switch to go.mod

9 files changed, 146 insertions, 529 deletions

diff --git a/vendor/golang.org/x/crypto/ssh/terminal/terminal.go b/vendor/golang.org/x/crypto/ssh/terminal/terminal.go
index 18379a9..2f04ee5 100644
--- a/vendor/golang.org/x/crypto/ssh/terminal/terminal.go
+++ b/vendor/golang.org/x/crypto/ssh/terminal/terminal.go
@@ -7,6 +7,7 @@ package terminal
 import (
 	"bytes"
 	"io"
+	"strconv"
 	"sync"
 	"unicode/utf8"
 )
@@ -159,6 +160,10 @@ func bytesToKey(b []byte, pasteActive bool) (rune, []byte) {
 			return keyClearScreen, b[1:]
 		case 23: // ^W
 			return keyDeleteWord, b[1:]
+		case 14: // ^N
+			return keyDown, b[1:]
+		case 16: // ^P
+			return keyUp, b[1:]
 		}
 	}
 
@@ -267,34 +272,44 @@ func (t *Terminal) moveCursorToPos(pos int) {
 }
 
 func (t *Terminal) move(up, down, left, right int) {
-	movement := make([]rune, 3*(up+down+left+right))
-	m := movement
-	for i := 0; i < up; i++ {
-		m[0] = keyEscape
-		m[1] = '['
-		m[2] = 'A'
-		m = m[3:]
+	m := []rune{}
+
+	// 1 unit up can be expressed as ^[[A or ^[A
+	// 5 units up can be expressed as ^[[5A
+
+	if up == 1 {
+		m = append(m, keyEscape, '[', 'A')
+	} else if up > 1 {
+		m = append(m, keyEscape, '[')
+		m = append(m, []rune(strconv.Itoa(up))...)
+		m = append(m, 'A')
 	}
-	for i := 0; i < down; i++ {
-		m[0] = keyEscape
-		m[1] = '['
-		m[2] = 'B'
-		m = m[3:]
+
+	if down == 1 {
+		m = append(m, keyEscape, '[', 'B')
+	} else if down > 1 {
+		m = append(m, keyEscape, '[')
+		m = append(m, []rune(strconv.Itoa(down))...)
+		m = append(m, 'B')
 	}
-	for i := 0; i < left; i++ {
-		m[0] = keyEscape
-		m[1] = '['
-		m[2] = 'D'
-		m = m[3:]
+
+	if right == 1 {
+		m = append(m, keyEscape, '[', 'C')
+	} else if right > 1 {
+		m = append(m, keyEscape, '[')
+		m = append(m, []rune(strconv.Itoa(right))...)
+		m = append(m, 'C')
 	}
-	for i := 0; i < right; i++ {
-		m[0] = keyEscape
-		m[1] = '['
-		m[2] = 'C'
-		m = m[3:]
+
+	if left == 1 {
+		m = append(m, keyEscape, '[', 'D')
+	} else if left > 1 {
+		m = append(m, keyEscape, '[')
+		m = append(m, []rune(strconv.Itoa(left))...)
+		m = append(m, 'D')
 	}
 
