Add script to install backuppc client for linux and mac
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#!/bin/bash
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# Automatisation de configuration backuppc pour poste linux
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# Institut de Physique de Rennes UMR6251
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# Anthony CARRÉ, Jérémy GARDAIS, Guillaume RAFFY — Mars 2016
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SUCCESS=0
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ERROR=1
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function getDefaultUser() {
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case $(uname) in
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'Darwin')
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for user in $(ListUsers); do
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echo $user
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return
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done
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;;
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'Linux')
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getent passwd "1000" | cut -d: -f1
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;;
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esac
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}
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# this performs the equivalent as adding a remote login user in system preferences using the gui
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function allowUserToConnectToThisMachineUsingSsh()
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{
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local userLogin="$1"
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case $(uname) in
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'Darwin')
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dscl . append '/Groups/com.apple.access_ssh' user "${userLogin}"
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dscl . append /Groups/com.apple.access_ssh groupmembers $(dscl . read "/Users/${userLogin}" GeneratedUID | cut -d " " -f 2)
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;;
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'Linux')
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# nothing to do?
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;;
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esac
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}
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function ensureSshdIsRunning()
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{
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case $(uname) in
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'Darwin')
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sudo launchctl list | grep 'com.openssh.sshd' &> /dev/null
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if [ $? != 0 ]; then
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# enable 'Remote login' in 'system preferences'
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launchctl load /System/Library/LaunchDaemons/ssh.plist &> /dev/null
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fi
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;;
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'Linux')
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#if [ ! -f "${hostkey}" ]; then
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if [ ! $(command -v sshd) ]; then
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printf "\nopenssh-server non installé, tentative d’installation.\n"
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if hash apt 2>/dev/null; then apt install -y openssh-server
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elif hash pacman 2>/dev/null; then pacman -Syu openssh
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elif hash yum 2>/dev/null; then yum install -y openssh-server
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elif hash zypper 2>/dev/null; then zypper install openSSH
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else printf '\e[1;31m%-6s\e[m' "Merci d’installer openssh-server sur votre machine, installation annulée."; return "$ERROR"
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fi
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# Si ssh installé par le script, le restreindre à backuppc
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configssh="/etc/ssh/sshd_config"
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if [ ! -f "${configssh}" ]; then
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echo "AllowUsers backuppc" >> "${configssh}"
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fi
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fi
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;;
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esac
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}
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function getMyHostKey() {
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local hostkey=''
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case $(uname) in
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'Darwin')
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hostkey="/etc/ssh_host_rsa_key.pub"
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if [ ! -f "${hostkey}" ]; then
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printf '\e[1;31m%-6s\e[m' "Impossible de trouver la clef ssh publique ce cette machine, installation annulée."
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return "$ERROR"
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fi
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;;
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'Linux')
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hostkey="/etc/ssh/ssh_host_ecdsa_key.pub"
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#### SI MALGRÉ L’INSTALLATION DE OPENSSH, LA CLÉ N’EST TOUJOURS PAS ACCESSIBLE
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if [ ! -f "${hostkey}" ]; then
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return "$ERROR"
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fi
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# TODO : check that sshd is running ?
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;;
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esac
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echo "${hostkey}"
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}
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function IpAddress() {
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local strMyIpAddress=''
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local strOsName=$( uname )
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case $strOsName in
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"Darwin")
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strMyIpAddress=$(dig +short myip.opendns.com @resolver1.opendns.com) ;;
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"Linux" )
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strMyIpAddress=$(wget http://checkip.dyndns.org/ -O - -o /dev/null | cut -d" " -f 6 | cut -d\< -f 1) ;;
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* )
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error "unhandled case ($strOsName)"
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return 1 ;;
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esac
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if [ "$strMyIpAddress" == '' ]; then
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error "failed to retrieve the ip address of this machine"
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return 1
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fi
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echo $strMyIpAddress
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}
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function MyFqdn() {
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local strMyIpAddress=$( IpAddress ) # eg '129.20.27.49'
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local strMyFqdn=$(host $strMyIpAddress | awk '{print $5}')
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echo ${strMyFqdn%?} # remove the trailing '.'
