fix: Changes GetObjectAttributes action xml encoding root element to GetObjectAttributesResponse. Adds input validation for x-amz-object-attributes header. Adds x-amz-delete-marker and x-maz-version-id headers for GetObjectAttributes action. Adds VersionId in HeadObject response, if it's not specified in the request

backend/azure/azure.go

@@ -512,20 +512,22 @@ func (az *Azure) HeadObject(ctx context.Context, input *s3.HeadObjectInput) (*s3
 	return result, nil
 }
 
-func (az *Azure) GetObjectAttributes(ctx context.Context, input *s3.GetObjectAttributesInput) (s3response.GetObjectAttributesResult, error) {
+func (az *Azure) GetObjectAttributes(ctx context.Context, input *s3.GetObjectAttributesInput) (s3response.GetObjectAttributesResponse, error) {
 	data, err := az.HeadObject(ctx, &s3.HeadObjectInput{
 		Bucket: input.Bucket,
 		Key:    input.Key,
 	})
 	if err != nil {
-		return s3response.GetObjectAttributesResult{}, err
+		return s3response.GetObjectAttributesResponse{}, err
 	}
 
-	return s3response.GetObjectAttributesResult{
+	return s3response.GetObjectAttributesResponse{
 		ETag:         data.ETag,
-		LastModified: data.LastModified,
 		ObjectSize:   data.ContentLength,
 		StorageClass: data.StorageClass,
+		LastModified: data.LastModified,
+		VersionId:    data.VersionId,
+		DeleteMarker: data.DeleteMarker,
 	}, nil
 }
 

backend/backend.go

@@ -61,7 +61,7 @@ type Backend interface {
 	HeadObject(context.Context, *s3.HeadObjectInput) (*s3.HeadObjectOutput, error)
 	GetObject(context.Context, *s3.GetObjectInput) (*s3.GetObjectOutput, error)
 	GetObjectAcl(context.Context, *s3.GetObjectAclInput) (*s3.GetObjectAclOutput, error)
-	GetObjectAttributes(context.Context, *s3.GetObjectAttributesInput) (s3response.GetObjectAttributesResult, error)
+	GetObjectAttributes(context.Context, *s3.GetObjectAttributesInput) (s3response.GetObjectAttributesResponse, error)
 	CopyObject(context.Context, *s3.CopyObjectInput) (*s3.CopyObjectOutput, error)
 	ListObjects(context.Context, *s3.ListObjectsInput) (s3response.ListObjectsResult, error)
 	ListObjectsV2(context.Context, *s3.ListObjectsV2Input) (s3response.ListObjectsV2Result, error)
@@ -185,8 +185,8 @@ func (BackendUnsupported) GetObject(context.Context, *s3.GetObjectInput) (*s3.Ge
 func (BackendUnsupported) GetObjectAcl(context.Context, *s3.GetObjectAclInput) (*s3.GetObjectAclOutput, error) {
 	return nil, s3err.GetAPIError(s3err.ErrNotImplemented)
 }
-func (BackendUnsupported) GetObjectAttributes(context.Context, *s3.GetObjectAttributesInput) (s3response.GetObjectAttributesResult, error) {
+func (BackendUnsupported) GetObjectAttributes(context.Context, *s3.GetObjectAttributesInput) (s3response.GetObjectAttributesResponse, error) {
-	return s3response.GetObjectAttributesResult{}, s3err.GetAPIError(s3err.ErrNotImplemented)
+	return s3response.GetObjectAttributesResponse{}, s3err.GetAPIError(s3err.ErrNotImplemented)
 }
 func (BackendUnsupported) CopyObject(context.Context, *s3.CopyObjectInput) (*s3.CopyObjectOutput, error) {
 	return nil, s3err.GetAPIError(s3err.ErrNotImplemented)

backend/posix/posix.go

@@ -2961,8 +2961,9 @@ func (p *Posix) HeadObject(ctx context.Context, input *s3.HeadObjectInput) (*s3.
 	if input.Key == nil {
 		return nil, s3err.GetAPIError(s3err.ErrNoSuchKey)
 	}
+	versionId := backend.GetStringFromPtr(input.VersionId)
 
-	if !p.versioningEnabled() && *input.VersionId != "" {
+	if !p.versioningEnabled() && versionId != "" {
 		//TODO: Maybe we need to return our custom error here?
 		return nil, s3err.GetAPIError(s3err.ErrInvalidVersionId)
 	}
@@ -3022,7 +3023,7 @@ func (p *Posix) HeadObject(ctx context.Context, input *s3.HeadObjectInput) (*s3.
 		return nil, fmt.Errorf("stat bucket: %w", err)
 	}
 
-	if *input.VersionId != "" {
+	if versionId != "" {
 		vId, err := p.meta.RetrieveAttribute(nil, bucket, object, versionIdKey)
 		if errors.Is(err, fs.ErrNotExist) {
 			return nil, s3err.GetAPIError(s3err.ErrNoSuchKey)
@@ -3032,12 +3033,12 @@ func (p *Posix) HeadObject(ctx context.Context, input *s3.HeadObjectInput) (*s3.
 		}
 		if errors.Is(err, meta.ErrNoSuchKey) {
 			bucket = filepath.Join(p.versioningDir, bucket)
-			object = filepath.Join(genObjVersionKey(object), *input.VersionId)
+			object = filepath.Join(genObjVersionKey(object), versionId)
 		}
 
