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Update imap-flow, clean IDLE

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This commit is contained in:
Quentin 2024-02-22 17:30:40 +01:00
parent 3f204b102a
commit 2adf73dd8e
Signed by: quentin
GPG key ID: E9602264D639FF68
13 changed files with 181 additions and 126 deletions
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6
Cargo.lock generated
View file

@ -1965,7 +1965,7 @@ dependencies = [
[[package]]
name = "imap-codec"
version = "2.0.0"
source = "git+https://github.com/superboum/imap-codec?branch=custom/aerogramme#0adcc244282c64cc7874ffa9cd22e4a451ee19f8"
source = "git+https://github.com/superboum/imap-codec?branch=custom/aerogramme#d8a5afc03fb771232e94c73af6a05e79dc80bbed"
dependencies = [
"abnf-core",
"base64 0.21.7",
@ -1980,7 +1980,7 @@ dependencies = [
[[package]]
name = "imap-flow"
version = "0.1.0"
source = "git+https://github.com/superboum/imap-flow.git?branch=custom/aerogramme#2bea066da1e09ad04bb5fb71b0dd8d6e5d9e3d19"
source = "git+https://github.com/duesee/imap-flow.git?branch=main#68c1da5d1c56dbe543d9736de9683259d1d28191"
dependencies = [
"bounded-static",
"bytes",
@ -1994,7 +1994,7 @@ dependencies = [
[[package]]
name = "imap-types"
version = "2.0.0"
source = "git+https://github.com/superboum/imap-codec?branch=custom/aerogramme#0adcc244282c64cc7874ffa9cd22e4a451ee19f8"
source = "git+https://github.com/superboum/imap-codec?branch=custom/aerogramme#d8a5afc03fb771232e94c73af6a05e79dc80bbed"
dependencies = [
"base64 0.21.7",
"bounded-static",

2
Cargo.toml
View file

@ -64,7 +64,7 @@ eml-codec = "0.1.2"
smtp-message = { git = "http://github.com/Alexis211/kannader", branch = "feature/lmtp" }
smtp-server = { git = "http://github.com/Alexis211/kannader", branch = "feature/lmtp" }
imap-codec = { version = "2.0.0", features = ["bounded-static", "ext_condstore_qresync"] }
imap-flow = { git = "https://github.com/superboum/imap-flow.git", branch = "custom/aerogramme" }
imap-flow = { git = "https://github.com/duesee/imap-flow.git", branch = "main" }
thiserror = "1.0.56"
[dev-dependencies]

4
src/imap/capability.rs
View file

@ -1,5 +1,5 @@
use imap_codec::imap_types::command::{FetchModifier, SelectExamineModifier, StoreModifier};
use imap_codec::imap_types::core::NonEmptyVec;
use imap_codec::imap_types::core::Vec1;
use imap_codec::imap_types::extensions::enable::{CapabilityEnable, Utf8Kind};
use imap_codec::imap_types::response::Capability;
use std::collections::HashSet;
@ -49,7 +49,7 @@ impl Default for ServerCapability {
}
impl ServerCapability {
pub fn to_vec(&self) -> NonEmptyVec<Capability<'static>> {
pub fn to_vec(&self) -> Vec1<Capability<'static>> {
self.0
.iter()
.map(|v| v.clone())

4
src/imap/command/authenticated.rs
View file

@ -6,7 +6,7 @@ use anyhow::{anyhow, bail, Result};
use imap_codec::imap_types::command::{
Command, CommandBody, ListReturnItem, SelectExamineModifier,
};
use imap_codec::imap_types::core::{Atom, Literal, NonEmptyVec, QuotedChar};
use imap_codec::imap_types::core::{Atom, Literal, Vec1, QuotedChar};
use imap_codec::imap_types::datetime::DateTime;
use imap_codec::imap_types::extensions::enable::CapabilityEnable;
use imap_codec::imap_types::flag::{Flag, FlagNameAttribute};
@ -584,7 +584,7 @@ impl<'a> AuthenticatedContext<'a> {
fn enable(
self,
cap_enable: &NonEmptyVec<CapabilityEnable<'static>>,
cap_enable: &Vec1<CapabilityEnable<'static>>,
) -> Result<(Response<'static>, flow::Transition)> {
let mut response_builder = Response::build().to_req(self.req);
let capabilities = self.client_capabilities.try_enable(cap_enable.as_ref());

