seaweedfs/weed/s3api/s3tables/handler_policy.go

package s3tables

import (
	"bytes"
	"encoding/json"
	"errors"
	"fmt"
	"net/http"
	"strings"

	"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
)

// extractResourceOwnerAndBucket extracts ownership info and bucket name from resource metadata.
// This helper consolidates the repeated pattern used in handleTagResource, handleListTagsForResource,
// and handleUntagResource.
func (h *S3TablesHandler) extractResourceOwnerAndBucket(
	data []byte,
	resourcePath string,
	rType ResourceType,
) (ownerAccountID, bucketName string, err error) {
	// Extract bucket name from resource path (format: /buckets/{bucket}/... for both tables and buckets)
	parts := strings.Split(strings.Trim(resourcePath, "/"), "/")
	if len(parts) >= 2 {
		bucketName = parts[1]
	}

	if rType == ResourceTypeTable {
		var meta tableMetadataInternal
		if err := json.Unmarshal(data, &meta); err != nil {
			return "", "", err
		}
		ownerAccountID = meta.OwnerAccountID
	} else {
		var meta tableBucketMetadata
		if err := json.Unmarshal(data, &meta); err != nil {
			return "", "", err
		}
		ownerAccountID = meta.OwnerAccountID
	}
	return ownerAccountID, bucketName, nil
}

// handlePutTableBucketPolicy puts a policy on a table bucket
func (h *S3TablesHandler) handlePutTableBucketPolicy(w http.ResponseWriter, r *http.Request, filerClient FilerClient) error {

	var req PutTableBucketPolicyRequest
	if err := h.readRequestBody(r, &req); err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	if req.TableBucketARN == "" {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, "tableBucketARN is required")
		return fmt.Errorf("tableBucketARN is required")
	}

	if req.ResourcePolicy == "" {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, "resourcePolicy is required")
		return fmt.Errorf("resourcePolicy is required")
	}

	if err := validatePolicyDocument(req.ResourcePolicy); err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	bucketName, err := parseBucketNameFromARN(req.TableBucketARN)
	if err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	// Check if bucket exists and get metadata for ownership check
	bucketPath := GetTableBucketPath(bucketName)
	var bucketMetadata tableBucketMetadata
	var bucketPolicy string
	var bucketTags map[string]string
	err = filerClient.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
		data, err := h.getExtendedAttribute(r.Context(), client, bucketPath, ExtendedKeyMetadata)
		if err != nil {
			return err
		}
		if err := json.Unmarshal(data, &bucketMetadata); err != nil {
			return fmt.Errorf("failed to unmarshal bucket metadata: %w", err)
		}
		if bucketPolicy, err = h.readPolicy(r, client, bucketPath); err != nil {
			return err
		}
		bucketTags, err = h.readTags(r.Context(), client, bucketPath)
		return err
	})

	if err != nil {
		if errors.Is(err, filer_pb.ErrNotFound) {
			h.writeError(w, http.StatusNotFound, ErrCodeNoSuchBucket, fmt.Sprintf("table bucket %s not found", bucketName))
		} else {
			h.writeError(w, http.StatusInternalServerError, ErrCodeInternalError, fmt.Sprintf("failed to check table bucket: %v", err))
		}
		return err
	}

	bucketARN := h.generateTableBucketARN(bucketMetadata.OwnerAccountID, bucketName)
	principal := h.getAccountID(r)
	identityActions := getIdentityActions(r)
	ctx := &PolicyContext{
		TrustedIssuers:   h.trustedIssuers(r),
		IsLocalAccountID: h.localAccountIDs,
		TableBucketName:  bucketName,
		TableBucketTags:  bucketTags,
		ResourceTags:     bucketTags,
		IdentityActions:  identityActions,
		DefaultAllow:     h.defaultAllowFor(r),
	}
	if deniedByPolicy("PutTableBucketPolicy", principal, bucketPolicy, bucketARN, ctx) ||
		!CheckPermissionWithContext("PutTableBucketPolicy", principal, bucketMetadata.OwnerAccountID, "", bucketARN, ctx) {
		h.writeError(w, http.StatusForbidden, ErrCodeAccessDenied, "not authorized to put table bucket policy")
		return NewAuthError("PutTableBucketPolicy", principal, "not authorized to put table bucket policy")
	}

