# Copyright 1999-2014 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/mail-mta/exim/exim-4.82-r1.ebuild,v 1.4 2014/03/04 21:22:02 naota Exp $

EAPI="5"

inherit eutils toolchain-funcs multilib pam systemd

IUSE="dcc +dkim dlfunc dmarc dnsdb doc dovecot-sasl dsn exiscan-acl gnutls ipv6 ldap lmtp maildir mbx mysql nis pam perl pkcs11 postgres prdr radius redis sasl selinux spf sqlite srs ssl syslog tcpd tpda X"
REQUIRED_USE="spf? ( exiscan-acl ) srs? ( exiscan-acl ) dmarc? ( spf dkim ) pkcs11? ( gnutls )"

DSN_EXIM_V=482  # local version patched by us
DSN_V=1_3
COMM_URI="ftp://ftp.exim.org/pub/exim/exim4$([[ ${PV} == *_rc* ]] && echo /test)"

DESCRIPTION="A highly configurable, drop-in replacement for sendmail"
SRC_URI="${COMM_URI}/${P//rc/RC}.tar.bz2
	mirror://gentoo/system_filter.exim.gz
	doc? ( ${COMM_URI}/${PN}-html-${PV//rc/RC}.tar.bz2 )"
	#dsn? ( mirror://sourceforge/eximdsn/eximdsn-patch-1.3/exim_${DSN_EXIM_V}_dsn_${DSN_V}.patch )
HOMEPAGE="http://www.exim.org/"

SLOT="0"
LICENSE="GPL-2"
KEYWORDS="~amd64 ~hppa ~x86-fbsd ~x86-solaris"

COMMON_DEPEND=">=sys-apps/sed-4.0.5
	>=sys-libs/db-3.2
	dev-libs/libpcre
	perl? ( sys-devel/libperl )
	pam? ( virtual/pam )
	tcpd? ( sys-apps/tcp-wrappers )
	ssl? ( dev-libs/openssl )
	gnutls? ( net-libs/gnutls[pkcs11?]
			  dev-libs/libtasn1 )
	ldap? ( >=net-nds/openldap-2.0.7 )
	mysql? ( virtual/mysql )
	postgres? ( dev-db/postgresql-base )
	sasl? ( >=dev-libs/cyrus-sasl-2.1.26-r2 )
	redis? ( dev-libs/hiredis )
	selinux? ( sec-policy/selinux-exim )
	spf? ( >=mail-filter/libspf2-1.2.5-r1 )
	dmarc? ( mail-filter/opendmarc )
	srs? ( mail-filter/libsrs_alt )
	X? ( x11-proto/xproto
		x11-libs/libX11
		x11-libs/libXmu
		x11-libs/libXt
		x11-libs/libXaw
	)
	sqlite? ( dev-db/sqlite )
	radius? ( net-dialup/radiusclient )
	virtual/libiconv
	"
	# added X check for #57206
DEPEND="${COMMON_DEPEND}
	virtual/pkgconfig"
RDEPEND="${COMMON_DEPEND}
	!mail-mta/courier
	!mail-mta/esmtp
	!mail-mta/mini-qmail
	!<mail-mta/msmtp-1.4.19-r1
	!>=mail-mta/msmtp-1.4.19-r1[mta]
	!mail-mta/netqmail
	!mail-mta/nullmailer
	!mail-mta/postfix
	!mail-mta/qmail-ldap
	!mail-mta/sendmail
	!mail-mta/opensmtpd
	!<mail-mta/ssmtp-2.64-r2
	!>=mail-mta/ssmtp-2.64-r2[mta]
	!net-mail/mailwrapper
	>=net-mail/mailbase-0.00-r5
	virtual/logger
	dcc? ( mail-filter/dcc )
	"

