Moved packet stuff to other crate

This commit is contained in:
Kyler 2023-12-24 20:28:00 -07:00
parent b4f039edb6
commit 637f054110
7 changed files with 22 additions and 782 deletions

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@ -8,9 +8,9 @@ license = "MIT"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
purple_cello_mc_protocol = { git = "https://github.com/PurpleCelloServer/purple_cello_mc_protocol.git" }
tokio = { version = "1", features = ["full"] }
serde = { version = "1", features = ["derive"] }
serde_json = "1"
base64 = "0.21.5"
rand = "0.8.5"
async-trait = "0.1.75"

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@ -1,57 +0,0 @@
// Yeahbut December 2023
pub mod serverbound {
use tokio::net::tcp::OwnedReadHalf;
use crate::mc_types::{self, Result, Packet, PacketError};
pub enum HandshakeEnum {
Handshake(Handshake),
}
impl HandshakeEnum {
pub async fn read(stream: &mut OwnedReadHalf) -> Result<Self> {
let mut data = mc_types::read_data(stream).await?;
let packet_id = mc_types::get_var_int(&mut data)?;
if packet_id == Handshake::packet_id() {
return Ok(Self::Handshake(Handshake::get(&mut data)?))
} else {
return Err(Box::new(PacketError::InvalidPacketId))
}
}
}
pub struct Handshake {
pub protocol_version: i32,
pub server_address: String,
pub server_port: u16,
pub next_state: i32,
}
impl Packet for Handshake {
fn packet_id() -> i32 {0}
fn get(data: &mut Vec<u8>) -> Result<Self> {
Ok(Self {
protocol_version: mc_types::get_var_int(data)?,
server_address: mc_types::get_string(data)?,
server_port: mc_types::get_u16(data),
next_state: mc_types::get_var_int(data)?,
})
}
fn convert(&self) -> Vec<u8> {
let mut data: Vec<u8> = vec![];
data.append(&mut mc_types::convert_var_int(Self::packet_id()));
data.append(&mut mc_types::convert_var_int(self.protocol_version));
data.append(&mut mc_types::convert_string(&self.server_address));
data.append(&mut mc_types::convert_u16(self.server_port));
data.append(&mut mc_types::convert_var_int(self.next_state));
data
}
}
}

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@ -1,169 +0,0 @@
// Yeahbut December 2023
pub mod clientbound {
use tokio::net::tcp::OwnedReadHalf;
use crate::mc_types::{self, Result, Packet, PacketArray, PacketError};
pub enum Login {
Disconnect(Disconnect),
EncryptionRequest(EncryptionRequest),
LoginSuccess(LoginSuccess),
}
impl Login {
pub async fn read(stream: &mut OwnedReadHalf) -> Result<Self> {
let mut data = mc_types::read_data(stream).await?;
let packet_id = mc_types::get_var_int(&mut data)?;
if packet_id == Disconnect::packet_id() {
return Ok(Self::Disconnect(Disconnect::get(&mut data)?))
} else if packet_id == EncryptionRequest::packet_id() {
return Ok(Self::EncryptionRequest(
EncryptionRequest::get(&mut data)?))
} else if packet_id == LoginSuccess::packet_id() {
return Ok(Self::LoginSuccess(LoginSuccess::get(&mut data)?))
} else {
return Err(Box::new(PacketError::InvalidPacketId))
}
}
}
pub struct Disconnect {
pub reason: String
}
impl Packet for Disconnect {
fn packet_id() -> i32 {0}
fn get(mut data: &mut Vec<u8>) -> Result<Self> {
Ok(Self {
reason: mc_types::get_string(&mut data)?