-	t.queue(movement)
+	t.queue(m)
 }
 
 func (t *Terminal) clearLineToRight() {
@@ -617,7 +632,7 @@ func writeWithCRLF(w io.Writer, buf []byte) (n int, err error) {
 			if _, err = w.Write(crlf); err != nil {
 				return n, err
 			}
-			n += 1
+			n++
 			buf = buf[1:]
 		}
 	}
diff --git a/vendor/golang.org/x/crypto/ssh/terminal/terminal_test.go b/vendor/golang.org/x/crypto/ssh/terminal/terminal_test.go
deleted file mode 100644
index 901c72a..0000000
--- a/vendor/golang.org/x/crypto/ssh/terminal/terminal_test.go
+++ /dev/null
@@ -1,350 +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 terminal
-
-import (
-	"bytes"
-	"io"
-	"os"
-	"testing"
-)
-
-type MockTerminal struct {
-	toSend       []byte
-	bytesPerRead int
-	received     []byte
-}
-
-func (c *MockTerminal) Read(data []byte) (n int, err error) {
-	n = len(data)
-	if n == 0 {
-		return
-	}
-	if n > len(c.toSend) {
-		n = len(c.toSend)
-	}
-	if n == 0 {
-		return 0, io.EOF
-	}
-	if c.bytesPerRead > 0 && n > c.bytesPerRead {
-		n = c.bytesPerRead
-	}
-	copy(data, c.toSend[:n])
-	c.toSend = c.toSend[n:]
-	return
-}
-
-func (c *MockTerminal) Write(data []byte) (n int, err error) {
-	c.received = append(c.received, data...)
-	return len(data), nil
-}
-
-func TestClose(t *testing.T) {
-	c := &MockTerminal{}
-	ss := NewTerminal(c, "> ")
-	line, err := ss.ReadLine()
-	if line != "" {
-		t.Errorf("Expected empty line but got: %s", line)
-	}
-	if err != io.EOF {
-		t.Errorf("Error should have been EOF but got: %s", err)
-	}
-}
-
-var keyPressTests = []struct {
-	in             string
-	line           string
-	err            error
-	throwAwayLines int
-}{
-	{
-		err: io.EOF,
-	},
-	{
-		in:   "\r",
-		line: "",
-	},
-	{
-		in:   "foo\r",
-		line: "foo",
-	},
-	{
-		in:   "a\x1b[Cb\r", // right
-		line: "ab",
-	},
-	{
-		in:   "a\x1b[Db\r", // left
-		line: "ba",
-	},
-	{
-		in:   "a\177b\r", // backspace
-		line: "b",
-	},
-	{
-		in: "\x1b[A\r", // up
-	},
-	{
-		in: "\x1b[B\r", // down
-	},
-	{
-		in:   "line\x1b[A\x1b[B\r", // up then down
-		line: "line",
-	},
-	{
-		in:             "line1\rline2\x1b[A\r", // recall previous line.
-		line:           "line1",
-		throwAwayLines: 1,
-	},
-	{
-		// recall two previous lines and append.
-		in:             "line1\rline2\rline3\x1b[A\x1b[Axxx\r",
-		line:           "line1xxx",
-		throwAwayLines: 2,
-	},
-	{
-		// Ctrl-A to move to beginning of line followed by ^K to kill
-		// line.
-		in:   "a b \001\013\r",
-		line: "",
-	},
-	{
-		// Ctrl-A to move to beginning of line, Ctrl-E to move to end,
-		// finally ^K to kill nothing.
-		in:   "a b \001\005\013\r",
-		line: "a b ",
-	},
-	{
-		in:   "\027\r",
-		line: "",
-	},
-	{
-		in:   "a\027\r",
-		line: "",
-	},
-	{
-		in:   "a \027\r",
-		line: "",
-	},
-	{
-		in:   "a b\027\r",
-		line: "a ",
-	},
-	{
-		in:   "a b \027\r",
-		line: "a ",
-	},
-	{
-		in:   "one two thr\x1b[D\027\r",
-		line: "one two r",
-	},
-	{
-		in:   "\013\r",
-		line: "",
-	},
-	{
-		in:   "a\013\r",
-		line: "a",
-	},
-	{
-		in:   "ab\x1b[D\013\r",
-		line: "a",
-	},
-	{
-		in:   "Ξεσκεπάζω\r",
-		line: "Ξεσκεπάζω",
-	},
-	{
-		in:             "£\r\x1b[A\177\r", // non-ASCII char, enter, up, backspace.
-		line:           "",
-		throwAwayLines: 1,
-	},
-	{
-		in:             "£\r££\x1b[A\x1b[B\177\r", // non-ASCII char, enter, 2x non-ASCII, up, down, backspace, enter.
-		line:           "£",
-		throwAwayLines: 1,
-	},
-	{
-		// Ctrl-D at the end of the line should be ignored.
-		in:   "a\004\r",
-		line: "a",
-	},
-	{
-		// a, b, left, Ctrl-D should erase the b.
-		in:   "ab\x1b[D\004\r",
-		line: "a",
-	},
-	{
-		// a, b, c, d, left, left, ^U should erase to the beginning of
-		// the line.
-		in:   "abcd\x1b[D\x1b[D\025\r",
-		line: "cd",
-	},
-	{
-		// Bracketed paste mode: control sequences should be returned
-		// verbatim in paste mode.
-		in:   "abc\x1b[200~de\177f\x1b[201~\177\r",
-		line: "abcde\177",
-	},
-	{
-		// Enter in bracketed paste mode should still work.
-		in:             "abc\x1b[200~d\refg\x1b[201~h\r",
-		line:           "efgh",
-		throwAwayLines: 1,
-	},
-	{
-		// Lines consisting entirely of pasted data should be indicated as such.
-		in:   "\x1b[200~a\r",
-		line: "a",
-		err:  ErrPasteIndicator,
-	},
-}
-
-func TestKeyPresses(t *testing.T) {