S=${WORKDIR}/${P//rc/RC}

src_prepare() {
	epatch "${FILESDIR}"/exim-4.14-tail.patch
	epatch "${FILESDIR}"/exim-4.74-localscan_dlopen.patch
	epatch "${FILESDIR}"/exim-4.69-r1.27021.patch
	epatch "${FILESDIR}"/exim-4.74-radius-db-ENV-clash.patch # 287426
	epatch "${FILESDIR}"/exim-4.82-makefile-freebsd.patch # 235785
	epatch "${FILESDIR}"/exim-4.77-as-needed-ldflags.patch # 352265, 391279
	epatch "${FILESDIR}"/exim-4.76-crosscompile.patch # 266591

	if use maildir ; then
		epatch "${FILESDIR}"/exim-4.20-maildir.patch
	else
		epatch "${FILESDIR}"/exim-4.80-spool-mail-group.patch # 438606
	fi

	if use dsn ; then
		epatch "${FILESDIR}"/exim_${DSN_EXIM_V}_dsn_${DSN_V}.patch
	fi

	# user Exim believes it should be
	MAILUSER=mail
	MAILGROUP=mail
	if use prefix && [[ ${EUID} != 0 ]] ; then
		MAILUSER=$(id -un)
		MAILGROUP=$(id -gn)
	fi
}

src_configure() {
	local myconf

	sed -i "/SYSTEM_ALIASES_FILE/ s'SYSTEM_ALIASES_FILE'${EPREFIX}/etc/mail/aliases'" "${S}"/src/configure.default
	cp "${S}"/src/configure.default "${S}"/src/configure.default.orig

	sed -i -e 's/^buildname=.*/buildname=exim-gentoo/g' Makefile

	sed -e "48i\CFLAGS=${CFLAGS}" \
		-e "s:BIN_DIRECTORY=/usr/exim/bin:BIN_DIRECTORY=${EPREFIX}/usr/sbin:" \
		-e "s:CONFIGURE_FILE=/usr/exim/configure:CONFIGURE_FILE=${EPREFIX}/etc/exim/exim.conf:" \
		-e "s:# INFO_DIRECTORY=/usr/local/info:INFO_DIRECTORY=${EPREFIX}/usr/share/info:" \
		-e "s:# LOG_FILE_PATH=/var/log/exim_%slog:LOG_FILE_PATH=${EPREFIX}/var/log/exim/exim_%s.log:" \
		-e "s:# PID_FILE_PATH=/var/lock/exim.pid:PID_FILE_PATH=${EPREFIX}/run/exim.pid:" \
		-e "s:# SPOOL_DIRECTORY=/var/spool/exim:SPOOL_DIRECTORY=${EPREFIX}/var/spool/exim:" \
		-e "s:# SUPPORT_MAILDIR=yes:SUPPORT_MAILDIR=yes:" \
		-e "s:# SUPPORT_MAILSTORE=yes:SUPPORT_MAILSTORE=yes:" \
		-e "s:EXIM_USER=:EXIM_USER=${MAILUSER}:" \
		-e "s:# AUTH_SPA=yes:AUTH_SPA=yes:" \
		-e "s:# AUTH_CRAM_MD5=yes:AUTH_CRAM_MD5=yes:" \
		-e "s:# AUTH_PLAINTEXT=yes:AUTH_PLAINTEXT=yes:" \
		-e "s:# LOOKUP_PASSWD=yes:LOOKUP_PASSWD=yes:" \
		-e "s:EXIM_MONITOR=eximon.bin:# EXIM_MONITOR=eximon.bin:" \
		-e "s:ZCAT_COMMAND=.*$:ZCAT_COMMAND=${EPREFIX}/bin/zcat:" \
		-e "s:COMPRESS_COMMAND=.*$:COMPRESS_COMMAND=${EPREFIX}/bin/gzip:" \
		src/EDITME > Local/Makefile

	cd Local

	# exiscan-acl is now integrated - enable it when use-flag set
	if use exiscan-acl; then
		sed -i "s:# WITH_CONTENT_SCAN=yes:WITH_CONTENT_SCAN=yes:" Makefile
		sed -i "s:# WITH_OLD_DEMIME=yes:WITH_OLD_DEMIME=yes:" Makefile
	fi

