From 04aa7874b2582ec8a758bf890a02e5d1635aa3df Mon Sep 17 00:00:00 2001 From: aarifullin Date: Thu, 11 Apr 2024 18:10:33 +0300 Subject: [PATCH] [#1090] tree: Make workaround for APE checks * Make `verifyClient` method perform APE check if a container was created with zero-filled basic ACL. * Object verbs are used in APE, until tree verbs are introduced. Signed-off-by: Airat Arifullin --- cmd/frostfs-node/tree.go | 4 +- pkg/services/tree/ape.go | 69 ++++++++++++++++++++++++++++++++++ pkg/services/tree/options.go | 9 +++++ pkg/services/tree/signature.go | 13 ++++--- 4 files changed, 89 insertions(+), 6 deletions(-) create mode 100644 pkg/services/tree/ape.go diff --git a/cmd/frostfs-node/tree.go b/cmd/frostfs-node/tree.go index dced05bc..ff00b6fa 100644 --- a/cmd/frostfs-node/tree.go +++ b/cmd/frostfs-node/tree.go @@ -63,7 +63,9 @@ func initTreeService(c *cfg) { tree.WithReplicationChannelCapacity(treeConfig.ReplicationChannelCapacity()), tree.WithReplicationWorkerCount(treeConfig.ReplicationWorkerCount()), tree.WithAuthorizedKeys(treeConfig.AuthorizedKeys()), - tree.WithMetrics(c.metricsCollector.TreeService())) + tree.WithMetrics(c.metricsCollector.TreeService()), + tree.WithAPERouter(c.cfgObject.cfgAccessPolicyEngine.accessPolicyEngine), + ) c.cfgGRPC.performAndSave(func(_ string, _ net.Listener, s *grpc.Server) { tree.RegisterTreeServiceServer(s, c.treeService) diff --git a/pkg/services/tree/ape.go b/pkg/services/tree/ape.go new file mode 100644 index 00000000..52036074 --- /dev/null +++ b/pkg/services/tree/ape.go @@ -0,0 +1,69 @@ +package tree + +import ( + "encoding/hex" + "fmt" + "strings" + + "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/ape/converter" + aperequest "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/ape/request" + core "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/container" + apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status" + cnrSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container" + "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/acl" + cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id" + apechain "git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain" + "git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine" + nativeschema "git.frostfs.info/TrueCloudLab/policy-engine/schema/native" + "github.com/nspcc-dev/neo-go/pkg/crypto/keys" +) + +func (s *Service) checkAPE(container *core.Container, cid cid.ID, operation acl.Op, role acl.Role, publicKey *keys.PublicKey) error { + namespace := "" + cntNamespace, hasNamespace := strings.CutSuffix(cnrSDK.ReadDomain(container.Value).Zone(), ".ns") + if hasNamespace { + namespace = cntNamespace + } + + schemaMethod, err := converter.SchemaMethodFromACLOperation(operation) + if err != nil { + return apeErr(err) + } + schemaRole, err := converter.SchemaRoleFromACLRole(role) + if err != nil { + return apeErr(err) + } + reqProps := map[string]string{ + nativeschema.PropertyKeyActorPublicKey: hex.EncodeToString(publicKey.Bytes()), + nativeschema.PropertyKeyActorRole: schemaRole, + } + + var resourceName string + if namespace == "root" || namespace == "" { + resourceName = fmt.Sprintf(nativeschema.ResourceFormatRootContainerObjects, cid.EncodeToString()) + } else { + resourceName = fmt.Sprintf(nativeschema.ResourceFormatNamespaceContainerObjects, namespace, cid.EncodeToString()) + } + + request := aperequest.NewRequest( + schemaMethod, + aperequest.NewResource(resourceName, make(map[string]string)), + reqProps, + ) + + status, found, err := s.router.IsAllowed(apechain.Ingress, engine.NewRequestTarget(namespace, cid.EncodeToString()), request) + if err != nil { + return apeErr(err) + } + if found && status == apechain.Allow { + return nil + } + err = fmt.Errorf("access to operation %s is denied by access policy engine: %s", schemaMethod, status.String()) + return apeErr(err) +} + +func apeErr(err error) error { + errAccessDenied := &apistatus.ObjectAccessDenied{} + errAccessDenied.WriteReason(err.Error()) + return errAccessDenied +} diff --git a/pkg/services/tree/options.go b/pkg/services/tree/options.go index 043e12cb..0e5f6427 100644 --- a/pkg/services/tree/options.go +++ b/pkg/services/tree/options.go @@ -9,6 +9,7 @@ import ( "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/pilorama" "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger" cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id" + policyengine "git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine" "github.com/nspcc-dev/neo-go/pkg/crypto/keys" ) @@ -38,6 +39,8 @@ type cfg struct { containerCacheSize int authorizedKeys [][]byte + router policyengine.ChainRouter + metrics MetricsRegister } @@ -139,3 +142,9 @@ func WithAuthorizedKeys(keys keys.PublicKeys) Option { } } } + +func WithAPERouter(router policyengine.ChainRouter) Option { + return func(c *cfg) { + c.router = router + } +} diff --git a/pkg/services/tree/signature.go b/pkg/services/tree/signature.go index 985e1ad9..162b189e 100644 --- a/pkg/services/tree/signature.go +++ b/pkg/services/tree/signature.go @@ -71,7 +71,7 @@ func (s *Service) verifyClient(req message, cid cidSDK.ID, rawBearer []byte, op return err } - role, err := roleFromReq(cnr, req, bt) + role, pubKey, err := roleAndPubKeyFromReq(cnr, req, bt) if err != nil { return fmt.Errorf("can't get request role: %w", err) } @@ -79,8 +79,11 @@ func (s *Service) verifyClient(req message, cid cidSDK.ID, rawBearer []byte, op basicACL := cnr.Value.BasicACL() // Basic ACL mask can be unset, if a container operations are performed // with strict APE checks only. + // + // FIXME(@aarifullin): tree service temporiraly performs APE checks on + // object verbs, because tree verbs have not been introduced yet. if basicACL == 0x0 { - return nil + return s.checkAPE(cnr, cid, op, role, pubKey) } if !basicACL.IsOpAllowed(op, role) { @@ -222,7 +225,7 @@ func SignMessage(m message, key *ecdsa.PrivateKey) error { return nil } -func roleFromReq(cnr *core.Container, req message, bt *bearer.Token) (acl.Role, error) { +func roleAndPubKeyFromReq(cnr *core.Container, req message, bt *bearer.Token) (acl.Role, *keys.PublicKey, error) { role := acl.RoleOthers owner := cnr.Value.Owner() @@ -233,7 +236,7 @@ func roleFromReq(cnr *core.Container, req message, bt *bearer.Token) (acl.Role, pub, err := keys.NewPublicKeyFromBytes(rawKey, elliptic.P256()) if err != nil { - return role, fmt.Errorf("invalid public key: %w", err) + return role, nil, fmt.Errorf("invalid public key: %w", err) } var reqSigner user.ID @@ -243,7 +246,7 @@ func roleFromReq(cnr *core.Container, req message, bt *bearer.Token) (acl.Role, role = acl.RoleOwner } - return role, nil + return role, pub, nil } func eACLOp(op acl.Op) eacl.Operation {