TUN-1196: Allow TLS config client CA and root CA to be constructed from multiple certificates
This commit is contained in:
parent
c85c8526e8
commit
b59fd4b7d8
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@ -438,7 +438,7 @@ func tunnelFlags(shouldHide bool) []cli.Flag {
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}),
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altsrc.NewStringFlag(&cli.StringFlag{
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Name: "cacert",
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Usage: "Certificate Authority authenticating the Cloudflare tunnel connection.",
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Usage: "Certificate Authority authenticating connections with Cloudflare's edge network.",
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EnvVars: []string{"TUNNEL_CACERT"},
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Hidden: true,
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}),
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@ -198,12 +198,18 @@ func prepareTunnelConfig(c *cli.Context, buildInfo *origin.BuildInfo, version st
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return nil, errors.Wrap(err, "unable to connect to the origin")
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}
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toEdgeTLSConfig, err := createTunnelConfig(c)
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if err != nil {
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logger.WithError(err).Error("unable to create TLS config to connect with edge")
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return nil, errors.Wrap(err, "unable to create TLS config to connect with edge")
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}
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return &origin.TunnelConfig{
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EdgeAddrs: c.StringSlice("edge"),
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OriginUrl: originURL,
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Hostname: hostname,
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OriginCert: originCert,
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TlsConfig: tlsconfig.CreateTunnelConfig(c, c.StringSlice("edge")),
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TlsConfig: toEdgeTLSConfig,
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ClientTlsConfig: httpTransport.TLSClientConfig,
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Retries: c.Uint("retries"),
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HeartbeatInterval: c.Duration("heartbeat-interval"),
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@ -240,7 +246,7 @@ func loadCertPool(c *cli.Context, logger *logrus.Logger) (*x509.CertPool, error)
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}
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}
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originCertPool, err := tlsconfig.LoadOriginCertPool(originCustomCAPool)
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originCertPool, err := loadOriginCertPool(originCustomCAPool)
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if err != nil {
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return nil, errors.Wrap(err, "error loading the certificate pool")
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}
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@ -253,6 +259,86 @@ func loadCertPool(c *cli.Context, logger *logrus.Logger) (*x509.CertPool, error)
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return originCertPool, nil
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}
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func loadOriginCertPool(originCAPoolPEM []byte) (*x509.CertPool, error) {
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// Get the global pool
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certPool, err := loadGlobalCertPool()
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if err != nil {
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return nil, err
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}
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// Then, add any custom origin CA pool the user may have passed
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if originCAPoolPEM != nil {
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if !certPool.AppendCertsFromPEM(originCAPoolPEM) {
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logger.Warn("could not append the provided origin CA to the cloudflared certificate pool")
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}
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}
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return certPool, nil
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}
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func loadGlobalCertPool() (*x509.CertPool, error) {
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// First, obtain the system certificate pool
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certPool, err := x509.SystemCertPool()
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if err != nil {
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if runtime.GOOS != "windows" {
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logger.WithError(err).Warn("error obtaining the system certificates")
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}
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certPool = x509.NewCertPool()
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}
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// Next, append the Cloudflare CAs into the system pool
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cfRootCA, err := tlsconfig.GetCloudflareRootCA()
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if err != nil {
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return nil, errors.Wrap(err, "could not append Cloudflare Root CAs to cloudflared certificate pool")
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}
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for _, cert := range cfRootCA {
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certPool.AddCert(cert)
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}
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// Finally, add the Hello certificate into the pool (since it's self-signed)
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helloCert, err := tlsconfig.GetHelloCertificateX509()
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if err != nil {
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return nil, errors.Wrap(err, "could not append Hello server certificate to cloudflared certificate pool")
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}
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certPool.AddCert(helloCert)
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return certPool, nil
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}
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func createTunnelConfig(c *cli.Context) (*tls.Config, error) {
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var rootCAs []string
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if c.String("cacert") != "" {
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rootCAs = append(rootCAs, c.String("cacert"))
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}
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edgeAddrs := c.StringSlice("edge")
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userConfig := &tlsconfig.TLSParameters{RootCAs: rootCAs}
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tlsConfig, err := tlsconfig.GetConfig(userConfig)
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if err != nil {
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return nil, err
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}
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if tlsConfig.RootCAs == nil {
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rootCAPool := x509.NewCertPool()
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cfRootCA, err := tlsconfig.GetCloudflareRootCA()
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if err != nil {
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return nil, errors.Wrap(err, "could not append Cloudflare Root CAs to cloudflared certificate pool")
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}
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for _, cert := range cfRootCA {
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rootCAPool.AddCert(cert)
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}
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tlsConfig.RootCAs = rootCAPool