-		if string(vId) != *input.VersionId {
+		if string(vId) != versionId {
 			bucket = filepath.Join(p.versioningDir, bucket)
-			object = filepath.Join(genObjVersionKey(object), *input.VersionId)
+			object = filepath.Join(genObjVersionKey(object), versionId)
 		}
 	}
 
@@ -3045,7 +3046,7 @@ func (p *Posix) HeadObject(ctx context.Context, input *s3.HeadObjectInput) (*s3.
 
 	fi, err := os.Stat(objPath)
 	if errors.Is(err, fs.ErrNotExist) {
-		if *input.VersionId != "" {
+		if versionId != "" {
 			return nil, s3err.GetAPIError(s3err.ErrInvalidVersionId)
 		}
 		return nil, s3err.GetAPIError(s3err.ErrNoSuchKey)
@@ -3063,7 +3064,7 @@ func (p *Posix) HeadObject(ctx context.Context, input *s3.HeadObjectInput) (*s3.
 		return nil, s3err.GetAPIError(s3err.ErrNoSuchKey)
 	}
 
-	if *input.VersionId != "" {
+	if p.versioningEnabled() {
 		isDelMarker, err := p.isObjDeleteMarker(bucket, object)
 		if err != nil {
 			return nil, err
@@ -3078,6 +3079,15 @@ func (p *Posix) HeadObject(ctx context.Context, input *s3.HeadObjectInput) (*s3.
 		}
 	}
 
+	if p.versioningEnabled() && versionId == "" {
+		vId, err := p.meta.RetrieveAttribute(nil, bucket, object, versionIdKey)
+		if err != nil && !errors.Is(err, meta.ErrNoSuchKey) {
+			return nil, fmt.Errorf("get object versionId: %v", err)
+		}
+
+		versionId = string(vId)
+	}
+
 	userMetaData := make(map[string]string)
 	contentType, contentEncoding := p.loadUserMetaData(bucket, object, userMetaData)
 
@@ -3094,7 +3104,7 @@ func (p *Posix) HeadObject(ctx context.Context, input *s3.HeadObjectInput) (*s3.
 	size := fi.Size()
 
 	var objectLockLegalHoldStatus types.ObjectLockLegalHoldStatus
-	status, err := p.GetObjectLegalHold(ctx, bucket, object, *input.VersionId)
+	status, err := p.GetObjectLegalHold(ctx, bucket, object, versionId)
 	if err == nil {
 		if *status {
 			objectLockLegalHoldStatus = types.ObjectLockLegalHoldStatusOn
@@ -3105,7 +3115,7 @@ func (p *Posix) HeadObject(ctx context.Context, input *s3.HeadObjectInput) (*s3.
 
 	var objectLockMode types.ObjectLockMode
 	var objectLockRetainUntilDate *time.Time
-	retention, err := p.GetObjectRetention(ctx, bucket, object, *input.VersionId)
+	retention, err := p.GetObjectRetention(ctx, bucket, object, versionId)
 	if err == nil {
 		var config types.ObjectLockRetention
 		if err := json.Unmarshal(retention, &config); err == nil {
@@ -3114,8 +3124,6 @@ func (p *Posix) HeadObject(ctx context.Context, input *s3.HeadObjectInput) (*s3.
 		}
 	}
 
-	//TODO: the method must handle multipart upload case
-
 	return &s3.HeadObjectOutput{
 		ContentLength:             &size,
 		ContentType:               &contentType,
@@ -3127,25 +3135,34 @@ func (p *Posix) HeadObject(ctx context.Context, input *s3.HeadObjectInput) (*s3.
 		ObjectLockMode:            objectLockMode,
 		ObjectLockRetainUntilDate: objectLockRetainUntilDate,
 		StorageClass:              types.StorageClassStandard,
-		VersionId:                 input.VersionId,
+		VersionId:                 &versionId,
 	}, nil
 }
 
-func (p *Posix) GetObjectAttributes(ctx context.Context, input *s3.GetObjectAttributesInput) (s3response.GetObjectAttributesResult, error) {
+func (p *Posix) GetObjectAttributes(ctx context.Context, input *s3.GetObjectAttributesInput) (s3response.GetObjectAttributesResponse, error) {
 	data, err := p.HeadObject(ctx, &s3.HeadObjectInput{
 		Bucket:    input.Bucket,
 		Key:       input.Key,
 		VersionId: input.VersionId,
 	})
 	if err != nil {
-		return s3response.GetObjectAttributesResult{}, nil
+		if errors.Is(err, s3err.GetAPIError(s3err.ErrMethodNotAllowed)) && data != nil {
+			return s3response.GetObjectAttributesResponse{
+				DeleteMarker: data.DeleteMarker,
+				VersionId:    data.VersionId,
+			}, s3err.GetAPIError(s3err.ErrNoSuchKey)
+		}
+
+		return s3response.GetObjectAttributesResponse{}, err
 	}
 
-	return s3response.GetObjectAttributesResult{
+	return s3response.GetObjectAttributesResponse{
 		ETag:         data.ETag,
-		LastModified: data.LastModified,
 		ObjectSize:   data.ContentLength,
 		StorageClass: data.StorageClass,
+		LastModified: data.LastModified,
+		VersionId:    data.VersionId,
+		DeleteMarker: data.DeleteMarker,
 	}, nil
 }
 

backend/s3proxy/s3.go

@@ -392,7 +392,7 @@ func (s *S3Proxy) GetObject(ctx context.Context, input *s3.GetObjectInput) (*s3.
 	return output, nil
 }
 
