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[#645] client/cache: Check response public key in all client operations

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There is a need to check if public key in the RPC response matches the
public key of the related storage node declared in network map.

Define `ErrWrongPublicKey` error. Implement RPC response handler's
constructor `AssertKeyResponseCallback` which checks public key. Construct
handler and pass it to client's option `WithResponseInfoHandler`.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
This commit is contained in:
Leonard Lyubich 2021-09-28 09:02:02 +03:00 committed by Alex Vanin
parent 78e4a87dca
commit 4661f65975
9 changed files with 88 additions and 10 deletions
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2
go.mod
View file

@ -11,7 +11,7 @@ require (
github.com/multiformats/go-multiaddr v0.4.0
github.com/nspcc-dev/hrw v1.0.9
github.com/nspcc-dev/neo-go v0.97.1
github.com/nspcc-dev/neofs-api-go v1.29.0
github.com/nspcc-dev/neofs-api-go v1.29.1-0.20210929081312-010b1b011827
github.com/nspcc-dev/neofs-sdk-go v0.0.0-20210520210714-9dee13f0d556
github.com/nspcc-dev/tzhash v1.4.0
github.com/panjf2000/ants/v2 v2.4.0

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go.sum
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9
pkg/core/client/errors.go Normal file
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@ -0,0 +1,9 @@
package client
import (
"errors"
)
// ErrWrongPublicKey is returned when the client's response is signed with a key different
// from the one declared in the network map.
var ErrWrongPublicKey = errors.New("public key is different from the key in the network map")

14
pkg/core/client/util.go
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@ -1,8 +1,10 @@
package client
import (
"bytes"
"fmt"
"github.com/nspcc-dev/neofs-api-go/pkg/client"
"github.com/nspcc-dev/neofs-node/pkg/network"
)
@ -40,3 +42,15 @@ func NodeInfoFromNetmapElement(dst *NodeInfo, info interface {
}) {
nodeInfoFromKeyAddr(dst, info.PublicKey(), info.Addresses())
}
// AssertKeyResponseCallback returns client response callback which checks if the response was signed by expected key.
// Returns ErrWrongPublicKey in case of key mismatch.
func AssertKeyResponseCallback(expectedKey []byte) func(client.ResponseMetaInfo) error {
return func(info client.ResponseMetaInfo) error {
if !bytes.Equal(info.ResponderKey(), expectedKey) {
return ErrWrongPublicKey
}
return nil
}
}

4
pkg/network/cache/client.go vendored
View file

@ -62,7 +62,9 @@ func (c *ClientCache) Get(info clientcore.NodeInfo) (client.Client, error) {
return cli, nil
}
cli := newMultiClient(netAddr, c.opts)
cli := newMultiClient(netAddr, append(c.opts,
client.WithResponseInfoHandler(clientcore.AssertKeyResponseCallback(info.PublicKey())),
))
c.clients[cacheKey] = cli