	// Conditional on the policy this request was authorized against: a Deny
	// landing mid-request sends the caller back through authorization.
	err = filerClient.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
		return h.mutateEntryExtended(r.Context(), client, bucketPath, func(extended map[string][]byte) error {
			if !bytes.Equal(extended[ExtendedKeyPolicy], []byte(bucketPolicy)) {
				return fmt.Errorf("%w: %s", ErrConcurrentUpdate, ExtendedKeyPolicy)
			}
			extended[ExtendedKeyPolicy] = []byte(req.ResourcePolicy)
			return nil
		})
	})

	if err != nil {
		if errors.Is(err, ErrConcurrentUpdate) {
			h.writeError(w, http.StatusConflict, ErrCodeConflict, "table bucket policy changed concurrently, retry the request")
		} else {
			h.writeError(w, http.StatusInternalServerError, ErrCodeInternalError, "failed to put table bucket policy")
		}
		return err
	}

	h.writeJSON(w, http.StatusOK, nil)
	return nil
}

// handleGetTableBucketPolicy gets the policy of a table bucket
func (h *S3TablesHandler) handleGetTableBucketPolicy(w http.ResponseWriter, r *http.Request, filerClient FilerClient) error {

	var req GetTableBucketPolicyRequest
	if err := h.readRequestBody(r, &req); err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	if req.TableBucketARN == "" {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, "tableBucketARN is required")
		return fmt.Errorf("tableBucketARN is required")
	}

	bucketName, err := parseBucketNameFromARN(req.TableBucketARN)
	if err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	bucketPath := GetTableBucketPath(bucketName)
	var policy []byte
	var bucketMetadata tableBucketMetadata

	err = filerClient.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
		// Get metadata for ownership check
		data, err := h.getExtendedAttribute(r.Context(), client, bucketPath, ExtendedKeyMetadata)
		if err != nil {
			return err
		}
		if err := json.Unmarshal(data, &bucketMetadata); err != nil {
			return fmt.Errorf("failed to unmarshal bucket metadata: %w", err)
		}

		// Get policy
		policy, err = h.getExtendedAttribute(r.Context(), client, bucketPath, ExtendedKeyPolicy)
		return err
	})

	if err != nil {
		if errors.Is(err, filer_pb.ErrNotFound) {
			h.writeError(w, http.StatusNotFound, ErrCodeNoSuchBucket, fmt.Sprintf("table bucket %s not found", bucketName))
			return err
		}
		if errors.Is(err, ErrAttributeNotFound) {
			h.writeError(w, http.StatusNotFound, ErrCodeNoSuchPolicy, "table bucket policy not found")
			return err
		}
		h.writeError(w, http.StatusInternalServerError, ErrCodeInternalError, fmt.Sprintf("failed to get table bucket policy: %v", err))
		return err
	}

	bucketARN := h.generateTableBucketARN(bucketMetadata.OwnerAccountID, bucketName)
	principal := h.getAccountID(r)
	identityActions := getIdentityActions(r)
	if !CheckPermissionWithContext("GetTableBucketPolicy", principal, bucketMetadata.OwnerAccountID, string(policy), bucketARN, &PolicyContext{
		TrustedIssuers:   h.trustedIssuers(r),
		IsLocalAccountID: h.localAccountIDs,
		TableBucketName:  bucketName,
		IdentityActions:  identityActions,
		DefaultAllow:     h.defaultAllowFor(r),
	}) {
		h.writeError(w, http.StatusForbidden, ErrCodeAccessDenied, "not authorized to get table bucket policy")
		return NewAuthError("GetTableBucketPolicy", principal, "not authorized to get table bucket policy")
	}

	resp := &GetTableBucketPolicyResponse{
		ResourcePolicy: string(policy),
	}

	h.writeJSON(w, http.StatusOK, resp)
	return nil
}

// handleDeleteTableBucketPolicy deletes the policy of a table bucket
func (h *S3TablesHandler) handleDeleteTableBucketPolicy(w http.ResponseWriter, r *http.Request, filerClient FilerClient) error {

	var req DeleteTableBucketPolicyRequest
	if err := h.readRequestBody(r, &req); err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	if req.TableBucketARN == "" {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, "tableBucketARN is required")
		return fmt.Errorf("tableBucketARN is required")
	}

	bucketName, err := parseBucketNameFromARN(req.TableBucketARN)
	if err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	bucketPath := GetTableBucketPath(bucketName)

	// Check if bucket exists and get metadata for ownership check
	var bucketMetadata tableBucketMetadata
	var bucketPolicy string
	err = filerClient.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
		data, err := h.getExtendedAttribute(r.Context(), client, bucketPath, ExtendedKeyMetadata)
		if err != nil {
			return err
		}
		if err := json.Unmarshal(data, &bucketMetadata); err != nil {
			return fmt.Errorf("failed to unmarshal bucket metadata: %w", err)
		}

