func initClients() error {
// Administrator
if err := crypto.RegisterClient("jim", nil, "jim", "6avZQLwcUe9b"); err != nil {
return err
}
var err error
administrator, err = crypto.InitClient("jim", nil)
if err != nil {
return err
}
// Alice
if err := crypto.RegisterClient("lukas", nil, "lukas", "NPKYL39uKbkj"); err != nil {
return err
}
alice, err = crypto.InitClient("lukas", nil)
if err != nil {
return err
}
// Bob
if err := crypto.RegisterClient("diego", nil, "diego", "DRJ23pEQl16a"); err != nil {
return err
}
bob, err = crypto.InitClient("diego", nil)
if err != nil {
return err
}
return nil
}
// Deploy deploys the supplied chaincode image to the validators through a transaction
func (d *Devops) Deploy(ctx context.Context, spec *pb.ChaincodeSpec) (*pb.ChaincodeDeploymentSpec, error) {
// get the deployment spec
chaincodeDeploymentSpec, err := d.getChaincodeBytes(ctx, spec)
if err != nil {
devopsLogger.Error(fmt.Sprintf("Error deploying chaincode spec: %v\n\n error: %s", spec, err))
return nil, err
}
// Now create the Transactions message and send to Peer.
transID := chaincodeDeploymentSpec.ChaincodeSpec.ChaincodeID.Name
var tx *pb.Transaction
var sec crypto.Client
if viper.GetBool("security.enabled") {
if devopsLogger.IsEnabledFor(logging.DEBUG) {
devopsLogger.Debug("Initializing secure devops using context %s", spec.SecureContext)
}
sec, err = crypto.InitClient(spec.SecureContext, nil)
defer crypto.CloseClient(sec)
// remove the security context since we are no longer need it down stream
spec.SecureContext = ""
if nil != err {
return nil, err
}
if devopsLogger.IsEnabledFor(logging.DEBUG) {
devopsLogger.Debug("Creating secure transaction %s", transID)
}
tx, err = sec.NewChaincodeDeployTransaction(chaincodeDeploymentSpec, transID)
if nil != err {
return nil, err
}
} else {
if devopsLogger.IsEnabledFor(logging.DEBUG) {
devopsLogger.Debug("Creating deployment transaction (%s)", transID)
}
tx, err = pb.NewChaincodeDeployTransaction(chaincodeDeploymentSpec, transID)
if err != nil {
return nil, fmt.Errorf("Error deploying chaincode: %s ", err)
}
}
if devopsLogger.IsEnabledFor(logging.DEBUG) {
devopsLogger.Debug("Sending deploy transaction (%s) to validator", tx.Uuid)
}
resp := d.coord.ExecuteTransaction(tx)
if resp.Status == pb.Response_FAILURE {
err = fmt.Errorf(string(resp.Msg))
}
return chaincodeDeploymentSpec, err
}
func (d *Devops) invokeOrQuery(ctx context.Context, chaincodeInvocationSpec *pb.ChaincodeInvocationSpec, invoke bool) (*pb.Response, error) {
if chaincodeInvocationSpec.ChaincodeSpec.ChaincodeID.Name == "" {
return nil, fmt.Errorf("name not given for invoke/query")
}
// Now create the Transactions message and send to Peer.
uuid, uuidErr := util.GenerateUUID()
if uuidErr != nil {
devopsLogger.Error(fmt.Sprintf("Error generating UUID: %s", uuidErr))
return nil, uuidErr
}
var transaction *pb.Transaction
var err error
var sec crypto.Client
if viper.GetBool("security.enabled") {
if devopsLogger.IsEnabledFor(logging.DEBUG) {
devopsLogger.Debug("Initializing secure devops using context %s", chaincodeInvocationSpec.ChaincodeSpec.SecureContext)
}
sec, err = crypto.InitClient(chaincodeInvocationSpec.ChaincodeSpec.SecureContext, nil)
defer crypto.CloseClient(sec)
// remove the security context since we are no longer need it down stream
chaincodeInvocationSpec.ChaincodeSpec.SecureContext = ""
if nil != err {
return nil, err
}
}
transaction, err = d.createExecTx(chaincodeInvocationSpec, uuid, invoke, sec)
if err != nil {
return nil, err
}
if devopsLogger.IsEnabledFor(logging.DEBUG) {
devopsLogger.Debug("Sending invocation transaction (%s) to validator", transaction.Uuid)
}
resp := d.coord.ExecuteTransaction(transaction)
if resp.Status == pb.Response_FAILURE {
err = fmt.Errorf(string(resp.Msg))
} else {
if !invoke && nil != sec && viper.GetBool("security.privacy") {
if resp.Msg, err = sec.DecryptQueryResult(transaction, resp.Msg); nil != err {
devopsLogger.Debug("Failed decrypting query transaction result %s", string(resp.Msg[:]))
//resp = &pb.Response{Status: pb.Response_FAILURE, Msg: []byte(err.Error())}
}
}
}
return resp, err
}
