add files that didn't get committed

2 files changed, 94 insertions, 0 deletions

diff --git a/minecraft-protocol/src/mc_buf.rs b/minecraft-protocol/src/mc_buf.rs
new file mode 100644
index 00000000..c67d97db
--- /dev/null
+++ b/minecraft-protocol/src/mc_buf.rs
@@ -0,0 +1,78 @@
+//! Utilities for reading and writing for the Minecraft protocol
+
+use std::io::Cursor;
+
+use byteorder::{BigEndian, ReadBytesExt, WriteBytesExt};
+use tokio::io::AsyncReadExt;
+
+// const MAX_VARINT_SIZE: u32 = 5;
+// const MAX_VARLONG_SIZE: u32 = 10;
+// const DEFAULT_NBT_QUOTA: u32 = 2097152;
+const MAX_STRING_LENGTH: u16 = 32767;
+// const MAX_COMPONENT_STRING_LENGTH: u32 = 262144;
+
+pub async fn read_byte(buf: &mut Cursor<Vec<u8>>) -> Result<u8, String> {
+    match AsyncReadExt::read_u8(buf).await {
+        Ok(r) => Ok(r),
+        Err(_) => Err("Error reading byte".to_string()),
+    }
+}
+
+pub fn write_byte(buf: &mut Vec<u8>, n: u8) {
+    buf.write_u8(n).unwrap();
+}
+
+pub fn write_bytes(buf: &mut Vec<u8>, bytes: &[u8]) {
+    buf.extend_from_slice(bytes);
+}
+
+pub async fn read_varint(buf: &mut Cursor<Vec<u8>>) -> Result<u32, String> {
+    let mut value: u32 = 0;
+    let mut length: u32 = 0;
+    let mut current_byte: u8;
+
+    loop {
+        current_byte = read_byte(buf).await?;
+        value |= ((current_byte & 0x7F) as u32) << (length * 7);
+
+        length += 1;
+        if length > 5 {
+            return Err("VarInt too big".to_string());
+        }
+
+        if (value & 0x80) != 0x80 {
+            return Ok(value);
+        }
+    }
+}
+
+pub fn write_varint(buf: &mut Vec<u8>, mut n: u32) {
+    loop {
+        if (n & 0xFFFFFF80) == 0 {
+            write_byte(buf, n as u8);
+            return ();
+        }
+        write_byte(buf, (n & 0x7F | 0x80) as u8);
+        n >>= 7;
+    }
+}
+
+pub fn write_utf_with_len(buf: &mut Vec<u8>, string: &String, len: usize) {
+    if string.len() > len {
+        panic!(
+            "String too big (was {} bytes encoded, max {})",
+            string.len(),
+            len
+        );
+    }
+    write_varint(buf, string.len() as u32);
+    write_bytes(buf, string.as_bytes());
+}
+
+pub fn write_utf(buf: &mut Vec<u8>, string: &String) {
+    write_utf_with_len(buf, string, MAX_STRING_LENGTH as usize);
+}
+
+pub fn write_short(buf: &mut Vec<u8>, n: u16) {
+    buf.write_u16::<BigEndian>(n).unwrap();
+}
diff --git a/minecraft-protocol/src/packets/serverbound_status_request_packet.rs b/minecraft-protocol/src/packets/serverbound_status_request_packet.rs
new file mode 100644
index 00000000..54e2a614
--- /dev/null
+++ b/minecraft-protocol/src/packets/serverbound_status_request_packet.rs
@@ -0,0 +1,16 @@
+use std::hash::Hash;
+
+use super::Packet;
+
+#[derive(Hash)]
+pub struct ServerboundStatusRequestPacket {}
+
+// implement "Packet" for "ClientIntentionPacket"
+impl Packet for ServerboundStatusRequestPacket {
+    fn get_id(&self) -> u8 {
+        0x00
+    }
+
+    // implement "from_reader" for "ClientIntentionPacket"
+    fn write(&self, _buf: &mut Vec<u8>) {}
+}