1 files changed, 0 insertions, 278 deletions
diff --git a/vendor/golang.org/x/crypto/ssh/client.go b/vendor/golang.org/x/crypto/ssh/client.go
deleted file mode 100644
index ae6ca77..0000000
--- a/vendor/golang.org/x/crypto/ssh/client.go
+++ /dev/null
@@ -1,278 +0,0 @@
-// Copyright 2011 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 ssh
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"net"
-	"os"
-	"sync"
-	"time"
-)
-
-// Client implements a traditional SSH client that supports shells,
-// subprocesses, TCP port/streamlocal forwarding and tunneled dialing.
-type Client struct {
-	Conn
-
-	handleForwardsOnce sync.Once // guards calling (*Client).handleForwards
-
-	forwards        forwardList // forwarded tcpip connections from the remote side
-	mu              sync.Mutex
-	channelHandlers map[string]chan NewChannel
-}
-
-// HandleChannelOpen returns a channel on which NewChannel requests
-// for the given type are sent. If the type already is being handled,
-// nil is returned. The channel is closed when the connection is closed.
-func (c *Client) HandleChannelOpen(channelType string) <-chan NewChannel {
-	c.mu.Lock()
-	defer c.mu.Unlock()
-	if c.channelHandlers == nil {
-		// The SSH channel has been closed.
-		c := make(chan NewChannel)
-		close(c)
-		return c
-	}
-
-	ch := c.channelHandlers[channelType]
-	if ch != nil {
-		return nil
-	}
-
-	ch = make(chan NewChannel, chanSize)
-	c.channelHandlers[channelType] = ch
-	return ch
-}
-
-// NewClient creates a Client on top of the given connection.
-func NewClient(c Conn, chans <-chan NewChannel, reqs <-chan *Request) *Client {
-	conn := &Client{
-		Conn:            c,
-		channelHandlers: make(map[string]chan NewChannel, 1),
-	}
-
-	go conn.handleGlobalRequests(reqs)
-	go conn.handleChannelOpens(chans)
-	go func() {
-		conn.Wait()
-		conn.forwards.closeAll()
-	}()
-	return conn
-}
-
-// NewClientConn establishes an authenticated SSH connection using c
-// as the underlying transport.  The Request and NewChannel channels
-// must be serviced or the connection will hang.
-func NewClientConn(c net.Conn, addr string, config *ClientConfig) (Conn, <-chan NewChannel, <-chan *Request, error) {
-	fullConf := *config
-	fullConf.SetDefaults()
-	if fullConf.HostKeyCallback == nil {
-		c.Close()
-		return nil, nil, nil, errors.New("ssh: must specify HostKeyCallback")
-	}
-
-	conn := &connection{
-		sshConn: sshConn{conn: c},
-	}
-
-	if err := conn.clientHandshake(addr, &fullConf); err != nil {
-		c.Close()
-		return nil, nil, nil, fmt.Errorf("ssh: handshake failed: %v", err)
-	}
-	conn.mux = newMux(conn.transport)
-	return conn, conn.mux.incomingChannels, conn.mux.incomingRequests, nil
-}
-
-// clientHandshake performs the client side key exchange. See RFC 4253 Section
-// 7.
-func (c *connection) clientHandshake(dialAddress string, config *ClientConfig) error {
-	if config.ClientVersion != "" {
-		c.clientVersion = []byte(config.ClientVersion)
-	} else {
-		c.clientVersion = []byte(packageVersion)
-	}
-	var err error
-	c.serverVersion, err = exchangeVersions(c.sshConn.conn, c.clientVersion)
-	if err != nil {
-		return err
-	}
-
-	c.transport = newClientTransport(
-		newTransport(c.sshConn.conn, config.Rand, true /* is client */),
-		c.clientVersion, c.serverVersion, config, dialAddress, c.sshConn.RemoteAddr())
-	if err := c.transport.waitSession(); err != nil {
-		return err
-	}
-
-	c.sessionID = c.transport.getSessionID()
-	return c.clientAuthenticate(config)
-}
-
-// verifyHostKeySignature verifies the host key obtained in the key
-// exchange.
-func verifyHostKeySignature(hostKey PublicKey, result *kexResult) error {
-	sig, rest, ok := parseSignatureBody(result.Signature)
-	if len(rest) > 0 || !ok {
-		return errors.New("ssh: signature parse error")
-	}
-
-	return hostKey.Verify(result.H, sig)
-}
-
-// NewSession opens a new Session for this client. (A session is a remote
-// execution of a program.)
-func (c *Client) NewSession() (*Session, error) {
-	ch, in, err := c.OpenChannel("session", nil)
-	if err != nil {
-		return nil, err
-	}
-	return newSession(ch, in)
-}
-
-func (c *Client) handleGlobalRequests(incoming <-chan *Request) {
-	for r := range incoming {
-		// This handles keepalive messages and matches
-		// the behaviour of OpenSSH.
