exim-4.94.2-r1.ebuild

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# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI="7"

inherit db-use toolchain-funcs multilib pam systemd

IUSE="arc +dane dcc +dkim dlfunc dmarc +dnsdb doc dovecot-sasl dsn elibc_glibc exiscan-acl gnutls idn ipv6 ldap lmtp maildir mbx mysql nis pam perl pkcs11 postgres +prdr proxy radius redis sasl selinux spf sqlite srs +srs-alt srs-native +ssl syslog tcpd +tpda X"
REQUIRED_USE="
	arc? ( dkim spf )
	dane? ( ssl !gnutls )
	dmarc? ( dkim spf )
	dkim? ( ssl !gnutls )
	gnutls? ( ssl )
	pkcs11? ( ssl )
	spf? ( exiscan-acl )
	srs? (
		exiscan-acl
		^^ ( srs-alt srs-native )
	)
"
# NOTE on USE="gnutls dane", gnutls[dane] is masked in base, unmasked
# for x86 and amd64 only, due to this, repoman won't allow depending on
# gnutls[dane] for all else.  Because we cannot express USE=dane when
# USE=gnutls is in effect only in package.use.mask, the only option we
# have left is to a) ignore the dependency (but that results in bug
# #661164) or b) mask the usage of USE=dane with USE=gnutls.  Both are
# incorrect, but b) is the only "correct" view from repoman.

SDIR=$([[ ${PV} == *_rc* ]]   && echo /test
	 [[ ${PV} == *.*.*.* ]] && echo /fixes)
COMM_URI="https://downloads.exim.org/exim4${SDIR}"

DESCRIPTION="A highly configurable, drop-in replacement for sendmail"
SRC_URI="${COMM_URI}/${P//_rc/-RC}.tar.xz
	mirror://gentoo/system_filter.exim.gz
	doc? ( ${COMM_URI}/${PN}-pdf-${PV//_rc/-RC}.tar.xz )"
HOMEPAGE="https://www.exim.org/"

SLOT="0"
LICENSE="GPL-2"
KEYWORDS="~alpha amd64 arm ~arm64 ~hppa ~ia64 ppc ppc64 sparc x86 ~x86-solaris"

COMMON_DEPEND=">=sys-apps/sed-4.0.5
	( >=sys-libs/db-3.2:= <sys-libs/db-6:= )
	dev-libs/libpcre
	idn? ( net-dns/libidn:= net-dns/libidn2:= )
	perl? ( dev-lang/perl:= )
	pam? ( sys-libs/pam )
	tcpd? ( sys-apps/tcp-wrappers )
	ssl? (
		gnutls? (
			net-libs/gnutls:0=[pkcs11?]
			dev-libs/libtasn1
		)
		!gnutls? (
			dev-libs/openssl:0=
		)
	)
	ldap? ( >=net-nds/openldap-2.0.7 )
	nis? (
		elibc_glibc? (
			net-libs/libtirpc
			>=net-libs/libnsl-1:=
		)
	)
	mysql? ( dev-db/mysql-connector-c:= )
	postgres? ( dev-db/postgresql:= )
	sasl? ( >=dev-libs/cyrus-sasl-2.1.26-r2 )
	redis? ( dev-libs/hiredis )
	spf? ( >=mail-filter/libspf2-1.2.5-r1 )
	dmarc? ( mail-filter/opendmarc:= )
	srs? ( srs-alt? ( mail-filter/libsrs_alt ) )
	X? (
		x11-libs/libX11
		x11-libs/libXmu
		x11-libs/libXt
		x11-libs/libXaw
	)
	sqlite? ( dev-db/sqlite )
	radius? ( net-dialup/freeradius-client )
	virtual/libiconv
	elibc_glibc? ( net-libs/libnsl )
	"
	# added X check for #57206
BDEPEND="virtual/pkgconfig"
DEPEND="${COMMON_DEPEND}"
RDEPEND="${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 )
	selinux? ( sec-policy/selinux-exim )
	"

S=${WORKDIR}/${P//_rc/-RC}

src_prepare() {
	# Legacy patches which need a respin for -p1
	eapply -p0 "${FILESDIR}"/exim-4.14-tail.patch
	eapply -p0 "${FILESDIR}"/exim-4.74-radius-db-ENV-clash.patch # 287426
	eapply     "${FILESDIR}"/exim-4.93-as-needed-ldflags.patch # 352265, 391279
	eapply -p0 "${FILESDIR}"/exim-4.76-crosscompile.patch # 266591
	eapply     "${FILESDIR}"/exim-4.69-r1.27021.patch
	eapply     "${FILESDIR}"/exim-4.94-localscan_dlopen.patch

