forked from TrueCloudLab/certificates
109 lines
2.6 KiB
Go
109 lines
2.6 KiB
Go
package ca
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import (
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"crypto/tls"
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"crypto/x509"
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"sync"
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"github.com/smallstep/certificates/api"
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)
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// mutableTLSConfig allows to use a tls.Config with mutable cert pools.
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type mutableTLSConfig struct {
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sync.RWMutex
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config *tls.Config
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clientCerts []*x509.Certificate
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rootCerts []*x509.Certificate
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mutClientCerts []*x509.Certificate
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mutRootCerts []*x509.Certificate
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}
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// newMutableTLSConfig creates a new mutableTLSConfig using the passed one as
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// the base one.
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func newMutableTLSConfig() *mutableTLSConfig {
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return &mutableTLSConfig{
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clientCerts: []*x509.Certificate{},
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rootCerts: []*x509.Certificate{},
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mutClientCerts: []*x509.Certificate{},
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mutRootCerts: []*x509.Certificate{},
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}
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}
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// Init initializes the mutable tls.Config with the given tls.Config.
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func (c *mutableTLSConfig) Init(base *tls.Config) {
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c.Lock()
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c.config = base.Clone()
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c.Unlock()
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}
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// TLSConfig returns the updated tls.Config it it has changed. It's is used in
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// the tls.Config GetConfigForClient.
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func (c *mutableTLSConfig) TLSConfig() (config *tls.Config) {
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c.RLock()
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config = c.config
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c.RUnlock()
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return
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}
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// Reload reloads the tls.Config with the new CAs.
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func (c *mutableTLSConfig) Reload() {
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// Prepare new pools
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c.RLock()
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rootCAs := x509.NewCertPool()
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clientCAs := x509.NewCertPool()
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// Fixed certs
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for _, cert := range c.rootCerts {
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rootCAs.AddCert(cert)
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}
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for _, cert := range c.clientCerts {
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clientCAs.AddCert(cert)
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}
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// Mutable certs
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for _, cert := range c.mutRootCerts {
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rootCAs.AddCert(cert)
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}
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for _, cert := range c.mutClientCerts {
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clientCAs.AddCert(cert)
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}
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c.RUnlock()
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// Set new pool
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c.Lock()
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c.config.RootCAs = rootCAs
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c.config.ClientCAs = clientCAs
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c.mutRootCerts = []*x509.Certificate{}
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c.mutClientCerts = []*x509.Certificate{}
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c.Unlock()
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}
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// AddFixedClientCACert add an in-mutable cert to ClientCAs.
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func (c *mutableTLSConfig) AddInmutableClientCACert(cert *x509.Certificate) {
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c.Lock()
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c.clientCerts = append(c.clientCerts, cert)
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c.Unlock()
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}
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// AddInmutableRootCACert add an in-mutable cert to RootCas.
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func (c *mutableTLSConfig) AddInmutableRootCACert(cert *x509.Certificate) {
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c.Lock()
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c.rootCerts = append(c.rootCerts, cert)
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c.Unlock()
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}
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// AddClientCAs add mutable certs to ClientCAs.
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func (c *mutableTLSConfig) AddClientCAs(certs []api.Certificate) {
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c.Lock()
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for _, cert := range certs {
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c.mutClientCerts = append(c.mutClientCerts, cert.Certificate)
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}
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c.Unlock()
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}
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// AddRootCAs add mutable certs to RootCAs.
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func (c *mutableTLSConfig) AddRootCAs(certs []api.Certificate) {
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c.Lock()
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for _, cert := range certs {
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c.mutRootCerts = append(c.mutRootCerts, cert.Certificate)
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}
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c.Unlock()
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}
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