100 lines
3.2 KiB
Bash
Executable file
100 lines
3.2 KiB
Bash
Executable file
#!/bin/bash
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# Start Script for docker-borgserver
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PUID=${PUID:-1000}
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PGID=${PGID:-1000}
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usermod -o -u "$PUID" borg &>/dev/null
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groupmod -o -g "$PGID" borg &>/dev/null
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BORG_DATA_DIR=/backup
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SSH_KEY_DIR=/sshkeys
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BORG_CMD='cd ${BORG_DATA_DIR}/${client_name}; borg serve --restrict-to-path ${BORG_DATA_DIR}/${client_name} ${BORG_SERVE_ARGS}'
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AUTHORIZED_KEYS_PATH=/home/borg/.ssh/authorized_keys
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# Append only mode?
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BORG_APPEND_ONLY=${BORG_APPEND_ONLY:=no}
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source /etc/os-release
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echo "########################################################"
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echo -n " * Docker BorgServer powered by "
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borg -V
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echo " * Based on ${PRETTY_NAME}"
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echo "########################################################"
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echo " * User id: $(id -u borg)"
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echo " * Group id: $(id -g borg)"
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echo "########################################################"
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# Precheck if BORG_ADMIN is set
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if [ "${BORG_APPEND_ONLY}" == "yes" ] && [ -z "${BORG_ADMIN}" ] ; then
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echo "WARNING: BORG_APPEND_ONLY is active, but no BORG_ADMIN was specified!"
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fi
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# Precheck directories & client ssh-keys
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for dir in BORG_DATA_DIR SSH_KEY_DIR ; do
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dirpath=$(eval echo '$'${dir})
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echo " * Testing Volume ${dir}: ${dirpath}"
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if [ ! -d "${dirpath}" ] ; then
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echo "ERROR: ${dirpath} is no directory!"
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exit 1
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fi
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if [ "$(find ${SSH_KEY_DIR}/clients ! -regex '.*/\..*' -a -type f | wc -l)" == "0" ] ; then
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echo "ERROR: No SSH-Pubkey file found in ${SSH_KEY_DIR}"
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exit 1
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fi
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done
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# Create SSH-Host-Keys on persistent storage, if not exist
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mkdir -p ${SSH_KEY_DIR}/host 2>/dev/null
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echo " * Checking / Preparing SSH Host-Keys..."
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for keytype in ed25519 rsa ; do
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if [ ! -f "${SSH_KEY_DIR}/host/ssh_host_${keytype}_key" ] ; then
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echo " ** Creating SSH Hostkey [${keytype}]..."
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ssh-keygen -q -f "${SSH_KEY_DIR}/host/ssh_host_${keytype}_key" -N '' -t ${keytype}
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fi
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done
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echo "########################################################"
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echo " * Starting SSH-Key import..."
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# Add every key to borg-users authorized_keys
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rm ${AUTHORIZED_KEYS_PATH} &>/dev/null
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for keyfile in $(find "${SSH_KEY_DIR}/clients" ! -regex '.*/\..*' -a -type f); do
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client_name=$(basename ${keyfile})
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mkdir ${BORG_DATA_DIR}/${client_name} 2>/dev/null
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echo " ** Adding client ${client_name} with repo path ${BORG_DATA_DIR}/${client_name}"
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# If client is $BORG_ADMIN unset $client_name, so path restriction equals $BORG_DATA_DIR
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# Otherwise add --append-only, if enabled
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borg_cmd=${BORG_CMD}
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if [ "${client_name}" == "${BORG_ADMIN}" ] ; then
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echo " ** Client '${client_name}' is BORG_ADMIN! **"
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unset client_name
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elif [ "${BORG_APPEND_ONLY}" == "yes" ] ; then
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borg_cmd="${BORG_CMD} --append-only"
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fi
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echo -n "restrict,command=\"$(eval echo -n \"${borg_cmd}\")\" " >> ${AUTHORIZED_KEYS_PATH}
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cat ${keyfile} >> ${AUTHORIZED_KEYS_PATH}
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echo >> ${AUTHORIZED_KEYS_PATH}
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done
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chmod 0600 "${AUTHORIZED_KEYS_PATH}"
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echo " * Validating structure of generated ${AUTHORIZED_KEYS_PATH}..."
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ERROR=$(ssh-keygen -lf ${AUTHORIZED_KEYS_PATH} 2>&1 >/dev/null)
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if [ $? -ne 0 ]; then
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echo "ERROR: ${ERROR}"
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exit 1
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fi
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chown -R borg:borg ${BORG_DATA_DIR}
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chown borg:borg ${AUTHORIZED_KEYS_PATH}
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chmod 600 ${AUTHORIZED_KEYS_PATH}
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echo "########################################################"
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echo " * Init done! Starting SSH-Daemon..."
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/usr/sbin/sshd -D -e
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