package layer import ( "bytes" "context" "crypto/ecdsa" "fmt" "io" "net/url" "strings" "time" "github.com/nspcc-dev/neofs-api-go/pkg/acl/eacl" "github.com/nspcc-dev/neofs-api-go/pkg/client" cid "github.com/nspcc-dev/neofs-api-go/pkg/container/id" "github.com/nspcc-dev/neofs-api-go/pkg/netmap" "github.com/nspcc-dev/neofs-api-go/pkg/object" "github.com/nspcc-dev/neofs-api-go/pkg/owner" "github.com/nspcc-dev/neofs-s3-gw/api" "github.com/nspcc-dev/neofs-s3-gw/api/cache" "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/creds/accessbox" "github.com/nspcc-dev/neofs-sdk-go/pool" "go.uber.org/zap" ) type ( layer struct { pool pool.Pool log *zap.Logger listsCache *cache.ObjectsListCache objCache *cache.ObjectsCache namesCache *cache.ObjectsNameCache bucketCache *cache.BucketCache systemCache *cache.SystemCache } // CachesConfig contains params for caches. CachesConfig struct { Objects *cache.Config ObjectsList *cache.Config Names *cache.Config Buckets *cache.Config System *cache.Config } // Params stores basic API parameters. Params struct { Pool pool.Pool Logger *zap.Logger Timeout time.Duration Key *ecdsa.PrivateKey } // GetObjectParams stores object get request parameters. GetObjectParams struct { Range *RangeParams ObjectInfo *data.ObjectInfo Offset int64 Length int64 Writer io.Writer VersionID string } // HeadObjectParams stores object head request parameters. HeadObjectParams struct { Bucket string Object string VersionID string } // RangeParams stores range header request parameters. RangeParams struct { Start uint64 End uint64 } // PutObjectParams stores object put request parameters. PutObjectParams struct { Bucket string Object string Size int64 Reader io.Reader Header map[string]string } // PutVersioningParams stores object copy request parameters. PutVersioningParams struct { Bucket string Settings *BucketSettings } // PutCORSParams stores PutCORS request parameters. PutCORSParams struct { BktInfo *data.BucketInfo CORSConfiguration []byte } // BucketSettings stores settings such as versioning. BucketSettings struct { VersioningEnabled bool } // CopyObjectParams stores object copy request parameters. CopyObjectParams struct { SrcObject *data.ObjectInfo DstBucket string DstObject string SrcSize int64 Header map[string]string } // CreateBucketParams stores bucket create request parameters. CreateBucketParams struct { Name string ACL uint32 Policy *netmap.PlacementPolicy EACL *eacl.Table BoxData *accessbox.Box } // PutBucketACLParams stores put bucket acl request parameters. PutBucketACLParams struct { Name string EACL *eacl.Table } // DeleteBucketParams stores delete bucket request parameters. DeleteBucketParams struct { Name string } // PutSystemObjectParams stores putSystemObject parameters. PutSystemObjectParams struct { BktInfo *data.BucketInfo ObjName string Metadata map[string]string Prefix string Payload []byte } // ListObjectVersionsParams stores list objects versions parameters. ListObjectVersionsParams struct { Bucket string Delimiter string KeyMarker string MaxKeys int Prefix string VersionIDMarker string Encode string } // VersionedObject stores info about objects to delete. VersionedObject struct { Name string VersionID string DeleteMarkVersion string Error error } // PutTaggingParams stores tag set params. PutTaggingParams struct { ObjectInfo *data.ObjectInfo TagSet map[string]string } // NeoFS provides basic NeoFS interface. NeoFS interface { Get(ctx context.Context, address *object.Address) (*object.Object, error) } // Client provides S3 API client interface. Client interface { NeoFS PutBucketVersioning(ctx context.Context, p *PutVersioningParams) (*data.ObjectInfo, error) GetBucketVersioning(ctx context.Context, name string) (*BucketSettings, error) PutBucketCORS(ctx context.Context, p *PutCORSParams) error GetBucketCORS(ctx context.Context, bktInfo *data.BucketInfo) ([]byte, error) DeleteBucketCORS(ctx context.Context, bktInfo *data.BucketInfo) error ListBuckets(ctx context.Context) ([]*data.BucketInfo, error) GetBucketInfo(ctx context.Context, name