14
src/imap/command/selected.rs
View file

@ -3,7 +3,7 @@ use std::sync::Arc;
use anyhow::Result;
use imap_codec::imap_types::command::{Command, CommandBody, FetchModifier, StoreModifier};
use imap_codec::imap_types::core::Charset;
use imap_codec::imap_types::core::{Vec1, Charset};
use imap_codec::imap_types::fetch::MacroOrMessageDataItemNames;
use imap_codec::imap_types::flag::{Flag, StoreResponse, StoreType};
use imap_codec::imap_types::mailbox::Mailbox as MailboxCodec;
@ -54,11 +54,12 @@ pub async fn dispatch<'a>(
ctx.fetch(sequence_set, macro_or_item_names, modifiers, uid)
.await
}
//@FIXME SearchKey::And is a legacy hack, should be refactored
CommandBody::Search {
charset,
criteria,
uid,
} => ctx.search(charset, criteria, uid).await,
} => ctx.search(charset, &SearchKey::And(criteria.clone()), uid).await,
CommandBody::Expunge {
// UIDPLUS (rfc4315)
uid_sequence_set,
@ -88,15 +89,6 @@ pub async fn dispatch<'a>(
// UNSELECT extension (rfc3691)
CommandBody::Unselect => ctx.unselect().await,
// IDLE extension (rfc2177)
CommandBody::Idle => Ok((
Response::build()
.to_req(ctx.req)
.message("DUMMY command due to anti-pattern in the code")
.ok()?,
flow::Transition::Idle(ctx.req.tag.clone(), tokio::sync::Notify::new()),
)),
// In selected mode, we fallback to authenticated when needed
_ => {
authenticated::dispatch(authenticated::AuthenticatedContext {

11
src/imap/flow.rs
View file

@ -1,11 +1,12 @@
use std::error::Error as StdError;
use std::fmt;
use std::sync::Arc;
use tokio::sync::Notify;
use imap_codec::imap_types::core::Tag;
use crate::imap::mailbox_view::MailboxView;
use crate::mail::user::User;
use imap_codec::imap_types::core::Tag;
#[derive(Debug)]
pub enum Error {
@ -31,6 +32,14 @@ pub enum State {
),
Logout,
}
impl State {
pub fn notify(&self) -> Option<Arc<Notify>> {
match self {
Self::Idle(_, _, _, _, anotif) => Some(anotif.clone()),
_ => None,
}
}
}
impl fmt::Display for State {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
use State::*;

6
src/imap/mailbox_view.rs
View file

@ -6,7 +6,7 @@ use anyhow::{anyhow, Error, Result};
use futures::stream::{StreamExt, TryStreamExt};
use imap_codec::imap_types::core::Charset;
use imap_codec::imap_types::core::{Charset, Vec1};
use imap_codec::imap_types::fetch::MessageDataItem;
use imap_codec::imap_types::flag::{Flag, FlagFetch, FlagPerm, StoreResponse, StoreType};
use imap_codec::imap_types::response::{Code, CodeOther, Data, Status};
@ -629,7 +629,7 @@ impl MailboxView {
mod tests {
use super::*;
use imap_codec::encode::Encoder;
use imap_codec::imap_types::core::NonEmptyVec;
use imap_codec::imap_types::core::Vec1;
use imap_codec::imap_types::fetch::Section;
use imap_codec::imap_types::fetch::{MacroOrMessageDataItemNames, MessageDataItemName};
use imap_codec::imap_types::response::Response;
@ -749,7 +749,7 @@ mod tests {
let test_repr = Response::Data(Data::Fetch {
seq: NonZeroU32::new(1).unwrap(),
items: NonEmptyVec::from(MessageDataItem::Body(mime_view::bodystructure(
items: Vec1::from(MessageDataItem::Body(mime_view::bodystructure(
&message.child,
false,
)?)),