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tlsConfig.ServerName = "cftunnel.com"
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} else if len(edgeAddrs) > 0 {
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// Set for development environments and for testing specific origintunneld instances
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tlsConfig.ServerName, _, _ = net.SplitHostPort(edgeAddrs[0])
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}
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if tlsConfig.ServerName == "" && !tlsConfig.InsecureSkipVerify {
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return nil, fmt.Errorf("either ServerName or InsecureSkipVerify must be specified in the tls.Config")
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}
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return tlsConfig, nil
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}
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func isRunningFromTerminal() bool {
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return terminal.IsTerminal(int(os.Stdout.Fd()))
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}
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@ -0,0 +1,214 @@
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// +build ignore
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// TODO: Remove the above build tag and include this test when we start compiling with Golang 1.10.0+
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package tunnel
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import (
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"crypto/x509"
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"crypto/x509/pkix"
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"encoding/asn1"
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"os"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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// Generated using `openssl req -newkey rsa:512 -nodes -x509 -days 3650`
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var samplePEM = []byte(`
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-----BEGIN CERTIFICATE-----
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MIIB4DCCAYoCCQCb/H0EUrdXEjANBgkqhkiG9w0BAQsFADB3MQswCQYDVQQGEwJV
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UzEOMAwGA1UECAwFVGV4YXMxDzANBgNVBAcMBkF1c3RpbjEZMBcGA1UECgwQQ2xv
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dWRmbGFyZSwgSW5jLjEZMBcGA1UECwwQUHJvZHVjdCBTdHJhdGVneTERMA8GA1UE
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AwwIVGVzdCBPbmUwHhcNMTgwNDI2MTYxMDUxWhcNMjgwNDIzMTYxMDUxWjB3MQsw
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CQYDVQQGEwJVUzEOMAwGA1UECAwFVGV4YXMxDzANBgNVBAcMBkF1c3RpbjEZMBcG
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A1UECgwQQ2xvdWRmbGFyZSwgSW5jLjEZMBcGA1UECwwQUHJvZHVjdCBTdHJhdGVn
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eTERMA8GA1UEAwwIVGVzdCBPbmUwXDANBgkqhkiG9w0BAQEFAANLADBIAkEAwVQD
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K0SJ25UFLznm2pU3zhzMEvpDEofHVNnCjk4mlDrtVop7PkKZ8pDEmuQANltUrxC8
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yHBE2wXMv+GlH+bDtwIDAQABMA0GCSqGSIb3DQEBCwUAA0EAjVYQzozIFPkt/HRY
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uUoZ8zEHIDICb0syFf5VAjm9AgTwIPzUmD+c5vl6LWDnxq7L45nLCzhhQ6YmiwDz
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X7Wcyg==
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-----END CERTIFICATE-----
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-----BEGIN CERTIFICATE-----
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MIIB4DCCAYoCCQDZfCdAJ+mwzDANBgkqhkiG9w0BAQsFADB3MQswCQYDVQQGEwJV
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UzEOMAwGA1UECAwFVGV4YXMxDzANBgNVBAcMBkF1c3RpbjEZMBcGA1UECgwQQ2xv
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dWRmbGFyZSwgSW5jLjEZMBcGA1UECwwQUHJvZHVjdCBTdHJhdGVneTERMA8GA1UE
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AwwIVGVzdCBUd28wHhcNMTgwNDI2MTYxMTIwWhcNMjgwNDIzMTYxMTIwWjB3MQsw
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CQYDVQQGEwJVUzEOMAwGA1UECAwFVGV4YXMxDzANBgNVBAcMBkF1c3RpbjEZMBcG
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A1UECgwQQ2xvdWRmbGFyZSwgSW5jLjEZMBcGA1UECwwQUHJvZHVjdCBTdHJhdGVn
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eTERMA8GA1UEAwwIVGVzdCBUd28wXDANBgkqhkiG9w0BAQEFAANLADBIAkEAoHKp
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ROVK3zCSsH7ocYeyRAML4V7SFAbZcb4WIwDnE08oMBVRkQVcW5tqEkvG3RiClfzV
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wZIJ3CfqKIeSNSDU9wIDAQABMA0GCSqGSIb3DQEBCwUAA0EAJw2gUbnPiq4C2p5b
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iWzlA9Q7aKo+VQ4H7IZS7tTccr59nVjvH/TG3eWujpnocr4TOqW9M3CK1DF9mUGP
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3pQ3Jg==
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-----END CERTIFICATE-----
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`)
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var systemCertPoolSubjects []*pkix.Name
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type certificateFixture struct {
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ou string
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cn string
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}
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func TestMain(m *testing.M) {
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systemCertPool, err := x509.SystemCertPool()
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if isUnrecoverableError(err) {
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os.Exit(1)
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}
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if systemCertPool == nil {
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// On Windows, let's just assume the system cert pool was empty
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systemCertPool = x509.NewCertPool()
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}
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systemCertPoolSubjects, err = getCertPoolSubjects(systemCertPool)
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if err != nil {
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os.Exit(1)
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}
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os.Exit(m.Run())
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}
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func TestLoadOriginCertPoolJustSystemPool(t *testing.T) {
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certPoolSubjects := loadCertPoolSubjects(t, nil)
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extraSubjects := subjectSubtract(systemCertPoolSubjects, certPoolSubjects)
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// Remove extra subjects from the cert pool
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var filteredSystemCertPoolSubjects []*pkix.Name
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t.Log(extraSubjects)
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OUTER:
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for _, subject := range certPoolSubjects {
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for _, extraSubject := range extraSubjects {
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if subject == extraSubject {
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t.Log(extraSubject)
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continue OUTER
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}
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}
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filteredSystemCertPoolSubjects = append(filteredSystemCertPoolSubjects, subject)
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}
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assert.Equal(t, len(filteredSystemCertPoolSubjects), len(systemCertPoolSubjects))
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difference := subjectSubtract(systemCertPoolSubjects, filteredSystemCertPoolSubjects)
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assert.Equal(t, 0, len(difference))
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}
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func TestLoadOriginCertPoolCFCertificates(t *testing.T) {
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certPoolSubjects := loadCertPoolSubjects(t, nil)
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extraSubjects := subjectSubtract(systemCertPoolSubjects, certPoolSubjects)
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expected := []*certificateFixture{
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{ou: "CloudFlare Origin SSL ECC Certificate Authority"},
