56 lines
1.4 KiB
Go
56 lines
1.4 KiB
Go
// +build solaris
|
|
|
|
package password
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"syscall"
|
|
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
func read(f *os.File) (string, error) {
|
|
fd := int(f.Fd())
|
|
if !isTerminal(fd) {
|
|
return "", fmt.Errorf("file descriptor %d is not a terminal", fd)
|
|
}
|
|
|
|
oldState, err := makeRaw(fd)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
defer unix.IoctlSetTermios(fd, unix.TCSETS, oldState)
|
|
|
|
return readline(f)
|
|
}
|
|
|
|
// 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 int) bool {
|
|
var termio unix.Termio
|
|
err := unix.IoctlSetTermio(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 int) (*unix.Termios, 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(fd, unix.TCSETS, &newTermios); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return oldTermiosPtr, nil
|
|
}
|