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}
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function ListUsers() {
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local users=''
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case $(uname) in
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'Darwin')
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for user in $(ls -d /Users/[a-zA-Z]*); do
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user=$(basename $user)
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case "$user" in
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'Shared'|'admin')
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;;
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*)
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users="$users $user"
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;;
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esac
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done
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;;
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'Linux') users="$(echo $(ls -I 'lost+found' -I 'administrateur' /home/) | sed -e 's/\///g')" ;;
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esac
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echo $users
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}
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function AddUserBackuppc() {
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local userToBackup="$1" # the login of the user to backup
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local homeDir="$2" # par exemple '/var/lib/backuppc'
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local userLogin='backuppc'
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local groupId=$(id -g $userToBackup)
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case $(uname) in
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'Darwin')
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maxid=$(dscl . -list /Users UniqueID | awk '$2 < 1000 {print $2}' | sort -ug | tail -1)
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newid=$((maxid+1))
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mkdir -p "$homeDir"
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id "$newid" &> /dev/null
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if [ $? = 0 ]; then
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echo "unable to find a suitable uid for user backuppc ($newid is already used)"
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exit $ERROR
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fi
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dscl . -create "/Users/$userLogin"
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dscl . -create "/Users/$userLogin" UserShell /bin/bash
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dscl . -create "/Users/$userLogin" RealName "backuppc"
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dscl . -create "/Users/$userLogin" UniqueID "$newid"
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dscl . -create "/Users/$userLogin" PrimaryGroupID "$groupId"
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dscl . -create "/Users/$userLogin" NFSHomeDirectory "$homeDir"
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dscl . -create "/Users/$userLogin" IsHidden 1 # hide from login window
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#dscl . -passwd "/Users/$userLogin" password
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;;
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'Linux') adduser --system --disabled-password --shell /bin/sh --home "$homeDir/" --gid "$groupId" "$userLogin" ;;
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esac
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chown -R "$userLogin:$groupId" "$homeDir"
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allowUserToConnectToThisMachineUsingSsh "${userLogin}"
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}
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#### VÉRIFIER QUE L’ON A BIEN LES DROITS ADMIN ####
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if [ "$EUID" -ne 0 ]; then
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printf '\e[1;31m%-6s\e[m' "À lancer avec les droits administrateur "
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exit
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fi
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#### NOM DU COMPTE À SAUVEGARDER ####
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default_user=$(getDefaultUser)
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printf '\e[1;34m%-6s\e[m' "liste des comptes détectés sur cette machine :\n $(ListUsers)"
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printf "\n"
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printf "login de l’utilisateur dont les données sont à sauvegarder ?\n [${default_user}] : "
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read input_login
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if [[ ${input_login} != "" ]]; then
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usr="${input_login}"
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else usr="${default_user}"
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fi
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#### VÉRIFIER QUE LE COMPTE EST BIEN DANS LA LISTE DES USER ID ####
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if ! id "${usr}" &> /dev/null; then
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printf '\e[1;35m%-6s\e[m' "${usr} n’apparait pas dans la liste des user ids. Continuer tout de même ? [o/N] : "
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read input_continue
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if [[ "${input_continue}" != "o" ]]; then
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printf '\e[1;31m%-6s\e[m' "Installation annulée."
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exit
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fi
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fi
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#### DOSSIER À SAUVEGARDER ####
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default_dir=$(eval echo ~${usr})
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if [ ! -d "${default_dir}" ]; then
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default_dir=""
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fi
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printf "Par défaut, le dossier sauvegardé est le home de l’utilisateur. Il est possible d’en ajouter un supplémentaire ensuite. Dossier à sauvegarder ? [${default_dir}] : "
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read input_dir
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if [[ "${input_dir}" == "" ]]; then
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dir1="${default_dir}"
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else dir1="${input_dir}"
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fi
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#### DOSSIER À SAUVEGARDER INTROUVABLE, ANNULATION ####
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if [ ! -d "${dir1}" ]; then
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printf "\n"
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printf '\e[1;31m%-6s\e[m' "Dossier ${dir1} introuvable, installation annulée."
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printf "\n"
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exit
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fi
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#### DOSSIER SUPPLÉMENTAIRE ####
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printf "Si vous avez un dossier supplémentaire à sauvegarder (/mnt/data par exemple) entrer-le maintenant, sinon laissez vide. [] : "
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read input_dir2
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if [[ "${input_dir2}" != "" ]]; then
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#### DOSSIER SUPPLÉMENTAIRE INTROUVABLE, ANNULATION DE CELUI-CI ####
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if [ ! -d "${input_dir2}" ]; then
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printf "\n"
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printf '\e[1;35m%-6s\e[m' "Dossier supplémentaire introuvable, non ajouté."