28
pkg/services/object/get/v2/util.go
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@ -23,6 +23,7 @@ import (
"github.com/nspcc-dev/neofs-node/pkg/network"
objectSvc "github.com/nspcc-dev/neofs-node/pkg/services/object"
getsvc "github.com/nspcc-dev/neofs-node/pkg/services/object/get"
"github.com/nspcc-dev/neofs-node/pkg/services/object/internal"
"github.com/nspcc-dev/neofs-node/pkg/services/object/util"
"github.com/nspcc-dev/tzhash/tz"
)
@ -55,7 +56,7 @@ func (s *Service) toPrm(req *objectV2.GetRequest, stream objectSvc.GetObjectStre
if !commonPrm.LocalOnly() {
var onceResign sync.Once
p.SetRequestForwarder(groupAddressRequestForwarder(func(addr network.Address, c client.Client) (*objectSDK.Object, error) {
p.SetRequestForwarder(groupAddressRequestForwarder(func(addr network.Address, c client.Client, pubkey []byte) (*objectSDK.Object, error) {
var err error
// once compose and resign forwarding request
@ -106,6 +107,11 @@ func (s *Service) toPrm(req *objectV2.GetRequest, stream objectSvc.GetObjectStre
return nil, fmt.Errorf("reading the response failed: %w", err)
}
// verify response key
if err = internal.VerifyResponseKeyV2(pubkey, resp); err != nil {
return nil, err
}
// verify response structure
if err := signature.VerifyServiceMessage(resp); err != nil {
return nil, fmt.Errorf("response verification failed: %w", err)
@ -177,7 +183,7 @@ func (s *Service) toRangePrm(req *objectV2.GetRangeRequest, stream objectSvc.Get
if !commonPrm.LocalOnly() {
var onceResign sync.Once
p.SetRequestForwarder(groupAddressRequestForwarder(func(addr network.Address, c client.Client) (*objectSDK.Object, error) {
p.SetRequestForwarder(groupAddressRequestForwarder(func(addr network.Address, c client.Client, pubkey []byte) (*objectSDK.Object, error) {
var err error
// once compose and resign forwarding request
@ -221,6 +227,11 @@ func (s *Service) toRangePrm(req *objectV2.GetRangeRequest, stream objectSvc.Get
return nil, fmt.Errorf("reading the response failed: %w", err)
}
// verify response key
if err = internal.VerifyResponseKeyV2(pubkey, resp); err != nil {
return nil, err
}
// verify response structure
if err := signature.VerifyServiceMessage(resp); err != nil {
return nil, fmt.Errorf("could not verify %T: %w", resp, err)
@ -340,7 +351,7 @@ func (s *Service) toHeadPrm(ctx context.Context, req *objectV2.HeadRequest, resp
if !commonPrm.LocalOnly() {
var onceResign sync.Once
p.SetRequestForwarder(groupAddressRequestForwarder(func(addr network.Address, c client.Client) (*objectSDK.Object, error) {
p.SetRequestForwarder(groupAddressRequestForwarder(func(addr network.Address, c client.Client, pubkey []byte) (*objectSDK.Object, error) {
var err error
// once compose and resign forwarding request
@ -369,6 +380,11 @@ func (s *Service) toHeadPrm(ctx context.Context, req *objectV2.HeadRequest, resp
return nil, fmt.Errorf("sending the request failed: %w", err)
}
// verify response key
if err = internal.VerifyResponseKeyV2(pubkey, resp); err != nil {
return nil, err
}
// verify response structure
if err := signature.VerifyServiceMessage(resp); err != nil {
return nil, fmt.Errorf("response verification failed: %w", err)
@ -508,11 +524,13 @@ func toShortObjectHeader(hdr *object.Object) objectV2.GetHeaderPart {
return sh
}
func groupAddressRequestForwarder(f func(network.Address, client.Client) (*objectSDK.Object, error)) getsvc.RequestForwarder {
func groupAddressRequestForwarder(f func(network.Address, client.Client, []byte) (*objectSDK.Object, error)) getsvc.RequestForwarder {
return func(info client.NodeInfo, c client.Client) (*objectSDK.Object, error) {
var (
firstErr error
res *objectSDK.Object
key = info.PublicKey()
)
info.AddressGroup().IterateAddresses(func(addr network.Address) (stop bool) {
@ -528,7 +546,7 @@ func groupAddressRequestForwarder(f func(network.Address, client.Client) (*objec
// would be nice to log otherwise
}()
res, err = f(addr, c)
res, err = f(addr, c, key)
return
})

19
pkg/services/object/internal/key.go Normal file
View file

@ -0,0 +1,19 @@
package internal
import (
"bytes"
"github.com/nspcc-dev/neofs-api-go/v2/session"
"github.com/nspcc-dev/neofs-node/pkg/core/client"
)
// VerifyResponseKeyV2 checks if response is signed with expected key. Returns client.ErrWrongPublicKey if not.
func VerifyResponseKeyV2(expectedKey []byte, resp interface {
GetVerificationHeader() *session.ResponseVerificationHeader
}) error {
if !bytes.Equal(resp.GetVerificationHeader().GetBodySignature().GetKey(), expectedKey) {
return client.ErrWrongPublicKey
}
return nil
}

