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use std::str;
use std::sync::Arc;
use peanuts::element::{FromElement, IntoElement};
use peanuts::{Reader, Writer};
use rsasl::prelude::SASLConfig;
use tokio::io::{AsyncRead, AsyncWrite, AsyncWriteExt, BufReader, ReadHalf, WriteHalf};
use tokio_native_tls::native_tls::TlsConnector;
use tracing::{debug, info, instrument, trace};
use trust_dns_resolver::proto::rr::domain::IntoLabel;
use crate::connection::{Tls, Unencrypted};
use crate::error::Error;
use crate::stanza::starttls::{Proceed, StartTls};
use crate::stanza::stream::{Features, Stream};
use crate::stanza::XML_VERSION;
use crate::Result;
use crate::JID;
pub struct Jabber<S>
where
S: AsyncRead + AsyncWrite + Unpin,
{
reader: Reader<ReadHalf<S>>,
writer: Writer<WriteHalf<S>>,
jid: Option<JID>,
auth: Option<Arc<SASLConfig>>,
server: String,
}
impl<S> Jabber<S>
where
S: AsyncRead + AsyncWrite + Unpin,
{
pub fn new(
reader: ReadHalf<S>,
writer: WriteHalf<S>,
jid: Option<JID>,
auth: Option<Arc<SASLConfig>>,
server: String,
) -> Self {
let reader = Reader::new(reader);
let writer = Writer::new(writer);
Self {
reader,
writer,
jid,
auth,
server,
}
}
}
impl<S> Jabber<S>
where
S: AsyncRead + AsyncWrite + Unpin + Send,
Jabber<S>: std::fmt::Debug,
{
// pub async fn negotiate(self) -> Result<Jabber<S>> {}
#[instrument]
pub async fn start_stream(&mut self) -> Result<()> {
// client to server
// declaration
self.writer.write_declaration(XML_VERSION).await?;
// opening stream element
let server = self.server.clone().try_into()?;
let stream = Stream::new_client(None, server, None, "en".to_string());
self.writer.write_start(&stream).await?;
// server to client
// may or may not send a declaration
let decl = self.reader.read_prolog().await?;
// receive stream element and validate
let stream: Stream = self.reader.read_start().await?;
debug!("got stream: {:?}", stream);
if let Some(from) = stream.from {
self.server = from.to_string()
}
Ok(())
}
pub async fn get_features(&mut self) -> Result<Features> {
debug!("getting features");
let features: Features = self.reader.read().await?;
debug!("got features: {:?}", features);
Ok(features)
}
pub fn into_inner(self) -> S {
self.reader.into_inner().unsplit(self.writer.into_inner())
}
}
impl Jabber<Unencrypted> {
pub async fn starttls(mut self) -> Result<Jabber<Tls>> {
self.writer
.write_full(&StartTls { required: false })
.await?;
let proceed: Proceed = self.reader.read().await?;
debug!("got proceed: {:?}", proceed);
let connector = TlsConnector::new().unwrap();
let stream = self.reader.into_inner().unsplit(self.writer.into_inner());
if let Ok(tlsstream) = tokio_native_tls::TlsConnector::from(connector)
.connect(&self.server, stream)
.await
{
let (read, write) = tokio::io::split(tlsstream);
let client = Jabber::new(
read,
write,
self.jid.to_owned(),
self.auth.to_owned(),
self.server.to_owned(),
);
return Ok(client);
} else {
return Err(Error::Connection);
}
}
}
impl std::fmt::Debug for Jabber<Tls> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.debug_struct("Jabber")
.field("connection", &"tls")
.field("jid", &self.jid)
.field("auth", &self.auth)
.field("server", &self.server)
.finish()
}
}
impl std::fmt::Debug for Jabber<Unencrypted> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.debug_struct("Jabber")
.field("connection", &"unencrypted")
.field("jid", &self.jid)
.field("auth", &self.auth)
.field("server", &self.server)
.finish()
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::connection::Connection;
use test_log::test;
#[test(tokio::test)]
async fn start_stream() {
let connection = Connection::connect("blos.sm").await.unwrap();
match connection {
Connection::Encrypted(mut c) => c.start_stream().await.unwrap(),
Connection::Unencrypted(mut c) => c.start_stream().await.unwrap(),
}
}
}
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