Nuke the original imap impls
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GPG key ID:
BDA47A31A3C8EE6B
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@ -9,9 +9,13 @@ Goals:
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- Never have to actually close the application.
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- Handles email, calendar, and address books using open standards.
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- Unified "feed" that any app can submit to.
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- Hot-reload on-disk config.
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Stretch goals:
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- Unified "feed" that any app can submit to.
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- Submit notifications to gotify-shaped notification servers.
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- RSS aggregator.
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- IRC client??
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Credits
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-------
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@ -10,6 +10,13 @@ pub enum Response {
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},
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}
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impl FromStr for Response {
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type Err = anyhow::Error;
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fn from_str(s: &str) -> Result<Self, Self::Err> {
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todo!()
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}
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}
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pub enum Capability {
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Imap4rev1,
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Auth(String),
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231
src/mail/imap.rs
231
src/mail/imap.rs
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@ -1,231 +0,0 @@
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use std::collections::HashMap;
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use std::fmt::Display;
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use std::sync::Arc;
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use anyhow::Result;
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use futures::{
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future::{self, Either},
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pin_mut,
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sink::{Sink, SinkExt},
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stream::{Stream, StreamExt},
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};
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use panorama_imap::{
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builders::command::Command,
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parser::parse_response,
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types::{Capability, RequestId, Response, ResponseCode, State, Status},
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};
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use tokio::{net::TcpStream, sync::mpsc};
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use tokio_rustls::{rustls::ClientConfig, webpki::DNSNameRef, TlsConnector};
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use tokio_util::codec::{Decoder, LinesCodec, LinesCodecError};
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use crate::config::ImapConfig;
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pub async fn open_imap_connection(config: ImapConfig) -> Result<()> {
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debug!(
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"Opening imap connection to {}:{}",
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config.server, config.port
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);
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let server = config.server.as_str();
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let port = config.port;
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let client = TcpStream::connect((server, port)).await?;
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let codec = LinesCodec::new();
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let framed = codec.framed(client);
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let mut state = State::NotAuthenticated;
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let (sink, stream) = framed.split::<String>();
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let result = listen_loop(config.clone(), &mut state, sink, stream, false).await?;
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if let LoopExit::NegotiateTls(stream, sink) = result {
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debug!("negotiating tls");
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let mut tls_config = ClientConfig::new();
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tls_config
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.root_store
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.add_server_trust_anchors(&webpki_roots::TLS_SERVER_ROOTS);
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let tls_config = TlsConnector::from(Arc::new(tls_config));
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let dnsname = DNSNameRef::try_from_ascii_str(server).unwrap();
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// reconstruct the original stream
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let stream = stream.reunite(sink)?.into_inner();
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// let stream = TcpStream::connect((server, port)).await?;
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let stream = tls_config.connect(dnsname, stream).await?;
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let codec = LinesCodec::new();
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let framed = codec.framed(stream);
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let (sink, stream) = framed.split::<String>();
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listen_loop(config.clone(), &mut state, sink, stream, true).await?;
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}
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Ok(())
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}
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/// Action that should be taken after the connection loop quits.
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enum LoopExit<S, S2> {
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/// Used in case the STARTTLS command is issued; perform TLS negotiation on top of the current
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/// stream.
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///
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/// S and S2 are stream and sink types, respectively.
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NegotiateTls(S, S2),
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Closed,
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}
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async fn listen_loop<S, S2>(
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config: ImapConfig,
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st: &mut State,
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sink: S2,
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mut stream: S,
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with_ssl: bool,
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) -> Result<LoopExit<S, S2>>
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where
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S: Stream<Item = Result<String, LinesCodecError>> + Unpin,
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S2: Sink<String> + Unpin,
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S2::Error: Display,
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{
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let (tx, mut rx) = mpsc::unbounded_channel::<()>();
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let mut cmd_mgr = CommandManager::new(sink);
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if with_ssl {
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let cmd = Command {
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args: b"CAPABILITY".to_vec(),
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next_state: Some(State::Authenticated),
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};
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cmd_mgr.send(cmd, |_| {}).await?;
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}
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loop {
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let fut1 = stream.next();
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let fut2 = rx.recv();
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pin_mut!(fut1);
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pin_mut!(fut2);
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debug!("waiting for next select");
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match future::select(fut1, fut2).await {
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Either::Left((line, _)) => {
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let mut line = match line {
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Some(v) => v?,
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None => break,
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};
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line += "\r\n";
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let (_, resp) = match parse_response(line.as_bytes()) {
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Ok(v) => v,
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Err(e) => bail!(e.to_string()),
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};
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debug!("<<< {:?}", resp);
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match st {
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State::Authenticated => {}
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State::NotAuthenticated => match resp {
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Response::Data {
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status: Status::Ok,
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code: Some(ResponseCode::Capabilities(caps)),
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..
