2 -- SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 -- Copyright (c) 2015 Pedro Souza <pedrosouza@freebsd.org>
5 -- Copyright (C) 2018 Kyle Evans <kevans@FreeBSD.org>
6 -- All rights reserved.
8 -- Redistribution and use in source and binary forms, with or without
9 -- modification, are permitted provided that the following conditions
11 -- 1. Redistributions of source code must retain the above copyright
12 -- notice, this list of conditions and the following disclaimer.
13 -- 2. Redistributions in binary form must reproduce the above copyright
14 -- notice, this list of conditions and the following disclaimer in the
15 -- documentation and/or other materials provided with the distribution.
17 -- THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 -- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 -- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 -- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 -- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 -- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 -- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 -- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 -- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 -- OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 local core = require("core")
33 local screen = require("screen")
37 local INCORRECT_PASSWORD = "loader: incorrect password"
38 -- Asterisks as a password mask
39 local show_password_mask = false
40 local twiddle_chars = {"/", "-", "\\", "|"}
43 function password.read(prompt_length)
47 local function draw_twiddle()
48 printc(twiddle_chars[twiddle_pos])
49 -- Reset cursor to just after the password prompt
50 screen.setcursor(prompt_length + 2, screen.default_y)
51 twiddle_pos = (twiddle_pos % #twiddle_chars) + 1
54 -- Space between the prompt and any on-screen feedback
57 local ch = io.getchar()
58 if ch == core.KEY_ENTER then
61 if ch == core.KEY_BACKSPACE or ch == core.KEY_DELETE then
63 if show_password_mask then
68 str = str:sub(1, #str - 1)
71 if show_password_mask then
76 str = str .. string.char(ch)
82 function password.check()
85 -- pwd is optionally supplied if we want to check it
86 local function doPrompt(prompt, pwd)
89 local function clear_incorrect_text_prompt()
90 printc("\r" .. string.rep(" ", #INCORRECT_PASSWORD))
95 clear_incorrect_text_prompt()
99 local read_pwd = password.read(#prompt)
100 if pwd == nil or pwd == read_pwd then
101 -- Clear the prompt + twiddle
102 printc(string.rep(" ", #prompt + 5))
105 printc("\n" .. INCORRECT_PASSWORD)
106 attempts = attempts + 1
107 loader.delay(3*1000*1000)
110 local function compare(prompt, pwd)
114 doPrompt(prompt, pwd)
117 local boot_pwd = loader.getenv("bootlock_password")
118 compare("Bootlock password:", boot_pwd)
120 local geli_prompt = loader.getenv("geom_eli_passphrase_prompt")
121 if geli_prompt ~= nil and geli_prompt:lower() == "yes" then
122 local passphrase = doPrompt("GELI Passphrase:")
123 loader.setenv("kern.geom.eli.passphrase", passphrase)
126 local pwd = loader.getenv("password")
130 compare("Loader password:", pwd)