437 lines
15 KiB
Bash
437 lines
15 KiB
Bash
# Copyright 1999-2024 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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EAPI=8
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VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/openssh.org.asc
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inherit user-info flag-o-matic autotools optfeature pam systemd toolchain-funcs verify-sig
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# Make it more portable between straight releases
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# and _p? releases.
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PARCH=${P/_}
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DESCRIPTION="Port of OpenBSD's free SSH release"
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HOMEPAGE="https://www.openssh.com/"
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SRC_URI="
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mirror://openbsd/OpenSSH/portable/${PARCH}.tar.gz
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verify-sig? ( mirror://openbsd/OpenSSH/portable/${PARCH}.tar.gz.asc )
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"
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S="${WORKDIR}/${PARCH}"
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LICENSE="BSD GPL-2"
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SLOT="0"
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KEYWORDS="~alpha amd64 arm ~arm64 ~hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 ~sparc x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
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# Probably want to drop ssl defaulting to on in a future version.
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IUSE="abi_mips_n32 audit debug dss kerberos ldns libedit livecd pam +pie security-key selinux +ssl static test xmss"
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RESTRICT="!test? ( test )"
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REQUIRED_USE="
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ldns? ( ssl )
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pie? ( !static )
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static? ( !kerberos !pam )
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xmss? ( ssl )
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test? ( ssl )
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"
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# tests currently fail with XMSS
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REQUIRED_USE+="test? ( !xmss )"
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LIB_DEPEND="
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audit? ( sys-process/audit[static-libs(+)] )
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ldns? (
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net-libs/ldns[static-libs(+)]
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net-libs/ldns[ecdsa(+),ssl(+)]
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)
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libedit? ( dev-libs/libedit:=[static-libs(+)] )
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security-key? ( >=dev-libs/libfido2-1.5.0:=[static-libs(+)] )
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selinux? ( >=sys-libs/libselinux-1.28[static-libs(+)] )
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ssl? ( >=dev-libs/openssl-1.1.1l-r1:0=[static-libs(+)] )
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virtual/libcrypt:=[static-libs(+)]
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>=sys-libs/zlib-1.2.3:=[static-libs(+)]
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"
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RDEPEND="
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acct-group/sshd
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acct-user/sshd
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!static? ( ${LIB_DEPEND//\[static-libs(+)]} )
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pam? ( sys-libs/pam )
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kerberos? ( virtual/krb5 )
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"
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DEPEND="
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${RDEPEND}
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virtual/os-headers
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kernel_linux? ( !prefix-guest? ( >=sys-kernel/linux-headers-5.1 ) )
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static? ( ${LIB_DEPEND} )
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"
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RDEPEND="
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${RDEPEND}
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!net-misc/openssh-contrib
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pam? ( >=sys-auth/pambase-20081028 )
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!prefix? ( sys-apps/shadow )
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"
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BDEPEND="
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dev-build/autoconf
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virtual/pkgconfig
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verify-sig? ( sec-keys/openpgp-keys-openssh )
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"
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PATCHES=(
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"${FILESDIR}/${PN}-9.4_p1-Allow-MAP_NORESERVE-in-sandbox-seccomp-filter-maps.patch"
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"${FILESDIR}/${PN}-9.6_p1-fix-xmss-c99.patch"
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"${FILESDIR}/${PN}-9.7_p1-config-tweaks.patch"
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"${FILESDIR}/${PN}-9.8_p1-musl-connect.patch"
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)
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pkg_pretend() {
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local i enabled_eol_flags disabled_eol_flags
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for i in hpn sctp X509; do
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if has_version "net-misc/openssh[${i}]"; then
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enabled_eol_flags+="${i},"
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disabled_eol_flags+="-${i},"
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fi
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done
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if [[ -n ${enabled_eol_flags} && ${OPENSSH_EOL_USE_FLAGS_I_KNOW_WHAT_I_AM_DOING} != yes ]]; then
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# Skip for binary packages entirely because of environment saving, bug #907892
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[[ ${MERGE_TYPE} == binary ]] && return
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ewarn "net-misc/openssh does not support USE='${enabled_eol_flags%,}' anymore."
