azalea

1 files changed, 0 insertions, 203 deletions

diff --git a/minecraft-protocol/src/mc_buf.rs b/minecraft-protocol/src/mc_buf.rs
deleted file mode 100644
index 54ba1f7d..00000000
--- a/minecraft-protocol/src/mc_buf.rs
+++ /dev/null
@@ -1,203 +0,0 @@
-//! Utilities for reading and writing for the Minecraft protocol
-
-use std::io::Write;
-
-use async_trait::async_trait;
-use byteorder::{BigEndian, WriteBytesExt};
-use tokio::io::{AsyncRead, AsyncReadExt};
-
-// const DEFAULT_NBT_QUOTA: u32 = 2097152;
-const MAX_STRING_LENGTH: u16 = 32767;
-// const MAX_COMPONENT_STRING_LENGTH: u32 = 262144;
-
-#[async_trait]
-pub trait Writable {
-    fn write_byte(&mut self, n: u8) -> Result<(), std::io::Error>;
-    fn write_bytes(&mut self, bytes: &[u8]) -> Result<(), std::io::Error>;
-    fn write_varint(&mut self, value: i32) -> Result<(), std::io::Error>;
-    fn write_utf_with_len(&mut self, string: &str, len: usize) -> Result<(), std::io::Error>;
-    fn write_utf(&mut self, string: &str) -> Result<(), std::io::Error>;
-    fn write_short(&mut self, n: u16) -> Result<(), std::io::Error>;
-    fn write_byte_array(&mut self, bytes: &[u8]) -> Result<(), std::io::Error>;
-}
-
-#[async_trait]
-impl Writable for Vec<u8> {
-    fn write_byte(&mut self, n: u8) -> Result<(), std::io::Error> {
-        WriteBytesExt::write_u8(self, n)
-    }
-
-    fn write_bytes(&mut self, bytes: &[u8]) -> Result<(), std::io::Error> {
-        Ok(self.extend_from_slice(bytes))
-    }
-
-    fn write_varint(&mut self, mut value: i32) -> Result<(), std::io::Error> {
-        let mut buffer = [0];
-        if value == 0 {
-            self.write_all(&buffer).unwrap();
-        }
-        while value != 0 {
-            buffer[0] = (value & 0b0111_1111) as u8;
-            value = (value >> 7) & (i32::max_value() >> 6);
-            if value != 0 {
-                buffer[0] |= 0b1000_0000;
-            }
-            self.write_all(&buffer)?;
-        }
-        Ok(())
-    }
-
-    fn write_utf_with_len(&mut self, string: &str, len: usize) -> Result<(), std::io::Error> {
-        if string.len() > len {
-            panic!(
-                "String too big (was {} bytes encoded, max {})",
-                string.len(),
-                len
-            );
-        }
-        self.write_varint(string.len() as i32);
-        self.write_bytes(string.as_bytes())
-    }
-
-    fn write_utf(&mut self, string: &str) -> Result<(), std::io::Error> {
-        self.write_utf_with_len(string, MAX_STRING_LENGTH.into())
-    }
-
-    fn write_short(&mut self, n: u16) -> Result<(), std::io::Error> {
-        WriteBytesExt::write_u16::<BigEndian>(self, n)
-    }
-
-    fn write_byte_array(&mut self, bytes: &[u8]) -> Result<(), std::io::Error> {
-        self.write_varint(bytes.len() as i32);
-        self.write_bytes(bytes)
-    }
-}
-
-#[async_trait]
-pub trait Readable {
-    async fn read_varint(&mut self) -> Result<(i32, u8), String>;
-    async fn read_byte_array(&mut self) -> Result<Vec<u8>, String>;
-    async fn read_bytes(&mut self, n: usize) -> Result<Vec<u8>, String>;
-    async fn read_utf(&mut self) -> Result<String, String>;
-    async fn read_utf_with_len(&mut self, max_length: u32) -> Result<String, String>;
-    async fn read_byte(&mut self) -> Result<u8, String>;
-}
-
-#[async_trait]
-impl<R> Readable for R
-where
-    R: AsyncRead + std::marker::Unpin + std::marker::Send,
-{
-    // fast varints stolen from https://github.com/luojia65/mc-varint/blob/master/src/lib.rs#L67
-    /// Read a single varint from the reader and return the value, along with the number of bytes read
-    async fn read_varint(&mut self) -> Result<(i32, u8), String> {
-        let mut buffer = [0];
-        let mut ans = 0;
-        for i in 0..4 {
-            self.read_exact(&mut buffer)
-                .await
-                .map_err(|_| "Invalid VarInt".to_string())?;
-            ans |= ((buffer[0] & 0b0111_1111) as i32) << (7 * i);
-            if buffer[0] & 0b1000_0000 == 0 {
-                return Ok((ans, i + 1));
-            }
-        }
-        Ok((ans, 5))
-    }
-
-    async fn read_byte_array(&mut self) -> Result<Vec<u8>, String> {
-        let length = self.read_varint().await?.0 as usize;
-        Ok(self.read_bytes(length).await?)
