# Copyright 2008 Fernando J. Pereda
# Copyright 2013-2015 Johannes Nixdorf <mixi@exherbo.org>
# Distributed under the terms of the GNU General Public License v2
# Based in part upon 'postfix-2.5.1.ebuild' from Gentoo, which is:
#     Copyright 1999-2008 Gentoo Foundation

export_exlib_phases src_prepare src_configure src_install

require pam alternatives systemd-service

SUMMARY="Fast, easy to administer and secure mail transport agent"
HOMEPAGE="http://www.postfix.org"
DOWNLOADS="ftp://ftp.porcupine.org/mirrors/postfix-release/official/${PNV}.tar.gz"

REMOTE_IDS="freecode:${PN}"

UPSTREAM_DOCUMENTATION="${HOMEPAGE}/documentation.html [[ lang = en ]]"
UPSTREAM_RELEASE_NOTES="${HOMEPAGE}/announcements/${PNV}.html [[ lang = en ]]"

LICENCES="IPL-1.0"
SLOT="0"
MYOPTIONS="
    cyrus      [[ description = [ Support using Cyrus SASL for SASL support (SASL support using dovecot is built unconditionally) ] ]]
    ldap       [[ description = [ Support using LDAP as source for postfix lookup tables (see ${HOMEPAGE}/DATABASE_README.html) ] ]]
    mysql      [[ description = [ Support using a MySQL database as source for postfix lookup tables (see ${HOMEPAGE}/DATABASE_README.html) ] ]]
    postgresql [[ description = [ Support using a PostgreSQL database as source for postfix lookup tables (see ${HOMEPAGE}/DATABASE_README.html) ] ]]
    ssl        [[ description = [ Support making SSL connections to remote servers and clients ] ]]
    ssl? ( ( providers: libressl openssl ) [[ number-selected = exactly-one ]] )
"

DEPENDENCIES="
    build+run:
        dev-libs/pcre
        group/postdrop
        group/postfix
        sys-libs/db:=
        sys-libs/pam
        user/postfix
        cyrus? ( net-libs/cyrus-sasl )
        ldap? ( net-directory/openldap )
        mysql? (
            sys-libs/zlib
            virtual/mysql
        )
        postgresql? ( dev-db/postgresql )
        ssl? (
            providers:libressl? ( dev-libs/libressl:= )
            providers:openssl? ( dev-libs/openssl )
        )
    suggestion:
        net-mail/dovecot [[ description = [ Used for SASL support without cyrus-sasl ] ]]
"

if ever at_least 3 ; then
    DEPENDENCIES+="
        build+run:
            dev-libs/icu:=
    "
fi

BUGS_TO="mixi@exherbo.org"

postfix_src_prepare() {
    # fix makedefs to allow default tool names to be overridden via env
    edo sed \
        -e 's/AR=ar/AR=${AR:-ar}/' \
        -e 's/RANLIB=ranlib/RANLIB=${RANLIB:-ranlib}/' \
        -i makedefs

    default
}

postfix_src_configure() {
    local makeopts=() auxlibs=( -pthread -ldb -lpam -lresolv )
    # -DUSE_SASL_AUTH: this enables dovecot SASL and adds no additional build dependencies
    # -DHAS_DB: this is already enabled in sys_defs.h for linux
    local ccargs=(
        -DDEF_COMMAND_DIR=\\\"/usr/$(exhost --target)/bin\\\"
        -DDEF_DAEMON_DIR=\\\"/usr/$(exhost --target)/lib/postfix\\\"
        -DDEF_SENDMAIL_PATH=\\\"/usr/$(exhost --target)/bin/sendmail\\\"
        -DDEF_MANPAGE_DIR=\\\"/usr/share/man\\\"
        -DDEF_README_DIR=\\\"/usr/share/doc/${PNVR}/readme\\\"
        -DDEF_HTML_DIR=\\\"/usr/share/doc/${PNVR}/html\\\"
        -DUSE_SASL_AUTH
    )

    if [[ $(exhost --target) == *-musl* ]]; then
        # musl does not support NIS.
        ccargs+=( -DNO_NIS )
    else
        auxlibs+=( -lnsl )
    fi

