package handler import ( "encoding/xml" "net/http" "strconv" "strings" "github.com/nspcc-dev/neofs-s3-gw/api" "github.com/nspcc-dev/neofs-s3-gw/api/errors" "github.com/nspcc-dev/neofs-s3-gw/api/layer" "go.uber.org/zap" "go.uber.org/zap/zapcore" ) // DeleteObjectsRequest - xml carrying the object key names which needs to be deleted. type DeleteObjectsRequest struct { // Element to enable quiet mode for the request Quiet bool // List of objects to be deleted Objects []ObjectIdentifier `xml:"Object"` } // ObjectIdentifier carries key name for the object to delete. type ObjectIdentifier struct { ObjectName string `xml:"Key"` VersionID string `xml:"VersionId,omitempty"` } // DeletedObject carries key name for the object to delete. type DeletedObject struct { ObjectIdentifier DeleteMarker bool `xml:"DeleteMarker,omitempty"` DeleteMarkerVersionID string `xml:"DeleteMarkerVersionId,omitempty"` } // DeleteError structure. type DeleteError struct { Code string Message string Key string VersionID string `xml:"versionId,omitempty"` } // DeleteObjectsResponse container for multiple object deletes. type DeleteObjectsResponse struct { XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ DeleteResult" json:"-"` // Collection of all deleted objects DeletedObjects []DeletedObject `xml:"Deleted,omitempty"` // Collection of errors deleting certain objects. Errors []DeleteError `xml:"Error,omitempty"` } func (h *handler) DeleteObjectHandler(w http.ResponseWriter, r *http.Request) { reqInfo := api.GetReqInfo(r.Context()) versionedObject := []*layer.VersionedObject{{ Name: reqInfo.ObjectName, VersionID: reqInfo.URL.Query().Get(api.QueryVersionID), }} bktInfo, err := h.getBucketAndCheckOwner(r, reqInfo.BucketName) if err != nil { h.logAndSendError(w, "could not get bucket info", reqInfo, err) return } deletedObjects, err := h.obj.DeleteObjects(r.Context(), bktInfo, versionedObject) deletedObject := deletedObjects[0] if err == nil { err = deletedObject.Error } if err != nil { if strings.Contains(err.Error(), "object is locked") { h.logAndSendError(w, "object is locked", reqInfo, errors.GetAPIError(errors.ErrAccessDenied)) return } h.log.Error("could not delete object", zap.String("request_id", reqInfo.RequestID), zap.String("bucket_name", reqInfo.BucketName), zap.String("object_name", reqInfo.ObjectName), zap.Error(err)) } if deletedObject.DeleteMarkVersion != "" { w.Header().Set(api.AmzDeleteMarker, strconv.FormatBool(true)) w.Header().Set(api.AmzVersionID, deletedObject.DeleteMarkVersion) } w.WriteHeader(http.StatusNoContent) } // DeleteMultipleObjectsHandler handles multiple delete requests. func (h *handler) DeleteMultipleObjectsHandler(w http.ResponseWriter, r *http.Request) { reqInfo := api.GetReqInfo(r.Context()) // Content-Md5 is requied should be set // http://docs.aws.amazon.com/AmazonS3/latest/API/multiobjectdeleteapi.html if _, ok := r.Header[api.ContentMD5]; !ok { h.logAndSendError(w, "missing Content-MD5", reqInfo, errors.GetAPIError(errors.ErrMissingContentMD5)) return } // Content-Length is required and should be non-zero // http://docs.aws.amazon.com/AmazonS3/latest/API/multiobjectdeleteapi.html if r.ContentLength <= 0 { h.logAndSendError(w, "missing Content-Length", reqInfo, errors.GetAPIError(errors.ErrMissingContentLength)) return } // Unmarshal list of keys to be deleted. requested := &DeleteObjectsRequest{} if err := xml.NewDecoder(r.Body).Decode(requested); err != nil { h.logAndSendError(w, "couldn't decode body", reqInfo, errors.GetAPIError(errors.ErrMalformedXML)) return } removed := make(map[string]*layer.VersionedObject) toRemove := make([]*layer.VersionedObject, 0, len(requested.Objects)) for _, obj := range requested.Objects { versionedObj := &layer.VersionedObject{ Name: obj.ObjectName, VersionID: obj.VersionID, } toRemove = append(toRemove, versionedObj) removed[versionedObj.String()] = versionedObj } response := &DeleteObjectsResponse{ Errors: make([]DeleteError, 0, len(toRemove)), DeletedObjects: make([]DeletedObject, 0, len(toRemove)), } bktInfo, err := h.getBucketAndCheckOwner(r, reqInfo.BucketName) if err != nil { h.logAndSendError(w, "could not get bucket info", reqInfo, err) return } marshaler := zapcore.ArrayMarshalerFunc(func(encoder zapcore.ArrayEncoder) error { for _, obj := range toRemove { encoder.AppendString(obj.String()) } return nil }) deletedObjects, err := h.obj.DeleteObjects(r.Context(), bktInfo, toRemove) if !requested.Quiet && err != nil { h.logAndSendError(w, "couldn't delete objects", reqInfo, err) return } var errs []error for _, obj := range deletedObjects { if obj.Error == nil { deletedObj := DeletedObject{ ObjectIdentifier: ObjectIdentifier{ ObjectName: obj.Name, VersionID: obj.VersionID, }, DeleteMarkerVersionID: obj.DeleteMarkVersion, } if deletedObj.DeleteMarkerVersionID != "" { deletedObj.DeleteMarker = true } response.DeletedObjects = append(response.DeletedObjects, deletedObj) } else if !requested.Quiet { code := "BadRequest" if s3err, ok := obj.Error.(errors.Error); ok { code = s3err.Code } response.Errors = append(response.Errors, DeleteError{ Code: code, Message: obj.Error.Error(), Key: obj.Name, VersionID: obj.VersionID, }) errs = append(errs, obj.Error) } } if !requested.Quiet && len(errs) != 0 { additional := []zap.Field{ zap.Array("objects", marshaler), zap.Errors("errors", errs), } h.logAndSendError(w, "could not delete objects", reqInfo, nil, additional...) } if err := api.EncodeToResponse(w, response); err != nil { h.logAndSendError(w, "could not write response", reqInfo, err, zap.Array("objects", marshaler)) return } } func (h *handler) DeleteBucketHandler(w http.ResponseWriter, r *http.Request) { reqInfo := api.GetReqInfo(r.Context()) bktInfo, err := h.getBucketAndCheckOwner(r, reqInfo.BucketName) if err != nil { h.logAndSendError(w, "could not get bucket info", reqInfo, err) return } if err = h.obj.DeleteBucket(r.Context(), &layer.DeleteBucketParams{BktInfo: bktInfo}); err != nil { h.logAndSendError(w, "couldn't delete bucket", reqInfo, err) } w.WriteHeader(http.StatusNoContent) }