azalea

4 files changed, 169 insertions, 0 deletions

diff --git a/azalea-protocol/src/packets/login/clientbound_custom_query_packet.rs b/azalea-protocol/src/packets/login/clientbound_custom_query_packet.rs
new file mode 100644
index 00000000..093176eb
--- /dev/null
+++ b/azalea-protocol/src/packets/login/clientbound_custom_query_packet.rs
@@ -0,0 +1,41 @@
+use std::hash::Hash;
+use tokio::io::BufReader;
+
+use crate::mc_buf::{self, Readable, Writable};
+
+use super::LoginPacket;
+
+#[derive(Hash, Clone, Debug)]
+pub struct ClientboundCustomQueryPacket {
+    pub transaction_id: u32,
+    // TODO: this should be a resource location
+    pub identifier: String,
+    pub data: Vec<u8>,
+}
+
+impl ClientboundCustomQueryPacket {
+    pub fn get(self) -> LoginPacket {
+        LoginPacket::ClientboundCustomQueryPacket(self)
+    }
+
+    pub fn write(&self, buf: &mut Vec<u8>) {
+        buf.write_varint(self.transaction_id as i32).unwrap();
+        buf.write_utf(&self.identifier).unwrap();
+        buf.write_bytes(&self.data).unwrap();
+    }
+
+    pub async fn read<T: tokio::io::AsyncRead + std::marker::Unpin + std::marker::Send>(
+        buf: &mut BufReader<T>,
+    ) -> Result<LoginPacket, String> {
+        let transaction_id = buf.read_varint().await?.0 as u32;
+        // TODO: this should be a resource location
+        let identifier = buf.read_utf().await?;
+        let data = buf.read_bytes(1048576).await?;
+        Ok(ClientboundCustomQueryPacket {
+            transaction_id,
+            identifier,
+            data,
+        }
+        .get())
+    }
+}
diff --git a/azalea-protocol/src/packets/login/clientbound_hello_packet.rs b/azalea-protocol/src/packets/login/clientbound_hello_packet.rs
new file mode 100644
index 00000000..36a48706
--- /dev/null
+++ b/azalea-protocol/src/packets/login/clientbound_hello_packet.rs
@@ -0,0 +1,38 @@
+use std::hash::Hash;
+use tokio::io::BufReader;
+
+use crate::mc_buf::Readable;
+
+use super::LoginPacket;
+
+#[derive(Hash, Clone, Debug)]
+pub struct ClientboundHelloPacket {
+    pub server_id: String,
+    pub public_key: Vec<u8>,
+    pub nonce: Vec<u8>,
+}
+
+impl ClientboundHelloPacket {
+    pub fn get(self) -> LoginPacket {
+        LoginPacket::ClientboundHelloPacket(self)
+    }
+
+    pub fn write(&self, _buf: &mut Vec<u8>) {
+        panic!("ClientboundHelloPacket::write not implemented")
+    }
+
+    pub async fn read<T: tokio::io::AsyncRead + std::marker::Unpin + std::marker::Send>(
+        buf: &mut BufReader<T>,
+    ) -> Result<LoginPacket, String> {
+        let server_id = buf.read_utf_with_len(20).await?;
+        let public_key = buf.read_byte_array().await?;
+        let nonce = buf.read_byte_array().await?;
+
+        Ok(ClientboundHelloPacket {
+            server_id,
+            public_key,
+            nonce,
+        }
+        .get())
+    }
+}
diff --git a/azalea-protocol/src/packets/login/mod.rs b/azalea-protocol/src/packets/login/mod.rs
new file mode 100644
index 00000000..f0ed6717
--- /dev/null
+++ b/azalea-protocol/src/packets/login/mod.rs
@@ -0,0 +1,63 @@
+pub mod clientbound_custom_query_packet;
+pub mod clientbound_hello_packet;
+pub mod serverbound_hello_packet;
+
+use async_trait::async_trait;
+use tokio::io::BufReader;
+
+use crate::connect::PacketFlow;
+
+use super::ProtocolPacket;
+
+#[derive(Clone, Debug)]
+pub enum LoginPacket
+where
+    Self: Sized,
+{
+    ClientboundCustomQueryPacket(clientbound_custom_query_packet::ClientboundCustomQueryPacket),
+    ServerboundHelloPacket(serverbound_hello_packet::ServerboundHelloPacket),
+    ClientboundHelloPacket(clientbound_hello_packet::ClientboundHelloPacket),
+}
+
+#[async_trait]
+impl ProtocolPacket for LoginPacket {
+    fn id(&self) -> u32 {
+        match self {
+            LoginPacket::ClientboundCustomQueryPacket(_packet) => 0x04,
+            LoginPacket::ServerboundHelloPacket(_packet) => 0x00,
+            LoginPacket::ClientboundHelloPacket(_packet) => 0x01,
+        }
+    }
+
+    fn write(&self, buf: &mut Vec<u8>) {
+        match self {
+            LoginPacket::ClientboundCustomQueryPacket(packet) => packet.write(buf),
+            LoginPacket::ServerboundHelloPacket(packet) => packet.write(buf),
+            LoginPacket::ClientboundHelloPacket(packet) => packet.write(buf),
+        }
+    }
+
+    /// Read a packet by its id, ConnectionProtocol, and flow
+    async fn read<T: tokio::io::AsyncRead + std::marker::Unpin + std::marker::Send>(
+        id: u32,
+        flow: &PacketFlow,
+        buf: &mut BufReader<T>,
+    ) -> Result<LoginPacket, String>
+    where
+        Self: Sized,
+    {
+        Ok(match flow {
+            PacketFlow::ServerToClient => match id {
+                0x01 => clientbound_hello_packet::ClientboundHelloPacket::read(buf).await?,
+                0x04 => {
+                    clientbound_custom_query_packet::ClientboundCustomQueryPacket::read(buf).await?
+                }
+                _ => return Err(format!("Unknown ServerToClient status packet id: {}", id)),
+            },
+            PacketFlow::ClientToServer => match id {
+                0x00 => serverbound_hello_packet::ServerboundHelloPacket::read(buf).await?,
+                _ => return Err(format!("Unknown ClientToServer status packet id: {}", id)),
+            },
+        })
+    }
+}
diff --git a/azalea-protocol/src/packets/login/serverbound_hello_packet.rs b/azalea-protocol/src/packets/login/serverbound_hello_packet.rs
new file mode 100644
index 00000000..32a6dadc
--- /dev/null
+++ b/azalea-protocol/src/packets/login/serverbound_hello_packet.rs
@@ -0,0 +1,27 @@
+use std::hash::Hash;
+use tokio::io::BufReader;
+
+use crate::mc_buf::Writable;
+
+use super::LoginPacket;
+
+#[derive(Hash, Clone, Debug)]
+pub struct ServerboundHelloPacket {
+    pub username: String,
+}
+
+impl ServerboundHelloPacket {
+    pub fn get(self) -> LoginPacket {
+        LoginPacket::ServerboundHelloPacket(self)
+    }
+
+    pub fn write(&self, buf: &mut Vec<u8>) {
+        buf.write_utf(&self.username).unwrap();
+    }
+
+    pub async fn read<T: tokio::io::AsyncRead + std::marker::Unpin + std::marker::Send>(
+        _buf: &mut BufReader<T>,
+    ) -> Result<LoginPacket, String> {
+        Err("ServerboundHelloPacket::read not implemented".to_string())
+    }
+}