string) (*data.BucketInfo, error) GetBucketACL(ctx context.Context, name string) (*BucketACL, error) PutBucketACL(ctx context.Context, p *PutBucketACLParams) error CreateBucket(ctx context.Context, p *CreateBucketParams) (*cid.ID, error) DeleteBucket(ctx context.Context, p *DeleteBucketParams) error GetObject(ctx context.Context, p *GetObjectParams) error GetObjectInfo(ctx context.Context, p *HeadObjectParams) (*data.ObjectInfo, error) GetObjectTagging(ctx context.Context, p *data.ObjectInfo) (map[string]string, error) GetBucketTagging(ctx context.Context, bucket string) (map[string]string, error) PutObject(ctx context.Context, p *PutObjectParams) (*data.ObjectInfo, error) PutObjectTagging(ctx context.Context, p *PutTaggingParams) error PutBucketTagging(ctx context.Context, bucket string, tagSet map[string]string) error CopyObject(ctx context.Context, p *CopyObjectParams) (*data.ObjectInfo, error) ListObjectsV1(ctx context.Context, p *ListObjectsParamsV1) (*ListObjectsInfoV1, error) ListObjectsV2(ctx context.Context, p *ListObjectsParamsV2) (*ListObjectsInfoV2, error) ListObjectVersions(ctx context.Context, p *ListObjectVersionsParams) (*ListObjectVersionsInfo, error) DeleteObjects(ctx context.Context, bucket string, objects []*VersionedObject) ([]*VersionedObject, error) DeleteObjectTagging(ctx context.Context, p *data.ObjectInfo) error DeleteBucketTagging(ctx context.Context, bucket string) error } ) const ( tagPrefix = "S3-Tag-" tagEmptyMark = "\\" ) func (t *VersionedObject) String() string { return t.Name + ":" + t.VersionID } // DefaultCachesConfigs returns filled configs. func DefaultCachesConfigs() *CachesConfig { return &CachesConfig{ Objects: cache.DefaultObjectsConfig(), ObjectsList: cache.DefaultObjectsListConfig(), Names: cache.DefaultObjectsNameConfig(), Buckets: cache.DefaultBucketConfig(), System: cache.DefaultSystemConfig(), } } // NewLayer creates instance of layer. It checks credentials // and establishes gRPC connection with node. func NewLayer(log *zap.Logger, conns pool.Pool, config *CachesConfig) Client { return &layer{ pool: conns, log: log, listsCache: cache.NewObjectsListCache(config.ObjectsList), objCache: cache.New(config.Objects), namesCache: cache.NewObjectsNameCache(config.Names), bucketCache: cache.NewBucketCache(config.Buckets), systemCache: cache.NewSystemCache(config.System), } } // Owner returns owner id from BearerToken (context) or from client owner. func (n *layer) Owner(ctx context.Context) *owner.ID { if data, ok := ctx.Value(api.BoxData).(*accessbox.Box); ok && data != nil && data.Gate != nil { return data.Gate.BearerToken.Issuer() } return n.pool.OwnerID() } // BearerOpt returns client.WithBearer call option with token from context or with nil token. func (n *layer) BearerOpt(ctx context.Context) client.CallOption { if data, ok := ctx.Value(api.BoxData).(*accessbox.Box); ok && data != nil && data.Gate != nil { return client.WithBearer(data.Gate.BearerToken) } return client.WithBearer(nil) } // SessionOpt returns client.WithSession call option with token from context or with nil token. func (n *layer) SessionOpt(ctx context.Context) client.CallOption { if data, ok := ctx.Value(api.BoxData).(*accessbox.Box); ok && data != nil && data.Gate != nil { return client.WithSession(data.Gate.SessionToken) } return client.WithSession(nil) } // Get NeoFS Object by refs.Address (should be used by auth.Center). func (n *layer) Get(ctx context.Context, address *object.Address) (*object.Object, error) { ops := new(client.GetObjectParams).WithAddress(address) return n.pool.GetObject(ctx, ops, n.BearerOpt(ctx)) } // GetBucketInfo returns bucket info by name. func (n *layer) GetBucketInfo(ctx context.Context, name string) (*data.BucketInfo, error) { name, err := url.QueryUnescape(name) if err != nil { return nil, err } if bktInfo := n.bucketCache.Get(name); bktInfo != nil { return bktInfo, nil } containerID := new(cid.ID) if err := containerID.Parse(name); err != nil { list, err := n.containerList(ctx) if err != nil { return nil, err } for _, bkt := range list { if bkt.Name == name { return bkt, nil } } return nil, errors.GetAPIError(errors.ErrNoSuchBucket) } return n.containerInfo(ctx, containerID) } // GetBucketACL returns bucket acl info by name. func (n *layer) GetBucketACL(ctx context.Context, name string) (*BucketACL, error) { inf, err := n.GetBucketInfo(ctx, name) if err != nil { return nil, err } eacl, err := n.GetContainerEACL(ctx, inf.CID) if err != nil { return nil, err } return &BucketACL{ Info: inf, EACL: eacl, }, nil } // PutBucketACL put bucket acl by name. func (n *layer) PutBucketACL(ctx context.Context, param *PutBucketACLParams) error { inf, err := n.GetBucketInfo(ctx, param.Name) if err != nil { return err } return n.setContainerEACLTable(ctx, inf.CID, param.EACL) } // ListBuckets returns all user containers. Name of the bucket is a container // id. Timestamp is omitted since it is not saved in neofs container. func (n *layer) ListBuckets(ctx context.Context) ([]*data.BucketInfo, error) { return n.containerList(ctx) } // GetObject from storage. func (n *layer) GetObject(ctx context.Context, p *GetObjectParams) error { var err error params := &getParams{ Writer: p.Writer, cid: p.ObjectInfo.CID, oid: p.ObjectInfo.ID, offset: p.Offset, length: p.Length, } if p.Range != nil { objRange := object.NewRange() objRange.SetOffset(p.Range.Start) // Range header is inclusive objRange.SetLength(p.Range.End - p.Range.Start + 1) params.Range = objRange _, err = n.objectRange(ctx, params) } else { _, err = n.objectGetWithPayloadWriter(ctx, params) } if err != nil { n.objCache.Delete(p.ObjectInfo.Address()) return fmt.Errorf("couldn't get object, cid: %s : %w", p.ObjectInfo.CID, err) } return nil } // GetObjectInfo returns meta information about the object. func (n *layer) GetObjectInfo(ctx context.Context, p *HeadObjectParams) (*data.ObjectInfo, error) { bkt, err := n.GetBucketInfo(ctx, p.Bucket) if err != nil { n.log.Error("could not fetch bucket info", zap.Error(err)) return nil, err } if len(p.VersionID) == 0 { return n.headLastVersionIfNotDeleted(ctx, bkt, p.Object) } return n.headVersion(ctx, bkt, p.VersionID) } // PutObject into storage. func (n *layer) PutObject(ctx context.Context, p *PutObjectParams) (*data.ObjectInfo, error) { bkt, err := n.GetBucketInfo(ctx, p.Bucket) if err != nil { return nil, err } return n.objectPut(ctx, bkt, p) } // GetObjectTagging from storage. func (n *layer) GetObjectTagging(ctx context.Context, oi *data.ObjectInfo) (map[string]string, error) { bktInfo := &data.BucketInfo{ Name: oi.Bucket, CID: oi.CID, Owner: oi.Owner, } objInfo, err := n.headSystemObject(ctx, bktInfo, oi.TagsObject()) if err != nil && !errors.IsS3Error(err, errors.ErrNoSuchKey) { return nil, err } return formTagSet(objInfo), nil } // GetBucketTagging from storage. func (n *layer) GetBucketTagging(ctx context.Context, bucketName string) (map[string]string, error) { bktInfo, err := n.GetBucketInfo(ctx, bucketName) if err != nil { return nil, err } objInfo, err := n.headSystemObject(ctx, bktInfo, formBucketTagObjectName(bucketName)) if err != nil && !errors.IsS3Error(err, errors.ErrNoSuchKey) { return nil, err } return formTagSet(objInfo), nil } func formTagSet(objInfo *data.ObjectInfo) map[string]string { var tagSet map[string]string if objInfo != nil { tagSet = make(map[string]string, len(objInfo.Headers)) for k, v := range objInfo.Headers { if strings.HasPrefix(k, tagPrefix) { if v == tagEmptyMark { v = "" } tagSet[strings.TrimPrefix(k, tagPrefix)] = v } } } return tagSet } // PutObjectTagging into storage. func (n *layer) PutObjectTagging(ctx context.Context, p *PutTaggingParams) error { bktInfo := &data.BucketInfo{ Name: p.ObjectInfo.Bucket, CID: p.ObjectInfo.CID, Owner: p.ObjectInfo.Owner, } s := &PutSystemObjectParams{ BktInfo: bktInfo, ObjName: p.ObjectInfo.TagsObject(), Metadata: p.TagSet, Prefix: tagPrefix, Payload: nil, } if _, err := n.putSystemObject(ctx, s); err != nil { return err } return nil } // PutBucketTagging into storage. func (n *layer) PutBucketTagging(ctx context.Context, bucketName string, tagSet