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mspimplsetup.go
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mspimplsetup.go
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/*
Copyright IBM Corp. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package msp
import (
"bytes"
"crypto/x509"
"crypto/x509/pkix"
"fmt"
"time"
"github.com/golang/protobuf/proto"
"github.com/hyperledger/fabric/bccsp"
m "github.com/hyperledger/fabric/protos/msp"
errors "github.com/pkg/errors"
)
func (msp *bccspmsp) getCertifiersIdentifier(certRaw []byte) ([]byte, error) {
// 1. check that certificate is registered in msp.rootCerts or msp.intermediateCerts
cert, err := msp.getCertFromPem(certRaw)
if err != nil {
return nil, fmt.Errorf("Failed getting certificate for [%v]: [%s]", certRaw, err)
}
// 2. Sanitize it to ensure like for like comparison
cert, err = msp.sanitizeCert(cert)
if err != nil {
return nil, fmt.Errorf("sanitizeCert failed %s", err)
}
found := false
root := false
// Search among root certificates
for _, v := range msp.rootCerts {
if v.(*identity).cert.Equal(cert) {
found = true
root = true
break
}
}
if !found {
// Search among root intermediate certificates
for _, v := range msp.intermediateCerts {
if v.(*identity).cert.Equal(cert) {
found = true
break
}
}
}
if !found {
// Certificate not valid, reject configuration
return nil, fmt.Errorf("Failed adding OU. Certificate [%v] not in root or intermediate certs.", cert)
}
// 3. get the certification path for it
var certifiersIdentifier []byte
var chain []*x509.Certificate
if root {
chain = []*x509.Certificate{cert}
} else {
chain, err = msp.getValidationChain(cert, true)
if err != nil {
return nil, fmt.Errorf("Failed computing validation chain for [%v]. [%s]", cert, err)
}
}
// 4. compute the hash of the certification path
certifiersIdentifier, err = msp.getCertificationChainIdentifierFromChain(chain)
if err != nil {
return nil, fmt.Errorf("Failed computing Certifiers Identifier for [%v]. [%s]", certRaw, err)
}
return certifiersIdentifier, nil
}
func (msp *bccspmsp) setupCrypto(conf *m.FabricMSPConfig) error {
msp.cryptoConfig = conf.CryptoConfig
if msp.cryptoConfig == nil {
// Move to defaults
msp.cryptoConfig = &m.FabricCryptoConfig{
SignatureHashFamily: bccsp.SHA2,
IdentityIdentifierHashFunction: bccsp.SHA256,
}
mspLogger.Debugf("CryptoConfig was nil. Move to defaults.")
}
if msp.cryptoConfig.SignatureHashFamily == "" {
msp.cryptoConfig.SignatureHashFamily = bccsp.SHA2
mspLogger.Debugf("CryptoConfig.SignatureHashFamily was nil. Move to defaults.")
}
if msp.cryptoConfig.IdentityIdentifierHashFunction == "" {
msp.cryptoConfig.IdentityIdentifierHashFunction = bccsp.SHA256
mspLogger.Debugf("CryptoConfig.IdentityIdentifierHashFunction was nil. Move to defaults.")
}
return nil
}
func (msp *bccspmsp) setupCAs(conf *m.FabricMSPConfig) error {
// make and fill the set of CA certs - we expect them to be there
if len(conf.RootCerts) == 0 {
return errors.New("expected at least one CA certificate")
}
// pre-create the verify options with roots and intermediates.
// This is needed to make certificate sanitation working.