12
src/imap/mime_view.rs
View file

@ -8,7 +8,7 @@ use imap_codec::imap_types::body::{
BasicFields, Body as FetchBody, BodyStructure, MultiPartExtensionData, SinglePartExtensionData,
SpecificFields,
};
use imap_codec::imap_types::core::{AString, IString, NString, NonEmptyVec};
use imap_codec::imap_types::core::{AString, IString, NString, Vec1};
use imap_codec::imap_types::fetch::{Part as FetchPart, Section as FetchSection};
use eml_codec::{
@ -141,8 +141,8 @@ impl<'a> NodeMime<'a> {
enum SubsettedSection<'a> {
Part,
Header,
HeaderFields(&'a NonEmptyVec<AString<'a>>),
HeaderFieldsNot(&'a NonEmptyVec<AString<'a>>),
HeaderFields(&'a Vec1<AString<'a>>),
HeaderFieldsNot(&'a Vec1<AString<'a>>),
Text,
Mime,
}
@ -238,7 +238,7 @@ impl<'a> SelectedMime<'a> {
/// case-insensitive but otherwise exact.
fn header_fields(
&self,
fields: &'a NonEmptyVec<AString<'a>>,
fields: &'a Vec1<AString<'a>>,
invert: bool,
) -> Result<ExtractedFull<'a>> {
// Build a lowercase ascii hashset with the fields to fetch
@ -398,8 +398,8 @@ impl<'a> NodeMult<'a> {
.filter_map(|inner| NodeMime(&inner).structure(is_ext).ok())
.collect::<Vec<_>>();
NonEmptyVec::validate(&inner_bodies)?;
let bodies = NonEmptyVec::unvalidated(inner_bodies);
Vec1::validate(&inner_bodies)?;
let bodies = Vec1::unvalidated(inner_bodies);
Ok(BodyStructure::Multi {
bodies,

