S3: S3 Object Retention API to include XML namespace support (#7517)

* Refactor S3 Object Retention API to include XML namespace support and improve compatibility with Veeam. Updated XML tags to remove hardcoded namespaces and added test cases for retention and legal hold configurations without namespaces.

* Added XMLNS field setting in both places

weed/s3api/s3_constants/header.go

@@ -23,6 +23,11 @@ import (
 	"github.com/gorilla/mux"
 )
 
+// S3 XML namespace
+const (
+	S3Namespace = "http://s3.amazonaws.com/doc/2006-03-01/"
+)
+
 // Standard S3 HTTP request constants
 const (
 	// S3 storage class

weed/s3api/s3api_bucket_handlers_object_lock_config.go

@@ -86,6 +86,9 @@ func (s3a *S3ApiServer) GetObjectLockConfigurationHandler(w http.ResponseWriter,
 
 	// Check if we have cached Object Lock configuration
 	if bucketConfig.ObjectLockConfig != nil {
+		// Set namespace for S3 compatibility
+		bucketConfig.ObjectLockConfig.XMLNS = s3_constants.S3Namespace
+		
 		// Use cached configuration and marshal it to XML for response
 		marshaledXML, err := xml.Marshal(bucketConfig.ObjectLockConfig)
 		if err != nil {
@@ -139,6 +142,9 @@ func (s3a *S3ApiServer) GetObjectLockConfigurationHandler(w http.ResponseWriter,
 		// not just ObjectLockConfig, before resetting the TTL
 		s3a.updateBucketConfigCacheFromEntry(freshEntry)
 
+		// Set namespace for S3 compatibility
+		objectLockConfig.XMLNS = s3_constants.S3Namespace
+
 		// Marshal and return the configuration
 		marshaledXML, err := xml.Marshal(objectLockConfig)
 		if err != nil {

weed/s3api/s3api_object_retention.go

@@ -57,37 +57,40 @@ const (
 
 // ObjectRetention represents S3 Object Retention configuration
 type ObjectRetention struct {
-	XMLName         xml.Name   `xml:"http://s3.amazonaws.com/doc/2006-03-01/ Retention"`
+	XMLNS           string     `xml:"xmlns,attr,omitempty"`
-	Mode            string     `xml:"http://s3.amazonaws.com/doc/2006-03-01/ Mode,omitempty"`
+	XMLName         xml.Name   `xml:"Retention"`
-	RetainUntilDate *time.Time `xml:"http://s3.amazonaws.com/doc/2006-03-01/ RetainUntilDate,omitempty"`
+	Mode            string     `xml:"Mode,omitempty"`
+	RetainUntilDate *time.Time `xml:"RetainUntilDate,omitempty"`
 }
 
 // ObjectLegalHold represents S3 Object Legal Hold configuration
 type ObjectLegalHold struct {
-	XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ LegalHold"`
+	XMLNS   string   `xml:"xmlns,attr,omitempty"`
-	Status  string   `xml:"http://s3.amazonaws.com/doc/2006-03-01/ Status,omitempty"`
+	XMLName xml.Name `xml:"LegalHold"`
+	Status  string   `xml:"Status,omitempty"`
 }
 
 // ObjectLockConfiguration represents S3 Object Lock Configuration
 type ObjectLockConfiguration struct {
-	XMLName           xml.Name        `xml:"http://s3.amazonaws.com/doc/2006-03-01/ ObjectLockConfiguration"`
+	XMLNS             string          `xml:"xmlns,attr,omitempty"`
-	ObjectLockEnabled string          `xml:"http://s3.amazonaws.com/doc/2006-03-01/ ObjectLockEnabled,omitempty"`
+	XMLName           xml.Name        `xml:"ObjectLockConfiguration"`
-	Rule              *ObjectLockRule `xml:"http://s3.amazonaws.com/doc/2006-03-01/ Rule,omitempty"`
+	ObjectLockEnabled string          `xml:"ObjectLockEnabled,omitempty"`
+	Rule              *ObjectLockRule `xml:"Rule,omitempty"`
 }
 
 // ObjectLockRule represents an Object Lock Rule
 type ObjectLockRule struct {
-	XMLName          xml.Name          `xml:"http://s3.amazonaws.com/doc/2006-03-01/ Rule"`
+	XMLName          xml.Name          `xml:"Rule"`
-	DefaultRetention *DefaultRetention `xml:"http://s3.amazonaws.com/doc/2006-03-01/ DefaultRetention,omitempty"`
+	DefaultRetention *DefaultRetention `xml:"DefaultRetention,omitempty"`
 }
 
