684 lines
24 KiB
Rust
684 lines
24 KiB
Rust
use imap_proto::{MailboxDatum, Response, ResponseCode};
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use lazy_static::lazy_static;
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use regex::Regex;
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use std::borrow::Cow;
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use std::collections::HashSet;
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use std::sync::mpsc;
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use super::error::{Error, ParseError, Result};
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use super::types::*;
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lazy_static! {
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static ref AUTH_RESP_REGEX: Regex = Regex::new("^\\+ (.*)\r\n").unwrap();
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}
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pub fn parse_authenticate_response(line: &str) -> Result<&str> {
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if let Some(cap) = AUTH_RESP_REGEX.captures_iter(line).next() {
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let data = cap.get(1).map(|x| x.as_str()).unwrap_or("");
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return Ok(data);
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}
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Err(Error::Parse(ParseError::Authentication(
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line.to_string(),
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None,
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)))
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}
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enum MapOrNot<T> {
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Map(T),
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Not(Response<'static>),
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#[allow(dead_code)]
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Ignore,
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}
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unsafe fn parse_many<T, F>(
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lines: Vec<u8>,
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mut map: F,
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unsolicited: &mut mpsc::Sender<UnsolicitedResponse>,
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) -> ZeroCopyResult<Vec<T>>
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where
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F: FnMut(Response<'static>) -> Result<MapOrNot<T>>,
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{
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let f = |mut lines: &'static [u8]| {
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let mut things = Vec::new();
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loop {
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if lines.is_empty() {
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break Ok(things);
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}
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match imap_proto::parser::parse_response(lines) {
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Ok((rest, resp)) => {
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lines = rest;
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match map(resp)? {
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MapOrNot::Map(t) => things.push(t),
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MapOrNot::Not(resp) => match handle_unilateral(resp, unsolicited) {
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Some(Response::Fetch(..)) => continue,
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Some(resp) => break Err(resp.into()),
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None => {}
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},
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MapOrNot::Ignore => continue,
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}
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}
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_ => {
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break Err(Error::Parse(ParseError::Invalid(lines.to_vec())));
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}
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}
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}
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};
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ZeroCopy::make(lines, f)
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}
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pub fn parse_names(
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lines: Vec<u8>,
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unsolicited: &mut mpsc::Sender<UnsolicitedResponse>,
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) -> ZeroCopyResult<Vec<Name>> {
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let f = |resp| match resp {
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// https://github.com/djc/imap-proto/issues/4
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Response::MailboxData(MailboxDatum::List {
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flags,
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delimiter,
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name,
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}) => Ok(MapOrNot::Map(Name {
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attributes: flags.into_iter().map(NameAttribute::from).collect(),
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delimiter: delimiter.map(Cow::Borrowed),
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name: Cow::Borrowed(name),
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})),
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resp => Ok(MapOrNot::Not(resp)),
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};
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unsafe { parse_many(lines, f, unsolicited) }
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}
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pub fn parse_fetches(
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lines: Vec<u8>,
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unsolicited: &mut mpsc::Sender<UnsolicitedResponse>,
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) -> ZeroCopyResult<Vec<Fetch>> {
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let f = |resp| match resp {
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Response::Fetch(num, attrs) => {
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let mut fetch = Fetch {
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message: num,
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flags: vec![],
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uid: None,
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size: None,
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fetch: attrs,
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};
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// set some common fields eaglery
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for attr in &fetch.fetch {
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use imap_proto::AttributeValue;
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match attr {
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AttributeValue::Flags(flags) => {
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fetch
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.flags
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.extend(flags.iter().map(|f| Flag::from(f.to_string())));
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}
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AttributeValue::Uid(uid) => fetch.uid = Some(*uid),
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AttributeValue::Rfc822Size(sz) => fetch.size = Some(*sz),
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_ => {}
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}
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}
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Ok(MapOrNot::Map(fetch))
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}
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resp => Ok(MapOrNot::Not(resp)),
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};
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unsafe { parse_many(lines, f, unsolicited) }
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}
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pub fn parse_expunge(
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lines: Vec<u8>,
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unsolicited: &mut mpsc::Sender<UnsolicitedResponse>,
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) -> Result<Deleted> {
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let mut lines: &[u8] = &lines;
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let mut expunged = Vec::new();
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let mut vanished = Vec::new();
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loop {
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if lines.is_empty() {
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break;
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}
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match imap_proto::parser::parse_response(lines) {
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Ok((rest, Response::Expunge(seq))) => {
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lines = rest;
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expunged.push(seq);
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}
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Ok((rest, Response::Vanished { earlier: _, uids })) => {
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lines = rest;
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vanished.extend(uids);
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}
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Ok((rest, data)) => {
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lines = rest;
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if let Some(resp) = handle_unilateral(data, unsolicited) {
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return Err(resp.into());
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}
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}
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_ => {
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return Err(Error::Parse(ParseError::Invalid(lines.to_vec())));
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}
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}
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}
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// If the server sends a VANISHED response then they must only send VANISHED
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// in lieu of EXPUNGE responses for the rest of this connection, so it is
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// always one or the other.