-	for i, test := range keyPressTests {
-		for j := 1; j < len(test.in); j++ {
-			c := &MockTerminal{
-				toSend:       []byte(test.in),
-				bytesPerRead: j,
-			}
-			ss := NewTerminal(c, "> ")
-			for k := 0; k < test.throwAwayLines; k++ {
-				_, err := ss.ReadLine()
-				if err != nil {
-					t.Errorf("Throwaway line %d from test %d resulted in error: %s", k, i, err)
-				}
-			}
-			line, err := ss.ReadLine()
-			if line != test.line {
-				t.Errorf("Line resulting from test %d (%d bytes per read) was '%s', expected '%s'", i, j, line, test.line)
-				break
-			}
-			if err != test.err {
-				t.Errorf("Error resulting from test %d (%d bytes per read) was '%v', expected '%v'", i, j, err, test.err)
-				break
-			}
-		}
-	}
-}
-
-func TestPasswordNotSaved(t *testing.T) {
-	c := &MockTerminal{
-		toSend:       []byte("password\r\x1b[A\r"),
-		bytesPerRead: 1,
-	}
-	ss := NewTerminal(c, "> ")
-	pw, _ := ss.ReadPassword("> ")
-	if pw != "password" {
-		t.Fatalf("failed to read password, got %s", pw)
-	}
-	line, _ := ss.ReadLine()
-	if len(line) > 0 {
-		t.Fatalf("password was saved in history")
-	}
-}
-
-var setSizeTests = []struct {
-	width, height int
-}{
-	{40, 13},
-	{80, 24},
-	{132, 43},
-}
-
-func TestTerminalSetSize(t *testing.T) {
-	for _, setSize := range setSizeTests {
-		c := &MockTerminal{
-			toSend:       []byte("password\r\x1b[A\r"),
-			bytesPerRead: 1,
-		}
-		ss := NewTerminal(c, "> ")
-		ss.SetSize(setSize.width, setSize.height)
-		pw, _ := ss.ReadPassword("Password: ")
-		if pw != "password" {
-			t.Fatalf("failed to read password, got %s", pw)
-		}
-		if string(c.received) != "Password: \r\n" {
-			t.Errorf("failed to set the temporary prompt expected %q, got %q", "Password: ", c.received)
-		}
-	}
-}
-
-func TestReadPasswordLineEnd(t *testing.T) {
-	var tests = []struct {
-		input string
-		want  string
-	}{
-		{"\n", ""},
-		{"\r\n", ""},
-		{"test\r\n", "test"},
-		{"testtesttesttes\n", "testtesttesttes"},
-		{"testtesttesttes\r\n", "testtesttesttes"},
-		{"testtesttesttesttest\n", "testtesttesttesttest"},
-		{"testtesttesttesttest\r\n", "testtesttesttesttest"},
-	}
-	for _, test := range tests {
-		buf := new(bytes.Buffer)
-		if _, err := buf.WriteString(test.input); err != nil {
-			t.Fatal(err)
-		}
-
-		have, err := readPasswordLine(buf)
-		if err != nil {
-			t.Errorf("readPasswordLine(%q) failed: %v", test.input, err)
-			continue
-		}
-		if string(have) != test.want {
-			t.Errorf("readPasswordLine(%q) returns %q, but %q is expected", test.input, string(have), test.want)
-			continue
-		}
-
-		if _, err = buf.WriteString(test.input); err != nil {
-			t.Fatal(err)
-		}
-		have, err = readPasswordLine(buf)
-		if err != nil {
-			t.Errorf("readPasswordLine(%q) failed: %v", test.input, err)
-			continue
-		}
-		if string(have) != test.want {
-			t.Errorf("readPasswordLine(%q) returns %q, but %q is expected", test.input, string(have), test.want)
-			continue
-		}
-	}
-}
-
-func TestMakeRawState(t *testing.T) {
-	fd := int(os.Stdout.Fd())
-	if !IsTerminal(fd) {
-		t.Skip("stdout is not a terminal; skipping test")
-	}
-
-	st, err := GetState(fd)
-	if err != nil {
-		t.Fatalf("failed to get terminal state from GetState: %s", err)
-	}
-	defer Restore(fd, st)
-	raw, err := MakeRaw(fd)
-	if err != nil {
-		t.Fatalf("failed to get terminal state from MakeRaw: %s", err)
-	}
-
-	if *st != *raw {
-		t.Errorf("states do not match; was %v, expected %v", raw, st)
-	}
-}
-
-func TestOutputNewlines(t *testing.T) {
-	// \n should be changed to \r\n in terminal output.
-	buf := new(bytes.Buffer)
-	term := NewTerminal(buf, ">")
-
-	term.Write([]byte("1\n2\n"))
-	output := string(buf.Bytes())
-	const expected = "1\r\n2\r\n"
-
-	if output != expected {
-		t.Errorf("incorrect output: was %q, expected %q", output, expected)
-	}
-}
diff --git a/vendor/golang.org/x/crypto/ssh/terminal/util.go b/vendor/golang.org/x/crypto/ssh/terminal/util.go
index d019196..3911040 100644
--- a/vendor/golang.org/x/crypto/ssh/terminal/util.go
+++ b/vendor/golang.org/x/crypto/ssh/terminal/util.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build darwin dragonfly freebsd linux,!appengine netbsd openbsd
+// +build aix darwin dragonfly freebsd linux,!appengine netbsd openbsd
 
