s3vectors: put, get and delete vector bucket policies (#12201)

* util: do not bind outbound dials to a loopback -ip.bind

`weed server -ip.bind=127.0.0.1` keeps every listener local, but the
same address became the source of outbound connections, so the filer
dialled its remote mount from 127.0.0.1 and failed with "connect:
invalid argument". A loopback source cannot reach off the host; leave
the source to the OS, as for a wildcard bind.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* s3vectors: put, get and delete vector bucket policies

The AWS S3 Vectors policy operations had no handlers; the policy document
is stored on the shared table bucket, so the handlers delegate to the
catalog's PutTableBucketPolicy, GetTableBucketPolicy and
DeleteTableBucketPolicy and keep its guard.

* s3vectors: treat ICEBERG buckets as absent in policy handlers

GetVectorBucketPolicy/PutVectorBucketPolicy/DeleteVectorBucketPolicy
delegated straight to the table bucket, so a bucket created for ICEBERG
tables — invisible to every other vectors operation — could still have
its policy read and written through the vectors API. Gate all three on
lanceBucket, the same format check DeleteVectorBucket and CreateIndex
already apply.

* test/vectors: cover vector bucket policy put/get/delete

Round-trips a policy document through the new ops and asserts a get on
the deleted policy surfaces NotFoundException, so the boto3 conformance
run exercises the added handlers end to end.

* s3vectors: validate the bucket ARN and policy document

Bucket-level operations now reject an index ARN and an ARN minted for
another service, and PutVectorBucketPolicy refuses a document carrying
s3vectors actions — the evaluator only honors s3tables actions, so such a
rule would be a dead grant.

* s3vectors: validate the bucket ARN on the remaining bucket-level operations

* s3vectors: cover bucket ARN and policy document validation

TestBucketARNs pins the accepted forms and the index/foreign-service
rejections; TestValidatePolicyDocument covers a valid document, a
malformed one, and the dead s3vectors action namespace.

* s3vectors test: use an enforceable action in the bucket policy test

The catalog refuses s3vectors actions in a stored policy, so the put call
rejected the document before the get and delete assertions ran.

---------

Co-authored-by: Ólafur Bjarki Bogason <olafur@genkiinstruments.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

weed/s3api/s3tables/handler_policy.go

@@ -60,6 +60,11 @@ func (h *S3TablesHandler) handlePutTableBucketPolicy(w http.ResponseWriter, r *h
 		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())
@@ -320,6 +325,11 @@ func (h *S3TablesHandler) handlePutTablePolicy(w http.ResponseWriter, r *http.Re
 		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())

weed/s3api/s3tables/permissions.go

@@ -141,6 +141,41 @@ func CheckTableOrBucketPermission(operation, principal, resourceOwner, resourceP
 	return resourceOK || bucketOK
 }
 
+// validatePolicyDocument rejects a policy the evaluator could not honor: one
+// that does not parse, or whose actions live in a namespace that never
+// matches. An s3vectors action stored here would be a dead rule the writer
+// believes is enforced — vector requests authorize their s3tables action.
+func validatePolicyDocument(raw string) error {
+	var doc PolicyDocument
+	if err := json.Unmarshal([]byte(raw), &doc); err != nil {
+		return fmt.Errorf("invalid policy document: %w", err)
+	}
+	for _, stmt := range doc.Statement {
+		for _, action := range statementActions(stmt.Action) {
+			if strings.HasPrefix(action, "s3vectors:") {
+				return fmt.Errorf("action %q is not enforceable in a resource policy", action)
+			}
+		}
+	}
+	return nil
+}
+
+func statementActions(spec interface{}) []string {
+	switch a := spec.(type) {
+	case string:
+		return []string{a}
+	case []interface{}:
+		var actions []string
+		for _, item := range a {
+			if str, ok := item.(string); ok {
+				actions = append(actions, str)
+			}
+		}
+		return actions
+	}
+	return nil
+}
+
 // deniedByPolicy reports whether another applicable resource policy vetoes the
 // request. The admin account is exempt, matching CheckPermissionWithContext.
 func deniedByPolicy(operation, principal, resourcePolicy, resourceARN string, ctx *PolicyContext) bool {

