1523 lines
44 KiB
Rust
1523 lines
44 KiB
Rust
// Copyright 2016 Matthew Collins
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#![allow(dead_code)]
|
|
#![allow(non_camel_case_types)]
|
|
|
|
use aes::Aes128;
|
|
use cfb8::cipher::{AsyncStreamCipher, NewCipher};
|
|
use cfb8::Cfb8;
|
|
use std_or_web::fs;
|
|
|
|
pub mod forge;
|
|
pub mod mojang;
|
|
|
|
use crate::format;
|
|
use crate::nbt;
|
|
use crate::shared::Position;
|
|
use byteorder::{BigEndian, ReadBytesExt, WriteBytesExt};
|
|
use flate2::read::{ZlibDecoder, ZlibEncoder};
|
|
use flate2::Compression;
|
|
use instant::{Duration, Instant};
|
|
use log::{debug, warn};
|
|
use std::convert;
|
|
use std::default;
|
|
use std::fmt;
|
|
use std::io;
|
|
use std::io::{Read, Write};
|
|
use std::net::TcpStream;
|
|
use std::sync::atomic::{AtomicBool, AtomicI32, Ordering};
|
|
|
|
pub const SUPPORTED_PROTOCOLS: [i32; 25] = [
|
|
756, 754, 753, 751, 736, 735, 578, 575, 498, 490, 485, 480, 477, 452, 451, 404, 340, 316, 315,
|
|
210, 109, 107, 74, 47, 5,
|
|
];
|
|
|
|
static CURRENT_PROTOCOL_VERSION: AtomicI32 = AtomicI32::new(SUPPORTED_PROTOCOLS[0]);
|
|
static NETWORK_DEBUG: AtomicBool = AtomicBool::new(false);
|
|
|
|
pub fn current_protocol_version() -> i32 {
|
|
CURRENT_PROTOCOL_VERSION.load(Ordering::Relaxed)
|
|
}
|
|
|
|
pub fn enable_network_debug() {
|
|
NETWORK_DEBUG.store(true, Ordering::Relaxed);
|
|
}
|
|
|
|
pub fn is_network_debug() -> bool {
|
|
NETWORK_DEBUG.load(Ordering::Relaxed)
|
|
}
|
|
|
|
/// Helper macro for defining packets
|
|
#[macro_export]
|
|
macro_rules! state_packets {
|
|
($($state:ident $stateName:ident {
|
|
$($dir:ident $dirName:ident {
|
|
$(
|
|
$(#[$attr:meta])*
|
|
packet $name:ident {
|
|
$($(#[$fattr:meta])*field $field:ident: $field_type:ty = $(when ($cond:expr))*, )+
|
|
}
|
|
)*
|
|
})+
|
|
})+) => {
|
|
use crate::protocol::*;
|
|
use std::io;
|
|
|
|
#[derive(Debug)]
|
|
pub enum Packet {
|
|
$(
|
|
$(
|
|
$(
|
|
$name($state::$dir::$name),
|
|
)*
|
|
)+
|
|
)+
|
|
}
|
|
|
|
$(
|
|
pub mod $state {
|
|
|
|
$(
|
|
pub mod $dir {
|
|
#![allow(unused_imports)]
|
|
use crate::protocol::*;
|
|
use std::io;
|
|
use crate::format;
|
|
use crate::nbt;
|
|
use crate::types;
|
|
use crate::item;
|
|
use crate::shared::Position;
|
|
|
|
|
|
#[allow(non_upper_case_globals)]
|
|
pub mod internal_ids {
|
|
create_ids!(i32, $($name),*);
|
|
}
|
|
|
|
$(
|
|
#[derive(Default, Debug)]
|
|
$(#[$attr])* pub struct $name {
|
|
$($(#[$fattr])* pub $field: $field_type),+,
|
|
}
|
|
|
|
impl PacketType for $name {
|
|
|
|
fn packet_id(&self, version: i32) -> i32 {
|
|
packet::versions::translate_internal_packet_id_for_version(version, State::$stateName, Direction::$dirName, internal_ids::$name, false)
|
|
}
|
|
|
|
fn write<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
$(
|
|
if true $(&& ($cond(&self)))* {
|
|
self.$field.write_to(buf)?;
|
|
}
|
|
)+
|
|
|
|
Result::Ok(())
|
|
}
|
|
}
|
|
)*
|
|
}
|
|
)+
|
|
}
|
|
)+
|
|
|
|
/// Returns the packet for the given state, direction and id after parsing the fields
|
|
/// from the buffer.