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} => {
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if !with_ssl {
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// prepare to do TLS negotiation
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let mut has_starttls = false;
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for cap in caps {
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if let Capability::Atom("STARTTLS") = cap {
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has_starttls = true;
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}
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}
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if has_starttls {
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let cmd = Command {
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args: b"STARTTLS".to_vec(),
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next_state: None,
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};
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let tx = tx.clone();
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cmd_mgr
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.send(cmd, move |_| {
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tx.send(()).unwrap();
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})
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.await?;
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}
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}
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}
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Response::Capabilities(_caps) => {
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if with_ssl {
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// send authentication information
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let cmd = Command {
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args: format!("LOGIN {} {}", config.username, config.password)
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.as_bytes()
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.to_vec(),
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next_state: Some(State::Authenticated),
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};
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cmd_mgr.send(cmd, |_| {}).await?;
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}
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}
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Response::Done { tag, code, .. } => {
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cmd_mgr.process_done(tag, code)?;
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}
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_ => {}
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},
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_ => {}
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}
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}
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Either::Right((_, _)) => {
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debug!("ENCOUNTERED EXIT");
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let sink = cmd_mgr.decompose();
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return Ok(LoopExit::NegotiateTls(stream, sink));
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}
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}
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}
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Ok(LoopExit::Closed)
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}
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type InFlightFunc = Box<dyn Fn(Option<ResponseCode>) + Send>;
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/// A struct in charge of managing multiple in-flight commands.
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struct CommandManager<S> {
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tag_idx: usize,
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in_flight: HashMap<String, InFlightFunc>,
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sink: S,
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}
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impl<S> CommandManager<S>
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where
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S: Sink<String> + Unpin,
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{
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pub fn new(sink: S) -> Self {
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CommandManager {
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tag_idx: 0,
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in_flight: HashMap::new(),
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sink,
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}
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}
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pub fn decompose(self) -> S {
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self.sink
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}
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pub async fn send(
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&mut self,
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cmd: Command,
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cb: impl Fn(Option<ResponseCode>) + Send + 'static,
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) -> Result<()> {
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let tag_idx = self.tag_idx;
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self.tag_idx += 1;
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let cb = Box::new(cb);
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let tag_str = format!("t{}", tag_idx);
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let cmd_str = std::str::from_utf8(&cmd.args)?;
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let full_str = format!("{} {}", tag_str, cmd_str);
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self.in_flight.insert(tag_str.clone(), cb);
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debug!(">>> {:?}", full_str);
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self.sink
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.send(full_str)
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.await
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.map_err(|_| anyhow!("failed to send command"))
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}
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pub fn process_done(&mut self, id: RequestId, code: Option<ResponseCode>) -> Result<()> {
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let name = std::str::from_utf8(id.as_bytes())?;
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if let Some(cb) = self.in_flight.remove(name) {
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cb(code);
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}
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Ok(())
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}
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}
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@ -1,177 +0,0 @@
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// let's try this again
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use std::collections::HashMap;
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use std::sync::Arc;
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use anyhow::Result;
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use futures::{
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future::{self, BoxFuture, Future, FutureExt, TryFuture},
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sink::{Sink, SinkExt},
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stream::{Stream, StreamExt},
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};
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use panorama_imap::builders::command::Command;
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use parking_lot::Mutex;
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use tokio::{
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io::{AsyncRead, AsyncWrite},
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net::TcpStream,
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sync::{oneshot, Notify},
