# Copyright 1999-2025 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=8

MODULES_OPTIONAL_IUSE="modules"
inherit autotools linux-mod-r1 flag-o-matic pam systemd tmpfiles toolchain-funcs

MY_PV=${PV/_/}
MY_P="${PN}-${MY_PV}"
KERNEL_LIMIT=6.13

DESCRIPTION="The OpenAFS distributed file system"
HOMEPAGE="https://www.openafs.org/"
# We always d/l the doc tarball as man pages are not USE=doc material
[[ ${PV} == *_pre* ]] && MY_PRE="candidate/" || MY_PRE=""
SRC_URI="
		https://openafs.org/dl/openafs/${MY_PRE}${MY_PV}/${MY_P}-src.tar.bz2
		https://openafs.org/dl/openafs/${MY_PRE}${MY_PV}/${MY_P}-doc.tar.bz2
"

S="${WORKDIR}/${MY_P}"

LICENSE="IBM BSD openafs-krb5-a APSL-2"
SLOT="0"
KEYWORDS="~amd64 -riscv ~sparc ~x86 ~amd64-linux ~x86-linux"

IUSE="apidoc bitmap-later debug doc fuse kauth kerberos +modules +namei
ncurses perl +pthreaded-ubik selinux +supergroups tsm ubik-read-while-write"

BDEPEND="
		dev-lang/perl
		app-alternatives/lex
		app-alternatives/yacc
		apidoc? (
				app-text/doxygen[dot]
				media-gfx/graphviz
		)
		doc? (
				dev-libs/libxslt
				|| (
						>=dev-java/fop-2.10-r1:0
						app-text/dblatex
						app-text/docbook-sgml-utils[jadetex]
				)
		)
		perl? ( dev-lang/swig )"
DEPEND="
		virtual/libcrypt:=
		virtual/libintl
		amd64? ( tsm? ( app-backup/tsm ) )
		doc? (
				app-text/docbook-xsl-stylesheets
				app-text/docbook-xml-dtd:4.3
		)
		fuse? ( sys-fs/fuse:0= )
		kauth? ( sys-libs/pam )
		kerberos? ( virtual/krb5 )
		ncurses? ( sys-libs/ncurses:0= )"
RDEPEND="
		${DEPEND}
		selinux? ( sec-policy/selinux-afs )"

PATCHES=(
		"${FILESDIR}"/0001-autoconf-use-AC_CHECK_TOOL-for-as-and-ld.patch
		"${FILESDIR}"/0002-pam-paths.patch
		"${FILESDIR}"/0003-fbsd.patch
		"${FILESDIR}"/0004-sparc.patch
		"${FILESDIR}"/0005-uname.patch
		"${FILESDIR}"/0006-resolv.patch
		"${FILESDIR}"/0007-afsauthent-symbols.patch
		"${FILESDIR}"/0008-flags.patch
		"${FILESDIR}"/0009-docbook2pdf.patch
		"${FILESDIR}"/0010-libperl.patch
		"${FILESDIR}"/0011-xbsa.patch
		"${FILESDIR}"/0012-xml-dtd.patch
		"${FILESDIR}"/0013-kernel-cc-ld.patch
		"${FILESDIR}"/0014-upstream-struct-init.patch
		"${FILESDIR}"/0015-upstream-struct-desiginated-init.patch
)
# see https://bugs.gentoo.org/943641
# Upstream performs uses customized autoconf routines to check for
# the availability of various functions and the warnings/errors in
# the config log for implicit function declarations are expected
# and therefore are false positives.
QA_CONFIG_IMPL_DECL_SKIP=("*")