		// Fetch bucket policy if it exists
		policyData, err := h.getExtendedAttribute(r.Context(), client, bucketPath, ExtendedKeyPolicy)
		if err != nil {
			if !errors.Is(err, ErrAttributeNotFound) {
				return fmt.Errorf("failed to read bucket policy: %w", err)
			}
			// Policy not found is not an error; bucketPolicy remains empty
		} else {
			bucketPolicy = string(policyData)
		}

		return nil
	})
	if err != nil {
		if errors.Is(err, filer_pb.ErrNotFound) {
			h.writeError(w, http.StatusNotFound, ErrCodeNoSuchBucket, fmt.Sprintf("table bucket %s not found", bucketName))
		} else {
			h.writeError(w, http.StatusInternalServerError, ErrCodeInternalError, fmt.Sprintf("failed to check table bucket: %v", err))
		}
		return err
	}

	bucketARN := h.generateTableBucketARN(bucketMetadata.OwnerAccountID, bucketName)
	principal := h.getAccountID(r)
	identityActions := getIdentityActions(r)
	if !CheckPermissionWithContext("DeleteTableBucketPolicy", principal, bucketMetadata.OwnerAccountID, bucketPolicy, bucketARN, &PolicyContext{
		TrustedIssuers:   h.trustedIssuers(r),
		IsLocalAccountID: h.localAccountIDs,
		TableBucketName:  bucketName,
		IdentityActions:  identityActions,
		DefaultAllow:     h.defaultAllowFor(r),
	}) {
		h.writeError(w, http.StatusForbidden, ErrCodeAccessDenied, "not authorized to delete table bucket policy")
		return NewAuthError("DeleteTableBucketPolicy", principal, "not authorized to delete table bucket policy")
	}

	err = filerClient.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
		return h.deleteExtendedAttribute(r.Context(), client, bucketPath, ExtendedKeyPolicy)
	})

	if err != nil && !errors.Is(err, ErrAttributeNotFound) {
		h.writeError(w, http.StatusInternalServerError, ErrCodeInternalError, "failed to delete table bucket policy")
		return err
	}

	h.writeJSON(w, http.StatusOK, nil)
	return nil
}

// handlePutTablePolicy puts a policy on a table
func (h *S3TablesHandler) handlePutTablePolicy(w http.ResponseWriter, r *http.Request, filerClient FilerClient) error {

	var req PutTablePolicyRequest
	if err := h.readRequestBody(r, &req); err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	if req.TableBucketARN == "" || len(req.Namespace) == 0 || req.Name == "" {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, "tableBucketARN, namespace, and name are required")
		return fmt.Errorf("missing required parameters")
	}

	namespaceName, err := validateNamespace(req.Namespace)
	if err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	if req.ResourcePolicy == "" {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, "resourcePolicy is required")
		return fmt.Errorf("resourcePolicy is required")
	}

	if err := validatePolicyDocument(req.ResourcePolicy); err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	bucketName, err := parseBucketNameFromARN(req.TableBucketARN)
	if err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	// Check if table exists
	tableName, err := validateTableName(req.Name)
	if err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}
	tablePath := GetTablePath(bucketName, namespaceName, tableName)
	bucketPath := GetTableBucketPath(bucketName)

	var metadata tableMetadataInternal
	var bucketPolicy, tablePolicy string
	var bucketTags, tableTags map[string]string
	err = filerClient.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
		data, err := h.getExtendedAttribute(r.Context(), client, tablePath, ExtendedKeyMetadata)
		if err != nil {
			return err
		}
		if err := json.Unmarshal(data, &metadata); err != nil {
			return fmt.Errorf("failed to unmarshal table metadata: %w", err)
		}

		if bucketPolicy, err = h.readPolicy(r, client, bucketPath); err != nil {
			return err
		}
		if bucketTags, err = h.readTags(r.Context(), client, bucketPath); err != nil {
			return err
		}
		if tablePolicy, err = h.readPolicy(r, client, tablePath); err != nil {
			return err
		}
		tableTags, err = h.readTags(r.Context(), client, tablePath)
		return err
	})

	if err != nil {
		if errors.Is(err, filer_pb.ErrNotFound) {
			h.writeError(w, http.StatusNotFound, ErrCodeNoSuchTable, fmt.Sprintf("table %s not found", tableName))
		} else {
			h.writeError(w, http.StatusInternalServerError, ErrCodeInternalError, fmt.Sprintf("failed to check table: %v", err))
		}
		return err
	}

	tableARN := h.generateTableARN(metadata.OwnerAccountID, bucketName, namespaceName+"/"+tableName)
	principal := h.getAccountID(r)
	identityActions := getIdentityActions(r)
	ctx := &PolicyContext{
		TrustedIssuers:   h.trustedIssuers(r),
		IsLocalAccountID: h.localAccountIDs,
		TableBucketName:  bucketName,
		Namespace:        namespaceName,
		TableName:        tableName,
		TableBucketTags:  bucketTags,
		ResourceTags:     tableTags,
		IdentityActions:  identityActions,
		DefaultAllow:     h.defaultAllowFor(r),
	}
	if deniedByPolicy("PutTablePolicy", principal, tablePolicy, tableARN, ctx) ||
		!CheckPermissionWithContext("PutTablePolicy", principal, metadata.OwnerAccountID, bucketPolicy, tableARN, ctx) {
		h.writeError(w, http.StatusForbidden, ErrCodeAccessDenied, "not authorized to put table policy")
		return NewAuthError("PutTablePolicy", principal, "not authorized to put table policy")
	}

