Golang x509.DefaultVerifyOptions函数代码示例

func NewSecure(clientCA string, proxyClientNames []string, nameHeaders []string) (authenticator.Request, error) {
	headerAuthenticator, err := New(nameHeaders)
	if err != nil {
		return nil, err
	}

	if len(clientCA) == 0 {
		return nil, fmt.Errorf("missing clientCA file")
	}

	// Wrap with an x509 verifier
	caData, err := ioutil.ReadFile(clientCA)
	if err != nil {
		return nil, fmt.Errorf("error reading %s: %v", clientCA, err)
	}
	opts := x509request.DefaultVerifyOptions()
	opts.Roots = x509.NewCertPool()
	certs, err := utilcert.ParseCertsPEM(caData)
	if err != nil {
		return nil, fmt.Errorf("error loading certs from  %s: %v", clientCA, err)
	}
	for _, cert := range certs {
		opts.Roots.AddCert(cert)
	}

	return x509request.NewVerifier(opts, headerAuthenticator, sets.NewString(proxyClientNames...)), nil
}

// newAuthenticatorFromClientCAFile returns an authenticator.Request or an error
func newAuthenticatorFromClientCAFile(clientCAFile string) (authenticator.Request, error) {
	roots, err := util.CertPoolFromFile(clientCAFile)
	if err != nil {
		return nil, err
	}

	opts := x509.DefaultVerifyOptions()
	opts.Roots = roots

	return x509.New(opts, x509.CommonNameUserConversion), nil
}

// newAuthenticatorFromClientCAFile returns an authenticator.Request or an error
func newAuthenticatorFromClientCAFile(clientCAFile string) (authenticator.Request, error) {
	opts := x509request.DefaultVerifyOptions()

	// If at custom CA bundle is provided, load it (otherwise just use system roots)
	if len(clientCAFile) > 0 {
		if caData, err := ioutil.ReadFile(clientCAFile); err != nil {
			return nil, err
		} else if len(caData) > 0 {
			roots := x509.NewCertPool()
			if !roots.AppendCertsFromPEM(caData) {
				return nil, fmt.Errorf("no valid certs found in %s", clientCAFile)
			}
			opts.Roots = roots
		}
	}

	return x509request.New(opts, x509request.CommonNameUserConversion), nil
}

func (c DelegatingAuthenticatorConfig) New() (authenticator.Request, *spec.SecurityDefinitions, error) {
	authenticators := []authenticator.Request{}
	securityDefinitions := spec.SecurityDefinitions{}

	// front-proxy first, then remote
	// Add the front proxy authenticator if requested
	if c.RequestHeaderConfig != nil {
		requestHeaderAuthenticator, err := headerrequest.NewSecure(
			c.RequestHeaderConfig.ClientCA,
			c.RequestHeaderConfig.AllowedClientNames,
			c.RequestHeaderConfig.UsernameHeaders,
			c.RequestHeaderConfig.GroupHeaders,
			c.RequestHeaderConfig.ExtraHeaderPrefixes,
		)
		if err != nil {
			return nil, nil, err
		}
		authenticators = append(authenticators, requestHeaderAuthenticator)
	}

	// x509 client cert auth
	if len(c.ClientCAFile) > 0 {
		clientCAs, err := cert.NewPool(c.ClientCAFile)
		if err != nil {
			return nil, nil, fmt.Errorf("unable to load client CA file %s: %v", c.ClientCAFile, err)
		}
		verifyOpts := x509.DefaultVerifyOptions()
		verifyOpts.Roots = clientCAs
		authenticators = append(authenticators, x509.New(verifyOpts, x509.CommonNameUserConversion))
	}

	if c.TokenAccessReviewClient != nil {
		tokenAuth, err := webhooktoken.NewFromInterface(c.TokenAccessReviewClient, c.CacheTTL)
		if err != nil {
			return nil, nil, err
		}
		authenticators = append(authenticators, bearertoken.New(tokenAuth))

		securityDefinitions["BearerToken"] = &spec.SecurityScheme{
			SecuritySchemeProps: spec.SecuritySchemeProps{
				Type:        "apiKey",
				Name:        "authorization",
				In:          "header",
				Description: "Bearer Token authentication",
			},
		}
	}

	if len(authenticators) == 0 {
		if c.Anonymous {
			return anonymous.NewAuthenticator(), &securityDefinitions, nil
		}
		return nil, nil, errors.New("No authentication method configured")
	}

	authenticator := group.NewGroupAdder(unionauth.New(authenticators...), []string{user.AllAuthenticated})
	if c.Anonymous {
		authenticator = unionauth.NewFailOnError(authenticator, anonymous.NewAuthenticator())
	}
	return authenticator, &securityDefinitions, nil
}