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// https://tools.ietf.org/html/rfc7162#section-3.2.10
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if !vanished.is_empty() {
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Ok(Deleted::from_vanished(vanished))
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} else {
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Ok(Deleted::from_expunged(expunged))
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}
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}
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pub fn parse_capabilities(
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lines: Vec<u8>,
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unsolicited: &mut mpsc::Sender<UnsolicitedResponse>,
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) -> ZeroCopyResult<Capabilities> {
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let f = |mut lines| {
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let mut caps = HashSet::new();
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loop {
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match imap_proto::parser::parse_response(lines) {
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Ok((rest, Response::Capabilities(c))) => {
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lines = rest;
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caps.extend(c);
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}
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Ok((rest, data)) => {
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lines = rest;
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if let Some(resp) = handle_unilateral(data, unsolicited) {
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break Err(resp.into());
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}
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}
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_ => {
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break Err(Error::Parse(ParseError::Invalid(lines.to_vec())));
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}
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}
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if lines.is_empty() {
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break Ok(Capabilities(caps));
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}
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}
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};
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unsafe { ZeroCopy::make(lines, f) }
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}
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pub fn parse_noop(
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lines: Vec<u8>,
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unsolicited: &mut mpsc::Sender<UnsolicitedResponse>,
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) -> Result<()> {
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let mut lines: &[u8] = &lines;
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loop {
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if lines.is_empty() {
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break Ok(());
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}
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match imap_proto::parser::parse_response(lines) {
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Ok((rest, data)) => {
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lines = rest;
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if let Some(resp) = handle_unilateral(data, unsolicited) {
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break Err(resp.into());
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}
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}
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_ => {
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break Err(Error::Parse(ParseError::Invalid(lines.to_vec())));
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}
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}
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}
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}
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pub fn parse_mailbox(
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mut lines: &[u8],
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unsolicited: &mut mpsc::Sender<UnsolicitedResponse>,
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) -> Result<Mailbox> {
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let mut mailbox = Mailbox::default();
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loop {
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match imap_proto::parser::parse_response(lines) {
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Ok((rest, Response::Done { status, code, .. })) => {
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assert!(rest.is_empty());
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lines = rest;
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// We wouldn't get to parsing if this wasn't an Ok response.
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assert_eq!(status, imap_proto::Status::Ok);
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if let Some(ResponseCode::ReadOnly) = code {
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mailbox.is_read_only = true;
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}
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}
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Ok((rest, Response::Data { status, code, .. })) => {
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lines = rest;
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if let imap_proto::Status::Ok = status {
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} else {
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// how can this happen for a Response::Data?