	# for this reason we have a := dep on opendmarc, they changed their
	# API in a minor release
	if use dmarc && has_version ">=mail-filter/opendmarc-1.4" ; then
		eapply "${FILESDIR}"/exim-4.94-opendmarc-1.4.patch
	fi

	if use maildir ; then
		eapply "${FILESDIR}"/exim-4.94-maildir.patch
	else
		eapply -p0 "${FILESDIR}"/exim-4.80-spool-mail-group.patch # 438606
	fi

	eapply_user

	# 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() {
	# general config and paths

	local aliases="${EPREFIX}/etc/mail/aliases"
	sed -i \
		-e "/SYSTEM_ALIASES_FILE/s'SYSTEM_ALIASES_FILE'${aliases}'" \
		src/configure.default || die

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

	if use elibc_musl; then
		sed -i -e 's/^LIBS = -lnsl/LIBS =/g' OS/Makefile-Linux || die
	fi

	local conffile="${EPREFIX}/etc/exim/exim.conf"
	sed -e "48i\CFLAGS=${CFLAGS}" \
		-e "s:BIN_DIRECTORY=/usr/exim/bin:BIN_DIRECTORY=${EPREFIX}/usr/sbin:" \
		-e "s;EXIM_USER=;EXIM_USER=ref:${MAILUSER};" \
		-e "s:CONFIGURE_FILE=.*$:CONFIGURE_FILE=${conffile}:" \
		-e "s:ZCAT_COMMAND=.*$:ZCAT_COMMAND=${EPREFIX}/bin/zcat:" \
		-e "s:COMPRESS_COMMAND=.*$:COMPRESS_COMMAND=${EPREFIX}/bin/gzip:" \
		src/EDITME > Local/Makefile || die

	# work on Local/Makefile from now on
	cd Local

	cat >> Makefile <<- EOC
		INFO_DIRECTORY=${EPREFIX}/usr/share/info
		PID_FILE_PATH=${EPREFIX}/run/exim.pid
		SPOOL_DIRECTORY=${EPREFIX}/var/spool/exim
		HAVE_ICONV=yes
	EOC

	# if we use libiconv, now is the time to tell so
	if use !elibc_glibc && use !elibc_musl ; then
		cat >> Makefile <<- EOC
			EXTRALIBS_EXIM=-liconv
		EOC
	fi

	# support for IPv6
	if use ipv6; then
		cat >> Makefile <<- EOC
			HAVE_IPV6=YES
		EOC
	fi

	# support i18n/IDNA
	if use idn; then
		cat >> Makefile <<- EOC
			SUPPORT_I18N=yes
			SUPPORT_I18N_2008=yes
			EXTRALIBS_EXIM += -lidn -lidn2
		EOC
	fi

	#
	# mail storage formats
	#

	# mailstore is Exim's traditional storage format
	cat >> Makefile <<- EOC
		SUPPORT_MAILSTORE=yes
	EOC

	# mbox
	if use mbx; then
		cat >> Makefile <<- EOC
			SUPPORT_MBX=yes
		EOC
	fi

	# maildir
	if use maildir; then
		cat >> Makefile <<- EOC
			SUPPORT_MAILDIR=yes
		EOC
	fi

	#
	# lookup methods

	# use the "native" interfaces to the DBM and CDB libraries, support
	# passwd and directory lookups by default
	local DB_VERS="5.3 5.1 4.8 4.7 4.6 4.5 4.4 4.3 4.2 3.2"
	cat >> Makefile <<- EOC
		USE_DB=yes
		LOOKUP_CDB=yes
		LOOKUP_PASSWD=yes
		LOOKUP_DSEARCH=yes
		# keep include in CFLAGS because exim.h -> dbstuff.h -> db.h
		CFLAGS += -I$(db_includedir ${DB_VERS})
		DBMLIB = -l$(db_libname ${DB_VERS})
	EOC

	if ! use dnsdb; then
		# DNSDB lookup is enabled by default
		sed -i -e 's:^LOOKUP_DNSDB=yes:# LOOKUP_DNSDB=yes:' Makefile || die
	fi

	if use ldap; then
		cat >> Makefile <<- EOC
			LOOKUP_LDAP=yes
			LDAP_LIB_TYPE=OPENLDAP2
			LOOKUP_INCLUDE += -I"${EPREFIX}"/usr/include/ldap
			LOOKUP_LIBS += -lldap -llber
		EOC
	fi

	if use mysql; then
		cat >> Makefile <<- EOC
			LOOKUP_MYSQL=yes
			LOOKUP_INCLUDE += $(mysql_config --include)
			LOOKUP_LIBS += $(mysql_config --libs)
		EOC
	fi

