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/*
* meli - jmap module.
*
* Copyright 2019 Manos Pitsidianakis
*
* This file is part of meli.
*
* meli is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* meli is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with meli. If not, see <http://www.gnu.org/licenses/>.
*/
use crate::async_workers::{Async, AsyncBuilder, AsyncStatus, WorkContext};
use crate::backends::*;
use crate::conf::AccountSettings;
use crate::email::*;
use crate::error::{MeliError, Result};
use reqwest::blocking::Client;
use std::collections::{BTreeMap, HashMap};
use std::str::FromStr;
use std::sync::{Arc, Mutex, RwLock};
use std::time::Instant;
#[macro_export]
macro_rules! _impl {
($(#[$outer:meta])*$field:ident : $t:ty) => {
$(#[$outer])*
pub fn $field(mut self, new_val: $t) -> Self {
self.$field = new_val;
self
}
};
(get_mut $(#[$outer:meta])*$method:ident, $field:ident : $t:ty) => {
$(#[$outer])*
pub fn $method(&mut self) -> &mut $t {
&mut self.$field
}
};
(get $(#[$outer:meta])*$method:ident, $field:ident : $t:ty) => {
$(#[$outer])*
pub fn $method(&self) -> &$t {
&self.$field
}
}
}
pub mod operations;
use operations::*;
pub mod connection;
use connection::*;
pub mod protocol;
use protocol::*;
pub mod rfc8620;
use rfc8620::*;
pub mod objects;
use objects::*;
pub mod mailbox;
use mailbox::*;
#[derive(Debug, Default)]
pub struct EnvelopeCache {
bytes: Option<String>,
headers: Option<String>,
body: Option<String>,
flags: Option<Flag>,
}
#[derive(Debug, Clone)]
pub struct JmapServerConf {
pub server_hostname: String,
pub server_username: String,
pub server_password: String,
pub server_port: u16,
pub danger_accept_invalid_certs: bool,
}
macro_rules! get_conf_val {
($s:ident[$var:literal]) => {
$s.extra.get($var).ok_or_else(|| {
MeliError::new(format!(
"Configuration error ({}): JMAP connection requires the field `{}` set",
$s.name.as_str(),
$var
))
})
};
($s:ident[$var:literal], $default:expr) => {
$s.extra
.get($var)
.map(|v| {
<_>::from_str(v).map_err(|e| {
MeliError::new(format!(
"Configuration error ({}): Invalid value for field `{}`: {}\n{}",
$s.name.as_str(),
$var,
v,
e
))
})
})
.unwrap_or_else(|| Ok($default))
};
}
impl JmapServerConf {
pub fn new(s: &AccountSettings) -> Result<Self> {
Ok(JmapServerConf {
server_hostname: get_conf_val!(s["server_hostname"])?.to_string(),
server_username: get_conf_val!(s["server_username"])?.to_string(),
server_password: get_conf_val!(s["server_password"])?.to_string(),
server_port: get_conf_val!(s["server_port"], 443)?,
danger_accept_invalid_certs: get_conf_val!(s["danger_accept_invalid_certs"], false)?,
})
}
}
struct IsSubscribedFn(Box<dyn Fn(&str) -> bool + Send + Sync>);
impl std::fmt::Debug for IsSubscribedFn {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
write!(f, "IsSubscribedFn Box")
}
}
impl std::ops::Deref for IsSubscribedFn {
type Target = Box<dyn Fn(&str) -> bool + Send + Sync>;
fn deref(&self) -> &Box<dyn Fn(&str) -> bool + Send + Sync> {
&self.0
}
}
macro_rules! get_conf_val {
($s:ident[$var:literal]) => {
$s.extra.get($var).ok_or_else(|| {
MeliError::new(format!(
"Configuration error ({}): JMAP connection requires the field `{}` set",
$s.name.as_str(),
$var
))
})
};
($s:ident[$var:literal], $default:expr) => {
$s.extra
.get($var)
.map(|v| {
<_>::from_str(v).map_err(|e| {
MeliError::new(format!(
"Configuration error ({}): Invalid value for field `{}`: {}\n{}",
