1 files changed, 71 insertions, 0 deletions
diff --git a/backends/bup.sh b/backends/bup.sh
new file mode 100644
index 0000000..6aa92b6
--- /dev/null
+++ b/backends/bup.sh
@@ -0,0 +1,71 @@
+# use first not-remote backup directory as bup's local repository
+# defaults to ".bup"
+function bup_local() {
+    for backup_dir in ${BACKUP_DIRS[*]}
+    do
+        if [[ $backup_dir != *:* ]]; then
+            echo "$backup_dir"
+            return
+        fi
+    done
+	echo ".bup"
+}
+
+function bup_init() {
+    bup -d "$(bup_local)" index "$WORLD_NAME"
+    local status=$?
+    if [ $status -ne 0 ]; then
+        log_debug "bup: no local repo found, creating..."
+        bup -d "$(bup_local)" init -r "$(bup_local)"
+        log_debug "bup: created local repo at $(bup_local)"
+    fi
+}
+
+function bup_create_backup() {
+    log_debug "bup: backup started"
+
+    bup -d "$(bup_local)" index "$WORLD_NAME"
+
+    # 0 if saved to at least one non-local repository
+	# TODO make more strict?
+    local retcode=1
+    for backup_dir in ${BACKUP_DIRS[*]}
+    do
+        log_info "bup: backing up to \"$backup_dir\""
+        # try to save to remote
+        bup -d "$(bup_local)" save -r "$backup_dir" -n "$BACKUP_NAME" "$WORLD_NAME"
+		local status=$?
+        # if failed - reinit remote and try again
+        if [ $status -ne 0 ]; then
+            log_debug "bup: failed backing up to \"$backup_dir\", reinitializing remote..."
+            bup -d "$(bup_local)" init -r "$backup_dir"
+			status=$?
+            if [ $status -eq 0 ]; then
+                log_debug "bup: created remote at \"$backup_dir\""
+                bup -d "$(bup_local)" save -r "$backup_dir" -n "$BACKUP_NAME" "$WORLD_NAME"
+            else
+                log_error "bup: failed to make remote at \"$backup_dir\", moving on"
+            fi
+        else
+            if [ ! "$backup_dir" = "$(bup_local)" ]; then
+                retcode=0
+            fi
+        fi
+    done
+
+    log_debug "bup: backup finished"
+    return $retcode
+}
+
+# server_restore relies on output format of this function
+function bup_ls() {
+	local backup_dir="$1"
+    bup -d "$(bup_local)" ls -r "$backup_dir" "$BACKUP_NAME" | sort -r
+}
+
+function bup_restore() {
+    local remote="$1"
+    local snapshot="$2"
+	local dest="$3"
+    bup -d "$(bup_local)" restore -r "$remote" --outdir "$dest" "$BACKUP_NAME/$snapshot/$PWD/."
+}