// Recall that sanitization is applied also to root CA and intermediate
// CA certificates. After their sanitization is done, the opts
// will be recreated using the sanitized certs.
msp.opts = &x509.VerifyOptions{Roots: x509.NewCertPool(), Intermediates: x509.NewCertPool()}
for _, v := range conf.RootCerts {
cert, err := msp.getCertFromPem(v)
if err != nil {
return err
}
msp.opts.Roots.AddCert(cert)
}
for _, v := range conf.IntermediateCerts {
cert, err := msp.getCertFromPem(v)
if err != nil {
return err
}
msp.opts.Intermediates.AddCert(cert)
}
// Load root and intermediate CA identities
// Recall that when an identity is created, its certificate gets sanitized
msp.rootCerts = make([]Identity, len(conf.RootCerts))
for i, trustedCert := range conf.RootCerts {
id, _, err := msp.getIdentityFromConf(trustedCert)
if err != nil {
return err
}
msp.rootCerts[i] = id
}
// make and fill the set of intermediate certs (if present)
msp.intermediateCerts = make([]Identity, len(conf.IntermediateCerts))
for i, trustedCert := range conf.IntermediateCerts {
id, _, err := msp.getIdentityFromConf(trustedCert)
if err != nil {
return err
}
msp.intermediateCerts[i] = id
}
// root CA and intermediate CA certificates are sanitized, they can be reimported
msp.opts = &x509.VerifyOptions{Roots: x509.NewCertPool(), Intermediates: x509.NewCertPool()}
for _, id := range msp.rootCerts {
msp.opts.Roots.AddCert(id.(*identity).cert)
}
for _, id := range msp.intermediateCerts {
msp.opts.Intermediates.AddCert(id.(*identity).cert)
}
return nil
}
func (msp *bccspmsp) setupAdmins(conf *m.FabricMSPConfig) error {
// make and fill the set of admin certs (if present)
msp.admins = make([]Identity, len(conf.Admins))
for i, admCert := range conf.Admins {
id, _, err := msp.getIdentityFromConf(admCert)
if err != nil {
return err
}
msp.admins[i] = id
}
return nil
}
func (msp *bccspmsp) setupCRLs(conf *m.FabricMSPConfig) error {
// setup the CRL (if present)
msp.CRL = make([]*pkix.CertificateList, len(conf.RevocationList))
for i, crlbytes := range conf.RevocationList {
crl, err := x509.ParseCRL(crlbytes)
if err != nil {
return errors.Wrap(err, "could not parse RevocationList")
}
// TODO: pre-verify the signature on the CRL and create a map
// of CA certs to respective CRLs so that later upon
// validation we can already look up the CRL given the
// chain of the certificate to be validated
msp.CRL[i] = crl
}
return nil
}
func (msp *bccspmsp) finalizeSetupCAs(config *m.FabricMSPConfig) error {
// ensure that our CAs are properly formed and that they are valid
for _, id := range append(append([]Identity{}, msp.rootCerts...), msp.intermediateCerts...) {
if !isCACert(id.(*identity).cert) {
return errors.Errorf("CA Certificate did not have the Subject Key Identifier extension, (SN: %s)", id.(*identity).cert.SerialNumber)
}
if err := msp.validateCAIdentity(id.(*identity)); err != nil {
return errors.WithMessage(err, fmt.Sprintf("CA Certificate is not valid, (SN: %s)", id.(*identity).cert.SerialNumber))
}
}
// populate certificationTreeInternalNodesMap to mark the internal nodes of the
// certification tree
msp.certificationTreeInternalNodesMap = make(map[string]bool)
for _, id := range append([]Identity{}, msp.intermediateCerts...) {
chain, err := msp.getUniqueValidationChain(id.(*identity).cert, msp.getValidityOptsForCert(id.(*identity).cert))
if err != nil {
