1 files changed, 0 insertions, 357 deletions
diff --git a/src/pkg/net/smtp/smtp.go b/src/pkg/net/smtp/smtp.go
deleted file mode 100644
index 87dea442c..000000000
--- a/src/pkg/net/smtp/smtp.go
+++ /dev/null
@@ -1,357 +0,0 @@
-// Copyright 2010 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.
-
-// Package smtp implements the Simple Mail Transfer Protocol as defined in RFC 5321.
-// It also implements the following extensions:
-//	8BITMIME  RFC 1652
-//	AUTH      RFC 2554
-//	STARTTLS  RFC 3207
-// Additional extensions may be handled by clients.
-package smtp
-
-import (
-	"crypto/tls"
-	"encoding/base64"
-	"errors"
-	"io"
-	"net"
-	"net/textproto"
-	"strings"
-)
-
-// A Client represents a client connection to an SMTP server.
-type Client struct {
-	// Text is the textproto.Conn used by the Client. It is exported to allow for
-	// clients to add extensions.
-	Text *textproto.Conn
-	// keep a reference to the connection so it can be used to create a TLS
-	// connection later
-	conn net.Conn
-	// whether the Client is using TLS
-	tls        bool
-	serverName string
-	// map of supported extensions
-	ext map[string]string
-	// supported auth mechanisms
-	auth       []string
-	localName  string // the name to use in HELO/EHLO
-	didHello   bool   // whether we've said HELO/EHLO
-	helloError error  // the error from the hello
-}
-
-// Dial returns a new Client connected to an SMTP server at addr.
-// The addr must include a port number.
-func Dial(addr string) (*Client, error) {
-	conn, err := net.Dial("tcp", addr)
-	if err != nil {
-		return nil, err
-	}
-	host, _, _ := net.SplitHostPort(addr)
-	return NewClient(conn, host)
-}
-
-// NewClient returns a new Client using an existing connection and host as a
-// server name to be used when authenticating.
-func NewClient(conn net.Conn, host string) (*Client, error) {
-	text := textproto.NewConn(conn)
-	_, _, err := text.ReadResponse(220)
-	if err != nil {
-		text.Close()
-		return nil, err
-	}
-	c := &Client{Text: text, conn: conn, serverName: host, localName: "localhost"}
-	return c, nil
-}
-
-// Close closes the connection.
-func (c *Client) Close() error {
-	return c.Text.Close()
-}
-
-// hello runs a hello exchange if needed.
-func (c *Client) hello() error {
-	if !c.didHello {
-		c.didHello = true
-		err := c.ehlo()
-		if err != nil {
-			c.helloError = c.helo()
-		}
-	}
-	return c.helloError
-}
-
-// Hello sends a HELO or EHLO to the server as the given host name.
-// Calling this method is only necessary if the client needs control
-// over the host name used.  The client will introduce itself as "localhost"
-// automatically otherwise.  If Hello is called, it must be called before
-// any of the other methods.
-func (c *Client) Hello(localName string) error {
-	if c.didHello {
-		return errors.New("smtp: Hello called after other methods")
-	}
-	c.localName = localName
-	return c.hello()
-}
-
-// cmd is a convenience function that sends a command and returns the response
-func (c *Client) cmd(expectCode int, format string, args ...interface{}) (int, string, error) {
-	id, err := c.Text.Cmd(format, args...)
-	if err != nil {
-		return 0, "", err
-	}
-	c.Text.StartResponse(id)
-	defer c.Text.EndResponse(id)
-	code, msg, err := c.Text.ReadResponse(expectCode)
-	return code, msg, err
-}
-
-// helo sends the HELO greeting to the server. It should be used only when the
-// server does not support ehlo.
-func (c *Client) helo() error {
-	c.ext = nil
-	_, _, err := c.cmd(250, "HELO %s", c.localName)
-	return err
-}
-
-// ehlo sends the EHLO (extended hello) greeting to the server. It
-// should be the preferred greeting for servers that support it.
-func (c *Client) ehlo() error {
-	_, msg, err := c.cmd(250, "EHLO %s", c.localName)
-	if err != nil {
-		return err
-	}
-	ext := make(map[string]string)
-	extList := strings.Split(msg, "\n")
-	if len(extList) > 1 {
-		extList = extList[1:]
-		for _, line := range extList {
-			args := strings.SplitN(line, " ", 2)
-			if len(args) > 1 {
-				ext[args[0]] = args[1]
-			} else {
-				ext[args[0]] = ""
-			}
-		}
-	}
-	if mechs, ok := ext["AUTH"]; ok {
-		c.auth = strings.Split(mechs, " ")
-	}
-	c.ext = ext
-	return err
-}
-
-// StartTLS sends the STARTTLS command and encrypts all further communication.
-// Only servers that advertise the STARTTLS extension support this function.
-func (c *Client) StartTLS(config *tls.Config) error {
-	if err := c.hello(); err != nil {
-		return err
-	}
-	_, _, err := c.cmd(220, "STARTTLS")
-	if err != nil {
-		return err
-	}
-	c.conn = tls.Client(c.conn, config)
-	c.Text = textproto.NewConn(c.conn)
-	c.tls = true
-	return c.ehlo()
-}
-
-// Verify checks the validity of an email address on the server.
-// If Verify returns nil, the address is valid. A non-nil return
-// does not necessarily indicate an invalid address. Many servers
-// will not verify addresses for security reasons.
-func (c *Client) Verify(addr string) error {
-	if err := c.hello(); err != nil {
-		return err
-	}
-	_, _, err := c.cmd(250, "VRFY %s", addr)
-	return err
-}
-
-// Auth authenticates a client using the provided authentication mechanism.