-func (s *S3Proxy) GetObjectAttributes(ctx context.Context, input *s3.GetObjectAttributesInput) (s3response.GetObjectAttributesResult, error) {
+func (s *S3Proxy) GetObjectAttributes(ctx context.Context, input *s3.GetObjectAttributesInput) (s3response.GetObjectAttributesResponse, error) {
 	out, err := s.client.GetObjectAttributes(ctx, input)
 
 	parts := s3response.ObjectParts{}
@@ -419,12 +419,11 @@ func (s *S3Proxy) GetObjectAttributes(ctx context.Context, input *s3.GetObjectAt
 		}
 	}
 
-	return s3response.GetObjectAttributesResult{
+	return s3response.GetObjectAttributesResponse{
 		ETag:         out.ETag,
 		LastModified: out.LastModified,
 		ObjectSize:   out.ObjectSize,
 		StorageClass: out.StorageClass,
-		VersionId:    out.VersionId,
 		ObjectParts:  &parts,
 	}, handleError(err)
 }

s3api/controllers/backend_moq_test.go

@@ -83,7 +83,7 @@ var _ backend.Backend = &BackendMock{}
 //			GetObjectAclFunc: func(contextMoqParam context.Context, getObjectAclInput *s3.GetObjectAclInput) (*s3.GetObjectAclOutput, error) {
 //				panic("mock out the GetObjectAcl method")
 //			},
-//			GetObjectAttributesFunc: func(contextMoqParam context.Context, getObjectAttributesInput *s3.GetObjectAttributesInput) (s3response.GetObjectAttributesResult, error) {
+//			GetObjectAttributesFunc: func(contextMoqParam context.Context, getObjectAttributesInput *s3.GetObjectAttributesInput) (s3response.GetObjectAttributesResponse, error) {
 //				panic("mock out the GetObjectAttributes method")
 //			},
 //			GetObjectLegalHoldFunc: func(contextMoqParam context.Context, bucket string, object string, versionId string) (*bool, error) {
@@ -244,7 +244,7 @@ type BackendMock struct {
 	GetObjectAclFunc func(contextMoqParam context.Context, getObjectAclInput *s3.GetObjectAclInput) (*s3.GetObjectAclOutput, error)
 
 	// GetObjectAttributesFunc mocks the GetObjectAttributes method.
-	GetObjectAttributesFunc func(contextMoqParam context.Context, getObjectAttributesInput *s3.GetObjectAttributesInput) (s3response.GetObjectAttributesResult, error)
+	GetObjectAttributesFunc func(contextMoqParam context.Context, getObjectAttributesInput *s3.GetObjectAttributesInput) (s3response.GetObjectAttributesResponse, error)
 
 	// GetObjectLegalHoldFunc mocks the GetObjectLegalHold method.
 	GetObjectLegalHoldFunc func(contextMoqParam context.Context, bucket string, object string, versionId string) (*bool, error)
@@ -1518,7 +1518,7 @@ func (mock *BackendMock) GetObjectAclCalls() []struct {
 }
 
 // GetObjectAttributes calls GetObjectAttributesFunc.
-func (mock *BackendMock) GetObjectAttributes(contextMoqParam context.Context, getObjectAttributesInput *s3.GetObjectAttributesInput) (s3response.GetObjectAttributesResult, error) {
+func (mock *BackendMock) GetObjectAttributes(contextMoqParam context.Context, getObjectAttributesInput *s3.GetObjectAttributesInput) (s3response.GetObjectAttributesResponse, error) {
 	if mock.GetObjectAttributesFunc == nil {
 		panic("BackendMock.GetObjectAttributesFunc: method is nil but Backend.GetObjectAttributes was just called")
 	}

s3api/controllers/base.go

@@ -51,8 +51,9 @@ type S3ApiController struct {
 }
 
 const (
-	iso8601Format      = "20060102T150405Z"
+	iso8601Format             = "20060102T150405Z"
-	defaultContentType = "binary/octet-stream"
+	iso8601TimeFormatExtended = "Mon Jan _2 15:04:05 2006"
+	defaultContentType        = "binary/octet-stream"
 )
 
 func New(be backend.Backend, iam auth.IAMService, logger s3log.AuditLogger, evs s3event.S3EventSender, mm *metrics.Manager, debug bool, readonly bool) S3ApiController {
@@ -379,7 +380,19 @@ func (c S3ApiController) GetActions(ctx *fiber.Ctx) error {
 					BucketOwner: parsedAcl.Owner,
 				})
 		}
-		attrs := utils.ParseObjectAttributes(ctx)
+		attrs, err := utils.ParseObjectAttributes(ctx)
+		if err != nil {
+			if c.debug {
+				log.Printf("error parsing object attributes: %v", err)
+			}
+			return SendXMLResponse(ctx, nil, err,
+				&MetaOpts{
+					Logger:      c.logger,
+					MetricsMng:  c.mm,
+					Action:      metrics.ActionGetObjectAttributes,
+					BucketOwner: parsedAcl.Owner,
+				})
+		}
 
