120 lines
3.9 KiB
Bash
Executable File
120 lines
3.9 KiB
Bash
Executable File
#!/bin/sh
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##
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# Copyright (C) 2013-2014 Janek Bevendorff
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# Website: http://www.refining-linux.org/
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#
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# Set up a backup user.
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#
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# The MIT License (MIT)
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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##
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if [ "$1" == "" ] || [ "$2" == "" ]; then
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. rs-version
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echo "Usage: $(basename $0) <remote host> <remote username> [<ssh public key file>]"
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exit
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fi
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. /etc/rs-backup/server-config
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remote_hostname="$1"
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remote_username="$2"
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ssh_key_file="$3"
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local_username="${remote_hostname}-${remote_username}"
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# config template variables
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USERNAME="${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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rsync_conf=$(eval "cat << EOF
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${rsync_conf}
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EOF")
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rsnapshot_conf=$(eval "cat << EOF
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${rsnapshot_conf}
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EOF")
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echo "${rsync_conf}" > "${HOME_DIR}/rsync.conf"
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echo "${rsnapshot_conf}" > "${HOME_DIR}/rsnapshot.conf"
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# Protect config files
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chown root:root "${HOME_DIR}/rsync.conf"
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chmod 0644 "${HOME_DIR}/rsync.conf"
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chown root:root "${HOME_DIR}/rsnapshot.conf"
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chmod 0644 "${HOME_DIR}/rsnapshot.conf"
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# Set permissions for backup directory
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chown -R "${USERNAME}:${GROUPNAME}" "${HOME_DIR}/${FILES_DIR}"
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chmod -R 0755 "${HOME_DIR}/${FILES_DIR}"
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# If SSH key file has been specified
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if [ "${ssh_key_file}" != "" ]; then
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rs-add-ssh-key "${remote_hostname}" "${remote_username}" "${ssh_key_file}"
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fi
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