# Copyright 1999-2010 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

EAPI="2"

inherit eutils versionator ssl-cert

major_minor="$( get_version_component_range 1-2 )"
sieve_version="0.1.17"
managesieve_version="0.11.11"
SRC_URI="http://dovecot.org/releases/${major_minor}/${P}.tar.gz
	sieve? ( http://www.rename-it.nl/dovecot/${major_minor}/dovecot-${major_minor}-sieve-${sieve_version}.tar.gz )
	managesieve? (
		http://www.rename-it.nl/dovecot/${major_minor}/dovecot-${PV}-managesieve-${managesieve_version}.diff.gz
		http://www.rename-it.nl/dovecot/${major_minor}/dovecot-${major_minor}-managesieve-${managesieve_version}.tar.gz
	)"
DESCRIPTION="An IMAP and POP3 server written with security primarily in mind"
HOMEPAGE="http://www.dovecot.org/"

SLOT="0"
LICENSE="LGPL-2.1" # MIT too?
KEYWORDS="~alpha ~amd64 ~arm ~sparc ~x86"

IUSE="berkdb bzip2 caps cydir dbox doc ipv6 kerberos ldap +maildir managesieve mbox mysql pam postgres sieve sqlite +ssl suid vpopmail zlib"

DEPEND="berkdb? ( sys-libs/db )
	caps? ( sys-libs/libcap )
	kerberos? ( virtual/krb5 )
	ldap? ( net-nds/openldap )
	mysql? ( virtual/mysql )
	pam? ( virtual/pam )
	postgres? ( dev-db/postgresql-base )
	sqlite? ( dev-db/sqlite )
	ssl? ( dev-libs/openssl )
	vpopmail? ( net-mail/vpopmail )"

RDEPEND="${DEPEND}
	>=net-mail/mailbase-0.00-r8"

pkg_setup() {
	if use managesieve && ! use sieve; then
		eerror "managesieve USE flag selected but sieve USE flag unselected"
		die "USE flag problem"
	fi

	if use dbox && ! use maildir; then
		eerror "dbox USE flag needs maildir USE flag enabled"
		die "USE flag problem"
	fi

	# Add user and group for login process (same as for fedora/redhat)
	enewgroup dovecot 97
	enewuser dovecot 97 -1 /dev/null dovecot
	# add "mail" group for suid'ing. Better security isolation.
	if use suid; then
		enewgroup mail
	fi
}

src_prepare() {
	use managesieve && epatch "${WORKDIR}"/dovecot-${PV}-managesieve-${managesieve_version}.diff
}

src_configure() {
	local conf=""

	if use postgres || use mysql || use sqlite; then
		conf="${conf} --with-sql"
	fi

	local storages=""
	for storage in cydir dbox maildir mbox; do
		use ${storage} && storages="${storage} ${storages}"
	done
	[ "${storages}" ] || storages="maildir"

	econf \
		--sysconfdir=/etc/dovecot \
		--localstatedir=/var \
		--with-moduledir="/usr/$( get_libdir )/dovecot" \
		$( use_with berkdb db ) \
		$( use_with bzip2 bzlib ) \
		$( use_with caps libcap ) \
		$( use_with kerberos gssapi ) \
		$( use_with ldap ) \
		$( use_with mysql ) \
		$( use_with pam ) \
		$( use_with postgres pgsql ) \
		$( use_with sqlite ) \
		$( use_with ssl ) \
		$( use_with vpopmail ) \
		$( use_with zlib ) \
		$( use_with ldap) \
		--with-storages="${storages}" \
		--with-pic \
		--enable-header-install \
		${conf}

	if use sieve; then
		# The sieve plugin needs this file to be build to determine the plugin
		# directory and the list of libraries to link to.
		emake dovecot-config || die "emake dovecot-config failed"
		cd "../dovecot-${major_minor}-sieve-${sieve_version}"
		econf --with-dovecot="${S}"

		if use managesieve; then
			cd "../dovecot-${major_minor}-managesieve-${managesieve_version}"
			econf --with-dovecot="${S}" --with-dovecot-sieve="../dovecot-${major_minor}-sieve-${sieve_version}"
		fi
	fi
}

src_compile() {
	emake CC="$(tc-getCC)" CFLAGS="${CFLAGS}" || die "make failed"

	if use sieve; then
		cd "../dovecot-${major_minor}-sieve-${sieve_version}"
		emake CC="$(tc-getCC)" CFLAGS="${CFLAGS}" || die "make failed"

		if use managesieve; then
			cd "../dovecot-${major_minor}-managesieve-${managesieve_version}"
			emake CC="$(tc-getCC)" CFLAGS="${CFLAGS}" || die "make failed"
		fi
	fi
}

src_install () {
	emake DESTDIR="${D}" install || die "make install failed"

	# insecure:
	#use suid && fperms u+s /usr/libexec/dovecot/deliver
	#better:
	if use suid;then
		einfo "Changing perms to allow deliver to be suided"
		fowners root:mail /usr/libexec/dovecot/deliver
		fperms 4750 /usr/libexec/dovecot/deliver
	fi

	rm -f "${D}"/etc/dovecot/dovecot-{ldap,sql}-example.conf

	newinitd "${FILESDIR}"/dovecot-1.2.init dovecot

	rm -rf "${D}"/usr/share/doc/dovecot

	if use ssl; then
		sed -i -e 's,^CERTDIR=.*,CERTDIR=\$SSLDIR/dovecot,' \
			-e 's,^KEYDIR=.*,KEYDIR=\$SSLDIR/dovecot,' \
			-e 's,^CERTFILE=.*,CERTFILE=\$CERTDIR/server.pem,' \
			-e 's,^KEYFILE=.*,KEYFILE=\$KEYDIR/server.key,' \
			doc/mkcert.sh || die "failed to update SSL settings in mkcert.sh"
	fi

	dodoc AUTHORS NEWS README TODO dovecot-example.conf || die "basic dodoc failed"
	dodoc doc/* || die "dodoc doc/ failed"
	docinto wiki
	dodoc doc/wiki/* || die "dodoc doc/wiki/ failed"

