diff --git a/stand/lua/password.lua b/stand/lua/password.lua index 124ce5686349..633c32d2e6df 100644 --- a/stand/lua/password.lua +++ b/stand/lua/password.lua @@ -33,27 +33,46 @@ local core = require("core") local screen = require("screen") local password = {} +-- Asterisks as a password mask +local show_password_mask = false +local twiddle_chars = {"/", "-", "\\", "|"} +local twiddle_pos = 1 -- Module exports function password.read() local str = "" local n = 0 + twiddle_pos = 1 + local function draw_twiddle() + loader.printc(" " .. twiddle_chars[twiddle_pos]) + screen.movecursor(-3, -1) + twiddle_pos = (twiddle_pos % #twiddle_chars) + 1 + end + + -- Space between the prompt and any on-screen feedback + loader.printc(" ") while true do local ch = io.getchar() if ch == core.KEY_ENTER then break end - -- XXX TODO: Evaluate if we really want this or not, as a - -- security consideration of sorts if ch == core.KEY_BACKSPACE or ch == core.KEY_DELETE then if n > 0 then n = n - 1 - -- loader.printc("\008 \008") + if show_password_mask then + loader.printc("\008 \008") + else + draw_twiddle() + end str = str:sub(1, n) end else - -- loader.printc("*") + if show_password_mask then + loader.printc("*") + else + draw_twiddle() + end str = str .. string.char(ch) n = n + 1 end diff --git a/stand/lua/screen.lua b/stand/lua/screen.lua index 7f883af8b440..a16f410764f6 100644 --- a/stand/lua/screen.lua +++ b/stand/lua/screen.lua @@ -49,6 +49,24 @@ function screen.setcursor(x, y) loader.printc("\027[" .. y .. ";" .. x .. "H") end +function screen.movecursor(dx, dy) + if core.isSerialBoot() then + return + end + + if dx < 0 then + loader.printc("\027[" .. -dx .. "D") + elseif dx > 0 then + loader.printc("\027[" .. dx .. "C") + end + + if dy < 0 then + loader.printc("\027[" .. -dy .. "A") + elseif dy > 0 then + loader.printc("\027[" .. dy .. "B") + end +end + function screen.setforeground(color_value) if color.disabled then return color_value