	err = filerClient.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
		return h.mutateEntryExtended(r.Context(), client, tablePath, func(extended map[string][]byte) error {
			if !bytes.Equal(extended[ExtendedKeyPolicy], []byte(tablePolicy)) {
				return fmt.Errorf("%w: %s", ErrConcurrentUpdate, ExtendedKeyPolicy)
			}
			extended[ExtendedKeyPolicy] = []byte(req.ResourcePolicy)
			return nil
		})
	})

	if err != nil {
		if errors.Is(err, ErrConcurrentUpdate) {
			h.writeError(w, http.StatusConflict, ErrCodeConflict, "table policy changed concurrently, retry the request")
		} else {
			h.writeError(w, http.StatusInternalServerError, ErrCodeInternalError, "failed to put table policy")
		}
		return err
	}

	h.writeJSON(w, http.StatusOK, nil)
	return nil
}

// handleGetTablePolicy gets the policy of a table
func (h *S3TablesHandler) handleGetTablePolicy(w http.ResponseWriter, r *http.Request, filerClient FilerClient) error {

	var req GetTablePolicyRequest
	if err := h.readRequestBody(r, &req); err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	if req.TableBucketARN == "" || len(req.Namespace) == 0 || req.Name == "" {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, "tableBucketARN, namespace, and name are required")
		return fmt.Errorf("missing required parameters")
	}

	namespaceName, err := validateNamespace(req.Namespace)
	if err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	bucketName, err := parseBucketNameFromARN(req.TableBucketARN)
	if err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	tableName, err := validateTableName(req.Name)
	if err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}
	tablePath := GetTablePath(bucketName, namespaceName, tableName)
	bucketPath := GetTableBucketPath(bucketName)
	var policy []byte
	var metadata tableMetadataInternal
	var bucketPolicy string
	var bucketTags, tableTags map[string]string

	err = filerClient.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
		// Get metadata for ownership check
		data, err := h.getExtendedAttribute(r.Context(), client, tablePath, ExtendedKeyMetadata)
		if err != nil {
			return err
		}
		if err := json.Unmarshal(data, &metadata); err != nil {
			return fmt.Errorf("failed to unmarshal table metadata: %w", err)
		}

		// Get policy
		policy, err = h.getExtendedAttribute(r.Context(), client, tablePath, ExtendedKeyPolicy)
		if err != nil {
			return err
		}

		if bucketPolicy, err = h.readPolicy(r, client, bucketPath); err != nil {
			return err
		}
		if bucketTags, err = h.readTags(r.Context(), client, bucketPath); err != nil {
			return err
		}
		tableTags, err = h.readTags(r.Context(), client, tablePath)
		return err
	})

	if err != nil {
		if errors.Is(err, filer_pb.ErrNotFound) {
			h.writeError(w, http.StatusNotFound, ErrCodeNoSuchTable, fmt.Sprintf("table %s not found", tableName))
			return err
		}
		if errors.Is(err, ErrAttributeNotFound) {
			h.writeError(w, http.StatusNotFound, ErrCodeNoSuchPolicy, "table policy not found")
			return err
		}
		h.writeError(w, http.StatusInternalServerError, ErrCodeInternalError, fmt.Sprintf("failed to get table policy: %v", err))
		return err
	}

	tableARN := h.generateTableARN(metadata.OwnerAccountID, bucketName, namespaceName+"/"+tableName)
	principal := h.getAccountID(r)
	identityActions := getIdentityActions(r)
	ctx := &PolicyContext{
		TrustedIssuers:   h.trustedIssuers(r),
		IsLocalAccountID: h.localAccountIDs,
		TableBucketName:  bucketName,
		Namespace:        namespaceName,
		TableName:        tableName,
		TableBucketTags:  bucketTags,
		ResourceTags:     tableTags,
		IdentityActions:  identityActions,
		DefaultAllow:     h.defaultAllowFor(r),
	}
	if deniedByPolicy("GetTablePolicy", principal, string(policy), tableARN, ctx) ||
		!CheckPermissionWithContext("GetTablePolicy", principal, metadata.OwnerAccountID, bucketPolicy, tableARN, ctx) {
		h.writeError(w, http.StatusForbidden, ErrCodeAccessDenied, "not authorized to get table policy")
		return NewAuthError("GetTablePolicy", principal, "not authorized to get table policy")
	}

	resp := &GetTablePolicyResponse{
		ResourcePolicy: string(policy),
	}

	h.writeJSON(w, http.StatusOK, resp)
	return nil
}

// handleDeleteTablePolicy deletes the policy of a table
func (h *S3TablesHandler) handleDeleteTablePolicy(w http.ResponseWriter, r *http.Request, filerClient FilerClient) error {

	var req DeleteTablePolicyRequest
	if err := h.readRequestBody(r, &req); err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	if req.TableBucketARN == "" || len(req.Namespace) == 0 || req.Name == "" {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, "tableBucketARN, namespace, and name are required")
		return fmt.Errorf("missing required parameters")
	}

	namespaceName, err := validateNamespace(req.Namespace)
	if err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	bucketName, err := parseBucketNameFromARN(req.TableBucketARN)
	if err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	tableName, err := validateTableName(req.Name)
	if err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}
	tablePath := GetTablePath(bucketName, namespaceName, tableName)
	bucketPath := GetTableBucketPath(bucketName)