CONFIG_CHECK="~!AFS_FS KEYS"
ERROR_AFS_FS="OpenAFS conflicts with the in-kernel AFS-support. Make sure not to load both at the same time!"
ERROR_KEYS="OpenAFS needs CONFIG_KEYS option enabled"

pkg_pretend() {
		if use modules && use kernel_linux && kernel_is -ge ${KERNEL_LIMIT/\./ } ; then
				ewarn "Gentoo supports kernels which are supported by OpenAFS"
				ewarn "which are limited to the kernel versions: < ${KERNEL_LIMIT}"
				ewarn ""
				ewarn "You are free to utilize eapply_user to provide whatever"
				ewarn "support you feel is appropriate, but will not receive"
				ewarn "support as a result of those changes."
				ewarn ""
				ewarn "Please do not file a bug report about this."
				ewarn ""
				ewarn "Alternatively, you may:"
				ewarn "1. Use OpenAFS FUSE client, build OpenAFS with USE=fuse to enable it."
				ewarn "2. Use native kernel AFS client: configure your kernel with CONFIG_AFS_FS."
				ewarn "net-fs/openafs is not required in this case, but client's functionality will be limited."
		fi
}

pkg_setup() {
		use kernel_linux && linux-mod-r1_pkg_setup
}

src_prepare() {
		default

		# fixing 2-nd level makefiles to honor flags
		sed -i -r 's/\<CFLAGS[[:space:]]*=/CFLAGS+=/; s/\<LDFLAGS[[:space:]]*=/LDFLAGS+=/' \
				src/*/Makefile.in || die '*/Makefile.in sed failed'

		# build system is very delicate, so we can't run eautoreconf
		# run autotools commands based on what is listed in regen.sh
		_elibtoolize -c -f -i
		eaclocal -I src/cf -I src/external/rra-c-util/m4 -I src/external/autoconf-archive/m4
		eautoconf
		eautoconf -o configure-libafs configure-libafs.ac
		eautoheader
		einfo "Deleting autom4te.cache directory"
		rm -rf autom4te.cache || die
}

src_configure() {
		# requires the --enable-static to avoid build errors.  This is
		# currently an upstream limitation.
		local myconf=(
				--enable-static
				--disable-strip-binaries
				$(use_enable bitmap-later)
				$(use_enable debug)
				$(use_enable debug debug-locks)
				$(use_enable debug debug-lwp)
				$(use_enable fuse fuse-client)
				$(use_enable kauth)
				$(use_enable modules kernel-module)
				$(use_enable namei namei-fileserver)
				$(use_enable ncurses gtx)
				$(use_enable pthreaded-ubik)
				$(use_enable supergroups)
				$(use_enable ubik-read-while-write)
				$(use_with apidoc dot)
				$(use_with doc docbook-stylesheets /usr/share/sgml/docbook/xsl-stylesheets)
				$(use_with kerberos krb5)
				$(use_with perl swig)
		)

		# bug #861368
		filter-lto

		if use debug; then
				use kauth && myconf+=( --enable-debug-pam )
				use modules && myconf+=( --enable-debug-kernel )
		fi

		if use modules; then
				if use kernel_linux; then
						if kernel_is -ge 3 17 && kernel_is -le 3 17 2; then
								myconf+=( --enable-linux-d_splice_alias-extra-iput )
						fi
						myconf+=( --with-linux-kernel-headers="${KV_DIR}" \
										  --with-linux-kernel-build="${KV_OUT_DIR}" )
				fi
		fi

		use amd64 && use tsm && myconf+=( --enable-tivoli-tsm )

		local ARCH="$(tc-arch-kernel)"
		local MY_ARCH="$(tc-arch)"
		local BSD_BUILD_DIR="/usr/src/sys/${MY_ARCH}/compile/GENERIC"

		AFS_SYSKVERS=26 \
		econf "${myconf[@]}"