 // Package terminal provides support functions for dealing with terminals, as
 // commonly found on UNIX systems.
@@ -17,40 +17,41 @@
 package terminal // import "golang.org/x/crypto/ssh/terminal"
 
 import (
-	"syscall"
-	"unsafe"
+	"golang.org/x/sys/unix"
 )
 
 // State contains the state of a terminal.
 type State struct {
-	termios syscall.Termios
+	termios unix.Termios
 }
 
-// IsTerminal returns true if the given file descriptor is a terminal.
+// IsTerminal returns whether the given file descriptor is a terminal.
 func IsTerminal(fd int) bool {
-	var termios syscall.Termios
-	_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
-	return err == 0
+	_, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
+	return err == nil
 }
 
 // MakeRaw put the terminal connected to the given file descriptor into raw
 // mode and returns the previous state of the terminal so that it can be
 // restored.
 func MakeRaw(fd int) (*State, error) {
-	var oldState State
-	if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&oldState.termios)), 0, 0, 0); err != 0 {
+	termios, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
+	if err != nil {
 		return nil, err
 	}
 
-	newState := oldState.termios
+	oldState := State{termios: *termios}
+
 	// This attempts to replicate the behaviour documented for cfmakeraw in
 	// the termios(3) manpage.
-	newState.Iflag &^= syscall.IGNBRK | syscall.BRKINT | syscall.PARMRK | syscall.ISTRIP | syscall.INLCR | syscall.IGNCR | syscall.ICRNL | syscall.IXON
-	newState.Oflag &^= syscall.OPOST
-	newState.Lflag &^= syscall.ECHO | syscall.ECHONL | syscall.ICANON | syscall.ISIG | syscall.IEXTEN
-	newState.Cflag &^= syscall.CSIZE | syscall.PARENB
-	newState.Cflag |= syscall.CS8
-	if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlWriteTermios, uintptr(unsafe.Pointer(&newState)), 0, 0, 0); err != 0 {
+	termios.Iflag &^= unix.IGNBRK | unix.BRKINT | unix.PARMRK | unix.ISTRIP | unix.INLCR | unix.IGNCR | unix.ICRNL | unix.IXON
+	termios.Oflag &^= unix.OPOST
+	termios.Lflag &^= unix.ECHO | unix.ECHONL | unix.ICANON | unix.ISIG | unix.IEXTEN
+	termios.Cflag &^= unix.CSIZE | unix.PARENB
+	termios.Cflag |= unix.CS8
+	termios.Cc[unix.VMIN] = 1
+	termios.Cc[unix.VTIME] = 0
+	if err := unix.IoctlSetTermios(fd, ioctlWriteTermios, termios); err != nil {
 		return nil, err
 	}
 