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};
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use tokio_rustls::{rustls::ClientConfig, webpki::DNSNameRef, TlsConnector};
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use tokio_util::codec::{Decoder, Framed, FramedRead, FramedWrite, LinesCodec, LinesCodecError};
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use crate::config::{ImapConfig, TlsMethod};
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pub async fn open_imap_connection(config: ImapConfig) -> Result<()> {
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let server = config.server.as_str();
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let port = config.port;
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let stream = TcpStream::connect((server, port)).await?;
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debug!("hellosu");
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match config.tls {
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TlsMethod::Off => begin_authentication(config, stream).await,
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TlsMethod::On => {
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let stream = perform_tls_negotiation(server.to_owned(), stream).await?;
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begin_authentication(config, stream).await
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}
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TlsMethod::Starttls => {
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let (stream, cmd_mgr) = CommandManager::new(stream);
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let flights = cmd_mgr.flights();
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// listen(stream, flights).await?;
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// async move {
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// let mut cmd_mgr = cmd_mgr;
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// cmd_mgr.capabilities().await;
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// }
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// .await;
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todo!()
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}
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}
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}
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/// Performs TLS negotiation, using the webpki_roots and verifying the server name
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#[instrument(skip(server_name, stream))]
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async fn perform_tls_negotiation(
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server_name: impl AsRef<str>,
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stream: impl AsyncRead + AsyncWrite + Unpin,
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) -> Result<impl AsyncRead + AsyncWrite> {
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let server_name = server_name.as_ref();
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let mut tls_config = ClientConfig::new();
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tls_config
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.root_store
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.add_server_trust_anchors(&webpki_roots::TLS_SERVER_ROOTS);
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let tls_config = TlsConnector::from(Arc::new(tls_config));
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let dnsname = DNSNameRef::try_from_ascii_str(server_name).unwrap();
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let stream = tls_config.connect(dnsname, stream).await?;
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Ok(stream)
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}
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async fn fetch_capabilities(stream: impl AsyncRead + AsyncWrite) -> Result<Vec<String>> {
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let codec = LinesCodec::new();
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let framed = codec.framed(stream);
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todo!()
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}
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#[instrument(skip(config, stream))]
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async fn begin_authentication(
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config: ImapConfig,
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stream: impl AsyncRead + AsyncWrite,
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) -> Result<()> {
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Ok(())
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}
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pub async fn listen(
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mut stream: impl Stream<Item = Result<String, LinesCodecError>> + Unpin,
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in_flight: InFlight,
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) -> Result<()> {
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debug!("listening for messages from server");
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loop {
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let line = match stream.next().await {
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Some(v) => v?,
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None => break,
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};
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debug!("line: {:?}", line);
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let mut parts = line.split(' ');
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let tag = parts.next().unwrap().parse()?; // TODO: handle empty
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{
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let mut in_flight = in_flight.lock();
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if let Some(sender) = in_flight.remove(&tag) {
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sender.send(()).unwrap();
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}
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}
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}
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Ok(())
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}
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// trait ImapStream: AsyncRead + AsyncWrite + Send + Unpin {}
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// impl<T: AsyncRead + AsyncWrite + Send + Unpin> ImapStream for T {}
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trait ImapSink: Sink<String, Error = LinesCodecError> + Unpin {}
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impl<T: Sink<String, Error = LinesCodecError> + Unpin> ImapSink for T {}
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type InFlightMap = HashMap<usize, oneshot::Sender<()>>;
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type InFlight = Arc<Mutex<InFlightMap>>;
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struct CommandManager<'a> {
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id: usize,
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in_flight: Arc<Mutex<HashMap<usize, oneshot::Sender<()>>>>,
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sink: Box<dyn ImapSink + 'a>,
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}
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impl<'a> CommandManager<'a> {
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pub fn new(
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stream: impl AsyncRead + AsyncWrite + 'a,
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) -> (impl Stream<Item = Result<String, LinesCodecError>>, Self) {
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let codec = LinesCodec::new();
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let framed = codec.framed(stream);
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let (framed_sink, framed_stream) = framed.split();
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let cmd_mgr = CommandManager {
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id: 0,
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in_flight: Arc::new(Mutex::new(HashMap::new())),