|
|
pub fn packet_by_id<R: io::Read>(version: i32, state: State, dir: Direction, id: i32, mut buf: &mut R) -> Result<Option<Packet>, Error> {
|
|
match state {
|
|
$(
|
|
State::$stateName => {
|
|
match dir {
|
|
$(
|
|
Direction::$dirName => {
|
|
let internal_id = packet::versions::translate_internal_packet_id_for_version(version, state, dir, id, true);
|
|
match internal_id {
|
|
$(
|
|
self::$state::$dir::internal_ids::$name => {
|
|
use self::$state::$dir::$name;
|
|
let mut packet : $name = $name::default();
|
|
$(
|
|
if true $(&& ($cond(&packet)))* {
|
|
packet.$field = Serializable::read_from(&mut buf)?;
|
|
}
|
|
)+
|
|
Result::Ok(Option::Some(Packet::$name(packet)))
|
|
},
|
|
)*
|
|
_ => Result::Ok(Option::None)
|
|
}
|
|
}
|
|
)+
|
|
}
|
|
}
|
|
)+
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#[macro_export]
|
|
macro_rules! protocol_packet_ids {
|
|
($($state:ident $stateName:ident {
|
|
$($dir:ident $dirName:ident {
|
|
$(
|
|
$(#[$attr:meta])*
|
|
$id:expr => $name:ident
|
|
)*
|
|
})+
|
|
})+) => {
|
|
use crate::protocol::*;
|
|
|
|
pub fn translate_internal_packet_id(state: State, dir: Direction, id: i32, to_internal: bool) -> i32 {
|
|
match state {
|
|
$(
|
|
State::$stateName => {
|
|
match dir {
|
|
$(
|
|
Direction::$dirName => {
|
|
if to_internal {
|
|
match id {
|
|
$(
|
|
$id => crate::protocol::packet::$state::$dir::internal_ids::$name,
|
|
)*
|
|
_ => panic!("bad packet id 0x{:x} in {:?} {:?}", id, dir, state),
|
|
}
|
|
} else {
|
|
match id {
|
|
$(
|
|
crate::protocol::packet::$state::$dir::internal_ids::$name => $id,
|
|
)*
|
|
_ => panic!("bad packet internal id 0x{:x} in {:?} {:?}", id, dir, state),
|
|
}
|
|
}
|
|
}
|
|
)*
|
|
}
|
|
}
|
|
)*
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
pub mod packet;
|
|
pub mod versions;
|
|
pub trait Serializable: Sized {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<Self, Error>;
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error>;
|
|
}
|
|
|
|
impl Serializable for Vec<u8> {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<Vec<u8>, Error> {
|
|
let mut v = Vec::new();
|
|
buf.read_to_end(&mut v)?;
|
|
Ok(v)
|
|
}
|
|
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
buf.write_all(&self[..]).map_err(|v| v.into())
|
|
}
|
|
}
|
|
|
|
impl Serializable for Option<nbt::NamedTag> {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<Option<nbt::NamedTag>, Error> {
|
|
let ty = buf.read_u8()?;
|
|
if ty == 0 {
|
|
Result::Ok(None)
|
|
} else {
|
|
let name = nbt::read_string(buf)?;
|
|
let tag = nbt::Tag::read_from(buf)?;
|
|
Result::Ok(Some(nbt::NamedTag(name, tag)))
|
|
}
|
|
}
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
match *self {
|
|
Some(ref val) => {
|
|
buf.write_u8(10)?;
|
|
nbt::write_string(buf, &val.0)?;
|
|
val.1.write_to(buf)?;
|
|
}
|
|
None => buf.write_u8(0)?,
|
|
}
|
|
Result::Ok(())
|
|
}
|
|
}
|
|
|
|
impl<T> Serializable for Option<T>
|
|
where
|
|
T: Serializable,
|
|
{
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<Option<T>, Error> {
|
|
Result::Ok(Some(T::read_from(buf)?))
|
|
}
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
if self.is_some() {
|
|
self.as_ref().unwrap().write_to(buf)?;
|
|
}
|
|
Result::Ok(())
|
|
}
|
|
}
|
|
|
|
impl Serializable for String {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<String, Error> {
|
|
let len = VarInt::read_from(buf)?.0;
|
|
debug_assert!(len >= 0, "Negative string length: {}", len);
|
|
debug_assert!(len <= 65536, "String length too big: {}", len);
|
|
let mut bytes = Vec::<u8>::new();
|
|
buf.take(len as u64).read_to_end(&mut bytes)?;
|
|
let ret = String::from_utf8(bytes).unwrap();
|
|
Result::Ok(ret)
|
|
}
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
let bytes = self.as_bytes();
|
|
VarInt(bytes.len() as i32).write_to(buf)?;
|
|
buf.write_all(bytes)?;
|
|
Result::Ok(())
|
|
}
|
|
}
|
|
|
|
impl Serializable for format::Component {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<Self, Error> {
|
|
let len = VarInt::read_from(buf)?.0;
|
|
let mut bytes = Vec::<u8>::new();
|
|
buf.take(len as u64).read_to_end(&mut bytes)?;
|
|
let ret = String::from_utf8(bytes).unwrap();
|
|
Result::Ok(Self::from_string(&ret[..]))
|
|
}
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
let val = serde_json::to_string(&self.to_value()).unwrap();
|
|
let bytes = val.as_bytes();
|
|
VarInt(bytes.len() as i32).write_to(buf)?;
|
|
buf.write_all(bytes)?;
|
|
Result::Ok(())
|
|
}
|
|
}
|
|
|
|
impl Serializable for () {
|
|
fn read_from<R: io::Read>(_: &mut R) -> Result<(), Error> {
|
|
Result::Ok(())
|
|
}
|
|
fn write_to<W: io::Write>(&self, _: &mut W) -> Result<(), Error> {
|
|
Result::Ok(())
|
|
}
|
|
}
|
|
|
|
impl Serializable for bool {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<bool, Error> {
|
|
Result::Ok(buf.read_u8()? != 0)
|
|
}
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
buf.write_u8(if *self { 1 } else { 0 })?;
|
|
Result::Ok(())
|
|
}
|
|
}
|
|
|
|
impl Serializable for i8 {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<i8, Error> {
|
|
Result::Ok(buf.read_i8()?)
|
|
}
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
buf.write_i8(*self)?;
|
|
Result::Ok(())
|
|
}
|
|
}
|
|
|
|
impl Serializable for i16 {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<i16, Error> {
|
|
Result::Ok(buf.read_i16::<BigEndian>()?)
|
|
}
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
buf.write_i16::<BigEndian>(*self)?;
|
|
Result::Ok(())
|
|
}
|
|
}
|
|
|
|
impl Serializable for i32 {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<i32, Error> {
|
|
Result::Ok(buf.read_i32::<BigEndian>()?)
|
|
}
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
buf.write_i32::<BigEndian>(*self)?;
|
|
Result::Ok(())
|
|
}
|
|
}
|
|
|
|
impl Serializable for i64 {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<i64, Error> {
|
|
Result::Ok(buf.read_i64::<BigEndian>()?)
|
|
}
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
buf.write_i64::<BigEndian>(*self)?;
|
|
Result::Ok(())
|
|
}
|
|
}
|
|
|
|
impl Serializable for u8 {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<u8, Error> {
|
|
Result::Ok(buf.read_u8()?)
|
|
}
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
buf.write_u8(*self)?;
|
|
Result::Ok(())
|
|
}
|
|
}
|
|
|
|
impl Serializable for u16 {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<u16, Error> {
|
|
Result::Ok(buf.read_u16::<BigEndian>()?)
|
|
}
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
buf.write_u16::<BigEndian>(*self)?;
|
|
Result::Ok(())
|
|
}
|
|
}
|
|
|
|
impl Serializable for u64 {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<u64, Error> {
|
|
Result::Ok(buf.read_u64::<BigEndian>()?)
|
|
}
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
buf.write_u64::<BigEndian>(*self)?;
|
|
Result::Ok(())
|
|
}
|
|
}
|
|
|
|
impl Serializable for f32 {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<f32, Error> {
|
|
Result::Ok(buf.read_f32::<BigEndian>()?)
