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terminal_solaris.go
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terminal_solaris.go
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/*
* 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)
}

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