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{ou: "CloudFlare Origin SSL Certificate Authority"},
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{cn: "origin-pull.cloudflare.net"},
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{cn: "Argo Tunnel Sample Hello Server Certificate"},
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}
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assertFixturesMatchSubjects(t, expected, extraSubjects)
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}
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func TestLoadOriginCertPoolWithExtraPEMs(t *testing.T) {
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certPoolWithoutPEMSubjects := loadCertPoolSubjects(t, nil)
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certPoolWithPEMSubjects := loadCertPoolSubjects(t, samplePEM)
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difference := subjectSubtract(certPoolWithoutPEMSubjects, certPoolWithPEMSubjects)
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assert.Equal(t, 2, len(difference))
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expected := []*certificateFixture{
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{cn: "Test One"},
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{cn: "Test Two"},
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}
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assertFixturesMatchSubjects(t, expected, difference)
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}
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func loadCertPoolSubjects(t *testing.T, originCAPoolPEM []byte) []*pkix.Name {
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certPool, err := loadOriginCertPool(originCAPoolPEM)
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if isUnrecoverableError(err) {
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t.Fatal(err)
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}
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assert.NotEmpty(t, certPool.Subjects())
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certPoolSubjects, err := getCertPoolSubjects(certPool)
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if err != nil {
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t.Fatal(err)
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}
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return certPoolSubjects
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}
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func assertFixturesMatchSubjects(t *testing.T, fixtures []*certificateFixture, subjects []*pkix.Name) {
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assert.Equal(t, len(fixtures), len(subjects))
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for _, fixture := range fixtures {
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found := false
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for _, subject := range subjects {
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found = found || fixtureMatchesSubjectPredicate(fixture, subject)
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}
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if !found {
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t.Fail()
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}
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}
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}
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func fixtureMatchesSubjectPredicate(fixture *certificateFixture, subject *pkix.Name) bool {
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cnMatch := true
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if fixture.cn != "" {
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cnMatch = fixture.cn == subject.CommonName
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}
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ouMatch := true
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if fixture.ou != "" {
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ouMatch = len(subject.OrganizationalUnit) > 0 && fixture.ou == subject.OrganizationalUnit[0]
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}
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return cnMatch && ouMatch
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}
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func subjectSubtract(left []*pkix.Name, right []*pkix.Name) []*pkix.Name {
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var difference []*pkix.Name
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var found bool
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for _, r := range right {
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found = false
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for _, l := range left {
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if (*l).String() == (*r).String() {
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found = true
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}
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}
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if !found {
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difference = append(difference, r)
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}
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}
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return difference
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}
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func getCertPoolSubjects(certPool *x509.CertPool) ([]*pkix.Name, error) {
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var subjects []*pkix.Name
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for _, subject := range certPool.Subjects() {
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var sequence pkix.RDNSequence
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_, err := asn1.Unmarshal(subject, &sequence)
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if err != nil {
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return nil, err
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}
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name := pkix.Name{}
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name.FillFromRDNSequence(&sequence)
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subjects = append(subjects, &name)
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}
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return subjects, nil
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}
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func isUnrecoverableError(err error) bool {
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return err != nil && err.Error() != "crypto/x509: system root pool is not available on Windows"
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}
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@ -2,14 +2,10 @@ package tlsconfig
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import (
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"crypto/tls"
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"errors"
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"fmt"
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"sync"
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tunnellog "github.com/cloudflare/cloudflared/log"
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"github.com/getsentry/raven-go"
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log "github.com/sirupsen/logrus"
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"gopkg.in/urfave/cli.v2"
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)
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// CertReloader can load and reload a TLS certificate from a particular filepath.
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@ -21,18 +17,14 @@ type CertReloader struct {
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keyPath string
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}
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// NewCertReloader makes a CertReloader, memorizing the filepaths in the context/flags.
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func NewCertReloader(c *cli.Context, f CLIFlags) (*CertReloader, error) {
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if !c.IsSet(f.Cert) {
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return nil, errors.New("CertReloader: cert not provided")
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}
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if !c.IsSet(f.Key) {
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return nil, errors.New("CertReloader: key not provided")
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}
