# Copyright 1999-2010 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/mail-filter/MailScanner/MailScanner-4.79.11.1.ebuild,v 1.1 2010/03/16 18:42:05 patrick Exp $

EAPI=6

inherit eutils versionator

MY_PV=$(get_version_component_range 1-3 )
MY_PVR=$(replace_version_separator 3 '-' )

DESCRIPTION="Free Anti-Virus and Anti-Spam Filter"
HOMEPAGE="http://www.mailscanner.info/"
SRC_URI="https://raw.githubusercontent.com/${PN}/v5/master/builds/${PN}-${MY_PVR}.nix.tar.gz"
RESTRICT="mirror"

LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~amd64 ~x86"
IUSE="clamav doc exim postfix spamassassin +cron"

DEPEND="dev-lang/perl"
RDEPEND="${DEPEND}
	dev-perl/Archive-Zip
	virtual/perl-IO-Compress
	dev-perl/Convert-BinHex
	dev-perl/Convert-TNEF
	dev-perl/DBD-SQLite
	dev-perl/DBI
	dev-perl/Filesys-Df
	>=dev-perl/HTML-Parser-3.45
	dev-perl/HTML-Tagset
	dev-perl/IO-stringy
	>=dev-perl/MIME-tools-5.417
	dev-perl/MailTools
	dev-perl/Net-CIDR
	dev-perl/Net-DNS
	dev-perl/OLE-StorageLite
	dev-perl/Sys-Hostname-Long
	dev-perl/Sys-SigAction
	dev-perl/TimeDate
	>=net-mail/tnef-1.4.3
	virtual/perl-File-Spec
	virtual/perl-File-Temp
	virtual/perl-Getopt-Long
	>=virtual/perl-Sys-Syslog-0.18
	>=virtual/perl-MIME-Base64-3.05
	cron? ( virtual/cron )
	postfix? ( mail-mta/postfix )
	exim? ( !postfix? ( mail-mta/exim ) )
	!postfix? ( !exim? ( mail-mta/sendmail ) )
	clamav? ( >=app-antivirus/clamav-0.88.4 )
	spamassassin? ( >=mail-filter/spamassassin-3.1.5 )"

S="${WORKDIR}/${PN}-${MY_PV}"

PATCHES=(
	"${FILESDIR}"/${PN}-5.0.3.7-ms-check-gentoo.patch
)

src_prepare() {
	default

	# setup MTA
	if use postfix ; then
		RUNASUSER='postfix'
		RUNASGROUP='postfix'
		INQUEUE='/var/spool/postfix.in/deferred'
		OUTQUEUE='/var/spool/postfix/incoming'
		MTA='postfix'
		SENDMAIL='/usr/lib/sendmail'
		SENDMAIL2='/usr/lib/sendmail'
	elif use exim ; then
		RUNASUSER='mail'
		RUNASGROUP='mail'
		INQUEUE='/var/spool/exim.in/input'
		OUTQUEUE='/var/spool/exim/input'
		MTA='exim'
		SENDMAIL='/usr/sbin/exim -oMr MailScanner'
		SENDMAIL2='/usr/sbin/exim -C /etc/exim/exim_out.conf -oMr MailScanner'
	else
	#	use sendmail as default, but we should add more as needed
	#	RUNASUSER='mail'
	#	RUNASGROUP='mail'
		INQUEUE='/var/spool/mqueue.in'
		OUTQUEUE='/var/spool/mqueue'
		MTA='sendmail'
		SENDMAIL='/usr/sbin/sendmail'
		SENDMAIL2='/usr/sbin/sendmail'
	fi

	# setup virus scanner(s)
	VIRUS_SCANNING="yes"
	VIRUS_SCANNERS=""
	use clamav && VIRUS_SCANNERS="clamav ${VIRUS_SCANNERS}"

	if [ -z "$VIRUS_SCANNERS" ]; then
		VIRUS_SCANNERS="none"
		VIRUS_SCANNING="no"
	fi

	# setup spamassassin
	USE_SA="no"
	use spamassassin && USE_SA="yes"

	# Determine some things that may need to be changed in conf file
	# (need to arrive at sensible replacement for yoursite)
	YOURSITE=`dnsdomainname | sed -e "s/\./-/g"`

	# ClamAV requires some specific changes to MailScanner.conf
	# when mailscanner is running as root (i.e. sendmail)
	WORKGRP=""
	WORKPERM="0600"
	if use clamav && [ "$MTA" == "sendmail" ] ; then
		WORKGRP="clamav"
		WORKPERM="0640"
	fi

	# update conf files
	sed -i \
		-e "s#^\(PID file[ \t]*=\).*#\1 /run/MailScanner.pid#" \
		-e "s#^\(Run As User[ \t]*=\).*#\1 $RUNASUSER#" \
		-e "s#^\(Run As Group[ \t]*=\).*#\1 $RUNASGROUP#" \
		-e "s#^\(Incoming Queue Dir[ \t]*=\).*#\1 $INQUEUE#" \
		-e "s#^\(Outgoing Queue Dir[ \t]*=\).*#\1 $OUTQUEUE#" \
		-e "s#^\(MTA[ \t]*=\).*#\1 $MTA#" \
		-e "s/^#\(TNEF.*internal\)$/\1/" \
		-e "s/^\(TNEF.*0000\)$/#\1/" \
		-e "s#^\(%org-name%\)[ \t]*=.*#\1 = ${YOURSITE}#" \
		-e "s#^\(Sendmail[ \t]*=\).*#\1 ${SENDMAIL}#" \
		-e "s#^\(Sendmail2[ \t]*=\).*#\1 ${SENDMAIL2}#" \
		-e "s#^\(Incoming Work Group[ \t]*=\).*#\1 ${WORKGRP}#" \
		-e "s#^\(Incoming Work Permissions[ \t]*=\).*#\1 ${WORKPERM}#" \
		-e "s/^\(Virus Scanning[ \t]*=\).*/\1 ${VIRUS_SCANNING}/" \
		-e "s/^\(Virus Scanners[ \t]*=\).*/\1 ${VIRUS_SCANNERS}/" \
		-e "s/^\(Use SpamAssassin[ \t]*=\).*$/\1 ${USE_SA}/" \
		etc/MailScanner/MailScanner.conf

