func mustNewCA() (string, string) {
cert.KeyBits = 512
caCert, caKey, err := cert.NewCA("juju testing", time.Now().AddDate(10, 0, 0))
if err != nil {
panic(err)
}
return string(caCert), string(caKey)
}
func (certSuite) TestWithNonUTCExpiry(c *gc.C) {
expiry, err := time.Parse("2006-01-02 15:04:05.999999999 -0700 MST", "2012-11-28 15:53:57 +0100 CET")
c.Assert(err, gc.IsNil)
certPEM, keyPEM, err := cert.NewCA("foo", expiry)
xcert, err := cert.ParseCert(certPEM)
c.Assert(err, gc.IsNil)
c.Assert(xcert.NotAfter.Equal(expiry), gc.Equals, true)
var noHostnames []string
certPEM, _, err = cert.NewServer(certPEM, keyPEM, expiry, noHostnames)
xcert, err = cert.ParseCert(certPEM)
c.Assert(err, gc.IsNil)
c.Assert(xcert.NotAfter.Equal(expiry), gc.Equals, true)
}
// ensureCertificates ensures that a CA certificate,
// server certificate, and private key exist in the log
// directory, and writes them if not. The CA certificate
// is entered into the environment configuration to be
// picked up by other agents.
func (h *RsyslogConfigHandler) ensureCertificates() error {
// We write ca-cert.pem last, after propagating into state.
// If it's there, then there's nothing to do. Otherwise,
// start over.
caCertPEM := h.syslogConfig.CACertPath()
if _, err := os.Stat(caCertPEM); err == nil {
return nil
}
// Files must be chowned to syslog:adm.
syslogUid, syslogGid, err := lookupUser("syslog")
if err != nil {
return err
}
// Generate a new CA and server cert/key pairs.
// The CA key will be discarded after the server
// cert has been generated.
expiry := time.Now().UTC().AddDate(10, 0, 0)
caCertPEM, caKeyPEM, err := cert.NewCA("rsyslog", expiry)
if err != nil {
return err
}
rsyslogCertPEM, rsyslogKeyPEM, err := cert.NewServer(caCertPEM, caKeyPEM, expiry, nil)
if err != nil {
return err
}
// Update the environment config with the CA cert,
// so clients can configure rsyslog.
if err := h.st.SetRsyslogCert(caCertPEM); err != nil {
return err
}
// Write the certificates and key. The CA certificate must be written last for idempotency.
for _, pair := range []struct {
path string
data string
}{
{h.syslogConfig.ServerCertPath(), rsyslogCertPEM},
{h.syslogConfig.ServerKeyPath(), rsyslogKeyPEM},
{h.syslogConfig.CACertPath(), caCertPEM},
} {
if err := writeFileAtomic(pair.path, []byte(pair.data), 0600, syslogUid, syslogGid); err != nil {
return err
}
}
return nil
}
func (certSuite) TestNewCA(c *gc.C) {
expiry := roundTime(time.Now().AddDate(0, 0, 1))
caCertPEM, caKeyPEM, err := cert.NewCA("foo", expiry)
c.Assert(err, gc.IsNil)
caCert, caKey, err := cert.ParseCertAndKey(caCertPEM, caKeyPEM)
c.Assert(err, gc.IsNil)
c.Assert(caKey, gc.FitsTypeOf, (*rsa.PrivateKey)(nil))
c.Assert(caCert.Subject.CommonName, gc.Equals, `juju-generated CA for environment "foo"`)
c.Assert(caCert.NotAfter.Equal(expiry), gc.Equals, true)
c.Assert(caCert.BasicConstraintsValid, gc.Equals, true)
c.Assert(caCert.IsCA, gc.Equals, true)
//c.Assert(caCert.MaxPathLen, Equals, 0) TODO it ends up as -1 - check that this is ok.
}
func (certSuite) TestVerify(c *gc.C) {
now := time.Now()
caCert, caKey, err := cert.NewCA("foo", now.Add(1*time.Minute))
c.Assert(err, gc.IsNil)
var noHostnames []string
srvCert, _, err := cert.NewServer(caCert, caKey, now.Add(3*time.Minute), noHostnames)
c.Assert(err, gc.IsNil)
err = cert.Verify(srvCert, caCert, now)
c.Assert(err, gc.IsNil)
err = cert.Verify(srvCert, caCert, now.Add(55*time.Second))
c.Assert(err, gc.IsNil)
// TODO(rog) why does this succeed?
// err = cert.Verify(srvCert, caCert, now.Add(-1 * time.Minute))
//c.Check(err, gc.ErrorMatches, "x509: certificate has expired or is not yet valid")
err = cert.Verify(srvCert, caCert, now.Add(2*time.Minute))
c.Check(err, gc.ErrorMatches, "x509: certificate has expired or is not yet valid")
caCert2, caKey2, err := cert.NewCA("bar", now.Add(1*time.Minute))
c.Assert(err, gc.IsNil)
// Check original server certificate against wrong CA.
err = cert.Verify(srvCert, caCert2, now)
c.Check(err, gc.ErrorMatches, "x509: certificate signed by unknown authority")
srvCert2, _, err := cert.NewServer(caCert2, caKey2, now.Add(1*time.Minute), noHostnames)
c.Assert(err, gc.IsNil)
// Check new server certificate against original CA.
err = cert.Verify(srvCert2, caCert, now)
c.Check(err, gc.ErrorMatches, "x509: certificate signed by unknown authority")
}
// ensureCertificate generates a new CA certificate and
// attaches it to the given environment configuration,
// unless the configuration already has one.
func ensureCertificate(cfg *config.Config) (*config.Config, error) {
_, hasCACert := cfg.CACert()
_, hasCAKey := cfg.CAPrivateKey()
if hasCACert && hasCAKey {
return cfg, nil
}
if hasCACert && !hasCAKey {
return nil, fmt.Errorf("environment configuration with a certificate but no CA private key")
}
caCert, caKey, err := cert.NewCA(cfg.Name(), time.Now().UTC().AddDate(10, 0, 0))
if err != nil {
return nil, err
}
return cfg.Apply(map[string]interface{}{
"ca-cert": string(caCert),
"ca-private-key": string(caKey),
})
}
func (certSuite) TestNewServer(c *gc.C) {
expiry := roundTime(time.Now().AddDate(1, 0, 0))
caCertPEM, caKeyPEM, err := cert.NewCA("foo", expiry)
c.Assert(err, gc.IsNil)
caCert, _, err := cert.ParseCertAndKey(caCertPEM, caKeyPEM)
c.Assert(err, gc.IsNil)
var noHostnames []string
srvCertPEM, srvKeyPEM, err := cert.NewServer(caCertPEM, caKeyPEM, expiry, noHostnames)
c.Assert(err, gc.IsNil)
srvCert, srvKey, err := cert.ParseCertAndKey(srvCertPEM, srvKeyPEM)
c.Assert(err, gc.IsNil)
c.Assert(srvCert.Subject.CommonName, gc.Equals, "*")
c.Assert(srvCert.NotAfter.Equal(expiry), gc.Equals, true)
c.Assert(srvCert.BasicConstraintsValid, gc.Equals, false)
c.Assert(srvCert.IsCA, gc.Equals, false)
c.Assert(srvCert.ExtKeyUsage, gc.DeepEquals, []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth})
checkTLSConnection(c, caCert, srvCert, srvKey)
}