})
}
fn convert(&self) -> Vec<u8> {
let mut data: Vec<u8> = vec![];
data.append(&mut mc_types::convert_var_int(Self::packet_id()));
data.append(&mut mc_types::convert_string(&self.reason));
data
}
}
pub struct EncryptionRequest {
pub server_id: String,
pub public_key: Vec<u8>,
pub verify_token: Vec<u8>,
}
impl Packet for EncryptionRequest {
fn packet_id() -> i32 {1}
fn get(mut data: &mut Vec<u8>) -> Result<Self> {
Ok(Self {
server_id: mc_types::get_string(&mut data)?,
public_key: mc_types::get_byte_array(&mut data)?,
verify_token: mc_types::get_byte_array(&mut data)?,
})
}
fn convert(&self) -> Vec<u8> {
let mut data: Vec<u8> = vec![];
data.append(&mut mc_types::convert_var_int(Self::packet_id()));
data.append(&mut mc_types::convert_string(&self.server_id));
data.append(&mut mc_types::convert_byte_array(
&mut self.public_key.clone()));
data.append(&mut mc_types::convert_byte_array(
&mut self.verify_token.clone()));
data
}
}
pub struct LoginSuccess {
pub uuid: u128,
pub username: String,
pub properties: Vec<LoginSuccessProperty>,
}
impl Packet for LoginSuccess {
fn packet_id() -> i32 {2}
fn get(mut data: &mut Vec<u8>) -> Result<Self> {
Ok(Self {
uuid: mc_types::get_uuid(&mut data),
username: mc_types::get_string(&mut data)?,
properties: LoginSuccessProperty::get_array(&mut data)?,
})
}
fn convert(&self) -> Vec<u8> {
let mut data: Vec<u8> = vec![];
data.append(&mut mc_types::convert_var_int(Self::packet_id()));
data.append(&mut mc_types::convert_uuid(self.uuid));
data.append(&mut mc_types::convert_string(&self.username));
data.append(&mut LoginSuccessProperty::convert_array(
&mut self.properties.clone()));
data
}
}
pub struct LoginSuccessProperty {
name: String,
value: String,
signature: Option<String>,
}
impl Clone for LoginSuccessProperty {
fn clone(&self) -> Self {
Self {
name: self.name.clone(),
value: self.value.clone(),
signature: self.signature.clone(),
}
}
}
impl PacketArray for LoginSuccessProperty {
fn get(mut data: &mut Vec<u8>) -> Result<Self> {
let name = mc_types::get_string(&mut data)?;
let value = mc_types::get_string(&mut data)?;
let is_signed = mc_types::get_bool(&mut data);
let mut signature: Option<String> = None;
if is_signed {
signature = Some(mc_types::get_string(&mut data)?);
}
Ok(Self {
name,
value,
signature,
})
}
fn convert(&self) -> Vec<u8> {
let mut data: Vec<u8> = vec![];
data.append(&mut mc_types::convert_string(&self.name));
data.append(&mut mc_types::convert_string(&self.value));
match &self.signature {
Some(value) => {
data.append(&mut &mut mc_types::convert_bool(true));
data.append(&mut mc_types::convert_string(&value));
},
None => data.append(&mut &mut mc_types::convert_bool(false))
}
data
}
}
}

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@ -4,13 +4,14 @@ use tokio::net::{TcpListener, TcpStream, tcp::{OwnedReadHalf, OwnedWriteHalf}};
use tokio::io;
use std::error::Error;
mod mc_types;
mod handshake;
mod status;
mod login;
use purple_cello_mc_protocol::{
mc_types::{self, Packet},
handshake,
login,
};
mod status_handle;
use mc_types::Packet;
#[tokio::main]
async fn main() -> Result<(), Box<dyn Error>> {

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@ -1,347 +0,0 @@
// Yeahbut December 2023
use std::error::Error;
use std::fmt;
use tokio::net::tcp::{OwnedReadHalf, OwnedWriteHalf};
use tokio::io::{AsyncReadExt, AsyncWriteExt};
use serde::{Serialize, Deserialize};
use async_trait::async_trait;
pub type Result<T> = std::result::Result<T, Box<dyn Error>>;
pub const VERSION_NAME: &str = "1.19.4";
pub const VERSION_PROTOCOL: i32 = 762;
const SEGMENT_BITS: u8 = 0x7F;
const CONTINUE_BIT: u8 = 0x80;
#[derive(Debug)]
pub enum PacketError {
ValueTooLarge,
RanOutOfBytes,
InvalidPacketId,
}
impl fmt::Display for PacketError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
PacketError::ValueTooLarge =>
write!(f, "VarInt value is too large"),
PacketError::RanOutOfBytes =>
write!(f, "Ran out of bytes while reading VarInt"),
PacketError::InvalidPacketId =>
write!(f, "Invalid packet id"),
}
}
}
impl Error for PacketError {}
#[derive(Serialize, Deserialize)]
pub struct Chat {
pub text: String,
}
#[async_trait]
pub trait Packet: Sized {
fn packet_id() -> i32;
fn get(data: &mut Vec<u8>) -> Result<Self>;
fn convert(&self) -> Vec<u8>;
async fn read(stream: &mut OwnedReadHalf) -> Result<Self> {
let mut data = read_data(stream).await?;
let packet_id = get_var_int(&mut data)?;
if packet_id == Self::packet_id() {
return Ok(Self::get(&mut data)?)
