436 lines
20 KiB
Rust
436 lines
20 KiB
Rust
/*
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* meli - imap
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*
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* Copyright 2020 Manos Pitsidianakis
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*
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* This file is part of meli.
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*
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* meli is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* meli is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with meli. If not, see <http://www.gnu.org/licenses/>.
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*/
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use super::{ImapConnection, MailboxSelection, UID};
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use crate::backends::imap::protocol_parser::{
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generate_envelope_hash, FetchResponse, ImapLineSplit, RequiredResponses, UntaggedResponse,
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};
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use crate::backends::BackendMailbox;
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use crate::backends::{
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RefreshEvent,
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RefreshEventKind::{self, *},
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};
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use crate::email::Envelope;
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use crate::error::*;
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use std::convert::TryInto;
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impl ImapConnection {
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pub async fn process_untagged(&mut self, line: &[u8]) -> Result<bool> {
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macro_rules! try_fail {
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($mailbox_hash: expr, $($result:expr $(,)*)+) => {
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$(if let Err(err) = $result {
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self.uid_store.is_online.lock().unwrap().1 = Err(err.clone());
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debug!("failure: {}", err.to_string());
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self.add_refresh_event(RefreshEvent {
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account_hash: self.uid_store.account_hash,
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mailbox_hash: $mailbox_hash,
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kind: RefreshEventKind::Failure(err.clone()),
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});
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Err(err)
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} else { Ok(()) }?;)+
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};
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}
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let mailbox_hash = match self.stream.as_ref()?.current_mailbox {
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MailboxSelection::Select(h) | MailboxSelection::Examine(h) => h,
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MailboxSelection::None => return Ok(false),
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};
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let mailbox =
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std::clone::Clone::clone(&self.uid_store.mailboxes.lock().await[&mailbox_hash]);
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#[cfg(not(feature = "sqlite3"))]
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let mut cache_handle = super::cache::DefaultCache::get(self.uid_store.clone())?;
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#[cfg(feature = "sqlite3")]
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let mut cache_handle = super::cache::Sqlite3Cache::get(self.uid_store.clone())?;
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let mut response = Vec::with_capacity(8 * 1024);
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let untagged_response =
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match super::protocol_parser::untagged_responses(line).map(|(_, v, _)| v) {
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Ok(None) | Err(_) => {
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return Ok(false);
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}
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Ok(Some(r)) => r,
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};
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match untagged_response {
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UntaggedResponse::Bye { reason } => {
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self.uid_store.is_online.lock().unwrap().1 = Err(reason.into());
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}
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UntaggedResponse::Expunge(n) => {
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if self
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.uid_store
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.msn_index
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.lock()
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.unwrap()
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.get(&mailbox_hash)
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.map(|i| i.len() < n.try_into().unwrap())
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.unwrap_or(true)
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{
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debug!(
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"Received expunge {} but mailbox msn index is {:?}",
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n,
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self.uid_store.msn_index.lock().unwrap().get(&mailbox_hash)
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);
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return Ok(true);
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}
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let deleted_uid = self
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.uid_store
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.msn_index
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.lock()
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.unwrap()
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.entry(mailbox_hash)
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.or_default()
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.remove(n.try_into().unwrap());
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debug!("expunge {}, UID = {}", n, deleted_uid);
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let deleted_hash: crate::email::EnvelopeHash = match self
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.uid_store
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.uid_index
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.lock()
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.unwrap()
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.remove(&(mailbox_hash, deleted_uid))
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{
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Some(v) => v,
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None => return Ok(true),
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};
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self.uid_store
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.hash_index
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.lock()
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.unwrap()
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.remove(&deleted_hash);
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let mut event: [(UID, RefreshEvent); 1] = [(
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deleted_uid,
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RefreshEvent {
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account_hash: self.uid_store.account_hash,
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mailbox_hash,
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kind: Remove(deleted_hash),
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},
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)];
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if self.uid_store.keep_offline_cache {
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cache_handle.update(mailbox_hash, &event)?;
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}
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self.add_refresh_event(std::mem::replace(
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&mut event[0].1,
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RefreshEvent {
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account_hash: self.uid_store.account_hash,
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mailbox_hash,
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kind: Rescan,
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},
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));
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}
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UntaggedResponse::Exists(n) => {
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debug!("exists {}", n);
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try_fail!(
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mailbox_hash,
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self.send_command(format!("FETCH {} (UID FLAGS RFC822)", n).as_bytes()).await
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self.read_response(&mut response, RequiredResponses::FETCH_REQUIRED).await
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);
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match super::protocol_parser::fetch_responses(&response) {
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Ok((_, v, _)) => {
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'fetch_responses: for FetchResponse {
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uid, flags, body, ..
