v2.3.0: Bugfix double slashes; exit on error; optimizations

[nextcloud-backup-restore.git] / NextcloudRestore.sh

diff --git a/NextcloudRestore.sh b/NextcloudRestore.sh
index fcb6589db220e735bdfb1b83a5ddd47327df2066..a18ecd0f7e46478a9567c70b43336ae4250f28eb 100644 (file)
--- a/NextcloudRestore.sh
+++ b/NextcloudRestore.sh
@@ -3,13 +3,20 @@
 #
 # Bash script for restoring backups of Nextcloud.
 #
-# Version 2.1.3
+# Version 2.3.0
+#
+# Requirements:
+#      - pigz (https://zlib.net/pigz/) for using backup compression. If not available, you can use another compression algorithm (e.g. gzip)
+#
+# Supported database systems:
+#      - MySQL/MariaDB
+#      - PostgreSQL
 #
 # Usage:
 #   - With backup directory specified in the script: ./NextcloudRestore.sh <BackupName> (e.g. ./NextcloudRestore.sh 20170910_132703)
 #   - With backup directory specified by parameter: ./NextcloudRestore.sh <BackupName> <BackupDirectory> (e.g. ./NextcloudRestore.sh 20170910_132703 /media/hdd/nextcloud_backup)
 #
-# The script is based on an installation of Nextcloud using nginx and MariaDB, see https://decatec.de/home-server/nextcloud-auf-ubuntu-server-18-04-lts-mit-nginx-mariadb-php-lets-encrypt-redis-und-fail2ban/
+# The script is based on an installation of Nextcloud using nginx and MariaDB, see https://decatec.de/home-server/nextcloud-auf-ubuntu-server-20-04-lts-mit-nginx-mariadb-php-lets-encrypt-redis-und-fail2ban/
 #
 
 #
@@ -18,6 +25,9 @@
 # All entries which need to be customized are tagged with "TODO".
 #
 
+# Make sure the script exits when any command fails
+set -Eeuo pipefail
+
 # Variables
 restore=$1
 backupMainDir=$2
@@ -29,10 +39,14 @@ fi
 
 echo "Backup directory: $backupMainDir"
 
+currentRestoreDir="${backupMainDir}/${restore}"
+
 # TODO: Set this to true, if the backup was created with compression enabled, otherwiese false.
 useCompression=true
 
-currentRestoreDir="${backupMainDir}/${restore}"
+# TOOD: The bare tar command for using compression.
+# Use 'tar -xmpzf' if you want to use gzip compression.
+compressionCommand="tar -I pigz -cpf"
 
 # TODO: The directory of your Nextcloud installation (this is a directory under your web root)
 nextcloudFileDir='/var/www/nextcloud'
@@ -63,6 +77,9 @@ dbUser='nextcloud_db_user'
 # TODO: The password of the Nextcloud database user
 dbPassword='mYpAsSw0rd'
 
+# TODO: Uncomment this and set to true if the database from the backup DOES NOT use UTF8 with multibyte support (e.g. for emoijs in filenames)
+#dbNoMultibyte=true
+
 # File names for backup files
 # If you prefer other file names, you'll also have to change the NextcloudBackup.sh script.
 fileNameBackupFileDir='nextcloud-filedir.tar'
@@ -186,7 +203,7 @@ fi
 echo "$(date +"%H:%M:%S"): Restoring Nextcloud file directory..."
 
 if [ "$useCompression" = true ] ; then
-    tar -I pigz -xmpf "${currentRestoreDir}/${fileNameBackupFileDir}" -C "${nextcloudFileDir}"
+    `$compressionCommand "${currentRestoreDir}/${fileNameBackupFileDir}" -C "${nextcloudFileDir}"`
 else
     tar -xmpf "${currentRestoreDir}/${fileNameBackupFileDir}" -C "${nextcloudFileDir}"
 fi
@@ -198,7 +215,7 @@ echo
 echo "$(date +"%H:%M:%S"): Restoring Nextcloud data directory..."
 
 if [ "$useCompression" = true ] ; then
-    tar -I pigz -xmpf "${currentRestoreDir}/${fileNameBackupDataDir}" -C "${nextcloudDataDir}"
+    `$compressionCommand "${currentRestoreDir}/${fileNameBackupDataDir}" -C "${nextcloudDataDir}"`
 else
     tar -xmpf "${currentRestoreDir}/${fileNameBackupDataDir}" -C "${nextcloudDataDir}"
 fi
@@ -208,10 +225,10 @@ echo
 
 # Local external storage
 if [ ! -z "${nextcloudLocalExternalDataDir+x}" ] ; then
-    echo "$(date +"%H:%M:%S"): Restoring Nextcloud data directory..."
+    echo "$(date +"%H:%M:%S"): Restoring Nextcloud local external storage directory..."
     
     if [ "$useCompression" = true ] ; then
-        tar -I pigz -xmpf "${currentRestoreDir}/${fileNameBackupExternalDataDir}" -C "${nextcloudLocalExternalDataDir}"
+        `$compressionCommand "${currentRestoreDir}/${fileNameBackupExternalDataDir}" -C "${nextcloudLocalExternalDataDir}"`
     else
         tar -xmpf "${currentRestoreDir}/${fileNameBackupExternalDataDir}" -C "${nextcloudLocalExternalDataDir}"
     fi
@@ -237,10 +254,13 @@ echo
 echo "$(date +"%H:%M:%S"): Creating new DB for Nextcloud..."
 
 if [ "${databaseSystem,,}" = "mysql" ] || [ "${databaseSystem,,}" = "mariadb" ]; then
-    # Use this if the databse from the backup uses UTF8 with multibyte support (e.g. for emoijs in filenames):
-    mysql -h localhost -u "${dbUser}" -p"${dbPassword}" -e "CREATE DATABASE ${nextcloudDatabase} CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci"
-    # TODO: Use this if the database from the backup DOES NOT use UTF8 with multibyte support (e.g. for emoijs in filenames):
-    #mysql -h localhost -u "${dbUser}" -p"${dbPassword}" -e "CREATE DATABASE ${nextcloudDatabase}"
+    if [ ! -z "${dbNoMultibyte+x}" ] && [ "${dbNoMultibyte}" = true ] ; then
+        # Database from the backup DOES NOT use UTF8 with multibyte support (e.g. for emoijs in filenames)
+        mysql -h localhost -u "${dbUser}" -p"${dbPassword}" -e "CREATE DATABASE ${nextcloudDatabase}"
+    else
+        # Database from the backup uses UTF8 with multibyte support (e.g. for emoijs in filenames)
+        mysql -h localhost -u "${dbUser}" -p"${dbPassword}" -e "CREATE DATABASE ${nextcloudDatabase} CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci"
+    fi
 elif [ "${databaseSystem,,}" = "postgresql" ] || [ "${databaseSystem,,}" = "pgsql" ]; then
     sudo -u postgres psql -c "CREATE DATABASE ${nextcloudDatabase} WITH OWNER ${dbUser} TEMPLATE template0 ENCODING \"UNICODE\";"
 fi