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#![allow(non_camel_case_types)] use ::{AnyBoxedSerialize, BareDeserialize, BareSerialize, BoxedDeserialize, BoxedSerialize, ConstructorNumber, Deserializer, Result, Serializer}; use byteorder::{LittleEndian, ReadBytesExt, WriteBytesExt}; use extfmt::Hexlify; use rand::{Rand, Rng}; use serde; use std::fmt; use std::io::{Read, Write}; use std::marker::PhantomData; const MAX_BYTES_DEBUG_LEN: usize = 4; macro_rules! impl_byteslike { (@common $ty:ident) => { impl fmt::Debug for $ty { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { if self.len() <= MAX_BYTES_DEBUG_LEN { write!(f, "<{}>", Hexlify(&self.0)) } else { write!(f, "<{}... {} bytes>", Hexlify(&self.0[..MAX_BYTES_DEBUG_LEN]), self.0.len()) } } } impl ::std::ops::Deref for $ty { type Target = [u8]; fn deref(&self) -> &[u8] { &self.0 } } impl ::std::ops::DerefMut for $ty { fn deref_mut(&mut self) -> &mut [u8] { &mut self.0 } } impl serde::Serialize for $ty { fn serialize<S>(&self, serializer: S) -> ::std::result::Result<S::Ok, S::Error> where S: serde::Serializer, { serializer.serialize_bytes(&self.0) } } }; (@arraylike $ty:ident) => { impl_byteslike!(@common $ty); impl Rand for $ty { fn rand<R: Rng>(rng: &mut R) -> Self { let mut ret: Self = Default::default(); rng.fill_bytes(&mut ret.0); ret } } impl BareDeserialize for $ty { fn deserialize_bare(de: &mut Deserializer) -> Result<Self> { let mut ret: Self = Default::default(); de.read(&mut ret.0)?; Ok(ret) } } impl BareSerialize for $ty { fn serialize_bare(&self, ser: &mut Serializer) -> Result<()> { ser.write(&self.0)?; Ok(()) } } }; } #[derive(Clone, PartialEq, Eq, PartialOrd, Ord)] pub struct bytes(pub Vec<u8>); impl BareDeserialize for bytes { fn deserialize_bare(de: &mut Deserializer) -> Result<Self> { let vec = de.read_bare::<Vec<u8>>()?; Ok(bytes(vec)) } } impl BareSerialize for bytes { fn serialize_bare(&self, ser: &mut Serializer) -> Result<()> { ser.write_bare::<[u8]>(&self.0) } } impl From<Vec<u8>> for bytes { fn from(v: Vec<u8>) -> Self { bytes(v) } } #[derive(Clone, Copy, Default, PartialEq, Eq, PartialOrd, Ord)] pub struct int128(pub [u8; 16]); #[derive(Clone, Copy, Default, PartialEq, Eq, PartialOrd, Ord)] pub struct int256(pub [u8; 32]); impl_byteslike!(@common bytes); impl_byteslike!(@arraylike int128); impl_byteslike!(@arraylike int256); pub struct TLObject(Box<AnyBoxedSerialize>); impl TLObject { pub fn new<I: AnyBoxedSerialize>(inner: I) -> Self { TLObject(Box::new(inner)) } pub fn downcast<I: AnyBoxedSerialize>(self) -> ::std::result::Result<I, Self> { if self.0.as_any().is::<I>() { Ok(*self.0.into_boxed_any().downcast::<I>().unwrap()) } else { Err(self) } } } impl Clone for TLObject { fn clone(&self) -> Self { unimplemented!() } } impl fmt::Debug for TLObject { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { let (type_id, _) = self.0.serialize_boxed(); write!(f, "(TLObject tl_id:{:?})", type_id) } } impl BoxedDeserialize for TLObject { fn possible_constructors() -> Vec<ConstructorNumber> { ::mtproto::DYNAMIC_DESERIALIZERS.keys().cloned().collect() } fn deserialize_boxed(id: ConstructorNumber, de: &mut Deserializer) -> Result<Self> { match ::mtproto::DYNAMIC_DESERIALIZERS.get(&id) { Some(f) => f(id, de), None => _invalid_id!(id), } } } impl BoxedSerialize for TLObject { fn serialize_boxed<'this>(&'this self) -> (ConstructorNumber, &'this BareSerialize) { self.0.serialize_boxed() } } impl serde::Serialize for TLObject { fn serialize<S>(&self, serializer: S) -> ::std::result::Result<S::Ok, S::Error> where S: serde::Serializer, { serde::Serialize::serialize(&self.0, serializer) } } #[derive(Debug, Clone)] pub struct LengthPrefixed<T>(pub T); impl<T> From<T> for LengthPrefixed<T> { fn from(x: T) -> Self { LengthPrefixed(x) } } impl<T> BareDeserialize for LengthPrefixed<T> where T: BoxedDeserialize, { fn deserialize_bare(de: &mut Deserializer) -> Result<Self> { let len = de.read_i32::<LittleEndian>()? as usize; let mut buf = vec![0u8; len]; de.read_exact(&mut buf)?; Ok(LengthPrefixed(T::boxed_deserialized_from_bytes(&buf)?)) } } impl<T> BareSerialize for LengthPrefixed<T> where T: BoxedSerialize, { fn serialize_bare(&self, ser: &mut Serializer) -> Result<()> { let inner = self.0.boxed_serialized_bytes()?; ser.write_i32::<LittleEndian>(inner.len() as i32)?; ser.write(&inner)?; Ok(()) } } impl<T> serde::Serialize for LengthPrefixed<T> where T: serde::Serialize, { fn serialize<S>(&self, serializer: S) -> ::std::result::Result<S::Ok, S::Error> where S: serde::Serializer, { serde::Serialize::serialize(&self.0, serializer) } } impl BareSerialize for () { fn serialize_bare(&self, _ser: &mut Serializer) -> Result<()> { Ok(()) } } impl BoxedDeserialize for bool { fn possible_constructors() -> Vec<ConstructorNumber> { ::mtproto::Bool::possible_constructors() } fn deserialize_boxed(id: ConstructorNumber, de: &mut Deserializer) -> Result<Self> { use mtproto::Bool; Ok(match Bool::deserialize_boxed(id, de)? { Bool::True => true, