func transferOwnership(owner crypto.Client, ownerCert crypto.CertificateHandler, asset string, newOwnerCert crypto.CertificateHandler) error {
	// Get a transaction handler to be used to submit the execute transaction
	// and bind the chaincode access control logic using the binding

	submittingCertHandler, err := owner.GetTCertificateHandlerNext()
	if err != nil {
		return err
	}
	txHandler, err := submittingCertHandler.GetTransactionHandler()
	if err != nil {
		return err
	}
	binding, err := txHandler.GetBinding()
	if err != nil {
		return err
	}

	chaincodeInput := &pb.ChaincodeInput{Function: "transfer", Args: []string{asset, string(newOwnerCert.GetCertificate())}}
	chaincodeInputRaw, err := proto.Marshal(chaincodeInput)
	if err != nil {
		return err
	}

	// Access control. Owner signs chaincodeInputRaw || binding to confirm his identity
	sigma, err := ownerCert.Sign(append(chaincodeInputRaw, binding...))
	if err != nil {
		return err
	}

	// Prepare spec and submit
	spec := &pb.ChaincodeSpec{
		Type:                 1,
		ChaincodeID:          &pb.ChaincodeID{Name: "mycc"},
		CtorMsg:              chaincodeInput,
		Metadata:             sigma, // Proof of identity
		ConfidentialityLevel: pb.ConfidentialityLevel_PUBLIC,
	}

	var ctx = context.Background()
	chaincodeInvocationSpec := &pb.ChaincodeInvocationSpec{ChaincodeSpec: spec}

	tid := chaincodeInvocationSpec.ChaincodeSpec.ChaincodeID.Name

	// Now create the Transactions message and send to Peer.
	transaction, err := txHandler.NewChaincodeExecute(chaincodeInvocationSpec, tid)
	if err != nil {
		return fmt.Errorf("Error deploying chaincode: %s ", err)
	}

	ledger, err := ledger.GetLedger()
	ledger.BeginTxBatch("1")
	_, err = chaincode.Execute(ctx, chaincode.GetChain(chaincode.DefaultChain), transaction)
	if err != nil {
		return fmt.Errorf("Error deploying chaincode: %s", err)
	}
	ledger.CommitTxBatch("1", []*pb.Transaction{transaction}, nil, nil)

	return err

}
Exemple #2
0
func transferOwnershipInternal(owner crypto.Client, ownerCert crypto.CertificateHandler, asset string, newOwnerCert crypto.CertificateHandler) (resp *pb.Response, err error) {
	// Get a transaction handler to be used to submit the execute transaction
	// and bind the chaincode access control logic using the binding

	submittingCertHandler, err := owner.GetTCertificateHandlerNext()
	if err != nil {
		return nil, err
	}
	txHandler, err := submittingCertHandler.GetTransactionHandler()
	if err != nil {
		return nil, err
	}
	binding, err := txHandler.GetBinding()
	if err != nil {
		return nil, err
	}

	chaincodeInput := &pb.ChaincodeInput{
		Function: "transfer",
		Args:     []string{asset, base64.StdEncoding.EncodeToString(newOwnerCert.GetCertificate())},
	}
	chaincodeInputRaw, err := proto.Marshal(chaincodeInput)
	if err != nil {
		return nil, err
	}

	// Access control. Owner signs chaincodeInputRaw || binding to confirm his identity
	sigma, err := ownerCert.Sign(append(chaincodeInputRaw, binding...))
	if err != nil {
		return nil, err
	}

	// Prepare spec and submit
	spec := &pb.ChaincodeSpec{
		Type:                 1,
		ChaincodeID:          &pb.ChaincodeID{Name: chaincodeName},
		CtorMsg:              chaincodeInput,
		Metadata:             sigma, // Proof of identity
		ConfidentialityLevel: confidentialityLevel,
	}

	chaincodeInvocationSpec := &pb.ChaincodeInvocationSpec{ChaincodeSpec: spec}

	// Now create the Transactions message and send to Peer.
	transaction, err := txHandler.NewChaincodeExecute(chaincodeInvocationSpec, util.GenerateUUID())
	if err != nil {
		return nil, fmt.Errorf("Error deploying chaincode: %s ", err)
	}

	return processTransaction(transaction)

}
Exemple #3
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func read(invoker crypto.Client, invokerCert crypto.CertificateHandler) ([]byte, error) {
	// Get a transaction handler to be used to submit the query transaction
	// and bind the chaincode access control logic using the binding

	submittingCertHandler, err := invoker.GetTCertificateHandlerNext()
	if err != nil {
		return nil, err
	}
	txHandler, err := submittingCertHandler.GetTransactionHandler()
	if err != nil {
		return nil, err
	}
	binding, err := txHandler.GetBinding()
	if err != nil {
		return nil, err
	}

	chaincodeInput := &pb.ChaincodeInput{Args: util.ToChaincodeArgs("read")}
	chaincodeInputRaw, err := proto.Marshal(chaincodeInput)
	if err != nil {
		return nil, err
	}