	if use spf; then
		myconf="${myconf} -lspf2"
		sed -i "s:# EXPERIMENTAL_SPF=yes:EXPERIMENTAL_SPF=yes:" Makefile
		mycflags="${mycflags} -DEXPERIMENTAL_SPF"
	fi
	if use dmarc; then
		myconf="${myconf} -lopendmarc"
		sed -i "s:# EXPERIMENTAL_DMARC=yes:EXPERIMENTAL_DMARC=yes:" Makefile
		mycflags="${mycflags} -DEXPERIMENTAL_DMARC"
	fi
	if use srs; then
		myconf="${myconf} -lsrs_alt"
		sed -i "s:# EXPERIMENTAL_SRS=yes:EXPERIMENTAL_SRS=yes:" Makefile
	fi

	# enable optional exim_monitor support via X use flag bug #46778
	if use X; then
		einfo "Configuring eximon"
		cp ../exim_monitor/EDITME eximon.conf
		sed -i "s:# EXIM_MONITOR=eximon.bin:EXIM_MONITOR=eximon.bin:" Makefile
	fi
	if use perl; then
		sed -i "s:# EXIM_PERL=perl.o:EXIM_PERL=perl.o:" Makefile
	fi
	# mbox useflag renamed, see bug #110741
	if use mbx; then
		sed -i "s:# SUPPORT_MBX=yes:SUPPORT_MBX=yes:" Makefile
	fi
	if use pam; then
		sed -i "s:# \(SUPPORT_PAM=yes\):\1:" Makefile
		myconf="${myconf} -lpam"
	fi
	if use sasl; then
		sed -i "s:# CYRUS_SASLAUTHD_SOCKET=${EPREFIX}/var/state/saslauthd/mux:CYRUS_SASLAUTHD_SOCKET=${EPREFIX}/run/saslauthd/mux:"  Makefile
		sed -i "s:# AUTH_CYRUS_SASL=yes:AUTH_CYRUS_SASL=yes:" Makefile
		myconf="${myconf} -lsasl2"
	fi
	if use tcpd; then
		sed -i "s:# \(USE_TCP_WRAPPERS=yes\):\1:" Makefile
		myconf="${myconf} -lwrap"
	fi
	if use lmtp; then
		sed -i "s:# TRANSPORT_LMTP=yes:TRANSPORT_LMTP=yes:" Makefile
	fi
	if use ipv6; then
		echo "HAVE_IPV6=YES" >> Makefile
		# to fix bug #41196
		echo "IPV6_USE_INET_PTON=yes" >> Makefile
	fi
	if use dovecot-sasl; then
		sed -i "s:# AUTH_DOVECOT=yes:AUTH_DOVECOT=yes:" Makefile
	fi
	if use radius; then
		myconf="${myconf} -lradiusclient"
		sed -i "s:# RADIUS_CONFIG_FILE=/etc/radiusclient/radiusclient.conf:RADIUS_CONFIG_FILE=${EPREFIX}/etc/radiusclient/radiusclient.conf:" Makefile
		sed -i "s:# RADIUS_LIB_TYPE=RADIUSCLIENT$:RADIUS_LIB_TYPE=RADIUSCLIENT:" Makefile
	fi
	echo "EXTRALIBS=${myconf}" >> Makefile

	# make iconv usage explicit
	echo "HAVE_ICONV=yes" >> Makefile
	# if we use libiconv, now is the time to tell so
	use !elibc_glibc && echo "EXTRALIBS_EXIM=-liconv" >> Makefile

	if use ssl; then
		echo "SUPPORT_TLS=yes" >> Makefile
		if use gnutls; then
			echo "USE_GNUTLS=yes" >> Makefile
			echo "USE_GNUTLS_PC=gnutls" >> Makefile
			use pkcs11 || echo "AVOID_GNUTLS_PKCS11=yes" >> Makefile
		else
			echo "USE_OPENSSL_PC=openssl" >> Makefile
		fi
	fi