@@ -60,60 +61,54 @@ func MakeRaw(fd int) (*State, error) {
 // GetState returns the current state of a terminal which may be useful to
 // restore the terminal after a signal.
 func GetState(fd int) (*State, error) {
-	var oldState State
-	if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&oldState.termios)), 0, 0, 0); err != 0 {
+	termios, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
+	if err != nil {
 		return nil, err
 	}
 
-	return &oldState, nil
+	return &State{termios: *termios}, nil
 }
 
 // Restore restores the terminal connected to the given file descriptor to a
 // previous state.
 func Restore(fd int, state *State) error {
-	if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlWriteTermios, uintptr(unsafe.Pointer(&state.termios)), 0, 0, 0); err != 0 {
-		return err
-	}
-	return nil
+	return unix.IoctlSetTermios(fd, ioctlWriteTermios, &state.termios)
 }
 
 // GetSize returns the dimensions of the given terminal.
 func GetSize(fd int) (width, height int, err error) {
-	var dimensions [4]uint16
-
-	if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), uintptr(syscall.TIOCGWINSZ), uintptr(unsafe.Pointer(&dimensions)), 0, 0, 0); err != 0 {
+	ws, err := unix.IoctlGetWinsize(fd, unix.TIOCGWINSZ)
+	if err != nil {
 		return -1, -1, err
 	}
-	return int(dimensions[1]), int(dimensions[0]), nil
+	return int(ws.Col), int(ws.Row), nil
 }
 
 // passwordReader is an io.Reader that reads from a specific file descriptor.
 type passwordReader int
 
 func (r passwordReader) Read(buf []byte) (int, error) {
-	return syscall.Read(int(r), buf)
+	return unix.Read(int(r), buf)
 }
 
 // ReadPassword reads a line of input from a terminal without local echo.  This
 // is commonly used for inputting passwords and other sensitive data. The slice
 // returned does not include the \n.
 func ReadPassword(fd int) ([]byte, error) {
-	var oldState syscall.Termios
-	if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&oldState)), 0, 0, 0); err != 0 {
+	termios, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
+	if err != nil {
 		return nil, err
 	}
 
-	newState := oldState
-	newState.Lflag &^= syscall.ECHO
-	newState.Lflag |= syscall.ICANON | syscall.ISIG
-	newState.Iflag |= syscall.ICRNL
-	if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlWriteTermios, uintptr(unsafe.Pointer(&newState)), 0, 0, 0); err != 0 {
+	newState := *termios
+	newState.Lflag &^= unix.ECHO
+	newState.Lflag |= unix.ICANON | unix.ISIG
+	newState.Iflag |= unix.ICRNL
+	if err := unix.IoctlSetTermios(fd, ioctlWriteTermios, &newState); err != nil {
 		return nil, err
 	}
 
-	defer func() {
-		syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlWriteTermios, uintptr(unsafe.Pointer(&oldState)), 0, 0, 0)
-	}()
+	defer unix.IoctlSetTermios(fd, ioctlWriteTermios, termios)
 
 	return readPasswordLine(passwordReader(fd))
 }
diff --git a/vendor/golang.org/x/crypto/ssh/terminal/util_aix.go b/vendor/golang.org/x/crypto/ssh/terminal/util_aix.go
new file mode 100644
index 0000000..dfcd627
--- /dev/null
+++ b/vendor/golang.org/x/crypto/ssh/terminal/util_aix.go
@@ -0,0 +1,12 @@
+// Copyright 2018 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.
+
+// +build aix
+
+package terminal
+
+import "golang.org/x/sys/unix"
+
+const ioctlReadTermios = unix.TCGETS
+const ioctlWriteTermios = unix.TCSETS
diff --git a/vendor/golang.org/x/crypto/ssh/terminal/util_bsd.go b/vendor/golang.org/x/crypto/ssh/terminal/util_bsd.go
index 9c1ffd1..cb23a59 100644
--- a/vendor/golang.org/x/crypto/ssh/terminal/util_bsd.go
+++ b/vendor/golang.org/x/crypto/ssh/terminal/util_bsd.go
@@ -6,7 +6,7 @@
 
 package terminal
 
-import "syscall"
+import "golang.org/x/sys/unix"
 