-		r.Reply(false, nil)
-	}
-}
-
-// handleChannelOpens channel open messages from the remote side.
-func (c *Client) handleChannelOpens(in <-chan NewChannel) {
-	for ch := range in {
-		c.mu.Lock()
-		handler := c.channelHandlers[ch.ChannelType()]
-		c.mu.Unlock()
-
-		if handler != nil {
-			handler <- ch
-		} else {
-			ch.Reject(UnknownChannelType, fmt.Sprintf("unknown channel type: %v", ch.ChannelType()))
-		}
-	}
-
-	c.mu.Lock()
-	for _, ch := range c.channelHandlers {
-		close(ch)
-	}
-	c.channelHandlers = nil
-	c.mu.Unlock()
-}
-
-// Dial starts a client connection to the given SSH server. It is a
-// convenience function that connects to the given network address,
-// initiates the SSH handshake, and then sets up a Client.  For access
-// to incoming channels and requests, use net.Dial with NewClientConn
-// instead.
-func Dial(network, addr string, config *ClientConfig) (*Client, error) {
-	conn, err := net.DialTimeout(network, addr, config.Timeout)
-	if err != nil {
-		return nil, err
-	}
-	c, chans, reqs, err := NewClientConn(conn, addr, config)
-	if err != nil {
-		return nil, err
-	}
-	return NewClient(c, chans, reqs), nil
-}
-
-// HostKeyCallback is the function type used for verifying server
-// keys.  A HostKeyCallback must return nil if the host key is OK, or
-// an error to reject it. It receives the hostname as passed to Dial
-// or NewClientConn. The remote address is the RemoteAddr of the
-// net.Conn underlying the the SSH connection.
-type HostKeyCallback func(hostname string, remote net.Addr, key PublicKey) error
-
-// BannerCallback is the function type used for treat the banner sent by
-// the server. A BannerCallback receives the message sent by the remote server.
-type BannerCallback func(message string) error
-
-// A ClientConfig structure is used to configure a Client. It must not be
-// modified after having been passed to an SSH function.
-type ClientConfig struct {
-	// Config contains configuration that is shared between clients and
-	// servers.
-	Config
-
-	// User contains the username to authenticate as.
-	User string
-
-	// Auth contains possible authentication methods to use with the
-	// server. Only the first instance of a particular RFC 4252 method will
-	// be used during authentication.
-	Auth []AuthMethod
-
-	// HostKeyCallback is called during the cryptographic
-	// handshake to validate the server's host key. The client
-	// configuration must supply this callback for the connection
-	// to succeed. The functions InsecureIgnoreHostKey or
-	// FixedHostKey can be used for simplistic host key checks.
-	HostKeyCallback HostKeyCallback
-
-	// BannerCallback is called during the SSH dance to display a custom
-	// server's message. The client configuration can supply this callback to
-	// handle it as wished. The function BannerDisplayStderr can be used for
-	// simplistic display on Stderr.
-	BannerCallback BannerCallback
-
-	// ClientVersion contains the version identification string that will
-	// be used for the connection. If empty, a reasonable default is used.
-	ClientVersion string
-
-	// HostKeyAlgorithms lists the key types that the client will
-	// accept from the server as host key, in order of
-	// preference. If empty, a reasonable default is used. Any
-	// string returned from PublicKey.Type method may be used, or
-	// any of the CertAlgoXxxx and KeyAlgoXxxx constants.
-	HostKeyAlgorithms []string
-
-	// Timeout is the maximum amount of time for the TCP connection to establish.
-	//
-	// A Timeout of zero means no timeout.
-	Timeout time.Duration
-}
-
-// InsecureIgnoreHostKey returns a function that can be used for
-// ClientConfig.HostKeyCallback to accept any host key. It should
-// not be used for production code.
-func InsecureIgnoreHostKey() HostKeyCallback {
-	return func(hostname string, remote net.Addr, key PublicKey) error {
-		return nil
-	}
-}
-
-type fixedHostKey struct {
-	key PublicKey
-}
-
-func (f *fixedHostKey) check(hostname string, remote net.Addr, key PublicKey) error {
-	if f.key == nil {
-		return fmt.Errorf("ssh: required host key was nil")
-	}
-	if !bytes.Equal(key.Marshal(), f.key.Marshal()) {
-		return fmt.Errorf("ssh: host key mismatch")
-	}
-	return nil
-}
-
-// FixedHostKey returns a function for use in
-// ClientConfig.HostKeyCallback to accept only a specific host key.
-func FixedHostKey(key PublicKey) HostKeyCallback {
-	hk := &fixedHostKey{key}
-	return hk.check
-}
-
-// BannerDisplayStderr returns a function that can be used for
-// ClientConfig.BannerCallback to display banners on os.Stderr.
-func BannerDisplayStderr() BannerCallback {
-	return func(banner string) error {
-		_, err := os.Stderr.WriteString(banner)
-
-		return err
-	}
-}