fix WHO replies

src/projections/irc/mod.rs

@@ -27,6 +27,11 @@ pub struct ServerConfig {
 #[derive(Debug)]
 struct RegisteredUser {
     nickname: Vec<u8>,
+    /**
+     * Username is mostly unused in modern IRC.
+     * 
+     * [https://stackoverflow.com/questions/31666247/what-is-the-difference-between-the-nick-username-and-real-name-in-irc-and-wha]
+     */
     username: Vec<u8>,
     realname: Vec<u8>,
 }
@@ -383,19 +388,22 @@ async fn handle_incoming_message(
             }
             ClientMessage::Who { target } => match &target {
                 Recipient::Nick(nick) => {
-                    if nick == &user.nickname {
+                    // TODO handle non-existing user
-                        let mut username = Vec::with_capacity(user.username.len() + 1);
+                    let mut username = Vec::with_capacity(nick.len() + 1);
                     username.push(b'~');
-                        username.extend_from_slice(user.username.as_slice());
+                    username.extend_from_slice(nick.as_slice());
+                    let mut host = b"user/".to_vec();
+                    host.extend_from_slice(nick.as_slice());
                     ServerMessage {
                         tags: vec![],
                         sender: Some(config.server_name.as_bytes().to_vec()),
                         body: ServerMessageBody::N352WhoReply {
                             client: user.nickname.clone(),
                             username,
-                                host: b"*".to_vec(), // TODO need to decide what to send as user's host
+                            host,
                             server: config.server_name.as_bytes().to_vec(),
                             flags: AwayStatus::Here,
+                            nickname: nick.clone(),
                             hops: 0,
                             realname: user.realname.clone(),
                         },
@@ -415,8 +423,6 @@ async fn handle_incoming_message(
                     .await?;
                     writer.flush().await?;
                 }
-                    log::warn!("WHO for other users is not implemented")
-                }
                 Recipient::Chan(_) => {
                     log::warn!("WHO for chans not implemented")
                 }

src/protos/irc/server.rs

@@ -104,6 +104,7 @@ pub enum ServerMessageBody {
         host: ByteVec,
         /// Hostname of the server the user is connected to
         server: ByteVec,
+        nickname: ByteVec,
         /// Flags
         flags: AwayStatus,
         hops: u8,
@@ -224,6 +225,7 @@ impl ServerMessageBody {
                 host,
                 server,
                 flags,
+                nickname,
                 hops,
                 realname,
             } => {
@@ -240,6 +242,8 @@ impl ServerMessageBody {
                     AwayStatus::Here => writer.write_all(b"H").await?,
                     AwayStatus::Gone => writer.write_all(b"G").await?,
                 }
+                writer.write_all(b" ").await?;
+                writer.write_all(&nickname).await?;
                 writer.write_all(b" :").await?;
                 writer.write_all(hops.to_string().as_bytes()).await?;
                 writer.write_all(b" ").await?;