Reformat options handling keys and defaults

1 files changed, 10 insertions, 4 deletions

diff --git a/backup-dataset.sh b/backup-dataset.sh
index e4303c5..b1553e5 100755
--- a/backup-dataset.sh
+++ b/backup-dataset.sh
@@ -3,7 +3,7 @@
 SNAPSHOT_DIRECTORY="/var/backups/dataset-snapshots"
 
 usage() (
-        echo "backup-dataset.sh <dataset> <duplicity destination> [duplicity options]"
+        echo "backup-dataset.sh <dataset> <duplicity destination> <signing key> <encryption key> [duplicity options]"
         echo
         echo "Performs a duplicity incremental backup of the specified dataset."
         echo "An atomic snapshot of the dataset is taken prior to backing up."
@@ -13,15 +13,21 @@ usage() (
 backup_dataset() (
         DATASET="$1"
         DESTINATION="$2"
-        DUPLICITY_OPTIONS="$3"
+        SIGNING_KEY="$3"
+        ENCRYPTION_KEY="$4"
+        DUPLICITY_OPTIONS="$5"
 
         sudo snap.sh snap "$DATASET"
-        PASSPHRASE="null" duplicity $DUPLICITY_OPTIONS "$SNAPSHOT_DIRECTORY/$DATASET" "$DESTINATION"
+
+        PASSPHRASE="null" duplicity $DUPLICITY_OPTIONS \
+                --sign-key="$SIGNING_KEY" --encrypt-key="$ENCRYPTION_KEY" \
+                "$SNAPSHOT_DIRECTORY/$DATASET" "$DESTINATION"
+
         sudo snap.sh free "$DATASET"
 )
 
 case "${1:-help}" in
         "help") usage;;
-        *)      backup_dataset "$1" "$2" "${3:-}";;
+        *)      backup_dataset "$1" "$2" "$3" "$4" "${5:-incremental}";;
 esac