|
|
}
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
buf.write_f32::<BigEndian>(*self)?;
|
|
Result::Ok(())
|
|
}
|
|
}
|
|
|
|
impl Serializable for f64 {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<f64, Error> {
|
|
Result::Ok(buf.read_f64::<BigEndian>()?)
|
|
}
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
buf.write_f64::<BigEndian>(*self)?;
|
|
Result::Ok(())
|
|
}
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Eq, Hash, Clone)]
|
|
pub struct UUID(u64, u64);
|
|
|
|
#[derive(Debug)]
|
|
pub struct UUIDParseError;
|
|
impl std::error::Error for UUIDParseError {}
|
|
|
|
impl fmt::Display for UUIDParseError {
|
|
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
|
write!(f, "Invalid UUID format")
|
|
}
|
|
}
|
|
|
|
impl std::str::FromStr for UUID {
|
|
type Err = UUIDParseError;
|
|
fn from_str(s: &str) -> Result<Self, Self::Err> {
|
|
if s.len() != 36 {
|
|
return Err(UUIDParseError {});
|
|
}
|
|
let mut parts = hex::decode(&s[..8]).unwrap();
|
|
parts.extend_from_slice(&hex::decode(&s[9..13]).unwrap());
|
|
parts.extend_from_slice(&hex::decode(&s[14..18]).unwrap());
|
|
parts.extend_from_slice(&hex::decode(&s[19..23]).unwrap());
|
|
parts.extend_from_slice(&hex::decode(&s[24..36]).unwrap());
|
|
let mut high = 0u64;
|
|
let mut low = 0u64;
|
|
for i in 0..8 {
|
|
high |= (parts[i] as u64) << (56 - i * 8);
|
|
low |= (parts[i + 8] as u64) << (56 - i * 8);
|
|
}
|
|
Ok(UUID(high, low))
|
|
}
|
|
}
|
|
|
|
impl Default for UUID {
|
|
fn default() -> Self {
|
|
UUID(0, 0)
|
|
}
|
|
}
|
|
|
|
impl Serializable for UUID {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<UUID, Error> {
|
|
Result::Ok(UUID(
|
|
buf.read_u64::<BigEndian>()?,
|
|
buf.read_u64::<BigEndian>()?,
|
|
))
|
|
}
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
buf.write_u64::<BigEndian>(self.0)?;
|
|
buf.write_u64::<BigEndian>(self.1)?;
|
|
Result::Ok(())
|
|
}
|
|
}
|
|
|
|
pub struct Biomes3D {
|
|
pub data: [i32; 1024],
|
|
}
|
|
|
|
impl fmt::Debug for Biomes3D {
|
|
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
|
write!(f, "Biomes3D(")?;
|
|
for i in 0..1024 {
|
|
write!(f, "{}, ", self.data[i])?;
|
|
}
|
|
write!(f, ")")
|
|
}
|
|
}
|
|
|
|
impl Default for Biomes3D {
|
|
fn default() -> Self {
|
|
Biomes3D { data: [0; 1024] }
|
|
}
|
|
}
|
|
|
|
impl Serializable for Biomes3D {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<Biomes3D, Error> {
|
|
let data: [i32; 1024] = [0; 1024];
|
|
|
|
// Non-length-prefixed three-dimensional biome data
|
|
for item in &mut data.to_vec() {
|
|
let b: i32 = Serializable::read_from(buf)?;
|
|
*item = b;
|
|
}
|
|
|
|
Result::Ok(Biomes3D { data })
|
|
}
|
|
fn write_to<W: io::Write>(&self, _buf: &mut W) -> Result<(), Error> {
|
|
unimplemented!()
|
|
}
|
|
}
|
|
|
|
pub trait Lengthable: Serializable + Copy + Default {
|
|
fn into_len(self) -> usize;
|
|
fn from_len(_: usize) -> Self;
|
|
}
|
|
|
|
pub struct LenPrefixed<L: Lengthable, V> {
|
|
len: L,
|
|
pub data: Vec<V>,
|
|
}
|
|
|
|
impl<L: Lengthable, V: Default> LenPrefixed<L, V> {
|
|
pub fn new(data: Vec<V>) -> LenPrefixed<L, V> {
|
|
LenPrefixed {
|
|
len: Default::default(),
|
|
data,
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<L: Lengthable, V: Serializable> Serializable for LenPrefixed<L, V> {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<LenPrefixed<L, V>, Error> {
|
|
let len_data: L = Serializable::read_from(buf)?;
|
|
let len: usize = len_data.into_len();
|
|
let mut data: Vec<V> = Vec::with_capacity(len);
|
|
for _ in 0..len {
|
|
data.push(Serializable::read_from(buf)?);
|
|
}
|
|
Result::Ok(LenPrefixed {
|
|
len: len_data,
|
|
data,
|
|
})
|
|
}
|
|
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
let len_data: L = L::from_len(self.data.len());
|
|
len_data.write_to(buf)?;
|
|
let data = &self.data;
|
|
for val in data {
|
|
val.write_to(buf)?;
|
|
}
|
|
Result::Ok(())
|
|
}
|
|
}
|
|
|
|
impl<L: Lengthable, V: Default> Default for LenPrefixed<L, V> {
|
|
fn default() -> Self {
|
|
LenPrefixed {
|
|
len: default::Default::default(),
|
|
data: default::Default::default(),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<L: Lengthable, V: fmt::Debug> fmt::Debug for LenPrefixed<L, V> {
|
|
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
|
self.data.fmt(f)
|
|
}
|
|
}
|
|
|
|
// Optimization
|
|
pub struct LenPrefixedBytes<L: Lengthable> {
|
|
len: L,
|
|
pub data: Vec<u8>,
|
|
}
|
|
|
|
impl<L: Lengthable> LenPrefixedBytes<L> {
|
|
pub fn new(data: Vec<u8>) -> LenPrefixedBytes<L> {
|
|
LenPrefixedBytes {
|
|
len: Default::default(),
|
|
data,
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<L: Lengthable> Serializable for LenPrefixedBytes<L> {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<LenPrefixedBytes<L>, Error> {