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unreachable!();
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}
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match code {
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Some(ResponseCode::HighestModSeq(seq)) => {
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mailbox.highest_mod_seq = Some(seq);
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}
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Some(ResponseCode::UidValidity(uid)) => {
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mailbox.uid_validity = Some(uid);
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}
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Some(ResponseCode::UidNext(unext)) => {
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mailbox.uid_next = Some(unext);
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}
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Some(ResponseCode::Unseen(n)) => {
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mailbox.unseen = Some(n);
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}
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Some(ResponseCode::PermanentFlags(flags)) => {
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mailbox
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.permanent_flags
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.extend(flags.into_iter().map(String::from).map(Flag::from));
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}
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_ => {}
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}
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}
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Ok((rest, Response::MailboxData(m))) => {
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lines = rest;
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match m {
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MailboxDatum::Status { mailbox, status } => {
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unsolicited
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.send(UnsolicitedResponse::Status {
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mailbox: mailbox.into(),
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attributes: status,
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})
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.unwrap();
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}
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MailboxDatum::Exists(e) => {
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mailbox.exists = e;
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}
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MailboxDatum::Recent(r) => {
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mailbox.recent = r;
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}
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MailboxDatum::Flags(flags) => {
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mailbox
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.flags
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.extend(flags.into_iter().map(String::from).map(Flag::from));
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}
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MailboxDatum::List { .. }
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| MailboxDatum::MetadataSolicited { .. }
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| MailboxDatum::MetadataUnsolicited { .. }
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| MailboxDatum::Search { .. } => {}
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}
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}
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Ok((rest, Response::Expunge(n))) => {
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lines = rest;
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unsolicited.send(UnsolicitedResponse::Expunge(n)).unwrap();
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}
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Ok((_, resp)) => {
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break Err(resp.into());
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}
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_ => {
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break Err(Error::Parse(ParseError::Invalid(lines.to_vec())));
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}
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}
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if lines.is_empty() {
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break Ok(mailbox);
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}
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}
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}
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pub fn parse_ids(
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lines: &[u8],
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unsolicited: &mut mpsc::Sender<UnsolicitedResponse>,
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) -> Result<HashSet<u32>> {
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let mut lines = &lines[..];
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let mut ids = HashSet::new();
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loop {
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if lines.is_empty() {
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break Ok(ids);
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}
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match imap_proto::parser::parse_response(lines) {
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Ok((rest, Response::MailboxData(MailboxDatum::Search(c)))) => {
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lines = rest;
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ids.extend(c);
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}
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Ok((rest, data)) => {
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lines = rest;
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if let Some(resp) = handle_unilateral(data, unsolicited) {
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break Err(resp.into());
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}
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}
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_ => {
