[#89] Add placement policy

Signed-off-by: Denis Kirillov <denis@nspcc.ru>

api/auth/center.go

@@ -26,7 +26,7 @@ var authorizationFieldRegexp = regexp.MustCompile(`AWS4-HMAC-SHA256 Credential=(
 type (
 	// Center is a user authentication interface.
 	Center interface {
-		Authenticate(request *http.Request) (*accessbox.GateData, error)
+		Authenticate(request *http.Request) (*accessbox.Box, error)
 	}
 
 	center struct {
@@ -64,7 +64,7 @@ func New(conns pool.Pool, key *keys.PrivateKey) Center {
 	}
 }
 
-func (c *center) Authenticate(r *http.Request) (*accessbox.GateData, error) {
+func (c *center) Authenticate(r *http.Request) (*accessbox.Box, error) {
 	queryValues := r.URL.Query()
 	if queryValues.Get("X-Amz-Algorithm") == "AWS4-HMAC-SHA256" {
 		return nil, errors.New("pre-signed form of request is not supported")
@@ -98,7 +98,7 @@ func (c *center) Authenticate(r *http.Request) (*accessbox.GateData, error) {
 		return nil, fmt.Errorf("could not parse AccessBox address: %s : %w", accessKeyID, err)
 	}
 
-	tkns, err := c.cli.GetTokens(r.Context(), address)
+	box, err := c.cli.GetBox(r.Context(), address)
 	if err != nil {
 		return nil, err
 	}
@@ -114,7 +114,7 @@ func (c *center) Authenticate(r *http.Request) (*accessbox.GateData, error) {
 		}
 	}
 
-	awsCreds := credentials.NewStaticCredentials(accessKeyID, tkns.AccessKey, "")
+	awsCreds := credentials.NewStaticCredentials(accessKeyID, box.Gate.AccessKey, "")
 	signer := v4.NewSigner(awsCreds)
 	signer.DisableURIPathEscaping = true
 
@@ -128,5 +128,5 @@ func (c *center) Authenticate(r *http.Request) (*accessbox.GateData, error) {
 		return nil, errors.New("failed to pass authentication procedure")
 	}
 
-	return tkns, nil
+	return box, nil
 }

api/handler/put.go

@@ -1,6 +1,8 @@
 package handler
 
 import (
+	"context"
+	"encoding/xml"
 	"fmt"
 	"net/http"
 	"strconv"
@@ -11,6 +13,7 @@ import (
 	"github.com/nspcc-dev/neofs-node/pkg/policy"
 	"github.com/nspcc-dev/neofs-s3-gw/api"
 	"github.com/nspcc-dev/neofs-s3-gw/api/layer"
+	"github.com/nspcc-dev/neofs-s3-gw/creds/accessbox"
 	"go.uber.org/zap"
 )
 
@@ -24,6 +27,11 @@ const (
 	publicBasicRule = 0x0FFFFFFF
 )
 
+type createBucketParams struct {
+	XMLName            xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ CreateBucketConfiguration" json:"-"`
+	LocationConstraint string
+}
+
 func (h *handler) PutObjectHandler(w http.ResponseWriter, r *http.Request) {
 	var (
 		err  error
@@ -90,43 +98,41 @@ func (h *handler) CreateBucketHandler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	if err != nil {
-		h.log.Error("could not parse basic ACL",
+		h.writeError(w, r, "could not parse basic ACL", rid, err)
-			zap.String("request_id", rid),
-			zap.Error(err))
-
-		api.WriteErrorResponse(r.Context(), w, api.Error{
-			Code:           api.GetAPIError(api.ErrBadRequest).Code,
-			Description:    err.Error(),
-			HTTPStatusCode: http.StatusBadRequest,
-		}, r.URL)
 		return
 	}
 
+	createParams, err := parseLocationConstraint(r)
+	if err != nil {
+		h.writeError(w, r, "could not parse body", rid, err)
+		return
+	}
+
+	boxData, err := getBoxData(r.Context())
+	if err != nil {
+		h.writeError(w, r, "could get boxData", rid, err)
+		return
+	}
+
+	if createParams.LocationConstraint != "" {
+		for _, placementPolicy := range boxData.Policies {
+			if placementPolicy.LocationConstraint == createParams.LocationConstraint {
+				p.Policy = placementPolicy.Policy
+				break
+			}
+		}
+	}
+	if p.Policy == nil {
 		p.Policy, err = policy.Parse(defaultPolicy)
 		if err != nil {
-		h.log.Error("could not parse policy",
+			h.writeError(w, r, "could not parse policy", rid, err)
-			zap.String("request_id", rid),
-			zap.Error(err))
-
-		api.WriteErrorResponse(r.Context(), w, api.Error{
-			Code:           api.GetAPIError(api.ErrBadRequest).Code,
-			Description:    err.Error(),
-			HTTPStatusCode: http.StatusBadRequest,
-		}, r.URL)
 			return
 		}
+	}
 