	// Access control:
	// invokerCert signs invokerCert.GetCertificate() || chaincodeInputRaw || binding to confirm his identity
	sigma, err := invokerCert.Sign(append(invokerCert.GetCertificate(), append(chaincodeInputRaw, binding...)...))
	if err != nil {
		return nil, err
	}

	rbacMetadata := RBACMetadata{invokerCert.GetCertificate(), sigma}
	rbacMetadataRaw, err := asn1.Marshal(rbacMetadata)
	if err != nil {
		return nil, err
	}

	// Prepare spec and submit
	spec := &pb.ChaincodeSpec{
		Type:                 1,
		ChaincodeID:          &pb.ChaincodeID{Name: "mycc"},
		CtorMsg:              chaincodeInput,
		Metadata:             rbacMetadataRaw,
		ConfidentialityLevel: pb.ConfidentialityLevel_PUBLIC,
	}

	var ctx = context.Background()
	chaincodeInvocationSpec := &pb.ChaincodeInvocationSpec{ChaincodeSpec: spec}

	tid := chaincodeInvocationSpec.ChaincodeSpec.ChaincodeID.Name

	// Now create the Transactions message and send to Peer.
	transaction, err := txHandler.NewChaincodeQuery(chaincodeInvocationSpec, tid)
	if err != nil {
		return nil, fmt.Errorf("Error deploying chaincode: %s ", err)
	}

	ledger, err := ledger.GetLedger()
	ledger.BeginTxBatch("1")
	result, _, err := chaincode.Execute(ctx, chaincode.GetChain(chaincode.DefaultChain), transaction)
	if err != nil {
		return nil, fmt.Errorf("Error deploying chaincode: %s", err)
	}
	ledger.CommitTxBatch("1", []*pb.Transaction{transaction}, nil, nil)

	return result, err
}
Exemple #4
0
func addRole(admCert crypto.CertificateHandler, idCert crypto.CertificateHandler, role string) error {
	// Get a transaction handler to be used to submit the execute transaction
	// and bind the chaincode access control logic using the binding
	submittingCertHandler, err := administrator.GetTCertificateHandlerNext()
	if err != nil {
		return err
	}
	txHandler, err := submittingCertHandler.GetTransactionHandler()
	if err != nil {
		return err
	}
	binding, err := txHandler.GetBinding()
	if err != nil {
		return err
	}

	chaincodeInput := &pb.ChaincodeInput{Function: "addRole", Args: []string{string(idCert.GetCertificate()), role}}
	chaincodeInputRaw, err := proto.Marshal(chaincodeInput)
	if err != nil {
		return err
	}

	// Access control:
	// admCert signs admCert.GetCertificate() || chaincodeInputRaw || binding to confirm his identity
	sigma, err := admCert.Sign(append(admCert.GetCertificate(), append(chaincodeInputRaw, binding...)...))
	if err != nil {
		return err
	}

	rbacMetadata := RBACMetadata{admCert.GetCertificate(), sigma}
	rbacMetadataRaw, err := asn1.Marshal(rbacMetadata)
	if err != nil {
		return err
	}

	// Prepare spec and submit
	spec := &pb.ChaincodeSpec{
		Type:                 1,
		ChaincodeID:          &pb.ChaincodeID{Name: "mycc"},
		CtorMsg:              chaincodeInput,
		Metadata:             rbacMetadataRaw, // Proof of identity
		ConfidentialityLevel: pb.ConfidentialityLevel_PUBLIC,
	}

	var ctx = context.Background()
	chaincodeInvocationSpec := &pb.ChaincodeInvocationSpec{ChaincodeSpec: spec}

	tid := chaincodeInvocationSpec.ChaincodeSpec.ChaincodeID.Name

	// Now create the Transactions message and send to Peer.
	transaction, err := txHandler.NewChaincodeExecute(chaincodeInvocationSpec, tid)
	if err != nil {
		return fmt.Errorf("Error deploying chaincode: %s ", err)
	}

	ledger, err := ledger.GetLedger()
	ledger.BeginTxBatch("1")
	_, err = chaincode.Execute(ctx, chaincode.GetChain(chaincode.DefaultChain), transaction)
	if err != nil {
		return fmt.Errorf("Error deploying chaincode: %s", err)
	}
	ledger.CommitTxBatch("1", []*pb.Transaction{transaction}, nil, nil)

	return err
}