70 lines
2.2 KiB
Go
70 lines
2.2 KiB
Go
/*
|
|
* CDDL HEADER START
|
|
*
|
|
* The contents of this file are subject to the terms of the
|
|
* Common Development and Distribution License, Version 1.0 only
|
|
* (the "License"). You may not use this file except in compliance
|
|
* with the License.
|
|
*
|
|
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
|
* or http://www.opensolaris.org/os/licensing.
|
|
* See the License for the specific language governing permissions
|
|
* and limitations under the License.
|
|
*
|
|
* When distributing Covered Code, include this CDDL HEADER in each
|
|
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
|
* If applicable, add the following below this CDDL HEADER, with the
|
|
* fields enclosed by brackets "[]" replaced with your own identifying
|
|
* information: Portions Copyright [yyyy] [name of copyright owner]
|
|
*
|
|
* CDDL HEADER END
|
|
*/
|
|
// Below is derived from Solaris source, so CDDL license is included.
|
|
|
|
package gopass
|
|
|
|
import (
|
|
"syscall"
|
|
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
type terminalState struct {
|
|
state *unix.Termios
|
|
}
|
|
|
|
// isTerminal returns true if there is a terminal attached to the given
|
|
// file descriptor.
|
|
// Source: http://src.illumos.org/source/xref/illumos-gate/usr/src/lib/libbc/libc/gen/common/isatty.c
|
|
func isTerminal(fd uintptr) bool {
|
|
var termio unix.Termio
|
|
err := unix.IoctlSetTermio(int(fd), unix.TCGETA, &termio)
|
|
return err == nil
|
|
}
|
|
|
|
// makeRaw puts 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.
|
|
// Source: http://src.illumos.org/source/xref/illumos-gate/usr/src/lib/libast/common/uwin/getpass.c
|
|
func makeRaw(fd uintptr) (*terminalState, error) {
|
|
oldTermiosPtr, err := unix.IoctlGetTermios(int(fd), unix.TCGETS)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
oldTermios := *oldTermiosPtr
|
|
|
|
newTermios := oldTermios
|
|
newTermios.Lflag &^= syscall.ECHO | syscall.ECHOE | syscall.ECHOK | syscall.ECHONL
|
|
if err := unix.IoctlSetTermios(int(fd), unix.TCSETS, &newTermios); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &terminalState{
|
|
state: oldTermiosPtr,
|
|
}, nil
|
|
}
|
|
|
|
func restore(fd uintptr, oldState *terminalState) error {
|
|
return unix.IoctlSetTermios(int(fd), unix.TCSETS, oldState.state)
|
|
}
|