	// Check if table exists
	var metadata tableMetadataInternal
	var bucketPolicy, tablePolicy string
	var bucketTags, tableTags map[string]string
	err = filerClient.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
		data, err := h.getExtendedAttribute(r.Context(), client, tablePath, ExtendedKeyMetadata)
		if err != nil {
			return err
		}
		if err := json.Unmarshal(data, &metadata); err != nil {
			return fmt.Errorf("failed to unmarshal table metadata: %w", err)
		}

		if bucketPolicy, err = h.readPolicy(r, client, bucketPath); err != nil {
			return err
		}
		if bucketTags, err = h.readTags(r.Context(), client, bucketPath); err != nil {
			return err
		}
		if tablePolicy, err = h.readPolicy(r, client, tablePath); err != nil {
			return err
		}
		tableTags, err = h.readTags(r.Context(), client, tablePath)
		return err
	})
	if err != nil {
		if errors.Is(err, filer_pb.ErrNotFound) {
			h.writeError(w, http.StatusNotFound, ErrCodeNoSuchTable, fmt.Sprintf("table %s not found", tableName))
		} else {
			h.writeError(w, http.StatusInternalServerError, ErrCodeInternalError, fmt.Sprintf("failed to check table: %v", err))
		}
		return err
	}

	tableARN := h.generateTableARN(metadata.OwnerAccountID, bucketName, namespaceName+"/"+tableName)
	principal := h.getAccountID(r)
	identityActions := getIdentityActions(r)
	ctx := &PolicyContext{
		TrustedIssuers:   h.trustedIssuers(r),
		IsLocalAccountID: h.localAccountIDs,
		TableBucketName:  bucketName,
		Namespace:        namespaceName,
		TableName:        tableName,
		TableBucketTags:  bucketTags,
		ResourceTags:     tableTags,
		IdentityActions:  identityActions,
		DefaultAllow:     h.defaultAllowFor(r),
	}
	if deniedByPolicy("DeleteTablePolicy", principal, tablePolicy, tableARN, ctx) ||
		!CheckPermissionWithContext("DeleteTablePolicy", principal, metadata.OwnerAccountID, bucketPolicy, tableARN, ctx) {
		h.writeError(w, http.StatusForbidden, ErrCodeAccessDenied, "not authorized to delete table policy")
		return NewAuthError("DeleteTablePolicy", principal, "not authorized to delete table policy")
	}

	err = filerClient.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
		return h.removeExtendedAttributesIf(r.Context(), client, tablePath,
			map[string][]byte{ExtendedKeyPolicy: []byte(tablePolicy)},
			ExtendedKeyPolicy)
	})

	if err != nil && !errors.Is(err, ErrAttributeNotFound) {
		if errors.Is(err, ErrConcurrentUpdate) {
			h.writeError(w, http.StatusConflict, ErrCodeConflict, "table policy changed concurrently, retry the request")
		} else {
			h.writeError(w, http.StatusInternalServerError, ErrCodeInternalError, "failed to delete table policy")
		}
		return err
	}

	h.writeJSON(w, http.StatusOK, nil)
	return nil
}

// handleTagResource adds tags to a resource
func (h *S3TablesHandler) handleTagResource(w http.ResponseWriter, r *http.Request, filerClient FilerClient) error {
	var req TagResourceRequest
	if err := h.readRequestBody(r, &req); err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	if req.ResourceARN == "" {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, "resourceArn is required")
		return fmt.Errorf("resourceArn is required")
	}

	if len(req.Tags) == 0 {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, "tags are required")
		return fmt.Errorf("tags are required")
	}

	// Parse resource ARN to determine if it's a bucket or table
	resourcePath, extendedKey, rType, err := h.resolveResourcePath(req.ResourceARN)
	if err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	// Read existing tags and merge, AND check permissions based on metadata ownership
	existingTags := make(map[string]string)
	var bucketPolicy, tablePolicy string
	var bucketTags map[string]string
	var tableNamespace, tableName string
	requestTagKeys := mapKeys(req.Tags)
	err = filerClient.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
		// Read metadata for ownership check
		data, err := h.getExtendedAttribute(r.Context(), client, resourcePath, ExtendedKeyMetadata)
		if err != nil {
			if errors.Is(err, filer_pb.ErrNotFound) || errors.Is(err, ErrAttributeNotFound) {
				return h.absentTagTargetError(r, client, "TagResource", "not authorized to tag resource", req.ResourceARN, rType)
			}
			return err
		}

		ownerAccountID, bucketName, err := h.extractResourceOwnerAndBucket(data, resourcePath, rType)
		if err != nil {
			return err
		}