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ewarn "The Base system team *STRONGLY* recommends you not rely on this functionality,"
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ewarn "since these USE flags required third-party patches that often trigger bugs"
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ewarn "and are of questionable provenance."
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ewarn
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ewarn "If you must continue relying on this functionality, switch to"
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ewarn "net-misc/openssh-contrib. You will have to remove net-misc/openssh from your"
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ewarn "world file first: 'emerge --deselect net-misc/openssh'"
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ewarn
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ewarn "In order to prevent loss of SSH remote login access, we will abort the build."
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ewarn "Whether you proceed with disabling the USE flags or switch to the -contrib"
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ewarn "variant, when re-emerging you will have to set"
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ewarn
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ewarn " OPENSSH_EOL_USE_FLAGS_I_KNOW_WHAT_I_AM_DOING=yes"
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die "Building net-misc/openssh[${disabled_eol_flags%,}] without OPENSSH_EOL_USE_FLAGS_I_KNOW_WHAT_I_AM_DOING=yes"
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fi
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# Make sure people who are using tcp wrappers are notified of its removal. #531156
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if grep -qs '^ *sshd *:' "${EROOT}"/etc/hosts.{allow,deny} ; then
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ewarn "Sorry, but openssh no longer supports tcp-wrappers, and it seems like"
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ewarn "you're trying to use it. Update your ${EROOT}/etc/hosts.{allow,deny} please."
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fi
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}
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src_prepare() {
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# don't break .ssh/authorized_keys2 for fun
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sed -i '/^AuthorizedKeysFile/s:^:#:' sshd_config || die
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[[ -d ${WORKDIR}/patches ]] && PATCHES+=( "${WORKDIR}"/patches )
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default
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# These tests are currently incompatible with PORTAGE_TMPDIR/sandbox
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sed -e '/\t\tpercent \\/ d' \
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-i regress/Makefile || die
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tc-export PKG_CONFIG
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local sed_args=(
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-e "s:-lcrypto:$(${PKG_CONFIG} --libs openssl):"
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# Disable fortify flags ... our gcc does this for us
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-e 's:-D_FORTIFY_SOURCE=2::'
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)
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# _XOPEN_SOURCE causes header conflicts on Solaris
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[[ ${CHOST} == *-solaris* ]] && sed_args+=(
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-e 's/-D_XOPEN_SOURCE//'
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)
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sed -i "${sed_args[@]}" configure{.ac,} || die
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eautoreconf
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}
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src_configure() {
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addwrite /dev/ptmx
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use debug && append-cppflags -DSANDBOX_SECCOMP_FILTER_DEBUG
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use static && append-ldflags -static
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use xmss && append-cflags -DWITH_XMSS
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if [[ ${CHOST} == *-solaris* ]] ; then
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# Solaris' glob.h doesn't have things like GLOB_TILDE, configure
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# doesn't check for this, so force the replacement to be put in
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# place
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append-cppflags -DBROKEN_GLOB
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fi
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# use replacement, RPF_ECHO_ON doesn't exist here
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[[ ${CHOST} == *-darwin* ]] && export ac_cv_func_readpassphrase=no
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local myconf=(
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--with-ldflags="${LDFLAGS}"
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--disable-strip
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--with-pid-dir="${EPREFIX}"$(usex kernel_linux '' '/var')/run
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--sysconfdir="${EPREFIX}"/etc/ssh
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--libexecdir="${EPREFIX}"/usr/$(get_libdir)/misc
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--datadir="${EPREFIX}"/usr/share/openssh
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--with-privsep-path="${EPREFIX}"/var/empty
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--with-privsep-user=sshd
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# optional at runtime; guarantee a known path
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--with-xauth="${EPREFIX}"/usr/bin/xauth
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# --with-hardening adds the following in addition to flags we
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# already set in our toolchain:
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# * -ftrapv (which is broken with GCC anyway),
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# * -ftrivial-auto-var-init=zero (which is nice, but not the end of
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# the world to not have)
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# * -fzero-call-used-regs=used (history of miscompilations with
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# Clang (bug #872548), ICEs on m68k (bug #920350, gcc PR113086,
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# gcc PR104820, gcc PR104817, gcc PR110934)).