	if use nis; then
		cat >> Makefile <<- EOC
			LOOKUP_NIS=yes
			LOOKUP_NISPLUS=yes
		EOC
		if use elibc_glibc ; then
			cat >> Makefile <<- EOC
				LOOKUP_INCLUDE += -I"${EPREFIX}"/usr/include/tirpc
				LOOKUP_LIBS += -lnsl
			EOC
		fi
	fi

	if use postgres; then
		cat >> Makefile <<- EOC
			LOOKUP_PGSQL=yes
			LOOKUP_INCLUDE += -I$(pg_config --includedir)
			LOOKUP_LIBS += -L$(pg_config --libdir) -lpq
		EOC
	fi

	if use sqlite; then
		cat >> Makefile <<- EOC
			LOOKUP_SQLITE=yes
			LOOKUP_SQLITE_PC=sqlite3
		EOC
	fi

	if use redis; then
		cat >> Makefile <<- EOC
			LOOKUP_REDIS=yes
			LOOKUP_LIBS += -lhiredis
		EOC
	fi

	# Exim monitor, enabled by default, controlled via X USE-flag,
	# disable if not requested, bug #46778
	if use X; then
		cp ../exim_monitor/EDITME eximon.conf || die
		cat >> Makefile <<- EOC
			EXIM_MONITOR=eximon.bin
		EOC
	fi

	#
	# features
	#

	# content scanning support
	if use exiscan-acl; then
		cat >> Makefile <<- EOC
			WITH_CONTENT_SCAN=yes
		EOC
	fi

	# DomainKeys Identified Mail, RFC4871
	if ! use dkim; then
		# DKIM is enabled by default
		cat >> Makefile <<- EOC
			DISABLE_DKIM=yes
		EOC
	fi

	# Per-Recipient-Data-Response
	if ! use prdr; then
		# PRDR is enabled by default
		cat >> Makefile <<- EOC
			DISABLE_PRDR=yes
		EOC
	fi

	# Transport post-delivery actions
	if use !tpda && use !dane; then
		# EVENT is enabled by default
		cat >> Makefile <<- EOC
			DISABLE_EVENT=yes
		EOC
	fi

	# log to syslog
	if use syslog; then
		local eximlog="${EPREFIX}/var/log/exim/exim_%s.log"
		sed -i \
			-e "s:LOG_FILE_PATH=${eximlog}:LOG_FILE_PATH=syslog:" \
			Makefile || die
		cat >> Makefile <<- EOC
			LOG_FILE_PATH=syslog
		EOC
	else
		cat >> Makefile <<- EOC
			LOG_FILE_PATH=${EPREFIX}/var/log/exim/exim_%s.log
		EOC
	fi

	# starttls support (ssl)
	if use ssl; then
		if use gnutls; then
			echo "USE_GNUTLS=yes" >> Makefile
			echo "USE_GNUTLS_PC=gnutls $(use dane && echo gnutls-dane)" \
				>> Makefile
			use pkcs11 || echo "AVOID_GNUTLS_PKCS11=yes" >> Makefile
		else
			echo "USE_OPENSSL=yes" >> Makefile
			echo "USE_OPENSSL_PC=openssl" >> Makefile
		fi
	else
		echo "DISABLE_TLS=yes" >> Makefile
	fi

	# TCP wrappers
	if use tcpd; then
		cat >> Makefile <<- EOC
			USE_TCP_WRAPPERS=yes
			EXTRALIBS_EXIM += -lwrap
		EOC
	fi

	# Light Mail Transport Protocol
	if use lmtp; then
		cat >> Makefile <<- EOC
			TRANSPORT_LMTP=yes
		EOC
	fi

	# embedded Perl
	if use perl; then
		cat >> Makefile <<- EOC
			EXIM_PERL=perl.o
		EOC
	fi

	# dlfunc
	if use dlfunc; then
		cat >> Makefile <<- EOC
			EXPAND_DLFUNC=yes
			HAVE_LOCAL_SCAN=yes
			DLOPEN_LOCAL_SCAN=yes
		EOC
	fi

	# Proxy Protocol
	if use proxy; then
		cat >> Makefile <<- EOC
			SUPPORT_PROXY=yes
		EOC
	fi

	# DANE
	if use !dane; then
		# DANE is enabled by default
		sed -i -e 's:^SUPPORT_DANE=yes:# SUPPORT_DANE=yes:' Makefile || die
	fi

	# DMARC
	if use dmarc; then
		cat >> Makefile <<- EOC
			SUPPORT_DMARC=yes
			EXTRALIBS_EXIM += -lopendmarc
		EOC
	fi

	# Sender Policy Framework
	if use spf; then
		cat >> Makefile <<- EOC
			SUPPORT_SPF=yes
			EXTRALIBS_EXIM += -lspf2
		EOC
	fi

