docker-borgserver/data/create-client-dirs.sh
Pietro 0108fcf653
Split run.sh and add git retrival
This patch modularize run.sh, adding two new helper scripts and
make it possible to specify a git repository for ssh keys via a
new env variable `BORG_SSHKEYS_REPO`.

the modularization add two new files :
- `env.sh` : define a few envriroment variables
- `create-client-dirs.sh`  : update and create user directories and
  re-create authorized_keys

We also add a new script `update-ssh-keys.sh` to be called regurlarly
in a cron job to check if the git repository is up-to-date and
eventually adding/removing users.
2020-03-24 14:03:24 +01:00

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#!/bin/bash
set -e
source env.sh
function error_exit {
echo
echo "$@"
if [ -e "${AUTHORIZED_KEYS_PATH}.bkp" ]; then
echo "Restore authorized_keys backup ${AUTHORIZED_KEYS_PATH}.bkp"
mv "${AUTHORIZED_KEYS_PATH}.bkp" "${AUTHORIZED_KEYS_PATH}"
fi
exit 1
}
#Trap the killer signals so that we can exit with a good message.
trap "error_exit 'Received signal SIGHUP'" SIGHUP
trap "error_exit 'Received signal SIGINT'" SIGINT
trap "error_exit 'Received signal SIGTERM'" SIGTERM
echo "######################################################"
echo "* Regenerate borgserver authorized_keys *"
echo "######################################################"
if [ -e "${AUTHORIZED_KEYS_PATH}" ]; then
cp "${AUTHORIZED_KEYS_PATH}" "${AUTHORIZED_KEYS_PATH}.bkp"
rm "${AUTHORIZED_KEYS_PATH}"
fi
# Add every key to borg-users authorized_keys
for keyfile in $(find "${SSH_KEY_DIR}/clients" ! -regex '.*/\..*' -a -type f); do
client_name=$(basename ${keyfile})
echo "Add $client_name ssh key"
if [ ! -d "${BORG_DATA_DIR}/${client_name}" ]; then
mkdir "${BORG_DATA_DIR}/${client_name}" #2>/dev/null
echo " ** Adding client ${client_name} with repo path ${BORG_DATA_DIR}/${client_name}"
else
echo "Directory ${BORG_DATA_DIR}/${client_name} exists: Nothing to do"
fi
# If client is $BORG_ADMIN unset $client_name, so path restriction equals $BORG_DATA_DIR
# Otherwise add --append-only, if enabled
borg_cmd=${BORG_CMD}
if [ "${client_name}" == "${BORG_ADMIN}" ] ; then
echo " ** Client '${client_name}' is BORG_ADMIN! **"
unset client_name
elif [ "${BORG_APPEND_ONLY}" == "yes" ] ; then
borg_cmd="${BORG_CMD} --append-only"
fi
echo -n "command=\"$(eval echo -n \"${borg_cmd}\")\" " >> ${AUTHORIZED_KEYS_PATH}
cat ${keyfile} >> ${AUTHORIZED_KEYS_PATH}
done
echo " * Validating structure of generated ${AUTHORIZED_KEYS_PATH}..."
ERROR=$(ssh-keygen -lf ${AUTHORIZED_KEYS_PATH} 2>&1 >/dev/null)
if [ $? -ne 0 ]; then
echo "ERROR: ${ERROR}"
exit 1
fi
chown -R borg:borg ${BORG_DATA_DIR}
chown borg:borg ${AUTHORIZED_KEYS_PATH}
chmod 600 ${AUTHORIZED_KEYS_PATH}
rm -f ${AUTHORIZED_KEYS_PATH}.bkp