1 files changed, 167 insertions, 0 deletions
diff --git a/libgo/go/crypto/tls/tls.go b/libgo/go/crypto/tls/tls.go
new file mode 100644
index 000000000..b11d3225d
--- /dev/null
+++ b/libgo/go/crypto/tls/tls.go
@@ -0,0 +1,167 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This package partially implements the TLS 1.1 protocol, as specified in RFC 4346.
+package tls
+
+import (
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/pem"
+	"io/ioutil"
+	"net"
+	"os"
+	"strings"
+)
+
+// Server returns a new TLS server side connection
+// using conn as the underlying transport.
+// The configuration config must be non-nil and must have
+// at least one certificate.
+func Server(conn net.Conn, config *Config) *Conn {
+	return &Conn{conn: conn, config: config}
+}
+
+// Client returns a new TLS client side connection
+// using conn as the underlying transport.
+// Client interprets a nil configuration as equivalent to
+// the zero configuration; see the documentation of Config
+// for the defaults.
+func Client(conn net.Conn, config *Config) *Conn {
+	return &Conn{conn: conn, config: config, isClient: true}
+}
+
+// A Listener implements a network listener (net.Listener) for TLS connections.
+type Listener struct {
+	listener net.Listener
+	config   *Config
+}
+
+// Accept waits for and returns the next incoming TLS connection.
+// The returned connection c is a *tls.Conn.
+func (l *Listener) Accept() (c net.Conn, err os.Error) {
+	c, err = l.listener.Accept()
+	if err != nil {
+		return
+	}
+	c = Server(c, l.config)
+	return
+}
+
+// Close closes the listener.
+func (l *Listener) Close() os.Error { return l.listener.Close() }
+
+// Addr returns the listener's network address.
+func (l *Listener) Addr() net.Addr { return l.listener.Addr() }
+
+// NewListener creates a Listener which accepts connections from an inner
+// Listener and wraps each connection with Server.
+// The configuration config must be non-nil and must have
+// at least one certificate.
+func NewListener(listener net.Listener, config *Config) (l *Listener) {
+	l = new(Listener)
+	l.listener = listener
+	l.config = config
+	return
+}
+
+// Listen creates a TLS listener accepting connections on the
+// given network address using net.Listen.
+// The configuration config must be non-nil and must have
+// at least one certificate.
+func Listen(network, laddr string, config *Config) (*Listener, os.Error) {
+	if config == nil || len(config.Certificates) == 0 {
+		return nil, os.NewError("tls.Listen: no certificates in configuration")
+	}
+	l, err := net.Listen(network, laddr)
+	if err != nil {
+		return nil, err
+	}
+	return NewListener(l, config), nil
+}
+
+// Dial connects to the given network address using net.Dial
+// and then initiates a TLS handshake, returning the resulting
+// TLS connection.
+// Dial interprets a nil configuration as equivalent to
+// the zero configuration; see the documentation of Config
+// for the defaults.
+func Dial(network, laddr, raddr string, config *Config) (*Conn, os.Error) {
+	c, err := net.Dial(network, laddr, raddr)
+	if err != nil {
+		return nil, err
+	}
+
+	colonPos := strings.LastIndex(raddr, ":")
+	if colonPos == -1 {
+		colonPos = len(raddr)
+	}
+	hostname := raddr[:colonPos]
+
+	if config == nil {
+		config = defaultConfig()
+	}
+	if config.ServerName != "" {
+		// Make a copy to avoid polluting argument or default.
+		c := *config
+		c.ServerName = hostname
+		config = &c
+	}
+	conn := Client(c, config)
+	if err = conn.Handshake(); err != nil {
+		c.Close()
+		return nil, err
+	}
+	return conn, nil
+}
+
+// LoadX509KeyPair reads and parses a public/private key pair from a pair of
+// files. The files must contain PEM encoded data.
+func LoadX509KeyPair(certFile string, keyFile string) (cert Certificate, err os.Error) {
+	certPEMBlock, err := ioutil.ReadFile(certFile)
+	if err != nil {
+		return
+	}
+
+	certDERBlock, _ := pem.Decode(certPEMBlock)
+	if certDERBlock == nil {
+		err = os.ErrorString("crypto/tls: failed to parse certificate PEM data")
+		return
+	}
+
+	cert.Certificate = [][]byte{certDERBlock.Bytes}
+
+	keyPEMBlock, err := ioutil.ReadFile(keyFile)
+	if err != nil {
+		return
+	}
+
+	keyDERBlock, _ := pem.Decode(keyPEMBlock)
+	if keyDERBlock == nil {
+		err = os.ErrorString("crypto/tls: failed to parse key PEM data")
+		return
+	}
+
+	key, err := x509.ParsePKCS1PrivateKey(keyDERBlock.Bytes)
+	if err != nil {
+		err = os.ErrorString("crypto/tls: failed to parse key")
+		return
+	}
+
+	cert.PrivateKey = key
+
+	// We don't need to parse the public key for TLS, but we so do anyway
+	// to check that it looks sane and matches the private key.
+	x509Cert, err := x509.ParseCertificate(certDERBlock.Bytes)
+	if err != nil {
+		return
+	}
+
+	if x509Cert.PublicKeyAlgorithm != x509.RSA || x509Cert.PublicKey.(*rsa.PublicKey).N.Cmp(key.PublicKey.N) != 0 {
+		err = os.ErrorString("crypto/tls: private key does not match public key")
+		return
+	}
+
+	return
+}