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#
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# Furthermore, OSSH_CHECK_CFLAG_COMPILE does not use AC_CACHE_CHECK,
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# so we cannot just disable -fzero-call-used-regs=used.
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#
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# Therefore, just pass --without-hardening, given it doesn't negate
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# our already hardened toolchain defaults, and avoids adding flags
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# which are known-broken in both Clang and GCC and haven't been
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# proven reliable.
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--without-hardening
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$(use_with audit audit linux)
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$(use_with kerberos kerberos5 "${EPREFIX}"/usr)
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$(use_with ldns)
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$(use_with libedit)
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$(use_with pam)
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$(use_with pie)
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$(use_with selinux)
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$(use_with security-key security-key-builtin)
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$(use_with ssl openssl)
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$(use_with ssl ssl-engine)
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$(use_enable dss dsa-keys)
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)
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if use elibc_musl; then
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# musl defines bogus values for UTMP_FILE and WTMP_FILE (bug #753230)
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myconf+=( --disable-utmp --disable-wtmp )
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fi
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# Workaround for Clang 15 miscompilation with -fzero-call-used-regs=all
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# bug #869839 (https://github.com/llvm/llvm-project/issues/57692)
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tc-is-clang && myconf+=( --without-hardening )
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econf "${myconf[@]}"
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}
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create_config_dropins() {
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local locale_vars=(
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# These are language variables that POSIX defines.
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# http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html#tag_08_02
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LANG LC_ALL LC_COLLATE LC_CTYPE LC_MESSAGES LC_MONETARY LC_NUMERIC LC_TIME
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# These are the GNU extensions.
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# https://www.gnu.org/software/autoconf/manual/html_node/Special-Shell-Variables.html
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LANGUAGE LC_ADDRESS LC_IDENTIFICATION LC_MEASUREMENT LC_NAME LC_PAPER LC_TELEPHONE
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)
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mkdir -p "${WORKDIR}"/etc/ssh/ssh{,d}_config.d || die
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cat <<-EOF > "${WORKDIR}"/etc/ssh/ssh_config.d/9999999gentoo.conf || die
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# Send locale environment variables (bug #367017)
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SendEnv ${locale_vars[*]}
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# Send COLORTERM to match TERM (bug #658540)
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SendEnv COLORTERM
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EOF
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cat <<-EOF > "${WORKDIR}"/etc/ssh/ssh_config.d/9999999gentoo-security.conf || die
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RevokedHostKeys "${EPREFIX}/etc/ssh/ssh_revoked_hosts"
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EOF
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cat <<-EOF > "${WORKDIR}"/etc/ssh/ssh_revoked_hosts || die
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# https://github.blog/2023-03-23-we-updated-our-rsa-ssh-host-key/
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ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAq2A7hRGmdnm9tUDbO9IDSwBK6TbQa+PXYPCPy6rbTrTtw7PHkccKrpp0yVhp5HdEIcKr6pLlVDBfOLX9QUsyCOV0wzfjIJNlGEYsdlLJizHhbn2mUjvSAHQqZETYP81eFzLQNnPHt4EVVUh7VfDESU84KezmD5QlWpXLmvU31/yMf+Se8xhHTvKSCZIFImWwoG6mbUoWf9nzpIoaSjB+weqqUUmpaaasXVal72J+UX2B+2RPW3RcT0eOzQgqlJL3RKrTJvdsjE3JEAvGq3lGHSZXy28G3skua2SmVi/w4yCE6gbODqnTWlg7+wC604ydGXA8VJiS5ap43JXiUFFAaQ==
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EOF
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cat <<-EOF > "${WORKDIR}"/etc/ssh/sshd_config.d/9999999gentoo.conf || die
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# Allow client to pass locale environment variables (bug #367017)
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AcceptEnv ${locale_vars[*]}
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# Allow client to pass COLORTERM to match TERM (bug #658540)
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AcceptEnv COLORTERM
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EOF
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cat <<-EOF > "${WORKDIR}"/etc/ssh/sshd_config.d/9999999gentoo-subsystem.conf || die
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# override default of no subsystems
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Subsystem sftp ${EPREFIX}/usr/$(get_libdir)/misc/sftp-server
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EOF
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if use pam ; then
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cat <<-EOF > "${WORKDIR}"/etc/ssh/sshd_config.d/9999999gentoo-pam.conf || die
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UsePAM yes
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# This interferes with PAM.