}

src_compile() {
		ARCH="$(tc-arch-kernel)" AR="$(tc-getAR)" emake V=1
		local d
		if use doc; then
				emake -C doc/xml/AdminGuide auagd000.pdf
				emake -C doc/xml/AdminRef auarf000.pdf
				emake -C doc/xml/QuickStartUnix auqbg000.pdf
				emake -C doc/xml/UserGuide auusg000.pdf
		fi
		if use apidoc; then
				doxygen doc/doxygen/Doxyfile || die "Failed to build doxygen files"
		fi
}

src_install() {
		local OPENRCDIR="${FILESDIR}/openrc"
		local SYSTEMDDIR="${FILESDIR}/systemd"

		emake DESTDIR="${ED}" install_nolibafs

		if use modules; then
				if use kernel_linux; then
						local srcdir=$(expr "${S}"/src/libafs/MODLOAD-*)
						[[ -f ${srcdir}/libafs.ko ]] || die "Couldn't find compiled kernel module"
						linux_domodule ${srcdir}/libafs.ko
						modules_post_process
				fi
		fi

		insinto /etc/openafs
		doins src/afsd/CellServDB
		newins "${FILESDIR}/ThisCell.default" ThisCell
		newins "${FILESDIR}/cacheinfo.default" cacheinfo

		# pam_afs and pam_afs.krb have been installed in irregular locations, fix
		if use kauth; then
				dopammod "${ED}"/usr/$(get_libdir)/pam_afs*
		fi
		rm -f "${ED}"/usr/$(get_libdir)/pam_afs* || die

		# remove kdump stuff provided by kexec-tools #222455
		rm -rf "${ED}"/usr/sbin/kdump* || die

		# avoid collision with mit_krb5's version of kpasswd
		if use kauth; then
				mv "${ED}"/usr/bin/kpasswd{,_afs} || die
				mv "${ED}"/usr/share/man/man1/kpasswd{,_afs}.1 || die
		fi

		# avoid collision with heimdal's pagsh
		if has_version app-crypt/heimdal; then
				mv "${ED}"/usr/bin/pagsh{,_afs} || die
				mv "${ED}"/usr/share/man/man1/pagsh{,_afs}.1 || die
		fi

		# move lwp stuff around #200674 #330061
		mv "${ED}"/usr/include/{lwp,lock,timer}.h "${ED}"/usr/include/afs/ || die
		mv "${ED}"/usr/$(get_libdir)/liblwp* "${ED}"/usr/$(get_libdir)/afs/ || die
		# update paths to the relocated lwp headers
		sed -ri \
				-e '/^#include <(lwp|lock|timer).h>/s:<([^>]*)>:<afs/\1>:' \
				"${ED}"/usr/include/*.h \
				"${ED}"/usr/include/*/*.h \
				|| die

		# minimal documentation
		use kauth && doman src/pam/pam_afs.5
		DOCS=( "${FILESDIR}/README.Gentoo" src/afsd/CellServDB NEWS README )

		# documentation package
		rm -rf doc/txt/winnotes || die # unneeded docs
		if use doc; then
				DOCS+=( doc/{pdf,protocol,txt} CODING CONTRIBUTING )
				newdoc doc/xml/AdminGuide/auagd000.pdf AdminGuide.pdf
				newdoc doc/xml/AdminRef/auarf000.pdf AdminRef.pdf
				newdoc doc/xml/QuickStartUnix/auqbg000.pdf QuickStartUnix.pdf
				newdoc doc/xml/UserGuide/auusg000.pdf UserGuide.pdf
		fi
		use apidoc && DOCS+=( doc/doxygen/output/html )
		einstalldocs

		# Gentoo related scripts
		newinitd "${OPENRCDIR}"/openafs-client.initd openafs-client
		newconfd "${OPENRCDIR}"/openafs-client.confd openafs-client
		newinitd "${OPENRCDIR}"/openafs-server.initd openafs-server
		newconfd "${OPENRCDIR}"/openafs-server.confd openafs-server
		dotmpfiles "${SYSTEMDDIR}"/tmpfiles.d/openafs-client.conf
		systemd_dounit "${SYSTEMDDIR}"/openafs-client.service
		systemd_dounit "${SYSTEMDDIR}"/openafs-server.service
		systemd_install_serviced "${SYSTEMDDIR}"/openafs-client.service.conf
		systemd_install_serviced "${SYSTEMDDIR}"/openafs-server.service.conf