map[string]string) error { bktInfo, err := n.GetBucketInfo(ctx, bucketName) if err != nil { return err } s := &PutSystemObjectParams{ BktInfo: bktInfo, ObjName: formBucketTagObjectName(bucketName), Metadata: tagSet, Prefix: tagPrefix, Payload: nil, } if _, err = n.putSystemObject(ctx, s); err != nil { return err } return nil } // DeleteObjectTagging from storage. func (n *layer) DeleteObjectTagging(ctx context.Context, p *data.ObjectInfo) error { bktInfo, err := n.GetBucketInfo(ctx, p.Bucket) if err != nil { return err } return n.deleteSystemObject(ctx, bktInfo, p.TagsObject()) } // DeleteBucketTagging from storage. func (n *layer) DeleteBucketTagging(ctx context.Context, bucketName string) error { bktInfo, err := n.GetBucketInfo(ctx, bucketName) if err != nil { return err } return n.deleteSystemObject(ctx, bktInfo, formBucketTagObjectName(bucketName)) } // CopyObject from one bucket into another bucket. func (n *layer) CopyObject(ctx context.Context, p *CopyObjectParams) (*data.ObjectInfo, error) { pr, pw := io.Pipe() go func() { err := n.GetObject(ctx, &GetObjectParams{ ObjectInfo: p.SrcObject, Writer: pw, }) if err = pw.CloseWithError(err); err != nil { n.log.Error("could not get object", zap.Error(err)) } }() return n.PutObject(ctx, &PutObjectParams{ Bucket: p.DstBucket, Object: p.DstObject, Size: p.SrcSize, Reader: pr, Header: p.Header, }) } // DeleteObject removes all objects with passed nice name. func (n *layer) deleteObject(ctx context.Context, bkt *data.BucketInfo, obj *VersionedObject) *VersionedObject { var ( err error ids []*object.ID ) versioningEnabled := n.isVersioningEnabled(ctx, bkt) if !versioningEnabled && obj.VersionID != unversionedObjectVersionID && obj.VersionID != "" { obj.Error = errors.GetAPIError(errors.ErrInvalidVersion) return obj } if versioningEnabled { p := &PutObjectParams{ Object: obj.Name, Reader: bytes.NewReader(nil), Header: map[string]string{versionsDeleteMarkAttr: obj.VersionID}, } if len(obj.VersionID) != 0 { version, err := n.checkVersionsExist(ctx, bkt, obj) if err != nil { obj.Error = err return obj } ids = []*object.ID{version.ID} if version.Headers[versionsDeleteMarkAttr] == delMarkFullObject { obj.DeleteMarkVersion = version.Version() } p.Header[versionsDelAttr] = obj.VersionID } else { p.Header[versionsDeleteMarkAttr] = delMarkFullObject } objInfo, err := n.objectPut(ctx, bkt, p) if err != nil { obj.Error = err return obj } if len(obj.VersionID) == 0 { obj.DeleteMarkVersion = objInfo.Version() } } else { ids, err = n.objectSearch(ctx, &findParams{cid: bkt.CID, val: obj.Name}) if err != nil { obj.Error = err return obj } } for _, id := range ids { if err = n.objectDelete(ctx, bkt.CID, id); err != nil { obj.Error = err return obj } if err = n.DeleteObjectTagging(ctx, &data.ObjectInfo{ID: id, Bucket: bkt.Name, Name: obj.Name}); err != nil { obj.Error = err return obj } } n.listsCache.CleanCacheEntriesContainingObject(obj.Name, bkt.CID) return obj } // DeleteObjects from the storage. func (n *layer) DeleteObjects(ctx context.Context, bucket string, objects []*VersionedObject) ([]*VersionedObject, error) { bkt, err := n.GetBucketInfo(ctx, bucket) if err != nil { return nil, err } for i, obj := range objects { objects[i] = n.deleteObject(ctx, bkt, obj) } return objects, nil } func (n *layer) CreateBucket(ctx context.Context, p *CreateBucketParams) (*cid.ID, error) { _, err := n.GetBucketInfo(ctx, p.Name) if err != nil { if errors.IsS3Error(err, errors.ErrNoSuchBucket) { return n.createContainer(ctx, p) } return nil, err } return nil, errors.GetAPIError(errors.ErrBucketAlreadyExists) } func (n *layer) DeleteBucket(ctx context.Context, p *DeleteBucketParams) error { bucketInfo, err := n.GetBucketInfo(ctx, p.Name) if err != nil { return err } objects, err := n.listSortedObjects(ctx, allObjectParams{Bucket: bucketInfo}) if err != nil { return err } if len(objects) != 0 { return errors.GetAPIError(errors.ErrBucketNotEmpty) } if err = n.deleteContainer(ctx, bucketInfo.CID); err != nil { return err } n.bucketCache.Delete(bucketInfo.Name) return nil }