|
|
let len_data: L = Serializable::read_from(buf)?;
|
|
let len: usize = len_data.into_len();
|
|
let mut data: Vec<u8> = Vec::with_capacity(len);
|
|
buf.take(len as u64).read_to_end(&mut data)?;
|
|
Result::Ok(LenPrefixedBytes {
|
|
len: len_data,
|
|
data,
|
|
})
|
|
}
|
|
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
let len_data: L = L::from_len(self.data.len());
|
|
len_data.write_to(buf)?;
|
|
buf.write_all(&self.data[..])?;
|
|
Result::Ok(())
|
|
}
|
|
}
|
|
|
|
impl<L: Lengthable> Default for LenPrefixedBytes<L> {
|
|
fn default() -> Self {
|
|
LenPrefixedBytes {
|
|
len: default::Default::default(),
|
|
data: default::Default::default(),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<L: Lengthable> fmt::Debug for LenPrefixedBytes<L> {
|
|
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
|
self.data.fmt(f)
|
|
}
|
|
}
|
|
|
|
impl Lengthable for bool {
|
|
fn into_len(self) -> usize {
|
|
if self {
|
|
1
|
|
} else {
|
|
0
|
|
}
|
|
}
|
|
|
|
fn from_len(u: usize) -> bool {
|
|
u != 0
|
|
}
|
|
}
|
|
|
|
impl Lengthable for u8 {
|
|
fn into_len(self) -> usize {
|
|
self as usize
|
|
}
|
|
|
|
fn from_len(u: usize) -> u8 {
|
|
u as u8
|
|
}
|
|
}
|
|
|
|
impl Lengthable for i16 {
|
|
fn into_len(self) -> usize {
|
|
self as usize
|
|
}
|
|
|
|
fn from_len(u: usize) -> i16 {
|
|
u as i16
|
|
}
|
|
}
|
|
|
|
impl Lengthable for i32 {
|
|
fn into_len(self) -> usize {
|
|
self as usize
|
|
}
|
|
|
|
fn from_len(u: usize) -> i32 {
|
|
u as i32
|
|
}
|
|
}
|
|
|
|
use num_traits::cast::{cast, NumCast};
|
|
/// `FixedPoint5` has the 5 least-significant bits for the fractional
|
|
/// part, upper for integer part: https://wiki.vg/Data_types#Fixed-point_numbers
|
|
#[derive(Clone, Copy)]
|
|
pub struct FixedPoint5<T>(T);
|
|
|
|
impl<T: Serializable> Serializable for FixedPoint5<T> {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<Self, Error> {
|
|
Ok(Self(Serializable::read_from(buf)?))
|
|
}
|
|
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
self.0.write_to(buf)
|
|
}
|
|
}
|
|
|
|
impl<T: default::Default> default::Default for FixedPoint5<T> {
|
|
fn default() -> Self {
|
|
Self(T::default())
|
|
}
|
|
}
|
|
|
|
impl<T: NumCast> convert::From<f64> for FixedPoint5<T> {
|
|
fn from(x: f64) -> Self {
|
|
let n: T = cast(x * 32.0).unwrap();
|
|
FixedPoint5::<T>(n)
|
|
}
|
|
}
|
|
|
|
impl<T: NumCast> convert::From<FixedPoint5<T>> for f64 {
|
|
fn from(x: FixedPoint5<T>) -> Self {
|
|
let f: f64 = cast(x.0).unwrap();
|
|
f / 32.0
|
|
}
|
|
}
|
|
|
|
impl<T> fmt::Debug for FixedPoint5<T>
|
|
where
|
|
T: fmt::Display,
|
|
f64: convert::From<T>,
|
|
T: NumCast + Copy,
|
|
{
|
|
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
|
let x: f64 = (*self).into();
|
|
write!(f, "FixedPoint5(#{} = {}f)", self.0, x)
|
|
}
|
|
}
|
|
|
|
/// `FixedPoint12` is like `FixedPoint5` but the fractional part is 12-bit
|
|
#[derive(Clone, Copy)]
|
|
pub struct FixedPoint12<T>(T);
|
|
|
|
impl<T: Serializable> Serializable for FixedPoint12<T> {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<Self, Error> {
|
|
Ok(Self(Serializable::read_from(buf)?))
|
|
}
|
|
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
self.0.write_to(buf)
|
|
}
|
|
}
|
|
|
|
impl<T: default::Default> default::Default for FixedPoint12<T> {
|
|
fn default() -> Self {
|
|
Self(T::default())
|
|
}
|
|
}
|
|
|
|
impl<T: NumCast> convert::From<f64> for FixedPoint12<T> {
|
|
fn from(x: f64) -> Self {
|
|
let n: T = cast(x * 32.0 * 128.0).unwrap();
|
|
FixedPoint12::<T>(n)
|
|
}
|
|
}
|
|
|
|
impl<T: NumCast> convert::From<FixedPoint12<T>> for f64 {
|
|
fn from(x: FixedPoint12<T>) -> Self {
|
|
let f: f64 = cast(x.0).unwrap();
|
|
f / (32.0 * 128.0)
|
|
}
|
|
}
|
|
|
|
impl<T> fmt::Debug for FixedPoint12<T>
|
|
where
|
|
T: fmt::Display,
|
|
f64: convert::From<T>,
|
|
T: NumCast + Copy,
|
|
{
|
|
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
|
let x: f64 = (*self).into();
|
|
write!(f, "FixedPoint12(#{} = {}f)", self.0, x)
|
|
}
|
|
}
|
|
|
|
/// `VarInt` have a variable size (between 1 and 5 bytes) when encoded based
|
|
/// on the size of the number
|
|
#[derive(Clone, Copy)]
|
|
pub struct VarInt(pub i32);
|
|
|
|
impl Lengthable for VarInt {
|
|
fn into_len(self) -> usize {
|
|
self.0 as usize
|
|
}
|
|
|
|
fn from_len(u: usize) -> VarInt {
|
|
VarInt(u as i32)
|
|
}
|
|
}
|
|
|
|
impl Serializable for VarInt {
|
|
/// Decodes a `VarInt` from the Reader
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<VarInt, Error> {
|
|
const PART: u32 = 0x7F;
|
|
let mut size = 0;
|
|
let mut val = 0u32;
|
|
loop {
|
|
let b = buf.read_u8()? as u32;
|
|