-	cid, err := h.obj.CreateBucket(r.Context(), &p)
+	cid, err := h.obj.CreateBucket(r.Context(), &p, boxData)
 	if err != nil {
-		h.log.Error("could not create bucket",
+		h.writeError(w, r, "could not create bucket", rid, err)
-			zap.String("request_id", rid),
-			zap.Error(err))
-
-		api.WriteErrorResponse(r.Context(), w, api.Error{
-			Code:           api.GetAPIError(api.ErrInternalError).Code,
-			Description:    err.Error(),
-			HTTPStatusCode: http.StatusInternalServerError,
-		}, r.URL)
 		return
 	}
 
@@ -136,6 +142,18 @@ func (h *handler) CreateBucketHandler(w http.ResponseWriter, r *http.Request) {
 	api.WriteSuccessResponseHeadersOnly(w)
 }
 
+func parseLocationConstraint(r *http.Request) (*createBucketParams, error) {
+	if r.ContentLength == 0 {
+		return new(createBucketParams), nil
+	}
+
+	params := new(createBucketParams)
+	if err := xml.NewDecoder(r.Body).Decode(params); err != nil {
+		return nil, err
+	}
+	return params, nil
+}
+
 func parseBasicACL(basicACL string) (uint32, error) {
 	switch basicACL {
 	case basicACLPublic:
@@ -155,3 +173,22 @@ func parseBasicACL(basicACL string) (uint32, error) {
 		return uint32(value), nil
 	}
 }
+
+func (h *handler) writeError(w http.ResponseWriter, r *http.Request, msg, rid string, err error) {
+	h.log.Error(msg, zap.String("request_id", rid), zap.Error(err))
+	api.WriteErrorResponse(r.Context(), w, err, r.URL)
+}
+
+func getBoxData(ctx context.Context) (*accessbox.Box, error) {
+	var boxData *accessbox.Box
+	data, ok := ctx.Value(api.BoxData).(*accessbox.Box)
+	if !ok || data == nil {
+		return nil, fmt.Errorf("couldn't get box data from context")
+	}
+
+	boxData = data
+	if boxData.Gate == nil {
+		boxData.Gate = &accessbox.GateData{}
+	}
+	return boxData, nil
+}

api/layer/container.go

@@ -123,21 +123,14 @@ func (n *layer) containerList(ctx context.Context) ([]*BucketInfo, error) {
 	return list, nil
 }
 
-func (n *layer) createContainer(ctx context.Context, p *CreateBucketParams) (*cid.ID, error) {
+func (n *layer) createContainer(ctx context.Context, p *CreateBucketParams, boxData *accessbox.Box) (*cid.ID, error) {
 	cnr := container.New(
 		container.WithPolicy(p.Policy),
 		container.WithCustomBasicACL(p.ACL),
 		container.WithAttribute(container.AttributeName, p.Name),
 		container.WithAttribute(container.AttributeTimestamp, strconv.FormatInt(time.Now().Unix(), 10)))
 
-	var gateData *accessbox.GateData
+	cnr.SetSessionToken(boxData.Gate.SessionToken)
-	if data, ok := ctx.Value(api.GateData).(*accessbox.GateData); ok && data != nil {
-		gateData = data
-	} else {
-		return nil, fmt.Errorf("couldn't get gate data from context")
-	}
-
-	cnr.SetSessionToken(gateData.SessionToken)
 	cnr.SetOwnerID(n.Owner(ctx))
 
 	cid, err := n.pool.PutContainer(ctx, cnr)
@@ -149,7 +142,7 @@ func (n *layer) createContainer(ctx context.Context, p *CreateBucketParams) (*ci
 		return nil, err
 	}
 
-	if err := n.setContainerEACL(ctx, cid, gateData.GateKey); err != nil {
+	if err := n.setContainerEACL(ctx, cid, boxData.Gate.GateKey); err != nil {
 		return nil, err
 	}
 

api/layer/layer.go

@@ -104,7 +104,7 @@ type (
 
 		ListBuckets(ctx context.Context) ([]*BucketInfo, error)
 		GetBucketInfo(ctx context.Context, name string) (*BucketInfo, error)
-		CreateBucket(ctx context.Context, p *CreateBucketParams) (*cid.ID, error)
+		CreateBucket(ctx context.Context, p *CreateBucketParams, boxData *accessbox.Box) (*cid.ID, error)
 		DeleteBucket(ctx context.Context, p *DeleteBucketParams) error
 