-const ioctlReadTermios = syscall.TIOCGETA
-const ioctlWriteTermios = syscall.TIOCSETA
+const ioctlReadTermios = unix.TIOCGETA
+const ioctlWriteTermios = unix.TIOCSETA
diff --git a/vendor/golang.org/x/crypto/ssh/terminal/util_linux.go b/vendor/golang.org/x/crypto/ssh/terminal/util_linux.go
index 5883b22..5fadfe8 100644
--- a/vendor/golang.org/x/crypto/ssh/terminal/util_linux.go
+++ b/vendor/golang.org/x/crypto/ssh/terminal/util_linux.go
@@ -4,8 +4,7 @@
 
 package terminal
 
-// These constants are declared here, rather than importing
-// them from the syscall package as some syscall packages, even
-// on linux, for example gccgo, do not declare them.
-const ioctlReadTermios = 0x5401  // syscall.TCGETS
-const ioctlWriteTermios = 0x5402 // syscall.TCSETS
+import "golang.org/x/sys/unix"
+
+const ioctlReadTermios = unix.TCGETS
+const ioctlWriteTermios = unix.TCSETS
diff --git a/vendor/golang.org/x/crypto/ssh/terminal/util_plan9.go b/vendor/golang.org/x/crypto/ssh/terminal/util_plan9.go
index 799f049..9317ac7 100644
--- a/vendor/golang.org/x/crypto/ssh/terminal/util_plan9.go
+++ b/vendor/golang.org/x/crypto/ssh/terminal/util_plan9.go
@@ -21,7 +21,7 @@ import (
 
 type State struct{}
 
-// IsTerminal returns true if the given file descriptor is a terminal.
+// IsTerminal returns whether the given file descriptor is a terminal.
 func IsTerminal(fd int) bool {
 	return false
 }
diff --git a/vendor/golang.org/x/crypto/ssh/terminal/util_solaris.go b/vendor/golang.org/x/crypto/ssh/terminal/util_solaris.go
index a2e1b57..3d5f06a 100644
--- a/vendor/golang.org/x/crypto/ssh/terminal/util_solaris.go
+++ b/vendor/golang.org/x/crypto/ssh/terminal/util_solaris.go
@@ -14,10 +14,10 @@ import (
 
 // State contains the state of a terminal.
 type State struct {
-	state *unix.Termios
+	termios unix.Termios
 }
 
-// IsTerminal returns true if the given file descriptor is a terminal.
+// IsTerminal returns whether the given file descriptor is a terminal.
 func IsTerminal(fd int) bool {
 	_, err := unix.IoctlGetTermio(fd, unix.TCGETA)
 	return err == nil
@@ -75,47 +75,43 @@ func ReadPassword(fd int) ([]byte, error) {
 // restored.
 // see http://cr.illumos.org/~webrev/andy_js/1060/
 func MakeRaw(fd int) (*State, error) {
-	oldTermiosPtr, err := unix.IoctlGetTermios(fd, unix.TCGETS)
+	termios, err := unix.IoctlGetTermios(fd, unix.TCGETS)
 	if err != nil {
 		return nil, err
 	}
-	oldTermios := *oldTermiosPtr
 
-	newTermios := oldTermios
-	newTermios.Iflag &^= syscall.IGNBRK | syscall.BRKINT | syscall.PARMRK | syscall.ISTRIP | syscall.INLCR | syscall.IGNCR | syscall.ICRNL | syscall.IXON
-	newTermios.Oflag &^= syscall.OPOST
-	newTermios.Lflag &^= syscall.ECHO | syscall.ECHONL | syscall.ICANON | syscall.ISIG | syscall.IEXTEN
-	newTermios.Cflag &^= syscall.CSIZE | syscall.PARENB
-	newTermios.Cflag |= syscall.CS8
-	newTermios.Cc[unix.VMIN] = 1
-	newTermios.Cc[unix.VTIME] = 0
+	oldState := State{termios: *termios}
 
-	if err := unix.IoctlSetTermios(fd, unix.TCSETS, &newTermios); err != nil {
+	termios.Iflag &^= unix.IGNBRK | unix.BRKINT | unix.PARMRK | unix.ISTRIP | unix.INLCR | unix.IGNCR | unix.ICRNL | unix.IXON
+	termios.Oflag &^= unix.OPOST
+	termios.Lflag &^= unix.ECHO | unix.ECHONL | unix.ICANON | unix.ISIG | unix.IEXTEN
+	termios.Cflag &^= unix.CSIZE | unix.PARENB
+	termios.Cflag |= unix.CS8
+	termios.Cc[unix.VMIN] = 1
+	termios.Cc[unix.VTIME] = 0
+
+	if err := unix.IoctlSetTermios(fd, unix.TCSETS, termios); err != nil {
 		return nil, err
 	}
 