 // DefaultRetention represents default retention settings
 // Implements custom XML unmarshal to track if Days/Years were present in XML
 type DefaultRetention struct {
-	XMLName  xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ DefaultRetention"`
+	XMLName  xml.Name `xml:"DefaultRetention"`
-	Mode     string   `xml:"http://s3.amazonaws.com/doc/2006-03-01/ Mode,omitempty"`
+	Mode     string   `xml:"Mode,omitempty"`
-	Days     int      `xml:"http://s3.amazonaws.com/doc/2006-03-01/ Days,omitempty"`
+	Days     int      `xml:"Days,omitempty"`
-	Years    int      `xml:"http://s3.amazonaws.com/doc/2006-03-01/ Years,omitempty"`
+	Years    int      `xml:"Years,omitempty"`
 	DaysSet  bool     `xml:"-"`
 	YearsSet bool     `xml:"-"`
 }
@@ -102,8 +105,8 @@ func (dr *DefaultRetention) UnmarshalXML(d *xml.Decoder, start xml.StartElement)
 	type Alias DefaultRetention
 	aux := &struct {
 		*Alias
-		Days  *int `xml:"http://s3.amazonaws.com/doc/2006-03-01/ Days,omitempty"`
+		Days  *int `xml:"Days,omitempty"`
-		Years *int `xml:"http://s3.amazonaws.com/doc/2006-03-01/ Years,omitempty"`
+		Years *int `xml:"Years,omitempty"`
 	}{Alias: (*Alias)(dr)}
 	if err := d.DecodeElement(aux, &start); err != nil {
 		glog.V(2).Infof("DefaultRetention.UnmarshalXML: decode error: %v", err)
@@ -245,6 +248,8 @@ func (s3a *S3ApiServer) getObjectRetention(bucket, object, versionId string) (*O
 		return nil, ErrNoRetentionConfiguration
 	}
 
+	// Set namespace for S3 compatibility
+	retention.XMLNS = s3_constants.S3Namespace
 	return retention, nil
 }
 
@@ -386,6 +391,8 @@ func (s3a *S3ApiServer) getObjectLegalHold(bucket, object, versionId string) (*O
 		return nil, ErrNoLegalHoldConfiguration
 	}
 
+	// Set namespace for S3 compatibility
+	legalHold.XMLNS = s3_constants.S3Namespace
 	return legalHold, nil
 }
 

weed/s3api/s3api_object_retention_test.go

@@ -201,6 +201,30 @@ func TestParseObjectRetention(t *testing.T) {
 				RetainUntilDate: timePtr(time.Date(2025, 1, 1, 0, 0, 0, 0, time.UTC)),
 			},
 		},
+		{
+			name: "Valid retention XML without namespace (Veeam compatibility)",
+			xmlBody: `<Retention>
+				<Mode>GOVERNANCE</Mode>
+				<RetainUntilDate>2024-12-31T23:59:59Z</RetainUntilDate>
+			</Retention>`,
+			expectError: false,
+			expectedResult: &ObjectRetention{
+				Mode:            "GOVERNANCE",
+				RetainUntilDate: timePtr(time.Date(2024, 12, 31, 23, 59, 59, 0, time.UTC)),
+			},
+		},
+		{
+			name: "Valid compliance retention XML without namespace (Veeam compatibility)",
+			xmlBody: `<Retention>
+				<Mode>COMPLIANCE</Mode>
+				<RetainUntilDate>2025-01-01T00:00:00Z</RetainUntilDate>
+			</Retention>`,
+			expectError: false,
+			expectedResult: &ObjectRetention{
+				Mode:            "COMPLIANCE",
+				RetainUntilDate: timePtr(time.Date(2025, 1, 1, 0, 0, 0, 0, time.UTC)),
+			},
+		},
 		{
 			name:        "Empty XML body",
 			xmlBody:     "",
@@ -311,6 +335,26 @@ func TestParseObjectLegalHold(t *testing.T) {
 				Status: "OFF",
 			},
 		},
+		{
+			name: "Valid legal hold ON without namespace",
+			xmlBody: `<LegalHold>
+				<Status>ON</Status>
+			</LegalHold>`,
+			expectError: false,
+			expectedResult: &ObjectLegalHold{
+				Status: "ON",
+			},
+		},
+		{
+			name: "Valid legal hold OFF without namespace",
+			xmlBody: `<LegalHold>
+				<Status>OFF</Status>
+			</LegalHold>`,
+			expectError: false,
+			expectedResult: &ObjectLegalHold{
+				Status: "OFF",
+			},
+		},
 		{
 			name:        "Empty XML body",
 			xmlBody:     "",
@@ -405,6 +449,38 @@ func TestParseObjectLockConfiguration(t *testing.T) {
 				},
 			},
 		},
+		{
+			name: "Valid object lock configuration without namespace",
+			xmlBody: `<ObjectLockConfiguration>
+				<ObjectLockEnabled>Enabled</ObjectLockEnabled>
+			</ObjectLockConfiguration>`,
+			expectError: false,
+			expectedResult: &ObjectLockConfiguration{
+				ObjectLockEnabled: "Enabled",
+			},
+		},
+		{
+			name: "Valid object lock configuration with rule without namespace",
+			xmlBody: `<ObjectLockConfiguration>
+				<ObjectLockEnabled>Enabled</ObjectLockEnabled>
+				<Rule>
+					<DefaultRetention>
+						<Mode>GOVERNANCE</Mode>
+						<Days>30</Days>
+					</DefaultRetention>
+				</Rule>
+			</ObjectLockConfiguration>`,
+			expectError: false,
+			expectedResult: &ObjectLockConfiguration{
+				ObjectLockEnabled: "Enabled",
+				Rule: &ObjectLockRule{
+					DefaultRetention: &DefaultRetention{
+						Mode: "GOVERNANCE",
+						Days: 30,
+					},
+				},
+			},
+		},
 		{
 			name:        "Empty XML body",
 			xmlBody:     "",