 		GetObject(ctx context.Context, p *GetObjectParams) error
@@ -150,8 +150,8 @@ func NewLayer(log *zap.Logger, conns pool.Pool) Client {
 
 // Owner returns owner id from BearerToken (context) or from client owner.
 func (n *layer) Owner(ctx context.Context) *owner.ID {
-	if data, ok := ctx.Value(api.GateData).(*accessbox.GateData); ok && data != nil {
+	if data, ok := ctx.Value(api.BoxData).(*accessbox.Box); ok && data != nil && data.Gate != nil {
-		return data.BearerToken.Issuer()
+		return data.Gate.BearerToken.Issuer()
 	}
 
 	return n.pool.OwnerID()
@@ -159,8 +159,8 @@ func (n *layer) Owner(ctx context.Context) *owner.ID {
 
 // BearerOpt returns client.WithBearer call option with token from context or with nil token.
 func (n *layer) BearerOpt(ctx context.Context) client.CallOption {
-	if data, ok := ctx.Value(api.GateData).(*accessbox.GateData); ok && data != nil {
+	if data, ok := ctx.Value(api.BoxData).(*accessbox.Box); ok && data != nil && data.Gate != nil {
-		return client.WithBearer(data.BearerToken)
+		return client.WithBearer(data.Gate.BearerToken)
 	}
 
 	return client.WithBearer(nil)
@@ -168,8 +168,8 @@ func (n *layer) BearerOpt(ctx context.Context) client.CallOption {
 
 // SessionOpt returns client.WithSession call option with token from context or with nil token.
 func (n *layer) SessionOpt(ctx context.Context) client.CallOption {
-	if data, ok := ctx.Value(api.GateData).(*accessbox.GateData); ok && data != nil {
+	if data, ok := ctx.Value(api.BoxData).(*accessbox.Box); ok && data != nil && data.Gate != nil {
-		return client.WithSession(data.SessionToken)
+		return client.WithSession(data.Gate.SessionToken)
 	}
 
 	return client.WithSession(nil)
@@ -498,11 +498,11 @@ func (n *layer) DeleteObjects(ctx context.Context, bucket string, objects []stri
 	return errs
 }
 
-func (n *layer) CreateBucket(ctx context.Context, p *CreateBucketParams) (*cid.ID, error) {
+func (n *layer) CreateBucket(ctx context.Context, p *CreateBucketParams, boxData *accessbox.Box) (*cid.ID, error) {
 	_, err := n.GetBucketInfo(ctx, p.Name)
 	if err != nil {
 		if errors.Is(err, ErrBucketNotFound) {
-			return n.createContainer(ctx, p)
+			return n.createContainer(ctx, p, boxData)
 		}
 		return nil, err
 	}

api/user-auth.go

@@ -12,15 +12,15 @@ import (
 // KeyWrapper is wrapper for context keys.
 type KeyWrapper string
 
-// GateData is an ID used to store GateData in a context.
+// BoxData is an ID used to store accessbox.Box in a context.
-var GateData = KeyWrapper("__context_gate_data_key")
+var BoxData = KeyWrapper("__context_box_key")
 
 // AttachUserAuth adds user authentication via center to router using log for logging.
 func AttachUserAuth(router *mux.Router, center auth.Center, log *zap.Logger) {
 	router.Use(func(h http.Handler) http.Handler {
 		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			var ctx context.Context
-			tokens, err := center.Authenticate(r)
+			box, err := center.Authenticate(r)
 			if err != nil {
 				if err == auth.ErrNoAuthorizationHeader {
 					log.Debug("couldn't receive bearer token, using neofs-key")
@@ -31,7 +31,7 @@ func AttachUserAuth(router *mux.Router, center auth.Center, log *zap.Logger) {
 					return
 				}
 			} else {
-				ctx = context.WithValue(r.Context(), GateData, tokens)
+				ctx = context.WithValue(r.Context(), BoxData, box)
 			}
 
 			h.ServeHTTP(w, r.WithContext(ctx))

authmate/authmate.go

@@ -44,6 +44,9 @@ func New(log *zap.Logger, conns pool.Pool) *Agent {
 }
 
 type (
+	// ContainerPolicies contains mapping of aws LocationConstraint to neofs PlacementPolicy.
+	ContainerPolicies map[string]string
+
 	// IssueSecretOptions contains options for passing to Agent.IssueSecret method.
 	IssueSecretOptions struct {
 		ContainerID           *cid.ID
@@ -54,6 +57,7 @@ type (
 		ContextRules          []byte
 		SessionTkn            bool
 		Lifetime              uint64
+		ContainerPolicies     ContainerPolicies
 	}
 