val |= (b & PART) << (size * 7);
|
|
size += 1;
|
|
if size > 5 {
|
|
return Result::Err(Error::Err("VarInt too big".to_owned()));
|
|
}
|
|
if (b & 0x80) == 0 {
|
|
break;
|
|
}
|
|
}
|
|
|
|
Result::Ok(VarInt(val as i32))
|
|
}
|
|
|
|
/// Encodes a `VarInt` into the Writer
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
const PART: u32 = 0x7F;
|
|
let mut val = self.0 as u32;
|
|
loop {
|
|
if (val & !PART) == 0 {
|
|
buf.write_u8(val as u8)?;
|
|
return Result::Ok(());
|
|
}
|
|
buf.write_u8(((val & PART) | 0x80) as u8)?;
|
|
val >>= 7;
|
|
}
|
|
}
|
|
}
|
|
|
|
impl default::Default for VarInt {
|
|
fn default() -> VarInt {
|
|
VarInt(0)
|
|
}
|
|
}
|
|
|
|
impl fmt::Debug for VarInt {
|
|
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
|
write!(f, "{}", self.0)
|
|
}
|
|
}
|
|
|
|
/// `VarShort` have a variable size (2 or 3 bytes) and are backwards-compatible
|
|
/// with vanilla shorts, used for Forge custom payloads
|
|
#[derive(Clone, Copy)]
|
|
pub struct VarShort(pub i32);
|
|
|
|
impl Lengthable for VarShort {
|
|
fn into_len(self) -> usize {
|
|
self.0 as usize
|
|
}
|
|
|
|
fn from_len(u: usize) -> VarShort {
|
|
VarShort(u as i32)
|
|
}
|
|
}
|
|
|
|
impl Serializable for VarShort {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<VarShort, Error> {
|
|
let low = buf.read_u16::<BigEndian>()? as u32;
|
|
let val = if (low & 0x8000) != 0 {
|
|
let high = buf.read_u8()? as u32;
|
|
|
|
(high << 15) | (low & 0x7fff)
|
|
} else {
|
|
low
|
|
};
|
|
|
|
Result::Ok(VarShort(val as i32))
|
|
}
|
|
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
assert!(
|
|
self.0 >= 0 && self.0 <= 0x7fffff,
|
|
"VarShort invalid value: {}",
|
|
self.0
|
|
);
|
|
let mut low = self.0 & 0x7fff;
|
|
let high = (self.0 & 0x7f8000) >> 15;
|
|
if high != 0 {
|
|
low |= 0x8000;
|
|
}
|
|
|
|
buf.write_u16::<BigEndian>(low as u16)?;
|
|
|
|
if high != 0 {
|
|
buf.write_u8(high as u8)?;
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
impl default::Default for VarShort {
|
|
fn default() -> VarShort {
|
|
VarShort(0)
|
|
}
|
|
}
|
|
|
|
impl fmt::Debug for VarShort {
|
|
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
|
write!(f, "{}", self.0)
|
|
}
|
|
}
|
|
|
|
/// `VarLong` have a variable size (between 1 and 10 bytes) when encoded based
|
|
/// on the size of the number
|
|
#[derive(Clone, Copy)]
|
|
pub struct VarLong(pub i64);
|
|
|
|
impl Lengthable for VarLong {
|
|
fn into_len(self) -> usize {
|
|
self.0 as usize
|
|
}
|
|
|
|
fn from_len(u: usize) -> VarLong {
|
|
VarLong(u as i64)
|
|
}
|
|
}
|
|
|
|
impl Serializable for VarLong {
|
|
/// Decodes a `VarLong` from the Reader
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<VarLong, Error> {
|
|
const PART: u64 = 0x7F;
|
|
let mut size = 0;
|
|
let mut val = 0u64;
|
|
loop {
|
|
let b = buf.read_u8()? as u64;
|
|
val |= (b & PART) << (size * 7);
|
|
size += 1;
|
|
if size > 10 {
|
|
return Result::Err(Error::Err("VarLong too big".to_owned()));
|
|
}
|
|
if (b & 0x80) == 0 {
|
|
break;
|
|
}
|
|
}
|
|
|
|
Result::Ok(VarLong(val as i64))
|
|
}
|
|
|
|
/// Encodes a `VarLong` into the Writer
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
const PART: u64 = 0x7F;
|
|
let mut val = self.0 as u64;
|
|
loop {
|
|
if (val & !PART) == 0 {
|
|
buf.write_u8(val as u8)?;
|
|
return Result::Ok(());
|
|
}
|
|
buf.write_u8(((val & PART) | 0x80) as u8)?;
|
|
val >>= 7;
|
|
}
|
|
}
|
|
}
|
|
|
|
impl default::Default for VarLong {
|
|
fn default() -> VarLong {
|
|
VarLong(0)
|
|
}
|
|
}
|
|
|
|
impl fmt::Debug for VarLong {
|
|
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
|
write!(f, "{}", self.0)
|
|
}
|
|
}
|
|
|
|
impl Serializable for Position {
|
|
fn read_from<R: io::Read>(buf: &mut R) -> Result<Position, Error> {
|
|
let pos = buf.read_u64::<BigEndian>()?;
|
|
Ok(Position::new(
|
|
((pos as i64) >> 38) as i32,
|
|
((pos as i64) & 0xFFF) as i32,
|
|
((pos as i64) << 26 >> 38) as i32,
|
|
))
|
|
}
|
|
fn write_to<W: io::Write>(&self, buf: &mut W) -> Result<(), Error> {
|
|
let pos = (((self.x as u64) & 0x3FFFFFF) << 38)
|
|
| ((self.y as u64) & 0xFFF)
|
|
| (((self.z as u64) & 0x3FFFFFF) << 12);
|
|
|
|
buf.write_u64::<BigEndian>(pos)?;
|
|
Result::Ok(())
|
|
}
|
|
}
|
|
|
|
/// Direction is used to define whether packets are going to the
|
|
/// server or the client.
|
|
#[derive(Clone, Copy, Debug)]
|
|
pub enum Direction {
|
|
Serverbound,
|
|
Clientbound,
|
|
}
|
|
|
|
/// The protocol has multiple 'sub-protocols' or states which control which
|
|
/// packet an id points to.
|
|
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
|
|
pub enum State {
|
|
Handshaking,
|
|
Play,
|
|
Status,
|
|
Login,
|
|
}
|
|
|
|
/// Return for any protocol related error.