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} in v
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{
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if uid.is_none() || flags.is_none() || body.is_none() {
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continue;
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}
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let uid = uid.unwrap();
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if self
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.uid_store
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.uid_index
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.lock()
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.unwrap()
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.contains_key(&(mailbox_hash, uid))
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{
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continue 'fetch_responses;
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}
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let env_hash = generate_envelope_hash(&mailbox.imap_path(), &uid);
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self.uid_store
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.msn_index
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.lock()
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.unwrap()
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.entry(mailbox_hash)
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.or_default()
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.push(uid);
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if let Ok(mut env) =
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Envelope::from_bytes(body.unwrap(), flags.as_ref().map(|&(f, _)| f))
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{
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env.set_hash(env_hash);
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self.uid_store
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.hash_index
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.lock()
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.unwrap()
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.insert(env_hash, (uid, mailbox_hash));
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self.uid_store
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.uid_index
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.lock()
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.unwrap()
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.insert((mailbox_hash, uid), env_hash);
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if let Some((_, keywords)) = flags {
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let mut tag_lck = self.uid_store.tag_index.write().unwrap();
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for f in keywords {
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let hash = tag_hash!(f);
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if !tag_lck.contains_key(&hash) {
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tag_lck.insert(hash, f);
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}
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env.labels_mut().push(hash);
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}
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}
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debug!(
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"Create event {} {} {}",
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env.hash(),
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env.subject(),
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mailbox.path(),
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);
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if !env.is_seen() {
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mailbox.unseen.lock().unwrap().insert_new(env.hash());
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}
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mailbox.exists.lock().unwrap().insert_new(env.hash());
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let mut event: [(UID, RefreshEvent); 1] = [(
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uid,
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RefreshEvent {
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account_hash: self.uid_store.account_hash,
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mailbox_hash,
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kind: Create(Box::new(env)),
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},
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)];
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if self.uid_store.keep_offline_cache {
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cache_handle.update(mailbox_hash, &event)?;
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}
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self.add_refresh_event(std::mem::replace(
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&mut event[0].1,
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RefreshEvent {
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account_hash: self.uid_store.account_hash,
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mailbox_hash,
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kind: Rescan,
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},
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));
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}
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}
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}
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Err(e) => {
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debug!(e);
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}
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}
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}
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UntaggedResponse::Recent(_) => {
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try_fail!(
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mailbox_hash,
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self.send_command(b"UID SEARCH RECENT").await
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self.read_response(&mut response, RequiredResponses::SEARCH).await
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);
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match super::protocol_parser::search_results_raw(&response)
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.map(|(_, v)| v)
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.map_err(MeliError::from)
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{
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Ok(&[]) => {
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debug!("UID SEARCH RECENT returned no results");
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}
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Ok(v) => {
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let command = {
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let mut iter = v.split(u8::is_ascii_whitespace);
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let first = iter.next().unwrap_or(v);
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let mut accum = format!("{}", to_str!(first).trim());
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for ms in iter {
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accum = format!("{},{}", accum, to_str!(ms).trim());
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}
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format!("UID FETCH {} (FLAGS RFC822)", accum)
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};
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try_fail!(
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mailbox_hash,
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self.send_command(command.as_bytes()).await
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self.read_response(&mut response, RequiredResponses::FETCH_REQUIRED).await
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);
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debug!(&response);
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match super::protocol_parser::fetch_responses(&response) {
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Ok((_, v, _)) => {
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for FetchResponse {
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uid, flags, body, ..