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// NewCertReloader makes a CertReloader. It loads the cert during initialization to make sure certPath and keyPath are valid
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func NewCertReloader(certPath, keyPath string) (*CertReloader, error) {
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cr := new(CertReloader)
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cr.certPath = c.String(f.Cert)
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cr.keyPath = c.String(f.Key)
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cr.LoadCert()
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cr.certPath = certPath
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cr.keyPath = keyPath
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if err := cr.LoadCert(); err != nil {
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return nil, err
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}
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return cr, nil
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}
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@ -45,18 +37,17 @@ func (cr *CertReloader) Cert(clientHello *tls.ClientHelloInfo) (*tls.Certificate
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// LoadCert loads a TLS certificate from the CertReloader's specified filepath.
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// Call this after writing a new certificate to the disk (e.g. after renewing a certificate)
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func (cr *CertReloader) LoadCert() {
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func (cr *CertReloader) LoadCert() error {
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cr.Lock()
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defer cr.Unlock()
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log.SetFormatter(&tunnellog.JSONFormatter{})
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log.Info("Reloading certificate")
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cert, err := tls.LoadX509KeyPair(cr.certPath, cr.keyPath)
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// Keep the old certificate if there's a problem reading the new one.
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if err != nil {
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raven.CaptureError(fmt.Errorf("Error parsing X509 key pair: %v", err), nil)
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return
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return err
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}
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cr.certificate = &cert
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return nil
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}
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@ -2,6 +2,7 @@ package tlsconfig
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import (
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"crypto/x509"
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"encoding/pem"
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)
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// TODO: remove the Origin CA root certs when migrated to Authenticated Origin Pull certs
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|
@ -85,11 +86,26 @@ QzMmZpRpIBB321ZBlcnlxiTJvWxvbCPHKHj20VwwAz7LONF59s84ZsOqfoBv8gKM
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s0s5dsq5zpLeaw==
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-----END CERTIFICATE-----`)
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func GetCloudflareRootCA() *x509.CertPool {
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ca := x509.NewCertPool()
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if !ca.AppendCertsFromPEM([]byte(cloudflareRootCA)) {
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// should never happen
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panic("failure loading Cloudflare origin CA pem")
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func GetCloudflareRootCA() ([]*x509.Certificate, error) {
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var certs []*x509.Certificate
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pemBlocks := cloudflareRootCA
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for len(pemBlocks) > 0 {
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var block *pem.Block
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block, pemBlocks = pem.Decode(pemBlocks)
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if block == nil {
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break
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}
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if block.Type != "CERTIFICATE" {
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continue
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}
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cert, err := x509.ParseCertificate(block.Bytes)
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if err != nil {
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return nil, err
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}
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certs = append(certs, cert)
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}
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return ca
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||||
return certs, nil
|
||||
}
|
||||
|
|
|
@ -0,0 +1,13 @@
|
|||
-----BEGIN CERTIFICATE-----
|
||||
MIICBjCCAbCgAwIBAgIJAPKk4bYMrSFMMA0GCSqGSIb3DQEBCwUAMF0xCzAJBgNV
|
||||
BAYTAlVTMQ4wDAYDVQQIDAVUZXhhczEPMA0GA1UEBwwGQXVzdGluMRkwFwYDVQQK
|
||||
DBBDbG91ZGZsYXJlLCBJbmMuMRIwEAYDVQQDDAlsb2NhbGhvc3QwHhcNMTgxMTE1
|
||||
MjA1NzU3WhcNMjgxMTEyMjA1NzU3WjBdMQswCQYDVQQGEwJVUzEOMAwGA1UECAwF
|
||||
VGV4YXMxDzANBgNVBAcMBkF1c3RpbjEZMBcGA1UECgwQQ2xvdWRmbGFyZSwgSW5j
|
||||
LjESMBAGA1UEAwwJbG9jYWxob3N0MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAOQN
|
||||
pTRn5wLf8SSI5x2kpDvbdDy7lfhamJ2En4Q+wy1cSKp8bn8/oyhVF7QTsimDGTI4
|
||||
45pV9nDfNJPYB3IW0x0CAwEAAaNTMFEwHQYDVR0OBBYEFE4jIa97mIEiYFa02X++
|
||||
uu5mCEn+MB8GA1UdIwQYMBaAFE4jIa97mIEiYFa02X++uu5mCEn+MA8GA1UdEwEB
|
||||
/wQFMAMBAf8wDQYJKoZIhvcNAQELBQADQQAkE+pDee0o5cNcZRUszy8sTQzB1Wlp
|
||||
J6ucfmo16crqRaK7uGvhkMyibIc4D8z2Cxw3aI3IMMFoIIlYoYKiUcbd
|
||||
-----END CERTIFICATE-----
|
|
@ -0,0 +1,13 @@
|
|||
-----BEGIN CERTIFICATE-----
|
||||
MIICBjCCAbCgAwIBAgIJAN6cXRTbJtFnMA0GCSqGSIb3DQEBCwUAMF0xCzAJBgNV
|
||||
BAYTAlVTMQ4wDAYDVQQIDAVUZXhhczEPMA0GA1UEBwwGQXVzdGluMRgwFgYDVQQK
|
||||
DA9DbG91ZGZsYXJlLCBJbmMxEzARBgNVBAMMCmxvY2FsaG9zdDIwHhcNMTgxMTE1
|
||||
MjExMTU4WhcNMjgxMTEyMjExMTU4WjBdMQswCQYDVQQGEwJVUzEOMAwGA1UECAwF
|
||||
VGV4YXMxDzANBgNVBAcMBkF1c3RpbjEYMBYGA1UECgwPQ2xvdWRmbGFyZSwgSW5j
|
||||
MRMwEQYDVQQDDApsb2NhbGhvc3QyMFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAKQx
|
||||
IMZ6QgXoul2ITF/7sly4fW2Ol+a/AYw42zCWhVqOXv8AhY21I0Q8lkRR6wOroQwZ
|
||||
O7jKKOcE5TnR/NRcZr8CAwEAAaNTMFEwHQYDVR0OBBYEFONKxLZc2RUD0KTHkAz4
|
||||
8nrb5688MB8GA1UdIwQYMBaAFONKxLZc2RUD0KTHkAz48nrb5688MA8GA1UdEwEB
|
||||
/wQFMAMBAf8wDQYJKoZIhvcNAQELBQADQQA56pwhvGpNPjyLcWfJHu/vI3ZjdoLB
|
||||
LnrkRaMjJmv0H0Beh4upJhoz8u6lhMACerKQrrdQhEPB2u+maFrEBtmN
|
||||
-----END CERTIFICATE-----
|
|
@ -0,0 +1,10 @@
|
|||
-----BEGIN PRIVATE KEY-----
|
||||
MIIBVQIBADANBgkqhkiG9w0BAQEFAASCAT8wggE7AgEAAkEA5A2lNGfnAt/xJIjn
|
||||
HaSkO9t0PLuV+FqYnYSfhD7DLVxIqnxufz+jKFUXtBOyKYMZMjjjmlX2cN80k9gH
|
||||
chbTHQIDAQABAkAoeDtu91lJa1AxuZG58vOqI6GW/Xr5naojmdts7m5YaAhDa7DE
|
||||
zJUp4d8SP5cGBf1/PB3x6Cu9UviFNQ16wmzJAiEA8gUm4UYpWZD4Ze2l/xb+BK8D
|
||||
IglSUIy1VxW+X1G55wMCIQDxOfXiFzPqnv/e5avKGv6CU11Dhmbi1OpiyybZTjGz
|
||||
XwIhAM3bE/cJdqJ4bNBGE6umIupY8pFA3IMnLBempwbsvPOBAiEAgzJ+5OSxu92W
|
||||
VGidsmJUIhWtF9i1hJFAmVLcYjwBFAkCICtjP/vv0qOZWk4mAAn2zz9UVWp45DSR
|
||||
p/FA8V77ohXD
|
||||
-----END PRIVATE KEY-----
|
|
@ -6,150 +6,81 @@ import (
|
|||
"crypto/tls"
|
||||
"crypto/x509"
|
||||
"io/ioutil"
|
||||
"net"
|
||||
|
||||
"github.com/cloudflare/cloudflared/log"
|
||||
"github.com/pkg/errors"
|
||||
"gopkg.in/urfave/cli.v2"
|
||||
"runtime"
|
||||
)
|
||||
|
||||
var logger = log.CreateLogger()
|
||||
|
||||
// CLIFlags names the flags used to configure TLS for a command or subsystem.
|
||||
// The nil value for a field means the flag is ignored.
|
||||
type CLIFlags struct {
|
||||
Cert string
|
||||
Key string
|
||||
ClientCert string
|
||||
RootCA string
|
||||
// Config is the user provided parameters to create a tls.Config
|
||||
type TLSParameters struct {
|
||||
Cert string
|
||||
Key string
|
||||
GetCertificate *CertReloader
|
||||
ClientCAs []string
|
||||
RootCAs []string
|
||||
ServerName string
|
||||
CurvePreferences []tls.CurveID
|
||||
}
|
||||
|
||||
// GetConfig returns a TLS configuration according to the flags defined in f and
|
||||
// set by the user.