|
|
#[derive(Debug)]
|
|
pub enum Error {
|
|
Err(String),
|
|
Disconnect(format::Component),
|
|
IOError(io::Error),
|
|
Json(serde_json::Error),
|
|
#[cfg(not(target_arch = "wasm32"))]
|
|
Reqwest(reqwest::Error),
|
|
}
|
|
|
|
impl convert::From<io::Error> for Error {
|
|
fn from(e: io::Error) -> Error {
|
|
Error::IOError(e)
|
|
}
|
|
}
|
|
|
|
impl convert::From<serde_json::Error> for Error {
|
|
fn from(e: serde_json::Error) -> Error {
|
|
Error::Json(e)
|
|
}
|
|
}
|
|
|
|
#[cfg(not(target_arch = "wasm32"))]
|
|
impl convert::From<reqwest::Error> for Error {
|
|
fn from(e: reqwest::Error) -> Error {
|
|
Error::Reqwest(e)
|
|
}
|
|
}
|
|
|
|
impl ::std::error::Error for Error {}
|
|
|
|
impl ::std::fmt::Display for Error {
|
|
fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
|
|
match *self {
|
|
Error::Err(ref val) => write!(f, "protocol error: {}", val),
|
|
Error::Disconnect(ref val) => write!(f, "{}", val),
|
|
Error::IOError(ref e) => e.fmt(f),
|
|
Error::Json(ref e) => e.fmt(f),
|
|
#[cfg(not(target_arch = "wasm32"))]
|
|
Error::Reqwest(ref e) => e.fmt(f),
|
|
}
|
|
}
|
|
}
|
|
|
|
type Aes128Cfb = Cfb8<Aes128>;
|
|
|
|
pub struct Conn {
|
|
stream: TcpStream,
|
|
pub host: String,
|
|
pub port: u16,
|
|
direction: Direction,
|
|
pub protocol_version: i32,
|
|
pub state: State,
|
|
|
|
cipher: Option<Aes128Cfb>,
|
|
|
|
pub compression_threshold: i32,
|
|
}
|
|
|
|
impl Conn {
|
|
pub fn new(target: &str, protocol_version: i32) -> Result<Conn, Error> {
|
|
CURRENT_PROTOCOL_VERSION.store(protocol_version, Ordering::Relaxed);
|
|
|
|
// TODO SRV record support
|
|
let mut parts = target.split(':').collect::<Vec<&str>>();
|
|
let address = if parts.len() == 1 {
|
|
parts.push("25565");
|
|
format!("{}:25565", parts[0])
|
|
} else {
|
|
format!("{}:{}", parts[0], parts[1])
|
|
};
|
|
let stream = TcpStream::connect(&*address)?;
|
|
Result::Ok(Conn {
|
|
stream,
|
|
host: parts[0].to_owned(),
|
|
port: parts[1].parse().unwrap(),
|
|
direction: Direction::Serverbound,
|
|
state: State::Handshaking,
|
|
protocol_version,
|
|
cipher: Option::None,
|
|
compression_threshold: -1,
|
|
})
|
|
}
|
|
|
|
pub fn write_packet<T: PacketType>(&mut self, packet: T) -> Result<(), Error> {
|
|
let mut buf = Vec::new();
|
|
VarInt(packet.packet_id(self.protocol_version)).write_to(&mut buf)?;
|
|
packet.write(&mut buf)?;
|
|
|
|
let mut extra = if self.compression_threshold >= 0 {
|
|
1
|
|
} else {
|
|
0
|
|
};
|
|
if self.compression_threshold >= 0 && buf.len() as i32 > self.compression_threshold {
|
|
extra = 0;
|
|
let uncompressed_size = buf.len();
|
|
let mut new = Vec::new();
|
|
VarInt(uncompressed_size as i32).write_to(&mut new)?;
|
|
let mut write = ZlibEncoder::new(io::Cursor::new(buf), Compression::default());
|
|
write.read_to_end(&mut new)?;
|
|
if is_network_debug() {
|
|
debug!(
|
|
"Compressed for sending {} bytes to {} since > threshold {}, new={:?}",
|
|
uncompressed_size,
|
|
new.len(),
|
|
self.compression_threshold,
|
|
new
|
|
);
|
|
}
|
|
buf = new;
|
|
}
|
|
|
|
VarInt(buf.len() as i32 + extra).write_to(self)?;
|
|
if self.compression_threshold >= 0 && extra == 1 {
|
|
VarInt(0).write_to(self)?;
|
|
}
|
|
self.write_all(&buf)?;
|
|
|
|
Ok(())
|
|
}
|
|
|
|
pub fn write_plugin_message(&mut self, channel: &str, data: &[u8]) -> Result<(), Error> {
|
|
if is_network_debug() {
|
|
debug!(
|
|
"Sending plugin message: channel={}, data={:?}",
|
|
channel, data
|
|
);
|
|
}
|
|
debug_assert!(self.state == State::Play);
|
|
if self.protocol_version >= 47 {
|
|
self.write_packet(packet::play::serverbound::PluginMessageServerbound {
|
|
channel: channel.to_string(),
|
|
data: data.to_vec(),
|
|
})?;
|
|
} else {
|
|
self.write_packet(packet::play::serverbound::PluginMessageServerbound_i16 {
|
|
channel: channel.to_string(),
|
|
data: LenPrefixedBytes::<VarShort>::new(data.to_vec()),
|
|
})?;
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
pub fn write_fmlhs_plugin_message(&mut self, msg: &forge::FmlHs) -> Result<(), Error> {
|
|
let mut buf: Vec<u8> = vec![];
|
|
msg.write_to(&mut buf)?;
|
|
|
|
self.write_plugin_message("FML|HS", &buf)
|
|
}
|
|
|
|
pub fn write_login_plugin_response(
|
|
&mut self,
|
|
message_id: VarInt,
|
|
successful: bool,
|
|
data: &[u8],
|
|
) -> Result<(), Error> {
|
|
if is_network_debug() {
|
|
debug!(
|
|
"Sending login plugin message: message_id={:?}, successful={:?}, data={:?}",
|
|
message_id, successful, data,
|
|
);
|
|
}
|
|
debug_assert!(self.state == State::Login);
|
|
self.write_packet(packet::login::serverbound::LoginPluginResponse {
|
|
message_id,
|
|
successful,
|
|
data: data.to_vec(),
|
|
})
|
|
}
|
|
|
|
pub fn write_fml2_handshake_plugin_message(
|
|
&mut self,
|
|
message_id: VarInt,
|
|
msg: Option<&forge::fml2::FmlHandshake>,
|
|
) -> Result<(), Error> {
|
|
if let Some(msg) = msg {
|
|
let mut inner_buf: Vec<u8> = vec![];
|
|
msg.write_to(&mut inner_buf)?;
|
|
|
|
let mut outer_buf: Vec<u8> = vec![];
|
|
"fml:handshake".to_string().write_to(&mut outer_buf)?;
|
|
VarInt(inner_buf.len() as i32).write_to(&mut outer_buf)?;
|
|
inner_buf.write_to(&mut outer_buf)?;
|
|
|
|
self.write_login_plugin_response(message_id, true, &outer_buf)
|
|
} else {
|
|
unimplemented!() // successful: false, no payload
|
|
}
|
|
}
|
|
|
|
#[allow(clippy::type_complexity)]
|
|
pub fn read_raw_packet_from<R: io::Read>(
|
|
buf: &mut R,
|
|
compression_threshold: i32,
|
|