	#
	# experimental features
	#

	# Authenticated Receive Chain
	if use arc; then
		echo "EXPERIMENTAL_ARC=yes">> Makefile
	fi

	# Distributed Checksum Clearinghouse
	if use dcc; then
		echo "EXPERIMENTAL_DCC=yes">> Makefile
	fi

	# Sender Rewriting Scheme
	if use srs; then
		# NOTE: we currently USE-default to srs-alt, because this is
		# what USE=srs used to be.  Eventually we want to rid ourselves
		# of this external implementation.
		if use srs-alt; then
			# historical default, from 4.95 this becomes
			# EXPERIMENTAL_SRS_ALT
			cat >> Makefile <<- EOC
				EXPERIMENTAL_SRS=yes
				EXTRALIBS_EXIM += -lsrs_alt
			EOC
		fi
		if use srs-native; then
			# this one becomes SUPPORT_SRS in 4.95
			cat >> Makefile <<- EOC
				EXPERIMENTAL_SRS_NATIVE=yes
			EOC
		fi
	fi

	# Delivery Sender Notifications extra information in fail message
	if use dsn; then
		cat >> Makefile <<- EOC
			EXPERIMENTAL_DSN_INFO=yes
		EOC
	fi

	#
	# authentication (SMTP AUTH)
	#

	# standard bits
	cat >> Makefile <<- EOC
		AUTH_SPA=yes
		AUTH_CRAM_MD5=yes
		AUTH_PLAINTEXT=yes
	EOC

	# Cyrus SASL
	if use sasl; then
		cat >> Makefile <<- EOC
			CYRUS_SASLAUTHD_SOCKET=${EPREFIX}/run/saslauthd/mux
			AUTH_CYRUS_SASL=yes
			AUTH_LIBS += -lsasl2
		EOC
	fi

	# Dovecot
	if use dovecot-sasl; then
		cat >> Makefile <<- EOC
			AUTH_DOVECOT=yes
		EOC
	fi

	# Pluggable Authentication Modules
	if use pam; then
		cat >> Makefile <<- EOC
			SUPPORT_PAM=yes
			AUTH_LIBS += -lpam
		EOC
	fi

	# Radius
	if use radius; then
		cat >> Makefile <<- EOC
			RADIUS_CONFIG_FILE=${EPREFIX}/etc/radiusclient/radiusclient.conf
			RADIUS_LIB_TYPE=RADIUSCLIENTNEW
			AUTH_LIBS += -lfreeradius-client
		EOC
	fi
}

src_compile() {
	emake CC="$(tc-getCC)" HOSTCC="$(tc-getBUILD_CC)" \
		AR="$(tc-getAR) cq" RANLIB="$(tc-getRANLIB)" FULLECHO=''
}

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

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

	for i in exicyclog exim_dbmbuild exim_dumpdb exim_fixdb exim_lock \
		exim_tidydb exinext exiwhat exigrep eximstats exiqsumm exiqgrep \
		convert4r3 convert4r4 exipick
	do
		dosbin $i
	done

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

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

	if use pam; then
		pamd_mimic system-auth exim auth account
	fi

	# 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 "${FILESDIR}"/exim.rc10 exim
	newconfd "${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'

	diropts -m 0750 -o ${MAILUSER} -g ${MAILGROUP}
	keepdir /var/log/${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"
		einfo "for using smtp auth."
		einfo "Please create ${EROOT}/etc/exim/exim.conf from"
		einfo "  ${EROOT}/etc/exim/exim.conf.dist."
	fi
	if use dmarc ; then
		einfo "DMARC support requires ${EROOT}/etc/exim/opendmarc.tlds"
		einfo "you can populate this file with the contents downloaded from"
		einfo "  https://publicsuffix.org/list/public_suffix_list.dat"
	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 srs ; then
		einfo "SRS support is experimental in this release of Exim"
		if use srs-alt; then
			elog "You are using libsrs_alt to implement SRS support."
			elog "In future release of Exim, the native SRS implementation"
			elog "(USE=srs-native) will become the default.  Please prepare"
			elog "your package.use or switch to USE=srs-native now."
		fi
	fi
	use dsn && einfo "extra information in fail DSN message is experimental"
	einfo
	elog "Note that this release contains a tainted variable check that"
	elog "is likely to break your configuration used with Exim 4.93 and before."
	elog "Please check your transports for occurences of \$local_part, and"
	elog "use a replacement like \$local_part_data where possible."
}

Thank you!