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|
use anyhow::Context as _;
use futures_util::StreamExt as _;
use crate::notifications;
pub struct State {
pub priv_key: Option<rbw::locked::Keys>,
pub org_keys:
Option<std::collections::HashMap<String, rbw::locked::Keys>>,
pub timeout: crate::timeout::Timeout,
pub timeout_duration: std::time::Duration,
pub sync_timeout: crate::timeout::Timeout,
pub sync_timeout_duration: std::time::Duration,
pub notifications_handler: crate::notifications::Handler,
pub clipboard: Box<dyn copypasta::ClipboardProvider>,
}
impl State {
pub fn key(&self, org_id: Option<&str>) -> Option<&rbw::locked::Keys> {
org_id.map_or(self.priv_key.as_ref(), |id| {
self.org_keys.as_ref().and_then(|h| h.get(id))
})
}
pub fn needs_unlock(&self) -> bool {
self.priv_key.is_none() || self.org_keys.is_none()
}
pub fn set_timeout(&mut self) {
self.timeout.set(self.timeout_duration);
}
pub fn clear(&mut self) {
self.priv_key = None;
self.org_keys = None;
self.timeout.clear();
}
pub fn set_sync_timeout(&mut self) {
self.sync_timeout.set(self.sync_timeout_duration);
}
}
pub struct Agent {
timer_r: tokio::sync::mpsc::UnboundedReceiver<()>,
sync_timer_r: tokio::sync::mpsc::UnboundedReceiver<()>,
state: std::sync::Arc<tokio::sync::Mutex<State>>,
}
impl Agent {
pub fn new() -> anyhow::Result<Self> {
let config = rbw::config::Config::load()?;
let timeout_duration =
std::time::Duration::from_secs(config.lock_timeout);
let sync_timeout_duration =
std::time::Duration::from_secs(config.sync_interval);
let (timeout, timer_r) = crate::timeout::Timeout::new();
let (sync_timeout, sync_timer_r) = crate::timeout::Timeout::new();
if sync_timeout_duration > std::time::Duration::ZERO {
sync_timeout.set(sync_timeout_duration);
}
let notifications_handler = crate::notifications::Handler::new();
let clipboard: Box<dyn copypasta::ClipboardProvider> =
copypasta::ClipboardContext::new().map_or_else(
|e| {
log::warn!("couldn't create clipboard context: {e}");
let clipboard = Box::new(
// infallible
copypasta::nop_clipboard::NopClipboardContext::new()
.unwrap(),
);
let clipboard: Box<dyn copypasta::ClipboardProvider> =
clipboard;
clipboard
},
|clipboard| {
let clipboard = Box::new(clipboard);
let clipboard: Box<dyn copypasta::ClipboardProvider> =
clipboard;
clipboard
},
);
Ok(Self {
timer_r,
sync_timer_r,
state: std::sync::Arc::new(tokio::sync::Mutex::new(State {
priv_key: None,
org_keys: None,
timeout,
timeout_duration,
sync_timeout,
sync_timeout_duration,
notifications_handler,
clipboard,
})),
})
}
pub async fn run(
self,
listener: tokio::net::UnixListener,
) -> anyhow::Result<()> {
pub enum Event {
Request(std::io::Result<tokio::net::UnixStream>),
Timeout(()),
Sync(()),
}
let notifications = self
.state
.lock()
.await
.notifications_handler
.get_channel()
.await;
let notifications =
tokio_stream::wrappers::UnboundedReceiverStream::new(
notifications,
)
.map(|message| match message {
notifications::Message::Logout => Event::Timeout(()),
notifications::Message::Sync => Event::Sync(()),
})
.boxed();
let mut stream = futures_util::stream::select_all([
tokio_stream::wrappers::UnixListenerStream::new(listener)
.map(Event::Request)
.boxed(),
tokio_stream::wrappers::UnboundedReceiverStream::new(
self.timer_r,
)
.map(Event::Timeout)
.boxed(),
tokio_stream::wrappers::UnboundedReceiverStream::new(
self.sync_timer_r,
)
.map(Event::Sync)
.boxed(),
notifications,
]);
while let Some(event) = stream.next().await {
match event {
Event::Request(res) => {
let mut sock = crate::sock::Sock::new(
res.context("failed to accept incoming connection")?,
);
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();
}
});
}
Event::Timeout(()) => {
self.state.lock().await.clear();
}
Event::Sync(()) => {
let state = self.state.clone();
tokio::spawn(async move {
// this could fail if we aren't logged in, but we
// don't care about that
if let Err(e) =
crate::actions::sync(None, state.clone()).await
{
eprintln!("failed to sync: {e:#}");
}
});
self.state.lock().await.set_sync_timeout();
}
}
}
Ok(())
}
}
async fn handle_request(
sock: &mut crate::sock::Sock,
state: std::sync::Arc<tokio::sync::Mutex<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(Some(sock), state.clone()).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::ClipboardStore { text } => {
crate::actions::clipboard_store(sock, state.clone(), text)
.await?;
true
}
rbw::protocol::Action::Quit => std::process::exit(0),
rbw::protocol::Action::Version => {
crate::actions::version(sock).await?;
true
}
};
if set_timeout {
state.lock().await.set_timeout();
}
Ok(())
}
|