	sed -i \
		-e "s#YOURDOMAIN-COM#${YOURSITE}#" \
		-e "s#yoursite#${YOURSITE}#" \
		etc/MailScanner/spamassassin.conf

	# net-mail/clamav net-mail/f-prot package compatibility
	sed -i \
		-e 's#^\(clamav\t.*/usr\)/local$#\1#' \
		-e 's#^\(f-prot.*\)/usr/local/f-prot$#\1/opt/f-prot#' \
		etc/MailScanner/virus.scanners.conf

	# turn /etc/MailScanner/defaults into a conf.d
	mkdir -p etc/conf.d
	mv etc/MailScanner/defaults etc/conf.d/MailScanner

	for f in usr/lib/MailScanner/init/ms-init \
		usr/lib/MailScanner/wrapper/clamav-wrapper \
		usr/sbin/ms-clean-quarantine \
		usr/sbin/ms-check \
		usr/sbin/ms-msg-alert \
		usr/sbin/ms-update-vs \
		usr/sbin/ms-cron \
		etc/MailScanner/MailScanner.conf ; do
		sed -i -e "s,/etc/MailScanner/defaults,/etc/conf.d/MailScanner,g" "$f"
	done

	# clean and configure conf.d
	# - we do not have a /var/lock/subsys - move MailScanner.off to /run instead
	# - nothing is using the ms_re2c setting (ms-update-sa finds it on its own)
	# - ms_etc isn't used anywhere
	# - ms_core, ms_lib, ramdisk_* and run_mailscanner are only used by ms-init
	#   which we don't use
	sed -i \
		-e "/^stopped_lockfile=/s,=.*,=/run/MailScanner.off," \
		-e "/^# RE2C/,/^ms_re2c=/d" \
		-e "/^# Enable MailScanner Daemon/,/^run_mailscanner=/d" \
		-e "/^## RAMDISK Management/,/^ramdisk_store=/d" \
		-e "/^# The MailScanner etc directory/,/^ms_etc=/d" \
		-e "/^# The Mailscanner share directory/,/^ms_core=/d" \
		-e "/^# The MailScanner lib directory/,/^ms_lib=/d" \
		etc/conf.d/MailScanner

	# change restarts via ms-init after e.g. rules updates into reloads via
	# /etc/init.d/MailScanner
	# a.) reloads should be enough because they restart all children and the
	#     parent MailScanner doesn't do anything so doesn't need the update
	# b.) this way we'll never accidentally start MailScanner when it's
	#     supposed to be switched off without mucking about with
	#     $run_mailscanner and $stopped_lockfile
	for f in usr/sbin/ms-update-bad-emails \
		usr/sbin/ms-update-sa ; do
		sed -i -e "s,/usr/lib/MailScanner/init/ms-init[[:space:]]\\+restart,/etc/init.d/MailScanner reload,g" \
			"$f"
	done

	# create some simple cron wrappers
	for schedule in hourly daily weekly ; do
		mkdir -p etc/cron.${schedule}
		cat <<EOF >etc/cron.${schedule}/MailScanner
#!/bin/bash

/usr/sbin/ms-cron ${schedule/weekly/maint}
EOF
	done
}

src_install() {
	dosbin usr/sbin/*
	doconfd etc/conf.d/MailScanner
	newinitd "${FILESDIR}"/initd.mailscanner MailScanner

	insinto /etc
	doins -r etc/MailScanner

	exeinto /usr/lib/MailScanner/wrapper
	doexe usr/lib/MailScanner/wrapper/*

	exeinto /usr/lib/MailScanner/init
	doexe usr/lib/MailScanner/init/*

	insinto /usr/share
	doins -r usr/share/MailScanner

	if use cron ; then
		for schedule in hourly daily weekly ; do
			exeinto /etc/cron.${schedule}
			doexe etc/cron.${schedule}/MailScanner
		done
	fi

	dodoc INSTALL LICENSE README "${FILESDIR}"/README.Gentoo

	keepdir /var/spool/MailScanner/incoming
	keepdir /var/spool/MailScanner/quarantine
	keepdir /var/spool/MailScanner/spamassassin
	keepdir /var/spool/MailScanner/archive

	if use postfix || use exim ; then
		fowners -R $RUNASUSER:$RUNASGROUP /var/spool/MailScanner
	else
		keepdir /var/spool/mqueue.in
	fi

	use spamassassin && \
		dosym /etc/MailScanner/spamassassin.conf \
			/etc/mail/spamassassin/mailscanner.cf
}

pkg_postinst() {
	if use postfix; then
		elog "Note that postfix 2.4 now supports HOLD of messages"
		elog "and reinjection without second postfix instance"
		elog "Inbound path is now ${ROOT}var/spool/postfix/hold"
		elog
		elog "See http://mailscanner.info/postfix.html for details"
		elog "or check (english) gentoo-wiki.com page which has been updated"
	fi
}