) -> Result<(i32, Box<io::Cursor<Vec<u8>>>), Error> {
|
|
let len = VarInt::read_from(buf)?.0 as usize;
|
|
let mut ibuf = vec![0; len];
|
|
buf.read_exact(&mut ibuf)?;
|
|
|
|
let mut buf = io::Cursor::new(ibuf);
|
|
|
|
if compression_threshold >= 0 {
|
|
let uncompressed_size = VarInt::read_from(&mut buf)?.0;
|
|
if uncompressed_size != 0 {
|
|
let mut new = Vec::with_capacity(uncompressed_size as usize);
|
|
{
|
|
let mut reader = ZlibDecoder::new(buf);
|
|
reader.read_to_end(&mut new)?;
|
|
}
|
|
if is_network_debug() {
|
|
debug!(
|
|
"Decompressed threshold={} len={} uncompressed_size={} to {} bytes",
|
|
compression_threshold,
|
|
len,
|
|
uncompressed_size,
|
|
new.len()
|
|
);
|
|
}
|
|
buf = io::Cursor::new(new);
|
|
}
|
|
}
|
|
let id = VarInt::read_from(&mut buf)?.0;
|
|
|
|
Ok((id, Box::new(buf)))
|
|
}
|
|
|
|
pub fn read_packet(&mut self) -> Result<packet::Packet, Error> {
|
|
let compression_threshold = self.compression_threshold;
|
|
let (id, mut buf) = Conn::read_raw_packet_from(self, compression_threshold)?;
|
|
|
|
let dir = match self.direction {
|
|
Direction::Clientbound => Direction::Serverbound,
|
|
Direction::Serverbound => Direction::Clientbound,
|
|
};
|
|
|
|
if is_network_debug() {
|
|
debug!(
|
|
"about to parse id={:x}, dir={:?} state={:?}",
|
|
id, dir, self.state
|
|
);
|
|
fs::File::create("last-packet")?.write_all(buf.get_ref())?;
|
|
}
|
|
|
|
let packet = packet::packet_by_id(self.protocol_version, self.state, dir, id, &mut buf)?;
|
|
|
|
if is_network_debug() {
|
|
debug!("packet = {:?}", packet);
|
|
}
|
|
|
|
match packet {
|
|
Some(val) => {
|
|
let pos = buf.position() as usize;
|
|
let ibuf = buf.into_inner();
|
|
if ibuf.len() != pos {
|
|
debug!("pos = {:?}", pos);
|
|
debug!("ibuf = {:?}", ibuf);
|
|
return Result::Err(Error::Err(format!(
|
|
"Failed to read all of packet 0x{:X}, \
|
|
had {} bytes left",
|
|
id,
|
|
ibuf.len() - pos
|
|
)));
|
|
}
|
|
Result::Ok(val)
|
|
}
|
|
None => Result::Err(Error::Err("missing packet".to_owned())),
|
|
}
|
|
}
|
|
|
|
pub fn enable_encyption(&mut self, key: &[u8], _decrypt: bool) {
|
|
let cipher = Aes128Cfb::new_from_slices(key, key).unwrap();
|
|
self.cipher = Option::Some(cipher);
|
|
}
|
|
|
|
pub fn set_compresssion(&mut self, threshold: i32) {
|
|
self.compression_threshold = threshold;
|
|
}
|
|
|
|
pub fn do_status(mut self) -> Result<(Status, Duration), Error> {
|
|
use self::packet::handshake::serverbound::Handshake;
|
|
use self::packet::status::serverbound::*;
|
|
use self::packet::Packet;
|
|
use serde_json::Value;
|
|
let host = self.host.clone();
|
|
let port = self.port;
|
|
self.write_packet(Handshake {
|
|
protocol_version: VarInt(self.protocol_version),
|
|
host,
|
|
port,
|
|
next: VarInt(1),
|
|
})?;
|
|
self.state = State::Status;
|
|
|
|
self.write_packet(StatusRequest { empty: () })?;
|
|
|
|
let status = if let Packet::StatusResponse(res) = self.read_packet()? {
|
|
res.status
|
|
} else {
|
|
return Err(Error::Err("Wrong packet".to_owned()));
|
|
};
|
|
|
|
let start = Instant::now();
|
|
self.write_packet(StatusPing { ping: 42 })?;
|
|
|
|
if let Packet::StatusPong(_) = self.read_packet()? {
|
|
} else {
|
|
return Err(Error::Err("Wrong packet".to_owned()));
|
|
};
|
|
|
|
let ping = start.elapsed();
|
|
|
|
let val: Value = match serde_json::from_str(&status) {
|
|
Ok(val) => val,
|
|
Err(_) => return Err(Error::Err("Json parse error".to_owned())),
|
|
};
|
|
|
|
let invalid_status = || Error::Err("Invalid status".to_owned());
|
|
|
|
let version = val.get("version").ok_or_else(invalid_status)?;
|
|
let players = val.get("players").ok_or_else(invalid_status)?;
|
|
|
|
// For modded servers, get the list of Forge mods installed
|
|
let mut forge_mods: std::vec::Vec<crate::protocol::forge::ForgeMod> = vec![];
|
|
let mut fml_network_version: Option<i64> = None;
|
|
if let Some(modinfo) = val.get("modinfo") {
|
|
if let Some(modinfo_type) = modinfo.get("type") {
|
|
if modinfo_type == "FML" {
|
|
if let Some(modlist) = modinfo.get("modList") {
|
|
if let Value::Array(items) = modlist {
|
|
for item in items {
|
|
if let Value::Object(obj) = item {
|
|
let modid =
|
|
obj.get("modid").unwrap().as_str().unwrap().to_string();
|
|
let version =
|
|
obj.get("version").unwrap().as_str().unwrap().to_string();
|
|
|
|
forge_mods
|
|
.push(crate::protocol::forge::ForgeMod { modid, version });
|
|
}
|
|
}
|
|
fml_network_version = Some(1);
|
|
}
|
|
}
|
|
} else {
|
|
warn!(
|
|
"Unrecognized modinfo type in server ping response: {} in {}",
|
|
modinfo_type, modinfo
|
|
);
|
|
}
|
|
}
|
|
}
|
|
// Forge 1.13+ TODO: update for 1.14+ and test
|
|
if let Some(forge_data) = val.get("forgeData") {
|
|
if let Some(mods) = forge_data.get("mods") {
|
|
if let Value::Array(items) = mods {
|
|
for item in items {
|
|
if let Value::Object(obj) = item {
|
|
let modid = obj.get("modId").unwrap().as_str().unwrap().to_string();
|
|
let modmarker =
|
|
obj.get("modmarker").unwrap().as_str().unwrap().to_string();
|
|
|
|
let version = modmarker;
|
|
|
|
forge_mods.push(crate::protocol::forge::ForgeMod { modid, version });
|
|
}
|
|
}
|
|
}
|
|
}
|
|
fml_network_version = Some(
|
|
forge_data
|
|
.get("fmlNetworkVersion")
|
|
.unwrap()
|
|
.as_i64()
|
|
.unwrap(),
|
|
);
|
|
}
|
|
|
|
Ok((
|
|
Status {
|
|
version: StatusVersion {
|
|
name: version
|
|
.get("name")
|
|
.and_then(Value::as_str)
|
|
.ok_or_else(invalid_status)?