} else {
return Err(Box::new(PacketError::InvalidPacketId))
}
}
async fn write(&self, stream: &mut OwnedWriteHalf) -> Result<()> {
write_data(stream, &mut self.convert()).await
}
}
pub async fn read_data(stream: &mut OwnedReadHalf) -> Result<Vec<u8>> {
let length = read_var_int_stream(stream).await? as usize;
let mut buffer: Vec<u8> = vec![0; length];
stream.read_exact(&mut buffer).await?;
Ok(buffer)
}
pub async fn write_data(
stream: &mut OwnedWriteHalf,
data: &mut Vec<u8>,
) -> Result<()> {
let mut out_data = convert_var_int(data.len() as i32);
out_data.append(data);
stream.write_all(&out_data).await?;
Ok(())
}
async fn read_var_int_stream(stream: &mut OwnedReadHalf) -> Result<i32> {
let mut data: Vec<u8> = vec![];
loop {
let current_byte = stream.read_u8().await?;
data.append(&mut vec![current_byte]);
if (current_byte & CONTINUE_BIT) == 0 {
break;
}
}
let varint = get_var_int(&mut data)?;
Ok(varint)
}
pub trait PacketArray: Sized {
fn get(data: &mut Vec<u8>) -> Result<Self>;
fn convert(&self) -> Vec<u8>;
fn get_array(data: &mut Vec<u8>) -> Result<Vec<Self>> {
let length = get_var_int(data)?;
let mut out_data: Vec<Self> = vec![];
for _ in 0..length {
out_data.push(Self::get(data)?);
}
Ok(out_data)
}
fn convert_array(array: &mut Vec<Self>) -> Vec<u8> {
let length = array.len() as i32;
let mut data: Vec<u8> = convert_var_int(length);
for element in array {
data.append(&mut Self::convert(element));
}
data
}
}
pub fn get_bool(data: &mut Vec<u8>) -> bool {
data.remove(0) != 0
}
pub fn convert_bool(value: bool) -> Vec<u8> {
vec![value as u8]
}
pub fn get_u8(data: &mut Vec<u8>) -> u8 {
data.remove(0)
}
pub fn convert_u8(value: u8) -> Vec<u8> {
vec![value]
}
pub fn get_i8(data: &mut Vec<u8>) -> i8 {
get_u8(data) as i8
}
pub fn convert_i8(value: i8) -> Vec<u8> {
convert_u8(value as u8)
}
pub fn get_u16(data: &mut Vec<u8>) -> u16 {
((data.remove(0) as u16) << 8) |
(data.remove(0) as u16)
}
pub fn convert_u16(value: u16) -> Vec<u8> {
vec![
((value & 0xFF00) >> 8) as u8,
(value & 0xFF) as u8,
]
}
pub fn get_i16(data: &mut Vec<u8>) -> i16 {
get_u16(data) as i16
}
pub fn convert_i16(value: i16) -> Vec<u8> {
convert_u16(value as u16)
}
pub fn get_u32(data: &mut Vec<u8>) -> u32 {
((data.remove(0) as u32) << 24) |
((data.remove(0) as u32) << 16) |
((data.remove(0) as u32) << 8) |
(data.remove(0) as u32)
}
pub fn convert_u32(value: u32) -> Vec<u8> {
vec![
((value & 0xFF0000) >> 24) as u8,
((value & 0xFF0000) >> 16) as u8,
((value & 0xFF00) >> 8) as u8,
(value & 0xFF) as u8,
]
}
pub fn get_i32(data: &mut Vec<u8>) -> i32 {
get_u32(data) as i32
}
pub fn convert_i32(value: i32) -> Vec<u8> {
convert_u32(value as u32)
}
pub fn get_f32(data: &mut Vec<u8>) -> f32 {
get_u32(data) as f32
}
pub fn convert_f32(value: f32) -> Vec<u8> {
convert_u32(value as u32)
}
pub fn get_u64(data: &mut Vec<u8>) -> u64 {
((data.remove(0) as u64) << 56) |