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break Err(Error::Parse(ParseError::Invalid(lines.to_vec())));
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}
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}
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}
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}
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// check if this is simply a unilateral server response
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// (see Section 7 of RFC 3501):
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pub(crate) fn handle_unilateral<'a>(
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res: Response<'a>,
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unsolicited: &mut mpsc::Sender<UnsolicitedResponse>,
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) -> Option<Response<'a>> {
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match res {
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Response::MailboxData(MailboxDatum::Status { mailbox, status }) => {
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unsolicited
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.send(UnsolicitedResponse::Status {
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mailbox: mailbox.into(),
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attributes: status,
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})
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.unwrap();
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}
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Response::MailboxData(MailboxDatum::Recent(n)) => {
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unsolicited.send(UnsolicitedResponse::Recent(n)).unwrap();
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}
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Response::MailboxData(MailboxDatum::Flags(flags)) => {
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unsolicited
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.send(UnsolicitedResponse::Flags(
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flags
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.into_iter()
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.map(|s| Flag::from(s.to_string()))
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.collect(),
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))
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.unwrap();
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}
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Response::MailboxData(MailboxDatum::Exists(n)) => {
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unsolicited.send(UnsolicitedResponse::Exists(n)).unwrap();
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}
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Response::Expunge(n) => {
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unsolicited.send(UnsolicitedResponse::Expunge(n)).unwrap();
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}
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Response::MailboxData(MailboxDatum::MetadataUnsolicited { mailbox, values }) => {
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unsolicited
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.send(UnsolicitedResponse::Metadata {
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mailbox: mailbox.to_string(),
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metadata_entries: values.iter().map(|s| s.to_string()).collect(),
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})
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.unwrap();
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}
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Response::Vanished { earlier, uids } => {
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unsolicited
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.send(UnsolicitedResponse::Vanished { earlier, uids })
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.unwrap();
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}
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res => {
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return Some(res);
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}
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}
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None
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use imap_proto::types::*;
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use std::borrow::Cow;
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#[test]
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fn parse_capability_test() {
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let expected_capabilities = vec![
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Capability::Imap4rev1,
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Capability::Atom(Cow::Borrowed("STARTTLS")),
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Capability::Auth(Cow::Borrowed("GSSAPI")),
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Capability::Atom(Cow::Borrowed("LOGINDISABLED")),
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];
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let lines = b"* CAPABILITY IMAP4rev1 STARTTLS AUTH=GSSAPI LOGINDISABLED\r\n";
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let (mut send, recv) = mpsc::channel();
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let capabilities = parse_capabilities(lines.to_vec(), &mut send).unwrap();
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// shouldn't be any unexpected responses parsed
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assert!(recv.try_recv().is_err());
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assert_eq!(capabilities.len(), 4);
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for e in expected_capabilities {
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assert!(capabilities.has(&e));
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}
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}
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#[test]
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fn parse_capability_case_insensitive_test() {
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// Test that "IMAP4REV1" (instead of "IMAP4rev1") is accepted
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let expected_capabilities = vec![
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Capability::Imap4rev1,
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Capability::Atom(Cow::Borrowed("STARTTLS")),
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];
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let lines = b"* CAPABILITY IMAP4REV1 STARTTLS\r\n";
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let (mut send, recv) = mpsc::channel();
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let capabilities = parse_capabilities(lines.to_vec(), &mut send).unwrap();
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// shouldn't be any unexpected responses parsed
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assert!(recv.try_recv().is_err());
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assert_eq!(capabilities.len(), 2);
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for e in expected_capabilities {
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assert!(capabilities.has(&e));
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}
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}
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#[test]
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#[should_panic]
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fn parse_capability_invalid_test() {
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let (mut send, recv) = mpsc::channel();
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let lines = b"* JUNK IMAP4rev1 STARTTLS AUTH=GSSAPI LOGINDISABLED\r\n";
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parse_capabilities(lines.to_vec(), &mut send).unwrap();
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assert!(recv.try_recv().is_err());
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}
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#[test]
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fn parse_names_test() {
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let lines = b"* LIST (\\HasNoChildren) \".\" \"INBOX\"\r\n";
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let (mut send, recv) = mpsc::channel();
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let names = parse_names(lines.to_vec(), &mut send).unwrap();
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assert!(recv.try_recv().is_err());
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assert_eq!(names.len(), 1);
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assert_eq!(
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names[0].attributes(),
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&[NameAttribute::from("\\HasNoChildren")]
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);
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assert_eq!(names[0].delimiter(), Some("."));
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assert_eq!(names[0].name(), "INBOX");
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}
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#[test]
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fn parse_fetches_empty() {
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let lines = b"";
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let (mut send, recv) = mpsc::channel();
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let fetches = parse_fetches(lines.to_vec(), &mut send).unwrap();
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assert!(recv.try_recv().is_err());
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assert!(fetches.is_empty());
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}
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#[test]
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fn parse_fetches_test() {
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let lines = b"\
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* 24 FETCH (FLAGS (\\Seen) UID 4827943)\r\n\
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* 25 FETCH (FLAGS (\\Seen))\r\n";
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let (mut send, recv) = mpsc::channel();
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let fetches = parse_fetches(lines.to_vec(), &mut send).unwrap();
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assert!(recv.try_recv().is_err());
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assert_eq!(fetches.len(), 2);
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assert_eq!(fetches[0].message, 24);
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assert_eq!(fetches[0].flags(), &[Flag::Seen]);
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assert_eq!(fetches[0].uid, Some(4827943));
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assert_eq!(fetches[0].body(), None);
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assert_eq!(fetches[0].header(), None);
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assert_eq!(fetches[1].message, 25);
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assert_eq!(fetches[1].flags(), &[Flag::Seen]);
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assert_eq!(fetches[1].uid, None);
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assert_eq!(fetches[1].body(), None);
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assert_eq!(fetches[1].header(), None);
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}
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#[test]
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fn parse_fetches_w_unilateral() {
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// https://github.com/mattnenterprise/rust-imap/issues/81
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let lines = b"\
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* 37 FETCH (UID 74)\r\n\
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* 1 RECENT\r\n";
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let (mut send, recv) = mpsc::channel();
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let fetches = parse_fetches(lines.to_vec(), &mut send).unwrap();
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assert_eq!(recv.try_recv(), Ok(UnsolicitedResponse::Recent(1)));
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assert_eq!(fetches.len(), 1);
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assert_eq!(fetches[0].message, 37);
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assert_eq!(fetches[0].uid, Some(74));
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}
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#[test]
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fn parse_names_w_unilateral() {
