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// -*- coding: utf-8 -*-
//
// pwman-f2e
//
// Copyright 2023 Michael Büsch <m@bues.ch>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
mod ctap;
mod hid;
use anyhow::{self as ah, Context as _};
use privdrop::PrivDrop;
use std::thread::sleep;
use std::time::Duration;
use crate::ctap::Ctap;
use crate::hid::CtapHid;
fn main() -> ah::Result<()> {
let mut hid = CtapHid::new().context("Failed to create emulated HID device.")?;
let mut ctap = Ctap::new();
// Drop root privileges.
//TODO config user/group
PrivDrop::default()
.user("mb")
.group("mb")
.apply()
.context("Failed to drop privileges.")?;
loop {
let mut error = false;
if let Err(e) = hid.read() {
eprintln!("HID read error: {e}");
error = true;
}
if !error {
for (cid, command) in hid.get_commands() {
match ctap.handle_command(command) {
Ok(response) => {
if let Err(e) = hid.send_response(cid, response) {
eprintln!("HID write error: {e}");
error = true;
}
}
Err(e) => {
eprintln!("Failed to handle CTAP command: {e}");
error = true;
}
}
}
}
if error {
sleep(Duration::from_millis(500));
} else {
sleep(Duration::from_millis(10));
}
}
}
// vim: ts=4 sw=4 expandtab
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