return errors.WithMessage(err, fmt.Sprintf("failed getting validation chain, (SN: %s)", id.(*identity).cert.SerialNumber))
}
// Recall chain[0] is id.(*identity).id so it does not count as a parent
for i := 1; i < len(chain); i++ {
msp.certificationTreeInternalNodesMap[string(chain[i].Raw)] = true
}
}
return nil
}
func (msp *bccspmsp) setupNodeOUs(config *m.FabricMSPConfig) error {
if config.FabricNodeOUs != nil {
msp.ouEnforcement = config.FabricNodeOUs.Enable
// ClientOU
msp.clientOU = &OUIdentifier{OrganizationalUnitIdentifier: config.FabricNodeOUs.ClientOUIdentifier.OrganizationalUnitIdentifier}
if len(config.FabricNodeOUs.ClientOUIdentifier.Certificate) != 0 {
certifiersIdentifier, err := msp.getCertifiersIdentifier(config.FabricNodeOUs.ClientOUIdentifier.Certificate)
if err != nil {
return err
}
msp.clientOU.CertifiersIdentifier = certifiersIdentifier
}
// PeerOU
msp.peerOU = &OUIdentifier{OrganizationalUnitIdentifier: config.FabricNodeOUs.PeerOUIdentifier.OrganizationalUnitIdentifier}
if len(config.FabricNodeOUs.PeerOUIdentifier.Certificate) != 0 {
certifiersIdentifier, err := msp.getCertifiersIdentifier(config.FabricNodeOUs.PeerOUIdentifier.Certificate)
if err != nil {
return err
}
msp.peerOU.CertifiersIdentifier = certifiersIdentifier
}
// OrdererOU
msp.ordererOU = &OUIdentifier{OrganizationalUnitIdentifier: config.FabricNodeOUs.OrdererOUIdentifier.OrganizationalUnitIdentifier}
if len(config.FabricNodeOUs.OrdererOUIdentifier.Certificate) != 0 {
certifiersIdentifier, err := msp.getCertifiersIdentifier(config.FabricNodeOUs.OrdererOUIdentifier.Certificate)
if err != nil {
return err
}
msp.ordererOU.CertifiersIdentifier = certifiersIdentifier
}
} else {
msp.ouEnforcement = false
}
return nil
}
func (msp *bccspmsp) setupSigningIdentity(conf *m.FabricMSPConfig) error {
if conf.SigningIdentity != nil {
sid, err := msp.getSigningIdentityFromConf(conf.SigningIdentity)
if err != nil {
return err
}
expirationTime := sid.ExpiresAt()
now := time.Now()
if expirationTime.After(now) {
mspLogger.Debug("Signing identity expires at", expirationTime)
} else if expirationTime.IsZero() {
mspLogger.Debug("Signing identity has no known expiration time")
} else {
return errors.Errorf("signing identity expired %v ago", now.Sub(expirationTime))
}
msp.signer = sid
}
return nil
}
func (msp *bccspmsp) setupOUs(conf *m.FabricMSPConfig) error {
msp.ouIdentifiers = make(map[string][][]byte)
for _, ou := range conf.OrganizationalUnitIdentifiers {
certifiersIdentifier, err := msp.getCertifiersIdentifier(ou.Certificate)
if err != nil {
return errors.WithMessage(err, fmt.Sprintf("failed getting certificate for [%v]", ou))
}
// Check for duplicates
found := false
for _, id := range msp.ouIdentifiers[ou.OrganizationalUnitIdentifier] {
if bytes.Equal(id, certifiersIdentifier) {
mspLogger.Warningf("Duplicate found in ou identifiers [%s, %v]", ou.OrganizationalUnitIdentifier, id)
found = true
break
}
}
if !found {
// No duplicates found, add it
msp.ouIdentifiers[ou.OrganizationalUnitIdentifier] = append(
msp.ouIdentifiers[ou.OrganizationalUnitIdentifier],
certifiersIdentifier,
)
}
}
return nil
}
func (msp *bccspmsp) setupTLSCAs(conf *m.FabricMSPConfig) error {
opts := &x509.VerifyOptions{Roots: x509.NewCertPool(), Intermediates: x509.NewCertPool()}
// Load TLS root and intermediate CA identities
msp.tlsRootCerts = make([][]byte, len(conf.TlsRootCerts))
rootCerts := make([]*x509.Certificate, len(conf.TlsRootCerts))