weed/s3api/s3tables/permissions_test.go

@@ -428,3 +428,21 @@ func TestCheckPermissionLegacyPolicyPrincipalShapes(t *testing.T) {
 		t.Error("legacy Allow with array principal must still match the scoped caller")
 	}
 }
+
+func TestValidatePolicyDocument(t *testing.T) {
+	valid := `{"Version":"2012-10-17","Statement":[{"Effect":"Deny","Principal":"*","Action":"s3tables:GetTable","Resource":"*"}]}`
+	if err := validatePolicyDocument(valid); err != nil {
+		t.Fatalf("valid policy rejected: %v", err)
+	}
+	if err := validatePolicyDocument("not-json"); err == nil {
+		t.Fatal("malformed policy should be rejected")
+	}
+	dead := `{"Version":"2012-10-17","Statement":[{"Effect":"Deny","Principal":"*","Action":"s3vectors:PutVectors","Resource":"*"}]}`
+	if err := validatePolicyDocument(dead); err == nil {
+		t.Fatal("s3vectors action should be rejected")
+	}
+	deadList := `{"Version":"2012-10-17","Statement":[{"Effect":"Deny","Principal":"*","Action":["s3tables:*","s3vectors:*"],"Resource":"*"}]}`
+	if err := validatePolicyDocument(deadList); err == nil {
+		t.Fatal("action list containing s3vectors should be rejected")
+	}
+}

weed/s3api/s3vectors/handlers.go

@@ -20,19 +20,22 @@ import (
 )
 
 var handlers = map[string]func(*Server, http.ResponseWriter, *http.Request){
-	"CreateVectorBucket": (*Server).handleCreateVectorBucket,
-	"GetVectorBucket":    (*Server).handleGetVectorBucket,
-	"ListVectorBuckets":  (*Server).handleListVectorBuckets,
-	"DeleteVectorBucket": (*Server).handleDeleteVectorBucket,
-	"CreateIndex":        (*Server).handleCreateIndex,
-	"GetIndex":           (*Server).handleGetIndex,
-	"ListIndexes":        (*Server).handleListIndexes,
-	"DeleteIndex":        (*Server).handleDeleteIndex,
-	"PutVectors":         (*Server).handlePutVectors,
-	"GetVectors":         (*Server).handleGetVectors,
-	"ListVectors":        (*Server).handleListVectors,
-	"DeleteVectors":      (*Server).handleDeleteVectors,
-	"QueryVectors":       (*Server).handleQueryVectors,
+	"CreateVectorBucket":       (*Server).handleCreateVectorBucket,
+	"GetVectorBucket":          (*Server).handleGetVectorBucket,
+	"ListVectorBuckets":        (*Server).handleListVectorBuckets,
+	"DeleteVectorBucket":       (*Server).handleDeleteVectorBucket,
+	"PutVectorBucketPolicy":    (*Server).handlePutVectorBucketPolicy,
+	"GetVectorBucketPolicy":    (*Server).handleGetVectorBucketPolicy,
+	"DeleteVectorBucketPolicy": (*Server).handleDeleteVectorBucketPolicy,
+	"CreateIndex":              (*Server).handleCreateIndex,
+	"GetIndex":                 (*Server).handleGetIndex,
+	"ListIndexes":              (*Server).handleListIndexes,
+	"DeleteIndex":              (*Server).handleDeleteIndex,
+	"PutVectors":               (*Server).handlePutVectors,
+	"GetVectors":               (*Server).handleGetVectors,
+	"ListVectors":              (*Server).handleListVectors,
+	"DeleteVectors":            (*Server).handleDeleteVectors,
+	"QueryVectors":             (*Server).handleQueryVectors,
 }
 
 // lance table ids put indexes under a "vector" namespace inside their bucket.
@@ -79,6 +82,25 @@ func arnParts(v *vectorBucketARNs, name, arn string) error {
 	return nil
 }
 