|
||||
func (f CLIFlags) GetConfig(c *cli.Context) *tls.Config {
|
||||
config := &tls.Config{}
|
||||
|
||||
if c.IsSet(f.Cert) && c.IsSet(f.Key) {
|
||||
cert, err := tls.LoadX509KeyPair(c.String(f.Cert), c.String(f.Key))
|
||||
// GetConfig returns a TLS configuration according to the Config set by the user.
|
||||
func GetConfig(p *TLSParameters) (*tls.Config, error) {
|
||||
tlsconfig := &tls.Config{}
|
||||
if p.GetCertificate != nil {
|
||||
tlsconfig.GetCertificate = p.GetCertificate.Cert
|
||||
tlsconfig.BuildNameToCertificate()
|
||||
} else if p.Cert != "" && p.Key != "" {
|
||||
cert, err := tls.LoadX509KeyPair(p.Cert, p.Key)
|
||||
if err != nil {
|
||||
logger.WithError(err).Fatal("Error parsing X509 key pair")
|
||||
return nil, errors.Wrap(err, "Error parsing X509 key pair")
|
||||
}
|
||||
config.Certificates = []tls.Certificate{cert}
|
||||
config.BuildNameToCertificate()
|
||||
tlsconfig.Certificates = []tls.Certificate{cert}
|
||||
tlsconfig.BuildNameToCertificate()
|
||||
}
|
||||
return f.finishGettingConfig(c, config)
|
||||
}
|
||||
|
||||
func (f CLIFlags) GetConfigReloadableCert(c *cli.Context, cr *CertReloader) *tls.Config {
|
||||
config := &tls.Config{
|
||||
GetCertificate: cr.Cert,
|
||||
}
|
||||
config.BuildNameToCertificate()
|
||||
return f.finishGettingConfig(c, config)
|
||||
}
|
||||
|
||||
func (f CLIFlags) finishGettingConfig(c *cli.Context, config *tls.Config) *tls.Config {
|
||||
if c.IsSet(f.ClientCert) {
|
||||
if len(p.ClientCAs) > 0 {
|
||||
// set of root certificate authorities that servers use if required to verify a client certificate
|
||||
// by the policy in ClientAuth
|
||||
config.ClientCAs = LoadCert(c.String(f.ClientCert))
|
||||
clientCAs, err := LoadCert(p.ClientCAs)
|
||||
if err != nil {
|
||||
return nil, errors.Wrap(err, "Error loading client CAs")
|
||||
}
|
||||
tlsconfig.ClientCAs = clientCAs
|
||||
// server's policy for TLS Client Authentication. Default is no client cert
|
||||
config.ClientAuth = tls.RequireAndVerifyClientCert
|
||||
tlsconfig.ClientAuth = tls.RequireAndVerifyClientCert
|
||||
}
|
||||
// set of root certificate authorities that clients use when verifying server certificates
|
||||
if c.IsSet(f.RootCA) {
|
||||
config.RootCAs = LoadCert(c.String(f.RootCA))
|
||||
|
||||
if len(p.RootCAs) > 0 {
|
||||
rootCAs, err := LoadCert(p.RootCAs)
|
||||
if err != nil {
|
||||
return nil, errors.Wrap(err, "Error loading root CAs")
|
||||
}
|
||||
tlsconfig.RootCAs = rootCAs
|
||||
}
|
||||
// we optimize CurveP256
|
||||
config.CurvePreferences = []tls.CurveID{tls.CurveP256}
|
||||
return config
|
||||
|
||||
if p.ServerName != "" {
|
||||
tlsconfig.ServerName = p.ServerName
|
||||
}
|
||||
|
||||
if len(p.CurvePreferences) > 0 {
|
||||
tlsconfig.CurvePreferences = p.CurvePreferences
|
||||
} else {
|
||||
// Cloudflare optimize CurveP256
|
||||
tlsconfig.CurvePreferences = []tls.CurveID{tls.CurveP256}
|
||||
}
|
||||
|
||||
return tlsconfig, nil
|
||||
}
|
||||
|
||||
// LoadCert creates a CertPool containing all certificates in a PEM-format file.
|
||||
func LoadCert(certPath string) *x509.CertPool {
|
||||
caCert, err := ioutil.ReadFile(certPath)
|
||||
if err != nil {
|
||||
logger.WithError(err).Fatalf("Error reading certificate %s", certPath)
|
||||
}
|
||||
func LoadCert(certPaths []string) (*x509.CertPool, error) {
|
||||
ca := x509.NewCertPool()
|
||||
if !ca.AppendCertsFromPEM(caCert) {
|
||||
logger.WithError(err).Fatalf("Error parsing certificate %s", certPath)
|
||||
}
|
||||
return ca
|
||||
}
|
||||
|
||||
func LoadGlobalCertPool() (*x509.CertPool, error) {
|
||||
success := false
|
||||
|
||||
// First, obtain the system certificate pool
|
||||
certPool, systemCertPoolErr := x509.SystemCertPool()
|
||||
if systemCertPoolErr != nil {
|
||||
if runtime.GOOS != "windows" {
|
||||
logger.Warnf("error obtaining the system certificates: %s", systemCertPoolErr)
|
||||
for _, certPath := range certPaths {
|
||||
caCert, err := ioutil.ReadFile(certPath)
|
||||
if err != nil {
|
||||
return nil, errors.Wrapf(err, "Error reading certificate %s", certPath)
|
||||
}
|
||||
certPool = x509.NewCertPool()
|
||||
} else {
|
||||
success = true
|
||||
}
|
||||
|
||||
// Next, append the Cloudflare CA pool into the system pool
|
||||