		# used directories: client
		keepdir /etc/openafs

		# used directories: server
		keepdir /etc/openafs/server
		diropts -m0700
		keepdir /var/lib/openafs
		keepdir /var/lib/openafs/db
		diropts -m0755
		keepdir /var/lib/openafs/logs

		# link logfiles to /var/log
		dosym ../lib/openafs/logs /var/log/openafs
}

pkg_preinst() {
		## Somewhat intelligently install default configuration files
		## (when they are not present)
		local x
		for x in cacheinfo CellServDB ThisCell ; do
				if [[ -e "${EROOT}"/etc/openafs/${x} ]] ; then
						cp "${EROOT}"/etc/openafs/${x} "${ED}"/etc/openafs/
				fi
		done
}

pkg_postinst() {
		use kernel_linux && linux-mod-r1_pkg_postinst

		tmpfiles_process openafs-client.conf

		elog "This installation should work out of the box (at least the"
		elog "client part doing global afs-cell browsing, unless you had"
		elog "a previous and different configuration).  If you want to"
		elog "set up your own cell or modify the standard config,"
		elog "please have a look at the Gentoo OpenAFS documentation"
		elog "(warning: it is not yet up to date wrt the new file locations)"
		elog
		elog "The documentation can be found at:"
		elog "  https://wiki.gentoo.org/wiki/OpenAFS"
		elog
		elog "Systemd users should run emerge --config ${CATEGORY}/${PN} before"
		elog "first use and whenever ${EROOT}/etc/openafs/cacheinfo is edited."
}

pkg_config() {
		elog "Setting cache options for systemd."

		SERVICED_FILE="${EROOT}"/etc/systemd/system/openafs-client.service.d/00gentoo.conf
		[[ ! -e "${SERVICED_FILE}" ]] && die "Systemd service.d file ${SERVICED_FILE} not found."

		CACHESIZE=$(cut -d ':' -f 3 "${EROOT}"/etc/openafs/cacheinfo)
		[[ -z ${CACHESIZE} ]] && die "Failed to parse ${EROOT}/etc/openafs/cacheinfo."

		if [[ ${CACHESIZE} -lt 131070 ]]; then
				AFSD_CACHE_ARGS="-stat 300 -dcache 100 -daemons 2 -volumes 50"
		elif [[ ${CACHESIZE} -lt 524288 ]]; then
				AFSD_CACHE_ARGS="-stat 2000 -dcache 800 -daemons 3 -volumes 70"
		elif [[ ${CACHESIZE} -lt 1048576 ]]; then
				AFSD_CACHE_ARGS="-stat 2800 -dcache 2400 -daemons 5 -volumes 128"
		elif [[ ${CACHESIZE} -lt 2209715 ]]; then
				AFSD_CACHE_ARGS="-stat 3600 -dcache 3600 -daemons 5 -volumes 196 -files 50000"
		else
				AFSD_CACHE_ARGS="-stat 4000 -dcache 4000 -daemons 6 -volumes 256 -files 50000"
		fi

		# Replace existing env var if exists, else append line
		grep -q "^Environment=\"AFSD_CACHE_ARGS=" "${SERVICED_FILE}" && \
				sed -i "s/^Environment=\"AFSD_CACHE_ARGS=.*/Environment=\"AFSD_CACHE_ARGS=${AFSD_CACHE_ARGS}\"/" "${SERVICED_FILE}" || \
				sed -i "$ a\Environment=\"AFSD_CACHE_ARGS=${AFSD_CACHE_ARGS}\"" "${SERVICED_FILE}" || \
				die "Updating ${SERVICED_FILE} failed."
}