+// bucketARNs resolves the bucket a bucket-level request names and rejects
+// forms that point at a different resource: an index ARN names a table, and an
+// ARN minted for another service names that service's bucket.
+func bucketARNs(name, arn string) (vectorBucketARNs, error) {
+	var v vectorBucketARNs
+	if err := arnParts(&v, name, arn); err != nil {
+		return v, err
+	}
+	if v.index != "" {
+		return v, fmt.Errorf("vectorBucketArn %q names an index, not a bucket", arn)
+	}
+	if strings.HasPrefix(arn, "arn:") {
+		if p := strings.SplitN(arn, ":", 6); len(p) > 2 && p[2] != "s3vectors" {
+			return v, fmt.Errorf("vectorBucketArn %q is not an s3vectors ARN", arn)
+		}
+	}
+	return v, nil
+}
+
 // resolveIndexARNs fills bucket and index from any combination of plain names,
 // a bucket ARN, and a full index ARN — callers may supply only an indexArn.
 func resolveIndexARNs(bucketName, bucketArn, indexName, indexArn string) (vectorBucketARNs, error) {
@@ -276,13 +298,13 @@ func (s *Server) handleGetVectorBucket(w http.ResponseWriter, r *http.Request) {
 		writeError(w, http.StatusBadRequest, "ValidationException", err.Error())
 		return
 	}
-	var arns vectorBucketARNs
-	if err := arnParts(&arns, req.VectorBucketName, req.VectorBucketArn); err != nil {
+	arns, err := bucketARNs(req.VectorBucketName, req.VectorBucketArn)
+	if err != nil {
 		writeError(w, http.StatusBadRequest, "ValidationException", err.Error())
 		return
 	}
 	var resp map[string]interface{}
-	err := s.catalog(r.Context(), "GetTableBucket",
+	err = s.catalog(r.Context(), "GetTableBucket",
 		&s3tables.GetTableBucketRequest{TableBucketARN: s.s3tablesArn(arns.bucket)}, &resp, r)
 	if err != nil {
 		catalogErr(w, err)
@@ -348,8 +370,8 @@ func (s *Server) handleDeleteVectorBucket(w http.ResponseWriter, r *http.Request
 		writeError(w, http.StatusBadRequest, "ValidationException", err.Error())
 		return
 	}
-	var arns vectorBucketARNs
-	if err := arnParts(&arns, req.VectorBucketName, req.VectorBucketArn); err != nil {
+	arns, err := bucketARNs(req.VectorBucketName, req.VectorBucketArn)
+	if err != nil {
 		writeError(w, http.StatusBadRequest, "ValidationException", err.Error())
 		return
 	}
@@ -360,7 +382,7 @@ func (s *Server) handleDeleteVectorBucket(w http.ResponseWriter, r *http.Request
 		return
 	}
 	var resp map[string]interface{}
-	err := s.catalog(r.Context(), "DeleteTableBucket",
+	err = s.catalog(r.Context(), "DeleteTableBucket",
 		&s3tables.DeleteTableBucketRequest{TableBucketARN: s.s3tablesArn(arns.bucket)}, &resp, r)
 	if err != nil && catalogErrCode(err) == s3tables.ErrCodeBucketNotEmpty {
 		// The implicit index namespace counts as bucket content even when it
@@ -402,6 +424,87 @@ func tableID(bucket, index string) *vector_pb.Table {
 	return &vector_pb.Table{Id: []string{bucket, indexNamespace, index}}
 }
 
+// Vector bucket policies are stored on the shared table bucket, the same
+// resource s3tables' PutTableBucketPolicy guards.
+func (s *Server) handlePutVectorBucketPolicy(w http.ResponseWriter, r *http.Request) {
+	var req PutVectorBucketPolicyRequest
+	if err := readJSON(r, &req); err != nil {
+		writeError(w, http.StatusBadRequest, "ValidationException", err.Error())
+		return
+	}
+	arns, err := bucketARNs(req.VectorBucketName, req.VectorBucketArn)
+	if err != nil {
+		writeError(w, http.StatusBadRequest, "ValidationException", err.Error())
+		return
+	}
+	if err := s.lanceBucket(r.Context(), arns.bucket); err != nil {
+		catalogErr(w, err)
+		return
+	}
+	var resp map[string]interface{}
+	err = s.catalog(r.Context(), "PutTableBucketPolicy", &s3tables.PutTableBucketPolicyRequest{
+		TableBucketARN: s.s3tablesArn(arns.bucket),
+		ResourcePolicy: req.Policy,
+	}, &resp, r)
+	if err != nil {
+		catalogErr(w, err)
+		return
+	}
+	writeJSON(w, http.StatusOK, &PutVectorBucketPolicyResponse{})
+}
+
+func (s *Server) handleGetVectorBucketPolicy(w http.ResponseWriter, r *http.Request) {
+	var req GetVectorBucketPolicyRequest
+	if err := readJSON(r, &req); err != nil {
+		writeError(w, http.StatusBadRequest, "ValidationException", err.Error())
+		return
+	}
+	arns, err := bucketARNs(req.VectorBucketName, req.VectorBucketArn)
+	if err != nil {
+		writeError(w, http.StatusBadRequest, "ValidationException", err.Error())
+		return
+	}
+	if err := s.lanceBucket(r.Context(), arns.bucket); err != nil {
+		catalogErr(w, err)
+		return
+	}
+	var resp s3tables.GetTableBucketPolicyResponse
+	err = s.catalog(r.Context(), "GetTableBucketPolicy", &s3tables.GetTableBucketPolicyRequest{
+		TableBucketARN: s.s3tablesArn(arns.bucket),
+	}, &resp, r)
+	if err != nil {
+		catalogErr(w, err)
+		return
+	}
+	writeJSON(w, http.StatusOK, &GetVectorBucketPolicyResponse{Policy: resp.ResourcePolicy})
+}
+
+func (s *Server) handleDeleteVectorBucketPolicy(w http.ResponseWriter, r *http.Request) {
+	var req DeleteVectorBucketPolicyRequest
+	if err := readJSON(r, &req); err != nil {
+		writeError(w, http.StatusBadRequest, "ValidationException", err.Error())
+		return
+	}
+	arns, err := bucketARNs(req.VectorBucketName, req.VectorBucketArn)
+	if err != nil {
+		writeError(w, http.StatusBadRequest, "ValidationException", err.Error())
+		return
+	}
+	if err := s.lanceBucket(r.Context(), arns.bucket); err != nil {
+		catalogErr(w, err)
+		return
+	}
+	var resp map[string]interface{}
+	err = s.catalog(r.Context(), "DeleteTableBucketPolicy", &s3tables.DeleteTableBucketPolicyRequest{
+		TableBucketARN: s.s3tablesArn(arns.bucket),
+	}, &resp, r)
+	if err != nil {
+		catalogErr(w, err)
+		return
+	}
+	writeJSON(w, http.StatusOK, &DeleteVectorBucketPolicyResponse{})
+}
+
 func (s *Server) handleCreateIndex(w http.ResponseWriter, r *http.Request) {
 	var req CreateIndexRequest
 	if err := readJSON(r, &req); err != nil {
@@ -608,8 +711,8 @@ func (s *Server) handleListIndexes(w http.ResponseWriter, r *http.Request) {
 		writeError(w, http.StatusBadRequest, "ValidationException", err.Error())
 		return
 	}
-	var arns vectorBucketARNs
-	if err := arnParts(&arns, req.VectorBucketName, req.VectorBucketArn); err != nil {
+	arns, err := bucketARNs(req.VectorBucketName, req.VectorBucketArn)
+	if err != nil {
 		writeError(w, http.StatusBadRequest, "ValidationException", err.Error())
 		return
 	}
@@ -621,7 +724,7 @@ func (s *Server) handleListIndexes(w http.ResponseWriter, r *http.Request) {
 		} `json:"tables"`
 		ContinuationToken string `json:"continuationToken"`
 	}
-	err := s.catalog(r.Context(), "ListTables", &s3tables.ListTablesRequest{
+	err = s.catalog(r.Context(), "ListTables", &s3tables.ListTablesRequest{
 		TableBucketARN:    s.s3tablesArn(arns.bucket),
 		Namespace:         []string{indexNamespace},
 		MaxTables:         req.MaxResults,