 		res, err := c.be.GetObjectAttributes(ctx.Context(),
 			&s3.GetObjectAttributesInput{
@@ -390,6 +403,22 @@ func (c S3ApiController) GetActions(ctx *fiber.Ctx) error {
 				VersionId:        &versionId,
 			})
 		if err != nil {
+			hdrs := []utils.CustomHeader{}
+
+			if res.DeleteMarker != nil {
+				hdrs = append(hdrs, utils.CustomHeader{
+					Key:   "x-amz-delete-marker",
+					Value: "true",
+				})
+			}
+			if getstring(res.VersionId) != "" {
+				hdrs = append(hdrs, utils.CustomHeader{
+					Key:   "x-amz-version-id",
+					Value: getstring(res.VersionId),
+				})
+			}
+
+			utils.SetResponseHeaders(ctx, hdrs)
 			return SendXMLResponse(ctx, nil, err,
 				&MetaOpts{
 					Logger:      c.logger,
@@ -398,7 +427,31 @@ func (c S3ApiController) GetActions(ctx *fiber.Ctx) error {
 					BucketOwner: parsedAcl.Owner,
 				})
 		}
-		return SendXMLResponse(ctx, utils.FilterObjectAttributes(attrs, res), err,
+
+		hdrs := []utils.CustomHeader{}
+
+		if getstring(res.VersionId) != "" {
+			hdrs = append(hdrs, utils.CustomHeader{
+				Key:   "x-amz-version-id",
+				Value: getstring(res.VersionId),
+			})
+		}
+		if res.DeleteMarker != nil && *res.DeleteMarker {
+			hdrs = append(hdrs, utils.CustomHeader{
+				Key:   "x-amz-delete-marker",
+				Value: "true",
+			})
+		}
+		if res.LastModified != nil {
+			hdrs = append(hdrs, utils.CustomHeader{
+				Key:   "Last-Modified",
+				Value: res.LastModified.UTC().Format(iso8601TimeFormatExtended),
+			})
+		}
+
+		utils.SetResponseHeaders(ctx, hdrs)
+
+		return SendXMLResponse(ctx, utils.FilterObjectAttributes(attrs, res), nil,
 			&MetaOpts{
 				Logger:      c.logger,
 				MetricsMng:  c.mm,
@@ -2900,15 +2953,6 @@ func (c S3ApiController) HeadObject(ctx *fiber.Ctx) error {
 				BucketOwner: parsedAcl.Owner,
 			})
 	}
-	if res == nil {
-		return SendResponse(ctx, fmt.Errorf("head object nil response"),
-			&MetaOpts{
-				Logger:      c.logger,
-				MetricsMng:  c.mm,
-				Action:      metrics.ActionHeadObject,
-				BucketOwner: parsedAcl.Owner,
-			})
-	}
 
 	utils.SetMetaHeaders(ctx, res.Metadata)
 	headers := []utils.CustomHeader{

s3api/controllers/base_test.go

@@ -187,8 +187,8 @@ func TestS3ApiController_GetActions(t *testing.T) {
 			GetObjectAclFunc: func(context.Context, *s3.GetObjectAclInput) (*s3.GetObjectAclOutput, error) {
 				return &s3.GetObjectAclOutput{}, nil
 			},
-			GetObjectAttributesFunc: func(context.Context, *s3.GetObjectAttributesInput) (s3response.GetObjectAttributesResult, error) {
+			GetObjectAttributesFunc: func(context.Context, *s3.GetObjectAttributesInput) (s3response.GetObjectAttributesResponse, error) {
-				return s3response.GetObjectAttributesResult{}, nil
+				return s3response.GetObjectAttributesResponse{}, nil
 			},
 			GetObjectFunc: func(context.Context, *s3.GetObjectInput) (*s3.GetObjectOutput, error) {
 				return &s3.GetObjectOutput{

s3api/utils/utils.go

@@ -254,35 +254,47 @@ func ParseDeleteObjects(objs []types.ObjectIdentifier) (result []string) {
 	return
 }
 
-func FilterObjectAttributes(attrs map[types.ObjectAttributes]struct{}, output s3response.GetObjectAttributesResult) s3response.GetObjectAttributesResult {
+func FilterObjectAttributes(attrs map[s3response.ObjectAttributes]struct{}, output s3response.GetObjectAttributesResponse) s3response.GetObjectAttributesResponse {
-	if _, ok := attrs[types.ObjectAttributesEtag]; !ok {
+	// These properties shouldn't appear in the final response body
+	output.LastModified = nil
+	output.VersionId = nil
+	output.DeleteMarker = nil
+
+	if _, ok := attrs[s3response.ObjectAttributesEtag]; !ok {
 		output.ETag = nil
 	}
-	if _, ok := attrs[types.ObjectAttributesObjectParts]; !ok {
+	if _, ok := attrs[s3response.ObjectAttributesObjectParts]; !ok {
 		output.ObjectParts = nil
 	}
-	if _, ok := attrs[types.ObjectAttributesObjectSize]; !ok {
+	if _, ok := attrs[s3response.ObjectAttributesObjectSize]; !ok {
 		output.ObjectSize = nil
 	}
-	if _, ok := attrs[types.ObjectAttributesStorageClass]; !ok {
+	if _, ok := attrs[s3response.ObjectAttributesStorageClass]; !ok {
 		output.StorageClass = ""
 	}
+	fmt.Printf("%+v\n", output)
 
 	return output
 }
 
-func ParseObjectAttributes(ctx *fiber.Ctx) map[types.ObjectAttributes]struct{} {
+func ParseObjectAttributes(ctx *fiber.Ctx) (map[s3response.ObjectAttributes]struct{}, error) {
-	attrs := map[types.ObjectAttributes]struct{}{}
+	attrs := map[s3response.ObjectAttributes]struct{}{}
+	var err error
 	ctx.Request().Header.VisitAll(func(key, value []byte) {
 		if string(key) == "X-Amz-Object-Attributes" {
 			oattrs := strings.Split(string(value), ",")
 			for _, a := range oattrs {
-				attrs[types.ObjectAttributes(a)] = struct{}{}
+				attr := s3response.ObjectAttributes(a)
+				if !attr.IsValid() {
+					err = s3err.GetAPIError(s3err.ErrInvalidObjectAttributes)
+					break
+				}
+				attrs[attr] = struct{}{}
 			}
 		}
 	})
 
