kubernetes static_content 源码

kubernetes static_content 代码

文件路径：/staging/src/k8s.io/apiserver/pkg/server/dynamiccertificates/static_content.go

/*
Copyright 2019 The Kubernetes Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package dynamiccertificates

import (
	"crypto/tls"
	"crypto/x509"
)

type staticCAContent struct {
	name     string
	caBundle *caBundleAndVerifier
}

var _ CAContentProvider = &staticCAContent{}

// NewStaticCAContent returns a CAContentProvider that always returns the same value
func NewStaticCAContent(name string, caBundle []byte) (CAContentProvider, error) {
	caBundleAndVerifier, err := newCABundleAndVerifier(name, caBundle)
	if err != nil {
		return nil, err
	}

	return &staticCAContent{
		name:     name,
		caBundle: caBundleAndVerifier,
	}, nil
}

// Name is just an identifier
func (c *staticCAContent) Name() string {
	return c.name
}

func (c *staticCAContent) AddListener(Listener) {}

// CurrentCABundleContent provides ca bundle byte content
func (c *staticCAContent) CurrentCABundleContent() (cabundle []byte) {
	return c.caBundle.caBundle
}

func (c *staticCAContent) VerifyOptions() (x509.VerifyOptions, bool) {
	return c.caBundle.verifyOptions, true
}

type staticCertKeyContent struct {
	name string
	cert []byte
	key  []byte
}

// NewStaticCertKeyContent returns a CertKeyContentProvider that always returns the same value
func NewStaticCertKeyContent(name string, cert, key []byte) (CertKeyContentProvider, error) {
	// Ensure that the key matches the cert and both are valid
	_, err := tls.X509KeyPair(cert, key)
	if err != nil {
		return nil, err
	}

	return &staticCertKeyContent{
		name: name,
		cert: cert,
		key:  key,
	}, nil
}

// Name is just an identifier
func (c *staticCertKeyContent) Name() string {
	return c.name
}

func (c *staticCertKeyContent) AddListener(Listener) {}

// CurrentCertKeyContent provides cert and key content
func (c *staticCertKeyContent) CurrentCertKeyContent() ([]byte, []byte) {
	return c.cert, c.key
}

type staticSNICertKeyContent struct {
	staticCertKeyContent
	sniNames []string
}

// NewStaticSNICertKeyContent returns a SNICertKeyContentProvider that always returns the same value
func NewStaticSNICertKeyContent(name string, cert, key []byte, sniNames ...string) (SNICertKeyContentProvider, error) {
	// Ensure that the key matches the cert and both are valid
	_, err := tls.X509KeyPair(cert, key)
	if err != nil {
		return nil, err
	}

	return &staticSNICertKeyContent{
		staticCertKeyContent: staticCertKeyContent{
			name: name,
			cert: cert,
			key:  key,
		},
		sniNames: sniNames,
	}, nil
}

func (c *staticSNICertKeyContent) SNINames() []string {
	return c.sniNames
}

func (c *staticSNICertKeyContent) AddListener(Listener) {}

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