# Copyright 1999-2005 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sys-libs/pam/pam-0.78.ebuild,v 1.4 2005/02/26 21:09:45 azarah Exp $

FORCE_SYSTEMAUTH_UPDATE="no"

# BDB is internalized to get a non-threaded lib for pam_userdb.so to
# be built with.  The runtime-only dependency on BDB suggests the user
# will use the system-installed db_load to create pam_userdb databases.
# PWDB is internalized because it is specifically designed to work
# with Linux-PAM.  I'm not really certain how pervasive the Radius
# and NIS services of PWDB are at this point.

PATCH_LEVEL="1.0"
BDB_VER="4.3.27"
BDB_VER2="4.1.25"
PAM_REDHAT_VER="0.78-3"

HOMEPAGE="http://www.kernel.org/pub/linux/libs/pam/"
DESCRIPTION="Pluggable Authentication Modules"

S="${WORKDIR}/Linux-PAM-${PV}"
S2="${WORKDIR}/pam-${PV}-patches"
SRC_URI="http://www.kernel.org/pub/linux/libs/pam/pre/library/Linux-PAM-${PV}.tar.gz
	mirror://gentoo/${P}-patches-${PATCH_LEVEL}.tar.bz2
	http://dev.gentoo.org/~seemant/distfiles/${P}-patches-${PATCH_LEVEL}.tar.bz2
	berkdb? ( http://downloads.sleepycat.com/db-${BDB_VER}.tar.gz )"

LICENSE="PAM"
SLOT="0"
KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~mips ~ppc ~ppc64 ~s390 ~sparc ~x86"
IUSE="berkdb pwdb selinux pam_chroot pam_console pam_timestamp"

RDEPEND=">=sys-libs/cracklib-2.7-r8
	selinux? ( sys-libs/libselinux )
	berkdb? ( >=sys-libs/db-${BDB_VER2} )"

# Note that we link to static versions of glib (pam_console.so)
# and pwdb (pam_pwdb.so), so we need glib-2.6.2-r1 or later ...
DEPEND="${RDEPEND}
	dev-lang/perl
	pam_console? ( >=dev-libs/glib-2.6.2-r1 )
	>=sys-devel/autoconf-2.59
	>=sys-devel/automake-1.6
	>=sys-devel/flex-2.5.4a-r5
	pwdb? ( >=sys-libs/pwdb-0.62 )"

# Have python sandbox issues currently ...
#	doc? ( app-text/sgmltools-lite )

#inherit needs to be after DEPEND definition to protect RDEPEND
inherit gcc eutils flag-o-matic gnuconfig

apply_pam_patches() {
	local x=
	local y=
	local patches="${T}/patches.$$"

	for x in redhat gentoo
	do
		rm -f "${patches}"

		# Need to be a '| while read x', as some lines may have spaces ...
		grep -v '^#' "${S2}/list.${x}-patches" | grep -v '^$' | while read y
		do
			# Remove the 'Patch[0-9]*: ' from the redhat list
			echo "${y}" | sed -e 's|^Patch.*: \(.*\)|\1|' >> "${patches}"
		done
		for y in $(cat "${patches}")
		do
			epatch "${S2}/${x}-patches/${y}"
		done
	done
}

pkg_setup() {
	local x=

	if use pwdb; then
		for x in libpwdb.a libcrack.a; do
			if [ ! -f "${ROOT}/usr/$(get_libdir)/${x}" ]; then
				eerror "Could not find /usr/$(get_libdir)/${x} needed to build Linux-PAM!"
				die "Could not find /usr/$(get_libdir)/${x} needed to build Linux-PAM!"
			fi
		done
	fi
	if use pam_console; then
		x="libglib-2.0.a"
		if [ ! -f "${ROOT}/usr/$(get_libdir)/${x}" ]; then
			eerror "Could not find /usr/$(get_libdir)/${x} needed to build Linux-PAM!"
			eerror "Please remerge glib-2.6.* to make sure you have static changes."
			die "Could not find /usr/$(get_libdir)/${x} needed to build Linux-PAM!"
		fi
	fi

	return 0
}

src_unpack() {
	local x=

	unpack ${A} || die "Couldn't unpack ${A}"

	cd ${S} || die
	tar -zxf ${S2}/pam-redhat-${PAM_REDHAT_VER}.tar.gz \
		|| die "Couldn't unpack pam-redhat-${PAM_REDHAT_VER}.tar.gz"
	# These ones we do not want, or do not work with non RH
	rm -rf ${S}/modules/{pam_rps,pam_postgresok}

	apply_pam_patches

	if use selinux; then
		epatch ${S2}/gentoo-patches/pam-0.78-selinux.patch
		use pwdb && epatch ${S2}/gentoo-patches/pam-pwdbselinux.patch
	fi

