mail-filter/spf-engine: add 3.0.3

The new 3.x packaging makes the milter a first-class citizen, but I've
left it disabled for now. There are incorrect paths, unnecessary PID
files and privilege-dropping, and a chown() exploit -- all reported
upstream. But since the milter was never available on Gentoo in the
first place, it seems prudent to leave it disabled until those issues
are sorted out.

Closes: https://bugs.gentoo.org/896976
Signed-off-by: Michael Orlitzky <mjo@gentoo.org>

mail-filter/spf-engine/Manifest

@@ -1 +1,2 @@
 DIST spf-engine-2.9.3.tar.gz 52974 BLAKE2B 9e6c47af7d523e1486d9bbfee2b0e53a4a97dbfc93e1cd14f70d4676542defaf6fede397d33e21c00e9bb2cdd1016c98981b6c0e735bdfd225b226920b9470b1 SHA512 adde80eca38f372ad00ed7355951007b9c02ef8a52a5a4edcbf2fa9959220f1083e3e313668e9c7ad2c26144148ae8ff62ec468d79936d96b43897598254f528
+DIST spf-engine-3.0.3.tar.gz 61350 BLAKE2B f28dfb10559bfd61be152a4b65a5653ec50b25718fcb63f8a2c9532fd9d52a51c131c99ba5408bd6aa424adc5ce6094da7eeb97dbacd7e60e8abb48c65c4f188 SHA512 08db392d2cce16651ba416fcd265e6606e1a8af3cb88721ed149a2286d11ac9ea6ed4d01572cea6950740890c3334e8e0d496d1d1e9edcc29d04833fec049ab0

mail-filter/spf-engine/spf-engine-3.0.3.ebuild

@@ -0,0 +1,74 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_9 python3_10 python3_11 )
+
+# The built-in ipaddress module handles the parsing of IP addresses. If
+# python is built without ipv6 support, then ipaddress can't parse ipv6
+# addresses, and the daemon will crash if it sees an ipv6 SPF record. In
+# other words, it's completely broken.
+PYTHON_REQ_USE="ipv6(+)"
+DISTUTILS_USE_PEP517=flit
+PYPI_NO_NORMALIZE=1
+inherit distutils-r1 pypi
+
+DESCRIPTION="Policy daemon for Postfix SPF verification"
+HOMEPAGE="https://launchpad.net/spf-engine"
+
+LICENSE="Apache-2.0"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+
+RDEPEND="dev-python/pyspf[${PYTHON_USEDEP}]
+	dev-python/authres[${PYTHON_USEDEP}]"
+
+DOCS=( CHANGES )
+
+python_prepare_all() {
+	distutils-r1_python_prepare_all
+
+	# The tarball has a "data" directory containing a hierarchy that
+	# flit wants to insert right into /usr. Before it does that, we have
+	# to remove the parts we don't want, and fix some of the paths.
+	#
+	# Note that one of our patches already mangles a few of these
+	# before we even see them.
+
+	einfo "removing milter files"
+	rm -v -r data/lib data/etc/init.d data/share/man/man8 || die
+	rm -v data/etc/pyspf-milter/pyspf-milter.conf || die
+	rm -v spf_engine/milter_spf.py || die
+
+	# And don't create a python-exec wrapper for it.
+	sed -e '/^pyspf-milter = /d' -i pyproject.toml || die
+
+	# The commented conf example is documentation, not configuration.
+	mv -v data/etc/python-policyd-spf/policyd-spf.conf.commented \
+	   data/share/doc/python-policyd-spf/ || die
+
+	# The man page hard-codes /usr/local/etc, it should be /etc.
+	sed -e 's:/usr/local/etc:/etc:g' \
+		-i data/share/man/man1/policyd-spf.1 || die
+
+	# Fix the documentation path.
+	mv -v data/share/doc/python-policyd-spf "data/share/doc/${PF}" || die
+
+	# The "real" config file mentions the commented one, so we point
+	# users in the right direction. Caveat: the documentation is
+	# compressed, so we're usually off by a ".bz2" suffix anyway.
+	local oldconf="policyd-spf.conf.commented"
+	local newconf="/usr/share/doc/${PF}/${oldconf}"
+	sed -e "1 s~ ${oldconf}~,\n#  ${newconf}~" \
+		-i "data/etc/python-policyd-spf/policyd-spf.conf" \
+		|| die 'failed to update commented config file path'
+}
+
+src_install() {
+	distutils-r1_src_install
+
+	# The "data" installation is relative to python's prefix, so
+	# data/etc gets installed to /usr/etc. Let's fix that.
+	mv -v "${ED}/usr/etc" "${ED}/" || die 'failed to relocate sysconfdir'
+}