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PasswordAuthentication no
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# PAM can do its own handling of MOTD.
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PrintMotd no
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PrintLastLog no
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EOF
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fi
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if use livecd ; then
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cat <<-EOF > "${WORKDIR}"/etc/ssh/sshd_config.d/9999999gentoo-livecd.conf || die
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# Allow root login with password on livecds.
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PermitRootLogin Yes
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EOF
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fi
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}
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src_compile() {
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default
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create_config_dropins
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}
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src_test() {
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local tests=( compat-tests )
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local shell=$(egetshell "${UID}")
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if [[ ${shell} == */nologin ]] || [[ ${shell} == */false ]] ; then
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ewarn "Running the full OpenSSH testsuite requires a usable shell for the 'portage'"
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ewarn "user, so we will run a subset only."
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tests+=( interop-tests )
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else
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tests+=( tests )
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fi
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local -x SUDO= SSH_SK_PROVIDER= TEST_SSH_UNSAFE_PERMISSIONS=1
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mkdir -p "${HOME}"/.ssh || die
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emake -j1 "${tests[@]}" </dev/null
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}
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src_install() {
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emake install-nokeys DESTDIR="${D}"
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fperms 600 /etc/ssh/sshd_config
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dobin contrib/ssh-copy-id
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newinitd "${FILESDIR}"/sshd-r1.initd sshd
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newconfd "${FILESDIR}"/sshd-r1.confd sshd
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if use pam; then
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newpamd "${FILESDIR}"/sshd.pam_include.2 sshd
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fi
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doman contrib/ssh-copy-id.1
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dodoc ChangeLog CREDITS OVERVIEW README* TODO sshd_config
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rmdir "${ED}"/var/empty || die
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systemd_dounit "${FILESDIR}"/sshd.socket
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systemd_newunit "${FILESDIR}"/sshd.service.2 sshd.service
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systemd_newunit "${FILESDIR}"/sshd_at.service.1 'sshd@.service'
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# Install dropins with explicit mode, bug 906638, 915840
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diropts -m0755
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insopts -m0644
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insinto /etc/ssh
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doins -r "${WORKDIR}"/etc/ssh/ssh_config.d
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doins "${WORKDIR}"/etc/ssh/ssh_revoked_hosts
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diropts -m0700
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insopts -m0600
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doins -r "${WORKDIR}"/etc/ssh/sshd_config.d
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}
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pkg_preinst() {
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if ! use ssl && has_version "${CATEGORY}/${PN}[ssl]"; then
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show_ssl_warning=1
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fi
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}
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pkg_postinst() {
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# bug #139235
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optfeature "x11 forwarding" x11-apps/xauth
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local old_ver
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for old_ver in ${REPLACING_VERSIONS}; do
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if ver_test "${old_ver}" -lt "5.8_p1"; then
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elog "Starting with openssh-5.8p1, the server will default to a newer key"
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elog "algorithm (ECDSA). You are encouraged to manually update your stored"
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elog "keys list as servers update theirs. See ssh-keyscan(1) for more info."
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fi
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if ver_test "${old_ver}" -lt "7.0_p1"; then
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elog "Starting with openssh-6.7, support for USE=tcpd has been dropped by upstream."
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elog "Make sure to update any configs that you might have. Note that xinetd might"
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elog "be an alternative for you as it supports USE=tcpd."
