mirror of https://gitee.com/IrisVega/frp.git
137 lines
3.0 KiB
Go
137 lines
3.0 KiB
Go
package transport
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import (
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"crypto/rand"
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"crypto/rsa"
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"crypto/tls"
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"crypto/x509"
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"encoding/pem"
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"io/ioutil"
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"math/big"
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)
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/*
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Example for self-signed certificates by openssl:
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Self CA:
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openssl genrsa -out ca.key 2048
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openssl req -x509 -new -nodes -key ca.key -subj "/CN=example.ca.com" -days 5000 -out ca.crt
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Server:
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openssl genrsa -out server.key 2048
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openssl req -new -key server.key -subj "/CN=example.server.com" -out server.csr
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openssl x509 -req -in server.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out server.crt -days 5000
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Client:
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openssl genrsa -out client.key 2048
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openssl req -new -key client.key -subj "/CN=example.client.com" -out client.csr
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openssl x509 -req -in client.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out client.crt -days 5000
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*/
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func newCustomTLSKeyPair(certfile, keyfile string) (*tls.Certificate, error) {
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tlsCert, err := tls.LoadX509KeyPair(certfile, keyfile)
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if err != nil {
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return nil, err
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}
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return &tlsCert, nil
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}
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func newRandomTLSKeyPair() *tls.Certificate {
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key, err := rsa.GenerateKey(rand.Reader, 1024)
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if err != nil {
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panic(err)
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}
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template := x509.Certificate{SerialNumber: big.NewInt(1)}
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certDER, err := x509.CreateCertificate(
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rand.Reader,
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&template,
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&template,
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&key.PublicKey,
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key)
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if err != nil {
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panic(err)
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}
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keyPEM := pem.EncodeToMemory(&pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(key)})
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certPEM := pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: certDER})
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tlsCert, err := tls.X509KeyPair(certPEM, keyPEM)
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if err != nil {
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panic(err)
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}
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return &tlsCert
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}
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// Only supprt one ca file to add
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func newCertPool(caPath string) (*x509.CertPool, error) {
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pool := x509.NewCertPool()
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caCrt, err := ioutil.ReadFile(caPath)
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if err != nil {
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return nil, err
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}
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pool.AppendCertsFromPEM(caCrt)
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return pool, nil
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}
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func NewServerTLSConfig(certPath, keyPath, caPath string) (*tls.Config, error) {
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var base = &tls.Config{}
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if certPath == "" || keyPath == "" {
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// server will generate tls conf by itself
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cert := newRandomTLSKeyPair()
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base.Certificates = []tls.Certificate{*cert}
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} else {
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cert, err := newCustomTLSKeyPair(certPath, keyPath)
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if err != nil {
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return nil, err
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}
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base.Certificates = []tls.Certificate{*cert}
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}
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if caPath != "" {
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pool, err := newCertPool(caPath)
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if err != nil {
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return nil, err
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}
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base.ClientAuth = tls.RequireAndVerifyClientCert
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base.ClientCAs = pool
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}
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return base, nil
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}
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func NewClientTLSConfig(certPath, keyPath, caPath, servearName string) (*tls.Config, error) {
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var base = &tls.Config{}
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if certPath == "" || keyPath == "" {
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// client will not generate tls conf by itself
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} else {
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cert, err := newCustomTLSKeyPair(certPath, keyPath)
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if err != nil {
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return nil, err
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}
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base.Certificates = []tls.Certificate{*cert}
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}
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if caPath != "" {
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pool, err := newCertPool(caPath)
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if err != nil {
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return nil, err
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}
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base.RootCAs = pool
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base.ServerName = servearName
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base.InsecureSkipVerify = false
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} else {
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base.InsecureSkipVerify = true
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}
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return base, nil
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}
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