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|
use anyhow::Context as _;
#[derive(Debug)]
pub enum TimeoutEvent {
Set,
Clear,
}
pub struct State {
pub priv_key: Option<rbw::locked::Keys>,
pub org_keys:
Option<std::collections::HashMap<String, rbw::locked::Keys>>,
pub timeout_chan: tokio::sync::mpsc::UnboundedSender<TimeoutEvent>,
}
impl State {
pub fn key(&self, org_id: Option<&str>) -> Option<&rbw::locked::Keys> {
match org_id {
Some(id) => self.org_keys.as_ref().and_then(|h| h.get(id)),
None => self.priv_key.as_ref(),
}
}
pub fn needs_unlock(&self) -> bool {
self.priv_key.is_none() || self.org_keys.is_none()
}
pub fn set_timeout(&mut self) {
// no real better option to unwrap here
self.timeout_chan.send(TimeoutEvent::Set).unwrap();
}
pub fn clear(&mut self) {
self.priv_key = None;
self.org_keys = Default::default();
// no real better option to unwrap here
self.timeout_chan.send(TimeoutEvent::Clear).unwrap();
}
}
pub struct Agent {
timeout_duration: tokio::time::Duration,
timeout: Option<std::pin::Pin<Box<tokio::time::Sleep>>>,
timeout_chan: tokio::sync::mpsc::UnboundedReceiver<TimeoutEvent>,
state: std::sync::Arc<tokio::sync::RwLock<State>>,
}
impl Agent {
pub fn new() -> anyhow::Result<Self> {
let config = rbw::config::Config::load()?;
let timeout_duration =
tokio::time::Duration::from_secs(config.lock_timeout);
let (w, r) = tokio::sync::mpsc::unbounded_channel();
Ok(Self {
timeout_duration,
timeout: None,
timeout_chan: r,
state: std::sync::Arc::new(tokio::sync::RwLock::new(State {
priv_key: None,
org_keys: Default::default(),
timeout_chan: w,
})),
})
}
fn set_timeout(&mut self) {
self.timeout =
Some(Box::pin(tokio::time::sleep(self.timeout_duration)));
}
fn clear_timeout(&mut self) {
self.timeout = None;
}
pub async fn run(
&mut self,
listener: tokio::net::UnixListener,
) -> anyhow::Result<()> {
// tokio only supports timeouts up to 2^36 milliseconds
let mut forever = Box::pin(tokio::time::sleep(
tokio::time::Duration::from_secs(60 * 60 * 24 * 365 * 2),
));
loop {
let timeout = if let Some(timeout) = &mut self.timeout {
timeout
} else {
&mut forever
};
tokio::select! {
sock = listener.accept() => {
let mut sock = crate::sock::Sock::new(
sock.context("failed to accept incoming connection")?.0
);
let state = self.state.clone();
tokio::spawn(async move {
let res
= handle_request(&mut sock, state.clone()).await;
if let Err(e) = res {
// unwrap is the only option here
sock.send(&rbw::protocol::Response::Error {
error: format!("{:#}", e),
}).await.unwrap();
}
});
}
_ = timeout => {
let state = self.state.clone();
tokio::spawn(async move{
state.write().await.clear();
});
}
Some(ev) = self.timeout_chan.recv() => {
match ev {
TimeoutEvent::Set => self.set_timeout(),
TimeoutEvent::Clear => self.clear_timeout(),
}
}
}
}
}
}
async fn handle_request(
sock: &mut crate::sock::Sock,
state: std::sync::Arc<tokio::sync::RwLock<State>>,
) -> anyhow::Result<()> {
let req = sock.recv().await?;
let req = match req {
Ok(msg) => msg,
Err(error) => {
sock.send(&rbw::protocol::Response::Error { error }).await?;
return Ok(());
}
};
let set_timeout = match &req.action {
rbw::protocol::Action::Register => {
crate::actions::register(sock, req.tty.as_deref()).await?;
true
}
rbw::protocol::Action::Login => {
crate::actions::login(sock, state.clone(), req.tty.as_deref())
.await?;
true
}
rbw::protocol::Action::Unlock => {
crate::actions::unlock(sock, state.clone(), req.tty.as_deref())
.await?;
true
}
rbw::protocol::Action::CheckLock => {
crate::actions::check_lock(
sock,
state.clone(),
req.tty.as_deref(),
)
.await?;
false
}
rbw::protocol::Action::Lock => {
crate::actions::lock(sock, state.clone()).await?;
false
}
rbw::protocol::Action::Sync => {
crate::actions::sync(sock, true).await?;
false
}
rbw::protocol::Action::Decrypt {
cipherstring,
org_id,
} => {
crate::actions::decrypt(
sock,
state.clone(),
cipherstring,
org_id.as_deref(),
)
.await?;
true
}
rbw::protocol::Action::Encrypt { plaintext, org_id } => {
crate::actions::encrypt(
sock,
state.clone(),
plaintext,
org_id.as_deref(),
)
.await?;
true
}
rbw::protocol::Action::Quit => std::process::exit(0),
rbw::protocol::Action::Version => {
crate::actions::version(sock).await?;
true
}
};
if set_timeout {
state.write().await.set_timeout();
}
Ok(())
}
|