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} in v
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{
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if uid.is_none() || flags.is_none() || body.is_none() {
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continue;
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}
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let uid = uid.unwrap();
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if !self
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.uid_store
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.uid_index
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.lock()
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.unwrap()
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.contains_key(&(mailbox_hash, uid))
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{
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if let Ok(mut env) = Envelope::from_bytes(
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body.unwrap(),
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flags.as_ref().map(|&(f, _)| f),
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) {
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self.uid_store
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.hash_index
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.lock()
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.unwrap()
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.insert(env.hash(), (uid, mailbox_hash));
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self.uid_store
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.uid_index
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.lock()
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.unwrap()
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.insert((mailbox_hash, uid), env.hash());
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debug!(
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"Create event {} {} {}",
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env.hash(),
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env.subject(),
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mailbox.path(),
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);
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if let Some((_, keywords)) = flags {
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let mut tag_lck =
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self.uid_store.tag_index.write().unwrap();
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for f in keywords {
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let hash = tag_hash!(f);
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if !tag_lck.contains_key(&hash) {
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tag_lck.insert(hash, f);
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}
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env.labels_mut().push(hash);
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}
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}
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if !env.is_seen() {
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mailbox
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.unseen
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.lock()
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.unwrap()
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.insert_new(env.hash());
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}
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mailbox.exists.lock().unwrap().insert_new(env.hash());
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let mut event: [(UID, RefreshEvent); 1] = [(
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uid,
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RefreshEvent {
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account_hash: self.uid_store.account_hash,
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mailbox_hash,
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kind: Create(Box::new(env)),
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},
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)];
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if self.uid_store.keep_offline_cache {
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cache_handle.update(mailbox_hash, &event)?;
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}
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self.add_refresh_event(std::mem::replace(
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&mut event[0].1,
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RefreshEvent {
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account_hash: self.uid_store.account_hash,
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mailbox_hash,
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kind: Rescan,
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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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Err(e) => {
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debug!(e);
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}
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}
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}
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Err(e) => {
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debug!(
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"UID SEARCH RECENT err: {}\nresp: {}",
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e.to_string(),
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to_str!(&response)
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);
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}
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}
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}
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UntaggedResponse::Fetch(FetchResponse {
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uid,
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message_sequence_number: msg_seq,
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modseq,
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flags,
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body: _,
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envelope: _,
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}) => {
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if let Some(flags) = flags {
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let uid = if let Some(uid) = uid {
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uid
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} else {
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try_fail!(
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mailbox_hash,
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self.send_command(format!("UID SEARCH {}", msg_seq).as_bytes())
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.await,
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self.read_response(&mut response, RequiredResponses::SEARCH)
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.await,
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);
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debug!(to_str!(&response));
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match super::protocol_parser::search_results(
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response.split_rn().next().unwrap_or(b""),
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)
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.map(|(_, v)| v)
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{
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Ok(mut v) if v.len() == 1 => v.pop().unwrap(),
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Ok(_) => {
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return Ok(false);
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}
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Err(e) => {
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debug!("SEARCH error failed: {}", e);
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debug!(to_str!(&response));
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return Ok(false);
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}
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}
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};
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debug!("fetch uid {} {:?}", uid, flags);
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let env_hash = self
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.uid_store
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.uid_index
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.lock()
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.unwrap()
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.get(&(mailbox_hash, uid))
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.copied();
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if let Some(env_hash) = env_hash {
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if !flags.0.intersects(crate::email::Flag::SEEN) {
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mailbox.unseen.lock().unwrap().insert_new(env_hash);
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} else {
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mailbox.unseen.lock().unwrap().remove(env_hash);
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}
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if let Some(modseq) = modseq {
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self.uid_store
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.modseq
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.lock()
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.unwrap()
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.insert(env_hash, modseq);
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}
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let mut event: [(UID, RefreshEvent); 1] = [(
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uid,
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RefreshEvent {
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account_hash: self.uid_store.account_hash,
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mailbox_hash,
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kind: NewFlags(env_hash, flags),
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},
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)];
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if self.uid_store.keep_offline_cache {
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cache_handle.update(mailbox_hash, &event)?;
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}
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self.add_refresh_event(std::mem::replace(
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&mut event[0].1,
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RefreshEvent {
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account_hash: self.uid_store.account_hash,
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mailbox_hash,
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kind: Rescan,
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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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Ok(true)
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}
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}
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