((data.remove(0) as u64) << 48) |
((data.remove(0) as u64) << 40) |
((data.remove(0) as u64) << 32) |
((data.remove(0) as u64) << 24) |
((data.remove(0) as u64) << 16) |
((data.remove(0) as u64) << 8) |
(data.remove(0) as u64)
}
pub fn convert_u64(value: u64) -> Vec<u8> {
vec![
((value & 0xFF00000000000000) >> 56) as u8,
((value & 0xFF000000000000) >> 48) as u8,
((value & 0xFF0000000000) >> 40) as u8,
((value & 0xFF00000000) >> 32) as u8,
((value & 0xFF000000) >> 24) as u8,
((value & 0xFF0000) >> 16) as u8,
((value & 0xFF00) >> 8) as u8,
(value & 0xFF) as u8,
]
}
pub fn get_i64(data: &mut Vec<u8>) -> i64 {
get_u64(data) as i64
}
pub fn convert_i64(value: i64) -> Vec<u8> {
convert_u64(value as u64)
}
pub fn get_f64(data: &mut Vec<u8>) -> f64 {
get_u64(data) as f64
}
pub fn convert_f64(value: f64) -> Vec<u8> {
convert_u64(value as u64)
}
pub fn get_uuid(data: &mut Vec<u8>) -> u128 {
((data.remove(0) as u128) << 120) |
((data.remove(0) as u128) << 112) |
((data.remove(0) as u128) << 104) |
((data.remove(0) as u128) << 96) |
((data.remove(0) as u128) << 88) |
((data.remove(0) as u128) << 80) |
((data.remove(0) as u128) << 72) |
((data.remove(0) as u128) << 64) |
((data.remove(0) as u128) << 56) |
((data.remove(0) as u128) << 48) |
((data.remove(0) as u128) << 40) |
((data.remove(0) as u128) << 32) |
((data.remove(0) as u128) << 24) |
((data.remove(0) as u128) << 16) |
((data.remove(0) as u128) << 8) |
(data.remove(0) as u128)
}
pub fn convert_uuid(value: u128) -> Vec<u8> {
vec![
((value & 0xFF000000000000000000000000000000) >> 120) as u8,
((value & 0xFF0000000000000000000000000000) >> 112) as u8,
((value & 0xFF00000000000000000000000000) >> 104) as u8,
((value & 0xFF000000000000000000000000) >> 96) as u8,
((value & 0xFF0000000000000000000000) >> 88) as u8,
((value & 0xFF00000000000000000000) >> 80) as u8,
((value & 0xFF000000000000000000) >> 72) as u8,
((value & 0xFF0000000000000000) >> 64) as u8,
((value & 0xFF00000000000000) >> 56) as u8,
((value & 0xFF000000000000) >> 48) as u8,
((value & 0xFF0000000000) >> 40) as u8,
((value & 0xFF00000000) >> 32) as u8,
((value & 0xFF000000) >> 24) as u8,
((value & 0xFF0000) >> 16) as u8,
((value & 0xFF00) >> 8) as u8,
(value & 0xFF) as u8,
]
}
pub fn get_var_int(data: &mut Vec<u8>) -> Result<i32> {
Ok(get_var(data, 32)? as i32)
}
pub fn convert_var_int(value: i32) -> Vec<u8> {
convert_var(value as i64)
}
pub fn get_var_long(data: &mut Vec<u8>) -> Result<i64> {
get_var(data, 64)
}
pub fn convert_var_long(value: i64) -> Vec<u8> {
convert_var(value)
}
fn get_var(data: &mut Vec<u8>, size: u8) -> Result<i64> {
let mut value: i64 = 0;
let mut position: u8 = 0;
loop {
if data.is_empty() {
return Err(Box::new(PacketError::RanOutOfBytes));
}
let current_byte = data.remove(0);
value |= ((current_byte & SEGMENT_BITS) as i64) << position;
if (current_byte & CONTINUE_BIT) == 0 {
break;
}
position += 7;