func (d *Devops) createExecTx(spec *pb.ChaincodeInvocationSpec, uuid string, invokeTx bool) (*pb.Transaction, error) {
var tx *pb.Transaction
var err error
if viper.GetBool("security.enabled") {
if devopsLogger.IsEnabledFor(logging.DEBUG) {
devopsLogger.Debug("Initializing secure devops using context %s", spec.ChaincodeSpec.SecureContext)
}
sec, err := crypto.InitClient(spec.ChaincodeSpec.SecureContext, nil)
defer crypto.CloseClient(sec)
// remove the security context since we are no longer need it down stream
spec.ChaincodeSpec.SecureContext = ""
if nil != err {
return nil, err
}
if devopsLogger.IsEnabledFor(logging.DEBUG) {
devopsLogger.Debug("Creating secure invocation transaction %s", uuid)
}
if invokeTx {
tx, err = sec.NewChaincodeExecute(spec, uuid)
} else {
tx, err = sec.NewChaincodeQuery(spec, uuid)
}
if nil != err {
return nil, err
}
} else {
if devopsLogger.IsEnabledFor(logging.DEBUG) {
devopsLogger.Debug("Creating invocation transaction (%s)", uuid)
}
var t pb.Transaction_Type
if invokeTx {
t = pb.Transaction_CHAINCODE_EXECUTE
} else {
t = pb.Transaction_CHAINCODE_QUERY
}
tx, err = pb.NewChaincodeExecute(spec, uuid, t)
if nil != err {
return nil, err
}
}
return tx, nil
}
// GetEnrollmentCert retrieves the enrollment certificate for a given user.
func (s *ServerOpenchainREST) GetEnrollmentCert(rw web.ResponseWriter, req *web.Request) {
// Parse out the user enrollment ID
enrollmentID := req.PathParams["id"]
if restLogger.IsEnabledFor(logging.DEBUG) {
restLogger.Debug("REST received enrollment certificate retrieval request for registrationID '%s'", enrollmentID)
}
// If security is enabled, initialize the crypto client
if viper.GetBool("security.enabled") {
if restLogger.IsEnabledFor(logging.DEBUG) {
restLogger.Debug("Initializing secure client using context '%s'", enrollmentID)
}
// Initialize the security client
sec, err := crypto.InitClient(enrollmentID, nil)
if err != nil {
rw.WriteHeader(http.StatusBadRequest)
fmt.Fprintf(rw, "{\"Error\": \"%s\"}", err)
restLogger.Error(fmt.Sprintf("{\"Error\": \"%s\"}", err))
return
}
// Obtain the client CertificateHandler
handler, err := sec.GetEnrollmentCertificateHandler()
if err != nil {
rw.WriteHeader(http.StatusInternalServerError)
fmt.Fprintf(rw, "{\"Error\": \"%s\"}", err)
restLogger.Error(fmt.Sprintf("{\"Error\": \"%s\"}", err))
return
}
// Certificate handler can not be hil
if handler == nil {
rw.WriteHeader(http.StatusInternalServerError)
fmt.Fprintf(rw, "{\"Error\": \"Error retrieving certificate handler.\"}")
restLogger.Error("{\"Error\": \"Error retrieving certificate handler.\"}")
return
}
// Obtain the DER encoded certificate
certDER := handler.GetCertificate()
// Confirm the retrieved enrollment certificate is not nil
if certDER == nil {
rw.WriteHeader(http.StatusInternalServerError)
fmt.Fprintf(rw, "{\"Error\": \"Enrollment certificate is nil.\"}")
restLogger.Error("{\"Error\": \"Enrollment certificate is nil.\"}")
return
}
// Confirm the retrieved enrollment certificate has non-zero length
if len(certDER) == 0 {
rw.WriteHeader(http.StatusInternalServerError)
fmt.Fprintf(rw, "{\"Error\": \"Enrollment certificate length is 0.\"}")
restLogger.Error("{\"Error\": \"Enrollment certificate length is 0.\"}")
return
}
// Transforms the DER encoded certificate to a PEM encoded certificate
certPEM := utils.DERCertToPEM(certDER)
// As the enrollment certifiacate contains \n characters, url encode it before outputting
urlEncodedCert := url.QueryEscape(string(certPEM))
// Close the security client
crypto.CloseClient(sec)
rw.WriteHeader(http.StatusOK)
fmt.Fprintf(rw, "{\"OK\": \"%s\"}", urlEncodedCert)
if restLogger.IsEnabledFor(logging.DEBUG) {
restLogger.Debug("Sucessfully retrieved enrollment certificate for secure context '%s'", enrollmentID)
}
} else {
// Security must be enabled to request enrollment certificates
rw.WriteHeader(http.StatusBadRequest)
fmt.Fprintf(rw, "{\"Error\": \"Security functionality must be enabled before requesting client certificates.\"}")
restLogger.Error("{\"Error\": \"Security functionality must be enabled before requesting client certificates.\"}")
return
}
}