feat(xmpp): implement session iq

src/projections/xmpp/mod.rs

@@ -25,6 +25,7 @@ use crate::prelude::*;
 use crate::protos::xmpp;
 use crate::protos::xmpp::bind::{BindResponse, Jid, Name, Server};
 use crate::protos::xmpp::client::Iq;
+use crate::protos::xmpp::session::Session;
 use crate::protos::xmpp::stream::*;
 use crate::util::xml::{Continuation, FromXml, Parser, ToXml};
 use crate::util::Terminator;
@@ -301,6 +302,21 @@ async fn socket_final(
                             }
                             xml_writer.get_mut().flush().await?;
                         }
+                        proto::IqClientBody::Session(_) => {
+                            let mut events = vec![];
+                            let req = Iq {
+                                from: None,
+                                id: iq.id,
+                                to: None,
+                                r#type: xmpp::client::IqType::Result,
+                                body: Session,
+                            };
+                            req.serialize(&mut events);
+                            for i in events {
+                                xml_writer.write_event_async(i).await?;
+                            }
+                            xml_writer.get_mut().flush().await?;
+                        }
                     },
                     proto::ClientPacket::Message(_) => todo!(),
                 }

src/projections/xmpp/proto.rs

@@ -4,13 +4,15 @@ use quick_xml::name::{Namespace, ResolveResult};
 
 use crate::protos::xmpp::bind::BindRequest;
 use crate::protos::xmpp::client::{Iq, Message};
-use crate::util::xml::{Continuation, FromXml, Parser};
+use crate::protos::xmpp::session::Session;
+use crate::util::xml::{Continuation, FromXml, FromXmlTag, Parser};
 
 use crate::prelude::*;
 
 #[derive(PartialEq, Eq, Debug, From)]
 pub enum IqClientBody {
     Bind(BindRequest),
+    Session(Session),
 }
 
 #[derive(From)]
@@ -20,6 +22,7 @@ pub struct IqClientBodyParser(IqClientBodyParserInner);
 enum IqClientBodyParserInner {
     Initial,
     Bind(<BindRequest as FromXml>::P),
+    SessionV(<Session as FromXml>::P),
 }
 
 impl FromXml for IqClientBody {
@@ -41,25 +44,34 @@ impl Parser for IqClientBodyParser {
         use IqClientBodyParserInner::*;
         match self.0 {
             Initial => {
-                let Event::Start(bytes) = event else {
-                    return Continuation::Final(Err(ffail!("Unexpected XML event: {event:?}. Expected start of {}", BindRequest::NAME)));
+                let bytes = match event {
+                    Event::Start(bytes) => bytes,
+                    Event::Empty(bytes) => bytes,
+                    _ => {
+                        return Continuation::Final(Err(ffail!("Unexpected XML event: {event:?}")))
+                    }
                 };
                 if bytes.name().0 == BindRequest::NAME.as_bytes()
                     && namespace == ResolveResult::Bound(Namespace(BindRequest::NS.as_bytes()))
                 {
-                    match BindRequest::parse().consume(namespace, event) {
+                    IqClientBodyParser(BindRequest::parse().into()).consume(namespace, event)
+                } else if bytes.name().0 == Session::NAME.as_bytes()
+                    && namespace == ResolveResult::Bound(Namespace(Session::NS.as_bytes()))
+                {
+                    IqClientBodyParser(Session::parse().into()).consume(namespace, event)
+                } else {
+                    Continuation::Final(Err(ffail!("Unexpected XML event: {event:?}")))
+                }
+            }
+            Bind(p) => match p.consume(namespace, event) {
                 Continuation::Final(Ok(r)) => Continuation::Final(Ok(r.into())),
                 Continuation::Final(Err(e)) => Continuation::Final(Err(e)),
                 Continuation::Continue(s) => {
                     let inner: IqClientBodyParserInner = s.into();
                     Continuation::Continue(inner.into())
                 }
-                    }
-                } else {
-                    Continuation::Final(Err(ffail!("Unexpected XML event: {event:?}")))
-                }
-            }
-            Bind(p) => match p.consume(namespace, event) {
+            },
+            SessionV(p) => match p.consume(namespace, event) {
                 Continuation::Final(Ok(r)) => Continuation::Final(Ok(r.into())),
                 Continuation::Final(Err(e)) => Continuation::Final(Err(e)),
                 Continuation::Continue(s) => {

src/protos/xmpp/bind.rs

@@ -3,7 +3,7 @@ use quick_xml::events::{BytesEnd, BytesStart, BytesText, Event};
 use quick_xml::name::{Namespace, ResolveResult};
 
 use crate::prelude::*;
-use crate::util::xml::{Continuation, FromXml, Parser, ToXml};
+use crate::util::xml::*;
 
 pub const XMLNS: &'static str = "urn:ietf:params:xml:ns:xmpp-bind";
 