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let lines = b"\
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* LIST (\\HasNoChildren) \".\" \"INBOX\"\r\n\
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* 4 EXPUNGE\r\n";
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|
let (mut send, recv) = mpsc::channel();
|
|
let names = parse_names(lines.to_vec(), &mut send).unwrap();
|
|
|
|
assert_eq!(recv.try_recv().unwrap(), UnsolicitedResponse::Expunge(4));
|
|
|
|
assert_eq!(names.len(), 1);
|
|
assert_eq!(
|
|
names[0].attributes(),
|
|
&[NameAttribute::from("\\HasNoChildren")]
|
|
);
|
|
assert_eq!(names[0].delimiter(), Some("."));
|
|
assert_eq!(names[0].name(), "INBOX");
|
|
}
|
|
|
|
#[test]
|
|
fn parse_capabilities_w_unilateral() {
|
|
let expected_capabilities = vec![
|
|
Capability::Imap4rev1,
|
|
Capability::Atom(Cow::Borrowed("STARTTLS")),
|
|
Capability::Auth(Cow::Borrowed("GSSAPI")),
|
|
Capability::Atom(Cow::Borrowed("LOGINDISABLED")),
|
|
];
|
|
let lines = b"\
|
|
* CAPABILITY IMAP4rev1 STARTTLS AUTH=GSSAPI LOGINDISABLED\r\n\
|
|
* STATUS dev.github (MESSAGES 10 UIDNEXT 11 UIDVALIDITY 1408806928 UNSEEN 0)\r\n\
|
|
* 4 EXISTS\r\n";
|
|
let (mut send, recv) = mpsc::channel();
|
|
let capabilities = parse_capabilities(lines.to_vec(), &mut send).unwrap();
|
|
|
|
assert_eq!(capabilities.len(), 4);
|
|
for e in expected_capabilities {
|
|
assert!(capabilities.has(&e));
|
|
}
|
|
|
|
assert_eq!(
|
|
recv.try_recv().unwrap(),
|
|
UnsolicitedResponse::Status {
|
|
mailbox: "dev.github".to_string(),
|
|
attributes: vec![
|
|
StatusAttribute::Messages(10),
|
|
StatusAttribute::UidNext(11),
|
|
StatusAttribute::UidValidity(1408806928),
|
|
StatusAttribute::Unseen(0)
|
|
]
|
|
}
|
|
);
|
|
assert_eq!(recv.try_recv().unwrap(), UnsolicitedResponse::Exists(4));
|
|
}
|
|
|
|
#[test]
|
|
fn parse_ids_w_unilateral() {
|
|
let lines = b"\
|
|
* SEARCH 23 42 4711\r\n\
|
|
* 1 RECENT\r\n\
|
|
* STATUS INBOX (MESSAGES 10 UIDNEXT 11 UIDVALIDITY 1408806928 UNSEEN 0)\r\n";
|
|
let (mut send, recv) = mpsc::channel();
|
|
let ids = parse_ids(lines, &mut send).unwrap();
|
|
|
|
assert_eq!(ids, [23, 42, 4711].iter().cloned().collect());
|
|
|
|
assert_eq!(recv.try_recv().unwrap(), UnsolicitedResponse::Recent(1));
|
|
assert_eq!(
|
|
recv.try_recv().unwrap(),
|
|
UnsolicitedResponse::Status {
|
|
mailbox: "INBOX".to_string(),
|
|
attributes: vec![
|
|
StatusAttribute::Messages(10),
|
|
StatusAttribute::UidNext(11),
|
|
StatusAttribute::UidValidity(1408806928),
|
|
StatusAttribute::Unseen(0)
|
|
]
|
|
}
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn parse_ids_test() {
|
|
let lines = b"* SEARCH 1600 1698 1739 1781 1795 1885 1891 1892 1893 1898 1899 1901 1911 1926 1932 1933 1993 1994 2007 2032 2033 2041 2053 2062 2063 2065 2066 2072 2078 2079 2082 2084 2095 2100 2101 2102 2103 2104 2107 2116 2120 2135 2138 2154 2163 2168 2172 2189 2193 2198 2199 2205 2212 2213 2221 2227 2267 2275 2276 2295 2300 2328 2330 2332 2333 2334\r\n\
|
|
* SEARCH 2335 2336 2337 2338 2339 2341 2342 2347 2349 2350 2358 2359 2362 2369 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2390 2392 2397 2400 2401 2403 2405 2409 2411 2414 2417 2419 2420 2424 2426 2428 2439 2454 2456 2467 2468 2469 2490 2515 2519 2520 2521\r\n";
|
|
let (mut send, recv) = mpsc::channel();
|
|
let ids = parse_ids(lines, &mut send).unwrap();
|
|
assert!(recv.try_recv().is_err());
|
|
let ids: HashSet<u32> = ids.iter().cloned().collect();
|
|
assert_eq!(
|
|
ids,
|
|
[
|
|
1600, 1698, 1739, 1781, 1795, 1885, 1891, 1892, 1893, 1898, 1899, 1901, 1911, 1926,
|
|
1932, 1933, 1993, 1994, 2007, 2032, 2033, 2041, 2053, 2062, 2063, 2065, 2066, 2072,
|
|
2078, 2079, 2082, 2084, 2095, 2100, 2101, 2102, 2103, 2104, 2107, 2116, 2120, 2135,
|
|
2138, 2154, 2163, 2168, 2172, 2189, 2193, 2198, 2199, 2205, 2212, 2213, 2221, 2227,
|
|
2267, 2275, 2276, 2295, 2300, 2328, 2330, 2332, 2333, 2334, 2335, 2336, 2337, 2338,
|
|
2339, 2341, 2342, 2347, 2349, 2350, 2358, 2359, 2362, 2369, 2371, 2372, 2373, 2374,
|
|
2375, 2376, 2377, 2378, 2379, 2380, 2381, 2382, 2383, 2384, 2385, 2386, 2390, 2392,
|
|
2397, 2400, 2401, 2403, 2405, 2409, 2411, 2414, 2417, 2419, 2420, 2424, 2426, 2428,
|
|
2439, 2454, 2456, 2467, 2468, 2469, 2490, 2515, 2519, 2520, 2521
|
|
]
|
|
.iter()
|
|
.cloned()
|
|
.collect()
|
|
);
|
|
|
|
let lines = b"* SEARCH\r\n";
|
|
let (mut send, recv) = mpsc::channel();
|
|
let ids = parse_ids(lines, &mut send).unwrap();
|
|
assert!(recv.try_recv().is_err());
|
|
let ids: HashSet<u32> = ids.iter().cloned().collect();
|
|
assert_eq!(ids, HashSet::<u32>::new());
|
|
}
|
|
|
|
#[test]
|
|
fn parse_vanished_test() {
|
|
// VANISHED can appear if the user has enabled QRESYNC (RFC 7162), in response to
|
|
// SELECT/EXAMINE (QRESYNC); UID FETCH (VANISHED); or EXPUNGE commands. In the first
|
|
// two cases the VANISHED response will be a different type than expected
|
|
// and so goes into the unsolicited responses channel.
|
|
let lines = b"* VANISHED 3\r\n";
|
|
let (mut send, recv) = mpsc::channel();
|
|
let resp = parse_expunge(lines.to_vec(), &mut send).unwrap();
|
|
|
|
// Should be not empty, and have no seqs
|
|
assert!(!resp.is_empty());
|
|
assert_eq!(None, resp.seqs().next());
|
|
|
|
// Should have one UID response
|
|
let mut uids = resp.uids();
|
|
assert_eq!(Some(3), uids.next());
|
|
assert_eq!(None, uids.next());
|
|
|
|
// Should be nothing in the unsolicited responses channel
|
|
assert!(recv.try_recv().is_err());
|
|
|
|
// Test VANISHED mixed with FETCH
|
|
let lines = b"* VANISHED (EARLIER) 3:8,12,50:60\r\n\
|
|
* 49 FETCH (UID 117 FLAGS (\\Seen \\Answered) MODSEQ (90060115194045001))\r\n";
|
|
|
|
let fetches = parse_fetches(lines.to_vec(), &mut send).unwrap();
|
|
match recv.try_recv().unwrap() {
|
|
UnsolicitedResponse::Vanished { earlier, uids } => {
|
|
assert!(earlier);
|
|
assert_eq!(uids.len(), 3);
|
|
assert_eq!(*uids[0].start(), 3);
|
|
assert_eq!(*uids[0].end(), 8);
|
|
assert_eq!(*uids[1].start(), 12);
|
|
assert_eq!(*uids[1].end(), 12);
|
|
assert_eq!(*uids[2].start(), 50);
|
|
assert_eq!(*uids[2].end(), 60);
|
|
}
|
|
what => panic!("Unexpected response in unsolicited responses: {:?}", what),
|
|
}
|
|
assert!(recv.try_recv().is_err());
|
|
assert_eq!(fetches.len(), 1);
|
|
assert_eq!(fetches[0].message, 49);
|
|
assert_eq!(fetches[0].flags(), &[Flag::Seen, Flag::Answered]);
|
|
assert_eq!(fetches[0].uid, Some(117));
|
|
assert_eq!(fetches[0].body(), None);
|
|
assert_eq!(fetches[0].header(), None);
|
|
}
|
|
}
|