-	return &State{
-		state: oldTermiosPtr,
-	}, nil
+	return &oldState, nil
 }
 
 // Restore restores the terminal connected to the given file descriptor to a
 // previous state.
 func Restore(fd int, oldState *State) error {
-	return unix.IoctlSetTermios(fd, unix.TCSETS, oldState.state)
+	return unix.IoctlSetTermios(fd, unix.TCSETS, &oldState.termios)
 }
 
 // GetState returns the current state of a terminal which may be useful to
 // restore the terminal after a signal.
 func GetState(fd int) (*State, error) {
-	oldTermiosPtr, err := unix.IoctlGetTermios(fd, unix.TCGETS)
+	termios, err := unix.IoctlGetTermios(fd, unix.TCGETS)
 	if err != nil {
 		return nil, err
 	}
 
-	return &State{
-		state: oldTermiosPtr,
-	}, nil
+	return &State{termios: *termios}, nil
 }
 
 // GetSize returns the dimensions of the given terminal.
diff --git a/vendor/golang.org/x/crypto/ssh/terminal/util_windows.go b/vendor/golang.org/x/crypto/ssh/terminal/util_windows.go
index e0a1f36..5cfdf8f 100644
--- a/vendor/golang.org/x/crypto/ssh/terminal/util_windows.go
+++ b/vendor/golang.org/x/crypto/ssh/terminal/util_windows.go
@@ -17,64 +17,20 @@
 package terminal
 
 import (
-	"syscall"
-	"unsafe"
-)
-
-const (
-	enableLineInput       = 2
-	enableEchoInput       = 4
-	enableProcessedInput  = 1
-	enableWindowInput     = 8
-	enableMouseInput      = 16
-	enableInsertMode      = 32
-	enableQuickEditMode   = 64
-	enableExtendedFlags   = 128
-	enableAutoPosition    = 256
-	enableProcessedOutput = 1
-	enableWrapAtEolOutput = 2
-)
-
-var kernel32 = syscall.NewLazyDLL("kernel32.dll")
+	"os"
 
-var (
-	procGetConsoleMode             = kernel32.NewProc("GetConsoleMode")
-	procSetConsoleMode             = kernel32.NewProc("SetConsoleMode")
-	procGetConsoleScreenBufferInfo = kernel32.NewProc("GetConsoleScreenBufferInfo")
-)
-
-type (
-	short int16
-	word  uint16
-
-	coord struct {
-		x short
-		y short
-	}
-	smallRect struct {
-		left   short
-		top    short
-		right  short
-		bottom short
-	}
-	consoleScreenBufferInfo struct {
-		size              coord
-		cursorPosition    coord
-		attributes        word
-		window            smallRect
-		maximumWindowSize coord
-	}
+	"golang.org/x/sys/windows"
 )
 
 type State struct {
 	mode uint32
 }
 
-// IsTerminal returns true if the given file descriptor is a terminal.
+// IsTerminal returns whether the given file descriptor is a terminal.
 func IsTerminal(fd int) bool {
 	var st uint32
-	r, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, uintptr(fd), uintptr(unsafe.Pointer(&st)), 0)
-	return r != 0 && e == 0
+	err := windows.GetConsoleMode(windows.Handle(fd), &st)
+	return err == nil
 }
 