for i, trustedCert := range conf.TlsRootCerts {
cert, err := msp.getCertFromPem(trustedCert)
if err != nil {
return err
}
rootCerts[i] = cert
msp.tlsRootCerts[i] = trustedCert
opts.Roots.AddCert(cert)
}
// make and fill the set of intermediate certs (if present)
msp.tlsIntermediateCerts = make([][]byte, len(conf.TlsIntermediateCerts))
intermediateCerts := make([]*x509.Certificate, len(conf.TlsIntermediateCerts))
for i, trustedCert := range conf.TlsIntermediateCerts {
cert, err := msp.getCertFromPem(trustedCert)
if err != nil {
return err
}
intermediateCerts[i] = cert
msp.tlsIntermediateCerts[i] = trustedCert
opts.Intermediates.AddCert(cert)
}
// ensure that our CAs are properly formed and that they are valid
for _, cert := range append(append([]*x509.Certificate{}, rootCerts...), intermediateCerts...) {
if cert == nil {
continue
}
if !isCACert(cert) {
return errors.Errorf("CA Certificate did not have the Subject Key Identifier extension, (SN: %s)", cert.SerialNumber)
}
if err := msp.validateTLSCAIdentity(cert, opts); err != nil {
return errors.WithMessage(err, fmt.Sprintf("CA Certificate is not valid, (SN: %s)", cert.SerialNumber))
}
}
return nil
}
func (msp *bccspmsp) setupV1(conf1 *m.FabricMSPConfig) error {
err := msp.preSetupV1(conf1)
if err != nil {
return err
}
err = msp.postSetupV1(conf1)
if err != nil {
return err
}
return nil
}
func (msp *bccspmsp) preSetupV1(conf *m.FabricMSPConfig) error {
// setup crypto config
if err := msp.setupCrypto(conf); err != nil {
return err
}
// Setup CAs
if err := msp.setupCAs(conf); err != nil {
return err
}
// Setup Admins
if err := msp.setupAdmins(conf); err != nil {
return err
}
// Setup CRLs
if err := msp.setupCRLs(conf); err != nil {
return err
}
// Finalize setup of the CAs
if err := msp.finalizeSetupCAs(conf); err != nil {
return err
}
// setup the signer (if present)
if err := msp.setupSigningIdentity(conf); err != nil {
return err
}
// setup TLS CAs
if err := msp.setupTLSCAs(conf); err != nil {
return err
}
// setup the OUs
if err := msp.setupOUs(conf); err != nil {
return err
}
return nil
}
func (msp *bccspmsp) postSetupV1(conf *m.FabricMSPConfig) error {
// make sure that admins are valid members as well
// this way, when we validate an admin MSP principal
// we can simply check for exact match of certs
for i, admin := range msp.admins {
err := admin.Validate()
if err != nil {
return errors.WithMessage(err, fmt.Sprintf("admin %d is invalid", i))
}
}
return nil
}
func (msp *bccspmsp) setupV11(conf *m.FabricMSPConfig) error {
err := msp.preSetupV1(conf)
if err != nil {
return err
}
// setup NodeOUs
if err := msp.setupNodeOUs(conf); err != nil {
return err
}
err = msp.postSetupV11(conf)
if err != nil {
return err
}
return nil
}
func (msp *bccspmsp) postSetupV11(conf *m.FabricMSPConfig) error {
// Check for OU enforcement
if !msp.ouEnforcement {
// No enforcement required. Call post setup as per V1
return msp.postSetupV1(conf)
}
// Check that admins are clients
principalBytes, err := proto.Marshal(&m.MSPRole{Role: m.MSPRole_CLIENT, MspIdentifier: msp.name})
if err != nil {
return errors.Wrapf(err, "failed creating MSPRole_CLIENT")
}
principal := &m.MSPPrincipal{
PrincipalClassification: m.MSPPrincipal_ROLE,
Principal: principalBytes}
for i, admin := range msp.admins {
err = admin.SatisfiesPrincipal(principal)
if err != nil {
return errors.WithMessage(err, fmt.Sprintf("admin %d is invalid", i))
}
}
return nil
}