	# Create the dovecot.conf file from the dovecot-example.conf file that
	# the dovecot folks nicely left for us....
	local conf="${D}/etc/dovecot/dovecot.conf"
	mv "${D}"/etc/dovecot/dovecot-example.conf "${D}"/etc/dovecot/dovecot.conf

	# .maildir is the Gentoo default, but we need to support mbox to
	local mail_location="maildir:~/.maildir"
	if use mbox; then
		mail_location="mbox:/var/spool/mail/%u:INDEX=/var/dovecot/%u"
		keepdir /var/dovecot
		sed -i -e 's|#mail_privileged_group =|mail_privileged_group = mail|' "${conf}"
	fi
	sed -i -e \
		"s|#mail_location =|mail_location = ${mail_location}|" "${conf}" \
		|| die "failed to update mail location settings in dovecot.conf"

	# We're using pam files (imap and pop3) provided by mailbase
	if use pam; then
		sed -i -e '/passdb pam/, /^[ \t]*}/ s|#args = dovecot|args = "\*"|' \
			"${conf}" || die "failed to update PAM settings in dovecot.conf"
		# mailbase does not provide a managesieve pam file
		use managesieve && dosym imap /etc/pam.d/managesieve
	fi

	# Listen on ipv6 and ipv4
	if use ipv6; then
		sed -i -e 's/^#listen = \*/listen = \*, \[::\]/g' "${conf}" \
			|| die "failed to update listen settings in dovecot.conf"
	fi

	# Update ssl cert locations
	if use ssl; then
		sed -i -e 's,^#ssl_cert_file =.*,ssl_cert_file = /etc/ssl/dovecot/server.pem,' \
			-e 's,^#ssl_key_file =.*,ssl_key_file = /etc/ssl/dovecot/server.key,' \
			"${conf}" || die "failed to update SSL settings in dovecot.conf"
	fi

	# Install SQL configuration
	if use mysql || use postgres; then
		cp doc/dovecot-sql-example.conf "${D}"/etc/dovecot/dovecot-sql.conf
		fperms 600 /etc/dovecot/dovecot-sql.conf
		sed -i -e '/db sql/,/args/ s|=|= /etc/dovecot-sql.conf|' "${conf}" \
			|| die "failed to update SQL settings in dovecot-sql.conf"
		dodoc doc/dovecot-sql-example.conf
	fi

	# Install LDAP configuration
	if use ldap; then
		cp doc/dovecot-ldap-example.conf "${D}"/etc/dovecot/dovecot-ldap.conf
		fperms 600 /etc/dovecot/dovecot-ldap.conf
		sed -i -e '/db ldap/,/args/ s|=|= /etc/dovecot-ldap.conf|' "${conf}" \
			|| die "failed to update LDAP settings in dovecot-ldap.conf"
		dodoc doc/dovecot-ldap-example.conf
	fi

	if use sieve; then
		cd "../dovecot-${major_minor}-sieve-${sieve_version}"
		emake DESTDIR="${D}" install || die "make install failed (sieve)"

		if use managesieve; then
			cd "../dovecot-${major_minor}-managesieve-${managesieve_version}"
			emake DESTDIR="${D}" install || die "make install failed (managesieve)"
		fi
	fi

	dodir /var/run/dovecot
	fowners root:root /var/run/dovecot
	fperms 0755 /var/run/dovecot
	keepdir /var/run/dovecot/login
	fowners root:dovecot /var/run/dovecot/login
	fperms 0750 /var/run/dovecot/login

	ewarn "If you are upgrading from Dovecot 1.1, read "
	ewarn " http://wiki.dovecot.org/Upgrading/1.2"
	if use sieve; then
		ewarn " http://wiki.dovecot.org/LDA/Sieve/Dovecot#Migration_from_CMUSieve"
		ewarn " In particular, do not forget to change cmusieve to sieve"
	fi
}

pkg_postinst() {

	if use ssl; then
	# Let's not make a new certificate if we already have one
		if ! [[ -e "${ROOT}"/etc/ssl/dovecot/server.pem && \
		-e "${ROOT}"/etc/ssl/dovecot/server.key ]];	then
			einfo "Creating SSL	certificate"
			SSL_ORGANIZATION="${SSL_ORGANIZATION:-Dovecot IMAP Server}"
			install_cert /etc/ssl/dovecot/server
			chown dovecot:mail "${ROOT}"/etc/ssl/dovecot/server.{key,pem}
		fi
	fi

	if grep -q '^ssl_key_password' "${ROOT}"/etc/dovecot/dovecot.conf; then
		echo
		ewarn "You have set ssl_key_password in dovecot.conf!"
		ewarn "You are URGED to read the advice in the current"
		ewarn "dovecot.conf regarding sensible handling of that"
		ewarn "password, as it might be readable by any user"
		ewarn "on your system who can access that file!"
	fi

}