		// Fetch bucket policy if we have a bucket name
		if bucketName != "" {
			bucketPath := GetTableBucketPath(bucketName)
			if bucketPolicy, err = h.readPolicy(r, client, bucketPath); err != nil {
				return err
			}
			bucketTags, err = h.readTags(r.Context(), client, bucketPath)
			if err != nil {
				return err
			}
		}

		if rType == ResourceTypeTable {
			if _, tableNamespace, tableName, err = parseTableFromARN(req.ResourceARN); err != nil {
				return err
			}
			if tablePolicy, err = h.readPolicy(r, client, resourcePath); err != nil {
				return err
			}
		}

		// Read existing tags
		data, err = h.getExtendedAttribute(r.Context(), client, resourcePath, extendedKey)
		if err != nil {
			if !errors.Is(err, ErrAttributeNotFound) {
				return err
			}
		} else if err := json.Unmarshal(data, &existingTags); err != nil {
			return err
		}

		var resourceARN string
		if rType == ResourceTypeTable {
			resourceARN = h.generateTableARN(ownerAccountID, bucketName, tableNamespace+"/"+tableName)
		} else {
			resourceARN = h.generateTableBucketARN(ownerAccountID, bucketName)
		}
		principal := h.getAccountID(r)
		identityActions := getIdentityActions(r)
		ctx := &PolicyContext{
			TrustedIssuers:   h.trustedIssuers(r),
			IsLocalAccountID: h.localAccountIDs,
			TableBucketName:  bucketName,
			Namespace:        tableNamespace,
			TableName:        tableName,
			TableBucketTags:  bucketTags,
			RequestTags:      req.Tags,
			TagKeys:          requestTagKeys,
			ResourceTags:     existingTags,
			IdentityActions:  identityActions,
			DefaultAllow:     h.defaultAllowFor(r),
		}
		if deniedByPolicy("TagResource", principal, tablePolicy, resourceARN, ctx) ||
			!CheckPermissionWithContext("TagResource", principal, ownerAccountID, bucketPolicy, resourceARN, ctx) {
			return NewAuthError("TagResource", principal, "not authorized to tag resource")
		}
		return nil
	})

	if err != nil {
		if errors.Is(err, filer_pb.ErrNotFound) {
			errorCode := ErrCodeNoSuchBucket
			if rType == ResourceTypeTable {
				errorCode = ErrCodeNoSuchTable
			}
			h.writeError(w, http.StatusNotFound, errorCode, "resource not found")
		} else if isAuthError(err) {
			h.writeError(w, http.StatusForbidden, ErrCodeAccessDenied, err.Error())
		} else {
			h.writeError(w, http.StatusInternalServerError, ErrCodeInternalError, fmt.Sprintf("failed to read existing tags: %v", err))
		}
		return err
	}

	// Merge new tags
	for k, v := range req.Tags {
		existingTags[k] = v
	}

	// Write merged tags
	tagsBytes, err := json.Marshal(existingTags)
	if err != nil {
		h.writeError(w, http.StatusInternalServerError, ErrCodeInternalError, "failed to marshal tags")
		return fmt.Errorf("failed to marshal tags: %w", err)
	}
	err = filerClient.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
		return h.setExtendedAttribute(r.Context(), client, resourcePath, extendedKey, tagsBytes)
	})

	if err != nil {
		h.writeError(w, http.StatusInternalServerError, ErrCodeInternalError, "failed to tag resource")
		return err
	}

	h.writeJSON(w, http.StatusOK, nil)
	return nil
}

// handleListTagsForResource lists tags for a resource
func (h *S3TablesHandler) handleListTagsForResource(w http.ResponseWriter, r *http.Request, filerClient FilerClient) error {

	var req ListTagsForResourceRequest
	if err := h.readRequestBody(r, &req); err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	if req.ResourceARN == "" {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, "resourceArn is required")
		return fmt.Errorf("resourceArn is required")
	}

	resourcePath, extendedKey, rType, err := h.resolveResourcePath(req.ResourceARN)
	if err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	tags := make(map[string]string)
	var bucketPolicy, tablePolicy string
	var bucketTags map[string]string
	var tableNamespace, tableName string
	err = filerClient.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
		// Read metadata for ownership check
		data, err := h.getExtendedAttribute(r.Context(), client, resourcePath, ExtendedKeyMetadata)
		if err != nil {
			if errors.Is(err, filer_pb.ErrNotFound) || errors.Is(err, ErrAttributeNotFound) {
				return h.absentTagTargetError(r, client, "ListTagsForResource", "not authorized to list tags for resource", req.ResourceARN, rType)
			}
			return err
		}

		ownerAccountID, bucketName, err := h.extractResourceOwnerAndBucket(data, resourcePath, rType)
		if err != nil {
			return err
		}