 	// ObtainSecretOptions contains options for passing to Agent.ObtainSecret method.
@@ -121,6 +125,45 @@ func (a *Agent) getCurrentEpoch(ctx context.Context) (uint64, error) {
 	}
 }
 
+func checkPolicy(policyString string) (*netmap.PlacementPolicy, error) {
+	result, err := policy.Parse(policyString)
+	if err == nil {
+		return result, nil
+	}
+
+	result = netmap.NewPlacementPolicy()
+	if err = result.UnmarshalJSON([]byte(policyString)); err == nil {
+		return result, nil
+	}
+
+	return nil, fmt.Errorf("can't parse placement policy")
+}
+
+func preparePolicy(policy ContainerPolicies) ([]*accessbox.AccessBox_ContainerPolicy, error) {
+	if policy == nil {
+		return nil, nil
+	}
+
+	var result []*accessbox.AccessBox_ContainerPolicy
+	for locationConstraint, placementPolicy := range policy {
+		parsedPolicy, err := checkPolicy(placementPolicy)
+		if err != nil {
+			return nil, err
+		}
+		marshaled, err := parsedPolicy.Marshal()
+		if err != nil {
+			return nil, fmt.Errorf("can't marshal placement policy: %w", err)
+		}
+
+		result = append(result, &accessbox.AccessBox_ContainerPolicy{
+			LocationConstraint: locationConstraint,
+			Policy:             marshaled,
+		})
+	}
+
+	return result, nil
+}
+
 // IssueSecret creates an auth token, puts it in the NeoFS network and writes to io.Writer a new secret access key.
 func (a *Agent) IssueSecret(ctx context.Context, w io.Writer, options *IssueSecretOptions) error {
 	var (
@@ -130,6 +173,11 @@ func (a *Agent) IssueSecret(ctx context.Context, w io.Writer, options *IssueSecr
 		lifetime lifetimeOptions
 	)
 
+	policies, err := preparePolicy(options.ContainerPolicies)
+	if err != nil {
+		return err
+	}
+
 	lifetime.Iat, err = a.getCurrentEpoch(ctx)
 	if err != nil {
 		return err
@@ -156,6 +204,8 @@ func (a *Agent) IssueSecret(ctx context.Context, w io.Writer, options *IssueSecr
 		return err
 	}
 
+	box.ContainerPolicy = policies
+
 	oid, err := ownerIDFromNeoFSKey(options.NeoFSKey.PublicKey())
 	if err != nil {
 		return err
@@ -201,14 +251,14 @@ func (a *Agent) ObtainSecret(ctx context.Context, w io.Writer, options *ObtainSe
 		return fmt.Errorf("failed to parse secret address: %w", err)
 	}
 
-	tkns, err := bearerCreds.GetTokens(ctx, address)
+	box, err := bearerCreds.GetBox(ctx, address)
 	if err != nil {
 		return fmt.Errorf("failed to get tokens: %w", err)
 	}
 
 	or := &obtainingResult{
-		BearerToken:     tkns.BearerToken,
+		BearerToken:     box.Gate.BearerToken,
-		SecretAccessKey: tkns.AccessKey,
+		SecretAccessKey: box.Gate.AccessKey,
 	}
 
 	enc := json.NewEncoder(w)

cmd/authmate/main.go

@@ -3,6 +3,7 @@ package main
 import (
 	"context"
 	"crypto/ecdsa"
+	"encoding/json"
 	"fmt"
 	"os"
 	"os/signal"
@@ -45,6 +46,7 @@ var (
 	logDebugEnabledFlag    bool
 	sessionTokenFlag       bool
 	lifetimeFlag           uint64
+	containerPolicies      string
 )
 
 const (
@@ -201,6 +203,12 @@ func issueSecret() *cli.Command {
 				Destination: &lifetimeFlag,
 				Value:       defaultLifetime,
 			},
+			&cli.StringFlag{
+				Name:        "container-policy",
+				Usage:       "mapping AWS storage class to NeoFS storage policy as plain json string or path to json file",
+				Required:    false,
+				Destination: &containerPolicies,
+			},
 		},
 		Action: func(c *cli.Context) error {
 			ctx, log := prepare()
@@ -241,6 +249,11 @@ func issueSecret() *cli.Command {
 				return cli.Exit(fmt.Sprintf("lifetime must be at least 1, current value: %d", lifetimeFlag), 5)
 			}
 