if !certPool.AppendCertsFromPEM(cloudflareRootCA) {
|
||||
logger.Warn("could not append the CF certificate to the cloudflared certificate pool")
|
||||
} else {
|
||||
success = true
|
||||
}
|
||||
|
||||
if success != true { // Obtaining any of the CAs has failed; this is a fatal error
|
||||
return nil, errors.New("error loading any of the CAs into the global certificate pool")
|
||||
}
|
||||
|
||||
// Finally, add the Hello certificate into the pool (since it's self-signed)
|
||||
helloCertificate, err := GetHelloCertificateX509()
|
||||
if err != nil {
|
||||
logger.Warn("error obtaining the Hello server certificate")
|
||||
}
|
||||
|
||||
certPool.AddCert(helloCertificate)
|
||||
|
||||
return certPool, nil
|
||||
}
|
||||
|
||||
func LoadOriginCertPool(originCAPoolPEM []byte) (*x509.CertPool, error) {
|
||||
success := false
|
||||
|
||||
// Get the global pool
|
||||
certPool, globalPoolErr := LoadGlobalCertPool()
|
||||
if globalPoolErr != nil {
|
||||
certPool = x509.NewCertPool()
|
||||
} else {
|
||||
success = true
|
||||
}
|
||||
|
||||
// Then, add any custom origin CA pool the user may have passed
|
||||
if originCAPoolPEM != nil {
|
||||
if !certPool.AppendCertsFromPEM(originCAPoolPEM) {
|
||||
logger.Warn("could not append the provided origin CA to the cloudflared certificate pool")
|
||||
} else {
|
||||
success = true
|
||||
if !ca.AppendCertsFromPEM(caCert) {
|
||||
return nil, errors.Wrapf(err, "Error parsing certificate %s", certPath)
|
||||
}
|
||||
}
|
||||
|
||||
if success != true {
|
||||
return nil, errors.New("error loading any of the CAs into the origin certificate pool")
|
||||
}
|
||||
|
||||
return certPool, nil
|
||||
}
|
||||
|
||||
func CreateTunnelConfig(c *cli.Context, addrs []string) *tls.Config {
|
||||
tlsConfig := CLIFlags{RootCA: "cacert"}.GetConfig(c)
|
||||
if tlsConfig.RootCAs == nil {
|
||||
tlsConfig.RootCAs = GetCloudflareRootCA()
|
||||
tlsConfig.ServerName = "cftunnel.com"
|
||||
} else if len(addrs) > 0 {
|
||||
// Set for development environments and for testing specific origintunneld instances
|
||||
tlsConfig.ServerName, _, _ = net.SplitHostPort(addrs[0])
|
||||
}
|
||||
return tlsConfig
|
||||
return ca, nil
|
||||
}
|
||||
|
|
|
@ -1,214 +1,84 @@
|
|||
// +build ignore
|
||||
// TODO: Remove the above build tag and include this test when we start compiling with Golang 1.10.0+
|
||||
|
||||
package tlsconfig
|
||||
|
||||
import (
|
||||
"crypto/x509"
|
||||
"crypto/x509/pkix"
|
||||
"encoding/asn1"
|
||||
"os"
|
||||
"crypto/tls"
|
||||
"testing"
|
||||
|
||||
"github.com/stretchr/testify/assert"
|
||||
)
|
||||
|
||||
// Generated using `openssl req -newkey rsa:512 -nodes -x509 -days 3650`
|
||||
var samplePEM = []byte(`
|
||||
-----BEGIN CERTIFICATE-----
|
||||
MIIB4DCCAYoCCQCb/H0EUrdXEjANBgkqhkiG9w0BAQsFADB3MQswCQYDVQQGEwJV
|
||||
UzEOMAwGA1UECAwFVGV4YXMxDzANBgNVBAcMBkF1c3RpbjEZMBcGA1UECgwQQ2xv
|
||||
dWRmbGFyZSwgSW5jLjEZMBcGA1UECwwQUHJvZHVjdCBTdHJhdGVneTERMA8GA1UE
|
||||
AwwIVGVzdCBPbmUwHhcNMTgwNDI2MTYxMDUxWhcNMjgwNDIzMTYxMDUxWjB3MQsw
|
||||
CQYDVQQGEwJVUzEOMAwGA1UECAwFVGV4YXMxDzANBgNVBAcMBkF1c3RpbjEZMBcG
|
||||
A1UECgwQQ2xvdWRmbGFyZSwgSW5jLjEZMBcGA1UECwwQUHJvZHVjdCBTdHJhdGVn
|
||||
eTERMA8GA1UEAwwIVGVzdCBPbmUwXDANBgkqhkiG9w0BAQEFAANLADBIAkEAwVQD
|
||||
K0SJ25UFLznm2pU3zhzMEvpDEofHVNnCjk4mlDrtVop7PkKZ8pDEmuQANltUrxC8
|
||||
yHBE2wXMv+GlH+bDtwIDAQABMA0GCSqGSIb3DQEBCwUAA0EAjVYQzozIFPkt/HRY
|
||||
uUoZ8zEHIDICb0syFf5VAjm9AgTwIPzUmD+c5vl6LWDnxq7L45nLCzhhQ6YmiwDz
|
||||
X7Wcyg==
|
||||
-----END CERTIFICATE-----
|
||||
-----BEGIN CERTIFICATE-----
|
||||
MIIB4DCCAYoCCQDZfCdAJ+mwzDANBgkqhkiG9w0BAQsFADB3MQswCQYDVQQGEwJV
|
||||
UzEOMAwGA1UECAwFVGV4YXMxDzANBgNVBAcMBkF1c3RpbjEZMBcGA1UECgwQQ2xv
|
||||
dWRmbGFyZSwgSW5jLjEZMBcGA1UECwwQUHJvZHVjdCBTdHJhdGVneTERMA8GA1UE
|
||||
AwwIVGVzdCBUd28wHhcNMTgwNDI2MTYxMTIwWhcNMjgwNDIzMTYxMTIwWjB3MQsw
|
||||
CQYDVQQGEwJVUzEOMAwGA1UECAwFVGV4YXMxDzANBgNVBAcMBkF1c3RpbjEZMBcG
|
||||
A1UECgwQQ2xvdWRmbGFyZSwgSW5jLjEZMBcGA1UECwwQUHJvZHVjdCBTdHJhdGVn
|
||||
eTERMA8GA1UEAwwIVGVzdCBUd28wXDANBgkqhkiG9w0BAQEFAANLADBIAkEAoHKp
|
||||
ROVK3zCSsH7ocYeyRAML4V7SFAbZcb4WIwDnE08oMBVRkQVcW5tqEkvG3RiClfzV
|
||||
wZIJ3CfqKIeSNSDU9wIDAQABMA0GCSqGSIb3DQEBCwUAA0EAJw2gUbnPiq4C2p5b
|
||||
iWzlA9Q7aKo+VQ4H7IZS7tTccr59nVjvH/TG3eWujpnocr4TOqW9M3CK1DF9mUGP
|
||||
3pQ3Jg==
|
||||
-----END CERTIFICATE-----