79
src/imap/mod.rs
View file

@ -15,7 +15,7 @@ mod session;
use std::net::SocketAddr;
use anyhow::{bail, Result};
use anyhow::{anyhow, bail, Result, Context};
use futures::stream::{FuturesUnordered, StreamExt};
use tokio::net::TcpListener;
@ -144,13 +144,6 @@ use tokio_util::bytes::BytesMut;
const PIPELINABLE_COMMANDS: usize = 64;
#[derive(Debug)]
enum LoopMode {
Quit,
Interactive,
Idle(BytesMut, Arc<Notify>),
}
// @FIXME a full refactor of this part of the code will be needed sooner or later
struct NetLoop {
ctx: ClientContext,
@ -163,7 +156,7 @@ impl NetLoop {
async fn handler(ctx: ClientContext, sock: AnyStream) {
let addr = ctx.addr.clone();
let nl = match Self::new(ctx, sock).await {
let mut nl = match Self::new(ctx, sock).await {
Ok(nl) => {
tracing::debug!(addr=?addr, "netloop successfully initialized");
nl
@ -241,27 +234,15 @@ impl NetLoop {
tracing::info!("runner is quitting");
}
async fn core(mut self) -> Result<()> {
tracing::trace!("Starting the core loop");
let mut mode = LoopMode::Interactive;
async fn core(&mut self) -> Result<()> {
let mut maybe_idle: Option<Arc<Notify>> = None;
loop {
tracing::trace!(mode=?mode, "Core loop iter");
mode = match mode {
LoopMode::Interactive => self.interactive_mode().await?,
LoopMode::Idle(buff, stop) => self.idle_mode(buff, stop).await?,
LoopMode::Quit => break,
}
}
Ok(())
}
async fn interactive_mode(&mut self) -> Result<LoopMode> {
tokio::select! {
// Managing imap_flow stuff
srv_evt = self.server.progress() => match srv_evt? {
ServerFlowEvent::ResponseSent { handle: _handle, response } => {
match response {
Response::Status(Status::Bye(_)) => return Ok(LoopMode::Quit),
Response::Status(Status::Bye(_)) => return Ok(()),
_ => tracing::trace!("sent to {} content {:?}", self.ctx.addr, response),
}
},
@ -278,6 +259,24 @@ impl NetLoop {
}
}
},
ServerFlowEvent::IdleCommandReceived { tag } => {
match self.cmd_tx.try_send(Request::IdleStart(tag)) {
Ok(_) => (),
Err(mpsc::error::TrySendError::Full(_)) => {
self.server.enqueue_status(Status::bye(None, "Too fast").unwrap());
tracing::error!("client {:?} is sending commands too fast, closing.", self.ctx.addr);
}
_ => {
self.server.enqueue_status(Status::bye(None, "Internal session exited").unwrap());
tracing::error!("session task exited for {:?}, quitting", self.ctx.addr);
}
}
}
ServerFlowEvent::IdleDoneReceived => {
tracing::trace!("client sent DONE and want to stop IDLE");
maybe_idle.ok_or(anyhow!("Received IDLE done but not idling currently"))?.notify_one();
maybe_idle = None;
}
flow => {
self.server.enqueue_status(Status::bye(None, "Unsupported server flow event").unwrap());
tracing::error!("session task exited for {:?} due to unsupported flow {:?}", self.ctx.addr, flow);
@ -296,12 +295,31 @@ impl NetLoop {
}
self.server.enqueue_status(response.completion);
},
Some(ResponseOrIdle::StartIdle(stop)) => {
Some(ResponseOrIdle::IdleAccept(stop)) => {
tracing::trace!("Interactive, server agreed to switch in idle mode");
let cr = CommandContinuationRequest::basic(None, "Idling")?;
self.server.enqueue_continuation(cr);
self.cmd_tx.try_send(Request::Idle)?;
return Ok(LoopMode::Idle(BytesMut::new(), stop))
self.server.idle_accept(cr).or(Err(anyhow!("refused continuation for idle accept")))?;
self.cmd_tx.try_send(Request::IdlePoll)?;
if maybe_idle.is_some() {
bail!("Can't start IDLE if already idling");
}
maybe_idle = Some(stop);
},
Some(ResponseOrIdle::IdleEvent(elems)) => {
tracing::trace!("server imap session has some change to communicate to the client");
for body_elem in elems.into_iter() {
let _handle = match body_elem {
Body::Data(d) => self.server.enqueue_data(d),
Body::Status(s) => self.server.enqueue_status(s),
};
}
self.cmd_tx.try_send(Request::IdlePoll)?;
},
Some(ResponseOrIdle::IdleReject(response)) => {
tracing::trace!("inform client that session rejected idle");
self.server
.idle_reject(response.completion)
.or(Err(anyhow!("wrong reject command")))?;
},
None => {
self.server.enqueue_status(Status::bye(None, "Internal session exited").unwrap());
@ -317,9 +335,10 @@ impl NetLoop {
self.server.enqueue_status(Status::bye(None, "Server is being shutdown").unwrap());
},
};
Ok(LoopMode::Interactive)
}
}
/*
async fn idle_mode(&mut self, mut buff: BytesMut, stop: Arc<Notify>) -> Result<LoopMode> {
// Flush send
loop {
@ -398,5 +417,5 @@ impl NetLoop {
return Ok(LoopMode::Interactive)
},
};
}
}*/
}

4
src/imap/request.rs
View file

@ -1,7 +1,9 @@
use imap_codec::imap_types::command::Command;
use imap_codec::imap_types::core::Tag;
#[derive(Debug)]
pub enum Request {
ImapCommand(Command<'static>),
Idle,
IdleStart(Tag<'static>),
IdlePoll,
}

3
src/imap/response.rs
View file

@ -118,6 +118,7 @@ impl<'a> Response<'a> {
#[derive(Debug)]
pub enum ResponseOrIdle {
Response(Response<'static>),
StartIdle(Arc<Notify>),
IdleAccept(Arc<Notify>),
IdleReject(Response<'static>),
IdleEvent(Vec<Body<'static>>),
}

4
src/imap/search.rs
View file

@ -1,6 +1,6 @@
use std::num::{NonZeroU32, NonZeroU64};
use imap_codec::imap_types::core::NonEmptyVec;
use imap_codec::imap_types::core::Vec1;
use imap_codec::imap_types::search::{MetadataItemSearch, SearchKey};
use imap_codec::imap_types::sequence::{SeqOrUid, Sequence, SequenceSet};
@ -48,7 +48,7 @@ impl<'a> Criteria<'a> {
let mut new_vec = base.0.into_inner();
new_vec.extend_from_slice(ext.0.as_ref());
let seq = SequenceSet(
NonEmptyVec::try_from(new_vec)
Vec1::try_from(new_vec)
.expect("merging non empty vec lead to non empty vec"),
);
(seq, x)

48
src/imap/session.rs
View file

@ -4,8 +4,8 @@ use crate::imap::flow;
use crate::imap::request::Request;
use crate::imap::response::{Response, ResponseOrIdle};
use crate::login::ArcLoginProvider;
use anyhow::{anyhow, bail, Result};
use imap_codec::imap_types::command::Command;
use anyhow::{anyhow, bail, Result, Context};
use imap_codec::imap_types::{core::Tag, command::Command};
//-----
pub struct Instance {
@ -27,13 +27,44 @@ impl Instance {
pub async fn request(&mut self, req: Request) -> ResponseOrIdle {
match req {
Request::Idle => self.idle().await,
Request::IdleStart(tag) => self.idle_init(tag),
Request::IdlePoll => self.idle_poll().await,
Request::ImapCommand(cmd) => self.command(cmd).await,
}
}
pub async fn idle(&mut self) -> ResponseOrIdle {
match self.idle_happy().await {
pub fn idle_init(&mut self, tag: Tag<'static>) -> ResponseOrIdle {
// Build transition
//@FIXME the notifier should be hidden inside the state and thus not part of the transition!
let transition = flow::Transition::Idle(tag.clone(), tokio::sync::Notify::new());
// Try to apply the transition and get the stop notifier
let maybe_stop = self
.state
.apply(transition)
.context("IDLE transition failed")
.and_then(|_| self.state.notify().ok_or(anyhow!("IDLE state has no Notify object")));
// Build an appropriate response
match maybe_stop {
Ok(stop) => ResponseOrIdle::IdleAccept(stop),
Err(e) => {
tracing::error!(err=?e, "unable to init idle due to a transition error");
//ResponseOrIdle::IdleReject(tag)
let no = Response::build()
.tag(tag)
.message(
"Internal error, processing command triggered an illegal IMAP state transition",
)
.no()
.unwrap();
ResponseOrIdle::IdleReject(no)
}
}
}
pub async fn idle_poll(&mut self) -> ResponseOrIdle {
match self.idle_poll_happy().await {
Ok(r) => r,
Err(e) => {
tracing::error!(err=?e, "something bad happened in idle");
@ -42,7 +73,7 @@ impl Instance {
}
}
pub async fn idle_happy(&mut self) -> Result<ResponseOrIdle> {
pub async fn idle_poll_happy(&mut self) -> Result<ResponseOrIdle> {
let (mbx, tag, stop) = match &mut self.state {
flow::State::Idle(_, ref mut mbx, _, tag, stop) => (mbx, tag.clone(), stop.clone()),
_ => bail!("Invalid session state, can't idle"),
@ -128,10 +159,11 @@ impl Instance {
.bad()
.unwrap());
}
ResponseOrIdle::Response(resp)
match &self.state {
/*match &self.state {
flow::State::Idle(_, _, _, _, n) => ResponseOrIdle::StartIdle(n.clone()),
_ => ResponseOrIdle::Response(resp),
}
}*/
}
}