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printf "\n"
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else directories="'${dir1}','${input_dir2}'"
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fi
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else directories="'${dir1}'"
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fi
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#### INSTALLATION DE OPENSSH-SERVER ####
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ensureSshdIsRunning
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hostkey=$(getMyHostKey)
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#printf "hostkey=$hostkey"
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if [ "$?" != "$SUCCESS" ]; then
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printf '\e[1;31m%-6s\e[m' "Clé inaccessible, merci de contacter votre administrateur réseau, installation annulée."; exit
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fi
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#### CRÉATION DU FICHIER DE CONFIGURATION ####
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fqdn="$(MyFqdn)"
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filepl="${fqdn}.pl"
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exclude="['ownCloud','.local/share/Trash','.cache','.Play*','.steam','.wine','Perso','temp','tmp','.Trash*','.DS_Store','._*']"
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echo "\$Conf{XferMethod} = 'rsync';" > "${filepl}"
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echo "\$Conf{RsyncShareName} = [${directories}];" >> "${filepl}"
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echo "\$Conf{BackupFilesExclude} = {'*' => ${exclude} };" >> "${filepl}"
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printf "\n"
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printf '\e[1;34m%-6s\e[m' "Fichier de configuration serveur créé (${filepl})"
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printf "\n"
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#### ADRESSE MAIL DE L’UTILISATEUR ####
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printf "Votre adresse e-mail ?\n : "
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read input_mail
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#### LE SERVEUR DOIT CONNAITRE ssh_host_ecdsa_key.pub DU CLIENT, L’ADRESSE MAIL ET L'IP ####
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# mis en dernière ligne du fichier pl en attendant de trouver une meilleure solution
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echo "# host:${fqdn}" >> "${filepl}"
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cmd_hostkey=$(cat "${hostkey}")
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echo "# hostkey:${cmd_hostkey}" >> "${filepl}"
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echo "# mail:${input_mail}" >> "${filepl}"
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echo "# ip:$(IpAddress)" >> "${filepl}"
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#### AJOUTER LES DROITS EN LECTURE POUR LE GROUPE ####
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# printf '\e[1;34m%-6s\e[m' "Ajout des droits en lecture pour le groupe sur les dossiers à sauvegarder (patience !)…"
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# printf "\n"
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# for dir in "${dir1}" "${input_dir2}"; do
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# find "${dir}" \( ! -regex '.*/\..*' \) -type f -exec chmod g+r {} \;
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# find "${dir}" \( ! -regex '.*/\..*' \) -type d -exec chmod g+rx {} \;
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# done
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#### CRÉATION DE L’UTILISATEUR BACKUPPC ####
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printf '\e[1;34m%-6s\e[m' "Création du compte backuppc…"
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printf "\n"
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homebackuppc='/var/lib/backuppc'
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AddUserBackuppc "${input_login}" "${homebackuppc}"
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mkdir -p -- "${homebackuppc}/.ssh"
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echo "from=\"129.20.203.16\" ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDIhMc8ixQXfWDACJy4q0v8T877UxahhCjO51PQFzylwVpf88LX3yWeDrWIW0NRu0zoSm396mig918OpD5ggqML/QbYbQsoDdAFUV/tK4JU6UJgEQIl25MOcUBCFepsFBGS09CH/V07xSUqSP/+beeTRLNO2CQzk3S2y3YfkXpM7KmOGfeLgoCaQAcxIkgLXeM3TpCZEzJDlZ8c8k/DjVvsgwCpQktYzNo2b37KHLLfgyW9KSo6N9sReUuNQjS6lu8rjrXfc6+J0pY2D6IxWptTWL/JVrhFCUqe4QQy+xYjoR41wqnAQyl/kOcyBNhSvojMKwQT6vlPwru6pOno16/X backuppc@backuppc.ipr.univ-rennes1.fr" > $homebackuppc/.ssh/authorized_keys
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chown -R backuppc "$homebackuppc/.ssh/"
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printf "\n"
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printf '\e[1;34m%-6s\e[m' "Configuration du poste terminée."
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printf '\e[1;34m%-6s\e[m' "Envoyez bien votre fichier de configuration ($filepl) à Jéremy GARDAIS ou Anthony CARRÉ."
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printf '\e[1;34m%-6s\e[m' "Vous pourrez affiner la configuration de votre sauvegarde depuis https://backuppc.ipr.univ-rennes1.fr"
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printf "\n"
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