-// A failed authentication closes the connection.
-// Only servers that advertise the AUTH extension support this function.
-func (c *Client) Auth(a Auth) error {
-	if err := c.hello(); err != nil {
-		return err
-	}
-	encoding := base64.StdEncoding
-	mech, resp, err := a.Start(&ServerInfo{c.serverName, c.tls, c.auth})
-	if err != nil {
-		c.Quit()
-		return err
-	}
-	resp64 := make([]byte, encoding.EncodedLen(len(resp)))
-	encoding.Encode(resp64, resp)
-	code, msg64, err := c.cmd(0, "AUTH %s %s", mech, resp64)
-	for err == nil {
-		var msg []byte
-		switch code {
-		case 334:
-			msg, err = encoding.DecodeString(msg64)
-		case 235:
-			// the last message isn't base64 because it isn't a challenge
-			msg = []byte(msg64)
-		default:
-			err = &textproto.Error{Code: code, Msg: msg64}
-		}
-		if err == nil {
-			resp, err = a.Next(msg, code == 334)
-		}
-		if err != nil {
-			// abort the AUTH
-			c.cmd(501, "*")
-			c.Quit()
-			break
-		}
-		if resp == nil {
-			break
-		}
-		resp64 = make([]byte, encoding.EncodedLen(len(resp)))
-		encoding.Encode(resp64, resp)
-		code, msg64, err = c.cmd(0, string(resp64))
-	}
-	return err
-}
-
-// Mail issues a MAIL command to the server using the provided email address.
-// If the server supports the 8BITMIME extension, Mail adds the BODY=8BITMIME
-// parameter.
-// This initiates a mail transaction and is followed by one or more Rcpt calls.
-func (c *Client) Mail(from string) error {
-	if err := c.hello(); err != nil {
-		return err
-	}
-	cmdStr := "MAIL FROM:<%s>"
-	if c.ext != nil {
-		if _, ok := c.ext["8BITMIME"]; ok {
-			cmdStr += " BODY=8BITMIME"
-		}
-	}
-	_, _, err := c.cmd(250, cmdStr, from)
-	return err
-}
-
-// Rcpt issues a RCPT command to the server using the provided email address.
-// A call to Rcpt must be preceded by a call to Mail and may be followed by
-// a Data call or another Rcpt call.
-func (c *Client) Rcpt(to string) error {
-	_, _, err := c.cmd(25, "RCPT TO:<%s>", to)
-	return err
-}
-
-type dataCloser struct {
-	c *Client
-	io.WriteCloser
-}
-
-func (d *dataCloser) Close() error {
-	d.WriteCloser.Close()
-	_, _, err := d.c.Text.ReadResponse(250)
-	return err
-}
-
-// Data issues a DATA command to the server and returns a writer that
-// can be used to write the data. The caller should close the writer
-// before calling any more methods on c.
-// A call to Data must be preceded by one or more calls to Rcpt.
-func (c *Client) Data() (io.WriteCloser, error) {
-	_, _, err := c.cmd(354, "DATA")
-	if err != nil {
-		return nil, err
-	}
-	return &dataCloser{c, c.Text.DotWriter()}, nil
-}
-
-var testHookStartTLS func(*tls.Config) // nil, except for tests
-
-// SendMail connects to the server at addr, switches to TLS if
-// possible, authenticates with the optional mechanism a if possible,
-// and then sends an email from address from, to addresses to, with
-// message msg.
-func SendMail(addr string, a Auth, from string, to []string, msg []byte) error {
-	c, err := Dial(addr)
-	if err != nil {
-		return err
-	}
-	defer c.Close()
-	if err = c.hello(); err != nil {
-		return err
-	}
-	if ok, _ := c.Extension("STARTTLS"); ok {
-		config := &tls.Config{ServerName: c.serverName}
-		if testHookStartTLS != nil {
-			testHookStartTLS(config)
-		}
-		if err = c.StartTLS(config); err != nil {
-			return err
-		}
-	}
-	if a != nil && c.ext != nil {
-		if _, ok := c.ext["AUTH"]; ok {
-			if err = c.Auth(a); err != nil {
-				return err
-			}
-		}
-	}
-	if err = c.Mail(from); err != nil {
-		return err
-	}
-	for _, addr := range to {
-		if err = c.Rcpt(addr); err != nil {
-			return err
-		}
-	}
-	w, err := c.Data()
-	if err != nil {
-		return err
-	}
-	_, err = w.Write(msg)
-	if err != nil {
-		return err
-	}
-	err = w.Close()
-	if err != nil {
-		return err
-	}
-	return c.Quit()
-}
-
-// Extension reports whether an extension is support by the server.
-// The extension name is case-insensitive. If the extension is supported,
-// Extension also returns a string that contains any parameters the
-// server specifies for the extension.
-func (c *Client) Extension(ext string) (bool, string) {
-	if err := c.hello(); err != nil {
-		return false, ""
-	}
-	if c.ext == nil {
-		return false, ""
-	}
-	ext = strings.ToUpper(ext)
-	param, ok := c.ext[ext]
-	return ok, param
-}
-
-// Reset sends the RSET command to the server, aborting the current mail
-// transaction.
-func (c *Client) Reset() error {
-	if err := c.hello(); err != nil {
-		return err
-	}
-	_, _, err := c.cmd(250, "RSET")
-	return err
-}
-
-// Quit sends the QUIT command and closes the connection to the server.
-func (c *Client) Quit() error {
-	if err := c.hello(); err != nil {
-		return err
-	}
-	_, _, err := c.cmd(221, "QUIT")
-	if err != nil {
-		return err
-	}
-	return c.Text.Close()
-}