|
||||
`)
|
||||
// testcert.pem and testcert2.pem are Generated using `openssl req -newkey rsa:512 -nodes -x509 -days 3650`
|
||||
const (
|
||||
testcertCommonName = "localhost"
|
||||
)
|
||||
|
||||
var systemCertPoolSubjects []*pkix.Name
|
||||
func TestGetFromEmptyConfig(t *testing.T) {
|
||||
c := &TLSParameters{}
|
||||
|
||||
type certificateFixture struct {
|
||||
ou string
|
||||
cn string
|
||||
tlsConfig, err := GetConfig(c)
|
||||
assert.NoError(t, err)
|
||||
assert.Empty(t, tlsConfig.Certificates)
|
||||
|
||||
assert.Empty(t, tlsConfig.NameToCertificate)
|
||||
|
||||
assert.Nil(t, tlsConfig.ClientCAs)
|
||||
assert.Equal(t, tls.NoClientCert, tlsConfig.ClientAuth)
|
||||
|
||||
assert.Nil(t, tlsConfig.RootCAs)
|
||||
|
||||
assert.Len(t, tlsConfig.CurvePreferences, 1)
|
||||
assert.Equal(t, tls.CurveP256, tlsConfig.CurvePreferences[0])
|
||||
}
|
||||
|
||||
func TestMain(m *testing.M) {
|
||||
systemCertPool, err := x509.SystemCertPool()
|
||||
if isUnrecoverableError(err) {
|
||||
os.Exit(1)
|
||||
}
|
||||
func TestGetConfig(t *testing.T) {
|
||||
cert, err := tls.LoadX509KeyPair("testcert.pem", "testkey.pem")
|
||||
assert.NoError(t, err)
|
||||
|
||||
if systemCertPool == nil {
|
||||
// On Windows, let's just assume the system cert pool was empty
|
||||
systemCertPool = x509.NewCertPool()
|
||||
c := &TLSParameters{
|
||||
Cert: "testcert.pem",
|
||||
Key: "testkey.pem",
|
||||
ClientCAs: []string{"testcert.pem", "testcert2.pem"},
|
||||
RootCAs: []string{"testcert.pem", "testcert2.pem"},
|
||||
ServerName: "test",
|
||||
CurvePreferences: []tls.CurveID{tls.CurveP384},
|
||||
}
|
||||
tlsConfig, err := GetConfig(c)
|
||||
assert.NoError(t, err)
|
||||
assert.Len(t, tlsConfig.Certificates, 1)
|
||||
assert.Equal(t, cert, tlsConfig.Certificates[0])
|
||||
|
||||
systemCertPoolSubjects, err = getCertPoolSubjects(systemCertPool)
|
||||
if err != nil {
|
||||
os.Exit(1)
|
||||
}
|
||||
assert.Equal(t, cert, *tlsConfig.NameToCertificate[testcertCommonName])
|
||||
|
||||
os.Exit(m.Run())
|
||||
assert.NotNil(t, tlsConfig.ClientCAs)
|
||||
assert.Equal(t, tls.RequireAndVerifyClientCert, tlsConfig.ClientAuth)
|
||||
|
||||
assert.NotNil(t, tlsConfig.RootCAs)
|
||||
|
||||
assert.Len(t, tlsConfig.CurvePreferences, 1)
|
||||
assert.Equal(t, tls.CurveP384, tlsConfig.CurvePreferences[0])
|
||||
}
|
||||
|
||||
func TestLoadOriginCertPoolJustSystemPool(t *testing.T) {
|
||||
certPoolSubjects := loadCertPoolSubjects(t, nil)
|
||||
extraSubjects := subjectSubtract(systemCertPoolSubjects, certPoolSubjects)
|
||||
func TestCertReloader(t *testing.T) {
|
||||
expectedCert, err := tls.LoadX509KeyPair("testcert.pem", "testkey.pem")
|
||||
assert.NoError(t, err)
|
||||
|
||||
// Remove extra subjects from the cert pool
|
||||
var filteredSystemCertPoolSubjects []*pkix.Name
|
||||
certReloader, err := NewCertReloader("testcert.pem", "testkey.pem")
|
||||
assert.NoError(t, err)
|
||||
|
||||
t.Log(extraSubjects)
|
||||
chi := &tls.ClientHelloInfo{ServerName: testcertCommonName}
|
||||
cert, err := certReloader.Cert(chi)
|
||||
assert.NoError(t, err)
|
||||
assert.Equal(t, expectedCert, *cert)
|
||||
|
||||
OUTER:
|
||||
for _, subject := range certPoolSubjects {
|
||||
for _, extraSubject := range extraSubjects {
|
||||
if subject == extraSubject {
|
||||
t.Log(extraSubject)
|
||||
continue OUTER
|
||||
}
|
||||
}
|
||||
|
||||
filteredSystemCertPoolSubjects = append(filteredSystemCertPoolSubjects, subject)
|
||||
c := &TLSParameters{
|
||||
GetCertificate: certReloader,
|
||||
}
|
||||
tlsConfig, err := GetConfig(c)
|
||||
assert.NoError(t, err)
|
||||
|
||||
assert.Equal(t, len(filteredSystemCertPoolSubjects), len(systemCertPoolSubjects))
|
||||
|
||||
difference := subjectSubtract(systemCertPoolSubjects, filteredSystemCertPoolSubjects)
|
||||
assert.Equal(t, 0, len(difference))
|
||||
}
|
||||
|
||||
func TestLoadOriginCertPoolCFCertificates(t *testing.T) {
|
||||
certPoolSubjects := loadCertPoolSubjects(t, nil)
|
||||
|
||||
extraSubjects := subjectSubtract(systemCertPoolSubjects, certPoolSubjects)
|
||||
|
||||
expected := []*certificateFixture{
|
||||
{ou: "CloudFlare Origin SSL ECC Certificate Authority"},
|
||||
{ou: "CloudFlare Origin SSL Certificate Authority"},
|
||||
{cn: "origin-pull.cloudflare.net"},
|
||||