8
pkg/services/object/put/v2/streamer.go
View file

@ -11,6 +11,7 @@ import (
"github.com/nspcc-dev/neofs-api-go/v2/signature"
"github.com/nspcc-dev/neofs-node/pkg/core/client"
"github.com/nspcc-dev/neofs-node/pkg/network"
"github.com/nspcc-dev/neofs-node/pkg/services/object/internal"
putsvc "github.com/nspcc-dev/neofs-node/pkg/services/object/put"
"github.com/nspcc-dev/neofs-node/pkg/services/object/util"
)
@ -129,6 +130,8 @@ func (s *streamer) relayRequest(info client.NodeInfo, c client.Client) error {
// open stream
resp := new(object.PutResponse)
key := info.PublicKey()
var firstErr error
info.AddressGroup().IterateAddresses(func(addr network.Address) (stop bool) {
@ -173,6 +176,11 @@ func (s *streamer) relayRequest(info client.NodeInfo, c client.Client) error {
return
}
// verify response key
if err = internal.VerifyResponseKeyV2(key, resp); err != nil {
return
}
// verify response structure
err = signature.VerifyServiceMessage(resp)
if err != nil {

14
pkg/services/object/search/v2/util.go
View file

@ -17,6 +17,7 @@ import (
"github.com/nspcc-dev/neofs-node/pkg/core/client"
"github.com/nspcc-dev/neofs-node/pkg/network"
objectSvc "github.com/nspcc-dev/neofs-node/pkg/services/object"
"github.com/nspcc-dev/neofs-node/pkg/services/object/internal"
searchsvc "github.com/nspcc-dev/neofs-node/pkg/services/object/search"
"github.com/nspcc-dev/neofs-node/pkg/services/object/util"
)
@ -46,7 +47,7 @@ func (s *Service) toPrm(req *objectV2.SearchRequest, stream objectSvc.SearchStre
if !commonPrm.LocalOnly() {
var onceResign sync.Once
p.SetRequestForwarder(groupAddressRequestForwarder(func(addr network.Address, c client.Client) ([]*objectSDK.ID, error) {
p.SetRequestForwarder(groupAddressRequestForwarder(func(addr network.Address, c client.Client, pubkey []byte) ([]*objectSDK.ID, error) {
var err error
// once compose and resign forwarding request
@ -89,6 +90,11 @@ func (s *Service) toPrm(req *objectV2.SearchRequest, stream objectSvc.SearchStre
return nil, fmt.Errorf("reading the response failed: %w", err)
}
// verify response key
if err = internal.VerifyResponseKeyV2(pubkey, resp); err != nil {
return nil, err
}
// verify response structure
if err := signature.VerifyServiceMessage(resp); err != nil {
return nil, fmt.Errorf("could not verify %T: %w", resp, err)
@ -111,11 +117,13 @@ func (s *Service) toPrm(req *objectV2.SearchRequest, stream objectSvc.SearchStre
return p, nil
}
func groupAddressRequestForwarder(f func(network.Address, client.Client) ([]*objectSDK.ID, error)) searchsvc.RequestForwarder {
func groupAddressRequestForwarder(f func(network.Address, client.Client, []byte) ([]*objectSDK.ID, error)) searchsvc.RequestForwarder {
return func(info client.NodeInfo, c client.Client) ([]*objectSDK.ID, error) {
var (
firstErr error
res []*objectSDK.ID
key = info.PublicKey()
)
info.AddressGroup().IterateAddresses(func(addr network.Address) (stop bool) {
@ -131,7 +139,7 @@ func groupAddressRequestForwarder(f func(network.Address, client.Client) ([]*obj
// would be nice to log otherwise
}()
res, err = f(addr, c)
res, err = f(addr, c, key)
return
})