		// Fetch bucket policy if we have a bucket name
		if bucketName != "" {
			bucketPath := GetTableBucketPath(bucketName)
			if bucketPolicy, err = h.readPolicy(r, client, bucketPath); err != nil {
				return err
			}
			bucketTags, err = h.readTags(r.Context(), client, bucketPath)
			if err != nil {
				return err
			}
		}

		if rType == ResourceTypeTable {
			if _, tableNamespace, tableName, err = parseTableFromARN(req.ResourceARN); err != nil {
				return err
			}
			if tablePolicy, err = h.readPolicy(r, client, resourcePath); err != nil {
				return err
			}
		}

		data, err = h.getExtendedAttribute(r.Context(), client, resourcePath, extendedKey)
		if err != nil {
			if !errors.Is(err, ErrAttributeNotFound) {
				return err
			}
		} else if err := json.Unmarshal(data, &tags); err != nil {
			return err
		}

		var resourceARN string
		if rType == ResourceTypeTable {
			resourceARN = h.generateTableARN(ownerAccountID, bucketName, tableNamespace+"/"+tableName)
		} else {
			resourceARN = h.generateTableBucketARN(ownerAccountID, bucketName)
		}
		principal := h.getAccountID(r)
		identityActions := getIdentityActions(r)
		ctx := &PolicyContext{
			TrustedIssuers:   h.trustedIssuers(r),
			IsLocalAccountID: h.localAccountIDs,
			TableBucketName:  bucketName,
			Namespace:        tableNamespace,
			TableName:        tableName,
			TableBucketTags:  bucketTags,
			ResourceTags:     tags,
			IdentityActions:  identityActions,
			DefaultAllow:     h.defaultAllowFor(r),
		}
		if deniedByPolicy("ListTagsForResource", principal, tablePolicy, resourceARN, ctx) ||
			!CheckPermissionWithContext("ListTagsForResource", principal, ownerAccountID, bucketPolicy, resourceARN, ctx) {
			return NewAuthError("ListTagsForResource", principal, "not authorized to list tags for resource")
		}
		return nil
	})

	if err != nil {
		if errors.Is(err, filer_pb.ErrNotFound) {
			errorCode := ErrCodeNoSuchBucket
			if rType == ResourceTypeTable {
				errorCode = ErrCodeNoSuchTable
			}
			h.writeError(w, http.StatusNotFound, errorCode, "resource not found")
		} else if isAuthError(err) {
			h.writeError(w, http.StatusForbidden, ErrCodeAccessDenied, err.Error())
		} else {
			h.writeError(w, http.StatusInternalServerError, ErrCodeInternalError, fmt.Sprintf("failed to list tags: %v", err))
		}
		return err
	}

	resp := &ListTagsForResourceResponse{
		Tags: tags,
	}

	h.writeJSON(w, http.StatusOK, resp)
	return nil
}

// handleUntagResource removes tags from a resource
func (h *S3TablesHandler) handleUntagResource(w http.ResponseWriter, r *http.Request, filerClient FilerClient) error {
	var req UntagResourceRequest
	if err := h.readRequestBody(r, &req); err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	if req.ResourceARN == "" {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, "resourceArn is required")
		return fmt.Errorf("resourceArn is required")
	}

	if len(req.TagKeys) == 0 {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, "tagKeys are required")
		return fmt.Errorf("tagKeys are required")
	}

	resourcePath, extendedKey, rType, err := h.resolveResourcePath(req.ResourceARN)
	if err != nil {
		h.writeError(w, http.StatusBadRequest, ErrCodeInvalidRequest, err.Error())
		return err
	}

	// Read existing tags, check permission
	tags := make(map[string]string)
	var bucketPolicy, tablePolicy string
	var bucketTags map[string]string
	var tableNamespace, tableName string
	err = filerClient.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
		// Read metadata for ownership check
		data, err := h.getExtendedAttribute(r.Context(), client, resourcePath, ExtendedKeyMetadata)
		if err != nil {
			if errors.Is(err, filer_pb.ErrNotFound) || errors.Is(err, ErrAttributeNotFound) {
				return h.absentTagTargetError(r, client, "UntagResource", "not authorized to untag resource", req.ResourceARN, rType)
			}
			return err
		}

		ownerAccountID, bucketName, err := h.extractResourceOwnerAndBucket(data, resourcePath, rType)
		if err != nil {
			return err
		}