$s.name.as_str(),
$var,
v,
e
))
})
})
.unwrap_or_else(|| Ok($default))
};
}
#[derive(Debug, Default)]
pub struct Store {
byte_cache: HashMap<EnvelopeHash, EnvelopeCache>,
id_store: HashMap<EnvelopeHash, Id>,
blob_id_store: HashMap<EnvelopeHash, Id>,
}
#[derive(Debug)]
pub struct JmapType {
account_name: String,
online: Arc<Mutex<(Instant, Result<()>)>>,
is_subscribed: Arc<IsSubscribedFn>,
server_conf: JmapServerConf,
connection: Arc<JmapConnection>,
store: Arc<RwLock<Store>>,
tag_index: Arc<RwLock<BTreeMap<u64, String>>>,
mailboxes: Arc<RwLock<HashMap<MailboxHash, JmapMailbox>>>,
}
impl MailBackend for JmapType {
fn is_online(&self) -> Result<()> {
self.online.lock().unwrap().1.clone()
}
fn connect(&mut self) {
if self.is_online().is_err()
&& Instant::now().duration_since(self.online.lock().unwrap().0)
>= std::time::Duration::new(2, 0)
{
let _ = self.mailboxes();
}
}
fn get(&mut self, mailbox: &Mailbox) -> Async<Result<Vec<Envelope>>> {
let mut w = AsyncBuilder::new();
let mailboxes = self.mailboxes.clone();
let store = self.store.clone();
let tag_index = self.tag_index.clone();
let connection = self.connection.clone();
let mailbox_hash = mailbox.hash();
let handle = {
let tx = w.tx();
let closure = move |_work_context| {
tx.send(AsyncStatus::Payload(protocol::get(
&connection,
&store,
&tag_index,
&mailboxes.read().unwrap()[&mailbox_hash],
)))
.unwrap();
tx.send(AsyncStatus::Finished).unwrap();
};
Box::new(closure)
};
w.build(handle)
}
fn watch(
&self,
_sender: RefreshEventConsumer,
_work_context: WorkContext,
) -> Result<std::thread::ThreadId> {
Err(MeliError::from("JMAP watch for updates is unimplemented"))
}
fn mailboxes(&self) -> Result<HashMap<MailboxHash, Mailbox>> {
if self.mailboxes.read().unwrap().is_empty() {
let mailboxes = debug!(protocol::get_mailboxes(&self.connection))?;
*self.mailboxes.write().unwrap() = mailboxes;
}
Ok(self
.mailboxes
.read()
.unwrap()
.iter()
.filter(|(_, f)| f.is_subscribed)
.map(|(&h, f)| (h, BackendMailbox::clone(f) as Mailbox))
.collect())
}
fn operation(&self, hash: EnvelopeHash) -> Result<Box<dyn BackendOp>> {
Ok(Box::new(JmapOp::new(
hash,
self.connection.clone(),
self.store.clone(),
)))
}
fn save(
&self,
_bytes: Vec<u8>,
_mailbox_hash: MailboxHash,
_flags: Option<Flag>,
) -> ResultFuture<()> {
Err(MeliError::new("Unimplemented."))
}
fn as_any(&self) -> &dyn ::std::any::Any {
self
}
fn tags(&self) -> Option<Arc<RwLock<BTreeMap<u64, String>>>> {
Some(self.tag_index.clone())
}
}
impl JmapType {
pub fn new(
s: &AccountSettings,
is_subscribed: Box<dyn Fn(&str) -> bool + Send + Sync>,
) -> Result<Box<dyn MailBackend>> {
let online = Arc::new(Mutex::new((
std::time::Instant::now(),
Err(MeliError::new("Account is uninitialised.")),
)));
let server_conf = JmapServerConf::new(s)?;
Ok(Box::new(JmapType {
connection: Arc::new(JmapConnection::new(&server_conf, online.clone())?),
store: Arc::new(RwLock::new(Store::default())),
tag_index: Arc::new(RwLock::new(Default::default())),
mailboxes: Arc::new(RwLock::new(HashMap::default())),
account_name: s.name.clone(),
online,
is_subscribed: Arc::new(IsSubscribedFn(is_subscribed)),
server_conf,
}))
}
pub fn validate_config(s: &AccountSettings) -> Result<()> {
get_conf_val!(s["server_hostname"])?;
get_conf_val!(s["server_username"])?;
get_conf_val!(s["server_password"])?;
get_conf_val!(s["server_port"], 443)?;
get_conf_val!(s["danger_accept_invalid_certs"], false)?;
Ok(())
}
}