defcc76534
In the worst case scenario, we have no passwords to prompt for and we end up just clearing the screen twice before we draw the menu or proceed with boot. In the best case scenario, we don't try drawing password prompts amidst a bunch of kernel/module loading.
101 lines
3.0 KiB
Lua
101 lines
3.0 KiB
Lua
--
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-- Copyright (c) 2015 Pedro Souza <pedrosouza@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 password = {};
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local core = require("core");
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local screen = require("screen");
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function password.read()
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local str = "";
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local n = 0;
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repeat
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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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until (n == 16);
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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 (not pwd) 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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