{cn: "Argo Tunnel Sample Hello Server Certificate"},
|
||||
}
|
||||
|
||||
assertFixturesMatchSubjects(t, expected, extraSubjects)
|
||||
}
|
||||
|
||||
func TestLoadOriginCertPoolWithExtraPEMs(t *testing.T) {
|
||||
certPoolWithoutPEMSubjects := loadCertPoolSubjects(t, nil)
|
||||
certPoolWithPEMSubjects := loadCertPoolSubjects(t, samplePEM)
|
||||
|
||||
difference := subjectSubtract(certPoolWithoutPEMSubjects, certPoolWithPEMSubjects)
|
||||
|
||||
assert.Equal(t, 2, len(difference))
|
||||
|
||||
expected := []*certificateFixture{
|
||||
{cn: "Test One"},
|
||||
{cn: "Test Two"},
|
||||
}
|
||||
|
||||
assertFixturesMatchSubjects(t, expected, difference)
|
||||
}
|
||||
|
||||
func loadCertPoolSubjects(t *testing.T, originCAPoolPEM []byte) []*pkix.Name {
|
||||
certPool, err := LoadOriginCertPool(originCAPoolPEM)
|
||||
if isUnrecoverableError(err) {
|
||||
t.Fatal(err)
|
||||
}
|
||||
assert.NotEmpty(t, certPool.Subjects())
|
||||
certPoolSubjects, err := getCertPoolSubjects(certPool)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
return certPoolSubjects
|
||||
}
|
||||
|
||||
func assertFixturesMatchSubjects(t *testing.T, fixtures []*certificateFixture, subjects []*pkix.Name) {
|
||||
assert.Equal(t, len(fixtures), len(subjects))
|
||||
|
||||
for _, fixture := range fixtures {
|
||||
found := false
|
||||
for _, subject := range subjects {
|
||||
found = found || fixtureMatchesSubjectPredicate(fixture, subject)
|
||||
}
|
||||
|
||||
if !found {
|
||||
t.Fail()
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func fixtureMatchesSubjectPredicate(fixture *certificateFixture, subject *pkix.Name) bool {
|
||||
cnMatch := true
|
||||
if fixture.cn != "" {
|
||||
cnMatch = fixture.cn == subject.CommonName
|
||||
}
|
||||
|
||||
ouMatch := true
|
||||
if fixture.ou != "" {
|
||||
ouMatch = len(subject.OrganizationalUnit) > 0 && fixture.ou == subject.OrganizationalUnit[0]
|
||||
}
|
||||
|
||||
return cnMatch && ouMatch
|
||||
}
|
||||
|
||||
func subjectSubtract(left []*pkix.Name, right []*pkix.Name) []*pkix.Name {
|
||||
var difference []*pkix.Name
|
||||
|
||||
var found bool
|
||||
for _, r := range right {
|
||||
found = false
|
||||
for _, l := range left {
|
||||
if (*l).String() == (*r).String() {
|
||||
found = true
|
||||
}
|
||||
}
|
||||
|
||||
if !found {
|
||||
difference = append(difference, r)
|
||||
}
|
||||
}
|
||||
|
||||
return difference
|
||||
}
|
||||
|
||||
func getCertPoolSubjects(certPool *x509.CertPool) ([]*pkix.Name, error) {
|
||||
var subjects []*pkix.Name
|
||||
|
||||
for _, subject := range certPool.Subjects() {
|
||||
var sequence pkix.RDNSequence
|
||||
_, err := asn1.Unmarshal(subject, &sequence)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
name := pkix.Name{}
|
||||
name.FillFromRDNSequence(&sequence)
|
||||
|
||||
subjects = append(subjects, &name)
|
||||
}
|
||||
|
||||
return subjects, nil
|
||||
}
|
||||
|
||||
func isUnrecoverableError(err error) bool {
|
||||
return err != nil && err.Error() != "crypto/x509: system root pool is not available on Windows"
|
||||
cert, err = tlsConfig.GetCertificate(chi)
|
||||
assert.NoError(t, err)
|
||||
assert.Equal(t, expectedCert, *cert)
|
||||
}
|
||||
|
|
|
@ -2,18 +2,17 @@ package websocket
|
|||
|
||||
import (
|
||||
"crypto/tls"
|
||||
"crypto/x509"
|
||||
"io"
|
||||
"math/rand"
|
||||
"net/http"
|
||||
"testing"
|
||||
|
||||
"github.com/sirupsen/logrus"
|
||||
"github.com/stretchr/testify/assert"
|
||||
|
||||
"golang.org/x/net/websocket"
|
||||
|
||||
"github.com/cloudflare/cloudflared/hello"
|
||||
"github.com/cloudflare/cloudflared/tlsconfig"
|
||||
"github.com/sirupsen/logrus"
|
||||
"github.com/stretchr/testify/assert"
|
||||
"golang.org/x/net/websocket"
|
||||
)
|
||||
|
||||
const (
|
||||
|
@ -40,8 +39,10 @@ func testRequest(t *testing.T, url string, stream io.ReadWriter) *http.Request {
|
|||
}
|
||||
|
||||
func websocketClientTLSConfig(t *testing.T) *tls.Config {
|
||||
certPool, err := tlsconfig.LoadOriginCertPool(nil)
|
||||
certPool := x509.NewCertPool()
|
||||
helloCert, err := tlsconfig.GetHelloCertificateX509()
|
||||
assert.NoError(t, err)
|
||||
certPool.AddCert(helloCert)
|
||||
assert.NotNil(t, certPool)
|
||||
return &tls.Config{RootCAs: certPool}
|
||||
}
|
||||
|
|
Loading…
Reference in New Issue