-    }
-
-    async fn read_bytes(&mut self, n: usize) -> Result<Vec<u8>, String> {
-        let mut bytes = vec![0; n];
-        match AsyncReadExt::read_exact(self, &mut bytes).await {
-            Ok(_) => Ok(bytes),
-            Err(_) => Err("Error reading bytes".to_string()),
-        }
-    }
-
-    async fn read_utf(&mut self) -> Result<String, String> {
-        self.read_utf_with_len(MAX_STRING_LENGTH.into()).await
-    }
-
-    async fn read_utf_with_len(&mut self, max_length: u32) -> Result<String, String> {
-        let (length, _length_varint_length) = self.read_varint().await?;
-        // i don't know why it's multiplied by 4 but it's like that in mojang's code so
-        if length < 0 {
-            return Err(
-                "The received encoded string buffer length is less than zero! Weird string!"
-                    .to_string(),
-            );
-        }
-        if length as u32 > max_length * 4 {
-            return Err(format!(
-                "The received encoded string buffer length is longer than maximum allowed ({} > {})",
-                length,
-                max_length * 4
-            ));
-        }
-
-        // this is probably quite inefficient, idk how to do it better
-        let mut string = String::new();
-        let mut buffer = vec![0; length as usize];
-        self.read_exact(&mut buffer)
-            .await
-            .map_err(|_| "Invalid UTF-8".to_string())?;
-
-        string.push_str(std::str::from_utf8(&buffer).unwrap());
-        if string.len() > length as usize {
-            return Err(format!(
-                "The received string length is longer than maximum allowed ({} > {})",
-                length, max_length
-            ));
-        }
-
-        Ok(string)
-    }
-
-    /// Read a single byte from the reader
-    async fn read_byte(&mut self) -> Result<u8, String> {
-        match AsyncReadExt::read_u8(self).await {
-            Ok(r) => Ok(r),
-            Err(_) => Err("Error reading byte".to_string()),
-        }
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use std::io::Cursor;
-    use tokio::io::BufReader;
-
-    #[test]
-    fn test_write_varint() {
-        let mut buf = Vec::new();
-        buf.write_varint(123456);
-        assert_eq!(buf, vec![192, 196, 7]);
-
-        let mut buf = Vec::new();
-        buf.write_varint(0);
-        assert_eq!(buf, vec![0]);
-    }
-
-    #[tokio::test]
-    async fn test_read_varint() {
-        let mut buf = BufReader::new(Cursor::new(vec![192, 196, 7]));
-        assert_eq!(buf.read_varint().await.unwrap(), (123456, 3));
-
-        let mut buf = BufReader::new(Cursor::new(vec![0]));
-        assert_eq!(buf.read_varint().await.unwrap(), (0, 1));
-
-        let mut buf = BufReader::new(Cursor::new(vec![1]));
-        assert_eq!(buf.read_varint().await.unwrap(), (1, 1));
-    }
-
-    #[tokio::test]
-    async fn test_read_varint_longer() {
-        let mut buf = BufReader::new(Cursor::new(vec![138, 56, 0, 135, 56, 123]));
-        assert_eq!(buf.read_varint().await.unwrap(), (7178, 2));
-    }
-}