package token import ( "crypto/ecdsa" "crypto/elliptic" "errors" "github.com/nspcc-dev/neo-go/pkg/crypto/keys" "github.com/nspcc-dev/neofs-api-go/v2/acl" v2signature "github.com/nspcc-dev/neofs-api-go/v2/signature" "github.com/nspcc-dev/neofs-sdk-go/eacl" "github.com/nspcc-dev/neofs-sdk-go/owner" "github.com/nspcc-dev/neofs-sdk-go/signature" sigutil "github.com/nspcc-dev/neofs-sdk-go/util/signature" ) var ( errNilBearerToken = errors.New("bearer token is not set") errNilBearerTokenBody = errors.New("bearer token body is not set") errNilBearerTokenEACL = errors.New("bearer token ContainerEACL table is not set") ) type BearerToken struct { token acl.BearerToken } // ToV2 converts BearerToken to v2 BearerToken message. // // Nil BearerToken converts to nil. func (b *BearerToken) ToV2() *acl.BearerToken { if b == nil { return nil } return &b.token } func (b *BearerToken) Empty() bool { return b == nil || b.token.GetBody() == nil && b.token.GetSignature() == nil } func (b *BearerToken) SetLifetime(exp, nbf, iat uint64) { body := b.token.GetBody() if body == nil { body = new(acl.BearerTokenBody) } lt := new(acl.TokenLifetime) lt.SetExp(exp) lt.SetNbf(nbf) lt.SetIat(iat) body.SetLifetime(lt) b.token.SetBody(body) } func (b BearerToken) Expiration() uint64 { return b.token.GetBody().GetLifetime().GetExp() } func (b BearerToken) NotBeforeTime() uint64 { return b.token.GetBody().GetLifetime().GetNbf() } func (b BearerToken) IssuedAt() uint64 { return b.token.GetBody().GetLifetime().GetIat() } func (b *BearerToken) SetEACLTable(table *eacl.Table) { body := b.token.GetBody() if body == nil { body = new(acl.BearerTokenBody) } body.SetEACL(table.ToV2()) b.token.SetBody(body) } func (b BearerToken) EACLTable() *eacl.Table { return eacl.NewTableFromV2(b.token.GetBody().GetEACL()) } func (b *BearerToken) SetOwner(id *owner.ID) { body := b.token.GetBody() if body == nil { body = new(acl.BearerTokenBody) } body.SetOwnerID(id.ToV2()) b.token.SetBody(body) } func (b BearerToken) OwnerID() *owner.ID { return owner.NewIDFromV2(b.token.GetBody().GetOwnerID()) } func (b *BearerToken) SignToken(key *ecdsa.PrivateKey) error { err := sanityCheck(b) if err != nil { return err } signWrapper := v2signature.StableMarshalerWrapper{SM: b.token.GetBody()} sig, err := sigutil.SignData(key, signWrapper) if err != nil { return err } b.token.SetSignature(sig.ToV2()) return nil } func (b BearerToken) Signature() *signature.Signature { return signature.NewFromV2(b.token.GetSignature()) } func (b BearerToken) VerifySignature() error { if b.Empty() { return nil } sigV2 := b.token.GetSignature() return sigutil.VerifyData( v2signature.StableMarshalerWrapper{SM: b.token.GetBody()}, signature.NewFromV2(sigV2)) } // Issuer returns owner.ID associated with the key that signed bearer token. // To pass node validation it should be owner of requested container. Returns // nil if token is not signed. func (b *BearerToken) Issuer() *owner.ID { pub, _ := keys.NewPublicKeyFromBytes(b.token.GetSignature().GetKey(), elliptic.P256()) if pub == nil { return nil } return owner.NewIDFromPublicKey((*ecdsa.PublicKey)(pub)) } // NewBearerToken creates and initializes blank BearerToken. // // Defaults: // - signature: nil; // - eacl: nil; // - ownerID: nil; // - exp: 0; // - nbf: 0; // - iat: 0. func NewBearerToken() *BearerToken { b := new(BearerToken) b.token = acl.BearerToken{} b.token.SetBody(new(acl.BearerTokenBody)) return b } // ToV2 converts BearerToken to v2 BearerToken message. func NewBearerTokenFromV2(v2 *acl.BearerToken) *BearerToken { if v2 == nil { v2 = new(acl.BearerToken) } return &BearerToken{ token: *v2, } } // sanityCheck if bearer token is ready to be issued. func sanityCheck(b *BearerToken) error { switch { case b == nil: return errNilBearerToken case b.token.GetBody() == nil: return errNilBearerTokenBody case b.token.GetBody().GetEACL() == nil: return errNilBearerTokenEACL } // consider checking ContainerEACL sanity there, lifetime correctness, etc. return nil } // Marshal marshals BearerToken into a protobuf binary form. // // Buffer is allocated when the argument is empty. // Otherwise, the first buffer is used. func (b *BearerToken) Marshal(bs ...[]byte) ([]byte, error) { var buf []byte if len(bs) > 0 { buf = bs[0] } return b.ToV2().StableMarshal(buf), nil } // Unmarshal unmarshals protobuf binary representation of BearerToken. func (b *BearerToken) Unmarshal(data []byte) error { fV2 := new(acl.BearerToken) if err := fV2.Unmarshal(data); err != nil { return err } *b = *NewBearerTokenFromV2(fV2) return nil } // MarshalJSON encodes BearerToken to protobuf JSON format. func (b *BearerToken) MarshalJSON() ([]byte, error) { return b.ToV2(). MarshalJSON() } // UnmarshalJSON decodes BearerToken from protobuf JSON format. func (b *BearerToken) UnmarshalJSON(data []byte) error { fV2 := new(acl.BearerToken) if err := fV2.UnmarshalJSON(data); err != nil { return err } *b = *NewBearerTokenFromV2(fV2) return nil }