+			policies, err := parsePolicies(containerPolicies)
+			if err != nil {
+				return cli.Exit(fmt.Sprintf("couldn't parse container policy: %s", err.Error()), 6)
+			}
+
 			issueSecretOptions := &authmate.IssueSecretOptions{
 				ContainerID:           containerID,
 				ContainerFriendlyName: containerFriendlyName,
@@ -248,6 +261,7 @@ func issueSecret() *cli.Command {
 				GatesPublicKeys:       gatesPublicKeys,
 				EACLRules:             getJSONRules(eaclRulesFlag),
 				ContextRules:          getJSONRules(contextRulesFlag),
+				ContainerPolicies:     policies,
 				SessionTkn:            sessionTokenFlag,
 				Lifetime:              lifetimeFlag,
 			}
@@ -261,6 +275,23 @@ func issueSecret() *cli.Command {
 	}
 }
 
+func parsePolicies(val string) (authmate.ContainerPolicies, error) {
+	if val == "" {
+		return nil, nil
+	}
+	data, err := os.ReadFile(val)
+	if err != nil {
+		data = []byte(val)
+	}
+
+	var policies authmate.ContainerPolicies
+	if err = json.Unmarshal(data, &policies); err != nil {
+		return nil, err
+	}
+
+	return policies, nil
+}
+
 func getJSONRules(val string) []byte {
 	if data, err := os.ReadFile(val); err == nil {
 		return data

creds/accessbox/accessbox.go

@@ -11,6 +11,7 @@ import (
 	"io"
 
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neofs-api-go/pkg/netmap"
 	"github.com/nspcc-dev/neofs-api-go/pkg/session"
 	"github.com/nspcc-dev/neofs-api-go/pkg/token"
 	"golang.org/x/crypto/chacha20poly1305"
@@ -18,6 +19,18 @@ import (
 	"google.golang.org/protobuf/proto"
 )
 
+// Box represents friendly AccessBox.
+type Box struct {
+	Gate     *GateData
+	Policies []*ContainerPolicy
+}
+
+// ContainerPolicy represents friendly AccessBox_ContainerPolicy.
+type ContainerPolicy struct {
+	LocationConstraint string
+	Policy             *netmap.PlacementPolicy
+}
+
 // GateData represents gate tokens in AccessBox.
 type GateData struct {
 	AccessKey    string
@@ -91,6 +104,42 @@ func (x *AccessBox) GetTokens(owner *keys.PrivateKey) (*GateData, error) {
 	return nil, fmt.Errorf("no gate data for key  %x was found", ownerKey)
 }
 
+// GetPlacementPolicy returns ContainerPolicy from AccessBox.
+func (x *AccessBox) GetPlacementPolicy() ([]*ContainerPolicy, error) {
+	var result []*ContainerPolicy
+	for _, policy := range x.ContainerPolicy {
+		placementPolicy := netmap.NewPlacementPolicy()
+		if err := placementPolicy.Unmarshal(policy.Policy); err != nil {
+			return nil, err
+		}
+
+		result = append(result, &ContainerPolicy{
+			LocationConstraint: policy.LocationConstraint,
+			Policy:             placementPolicy,
+		})
+	}
+
+	return result, nil
+}
+
+// GetBox parse AccessBox to Box.
+func (x *AccessBox) GetBox(owner *keys.PrivateKey) (*Box, error) {
+	tokens, err := x.GetTokens(owner)
+	if err != nil {
+		return nil, err
+	}
+
+	policy, err := x.GetPlacementPolicy()
+	if err != nil {
+		return nil, err
+	}
+
+	return &Box{
+		Gate:     tokens,
+		Policies: policy,
+	}, nil
+}
+
 func (x *AccessBox) addTokens(gatesData []*GateData, ephemeralKey *keys.PrivateKey, secret []byte) error {
 	for i, gate := range gatesData {
 		encBearer, err := gate.BearerToken.Marshal()

creds/accessbox/accessbox.pb.go

@@ -7,10 +7,11 @@
 package accessbox
 
 import (
-	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
-	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
 	sync "sync"
+
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 )
 
 const (
@@ -27,12 +28,13 @@ type AccessBox struct {
 
 	OwnerPublicKey  []byte                       `protobuf:"bytes,1,opt,name=ownerPublicKey,proto3" json:"ownerPublicKey,omitempty"`
 	Gates           []*AccessBox_Gate            `protobuf:"bytes,2,rep,name=gates,proto3" json:"gates,omitempty"`
+	ContainerPolicy []*AccessBox_ContainerPolicy `protobuf:"bytes,3,rep,name=containerPolicy,proto3" json:"containerPolicy,omitempty"`
 }
 
