use std::sync::Arc; use hyper::{Body, Request, Response, StatusCode}; use garage_util::data::*; use garage_util::time::*; use garage_model::garage::Garage; use garage_model::s3::object_table::*; use crate::s3::error::*; use crate::s3::xml as s3_xml; use crate::signature::verify_signed_content; async fn handle_delete_internal( garage: &Garage, bucket_id: Uuid, key: &str, ) -> Result<(Uuid, Uuid), Error> { let object = garage .object_table .get(&bucket_id, &key.to_string()) .await? .ok_or(Error::NoSuchKey)?; // No need to delete let interesting_versions = object.versions().iter().filter(|v| { !matches!( v.state, ObjectVersionState::Aborted | ObjectVersionState::Complete(ObjectVersionData::DeleteMarker) ) }); let mut version_to_delete = None; let mut timestamp = now_msec(); for v in interesting_versions { if v.timestamp + 1 > timestamp || version_to_delete.is_none() { version_to_delete = Some(v.uuid); } timestamp = std::cmp::max(timestamp, v.timestamp + 1); } let deleted_version = version_to_delete.ok_or(Error::NoSuchKey)?; let version_uuid = gen_uuid(); let object = Object::new( bucket_id, key.into(), vec![ObjectVersion { uuid: version_uuid, timestamp, state: ObjectVersionState::Complete(ObjectVersionData::DeleteMarker), }], ); garage.object_table.insert(&object).await?; Ok((deleted_version, version_uuid)) } pub async fn handle_delete( garage: Arc<Garage>, bucket_id: Uuid, key: &str, ) -> Result<Response<Body>, Error> { match handle_delete_internal(&garage, bucket_id, key).await { Ok(_) | Err(Error::NoSuchKey) => Ok(Response::builder() .status(StatusCode::NO_CONTENT) .body(Body::from(vec![])) .unwrap()), Err(e) => Err(e), } } pub async fn handle_delete_objects( garage: Arc<Garage>, bucket_id: Uuid, req: Request<Body>, content_sha256: Option<Hash>, ) -> Result<Response<Body>, Error> { let body = hyper::body::to_bytes(req.into_body()).await?; if let Some(content_sha256) = content_sha256 { verify_signed_content(content_sha256, &body[..])?; } let cmd_xml = roxmltree::Document::parse(std::str::from_utf8(&body)?)?; let cmd = parse_delete_objects_xml(&cmd_xml).ok_or_bad_request("Invalid delete XML query")?; let mut ret_deleted = Vec::new(); let mut ret_errors = Vec::new(); for obj in cmd.objects.iter() { match handle_delete_internal(&garage, bucket_id, &obj.key).await { Ok((deleted_version, delete_marker_version)) => { if cmd.quiet { continue; } ret_deleted.push(s3_xml::Deleted { key: s3_xml::Value(obj.key.clone()), version_id: s3_xml::Value(hex::encode(deleted_version)), delete_marker_version_id: s3_xml::Value(hex::encode(delete_marker_version)), }); } Err(e) => { ret_errors.push(s3_xml::DeleteError { code: s3_xml::Value(e.aws_code().to_string()), key: Some(s3_xml::Value(obj.key.clone())), message: s3_xml::Value(format!("{}", e)), version_id: None, }); } } } let xml = s3_xml::to_xml_with_header(&s3_xml::DeleteResult { xmlns: (), deleted: ret_deleted, errors: ret_errors, })?; Ok(Response::builder() .header("Content-Type", "application/xml") .body(Body::from(xml))?) } struct DeleteRequest { quiet: bool, objects: Vec<DeleteObject>, } struct DeleteObject { key: String, } fn parse_delete_objects_xml(xml: &roxmltree::Document) -> Option<DeleteRequest> { let mut ret = DeleteRequest { quiet: false, objects: vec![], }; let root = xml.root(); let delete = root.first_child()?; if !delete.has_tag_name("Delete") { return None; } for item in delete.children() { if item.has_tag_name("Object") { let key = item.children().find(|e| e.has_tag_name("Key"))?; let key_str = key.text()?; ret.objects.push(DeleteObject { key: key_str.to_string(), }); } else if item.has_tag_name("Quiet") { if item.text()? == "true" { ret.quiet = true; } else { ret.quiet = false; } } else { return None; } } Some(ret) }