eea.docker.rsync/docker-entrypoint.sh
2022-11-20 11:47:28 +01:00

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#!/bin/sh
################################################################################
# INIT
################################################################################
mkdir -p /root/.ssh
> /root/.ssh/authorized_keys
chmod go-rwx /root/.ssh/authorized_keys
sed -i "s/.*PasswordAuthentication .*/PasswordAuthentication no/g" /etc/ssh/sshd_config
sed -i 's/root:!/root:*/' /etc/shadow
if [ "$RSYNC_UID" != "" ] && [ "$RSYNC_GID" != "" ]; then
# UID and GID provided, create user
echo "UID and GID provided: $RSYNC_UID and $RSYNC_GID. Creating the user"
echo "rsyncuser:x:$RSYNC_UID:$RSYNC_GID::/home/rsyncuser:/bin/sh" >> /etc/passwd
echo "users:x:$RSYNC_GID:rsyncuser" >> /etc/group
RSYNC_USER=rsyncuser
RSYNC_GROUP=users
else
# UID and GID not provided
echo "UID and GID are NOT provided. Proceeding as the root user."
RSYNC_USER=root
RSYNC_GROUP=root
fi
# Provide SSH_AUTH_KEY_* via environment variable
for item in `env`; do
case "$item" in
SSH_AUTH_KEY*)
ENVVAR=`echo $item | cut -d \= -f 1`
printenv $ENVVAR >> /root/.ssh/authorized_keys
;;
esac
done
# Provide CRON_TASK_* via environment variable
> /etc/crontabs/root
for item in `env`; do
case "$item" in
CRON_TASK*)
ENVVAR=`echo $item | cut -d \= -f 1`
printenv $ENVVAR >> /etc/crontabs/root
echo "root" > /etc/crontabs/cron.update
;;
esac
done
# Generate host SSH keys
if [ ! -e /etc/ssh/ssh_host_rsa_key.pub ]; then
ssh-keygen -A
fi
# Generate root SSH key
if [ ! -e /root/.ssh/id_rsa.pub ]; then
ssh-keygen -q -N "" -f /root/.ssh/id_rsa
fi
################################################################################
# START as SERVER
################################################################################
if [ "$1" == "server" ]; then
AUTH=`cat /root/.ssh/authorized_keys`
if [ -z "$AUTH" ]; then
echo "=================================================================================="
echo "ERROR: No SSH_AUTH_KEY provided, you'll not be able to connect to this container. "
echo "=================================================================================="
exit 1
fi
SSH_PARAMS="-D -e -p ${SSH_PORT:-22} $SSH_PARAMS"
echo "================================================================================"
echo "Running: /usr/sbin/sshd $SSH_PARAMS "
echo "================================================================================"
su-exec $RSYNC_USER:$RSYNC_GROUP /usr/sbin/sshd -D $SSH_PARAMS
fi
echo "Please add this ssh key to your server /home/user/.ssh/authorized_keys "
echo "================================================================================"
echo "`cat /root/.ssh/id_rsa.pub`"
echo "================================================================================"
################################################################################
# START as CLIENT via crontab
################################################################################
if [ "$1" == "client" ]; then
su-exec $RSYNC_USER:$RSYNC_GROUP /usr/sbin/crond -f
fi
################################################################################
# Anything else
################################################################################
su-exec $RSYNC_USER:$RSYNC_GROUP "$@"