Add functions for backuppc user

Create the user.
Allow the backuppc user to use rsync with sudo without password.

install_backuppc_mac.sh

@@ -94,6 +94,63 @@ function ListUsers() {
 	echo $users
 }
 
+# AddUserBackuppc {{{
+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 $userToBackup)
+	maxid=$(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 $ERROR
+	fi
+
+	# Create user
+	#dscl . -create "/Users/$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
+	printf '\e[1;31m%-6s\e[m\n' "DEBUG : Création de l'utilisateur ${userLogin}."
+
+	# Homedir permissions
+	#chown -R "$userLogin:$groupId" "$homeDir"
+	printf '\e[1;31m%-6s\e[m\n' "DEBUG : chown -R $userLogin:$groupId $homeDir"
+
+	allowUserToConnectToThisMachineUsingSsh "${userLogin}"
+
+	AllowBackuppcSudo
+}
+# }}}
+
+# AllowBackuppcSudo {{{
+function AllowBackuppcSudo() {
+	# Get the configuration directory for sudoers
+	if [ -f /etc/sudoers ]; then
+		local sudoersDir=$(grep "^#includedir " /etc/sudoers | cut -d" " -f2)
+	elif [ -f /private/etc/sudoers ]; then
+		local sudoersDir=$(grep "^#includedir " /private/etc/sudoers | cut -d" " -f2)
+	else
+		printf '\e[1;31m%-6s\e[m\n' "Unable to find sudo configuration file."
+		return "$ERROR"
+	fi
+
+	#sudo mkdir -p -- "${sudoersDir}"
+	printf '\e[1;31m%-6s\e[m\n' "DEBUG : Création du dossier ${sudoersDir}."
+
+	# Allow user to use rsync with sudo
+	#sudo sh -c "echo '${userLogin} ALL=(ALL:ALL)  NOEXEC:NOPASSWD: /usr/bin/rsync' > ${sudoersDir}/backuppc_noexec"
+	printf '\e[1;31m%-6s\e[m\n' "DEBUG : ajout de '${userLogin} ALL=(ALL:ALL)  NOEXEC:NOPASSWD: /usr/bin/rsync'"
+	printf '\e[1;31m%-6s\e[m\n' "DEBUG : dans le fichier ${sudoersDir}/backuppc_noexec."
+}
+# }}}
+
 #### VÉRIFIER QUE L’ON A BIEN LES DROITS ADMIN ####
 if [ "$EUID" -ne 0 ]; then
 	printf '\e[1;31m%-6s\e[m' "À lancer avec les droits administrateur "