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