    if option ssl; then
        ccargs+=( -DUSE_TLS )
        auxlibs+=( -lssl -lcrypto )
    fi

    if option cyrus; then
        ccargs+=( -DUSE_CYRUS_SASL -I/usr/$(exhost --target)/include/sasl )
        auxlibs+=( -lsasl2 )
    fi

    if option ldap; then
        ccargs+=( -DHAS_LDAP )

        if ever at_least 3; then
            makeopts+=( AUXLIBS_LDAP="-lldap -llber" )
        else
            auxlibs+=( -lldap -llber )
        fi
    fi

    if option mysql; then
        ccargs+=( -DHAS_MYSQL -I/usr/$(exhost --target)/include/mysql )

        if ever at_least 3; then
            makeopts+=( AUXLIBS_MYSQL="-L/usr/$(exhost --target)/lib/mysql/ -lmysqlclient -lz -lm" )
        else
            auxlibs+=( -L/usr/$(exhost --target)/lib/mysql/ -lmysqlclient -lz -lm )
        fi
    fi

    if option postgresql; then
        ccargs+=( -DHAS_PGSQL )
        if ever at_least 3; then
            makeopts+=( AUXLIBS_PGSQL="-lpq" )
        else
            auxlibs+=( -lpq )
        fi
    fi

    if ever at_least 3; then
        makeopts+=(
            shared=yes
            SHLIB_DIR=/usr/$(exhost --target)/lib/postfix
        )
    fi

    export AR="${AR}" RANLIB="${RANLIB}"

    emake \
        CC="${CC}" \
        OPT="${CFLAGS}" \
        CCARGS="${ccargs[*]}" \
        AUXLIBS="${auxlibs[*]}" \
        "${makeopts[@]}" \
        makefiles
}

postfix_src_install() {
    LD_LIBRARY_PATH=${WORK}/lib:${LD_LIBRARY_PATH} \
    edo /bin/sh postfix-install \
        -non-interactive \
        install_root="${IMAGE}" \
        shlib_directory=/usr/$(exhost --target)/lib/postfix \
        config_directory="/usr/share/doc/${PNVR}/defaults" \
        readme_directory="/usr/share/doc/${PNVR}/readme"

    edo mv "${IMAGE}"/usr/$(exhost --target)/bin/{,${PN}.}sendmail
    edo rm "${IMAGE}"/usr/bin/{mailq,newaliases}
    edo rmdir "${IMAGE}"/usr/bin

    alternatives_for mta ${PN} 9 /usr/$(exhost --target)/bin/sendmail ${PN}.sendmail
    alternatives_for mta ${PN} 9 /usr/$(exhost --target)/lib/sendmail ../bin/sendmail
    alternatives_for mta ${PN} 9 /usr/$(exhost --target)/bin/mailq sendmail
    alternatives_for mta ${PN} 9 /usr/$(exhost --target)/bin/newaliases sendmail

    local manpage
    for manpage in man1/{mailq.1,newaliases.1} man5/aliases.5; do
        edo mv "${IMAGE}"/usr/share/man/${manpage%/*}/{,${PN}.}${manpage##*/}
        alternatives_for mta ${PN} 9 /usr/share/man/${manpage} ${PN}.${manpage##*/}
    done

    keepdir /var/lib/postfix
    edo chown -R postfix:postfix "${IMAGE}"/var/lib/postfix/

    keepdir /var/spool/postfix
    rmdir "${IMAGE}"/var/spool/postfix/*
    edo chown root "${IMAGE}"/var/spool/postfix

    edo chown root:postdrop "${IMAGE}"/usr/$(exhost --target)/bin/post{drop,queue}
    edo chmod 2711 "${IMAGE}"/usr/$(exhost --target)/bin/post{drop,queue}

    pamd_mimic_system smtp auth auth account

    dodir /etc/postfix
    insinto /etc/postfix
    doins "${IMAGE}"/usr/share/doc/${PNVR}/defaults/{main,master}.cf
    keepdir /etc/postfix/postfix-files.d

    insinto /usr/share/doc/${PNVR}
    doins -r "${WORK}"/examples

    dosym /usr/share/doc/${PNVR} /usr/share/doc/${PN}

    install_systemd_files
}