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- // Copyright 2015 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 solaris
-
- package terminal // import "golang.org/x/crypto/ssh/terminal"
-
- import (
- "golang.org/x/sys/unix"
- "io"
- "syscall"
- )
-
- // State contains the state of a terminal.
- type State struct {
- termios syscall.Termios
- }
-
- // IsTerminal returns true if the given file descriptor is a terminal.
- func IsTerminal(fd int) bool {
- // see: http://src.illumos.org/source/xref/illumos-gate/usr/src/lib/libbc/libc/gen/common/isatty.c
- var termio unix.Termio
- err := unix.IoctlSetTermio(fd, unix.TCGETA, &termio)
- return err == nil
- }
-
- // 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) {
- // see also: http://src.illumos.org/source/xref/illumos-gate/usr/src/lib/libast/common/uwin/getpass.c
- val, err := unix.IoctlGetTermios(fd, unix.TCGETS)
- if err != nil {
- return nil, err
- }
- oldState := *val
-
- newState := oldState
- newState.Lflag &^= syscall.ECHO
- newState.Lflag |= syscall.ICANON | syscall.ISIG
- newState.Iflag |= syscall.ICRNL
- err = unix.IoctlSetTermios(fd, unix.TCSETS, &newState)
- if err != nil {
- return nil, err
- }
-
- defer unix.IoctlSetTermios(fd, unix.TCSETS, &oldState)
-
- var buf [16]byte
- var ret []byte
- for {
- n, err := syscall.Read(fd, buf[:])
- if err != nil {
- return nil, err
- }
- if n == 0 {
- if len(ret) == 0 {
- return nil, io.EOF
- }
- break
- }
- if buf[n-1] == '\n' {
- n--
- }
- ret = append(ret, buf[:n]...)
- if n < len(buf) {
- break
- }
- }
-
- return ret, nil
- }
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