 func (x *AccessBox) Reset() {
 	*x = AccessBox{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_creds_accessbox_accessbox_proto_msgTypes[0]
+		mi := &file_accessbox_proto_msgTypes[0]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -45,7 +47,7 @@ func (x *AccessBox) String() string {
 func (*AccessBox) ProtoMessage() {}
 
 func (x *AccessBox) ProtoReflect() protoreflect.Message {
-	mi := &file_creds_accessbox_accessbox_proto_msgTypes[0]
+	mi := &file_accessbox_proto_msgTypes[0]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -58,7 +60,7 @@ func (x *AccessBox) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use AccessBox.ProtoReflect.Descriptor instead.
 func (*AccessBox) Descriptor() ([]byte, []int) {
-	return file_creds_accessbox_accessbox_proto_rawDescGZIP(), []int{0}
+	return file_accessbox_proto_rawDescGZIP(), []int{0}
 }
 
 func (x *AccessBox) GetOwnerPublicKey() []byte {
@@ -75,6 +77,13 @@ func (x *AccessBox) GetGates() []*AccessBox_Gate {
 	return nil
 }
 
+func (x *AccessBox) GetContainerPolicy() []*AccessBox_ContainerPolicy {
+	if x != nil {
+		return x.ContainerPolicy
+	}
+	return nil
+}
+
 type Tokens struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -88,7 +97,7 @@ type Tokens struct {
 func (x *Tokens) Reset() {
 	*x = Tokens{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_creds_accessbox_accessbox_proto_msgTypes[1]
+		mi := &file_accessbox_proto_msgTypes[1]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -101,7 +110,7 @@ func (x *Tokens) String() string {
 func (*Tokens) ProtoMessage() {}
 
 func (x *Tokens) ProtoReflect() protoreflect.Message {
-	mi := &file_creds_accessbox_accessbox_proto_msgTypes[1]
+	mi := &file_accessbox_proto_msgTypes[1]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -114,7 +123,7 @@ func (x *Tokens) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Tokens.ProtoReflect.Descriptor instead.
 func (*Tokens) Descriptor() ([]byte, []int) {
-	return file_creds_accessbox_accessbox_proto_rawDescGZIP(), []int{1}
+	return file_accessbox_proto_rawDescGZIP(), []int{1}
 }
 
 func (x *Tokens) GetAccessKey() []byte {
@@ -150,7 +159,7 @@ type AccessBox_Gate struct {
 func (x *AccessBox_Gate) Reset() {
 	*x = AccessBox_Gate{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_creds_accessbox_accessbox_proto_msgTypes[2]
+		mi := &file_accessbox_proto_msgTypes[2]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -163,7 +172,7 @@ func (x *AccessBox_Gate) String() string {
 func (*AccessBox_Gate) ProtoMessage() {}
 
 func (x *AccessBox_Gate) ProtoReflect() protoreflect.Message {
-	mi := &file_creds_accessbox_accessbox_proto_msgTypes[2]
+	mi := &file_accessbox_proto_msgTypes[2]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -176,7 +185,7 @@ func (x *AccessBox_Gate) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use AccessBox_Gate.ProtoReflect.Descriptor instead.
 func (*AccessBox_Gate) Descriptor() ([]byte, []int) {
-	return file_creds_accessbox_accessbox_proto_rawDescGZIP(), []int{0, 0}
+	return file_accessbox_proto_rawDescGZIP(), []int{0, 0}
 }
 
 func (x *AccessBox_Gate) GetTokens() []byte {
@@ -193,70 +202,137 @@ func (x *AccessBox_Gate) GetGatePublicKey() []byte {
 	return nil
 }
 
-var File_creds_accessbox_accessbox_proto protoreflect.FileDescriptor
+type AccessBox_ContainerPolicy struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
 
