105 lines
3.0 KiB
Lua
105 lines
3.0 KiB
Lua
--
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-- SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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--
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-- Copyright (c) 2015 Pedro Souza <pedrosouza@freebsd.org>
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-- Copyright (C) 2018 Kyle Evans <kevans@FreeBSD.org>
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-- All rights reserved.
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--
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-- Redistribution and use in source and binary forms, with or without
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-- modification, are permitted provided that the following conditions
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-- are met:
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-- 1. Redistributions of source code must retain the above copyright
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-- notice, this list of conditions and the following disclaimer.
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-- 2. Redistributions in binary form must reproduce the above copyright
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-- notice, this list of conditions and the following disclaimer in the
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-- documentation and/or other materials provided with the distribution.
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--
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-- THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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-- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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-- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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-- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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-- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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-- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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-- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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-- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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-- OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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-- SUCH DAMAGE.
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--
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-- $FreeBSD$
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--
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local core = require("core")
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local screen = require("screen")
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local password = {}
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-- Module exports
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function password.read()
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local str = ""
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local n = 0
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while true do
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local ch = io.getchar()
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if ch == core.KEY_ENTER then
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break
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end
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-- XXX TODO: Evaluate if we really want this or not, as a
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-- security consideration of sorts
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if ch == core.KEY_BACKSPACE or ch == core.KEY_DELETE then
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if n > 0 then
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n = n - 1
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-- loader.printc("\008 \008")
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str = str:sub(1, n)
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end
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else
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-- loader.printc("*")
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str = str .. string.char(ch)
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n = n + 1
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end
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end
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return str
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end
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function password.check()
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screen.clear()
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screen.defcursor()
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-- pwd is optionally supplied if we want to check it
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local function do_prompt(prompt, pwd)
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while true do
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loader.printc(prompt)
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local read_pwd = password.read()
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if pwd == nil or pwd == read_pwd then
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-- Throw an extra newline after password prompt
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print("")
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return read_pwd
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end
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print("\n\nloader: incorrect password!\n")
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loader.delay(3*1000*1000)
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end
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end
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local function compare(prompt, pwd)
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if pwd == nil then
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return
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end
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do_prompt(prompt, pwd)
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end
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local boot_pwd = loader.getenv("bootlock_password")
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compare("Boot password: ", boot_pwd)
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local geli_prompt = loader.getenv("geom_eli_passphrase_prompt")
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if geli_prompt ~= nil and geli_prompt:lower() == "yes" then
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local passphrase = do_prompt("GELI Passphrase: ")
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loader.setenv("kern.geom.eli.passphrase", passphrase)
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end
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local pwd = loader.getenv("password")
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if pwd ~= nil then
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core.autoboot()
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end
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compare("Password: ", pwd)
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end
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return password
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