package handler import ( "net/http" "net/url" "strconv" "time" "github.com/nspcc-dev/neofs-s3-gw/api" "github.com/nspcc-dev/neofs-s3-gw/api/data" "github.com/nspcc-dev/neofs-s3-gw/api/errors" "github.com/nspcc-dev/neofs-s3-gw/api/layer" oid "github.com/nspcc-dev/neofs-sdk-go/object/id" ) // ListObjectsV1Handler handles objects listing requests for API version 1. func (h *handler) ListObjectsV1Handler(w http.ResponseWriter, r *http.Request) { reqInfo := api.GetReqInfo(r.Context()) params, err := parseListObjectsArgsV1(reqInfo) if err != nil { h.logAndSendError(w, "failed to parse arguments", reqInfo, err) return } if params.BktInfo, err = h.getBucketAndCheckOwner(r, reqInfo.BucketName); err != nil { h.logAndSendError(w, "could not get bucket info", reqInfo, err) return } list, err := h.obj.ListObjectsV1(r.Context(), params) if err != nil { h.logAndSendError(w, "something went wrong", reqInfo, err) return } if err = api.EncodeToResponse(w, encodeV1(params, list)); err != nil { h.logAndSendError(w, "something went wrong", reqInfo, err) } } func encodeV1(p *layer.ListObjectsParamsV1, list *layer.ListObjectsInfoV1) *ListObjectsV1Response { res := &ListObjectsV1Response{ Name: p.BktInfo.Name, EncodingType: p.Encode, Marker: p.Marker, Prefix: p.Prefix, MaxKeys: p.MaxKeys, Delimiter: p.Delimiter, IsTruncated: list.IsTruncated, NextMarker: list.NextMarker, } res.CommonPrefixes = fillPrefixes(list.Prefixes, p.Encode) res.Contents = fillContentsWithOwner(list.Objects, p.Encode) return res } // ListObjectsV2Handler handles objects listing requests for API version 2. func (h *handler) ListObjectsV2Handler(w http.ResponseWriter, r *http.Request) { reqInfo := api.GetReqInfo(r.Context()) params, err := parseListObjectsArgsV2(reqInfo) if err != nil { h.logAndSendError(w, "failed to parse arguments", reqInfo, err) return } if params.BktInfo, err = h.getBucketAndCheckOwner(r, reqInfo.BucketName); err != nil { h.logAndSendError(w, "could not get bucket info", reqInfo, err) return } list, err := h.obj.ListObjectsV2(r.Context(), params) if err != nil { h.logAndSendError(w, "something went wrong", reqInfo, err) return } if err = api.EncodeToResponse(w, encodeV2(params, list)); err != nil { h.logAndSendError(w, "something went wrong", reqInfo, err) } } func encodeV2(p *layer.ListObjectsParamsV2, list *layer.ListObjectsInfoV2) *ListObjectsV2Response { res := &ListObjectsV2Response{ Name: p.BktInfo.Name, EncodingType: p.Encode, Prefix: s3PathEncode(p.Prefix, p.Encode), KeyCount: len(list.Objects) + len(list.Prefixes), MaxKeys: p.MaxKeys, Delimiter: s3PathEncode(p.Delimiter, p.Encode), StartAfter: s3PathEncode(p.StartAfter, p.Encode), IsTruncated: list.IsTruncated, ContinuationToken: p.ContinuationToken, NextContinuationToken: list.NextContinuationToken, } res.CommonPrefixes = fillPrefixes(list.Prefixes, p.Encode) res.Contents = fillContents(list.Objects, p.Encode, p.FetchOwner) return res } func parseListObjectsArgsV1(reqInfo *api.ReqInfo) (*layer.ListObjectsParamsV1, error) { var ( res layer.ListObjectsParamsV1 queryValues = reqInfo.URL.Query() ) common, err := parseListObjectArgs(reqInfo) if err != nil { return nil, err } res.ListObjectsParamsCommon = *common res.Marker = queryValues.Get("marker") return &res, nil } func parseListObjectsArgsV2(reqInfo *api.ReqInfo) (*layer.ListObjectsParamsV2, error) { var ( res layer.ListObjectsParamsV2 queryValues = reqInfo.URL.Query() ) common, err := parseListObjectArgs(reqInfo) if err != nil { return nil, err } res.ListObjectsParamsCommon = *common res.ContinuationToken, err = parseContinuationToken(queryValues) if err != nil { return nil, err } res.StartAfter = queryValues.Get("start-after") res.FetchOwner, _ = strconv.ParseBool(queryValues.Get("fetch-owner")) return &res, nil } func parseListObjectArgs(reqInfo *api.ReqInfo) (*layer.ListObjectsParamsCommon, error) { var ( err error res layer.ListObjectsParamsCommon queryValues = reqInfo.URL.Query() ) res.Delimiter = queryValues.Get("delimiter") res.Encode = queryValues.Get("encoding-type") if queryValues.Get("max-keys") == "" { res.MaxKeys = maxObjectList } else if res.MaxKeys, err = strconv.Atoi(queryValues.Get("max-keys")); err != nil || res.MaxKeys < 0 { return nil, errors.GetAPIError(errors.ErrInvalidMaxKeys) } res.Prefix = queryValues.Get("prefix") return &res, nil } func parseContinuationToken(queryValues url.Values) (string, error) { if val, ok := queryValues["continuation-token"]; ok { var objID oid.ID if err := objID.DecodeString(val[0]); err != nil { return "", errors.GetAPIError(errors.ErrIncorrectContinuationToken) } return val[0], nil } return "", nil } func fillPrefixes(src []string, encode string) []CommonPrefix { var dst []CommonPrefix for _, obj := range src { dst = append(dst, CommonPrefix{ Prefix: s3PathEncode(obj, encode), }) } return dst } func fillContentsWithOwner(src []*data.ObjectInfo, encode string) []Object { return fillContents(src, encode, true) } func fillContents(src []*data.ObjectInfo, encode string, fetchOwner bool) []Object { var dst []Object for _, obj := range src { res := Object{ Key: s3PathEncode(obj.Name, encode), Size: obj.Size, LastModified: obj.Created.UTC().Format(time.RFC3339), ETag: obj.HashSum, } if fetchOwner { res.Owner = &Owner{ ID: obj.Owner.String(), DisplayName: obj.Owner.String(), } } dst = append(dst, res) } return dst } func (h *handler) ListBucketObjectVersionsHandler(w http.ResponseWriter, r *http.Request) { reqInfo := api.GetReqInfo(r.Context()) p, err := parseListObjectVersionsRequest(reqInfo) if err != nil { h.logAndSendError(w, "failed to parse request", reqInfo, err) return } if p.BktInfo, err = h.getBucketAndCheckOwner(r, reqInfo.BucketName); err != nil { h.logAndSendError(w, "could not get bucket info", reqInfo, err) return } info, err := h.obj.ListObjectVersions(r.Context(), p) if err != nil { h.logAndSendError(w, "something went wrong", reqInfo, err) return } response := encodeListObjectVersionsToResponse(info, p.BktInfo.Name) if err = api.EncodeToResponse(w, response); err != nil { h.logAndSendError(w, "something went wrong", reqInfo, err) } } func parseListObjectVersionsRequest(reqInfo *api.ReqInfo) (*layer.ListObjectVersionsParams, error) { var ( err error res layer.ListObjectVersionsParams queryValues = reqInfo.URL.Query() ) if queryValues.Get("max-keys") == "" { res.MaxKeys = maxObjectList } else if res.MaxKeys, err = strconv.Atoi(queryValues.Get("max-keys")); err != nil || res.MaxKeys <= 0 { return nil, errors.GetAPIError(errors.ErrInvalidMaxKeys) } res.Prefix = queryValues.Get("prefix") res.KeyMarker = queryValues.Get("marker") res.Delimiter = queryValues.Get("delimiter") res.Encode = queryValues.Get("encoding-type") res.VersionIDMarker = queryValues.Get("version-id-marker") return &res, nil } func encodeListObjectVersionsToResponse(info *layer.ListObjectVersionsInfo, bucketName string) *ListObjectsVersionsResponse { res := ListObjectsVersionsResponse{ Name: bucketName, IsTruncated: info.IsTruncated, KeyMarker: info.KeyMarker, NextKeyMarker: info.NextKeyMarker, NextVersionIDMarker: info.NextVersionIDMarker, VersionIDMarker: info.VersionIDMarker, } for _, prefix := range info.CommonPrefixes { res.CommonPrefixes = append(res.CommonPrefixes, CommonPrefix{Prefix: prefix}) } for _, ver := range info.Version { res.Version = append(res.Version, ObjectVersionResponse{ IsLatest: ver.IsLatest, Key: ver.Object.Name, LastModified: ver.Object.Created.UTC().Format(time.RFC3339), Owner: Owner{ ID: ver.Object.Owner.String(), DisplayName: ver.Object.Owner.String(), }, Size: ver.Object.Size, VersionID: ver.Object.Version(), // todo return "null" version for unversioned https://github.com/nspcc-dev/neofs-s3-gw/issues/474 ETag: ver.Object.HashSum, }) } // this loop is not starting till versioning is not implemented for _, del := range info.DeleteMarker { res.DeleteMarker = append(res.DeleteMarker, DeleteMarkerEntry{ IsLatest: del.IsLatest, Key: del.Object.Name, LastModified: del.Object.Created.UTC().Format(time.RFC3339), Owner: Owner{ ID: del.Object.Owner.String(), DisplayName: del.Object.Owner.String(), }, VersionID: del.Object.Version(), }) } return &res }