-var file_creds_accessbox_accessbox_proto_rawDesc = []byte{
+	LocationConstraint string `protobuf:"bytes,1,opt,name=locationConstraint,proto3" json:"locationConstraint,omitempty"`
-	0x0a, 0x1f, 0x63, 0x72, 0x65, 0x64, 0x73, 0x2f, 0x61, 0x63, 0x63, 0x65, 0x73, 0x73, 0x62, 0x6f,
+	Policy             []byte `protobuf:"bytes,2,opt,name=policy,proto3" json:"policy,omitempty"`
-	0x78, 0x2f, 0x61, 0x63, 0x63, 0x65, 0x73, 0x73, 0x62, 0x6f, 0x78, 0x2e, 0x70, 0x72, 0x6f, 0x74,
+}
-	0x6f, 0x12, 0x09, 0x61, 0x63, 0x63, 0x65, 0x73, 0x73, 0x62, 0x6f, 0x78, 0x22, 0xaa, 0x01, 0x0a,
+
+func (x *AccessBox_ContainerPolicy) Reset() {
+	*x = AccessBox_ContainerPolicy{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_accessbox_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *AccessBox_ContainerPolicy) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*AccessBox_ContainerPolicy) ProtoMessage() {}
+
+func (x *AccessBox_ContainerPolicy) ProtoReflect() protoreflect.Message {
+	mi := &file_accessbox_proto_msgTypes[3]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use AccessBox_ContainerPolicy.ProtoReflect.Descriptor instead.
+func (*AccessBox_ContainerPolicy) Descriptor() ([]byte, []int) {
+	return file_accessbox_proto_rawDescGZIP(), []int{0, 1}
+}
+
+func (x *AccessBox_ContainerPolicy) GetLocationConstraint() string {
+	if x != nil {
+		return x.LocationConstraint
+	}
+	return ""
+}
+
+func (x *AccessBox_ContainerPolicy) GetPolicy() []byte {
+	if x != nil {
+		return x.Policy
+	}
+	return nil
+}
+
+var File_accessbox_proto protoreflect.FileDescriptor
+
+var file_accessbox_proto_rawDesc = []byte{
+	0x0a, 0x0f, 0x61, 0x63, 0x63, 0x65, 0x73, 0x73, 0x62, 0x6f, 0x78, 0x2e, 0x70, 0x72, 0x6f, 0x74,
+	0x6f, 0x12, 0x09, 0x61, 0x63, 0x63, 0x65, 0x73, 0x73, 0x62, 0x6f, 0x78, 0x22, 0xd5, 0x02, 0x0a,
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+	0x65, 0x6e, 0x42, 0x3b, 0x5a, 0x39, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d,
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+	0x2d, 0x73, 0x33, 0x2d, 0x67, 0x77, 0x2f, 0x63, 0x72, 0x65, 0x64, 0x73, 0x2f, 0x74, 0x6f, 0x6b,
+	0x65, 0x6e, 0x62, 0x6f, 0x78, 0x3b, 0x61, 0x63, 0x63, 0x65, 0x73, 0x73, 0x62, 0x6f, 0x78, 0x62,
+	0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
-	file_creds_accessbox_accessbox_proto_rawDescOnce sync.Once
+	file_accessbox_proto_rawDescOnce sync.Once
-	file_creds_accessbox_accessbox_proto_rawDescData = file_creds_accessbox_accessbox_proto_rawDesc
+	file_accessbox_proto_rawDescData = file_accessbox_proto_rawDesc
 )
 
-func file_creds_accessbox_accessbox_proto_rawDescGZIP() []byte {
+func file_accessbox_proto_rawDescGZIP() []byte {
-	file_creds_accessbox_accessbox_proto_rawDescOnce.Do(func() {
+	file_accessbox_proto_rawDescOnce.Do(func() {
-		file_creds_accessbox_accessbox_proto_rawDescData = protoimpl.X.CompressGZIP(file_creds_accessbox_accessbox_proto_rawDescData)
+		file_accessbox_proto_rawDescData = protoimpl.X.CompressGZIP(file_accessbox_proto_rawDescData)
 	})
-	return file_creds_accessbox_accessbox_proto_rawDescData
+	return file_accessbox_proto_rawDescData
 }
 
-var file_creds_accessbox_accessbox_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
+var file_accessbox_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
-var file_creds_accessbox_accessbox_proto_goTypes = []interface{}{
+var file_accessbox_proto_goTypes = []interface{}{
 	(*AccessBox)(nil),                 // 0: accessbox.AccessBox
 	(*Tokens)(nil),                    // 1: accessbox.Tokens
 	(*AccessBox_Gate)(nil),            // 2: accessbox.AccessBox.Gate
+	(*AccessBox_ContainerPolicy)(nil), // 3: accessbox.AccessBox.ContainerPolicy
 }
-var file_creds_accessbox_accessbox_proto_depIdxs = []int32{
+var file_accessbox_proto_depIdxs = []int32{
 	2, // 0: accessbox.AccessBox.gates:type_name -> accessbox.AccessBox.Gate
-	1, // [1:1] is the sub-list for method output_type
+	3, // 1: accessbox.AccessBox.containerPolicy:type_name -> accessbox.AccessBox.ContainerPolicy
-	1, // [1:1] is the sub-list for method input_type
+	2, // [2:2] is the sub-list for method output_type
-	1, // [1:1] is the sub-list for extension type_name
+	2, // [2:2] is the sub-list for method input_type
-	1, // [1:1] is the sub-list for extension extendee
+	2, // [2:2] is the sub-list for extension type_name
-	0, // [0:1] is the sub-list for field type_name
+	2, // [2:2] is the sub-list for extension extendee
+	0, // [0:2] is the sub-list for field type_name
 }
 
