; then
	mkdir -p ${_piddir}
    fi
    if [ -n "${milteropendkim_uid}" ] ; then
	chown ${milteropendkim_uid} ${_piddir}
    fi
    if [ -n "${milteropendkim_gid}" ] ; then
       chgrp ${milteropendkim_gid} ${_piddir}
    fi
    chmod ${milteropendkim_socket_perms} ${_piddir}
}

dkim_start_postcmd ()
{
    if [ "x${milteropendkim_socket}" != "x" ] ; then
	# postcmd is executed too fast and socket is not created before checking...
	sleep 1
	if [ -S ${milteropendkim_socket##local:} ] ; then
	    chmod ${milteropendkim_socket_perms} ${milteropendkim_socket##local:}
	elif [ -S ${milteropendkim_socket##unix:} ] ; then
	    chmod ${milteropendkim_socket_perms} ${milteropendkim_socket##unix:}
	fi
    fi
}

dkim_postcmd()
{
    if [ "x${milteropendkim_socket}" != "x" ] ; then
	if [ -S ${milteropendkim_socket##local:} ] ; then
	    rm -f ${milteropendkim_socket##local:}
	elif [ -S ${milteropendkim_socket##unix:} ] ; then
	    rm -f ${milteropendkim_socket##unix:}
	fi
    fi
    # just if the directory is empty
    rmdir ${_piddir} > /dev/null 2>&1
}

run_rc_command "$1"