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fi
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if ver_test "${old_ver}" -lt "7.1_p1"; then #557388 #555518
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elog "Starting with openssh-7.0, support for ssh-dss keys were disabled due to their"
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elog "weak sizes. If you rely on these key types, you can re-enable the key types by"
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elog "adding to your sshd_config or ~/.ssh/config files:"
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elog " PubkeyAcceptedKeyTypes=+ssh-dss"
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elog "You should however generate new keys using rsa or ed25519."
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elog "Starting with openssh-7.0, the default for PermitRootLogin changed from 'yes'"
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elog "to 'prohibit-password'. That means password auth for root users no longer works"
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elog "out of the box. If you need this, please update your sshd_config explicitly."
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fi
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if ver_test "${old_ver}" -lt "7.6_p1"; then
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elog "Starting with openssh-7.6p1, openssh upstream has removed ssh1 support entirely."
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elog "Furthermore, rsa keys with less than 1024 bits will be refused."
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fi
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if ver_test "${old_ver}" -lt "7.7_p1"; then
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elog "Starting with openssh-7.7p1, we no longer patch openssh to provide LDAP functionality."
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elog "Install sys-auth/ssh-ldap-pubkey and use OpenSSH's \"AuthorizedKeysCommand\" option"
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elog "if you need to authenticate against LDAP."
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elog "See https://wiki.gentoo.org/wiki/SSH/LDAP_migration for more details."
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fi
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if ver_test "${old_ver}" -lt "8.2_p1"; then
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ewarn "After upgrading to openssh-8.2p1 please restart sshd, otherwise you"
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ewarn "will not be able to establish new sessions. Restarting sshd over a ssh"
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ewarn "connection is generally safe."
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fi
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if ver_test "${old_ver}" -lt "9.2_p1-r1" && systemd_is_booted; then
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ewarn "From openssh-9.2_p1-r1 the supplied systemd unit file defaults to"
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ewarn "'Restart=on-failure', which causes the service to automatically restart if it"
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ewarn "terminates with an unclean exit code or signal. This feature is useful for most users,"
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ewarn "but it can increase the vulnerability of the system in the event of a future exploit."
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ewarn "If you have a web-facing setup or are concerned about security, it is recommended to"
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ewarn "set 'Restart=no' in your sshd unit file."
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fi
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done
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if [[ -n ${show_ssl_warning} ]]; then
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elog "Be aware that by disabling openssl support in openssh, the server and clients"
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elog "no longer support dss/rsa/ecdsa keys. You will need to generate ed25519 keys"
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elog "and update all clients/servers that utilize them."
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fi
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openssh_maybe_restart
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}
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openssh_maybe_restart() {
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local ver
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declare -a versions
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read -ra versions <<<"${REPLACING_VERSIONS}"
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for ver in "${versions[@]}"; do
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# Exclude 9.8_p1 because it didn't have the safety check
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[[ ${ver} == 9.8_p1 ]] && break
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if [[ ${ver%_*} == "${PV%_*}" ]]; then
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# No major version change has occurred
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return
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fi
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done
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if [[ ${ROOT} ]]; then
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return
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elif [[ -d /run/systemd/system ]] && sshd -t >/dev/null 2>&1; then
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ewarn "The ebuild will now attempt to restart OpenSSH to avoid"
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ewarn "bricking the running instance. See bug #709748."
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ebegin "Attempting to restart openssh via 'systemctl try-restart sshd'"
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systemctl try-restart sshd
|
|
eend $?
|
|
elif [[ -d /run/openrc ]]; then
|
|
# We don't check for sshd -t here because the OpenRC init script
|
|
# has a stop_pre() which does checkconfig, i.e. we defer to it
|
|
# to give nicer output for a failed sanity check.
|
|
ewarn "The ebuild will now attempt to restart OpenSSH to avoid"
|
|
ewarn "bricking the running instance. See bug #709748."
|
|
ebegin "Attempting to restart openssh via 'rc-service -q --ifstarted --nodeps sshd restart'"
|
|
rc-service -q --ifstarted --nodeps sshd restart
|
|
eend $?
|
|
fi
|
|
}
|