-func init() { file_creds_accessbox_accessbox_proto_init() }
+func init() { file_accessbox_proto_init() }
-func file_creds_accessbox_accessbox_proto_init() {
+func file_accessbox_proto_init() {
-	if File_creds_accessbox_accessbox_proto != nil {
+	if File_accessbox_proto != nil {
 		return
 	}
 	if !protoimpl.UnsafeEnabled {
-		file_creds_accessbox_accessbox_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+		file_accessbox_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*AccessBox); i {
 			case 0:
 				return &v.state
@@ -268,7 +344,7 @@ func file_creds_accessbox_accessbox_proto_init() {
 				return nil
 			}
 		}
-		file_creds_accessbox_accessbox_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+		file_accessbox_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Tokens); i {
 			case 0:
 				return &v.state
@@ -280,7 +356,7 @@ func file_creds_accessbox_accessbox_proto_init() {
 				return nil
 			}
 		}
-		file_creds_accessbox_accessbox_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+		file_accessbox_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*AccessBox_Gate); i {
 			case 0:
 				return &v.state
@@ -292,23 +368,35 @@ func file_creds_accessbox_accessbox_proto_init() {
 				return nil
 			}
 		}
+		file_accessbox_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*AccessBox_ContainerPolicy); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_creds_accessbox_accessbox_proto_rawDesc,
+			RawDescriptor: file_accessbox_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   3,
+			NumMessages:   4,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
-		GoTypes:           file_creds_accessbox_accessbox_proto_goTypes,
+		GoTypes:           file_accessbox_proto_goTypes,
-		DependencyIndexes: file_creds_accessbox_accessbox_proto_depIdxs,
+		DependencyIndexes: file_accessbox_proto_depIdxs,
-		MessageInfos:      file_creds_accessbox_accessbox_proto_msgTypes,
+		MessageInfos:      file_accessbox_proto_msgTypes,
 	}.Build()
-	File_creds_accessbox_accessbox_proto = out.File
+	File_accessbox_proto = out.File
-	file_creds_accessbox_accessbox_proto_rawDesc = nil
+	file_accessbox_proto_rawDesc = nil
-	file_creds_accessbox_accessbox_proto_goTypes = nil
+	file_accessbox_proto_goTypes = nil
-	file_creds_accessbox_accessbox_proto_depIdxs = nil
+	file_accessbox_proto_depIdxs = nil
 }

creds/accessbox/accessbox.proto

@@ -12,8 +12,14 @@ message AccessBox {
         bytes gatePublicKey = 2 [json_name = "gatePublicKey"];
     }
 
+    message ContainerPolicy {
+        string locationConstraint = 1;
+        bytes policy = 2;
+    }
+
     bytes ownerPublicKey = 1 [json_name = "ownerPublicKey"];
     repeated Gate gates = 2 [json_name = "gates"];
+    repeated ContainerPolicy containerPolicy = 3 [json_name = "containerPolicy"];
 }
 
 message Tokens {

creds/tokens/credentials.go

@@ -20,7 +20,7 @@ import (
 type (
 	// Credentials is a bearer token get/put interface.
 	Credentials interface {
-		GetTokens(context.Context, *object.Address) (*accessbox.GateData, error)
+		GetBox(context.Context, *object.Address) (*accessbox.Box, error)
 		Put(context.Context, *cid.ID, *owner.ID, *accessbox.AccessBox, ...*keys.PublicKey) (*object.Address, error)
 	}
 
@@ -68,6 +68,15 @@ func (c *cred) GetTokens(ctx context.Context, address *object.Address) (*accessb
 	return box.GetTokens(c.key)
 }
 
+func (c *cred) GetBox(ctx context.Context, address *object.Address) (*accessbox.Box, error) {
+	box, err := c.getAccessBox(ctx, address)
+	if err != nil {
+		return nil, err
+	}
+
+	return box.GetBox(c.key)
+}
+
 func (c *cred) getAccessBox(ctx context.Context, address *object.Address) (*accessbox.AccessBox, error) {
 	var (
 		box accessbox.AccessBox