-	return attrs
+	return attrs, err
 }
 
 type objLockCfg struct {

s3api/utils/utils_test.go

@@ -19,10 +19,12 @@ import (
 	"net/http"
 	"reflect"
 	"testing"
+	"time"
 
 	"github.com/aws/aws-sdk-go-v2/service/s3/types"
 	"github.com/gofiber/fiber/v2"
 	"github.com/valyala/fasthttp"
+	"github.com/versity/versitygw/backend"
 	"github.com/versity/versitygw/s3response"
 )
 
@@ -283,47 +285,68 @@ func TestParseUint(t *testing.T) {
 
 func TestFilterObjectAttributes(t *testing.T) {
 	type args struct {
-		attrs  map[types.ObjectAttributes]struct{}
+		attrs  map[s3response.ObjectAttributes]struct{}
-		output s3response.GetObjectAttributesResult
+		output s3response.GetObjectAttributesResponse
 	}
+
 	etag, objSize := "etag", int64(3222)
+	delMarker := true
+
 	tests := []struct {
 		name string
 		args args
-		want s3response.GetObjectAttributesResult
+		want s3response.GetObjectAttributesResponse
 	}{
 		{
 			name: "keep only ETag",
 			args: args{
-				attrs: map[types.ObjectAttributes]struct{}{
+				attrs: map[s3response.ObjectAttributes]struct{}{
-					types.ObjectAttributesEtag: {},
+					s3response.ObjectAttributesEtag: {},
 				},
-				output: s3response.GetObjectAttributesResult{
+				output: s3response.GetObjectAttributesResponse{
 					ObjectSize: &objSize,
 					ETag:       &etag,
 				},
 			},
-			want: s3response.GetObjectAttributesResult{ETag: &etag},
+			want: s3response.GetObjectAttributesResponse{ETag: &etag},
 		},
 		{
 			name: "keep multiple props",
 			args: args{
-				attrs: map[types.ObjectAttributes]struct{}{
+				attrs: map[s3response.ObjectAttributes]struct{}{
-					types.ObjectAttributesEtag:         {},
+					s3response.ObjectAttributesEtag:         {},
-					types.ObjectAttributesObjectSize:   {},
+					s3response.ObjectAttributesObjectSize:   {},
-					types.ObjectAttributesStorageClass: {},
+					s3response.ObjectAttributesStorageClass: {},
 				},
-				output: s3response.GetObjectAttributesResult{
+				output: s3response.GetObjectAttributesResponse{
 					ObjectSize:  &objSize,
 					ETag:        &etag,
 					ObjectParts: &s3response.ObjectParts{},
 					VersionId:   &etag,
 				},
 			},
-			want: s3response.GetObjectAttributesResult{
+			want: s3response.GetObjectAttributesResponse{
 				ETag:       &etag,
 				ObjectSize: &objSize,
-				VersionId:  &etag,
+			},
+		},
+		{
+			name: "make sure LastModified, DeleteMarker and VersionId are removed",
+			args: args{
+				attrs: map[s3response.ObjectAttributes]struct{}{
+					s3response.ObjectAttributesEtag: {},
+				},
+				output: s3response.GetObjectAttributesResponse{
+					ObjectSize:   &objSize,
+					ETag:         &etag,
+					ObjectParts:  &s3response.ObjectParts{},
+					VersionId:    &etag,
+					LastModified: backend.GetTimePtr(time.Now()),
+					DeleteMarker: &delMarker,
+				},
+			},
+			want: s3response.GetObjectAttributesResponse{
+				ETag: &etag,
 			},
 		},
 	}

s3err/s3err.go

@@ -70,6 +70,7 @@ const (
 	ErrInvalidMaxUploads
 	ErrInvalidMaxParts
 	ErrInvalidPartNumberMarker
+	ErrInvalidObjectAttributes
 	ErrInvalidPart
 	ErrInvalidPartNumber
 	ErrInternalError
@@ -219,6 +220,11 @@ var errorCodeResponse = map[ErrorCode]APIError{
 		Description:    "Argument partNumberMarker must be an integer.",
 		HTTPStatusCode: http.StatusBadRequest,
 	},
+	ErrInvalidObjectAttributes: {
+		Code:           "InvalidArgument",
+		Description:    "Invalid attribute name specified.",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
 	ErrNoSuchBucket: {
 		Code:           "NoSuchBucket",
 		Description:    "The specified bucket does not exist.",

s3response/s3response.go

@@ -78,30 +78,34 @@ type ListPartsResult struct {
 	Parts []Part `xml:"Part"`
 }
 
-type GetObjectAttributesResult struct {
+type ObjectAttributes string
-	ETag         *string
+
-	LastModified *time.Time
+const (
-	ObjectSize   *int64
+	ObjectAttributesEtag         ObjectAttributes = "ETag"
-	StorageClass types.StorageClass
+	ObjectAttributesChecksum     ObjectAttributes = "Checksum"
-	VersionId    *string
+	ObjectAttributesObjectParts  ObjectAttributes = "ObjectParts"
-	ObjectParts  *ObjectParts
+	ObjectAttributesStorageClass ObjectAttributes = "StorageClass"
+	ObjectAttributesObjectSize   ObjectAttributes = "ObjectSize"
+)
+
+func (o ObjectAttributes) IsValid() bool {
+	return o == ObjectAttributesChecksum ||
+		o == ObjectAttributesEtag ||
+		o == ObjectAttributesObjectParts ||
+		o == ObjectAttributesObjectSize ||
+		o == ObjectAttributesStorageClass
 }
 
