add STDIN support to backup script

scripts/backup_data.sh

@@ -32,10 +32,11 @@ done
 [ -z "$ACTION" ] && usage && exit 1
 if [ $ACTION != "size" ]; then
   [ -z "$ARCHIVE" ] && usage && exit 1
-  [ "$ARCHIVE" == '-' ] && QUIET=1
+  [ "$ARCHIVE" == '-' ] && [ $ACTION == "backup" ] && QUIET=1
 fi
 
 MEG=1048576
+UNPACK="/home/$BIRDNET_USER/BirdSongs/tmp"
 
 log() {
   [ -z "$QUIET" ] && echo "$1"
@@ -92,6 +93,7 @@ estimated_restore_size() {
 }
 
 restore_check() {
+  if [ "$ARCHIVE" != '-' ]; then
     [ ! -f "$ARCHIVE" ] && echo "$ARCHIVE" not found && exit 1
     available_space_for_restore
     estimated_restore_size
@@ -103,18 +105,41 @@ restore_check() {
     arch_list=$(tar --list --exclude="*/*" -f "$ARCHIVE" | sed 's/\///')
     for obj in  "${required[@]}";do
       part2=$(basename "$obj")
-    ! (echo $arch_list | grep -F -q "$part2") && echo corrupted backup file && exit 1
+      ! (echo $arch_list | grep -F -q "$part2") && echo Missing \'"$part2"\': corrupted backup file? && exit 1
     done
+  fi
+}
+
+late_restore_check() {
+  if [ "$ARCHIVE" == '-' ]; then
+    log "Checking backup file"
+    for obj in  "${required[@]}";do
+      part2=$(basename "$obj")
+      ! [ -e "${UNPACK}/${part2}" ] && echo Missing \'"$part2"\': corrupted backup file? && exit 1
+    done
+  fi
+}
+
+unpack() {
+  log "Starting unpacking, this might take a while"
+  rm -fr ${UNPACK}
+  mkdir ${UNPACK}
+  tar --extract -p -f "$ARCHIVE" -C "${UNPACK}"
 }
 
 restore() {
-  log "Starting restore, this might take a while"
+  log "Starting restore"
   for obj in  "${required[@]}";do
-    tar --extract -p -f "$ARCHIVE" -C "$(dirname "$obj")" "$(basename "$obj")"
+    [ -d "$obj" ] && rm -rf "$obj"
+    mv "${UNPACK}/$(basename "$obj")" "$(dirname "$obj")/"
   done
   log "Trying to restore optional files"
   for obj in  "${optional[@]}";do
-    tar --extract --ignore-failed-read -p -f "$ARCHIVE" -C "$(dirname "$obj")" "$(basename "$obj")" || log "$(basename "$obj") not found in backup file, moving on"
+    if [ -f "${UNPACK}/$(basename "$obj")" ] ; then
+      mv "${UNPACK}/$(basename "$obj")" "$(dirname "$obj")/"
+    else
+      echo No $(basename "$obj") found, moving on
+    fi
   done
   log "Fixing up configuration file"
   CURRENT_BIRDNET_USER="$BIRDNET_USER"
@@ -126,11 +151,13 @@ restore() {
   else
     /home/$CURRENT_BIRDNET_USER/BirdNET-Pi/scripts/install_language_label.sh -l $DATABASE_LANG
   fi
+  rm -fr ${UNPACK}
   log "Restore done"
 }
 
 function cleanup()
 {
+  rm -fr ${UNPACK}
   "$my_dir/restart_services.sh" &>/dev/null
   exit
 }
@@ -157,6 +184,9 @@ if [ $ACTION == "size" ]; then
 fi
 
 trap cleanup SIGINT SIGTERM SIGABRT
+
+[ $ACTION == "restore" ] && unpack
+[ $ACTION == "restore" ] && late_restore_check
 log "Stopping services"
 "$my_dir/stop_core_services.sh"