#!/sbin/openrc-run # Copyright 1999-2021 Gentoo Authors # Distributed under the terms of the GNU General Public License v2 extra_commands="checkconfig" extra_started_commands="reload" : ${SSHD_CONFDIR:=${RC_PREFIX%/}/etc/ssh} : ${SSHD_CONFIG:=${SSHD_CONFDIR}/sshd_config} : ${SSHD_PIDFILE:=${RC_PREFIX%/}/run/${SVCNAME}.pid} : ${SSHD_BINARY:=${RC_PREFIX%/}/usr/sbin/sshd} : ${SSHD_KEYGEN_BINARY:=${RC_PREFIX%/}/usr/bin/ssh-keygen} command="${SSHD_BINARY}" pidfile="${SSHD_PIDFILE}" command_args="${SSHD_OPTS} -o PidFile=${pidfile} -f ${SSHD_CONFIG}" # Wait one second (length chosen arbitrarily) to see if sshd actually # creates a PID file, or if it crashes for some reason like not being # able to bind to the address in ListenAddress (bug 617596). : ${SSHD_SSD_OPTS:=--wait 1000} start_stop_daemon_args="${SSHD_SSD_OPTS}" depend() { # Entropy can be used by ssh-keygen, among other things, but # is not strictly required (bug 470020). use logger dns entropy if [ "${rc_need+set}" = "set" ] ; then : # Do nothing, the user has explicitly set rc_need else local x warn_addr for x in $(awk '/^ListenAddress/{ print $2 }' "$SSHD_CONFIG" 2>/dev/null) ; do case "${x}" in 0.0.0.0|0.0.0.0:*) ;; ::|\[::\]*) ;; *) warn_addr="${warn_addr} ${x}" ;; esac done if [ -n "${warn_addr}" ] ; then need net ewarn "You are binding an interface in ListenAddress statement in your sshd_config!" ewarn "You must add rc_need=\"net.FOO\" to your ${RC_PREFIX%/}/etc/conf.d/sshd" ewarn "where FOO is the interface(s) providing the following address(es):" ewarn "${warn_addr}" fi fi } checkconfig() { checkpath --mode 0755 --directory "${RC_PREFIX%/}/var/empty" if [ ! -e "${SSHD_CONFIG}" ] ; then eerror "You need an ${SSHD_CONFIG} file to run sshd" eerror "There is a sample file in /usr/share/doc/openssh" return 1 fi ${SSHD_KEYGEN_BINARY} -A || return 2 "${command}" -t ${command_args} || return 3 } start_pre() { # Make sure that the user's config isn't busted before we try # to start the daemon (this will produce better error messages # than if we just try to start it blindly). # # We always need to call checkconfig because this function will # also generate any missing host key and you can start a # non-running service with "restart" argument. checkconfig || return $? } stop_pre() { if [ "${RC_CMD}" = "restart" ] ; then # If this is a restart, check to make sure the user's config # isn't busted before we stop the running daemon. checkconfig || return $? elif yesno "${RC_GOINGDOWN}" && [ -s "${pidfile}" ] && hash pgrep 2>/dev/null ; then # Disconnect any clients before killing the master process local pid=$(cat "${pidfile}" 2>/dev/null) if [ -n "${pid}" ] ; then local ssh_session_pattern='sshd: \S.*@pts/[0-9]+' IFS="${IFS}@" local daemon pid pty user pgrep -a -P ${pid} -f "$ssh_session_pattern" | while read pid daemon user pty ; do ewarn "Found ${daemon%:} session ${pid} on ${pty}; sending SIGTERM ..." kill "${pid}" || true done fi fi } reload() { checkconfig || return $? ebegin "Reloading ${SVCNAME}" start-stop-daemon --signal HUP --pidfile "${pidfile}" eend $? }