-func (r GetObjectAttributesResult) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
+type GetObjectAttributesResponse struct {
-	type Alias GetObjectAttributesResult
+	ETag         *string
-	aux := &struct {
+	ObjectSize   *int64
-		LastModified *string `xml:"LastModified"`
+	StorageClass types.StorageClass `xml:",omitempty"`
-		*Alias
+	ObjectParts  *ObjectParts
-	}{
-		Alias: (*Alias)(&r),
-	}
 
-	if r.LastModified != nil {
+	// Not included in the response body
-		formattedTime := r.LastModified.UTC().Format(iso8601TimeFormat)
+	VersionId    *string
-		aux.LastModified = &formattedTime
+	LastModified *time.Time
-	}
+	DeleteMarker *bool
-
-	return e.EncodeElement(aux, start)
 }
 
 type ObjectParts struct {

tests/integration/group-tests.go

@@ -157,6 +157,7 @@ func TestHeadObject(s *S3Conf) {
 func TestGetObjectAttributes(s *S3Conf) {
 	GetObjectAttributes_non_existing_bucket(s)
 	GetObjectAttributes_non_existing_object(s)
+	GetObjectAttributes_invalid_attrs(s)
 	GetObjectAttributes_existing_object(s)
 }
 
@@ -565,6 +566,7 @@ func TestVersioning(s *S3Conf) {
 	// HeadObject action
 	Versioning_HeadObject_invalid_versionId(s)
 	Versioning_HeadObject_success(s)
+	Versioning_HeadObject_without_versionId(s)
 	Versioning_HeadObject_delete_marker(s)
 	// GetObject action
 	Versioning_GetObject_invalid_versionId(s)
@@ -572,6 +574,9 @@ func TestVersioning(s *S3Conf) {
 	Versioning_GetObject_delete_marker_without_versionId(s)
 	Versioning_GetObject_delete_marker(s)
 	Versioning_GetObject_null_versionId_obj(s)
+	// GetObjectAttributes action
+	Versioning_GetObjectAttributes_object_version(s)
+	Versioning_GetObjectAttributes_delete_marker(s)
 	// DeleteObject(s) actions
 	Versioning_DeleteObject_delete_object_version(s)
 	Versioning_DeleteObject_non_existing_object(s)
@@ -720,6 +725,7 @@ func GetIntTests() IntTests {
 		"HeadObject_success":                                                  HeadObject_success,
 		"GetObjectAttributes_non_existing_bucket":                             GetObjectAttributes_non_existing_bucket,
 		"GetObjectAttributes_non_existing_object":                             GetObjectAttributes_non_existing_object,
+		"GetObjectAttributes_invalid_attrs":                                   GetObjectAttributes_invalid_attrs,
 		"GetObjectAttributes_existing_object":                                 GetObjectAttributes_existing_object,
 		"GetObject_non_existing_key":                                          GetObject_non_existing_key,
 		"GetObject_directory_object_noslash":                                  GetObject_directory_object_noslash,
@@ -960,12 +966,15 @@ func GetIntTests() IntTests {
 		"Versioning_CopyObject_special_chars":                                 Versioning_CopyObject_special_chars,
 		"Versioning_HeadObject_invalid_versionId":                             Versioning_HeadObject_invalid_versionId,
 		"Versioning_HeadObject_success":                                       Versioning_HeadObject_success,
+		"Versioning_HeadObject_without_versionId":                             Versioning_HeadObject_without_versionId,
 		"Versioning_HeadObject_delete_marker":                                 Versioning_HeadObject_delete_marker,
 		"Versioning_GetObject_invalid_versionId":                              Versioning_GetObject_invalid_versionId,
 		"Versioning_GetObject_success":                                        Versioning_GetObject_success,
 		"Versioning_GetObject_delete_marker_without_versionId":                Versioning_GetObject_delete_marker_without_versionId,
 		"Versioning_GetObject_delete_marker":                                  Versioning_GetObject_delete_marker,
 		"Versioning_GetObject_null_versionId_obj":                             Versioning_GetObject_null_versionId_obj,
+		"Versioning_GetObjectAttributes_object_version":                       Versioning_GetObjectAttributes_object_version,
+		"Versioning_GetObjectAttributes_delete_marker":                        Versioning_GetObjectAttributes_delete_marker,
 		"Versioning_DeleteObject_delete_object_version":                       Versioning_DeleteObject_delete_object_version,
 		"Versioning_DeleteObject_non_existing_object":                         Versioning_DeleteObject_non_existing_object,
 		"Versioning_DeleteObject_delete_a_delete_marker":                      Versioning_DeleteObject_delete_a_delete_marker,

tests/integration/tests.go

@@ -3375,9 +3375,11 @@ func GetObjectAttributes_non_existing_object(s *S3Conf) error {
 	return actionHandler(s, testName, func(s3client *s3.Client, bucket string) error {
 		ctx, cancel := context.WithTimeout(context.Background(), shortTimeout)
 		_, err := s3client.GetObjectAttributes(ctx, &s3.GetObjectAttributesInput{
-			Bucket:           &bucket,
+			Bucket: &bucket,
-			Key:              getPtr("my-obj"),
+			Key:    getPtr("my-obj"),
-			ObjectAttributes: []types.ObjectAttributes{},
+			ObjectAttributes: []types.ObjectAttributes{
+				types.ObjectAttributesEtag,
+			},
 		})
 		cancel()
 		if err := checkSdkApiErr(err, "NoSuchKey"); err != nil {
@@ -3388,6 +3390,33 @@ func GetObjectAttributes_non_existing_object(s *S3Conf) error {
 	})
 }
 
