-
Notifications
You must be signed in to change notification settings - Fork 83
/
list_status.rs
197 lines (183 loc) · 8.02 KB
/
list_status.rs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
//! Adds support for the IMAP LIST-STATUS extension specified in [RFC
//! 5819](https://tools.ietf.org/html/rfc5819).
use crate::client::{validate_str, Session};
use crate::error::{Error, ParseError, Result};
use crate::parse::try_handle_unilateral;
use crate::types::{Mailbox, Name, UnsolicitedResponse};
use imap_proto::types::{MailboxDatum, Response, StatusAttribute};
use ouroboros::self_referencing;
use std::io::{Read, Write};
use std::slice::Iter;
use std::sync::mpsc;
/// A wrapper for one or more [`Name`] responses paired with optional [`Mailbox`] responses.
///
/// This structure represents responses to a LIST-STATUS command, as implemented in
/// [`Session::list_status`]. See [RFC 5819, section 2](https://tools.ietf.org/html/rfc5819.html#section-2).
#[self_referencing]
pub struct ExtendedNames {
data: Vec<u8>,
#[borrows(data)]
#[covariant]
pub(crate) extended_names: Vec<(Name<'this>, Option<Mailbox>)>,
}
impl ExtendedNames {
/// Parse one or more LIST-STATUS responses from a response buffer
pub(crate) fn parse(
owned: Vec<u8>,
unsolicited: &mut mpsc::Sender<UnsolicitedResponse>,
) -> core::result::Result<Self, Error> {
ExtendedNamesTryBuilder {
data: owned,
extended_names_builder: |input| {
let mut lines: &[u8] = input;
let mut names = Vec::new();
let mut current_name: Option<Name<'_>> = None;
let mut current_mailbox: Option<Mailbox> = None;
loop {
if lines.is_empty() {
if let Some(cur_name) = current_name {
names.push((cur_name, current_mailbox));
}
break;
}
match imap_proto::parser::parse_response(lines) {
Ok((
rest,
Response::MailboxData(MailboxDatum::List {
name_attributes,
delimiter,
name,
}),
)) => {
lines = rest;
if let Some(cur_name) = current_name {
names.push((cur_name, current_mailbox));
current_mailbox = None;
}
current_name = Some(Name {
attributes: name_attributes,
delimiter,
name,
});
}
Ok((
rest,
Response::MailboxData(MailboxDatum::Status { mailbox: _, status }),
)) => {
lines = rest;
let mut mb = Mailbox::default();
for attr in status {
match attr {
StatusAttribute::HighestModSeq(v) => {
mb.highest_mod_seq = Some(v)
}
StatusAttribute::Messages(v) => mb.exists = v,
StatusAttribute::Recent(v) => mb.recent = v,
StatusAttribute::UidNext(v) => mb.uid_next = Some(v),
StatusAttribute::UidValidity(v) => mb.uid_validity = Some(v),
StatusAttribute::Unseen(v) => mb.unseen = Some(v),
_ => {} // needed because StatusAttribute is #[non_exhaustive]
}
}
current_mailbox = Some(mb);
}
Ok((rest, resp)) => {
lines = rest;
if let Some(unhandled) = try_handle_unilateral(resp, unsolicited) {
return Err(unhandled.into());
}
}
Err(_) => {
return Err(Error::Parse(ParseError::Invalid(lines.to_vec())));
}
}
}
Ok(names)
},
}
.try_build()
}
/// Iterate over the contained elements
pub fn iter(&self) -> Iter<'_, (Name<'_>, Option<Mailbox>)> {
self.borrow_extended_names().iter()
}
/// Get the number of elements in this container.
pub fn len(&self) -> usize {
self.borrow_extended_names().len()
}
/// Return true of there are no elements in the container.
pub fn is_empty(&self) -> bool {
self.borrow_extended_names().is_empty()
}
/// Get the element at the given index
pub fn get(&self, index: usize) -> Option<&(Name<'_>, Option<Mailbox>)> {
self.borrow_extended_names().get(index)
}
}
impl<T: Read + Write> Session<T> {
/// The [extended `LIST` command](https://tools.ietf.org/html/rfc5819.html#section-2) returns
/// a subset of names from the complete set of all names available to the client. Each name
/// _should_ be paired with a STATUS response, though the server _may_ drop it if it encounters
/// problems looking up the required information.
///
/// This version of the command is also often referred to as `LIST-STATUS` command, as that is
/// the name of the extension and it is a combination of the two.
///
/// The `reference_name` and `mailbox_pattern` arguments have the same semantics as they do in
/// [`Session::list`].
///
/// The `data_items` argument has the same semantics as it does in [`Session::status`].
pub fn list_status(
&mut self,
reference_name: Option<&str>,
mailbox_pattern: Option<&str>,
data_items: &str,
) -> Result<ExtendedNames> {
let reference = validate_str("LIST-STATUS", "reference", reference_name.unwrap_or(""))?;
self.run_command_and_read_response(&format!(
"LIST {} {} RETURN (STATUS {})",
&reference,
mailbox_pattern.unwrap_or("\"\""),
data_items
))
.and_then(|lines| ExtendedNames::parse(lines, &mut self.unsolicited_responses_tx))
}
}
#[cfg(test)]
mod tests {
use imap_proto::NameAttribute;
use super::*;
#[test]
fn parse_list_status_test() {
let lines = b"\
* LIST () \".\" foo\r\n\
* STATUS foo (HIGHESTMODSEQ 122)\r\n\
* LIST () \".\" foo.bar\r\n\
* STATUS foo.bar (HIGHESTMODSEQ 132)\r\n\
* LIST (\\UnMarked) \".\" feeds\r\n\
* LIST () \".\" feeds.test\r\n\
* STATUS feeds.test (HIGHESTMODSEQ 757)\r\n";
let (mut send, recv) = mpsc::channel();
let fetches = ExtendedNames::parse(lines.to_vec(), &mut send).unwrap();
assert!(recv.try_recv().is_err());
assert!(!fetches.is_empty());
assert_eq!(fetches.len(), 4);
let (name, status) = fetches.get(0).unwrap();
assert_eq!(&name.name, "foo");
assert!(status.is_some());
assert_eq!(status.as_ref().unwrap().highest_mod_seq, Some(122));
let (name, status) = fetches.get(1).unwrap();
assert_eq!(&name.name, "foo.bar");
assert!(status.is_some());
assert_eq!(status.as_ref().unwrap().highest_mod_seq, Some(132));
let (name, status) = fetches.get(2).unwrap();
assert_eq!(&name.name, "feeds");
assert_eq!(name.attributes.len(), 1);
assert_eq!(name.attributes.get(0).unwrap(), &NameAttribute::Unmarked);
assert!(status.is_none());
let (name, status) = fetches.get(3).unwrap();
assert_eq!(&name.name, "feeds.test");
assert!(status.is_some());
assert_eq!(status.as_ref().unwrap().highest_mod_seq, Some(757));
}
}