	# Check which extra modules should be built
	# (Do this after apply_pam_patches(), else some may fail)
	for x in pam_chroot pam_console pam_timestamp; do
		use "${x}" || rm -rf "${S}/modules/${x}"
	done
	use berkdb || rm -rf "${S}/modules/pam_userdb"
	use pwdb || rm -rf "${S}/modules/pam_pwdb"
	use pwdb || rm -rf "${S}/modules/pam_radius"

	# Fixup libdir for 64bit arches
	sed -ie "s:@get_libdir:$(get_libdir):" ${S}/configure.in

	for readme in modules/pam_*/README ; do
		cp -f "${readme}" doc/txts/README.$(dirname "${readme}" | \
			sed -e 's|^modules/||')
	done

	# Bug #80604 (If install-sh do not exist, touch it)
	cp /usr/share/automake/install-sh ${S}/ 2>/dev/null || touch install-sh
	export WANT_AUTOCONF=2.5
	autoconf || die
}

src_compile() {
	# Bug #70471 (Compile issues with other locales)
	export LANG=C LC_ALL=C

	if use berkdb
	then
		einfo "Building Berkley DB ${BDB_VER}..."
		cd ${WORKDIR}/db-${BDB_VER}/build_unix || die

		# Pam uses berkdb, which db-4.1.x series can't detect mips64, so we fix it
		if use mips; then
			einfo "Updating berkdb config.{guess,sub} for mips"
			S="${WORKDIR}/db-${BDB_VER}/dist" \
			gnuconfig_update
		fi

		#echo db_cv_mutex=UNIX/fcntl > config.cache
		#./s_config
		../dist/configure \
			--cache-file=config.cache \
			--disable-compat185 \
			--disable-cxx \
			--disable-diagnostic \
			--disable-dump185 \
			--disable-java \
			--disable-rpc \
			--disable-tcl \
			--disable-shared \
			--disable-o_direct \
			--with-pic \
			--with-uniquename=_pam \
			--with-mutex="UNIX/fcntl" \
			--prefix="${S}" \
			--includedir="${S}/include" \
			--libdir="${S}/lib" || die "Bad BDB ./configure"

		# XXX: hack out O_DIRECT support in db4 for now.
		#      (Done above now with --disable-o_direct now)

		make || die "BDB build failed"
		make install || die

		export CPPFLAGS="-I${S}/include"
		export LDFLAGS="-L${S}/lib"
		export LIBNAME="lib"
	fi

	if [ "${ARCH}" = "alpha" ]
	then
		if [ ! -z "$(strings -a /usr/lib/libglib.a | grep -i 'Compaq Computer Corp.')" ]
		then
			# should be LDFLAGS, but this configure is screwy.
			echo
			einfo "It looks like you compiled glib with ccc, this is okay, but"
			einfo "I'll need to force gcc to link with libots...."
			echo
			append-flags -lots
			sed -i -e 's/$(CC) -o/$(CC) -lots -o/g' ${S}/modules/pam_pwdb/Makefile
		fi
	fi

	einfo "Building Linux-PAM ${PV}..."
	cd ${S}
	econf --enable-static-libpam \
		--enable-fakeroot="${D}" \
		--libdir="/$(get_libdir)" \
		--enable-isadir="../../$(get_libdir)/security" \
		|| die

	# Python stuff in docs gives sandbox problems
	sed -i -e 's|modules doc examples|modules|' Makefile

	# Fix warnings for gcc-2.95.3
	if [ "$(gcc-version)" = "2.95" ]
	then
		sed -i -e "s:-Wpointer-arith::" Make.Rules
	fi

	if ! use berkdb
	then
		# Do not build pam_userdb.so ...
		sed -i -e "s:^HAVE_NDBM_H=yes:HAVE_NDBM_H=no:" \
			-e "s:^HAVE_LIBNDBM=yes:HAVE_LIBNDBM=no:" \
			-e "s:^HAVE_LIBDB=yes:HAVE_LIBDB=no:" \
			Make.Rules