if position >= size {
return Err(Box::new(PacketError::ValueTooLarge));
}
}
Ok(value)
}
fn convert_var(mut value: i64) -> Vec<u8> {
let mut data: Vec<u8> = vec![];
loop {
if (value & !(SEGMENT_BITS as i64)) == 0 {
data.append(&mut vec![value as u8]);
return data;
}
data.append(
&mut vec![(value & (SEGMENT_BITS as i64)) as u8 | CONTINUE_BIT]);
value >>= 7;
}
}
pub fn get_string(data: &mut Vec<u8>) -> Result<String> {
let length = get_var_int(data)? as usize;
let buffer = data[..length].to_vec();
for _ in 0..length { data.remove(0); }
Ok(String::from_utf8_lossy(&buffer).to_string())
}
pub fn convert_string(s: &str) -> Vec<u8> {
let length = s.len() as i32;
let mut data = convert_var_int(length);
data.append(&mut s.as_bytes().to_vec());
data
}
pub fn get_byte_array(data: &mut Vec<u8>) -> Result<Vec<u8>> {
let length = get_var_int(data)? as usize;
let buffer = data[..length].to_vec();
for _ in 0..length { data.remove(0); }
Ok(buffer)
}
pub fn convert_byte_array(mut s: &mut Vec<u8>) -> Vec<u8> {
let length = s.len() as i32;
let mut data = convert_var_int(length);
data.append(&mut s);
data
}

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@ -1,194 +0,0 @@
// Yeahbut December 2023
pub mod clientbound {
use tokio::net::tcp::OwnedReadHalf;
use serde::{Serialize, Deserialize};
use crate::mc_types::{self, Result, Packet, PacketError};
#[derive(Serialize, Deserialize)]
pub struct StatusVersion {
pub name: String,
pub protocol: i32,
}
#[derive(Serialize, Deserialize)]
pub struct StatusPlayerInfo {
pub name: String,
pub id: String,
}
#[derive(Serialize, Deserialize)]
pub struct StatusPlayers {
pub max: i32,
pub online: i32,
#[serde(skip_serializing_if = "Option::is_none")]
pub sample: Option<Vec<StatusPlayerInfo>>
}
#[derive(Serialize, Deserialize)]
pub struct StatusResponseData {
pub version: StatusVersion,
pub description: mc_types::Chat,
pub players: StatusPlayers,
#[serde(skip_serializing_if = "Option::is_none")]
pub favicon: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
pub enforcesSecureChat: Option<bool>,
#[serde(skip_serializing_if = "Option::is_none")]
pub previewsChat: Option<bool>,
}
pub enum StatusPackets {
Status(Status),
Ping(Ping),
}
impl StatusPackets {
pub async fn read(stream: &mut OwnedReadHalf) -> Result<Self> {
let mut data = mc_types::read_data(stream).await?;
let packet_id = mc_types::get_var_int(&mut data)?;
if packet_id == Status::packet_id() {
return Ok(Self::Status(Status::get(&mut data)?))
} else if packet_id == Ping::packet_id() {
return Ok(Self::Ping(Ping::get(&mut data)?))
} else {
return Err(Box::new(PacketError::InvalidPacketId))
}
}
}
pub struct Status {
pub response: String
}
impl Status {
pub fn from_json(data: StatusResponseData) -> Result<Self> {
Ok(Self {
response: serde_json::to_string(&data)?
})
}
pub fn get_json(&self) -> Result<StatusResponseData> {
Ok(serde_json::from_str(&self.response)?)
