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