	LOOKUP_INCLUDE=
	LOOKUP_LIBS=

	if use ldap; then
		sed -i \
			-e "s:# \(LOOKUP_LDAP=yes\):\1:" \
			-e "s:# \(LDAP_LIB_TYPE=OPENLDAP2\):\1:" Makefile
		LOOKUP_INCLUDE="-I${EROOT}usr/include/ldap"
		LOOKUP_LIBS="-lldap -llber"
	fi

	if use redis; then
		sed -i "s:# EXPERIMENTAL_REDIS=yes:EXPERIMENTAL_REDIS=yes:" Makefile
		LOOKUP_LIBS="$LOOKUP_LIBS -lhiredis"
	fi

	if use mysql; then
		sed -i "s:# LOOKUP_MYSQL=yes:LOOKUP_MYSQL=yes:" Makefile
		LOOKUP_INCLUDE="$LOOKUP_INCLUDE $(mysql_config --include)"
		LOOKUP_LIBS="$LOOKUP_LIBS $(mysql_config --libs)"
	fi

	if use postgres; then
		sed -i "s:# LOOKUP_PGSQL=yes:LOOKUP_PGSQL=yes:" Makefile
		LOOKUP_INCLUDE="$LOOKUP_INCLUDE -I$(pg_config --includedir)"
		LOOKUP_LIBS="$LOOKUP_LIBS -L$(pg_config --libdir) -lpq"
	fi

	if use sqlite; then
		echo "LOOKUP_SQLITE=yes" >> Makefile
		echo "LOOKUP_SQLITE_PC=sqlite3" >> Makefile
	fi

	if [[ -n ${LOOKUP_INCLUDE} ]]; then
		sed -i "s:# LOOKUP_INCLUDE=-I /usr/local/ldap/include -I /usr/local/mysql/include -I /usr/local/pgsql/include:LOOKUP_INCLUDE=$LOOKUP_INCLUDE:" \
			Makefile
	fi

	if [[ -n ${LOOKUP_LIBS} ]]; then
		sed -i "s:# LOOKUP_LIBS=-L/usr/local/lib -lldap -llber -lmysqlclient -lpq -lgds -lsqlite3:LOOKUP_LIBS=$LOOKUP_LIBS:" \
			Makefile
	fi

	sed -i "s:# LOOKUP_DSEARCH=yes:LOOKUP_DSEARCH=yes:" Makefile

	if use dnsdb; then
		sed -i "s:# LOOKUP_DNSDB=yes:LOOKUP_DNSDB=yes:" Makefile
	fi
	sed -i "s:# LOOKUP_CDB=yes:LOOKUP_CDB=yes:" Makefile

	if use nis; then
		sed -i -e "s:# LOOKUP_NIS=yes:LOOKUP_NIS=yes:" \
			-e "s:# LOOKUP_NISPLUS=yes:LOOKUP_NISPLUS=yes:" Makefile
	fi
	if use syslog; then
		sed -i "s:LOG_FILE_PATH=/var/log/exim/exim_%s.log:LOG_FILE_PATH=syslog:" Makefile
	fi
	if ! use dkim; then
		# DKIM is enabled by default. We have to explicitly disable it.
		echo "DISABLE_DKIM=yes">> Makefile
	fi
	if use dcc; then
		echo "EXPERIMENTAL_DCC=yes">> Makefile
	fi
	if use dsn; then
		sed -i -e "s:#define SUPPORT_DSN:define SUPPORT_DSN:" Makefile
	fi
	if use dlfunc; then
		sed -i -e "/^# EXPAND_DLFUNC=yes/s/^# //" Makefile
	fi
	if use prdr; then
		sed -i -e "s:# EXPERIMENTAL_PRDR=yes:EXPERIMENTAL_PRDR=yes:" Makefile
	fi
	if use tpda; then
		sed -i -e "s:# EXPERIMENTAL_TPDA=yes:EXPERIMENTAL_TPDA=yes:" Makefile
	fi