}
}
impl Packet for Status {
fn packet_id() -> i32 {0}
fn get(mut data: &mut Vec<u8>) -> Result<Self> {
Ok(Self {
response: mc_types::get_string(&mut data)?
})
}
fn convert(&self) -> Vec<u8> {
let mut data: Vec<u8> = vec![];
data.append(&mut mc_types::convert_var_int(Self::packet_id()));
data.append(&mut mc_types::convert_string(&self.response));
data
}
}
pub struct Ping {
pub payload: i64
}
impl Packet for Ping {
fn packet_id() -> i32 {1}
fn get(mut data: &mut Vec<u8>) -> Result<Self> {
Ok(Self {
payload: mc_types::get_i64(&mut data)
})
}
fn convert(&self) -> Vec<u8> {
let mut data: Vec<u8> = vec![];
data.append(&mut mc_types::convert_var_int(Self::packet_id()));
data.append(&mut mc_types::convert_i64(self.payload));
data
}
}
}
pub mod serverbound {
use tokio::net::tcp::OwnedReadHalf;
use crate::mc_types::{self, Result, Packet, PacketError};
pub enum StatusPackets {
Status(Status),
Ping(Ping),
}
impl StatusPackets {
pub async fn read(stream: &mut OwnedReadHalf) -> Result<Self> {
let mut data = mc_types::read_data(stream).await?;
let packet_id = mc_types::get_var_int(&mut data)?;
if packet_id == Status::packet_id() {
return Ok(Self::Status(Status::get(&mut data)?))
} else if packet_id == Ping::packet_id() {
return Ok(Self::Ping(Ping::get(&mut data)?))
} else {
return Err(Box::new(PacketError::InvalidPacketId))
}
}
}
pub struct Status {}
impl Packet for Status {
fn packet_id() -> i32 {0}
fn get(mut data: &mut Vec<u8>) -> Result<Self> {
Ok(Self {})
}
fn convert(&self) -> Vec<u8> {
let mut data: Vec<u8> = vec![];
data.append(&mut mc_types::convert_var_int(Self::packet_id()));
data
}
}
pub struct Ping {
pub payload: i64
}
impl Packet for Ping {
fn packet_id() -> i32 {1}
fn get(mut data: &mut Vec<u8>) -> Result<Self> {
Ok(Self {
payload: mc_types::get_i64(&mut data)
})
}
fn convert(&self) -> Vec<u8> {
let mut data: Vec<u8> = vec![];
data.append(&mut mc_types::convert_var_int(Self::packet_id()));
data.append(&mut mc_types::convert_i64(self.payload));
data
}
}
}

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@ -9,9 +9,11 @@ use serde_json::Value;
use base64::{Engine as _, engine::general_purpose};
use rand::Rng;
use crate::mc_types::{self, Result, Packet};
use crate::status;
use crate::handshake;
use purple_cello_mc_protocol::{
mc_types::{self, Result, Packet},
handshake,
status,
};
async fn online_players(
server_reader: &mut OwnedReadHalf,
@ -177,13 +179,17 @@ pub async fn get_upstream_status(
server_port: 25565,
next_state: 1,
}.write(server_writer).await?;
mc_types::write_data(server_writer, &mut vec![0]).await?;
let mut data = mc_types::read_data(server_reader).await?;
status::serverbound::Status{}.write(server_writer).await?;
let packet = status::clientbound::Status::read(server_reader).await?;
let status_response = packet.get_json()?;
mc_types::get_u8(&mut data);
let json = mc_types::get_string(&mut data)?;
let status_response: status::clientbound::StatusResponseData =
serde_json::from_str(&json)?;
// mc_types::write_data(server_writer, &mut vec![0]).await?;
// let mut data = mc_types::read_data(server_reader).await?;
// mc_types::get_u8(&mut data);
// let json = mc_types::get_string(&mut data)?;
// let status_response: status::clientbound::StatusResponseData =
// serde_json::from_str(&json)?;
// let mut out_data: Vec<u8> = vec![1];
// out_data.append(&mut mc_types::convert_i64(0));