		// Fetch bucket policy if we have a bucket name
		if bucketName != "" {
			bucketPath := GetTableBucketPath(bucketName)
			if bucketPolicy, err = h.readPolicy(r, client, bucketPath); err != nil {
				return err
			}
			bucketTags, err = h.readTags(r.Context(), client, bucketPath)
			if err != nil {
				return err
			}
		}

		if rType == ResourceTypeTable {
			if _, tableNamespace, tableName, err = parseTableFromARN(req.ResourceARN); err != nil {
				return err
			}
			if tablePolicy, err = h.readPolicy(r, client, resourcePath); err != nil {
				return err
			}
		}

		data, err = h.getExtendedAttribute(r.Context(), client, resourcePath, extendedKey)
		if err != nil {
			if !errors.Is(err, ErrAttributeNotFound) {
				return err
			}
		} else if err := json.Unmarshal(data, &tags); err != nil {
			return err
		}

		var resourceARN string
		if rType == ResourceTypeTable {
			resourceARN = h.generateTableARN(ownerAccountID, bucketName, tableNamespace+"/"+tableName)
		} else {
			resourceARN = h.generateTableBucketARN(ownerAccountID, bucketName)
		}
		principal := h.getAccountID(r)
		identityActions := getIdentityActions(r)
		ctx := &PolicyContext{
			TrustedIssuers:   h.trustedIssuers(r),
			IsLocalAccountID: h.localAccountIDs,
			TableBucketName:  bucketName,
			Namespace:        tableNamespace,
			TableName:        tableName,
			TableBucketTags:  bucketTags,
			TagKeys:          req.TagKeys,
			ResourceTags:     tags,
			IdentityActions:  identityActions,
			DefaultAllow:     h.defaultAllowFor(r),
		}
		if deniedByPolicy("UntagResource", principal, tablePolicy, resourceARN, ctx) ||
			!CheckPermissionWithContext("UntagResource", principal, ownerAccountID, bucketPolicy, resourceARN, ctx) {
			return NewAuthError("UntagResource", principal, "not authorized to untag resource")
		}
		return nil
	})

	if err != nil {
		if errors.Is(err, filer_pb.ErrNotFound) {
			errorCode := ErrCodeNoSuchBucket
			if rType == ResourceTypeTable {
				errorCode = ErrCodeNoSuchTable
			}
			h.writeError(w, http.StatusNotFound, errorCode, "resource not found")
		} else if isAuthError(err) {
			h.writeError(w, http.StatusForbidden, ErrCodeAccessDenied, err.Error())
		} else {
			h.writeError(w, http.StatusInternalServerError, ErrCodeInternalError, "failed to read existing tags")
		}
		return err
	}

	// Remove specified tags
	for _, key := range req.TagKeys {
		delete(tags, key)
	}

	// Write updated tags
	tagsBytes, err := json.Marshal(tags)
	if err != nil {
		h.writeError(w, http.StatusInternalServerError, ErrCodeInternalError, "failed to marshal tags")
		return fmt.Errorf("failed to marshal tags: %w", err)
	}
	err = filerClient.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
		return h.setExtendedAttribute(r.Context(), client, resourcePath, extendedKey, tagsBytes)
	})

	if err != nil {
		h.writeError(w, http.StatusInternalServerError, ErrCodeInternalError, "failed to untag resource")
		return err
	}

	h.writeJSON(w, http.StatusOK, nil)
	return nil
}

// absentTagTargetError resolves a tag operation when the resource's catalog
// metadata did not load: a caller the operation would refuse gets its denial,
// everyone else the same not-found an absent name gets.
func (h *S3TablesHandler) absentTagTargetError(r *http.Request, client filer_pb.SeaweedFilerClient, operation, deniedMessage, resourceARN string, rType ResourceType) error {
	var bucketName, namespace, name string
	if rType == ResourceTypeTable {
		bucketName, namespace, name, _ = parseTableFromARN(resourceARN)
	} else {
		bucketName, _ = parseBucketNameFromARN(resourceARN)
	}
	if !h.authorizeAbsentTarget(r, &singleClient{client}, operation, bucketName, namespace, name, resourceARN) {
		return NewAuthError(operation, h.getAccountID(r), deniedMessage)
	}
	return filer_pb.ErrNotFound
}

// resolveResourcePath determines the resource path and extended attribute key from a resource ARN
func (h *S3TablesHandler) resolveResourcePath(resourceARN string) (path string, key string, rType ResourceType, err error) {
	// Try parsing as table ARN first
	bucketName, namespace, tableName, err := parseTableFromARN(resourceARN)
	if err == nil {
		return GetTablePath(bucketName, namespace, tableName), ExtendedKeyTags, ResourceTypeTable, nil
	}

	// Try parsing as bucket ARN
	bucketName, err = parseBucketNameFromARN(resourceARN)
	if err == nil {
		return GetTableBucketPath(bucketName), ExtendedKeyTags, ResourceTypeBucket, nil
	}

	return "", "", "", fmt.Errorf("invalid resource ARN: %s", resourceARN)
}