	# use the "native" interface to the DBM library
	echo "USE_DB=yes" >> Makefile
	echo "DBMLIB=-ldb" >> Makefile
}

src_compile() {
	emake -j1 CC="$(tc-getCC)" HOSTCC="$(tc-getCC $CBUILD)" \
		AR="$(tc-getAR) cq" RANLIB="$(tc-getRANLIB)" FULLECHO='' \
		|| die "make failed"
}

src_install () {
	cd "${S}"/build-exim-gentoo
	exeinto /usr/sbin
	doexe exim
	if use X; then
		doexe eximon.bin
		doexe eximon
	fi
	fperms 4755 /usr/sbin/exim

	dodir /usr/bin /usr/sbin /usr/lib

	dosym exim /usr/sbin/sendmail
	dosym exim /usr/sbin/rsmtp
	dosym exim /usr/sbin/rmail
	dosym /usr/sbin/exim /usr/bin/mailq
	dosym /usr/sbin/exim /usr/bin/newaliases
	dosym /usr/sbin/sendmail /usr/lib/sendmail

	exeinto /usr/sbin
	for i in exicyclog exim_dbmbuild exim_dumpdb exim_fixdb exim_lock \
		exim_tidydb exinext exiwhat exigrep eximstats exiqsumm exiqgrep \
		convert4r3 convert4r4 exipick
	do
		doexe $i
	done

	dodoc "${S}"/doc/*
	doman "${S}"/doc/exim.8
	use dsn && dodoc "${S}"/README.DSN
	use doc && dohtml -r "${WORKDIR}"/${PN}-html-${PV//rc/RC}/doc/html/spec_html/*

	# conf files
	insinto /etc/exim
	newins "${S}"/src/configure.default.orig exim.conf.dist
	if use exiscan-acl; then
		newins "${S}"/src/configure.default exim.conf.exiscan-acl
	fi
	doins "${WORKDIR}"/system_filter.exim
	doins "${FILESDIR}"/auth_conf.sub

	pamd_mimic system-auth exim auth account

	# headers, #436406
	if use dlfunc ; then
		# fixup includes so they actually can be found when including
		sed -i \
			-e '/#include "\(config\|store\|mytypes\).h"/s:"\(.\+\)":<exim/\1>:' \
			local_scan.h || die
		insinto /usr/include/exim
		doins {config,local_scan}.h ../src/{mytypes,store}.h
	fi

	insinto /etc/logrotate.d
	newins "${FILESDIR}/exim.logrotate" exim

	newinitd "${FILESDIR}"/exim.rc8 exim
	newconfd "${FILESDIR}"/exim.confd exim

	systemd_dounit "${FILESDIR}"/{exim.service,exim.socket,exim-submission.socket}
	systemd_newunit "${FILESDIR}"/exim_at.service 'exim@.service'
	systemd_newunit "${FILESDIR}"/exim-submission_at.service 'exim-submission@.service'

	DIROPTIONS="-m 0750 -o ${MAILUSER} -g ${MAILGROUP}"
	dodir /var/log/${PN}
}

pkg_postinst() {
	if [[ ! -f ${EROOT}etc/exim/exim.conf ]] ; then
		einfo "${EROOT}etc/exim/system_filter.exim is a sample system_filter."
		einfo "${EROOT}etc/exim/auth_conf.sub contains the configuration sub for using smtp auth."
		einfo "Please create ${EROOT}etc/exim/exim.conf from ${EROOT}etc/exim/exim.conf.dist."
	fi
	if use dcc ; then
		einfo "DCC support is experimental, you can find some limited"
		einfo "documentation at the bottom of this prerelease message:"
		einfo "http://article.gmane.org/gmane.mail.exim.devel/3579"
	fi
	if use dmarc ; then
		einfo "DMARC support is experimental.  See global settings to"
		einfo "configure DMARC, for usage see the documentation at "
		einfo "experimental-spec.txt."
	fi
	einfo "Exim maintains some db files under its spool directory that need"
	einfo "cleaning from time to time.  (${EROOT}var/spool/exim/db)"
	einfo "Please use the exim_tidydb tool as documented in the Exim manual:"
	einfo "http://www.exim.org/exim-html-current/doc/html/spec_html/ch-exim_utilities.html#SECThindatmai"
}