evobackup/lib/bkctld-port

#!/bin/sh
#
# Set or get ssh port of <jailname>
# Usage: port <jailname> [<port>|auto]
#

# shellcheck source=./includes
LIBDIR="$(dirname $0)" && . "${LIBDIR}/includes"

jail_name="${1:?}"
port="${2:-}"

if [ ! -n "${jail_name}" ]; then
    "${LIBDIR}/bkctld-help" && exit 1
fi
jail_path=$(jail_path "${jail_name}")

test -d "${jail_path}" || error "${jail_name}: jail is missing."

jail_sshd_config="${jail_path}/${SSHD_CONFIG}"

if [ -z "${port}" ]; then
    grep -E "Port [0-9]+" "${jail_sshd_config}"|grep -oE "[0-9]+"
else
    if [ "${port}" = "auto" ]; then
        port=$(grep -h Port "${JAILDIR}"/*/"${SSHD_CONFIG}" 2>/dev/null | grep -Eo "[0-9]+" | sort -n | tail -1)
        port=$((port+1))
        [ "${port}" -le 1 ] && port=2222
    fi
    sed -i "s/^Port .*/Port ${port}/" "${jail_sshd_config}"

    notice "${jail_name}: port has been updated to ${port}"

    "${LIBDIR}/bkctld-reload" "${jail_name}"
    "${LIBDIR}/bkctld-firewall" "${jail_name}"
fi