|
|
.to_owned(),
|
|
protocol: version
|
|
.get("protocol")
|
|
.and_then(Value::as_i64)
|
|
.ok_or_else(invalid_status)? as i32,
|
|
},
|
|
players: StatusPlayers {
|
|
max: players
|
|
.get("max")
|
|
.and_then(Value::as_i64)
|
|
.ok_or_else(invalid_status)? as i32,
|
|
online: players
|
|
.get("online")
|
|
.and_then(Value::as_i64)
|
|
.ok_or_else(invalid_status)? as i32,
|
|
sample: Vec::new(), /* TODO */
|
|
},
|
|
description: format::Component::from_value(
|
|
val.get("description").ok_or_else(invalid_status)?,
|
|
),
|
|
favicon: val
|
|
.get("favicon")
|
|
.and_then(Value::as_str)
|
|
.map(|v| v.to_owned()),
|
|
forge_mods,
|
|
fml_network_version,
|
|
},
|
|
ping,
|
|
))
|
|
}
|
|
}
|
|
|
|
/// Parse a clientbound packet, for debugging packet parsing issues (Conn::read_packet)
|
|
pub fn try_parse_packet(ibuf: Vec<u8>, protocol_version: i32) {
|
|
println!("trying to parse packet data {:?}", ibuf);
|
|
|
|
let mut buf = io::Cursor::new(ibuf);
|
|
|
|
let id = VarInt::read_from(&mut buf).unwrap().0;
|
|
let dir = Direction::Clientbound;
|
|
let state = State::Play; // TODO: allow parsing other states
|
|
|
|
println!(
|
|
"about to parse id={:x}, dir={:?} state={:?}",
|
|
id, dir, state
|
|
);
|
|
|
|
let packet = packet::packet_by_id(protocol_version, state, dir, id, &mut buf).unwrap();
|
|
|
|
println!("packet = {:?}", packet);
|
|
|
|
match packet {
|
|
Some(_val) => {
|
|
let pos = buf.position() as usize;
|
|
let ibuf = buf.into_inner();
|
|
if ibuf.len() != pos {
|
|
println!("pos = {:?}", pos);
|
|
println!("ibuf = {:?}", ibuf);
|
|
println!(
|
|
"Failed to read all of packet 0x{:X}, \
|
|
had {} bytes left",
|
|
id,
|
|
ibuf.len() - pos
|
|
)
|
|
}
|
|
}
|
|
None => println!("missing packet"),
|
|
}
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
pub struct Status {
|
|
pub version: StatusVersion,
|
|
pub players: StatusPlayers,
|
|
pub description: format::Component,
|
|
pub favicon: Option<String>,
|
|
pub forge_mods: Vec<crate::protocol::forge::ForgeMod>,
|
|
pub fml_network_version: Option<i64>,
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
pub struct StatusVersion {
|
|
pub name: String,
|
|
pub protocol: i32,
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
pub struct StatusPlayers {
|
|
pub max: i32,
|
|
pub online: i32,
|
|
pub sample: Vec<StatusPlayer>,
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
pub struct StatusPlayer {
|
|
name: String,
|
|
id: String,
|
|
}
|
|
|
|
impl Read for Conn {
|
|
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
|
|
match self.cipher.as_mut() {
|
|
Option::None => self.stream.read(buf),
|
|
Option::Some(cipher) => {
|
|
let ret = self.stream.read(buf)?;
|
|
cipher.decrypt(&mut buf[..ret]);
|
|
|
|
Ok(ret)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Write for Conn {
|
|
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
|
|
match self.cipher.as_mut() {
|
|
Option::None => self.stream.write(buf),
|
|
Option::Some(cipher) => {
|
|
let mut data = vec![0; buf.len()];
|
|
data[..buf.len()].clone_from_slice(&buf[..]);
|
|
|
|
cipher.encrypt(&mut data);
|
|
|
|
self.stream.write_all(&data)?;
|
|
Ok(buf.len())
|
|
}
|
|
}
|
|
}
|
|
|
|
fn flush(&mut self) -> io::Result<()> {
|
|
self.stream.flush()
|
|
}
|
|
}
|
|
|
|
impl Clone for Conn {
|
|
fn clone(&self) -> Self {
|
|
Conn {
|
|
stream: self.stream.try_clone().unwrap(),
|
|
host: self.host.clone(),
|
|
port: self.port,
|
|
direction: self.direction,
|
|
state: self.state,
|
|
protocol_version: self.protocol_version,
|
|
cipher: Option::None,
|
|
compression_threshold: self.compression_threshold,
|
|
}
|
|
}
|
|
}
|
|
|
|
pub trait PacketType {
|
|
fn packet_id(&self, protocol_version: i32) -> i32;
|
|
|
|
fn write<W: io::Write>(&self, buf: &mut W) -> Result<(), Error>;
|
|
}
|