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use std::sync::{Arc, Mutex};
use std::task::{Context, Poll};
use anyhow::Result;
use boitalettres::server::accept::addr::AddrStream;
use boitalettres::errors::Error as BalError;
use boitalettres::proto::{Request, Response};
use futures::future::BoxFuture;
use imap_codec::types::command::CommandBody;
use tower::Service;
use crate::command;
use crate::login::Credentials;
use crate::mailstore::Mailstore;
use crate::mailbox::Mailbox;
pub struct Instance {
pub mailstore: Arc<Mailstore>,
}
impl Instance {
pub fn new(mailstore: Arc<Mailstore>) -> Self {
Self { mailstore }
}
}
impl<'a> Service<&'a AddrStream> for Instance {
type Response = Connection;
type Error = anyhow::Error;
type Future = BoxFuture<'static, Result<Self::Response>>;
fn poll_ready(&mut self, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
Poll::Ready(Ok(()))
}
fn call(&mut self, addr: &'a AddrStream) -> Self::Future {
tracing::info!(remote_addr = %addr.remote_addr, local_addr = %addr.local_addr, "accept");
let ms = self.mailstore.clone();
Box::pin(async { Ok(Connection::new(ms)) })
}
}
pub struct Session {
pub creds: Option<Credentials>,
pub selected: Option<Mailbox>,
}
pub struct Connection {
pub mailstore: Arc<Mailstore>,
pub session: Arc<Mutex<Session>>,
}
impl Connection {
pub fn new(mailstore: Arc<Mailstore>) -> Self {
Self { mailstore, session: Arc::new(Mutex::new(Session { creds: None, selected: None, })) }
}
}
impl Service<Request> for Connection {
type Response = Response;
type Error = BalError;
type Future = BoxFuture<'static, Result<Self::Response, Self::Error>>;
fn poll_ready(&mut self, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
Poll::Ready(Ok(()))
}
fn call(&mut self, req: Request) -> Self::Future {
tracing::debug!("Got request: {:#?}", req);
let cmd = command::Command::new(req.tag, self.mailstore.clone(), self.session.clone());
Box::pin(async move {
match req.body {
CommandBody::Capability => cmd.capability().await,
CommandBody::Login { username, password } => cmd.login(username, password).await,
CommandBody::Lsub { reference, mailbox_wildcard } => cmd.lsub(reference, mailbox_wildcard).await,
CommandBody::List { reference, mailbox_wildcard } => cmd.list(reference, mailbox_wildcard).await,
CommandBody::Select { mailbox } => cmd.select(mailbox).await,
CommandBody::Fetch { sequence_set, attributes, uid } => cmd.fetch(sequence_set, attributes, uid).await,
_ => Response::bad("Error in IMAP command received by server."),
}
})
}
}
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