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v/vlib/os/password_nix.c.v

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module os
#include <termios.h>
pub struct C.termios {
mut:
c_iflag int
c_oflag int
c_cflag int
c_lflag int
c_cc [20]u8
}
fn C.tcgetattr(fd int, ptr &C.termios) int
fn C.tcsetattr(fd int, action int, const_ptr &C.termios) int
// input_password prompts the user for a password-like secret. It disables
// the terminal echo during user input and resets it back to normal when done.
pub fn input_password(prompt string) !string {
if is_atty(1) <= 0 || getenv('TERM') == 'dumb' {
return error('Could not obtain password discretely.')
}
old_state := C.termios{}
if unsafe { C.tcgetattr(0, &old_state) } != 0 {
return last_error()
}
defer {
unsafe { C.tcsetattr(0, C.TCSANOW, &old_state) }
println('')
}
mut new_state := old_state
new_state.c_lflag &= int(~u32(C.ECHO)) // Disable echoing of characters
unsafe { C.tcsetattr(0, C.TCSANOW, &new_state) }
password := input_opt(prompt) or { return error('Failed to read password') }
return password
}