Add support for Synology DSM, make user group configurable and create it if it does not exist
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@ -1,6 +1,9 @@
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# Base directory for all backups
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BACKUP_ROOT="/bkp"
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# Backup user group
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USER_GROUP="backup"
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# Directory containing the actual backup files (relative to BACKUP_ROOT/<user>)
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FILES_DIR="files"
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@ -20,14 +20,57 @@ remote_username="$2"
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ssh_key_file="$3"
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local_username="${remote_hostname}-${remote_username}"
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useradd -G backup -b "${BACKUP_ROOT}" -m -k /etc/rs-skel -p '*' -s /bin/bash "${local_username}"
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rs-update-passwd
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# Generate config files from templates
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# config template variables
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USERNAME="${local_username}"
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GROUPNAME="${local_username}"
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HOME_DIR="${BACKUP_ROOT}/${local_username}"
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# Detect distribution
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distribution=$(rs-detect-distribution)
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# Synology DSM
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if [[ "Synology" == ${distribution} ]]; then
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GROUPNAME="users"
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# Create group if it does not exist
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synogroup --get "${USER_GROUP}" > /dev/null 2>&1
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if [ $? -ne 0 ]; then
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synogroup --add "${USER_GROUP}" > /dev/null
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synogroup --descset "${USER_GROUP}" "rs-backup group" > /dev/null
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fi
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# Create (disabled) user
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synouser --add "${USERNAME}" "" "" 1 "" 0
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sed -i "s:^\(${USERNAME/./\\.}\)\:[^\:]*\::\1\:*\::" /etc/shadow
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# Re-enable user, set description
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synouser --modify "${USERNAME}" "rs-backup user" 0 ""
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# Add user to group (Synology Y U so complicated?!)
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members=$(synogroup --get "${USER_GROUP}" | grep -o "^[0-9]\+:\[.\+\]\$" | sed "s/[0-9]\+:\[\(.\+\)\]/\1/g")
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synogroup --member "${USER_GROUP}" "${USERNAME}" ${members} > /dev/null
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# Set correct home dir and shell
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sed -i "s:^\(${USERNAME/./\\.}\:.\+\:\)[^\:]\+\:/sbin/nologin\$:\1${HOME_DIR//:/\:}\:/bin/ash:" /etc/passwd
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# Create home dir
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rmdir "/var/services/homes/${USERNAME}"
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cp -R /etc/rs-skel "${HOME_DIR}"
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chmod 0700 "${HOME_DIR}"
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chown -R "${USERNAME}:${GROUPNAME}" "${HOME_DIR}"
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# "Normal" Linux systems
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else
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# Create group if it does not exist
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if ! grep -q "^${USER_GROUP}:" /etc/group; then
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groupadd "${USER_GROUP}"
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fi
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useradd -G "${USER_GROUP}" -b "${BACKUP_ROOT}" -m -k /etc/rs-skel -p '*' -s /bin/bash -c "rs-backup user" "${local_username}"
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fi
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rs-update-passwd
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# Generate config files from templates
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rsync_conf="$(cat /etc/rs-backup/rsync.conf.template)"
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rsnapshot_conf="$(cat /etc/rs-backup/rsnapshot.conf.template)"
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