 // MakeRaw put the terminal connected to the given file descriptor into raw
@@ -82,14 +38,12 @@ func IsTerminal(fd int) bool {
 // restored.
 func MakeRaw(fd int) (*State, error) {
 	var st uint32
-	_, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, uintptr(fd), uintptr(unsafe.Pointer(&st)), 0)
-	if e != 0 {
-		return nil, error(e)
+	if err := windows.GetConsoleMode(windows.Handle(fd), &st); err != nil {
+		return nil, err
 	}
-	raw := st &^ (enableEchoInput | enableProcessedInput | enableLineInput | enableProcessedOutput)
-	_, _, e = syscall.Syscall(procSetConsoleMode.Addr(), 2, uintptr(fd), uintptr(raw), 0)
-	if e != 0 {
-		return nil, error(e)
+	raw := st &^ (windows.ENABLE_ECHO_INPUT | windows.ENABLE_PROCESSED_INPUT | windows.ENABLE_LINE_INPUT | windows.ENABLE_PROCESSED_OUTPUT)
+	if err := windows.SetConsoleMode(windows.Handle(fd), raw); err != nil {
+		return nil, err
 	}
 	return &State{st}, nil
 }
@@ -98,9 +52,8 @@ func MakeRaw(fd int) (*State, error) {
 // restore the terminal after a signal.
 func GetState(fd int) (*State, error) {
 	var st uint32
-	_, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, uintptr(fd), uintptr(unsafe.Pointer(&st)), 0)
-	if e != 0 {
-		return nil, error(e)
+	if err := windows.GetConsoleMode(windows.Handle(fd), &st); err != nil {
+		return nil, err
 	}
 	return &State{st}, nil
 }
@@ -108,25 +61,18 @@ func GetState(fd int) (*State, error) {
 // Restore restores the terminal connected to the given file descriptor to a
 // previous state.
 func Restore(fd int, state *State) error {
-	_, _, err := syscall.Syscall(procSetConsoleMode.Addr(), 2, uintptr(fd), uintptr(state.mode), 0)
-	return err
+	return windows.SetConsoleMode(windows.Handle(fd), state.mode)
 }
 
-// GetSize returns the dimensions of the given terminal.
+// GetSize returns the visible dimensions of the given terminal.
+//
+// These dimensions don't include any scrollback buffer height.
 func GetSize(fd int) (width, height int, err error) {
-	var info consoleScreenBufferInfo
-	_, _, e := syscall.Syscall(procGetConsoleScreenBufferInfo.Addr(), 2, uintptr(fd), uintptr(unsafe.Pointer(&info)), 0)
-	if e != 0 {
-		return 0, 0, error(e)
+	var info windows.ConsoleScreenBufferInfo
+	if err := windows.GetConsoleScreenBufferInfo(windows.Handle(fd), &info); err != nil {
+		return 0, 0, err
 	}
-	return int(info.size.x), int(info.size.y), nil
-}
-
-// passwordReader is an io.Reader that reads from a specific Windows HANDLE.
-type passwordReader int
-
-func (r passwordReader) Read(buf []byte) (int, error) {
-	return syscall.Read(syscall.Handle(r), buf)
+	return int(info.Window.Right - info.Window.Left + 1), int(info.Window.Bottom - info.Window.Top + 1), nil
 }
 
 // ReadPassword reads a line of input from a terminal without local echo.  This
@@ -134,22 +80,26 @@ func (r passwordReader) Read(buf []byte) (int, error) {
 // returned does not include the \n.
 func ReadPassword(fd int) ([]byte, error) {
 	var st uint32
-	_, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, uintptr(fd), uintptr(unsafe.Pointer(&st)), 0)
-	if e != 0 {
-		return nil, error(e)
+	if err := windows.GetConsoleMode(windows.Handle(fd), &st); err != nil {
+		return nil, err
 	}
 	old := st
 
-	st &^= (enableEchoInput)
-	st |= (enableProcessedInput | enableLineInput | enableProcessedOutput)
-	_, _, e = syscall.Syscall(procSetConsoleMode.Addr(), 2, uintptr(fd), uintptr(st), 0)
-	if e != 0 {
-		return nil, error(e)
+	st &^= (windows.ENABLE_ECHO_INPUT)
+	st |= (windows.ENABLE_PROCESSED_INPUT | windows.ENABLE_LINE_INPUT | windows.ENABLE_PROCESSED_OUTPUT)
+	if err := windows.SetConsoleMode(windows.Handle(fd), st); err != nil {
+		return nil, err
 	}
 
-	defer func() {
-		syscall.Syscall(procSetConsoleMode.Addr(), 2, uintptr(fd), uintptr(old), 0)
-	}()
+	defer windows.SetConsoleMode(windows.Handle(fd), old)
+
+	var h windows.Handle
+	p, _ := windows.GetCurrentProcess()
+	if err := windows.DuplicateHandle(p, windows.Handle(fd), p, &h, 0, false, windows.DUPLICATE_SAME_ACCESS); err != nil {
+		return nil, err
+	}
 
-	return readPasswordLine(passwordReader(fd))
+	f := os.NewFile(uintptr(h), "stdin")
+	defer f.Close()
+	return readPasswordLine(f)
 }