From b235e1a6563a41be3c8f176b34af66777d8b9ccd Mon Sep 17 00:00:00 2001
From: Bastian Dehn <hhaalo@arcor.de>
Date: Sat, 24 May 2025 09:35:26 +0200
Subject: [PATCH] refactor restore script

---
 restore | 166 +++++++++++++++++++++++++++++---------------------------
 1 file changed, 87 insertions(+), 79 deletions(-)

diff --git a/restore b/restore
index 1ff7f12..bec455e 100755
--- a/restore
+++ b/restore
@@ -1,11 +1,18 @@
 #!/bin/bash
-# vim: tabstop=8 colorcolumn=80
 
-## @fn usage()
-## @brief Zeigt die Hilfe an
+errlog()
+{
+	local lastexit=$?
+	local msg="$1"
+
+	echo "❌ ERROR: $msg"
+	echo "🛑 EXIT: $lastexit"
+	return $lastexit
+}
+
 useage()
 {
-	echo "restore -d <Datum> -n <Nummer> -r <Rechner> -p <Pfad>"
+	echo "$0 -d <Datum> -n <Nummer> -r <Rechner> -p <Pfad>"
 	echo
 	echo " -d    Datum von der Sicherung"
 	echo " -n    Nummer von der Sicherung"
@@ -14,32 +21,89 @@ useage()
 	echo
 }
 
-## @fn SetDefaultVariables()
-## @brief setzt defaults
-SetDefaultVariables()
+print_line()
+{
+	for i in {1..80}; do
+		printf "#"
+	done
+
+	printf "\n"
+}
+
+restore()
 {
-	backpath="/images/backup"
-	backname="sicherung"
+	local date="$1"
+	local number="$2"
+	local machine="$3"
+	local path="$4"
+	local backup_root="/images/backup"
+	local backup_name="sicherung"
+
+	local remote_user=${machine%%@*}
+	local remote_machine=${machine%:*}
+	local remote_machine=${remote_machine#*@}
+	local remote_port=${machine##*:}
+	local backup_dir="$date"_"$number"_"$backup_name"
+
+	local restore_path="$backup_root/$backup_dir/$remote_machine$path"
+	local remote_path="$remote_user@$remote_machine:$path"
+
+	echo "ℹ️  INFO: restore path $restore_path"
+	echo "ℹ️  INFO: remote path $remote_path"
+	echo
+
+	local ask_restore="N"
+	read -p "❓ QUESTION: Do you want restore? [N/y] " ask_restore
+	local ask_restore=${ask_restore:-N}
+	local ask_restore=${ask_restore,,}
+	echo ${ask_restore,,}
+
+	[ "$ask_restore" == "y" ] \
+		|| errlog "you want not do restore" \
+		|| return $?
+
+	echo "ℹ️  INFO: restoring..."
+
+	rsync --archive \
+		--verbose \
+		--sparse \
+		--acls \
+		--hard-links \
+		--human-readable \
+		--rsh "ssh -p $remote_port" \
+		$restore_path \
+		$remote_path \
+		|| errlog "could not restore" \
+		|| return $?
+
+	echo "ℹ️  INFO: restored"
 }
 
-## @fn ReadArguments()
-## @brief Einlesung der Konsolenargumente
-## @param Konsolenargumente
-ReadArguments()
+main()
 {
+	local date=
+	local number=
+	local machine=
+	local path=
+
+	echo "⭐ START: restore"
+
+	head -2 license
+	echo
+
 	while getopts "d:n:r:p:h" optname; do
 		case "$optname" in
 		"d")
-			datum="$OPTARG"
+			date="$OPTARG"
 			;;
 		"n")
 			number="$OPTARG"
 			;;
 		"r")
-			rechner="$OPTARG"
+			machine="$OPTARG"
 			;;
 		"p")
-			pfad="$OPTARG"
+			path="$OPTARG"
 			;;
 		"h")
 			useage
@@ -48,71 +112,15 @@ ReadArguments()
 		esac
 	done
 
-	if [ -z "$datum" ] || [ -z "$rechner" ] || [ -z "$pfad" ] \
-		|| [ -z "$number" ]; then
-		printf "Es fehlen Parameter!\n"
-		exit 1
-	fi
-}
-
-## @fn printStripLine()
-## @brief Gibt einen Trennungsstreifen auf der Konsole aus
-printfStripLine()
-{
-	printf "####################"
-	printf "####################"
-	printf "####################"
-	printf "####################\n"
-}
+	[ -n "$date" ] || errlog "missing date (-d)" || return $?
+	[ -n "$number" ] || errlog "missing number (-n)" || return $?
+	[ -n "$machine" ] || errlog "missing machine (-r)" || return $?
+	[ -n "$path" ] || errlog "missing path (-p)" || return $?
 
-## @fn RestoreData()
-## @brief Wiederherstellung der Daten
-RestoreData()
-{
-	remoteuser=$(echo $rechner | sed 's/\(.*\)@.*/\1/')
-	remoterechner=$(echo $rechner | sed 's/.*@\(.*\):.*/\1/')
-	remoteport=$(echo $rechner | sed 's/.*@.*:\(.*\)/\1/')
-	remoteLogin=$remoteuser@$remoterechner
-	backDir="$datum"_"$number"_"$backname"
-	fullPathBackPath="$backpath/$backDir"
-	local restoreLog="$backpath/restore-$(date +%Y-%m-%d).log"
-
-	savelog -nJ9 $backpath/restore-*.log
-
-	printfStripLine
-	printf "Daten werden wiederhergestellt\n\n" \
-		| tee $restoreLog
-	printf "vom Datum: %s\n" "$datum" \
-		| tee -a $restoreLog
-	printf "Nummer: %s\n" "$number" \
-		| tee -a $restoreLog
-	printf "Rechner: %s\n" "$rechner" \
-		| tee -a $restoreLog
-	printf "Pfad: %s\n\n" "$pfad" \
-		| tee -a $restoreLog
-	printf "rsync --archive --verbose --sparse --acls --hard-links \
---human-readable --rsh \"ssh -p %s\" --log-file %s/%s %s/%s/%s %s:%s\n\n" \
-	"$remoteport" "$backpath" "$restoreLog" "$fullPathBackPath" \
-	"$remoterechner" "$pfad" "$remoteLogin" "$pfad" | tee -a $restoreLog
-	printfStripLine
-
-
-	rsync --archive --verbose --sparse --acls --hard-links \
-		--human-readable \
-		--rsh "ssh -p $remoteport" \
-		--log-file $restoreLog $fullPathBackPath/$remoterechner/$pfad \
-		$remoteLogin:$pfad
-}
+	restore "$date" "$number" "$machine" "$path" \
+		|| return $?
 
-## @fn main()
-## @brief Ablauf des Skripts
-main()
-{
-	head -2 license
-	echo
-	SetDefaultVariables
-	ReadArguments $*
-	RestoreData
+	echo "✅ SUCCESS: restore"
 }
 
 main $*
-- 
2.47.3