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sink: Box::new(framed_sink),
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};
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(framed_stream, cmd_mgr)
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}
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pub fn flights(&self) -> Arc<Mutex<HashMap<usize, oneshot::Sender<()>>>> {
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self.in_flight.clone()
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}
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pub fn decompose(self) -> impl ImapSink + Unpin + 'a {
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self.sink
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}
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pub async fn capabilities(&mut self) -> Result<Vec<String>> {
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self.exec(Command {
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args: b"CAPABILITY".to_vec(),
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next_state: None,
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})
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.await?;
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Ok(vec![])
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}
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pub async fn exec(&mut self, command: Command) -> Result<()> {
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let id = self.id;
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self.id += 1;
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let cmd_str = String::from_utf8(command.args)?;
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self.sink.send(cmd_str).await?;
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let (tx, rx) = oneshot::channel();
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{
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let mut in_flight = self.in_flight.lock();
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in_flight.insert(id, tx);
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}
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rx.await?;
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Ok(())
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}
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}
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@ -1,8 +1,5 @@
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//! Mail
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mod imap;
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mod imap2;
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use anyhow::Result;
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use futures::stream::StreamExt;
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use panorama_imap::{
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@ -14,8 +11,6 @@ use tokio_stream::wrappers::WatchStream;
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use crate::config::{Config, ConfigWatcher, MailAccountConfig, TlsMethod};
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use self::imap2::open_imap_connection;
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/// Command sent to the mail thread by something else (i.e. UI)
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pub enum MailCommand {
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/// Refresh the list
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@ -30,7 +25,7 @@ pub async fn run_mail(
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mut config_watcher: ConfigWatcher,
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_cmd_in: UnboundedReceiver<MailCommand>,
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) -> Result<()> {
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let mut curr_conn: Option<JoinHandle<_>> = None;
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let mut curr_conn: Vec<JoinHandle<_>> = Vec::new();
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// let mut config_watcher = WatchStream::new(config_watcher);
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loop {
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@ -43,13 +38,13 @@ pub async fn run_mail(
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// TODO: gracefully shut down connection
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// just gonna drop the connection for now
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if let Some(curr_conn) = curr_conn.take() {
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debug!("dropping connection...");
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curr_conn.abort();
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debug!("dropping all connections...");
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for conn in curr_conn.drain(0..) {
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conn.abort();
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}
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let handle = tokio::spawn(async {
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for acct in config.mail_accounts.into_iter() {
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for acct in config.mail_accounts.into_iter() {
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let handle = tokio::spawn(async move {
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debug!("opening imap connection for {:?}", acct);
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match imap_main(acct).await {
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Ok(_) => {}
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|
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@ -57,11 +52,9 @@ pub async fn run_mail(
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error!("IMAP Error: {}", err);
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}
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}
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// open_imap_connection(acct.imap).await.unwrap();
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}
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||||
});
|
||||
|
||||
curr_conn = Some(handle);
|
||||
});
|
||||
curr_conn.push(handle);
|
||||
}
|
||||
}
|
||||
|
||||
Ok(())
|
||||
|
|
@ -69,31 +62,32 @@ pub async fn run_mail(
|
|||
|
||||
/// The main sequence of steps for the IMAP thread to follow
|
||||
async fn imap_main(acct: MailAccountConfig) -> Result<()> {
|
||||
let builder: ClientConfig = ClientBuilder::default()
|
||||
.hostname(acct.imap.server.clone())
|
||||
.port(acct.imap.port)
|
||||
.tls(matches!(acct.imap.tls, TlsMethod::On))
|
||||
.build()
|
||||
.map_err(|err| anyhow!("err: {}", err))?;
|
||||
// loop ensures that the connection is retried after it dies
|
||||
loop {
|
||||
let builder: ClientConfig = ClientBuilder::default()
|
||||
.hostname(acct.imap.server.clone())
|
||||
.port(acct.imap.port)
|
||||
.tls(matches!(acct.imap.tls, TlsMethod::On))
|
||||
.build()
|
||||
.map_err(|err| anyhow!("err: {}", err))?;
|
||||
|
||||
debug!("connecting to {}:{}", &acct.imap.server, acct.imap.port);
|
||||
let unauth = builder.open().await?;
|
||||
debug!("connecting to {}:{}", &acct.imap.server, acct.imap.port);
|
||||
let unauth = builder.open().await?;
|
||||
|
||||
let mut unauth = if matches!(acct.imap.tls, TlsMethod::Starttls) {
|
||||
debug!("attempting to upgrade");
|
||||
let client = unauth.upgrade().await?;
|
||||
debug!("upgrade successful");
|
||||
client
|
||||
} else {
|
||||
unauth
|
||||
};
|
||||
let mut unauth = if matches!(acct.imap.tls, TlsMethod::Starttls) {
|
||||
debug!("attempting to upgrade");
|
||||
let client = unauth.upgrade().await?;
|
||||
debug!("upgrade successful");
|
||||
client
|
||||
} else {
|
||||
unauth
|
||||
};
|
||||
|
||||
debug!("preparing to auth");
|
||||
// check if the authentication method is supported
|
||||
unauth.capabilities().await?;
|
||||
debug!("preparing to auth");
|
||||
// check if the authentication method is supported
|
||||
unauth.capabilities().await?;
|
||||
|
||||
// debug!("sending CAPABILITY");
|
||||
// let result = unauth.capabilities().await?;
|
||||
|
||||
Ok(())
|
||||
// debug!("sending CAPABILITY");
|
||||
// let result = unauth.capabilities().await?;
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue