From 5e9f8ac95e5fa1c4732b0e85f9f08753c3d3cf7f Mon Sep 17 00:00:00 2001
From: Lizzy Fleckenstein <eliasfleckenstein@web.de>
Date: Thu, 16 Feb 2023 23:08:17 +0100
Subject: Initial commit

---
 src/main.rs | 124 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 src/main.rs

(limited to 'src/main.rs')

diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..5b8817e
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,124 @@
+use mt_net::{MtReceiver, MtSender, RemoteSrv, ToCltPkt, ToSrvPkt};
+use rand::RngCore;
+use sha2::Sha256;
+use srp::{client::SrpClient, groups::G_2048};
+use std::time::Duration;
+use tokio::sync::oneshot;
+
+async fn handle(tx: MtSender<RemoteSrv>, rx: &mut MtReceiver<RemoteSrv>) {
+    let mut username = "hydra".to_string();
+    let password = "password";
+
+    let (init_tx, mut init_rx) = oneshot::channel();
+
+    {
+        let tx = tx.clone();
+        let pkt = ToSrvPkt::Init {
+            serialize_version: 29,
+            min_proto_version: 40,
+            max_proto_version: 40,
+            player_name: username.clone(),
+            send_full_item_meta: false,
+        };
+
+        tokio::spawn(async move {
+            let mut interval = tokio::time::interval(Duration::from_millis(100));
+            while tokio::select! {
+                _ = &mut init_rx => false,
+                _ = interval.tick() => true,
+            } {
+                tx.send(&pkt).await.unwrap()
+            }
+        });
+    }
+
+    let mut init_tx = Some(init_tx);
+    let mut auth = None;
+
+    while let Some(res) = rx.recv().await {
+        match res {
+            Ok(pkt) => {
+                use ToCltPkt::*;
+
+                match pkt {
+                    Hello {
+                        auth_methods,
+                        username: name,
+                        ..
+                    } => {
+                        use mt_net::AuthMethod;
+
+                        if let Some(chan) = init_tx.take() {
+                            chan.send(()).unwrap();
+
+                            let client = SrpClient::<Sha256>::new(&G_2048);
+
+                            let mut rand_bytes = vec![0; 32];
+                            rand::thread_rng().fill_bytes(&mut rand_bytes);
+
+                            username = name;
+
+                            if auth_methods.contains(AuthMethod::FirstSrp) {
+                                let verifier = client.compute_verifier(
+                                    username.to_lowercase().as_bytes(),
+                                    password.as_bytes(),
+                                    &rand_bytes,
+                                );
+
+                                tx.send(&ToSrvPkt::FirstSrp {
+                                    salt: rand_bytes,
+                                    verifier,
+                                    empty_passwd: password.is_empty(),
+                                })
+                                .await
+                                .unwrap();
+                            } else if auth_methods.contains(AuthMethod::Srp) {
+                                let a = client.compute_public_ephemeral(&rand_bytes);
+                                auth = Some((rand_bytes, client));
+
+                                tx.send(&ToSrvPkt::SrpBytesA { a, no_sha1: true })
+                                    .await
+                                    .unwrap();
+                            } else {
+                                panic!("unsupported auth methods: {auth_methods:?}");
+                            }
+                        }
+                    }
+                    SrpBytesSaltB { salt, b } => {
+                        if let Some((a, client)) = auth.take() {
+                            let m = client
+                                .process_reply(
+                                    &a,
+                                    username.to_lowercase().as_bytes(),
+                                    password.as_bytes(),
+                                    &salt,
+                                    &b,
+                                )
+                                .unwrap()
+                                .proof()
+                                .into();
+
+                            tx.send(&ToSrvPkt::SrpBytesM { m }).await.unwrap();
+                        }
+                    }
+                    x => println!("{x:?}"),
+                }
+            }
+            Err(err) => eprintln!("{err}"),
+        }
+    }
+}
+
+#[tokio::main]
+async fn main() {
+    let (tx, mut rx) = mt_net::connect("localhost:30000").await.unwrap();
+
+    tokio::select! {
+        _ = tokio::signal::ctrl_c() => println!("canceled"),
+        _ = handle(tx, &mut rx) => {
+            println!("disconnected");
+        }
+    }
+
+    rx.close().await;
+}
-- 
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