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/*
* SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
*
* SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
*/
use super::{authenticate::Mechanism, ImapResponse};
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct Response {
pub capabilities: Vec<Capability>,
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum Capability {
IMAP4rev2,
IMAP4rev1,
StartTLS,
LoginDisabled,
Idle,
Namespace,
Id,
Children,
MultiAppend,
Binary,
Unselect,
ACL,
UIDPlus,
ESearch,
SASLIR, //SASL-IR
Within,
Enable,
SearchRes,
Sort,
Thread, //THREAD=REFERENCES
ListExtended, //LIST-EXTENDED
ESort,
SortDisplay, //SORT=DISPLAY
SpecialUse, //SPECIAL-USE
CreateSpecialUse, //CREATE-SPECIAL-USEE
Move,
CondStore,
QResync,
LiteralPlus, //LITERAL+
UnAuthenticate,
StatusSize, //STATUS=SIZE
ObjectId,
Preview,
Utf8Accept,
Auth(Mechanism),
}
impl Capability {
pub fn serialize(&self, buf: &mut Vec<u8>) {
buf.extend_from_slice(match self {
Capability::Auth(mechanism) => {
buf.extend_from_slice(b"AUTH=");
mechanism.serialize(buf);
return;
}
Capability::IMAP4rev2 => b"IMAP4rev2",
Capability::IMAP4rev1 => b"IMAP4rev1",
Capability::StartTLS => b"STARTTLS",
Capability::LoginDisabled => b"LOGINDISABLED",
Capability::CondStore => b"CONDSTORE",
Capability::QResync => b"QRESYNC",
Capability::LiteralPlus => b"LITERAL+",
Capability::UnAuthenticate => b"UNAUTHENTICATE",
Capability::StatusSize => b"STATUS=SIZE",
Capability::ObjectId => b"OBJECTID",
Capability::Preview => b"PREVIEW",
Capability::Idle => b"IDLE",
Capability::Namespace => b"NAMESPACE",
Capability::Id => b"ID",
Capability::Children => b"CHILDREN",
Capability::MultiAppend => b"MULTIAPPEND",
Capability::Binary => b"BINARY",
Capability::Unselect => b"UNSELECT",
Capability::ACL => b"ACL",
Capability::UIDPlus => b"UIDPLUS",
Capability::ESearch => b"ESEARCH",
Capability::SASLIR => b"SASL-IR",
Capability::Within => b"WITHIN",
Capability::Enable => b"ENABLE",
Capability::SearchRes => b"SEARCHRES",
Capability::Sort => b"SORT",
Capability::Thread => b"THREAD=REFERENCES",
Capability::ListExtended => b"LIST-EXTENDED",
Capability::ESort => b"ESORT",
Capability::SortDisplay => b"SORT=DISPLAY",
Capability::SpecialUse => b"SPECIAL-USE",
Capability::CreateSpecialUse => b"CREATE-SPECIAL-USE",
Capability::Move => b"MOVE",
Capability::Utf8Accept => b"UTF8=ACCEPT",
});
}
pub fn all_capabilities(is_authenticated: bool, offer_tls: bool) -> Vec<Capability> {
let mut capabilities = vec![
Capability::IMAP4rev2,
Capability::IMAP4rev1,
Capability::Enable,
Capability::SASLIR,
Capability::LiteralPlus,
Capability::Id,
Capability::Utf8Accept,
];
if is_authenticated {
capabilities.extend([
Capability::Idle,
Capability::Namespace,
Capability::Children,
Capability::MultiAppend,
Capability::Binary,
Capability::Unselect,
Capability::ACL,
Capability::UIDPlus,
Capability::ESearch,
Capability::Within,
Capability::SearchRes,
Capability::Sort,
Capability::Thread,
Capability::ListExtended,
Capability::ESort,
Capability::SortDisplay,
Capability::SpecialUse,
Capability::CreateSpecialUse,
Capability::Move,
Capability::CondStore,
Capability::QResync,
Capability::UnAuthenticate,
Capability::StatusSize,
Capability::ObjectId,
Capability::Preview,
]);
} else {
capabilities.extend([
Capability::Auth(Mechanism::OAuthBearer),
Capability::Auth(Mechanism::Plain),
]);
}
if offer_tls {
capabilities.push(Capability::StartTLS);
}
capabilities
}
}
impl ImapResponse for Response {
fn serialize(self) -> Vec<u8> {
let mut buf = Vec::with_capacity(64);
buf.extend_from_slice(b"* CAPABILITY");
for capability in self.capabilities.iter() {
buf.push(b' ');
capability.serialize(&mut buf);
}
buf.extend_from_slice(b"\r\n");
buf
}
}
#[cfg(test)]
mod tests {
use crate::protocol::{
capability::{Capability, Response},
ImapResponse,
};
#[test]
fn serialize_capability() {
assert_eq!(
&Response {
capabilities: vec![
Capability::IMAP4rev2,
Capability::StartTLS,
Capability::LoginDisabled
],
}
.serialize(),
concat!("* CAPABILITY IMAP4rev2 STARTTLS LOGINDISABLED\r\n",).as_bytes()
);
}
}
|