+func GetObjectAttributes_invalid_attrs(s *S3Conf) error {
+	testName := "GetObjectAttributes_invalid_attrs"
+	return actionHandler(s, testName, func(s3client *s3.Client, bucket string) error {
+		obj := "my-obj"
+		_, err := putObjects(s3client, []string{obj}, bucket)
+		if err != nil {
+			return err
+		}
+
+		ctx, cancel := context.WithTimeout(context.Background(), shortTimeout)
+		_, err = s3client.GetObjectAttributes(ctx, &s3.GetObjectAttributesInput{
+			Bucket: &bucket,
+			Key:    &obj,
+			ObjectAttributes: []types.ObjectAttributes{
+				types.ObjectAttributesEtag,
+				types.ObjectAttributes("Invalid_argument"),
+			},
+		})
+		cancel()
+		if err := checkApiErr(err, s3err.GetAPIError(s3err.ErrInvalidObjectAttributes)); err != nil {
+			return err
+		}
+
+		return nil
+	})
+}
+
 func GetObjectAttributes_existing_object(s *S3Conf) error {
 	testName := "GetObjectAttributes_existing_object"
 	return actionHandler(s, testName, func(s3client *s3.Client, bucket string) error {
@@ -3438,11 +3467,14 @@ func GetObjectAttributes_existing_object(s *S3Conf) error {
 			return fmt.Errorf("expected object size to be %v, instead got %v", data_len, *out.ObjectSize)
 		}
 		if out.Checksum != nil {
-			return fmt.Errorf("expected checksum do be nil, instead got %v", *out.Checksum)
+			return fmt.Errorf("expected checksum to be nil, instead got %v", *out.Checksum)
 		}
 		if out.StorageClass != types.StorageClassStandard {
 			return fmt.Errorf("expected the storage class to be %v, instead got %v", types.StorageClassStandard, out.StorageClass)
 		}
+		if out.LastModified == nil {
+			return fmt.Errorf("expected non nil LastModified")
+		}
 
 		return nil
 	})
@@ -10848,19 +10880,6 @@ func PutObject_name_too_long(s *S3Conf) error {
 	})
 }
 
-// Versioning tests
-func PutBucketVersioning_non_existing_bucket(s *S3Conf) error {
-	testName := "PutBucketVersioning_non_existing_bucket"
-	return actionHandler(s, testName, func(s3client *s3.Client, bucket string) error {
-		err := putBucketVersioningStatus(s3client, getBucketName(), types.BucketVersioningStatusSuspended)
-		if err := checkApiErr(err, s3err.GetAPIError(s3err.ErrNoSuchBucket)); err != nil {
-			return err
-		}
-
-		return nil
-	})
-}
-
 func HeadObject_name_too_long(s *S3Conf) error {
 	testName := "HeadObject_name_too_long"
 	return actionHandler(s, testName, func(s3client *s3.Client, bucket string) error {
@@ -10878,6 +10897,35 @@ func HeadObject_name_too_long(s *S3Conf) error {
 	})
 }
 
+func DeleteObject_name_too_long(s *S3Conf) error {
+	testName := "DeleteObject_name_too_long"
+	return actionHandler(s, testName, func(s3client *s3.Client, bucket string) error {
+		ctx, cancel := context.WithTimeout(context.Background(), shortTimeout)
+		_, err := s3client.DeleteObject(ctx, &s3.DeleteObjectInput{
+			Bucket: &bucket,
+			Key:    getPtr(genRandString(300)),
+		})
+		cancel()
+		if err := checkApiErr(err, s3err.GetAPIError(s3err.ErrKeyTooLong)); err != nil {
+			return err
+		}
+		return nil
+	})
+}
+
+// Versioning tests
+func PutBucketVersioning_non_existing_bucket(s *S3Conf) error {
+	testName := "PutBucketVersioning_non_existing_bucket"
+	return actionHandler(s, testName, func(s3client *s3.Client, bucket string) error {
+		err := putBucketVersioningStatus(s3client, getBucketName(), types.BucketVersioningStatusSuspended)
+		if err := checkApiErr(err, s3err.GetAPIError(s3err.ErrNoSuchBucket)); err != nil {
+			return err
+		}
+
+		return nil
+	})
+}
+
 func PutBucketVersioning_invalid_status(s *S3Conf) error {
 	testName := "PutBucketVersioning_invalid_status"
 	return actionHandler(s, testName, func(s3client *s3.Client, bucket string) error {
@@ -11405,22 +11453,6 @@ func Versioning_HeadObject_invalid_versionId(s *S3Conf) error {
 	})
 }
 
-func DeleteObject_name_too_long(s *S3Conf) error {
-	testName := "DeleteObject_name_too_long"
-	return actionHandler(s, testName, func(s3client *s3.Client, bucket string) error {
-		ctx, cancel := context.WithTimeout(context.Background(), shortTimeout)
-		_, err := s3client.DeleteObject(ctx, &s3.DeleteObjectInput{
-			Bucket: &bucket,
-			Key:    getPtr(genRandString(300)),
-		})
-		cancel()
-		if err := checkApiErr(err, s3err.GetAPIError(s3err.ErrKeyTooLong)); err != nil {
-			return err
-		}
-		return nil
-	})
-}
-
 func Versioning_HeadObject_success(s *S3Conf) error {
 	testName := "Versioning_HeadObject_success"
 	return actionHandler(s, testName, func(s3client *s3.Client, bucket string) error {
@@ -11456,6 +11488,35 @@ func Versioning_HeadObject_success(s *S3Conf) error {
 	}, withVersioning(types.BucketVersioningStatusEnabled))
 }
 