		# Also edit the configuration file else the wrong include files
		# get used
		sed -i -e "s:^#define HAVE_NDBM_H.*$:/* #undef HAVE_NDBM_H */:" \
		       -e "s:^#define HAVE_DB_H.*$:/* #undef HAVE_DB_H */:" \
		       _pam_aconf.h

	else
		# Do not link pam_userdb.so to db-1.85 ...
		sed -i -e "s:^HAVE_NDBM_H=yes:HAVE_NDBM_H=no:" \
			-e "s:^HAVE_LIBNDBM=yes:HAVE_LIBNDBM=no:" \
			Make.Rules

		# Also edit the configuration file else the wrong include files
		# get used
		sed -i -e "s:^#define HAVE_NDBM_H.*$:/* #undef HAVE_NDBM_H */:" \
			_pam_aconf.h
	fi

	make || die "PAM build failed"
}

src_install() {
	local x=

	einfo "Installing Linux-PAM ${PV}..."
	make FAKEROOT=${D} \
		LDCONFIG="" \
		install || die

	# Make sure every module built.
	# Do not remove this, as some module can fail to build
	# and effectively lock the user out of his system.
	einfo "Checking if all modules were built..."
	for x in ${S}/modules/pam_*
	do
		if [ -d ${x} ]
		then
			local mod_name=$(basename "${x}")
			local sec_dir="${D}/$(get_libdir)/security"

			if ! ls -1 "${sec_dir}/${mod_name}"*.so &> /dev/null
			then
				echo
				eerror "ERROR: ${mod_name} module did not build."
				echo
				die "${mod_name} module did not build."
			fi
		fi
	done

	dodir /usr/$(get_libdir)
	cd ${D}/$(get_libdir)
	for x in pam pamc pam_misc
	do
		rm lib${x}.so
		ln -s lib${x}.so.${PV} lib${x}.so
		ln -s lib${x}.so.${PV} lib${x}.so.0
		mv lib${x}.a ${D}/usr/$(get_libdir)
		# See bug #4411
		gen_usr_ldscript lib${x}.so
	done

	cd ${S}

	# need this for pam_console
	keepdir /var/run/console

	for x in ${FILESDIR}/pam.d/*
	do
		[[ -f ${x} ]] && dopamd ${x}
	done

	# Only add this one if needed.
	if [ "${FORCE_SYSTEMAUTH_UPDATE}" = "yes" ]; then
		newpamd ${FILESDIR}/pam.d/system-auth system-auth.new || \
			die "Failed to install system-auth.new!"
	fi

	insinto /etc/security
	doins ${FILESDIR}/pam_env.conf
	doman doc/man/*.[0-9]

	dodoc CHANGELOG Copyright README
	docinto modules ; dodoc modules/README ; dodoc doc/txts/README.*
	# Install our own README.pam_console
	docinto ; dodoc ${FILESDIR}/README.pam_console
	docinto txt ; dodoc doc/specs/*.txt #doc/txts/*.txt
#	docinto print ; dodoc doc/ps/*.ps

#	docinto html
#	dohtml -r doc/html/
}

pkg_postinst() {
	if [ "${FORCE_SYSTEMAUTH_UPDATE}" = "yes" ]; then
		local CHECK1="$(md5sum ${ROOT}/etc/pam.d/system-auth | cut -d ' ' -f 1)"
		local CHECK2="$(md5sum ${ROOT}/etc/pam.d/system-auth.new | cut -d ' ' -f 1)"

		if [ "${CHECK1}" != "${CHECK2}" ]; then
			ewarn "Due to a security issue, ${ROOT}etc/pam.d/system-auth "
			ewarn "is being updated automatically. Your old "
			ewarn "system-auth will be backed up as:"
			ewarn
			ewarn "  ${ROOT}etc/pam.d/system-auth.bak"
			echo

			cp -a ${ROOT}/etc/pam.d/system-auth \
				${ROOT}/etc/pam.d/system-auth.bak;
			mv -f ${ROOT}/etc/pam.d/system-auth.new \
				${ROOT}/etc/pam.d/system-auth
			rm -f ${ROOT}/etc/pam.d/._cfg????_system-auth
		else
			rm -f ${ROOT}/etc/pam.d/system-auth.new
		fi
	fi
}