weed/s3api/s3vectors/handlers_test.go

@@ -202,6 +202,24 @@ func TestArnParts(t *testing.T) {
 	}
 }
 
+func TestBucketARNs(t *testing.T) {
+	if v, err := bucketARNs("plain", ""); err != nil || v.bucket != "plain" {
+		t.Fatalf("plain name: %+v err=%v", v, err)
+	}
+	if v, err := bucketARNs("", "arn:aws:s3vectors:r:a:bucket/mybucket"); err != nil || v.bucket != "mybucket" {
+		t.Fatalf("bucket ARN: %+v err=%v", v, err)
+	}
+	for _, bad := range []string{
+		"arn:aws:s3vectors:r:a:bucket/b/index/i",
+		"arn:aws:s3tables:r:a:bucket/b",
+		"arn:aws:s3:r:a:bucket/b",
+	} {
+		if _, err := bucketARNs("", bad); err == nil {
+			t.Fatalf("ARN %q should be rejected for a bucket operation", bad)
+		}
+	}
+}
+
 func TestResolveIndexARNs(t *testing.T) {
 	arns, err := resolveIndexARNs("", "", "", "arn:aws:s3vectors:r:a:bucket/b/index/i")
 	if err != nil || arns.bucket != "b" || arns.index != "i" {

weed/s3api/s3vectors/types.go

@@ -94,6 +94,30 @@ type DeleteVectorBucketRequest struct {
 
 type DeleteVectorBucketResponse struct{}
 
+type PutVectorBucketPolicyRequest struct {
+	VectorBucketName string `json:"vectorBucketName"`
+	VectorBucketArn  string `json:"vectorBucketArn"`
+	Policy           string `json:"policy"`
+}
+
+type PutVectorBucketPolicyResponse struct{}
+
+type GetVectorBucketPolicyRequest struct {
+	VectorBucketName string `json:"vectorBucketName"`
+	VectorBucketArn  string `json:"vectorBucketArn"`
+}
+
+type GetVectorBucketPolicyResponse struct {
+	Policy string `json:"policy"`
+}
+
+type DeleteVectorBucketPolicyRequest struct {
+	VectorBucketName string `json:"vectorBucketName"`
+	VectorBucketArn  string `json:"vectorBucketArn"`
+}
+
+type DeleteVectorBucketPolicyResponse struct{}
+
 type CreateIndexRequest struct {
 	DataType              string                 `json:"dataType"`
 	Dimension             int32                  `json:"dimension"`