+func Versioning_HeadObject_without_versionId(s *S3Conf) error {
+	testName := "Versioning_HeadObject_without_versionId"
+	return actionHandler(s, testName, func(s3client *s3.Client, bucket string) error {
+		obj := "my-obj"
+		versions, err := createObjVersions(s3client, bucket, obj, 3)
+		if err != nil {
+			return err
+		}
+
+		lastVersion := versions[0]
+
+		ctx, cancel := context.WithTimeout(context.Background(), shortTimeout)
+		res, err := s3client.HeadObject(ctx, &s3.HeadObjectInput{
+			Bucket: &bucket,
+			Key:    &obj,
+		})
+		cancel()
+		if err != nil {
+			return err
+		}
+
+		if getString(res.VersionId) != *lastVersion.VersionId {
+			return fmt.Errorf("expected versionId to be %v, instead got %v", *lastVersion.VersionId, getString(res.VersionId))
+		}
+
+		return nil
+	}, withVersioning(types.BucketVersioningStatusEnabled))
+}
+
 func Versioning_HeadObject_delete_marker(s *S3Conf) error {
 	testName := "Versioning_HeadObject_delete_marker"
 	return actionHandler(s, testName, func(s3client *s3.Client, bucket string) error {
@@ -11727,6 +11788,97 @@ func Versioning_GetObject_null_versionId_obj(s *S3Conf) error {
 	})
 }
 
+func Versioning_GetObjectAttributes_object_version(s *S3Conf) error {
+	testName := "Versioning_GetObjectAttributes_object_version"
+	return actionHandler(s, testName, func(s3client *s3.Client, bucket string) error {
+		obj := "my-obj"
+		versions, err := createObjVersions(s3client, bucket, obj, 1)
+		if err != nil {
+			return err
+		}
+		version := versions[0]
+
+		getObjAttrs := func(versionId *string) (*s3.GetObjectAttributesOutput, error) {
+			ctx, cancel := context.WithTimeout(context.Background(), shortTimeout)
+			res, err := s3client.GetObjectAttributes(ctx, &s3.GetObjectAttributesInput{
+				Bucket:    &bucket,
+				Key:       &obj,
+				VersionId: versionId,
+				ObjectAttributes: []types.ObjectAttributes{
+					types.ObjectAttributesEtag,
+				},
+			})
+			cancel()
+			return res, err
+		}
+
+		// By specifying the versionId
+		res, err := getObjAttrs(version.VersionId)
+		if err != nil {
+			return err
+		}
+
+		if getString(res.ETag) != *version.ETag {
+			return fmt.Errorf("expected the uploaded object ETag to be %v, instead got %v", *version.ETag, getString(res.ETag))
+		}
+		if getString(res.VersionId) != *version.VersionId {
+			return fmt.Errorf("expected the uploaded versionId to be %v, instead got %v", *version.VersionId, getString(res.VersionId))
+		}
+
+		// Without versionId
+		res, err = getObjAttrs(nil)
+		if err != nil {
+			return err
+		}
+
+		if getString(res.ETag) != *version.ETag {
+			return fmt.Errorf("expected the uploaded object ETag to be %v, instead got %v", *version.ETag, getString(res.ETag))
+		}
+		if getString(res.VersionId) != *version.VersionId {
+			return fmt.Errorf("expected the uploaded object versionId to be %v, instead got %v", *version.VersionId, getString(res.VersionId))
+		}
+
+		return nil
+	}, withVersioning(types.BucketVersioningStatusEnabled))
+}
+
+func Versioning_GetObjectAttributes_delete_marker(s *S3Conf) error {
+	testName := "Versioning_GetObjectAttributes_delete_marker"
+	return actionHandler(s, testName, func(s3client *s3.Client, bucket string) error {
+		obj := "my-obj"
+		_, err := createObjVersions(s3client, bucket, obj, 1)
+		if err != nil {
+			return err
+		}
+
+		ctx, cancel := context.WithTimeout(context.Background(), shortTimeout)
+		res, err := s3client.DeleteObject(ctx, &s3.DeleteObjectInput{
+			Bucket: &bucket,
+			Key:    &obj,
+		})
+		cancel()
+		if err != nil {
+			return err
+		}
+
+		ctx, cancel = context.WithTimeout(context.Background(), shortTimeout)
+		_, err = s3client.GetObjectAttributes(ctx, &s3.GetObjectAttributesInput{
+			Bucket:    &bucket,
+			Key:       &obj,
+			VersionId: res.VersionId,
+			ObjectAttributes: []types.ObjectAttributes{
+				types.ObjectAttributesEtag,
+			},
+		})
+		cancel()
+		if err := checkSdkApiErr(err, "NoSuchKey"); err != nil {
+			return err
+		}
+
+		return nil
+	}, withVersioning(types.BucketVersioningStatusEnabled))
+}
+
 func Versioning_DeleteObject_delete_object_version(s *S3Conf) error {
 	testName := "Versioning_DeleteObject_delete_object_version"
 	return actionHandler(s, testName, func(s3client *s3.Client, bucket string) error {