128 lines
3.1 KiB
Go
128 lines
3.1 KiB
Go
// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// This package partially implements the TLS 1.1 protocol, as specified in RFC 4346.
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package tls
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import (
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"io/ioutil"
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"net"
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"os"
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"encoding/pem"
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"crypto/rsa"
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"crypto/x509"
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)
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func Server(conn net.Conn, config *Config) *Conn {
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return &Conn{conn: conn, config: config}
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}
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func Client(conn net.Conn, config *Config) *Conn {
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return &Conn{conn: conn, config: config, isClient: true}
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}
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type Listener struct {
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listener net.Listener
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config *Config
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}
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func (l *Listener) Accept() (c net.Conn, err os.Error) {
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c, err = l.listener.Accept()
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if err != nil {
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return
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}
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c = Server(c, l.config)
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return
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}
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func (l *Listener) Close() os.Error { return l.listener.Close() }
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func (l *Listener) Addr() net.Addr { return l.listener.Addr() }
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// NewListener creates a Listener which accepts connections from an inner
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// Listener and wraps each connection with Server.
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// The configuration config must be non-nil and must have
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// at least one certificate.
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func NewListener(listener net.Listener, config *Config) (l *Listener) {
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l = new(Listener)
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l.listener = listener
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l.config = config
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return
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}
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func Listen(network, laddr string, config *Config) (net.Listener, os.Error) {
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if config == nil || len(config.Certificates) == 0 {
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return nil, os.NewError("tls.Listen: no certificates in configuration")
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}
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l, err := net.Listen(network, laddr)
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if err != nil {
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return nil, err
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}
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return NewListener(l, config), nil
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}
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func Dial(network, laddr, raddr string) (net.Conn, os.Error) {
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c, err := net.Dial(network, laddr, raddr)
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if err != nil {
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return nil, err
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}
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conn := Client(c, nil)
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err = conn.Handshake()
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if err == nil {
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return conn, nil
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}
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c.Close()
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return nil, err
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}
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// LoadX509KeyPair reads and parses a public/private key pair from a pair of
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// files. The files must contain PEM encoded data.
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func LoadX509KeyPair(certFile string, keyFile string) (cert Certificate, err os.Error) {
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certPEMBlock, err := ioutil.ReadFile(certFile)
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if err != nil {
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return
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}
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certDERBlock, _ := pem.Decode(certPEMBlock)
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if certDERBlock == nil {
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err = os.ErrorString("crypto/tls: failed to parse certificate PEM data")
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return
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}
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cert.Certificate = [][]byte{certDERBlock.Bytes}
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keyPEMBlock, err := ioutil.ReadFile(keyFile)
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if err != nil {
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return
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}
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keyDERBlock, _ := pem.Decode(keyPEMBlock)
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if keyDERBlock == nil {
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err = os.ErrorString("crypto/tls: failed to parse key PEM data")
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return
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}
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key, err := x509.ParsePKCS1PrivateKey(keyDERBlock.Bytes)
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if err != nil {
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err = os.ErrorString("crypto/tls: failed to parse key")
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return
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}
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cert.PrivateKey = key
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// We don't need to parse the public key for TLS, but we so do anyway
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// to check that it looks sane and matches the private key.
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x509Cert, err := x509.ParseCertificate(certDERBlock.Bytes)
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if err != nil {
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return
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}
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if x509Cert.PublicKeyAlgorithm != x509.RSA || x509Cert.PublicKey.(*rsa.PublicKey).N.Cmp(key.PublicKey.N) != 0 {
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err = os.ErrorString("crypto/tls: private key does not match public key")
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return
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}
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return
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}
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