@@ -55,9 +55,9 @@ enum BindRequestParserInner {
     InBindResourceEnd(String),
 }
 
-impl BindRequest {
-    pub const NS: &'static str = XMLNS;
-    pub const NAME: &'static str = "bind";
+impl FromXmlTag for BindRequest {
+    const NS: &'static str = XMLNS;
+    const NAME: &'static str = "bind";
 }
 
 impl FromXml for BindRequest {

src/protos/xmpp/client.rs

@@ -21,9 +21,9 @@ pub struct Message {
     pub body: String,
 }
 
-impl Message {
-    pub const NS: &'static str = XMLNS;
-    pub const NAME: &'static str = "message";
+impl FromXmlTag for Message {
+    const NS: &'static str = XMLNS;
+    const NAME: &'static str = "message";
 }
 
 impl FromXml for Message {
@@ -180,9 +180,9 @@ pub struct Iq<T> {
     pub body: T,
 }
 
-impl<T> Iq<T> {
-    pub const NS: &'static str = XMLNS;
-    pub const NAME: &'static str = "iq";
+impl<T: FromXml> FromXmlTag for Iq<T> {
+    const NAME: &'static str = "iq";
+    const NS: &'static str = XMLNS;
 }
 
 impl<T: FromXml> FromXml for Iq<T> {

src/protos/xmpp/mod.rs

@@ -1,6 +1,7 @@
 pub mod bind;
 pub mod client;
 pub mod sasl;
+pub mod session;
 pub mod stanzaerror;
 pub mod stream;
 pub mod tls;

src/protos/xmpp/session.rs

@@ -0,0 +1,62 @@
+use quick_xml::events::{BytesStart, Event};
+
+use crate::prelude::*;
+use crate::util::xml::*;
+
+pub const XMLNS: &'static str = "urn:ietf:params:xml:ns:xmpp-session";
+
+#[derive(PartialEq, Eq, Debug)]
+pub struct Session;
+
+pub struct SessionParser(SessionParserInner);
+
+enum SessionParserInner {
+    Initial,
+    InSession,
+}
+
+impl Parser for SessionParser {
+    type Output = Result<Session>;
+
+    fn consume<'a>(
+        self: Self,
+        namespace: quick_xml::name::ResolveResult,
+        event: &quick_xml::events::Event<'a>,
+    ) -> Continuation<Self, Self::Output> {
+        match self.0 {
+            SessionParserInner::Initial => match event {
+                Event::Start(_) => {
+                    Continuation::Continue(SessionParser(SessionParserInner::InSession))
+                }
+                Event::Empty(_) => Continuation::Final(Ok(Session)),
+                _ => Continuation::Final(Err(ffail!("Unexpected XML event: {event:?}"))),
+            },
+            SessionParserInner::InSession => match event {
+                Event::End(_) => Continuation::Final(Ok(Session)),
+                _ => Continuation::Final(Err(ffail!("Unexpected XML event: {event:?}"))),
+            },
+        }
+    }
+}
+
+impl FromXml for Session {
+    type P = SessionParser;
+
+    fn parse() -> Self::P {
+        SessionParser(SessionParserInner::Initial)
+    }
+}
+
+impl FromXmlTag for Session {
+    const NAME: &'static str = "session";
+    const NS: &'static str = XMLNS;
+}
+
+impl ToXml for Session {
+    fn serialize(&self, events: &mut Vec<Event<'static>>) {
+        events.push(Event::Empty(BytesStart::new(format!(
+            r#"session xmlns="{}""#,
+            XMLNS
+        ))));
+    }
+}

src/util/xml.rs

@@ -13,6 +13,11 @@ pub trait ToXml: Sized {
     fn serialize(&self, events: &mut Vec<Event<'static>>);
 }
 
+pub trait FromXmlTag: FromXml {
+    const NAME: &'static str;
+    const NS: &'static str;
+}
+
 pub trait Parser: Sized {
     type Output;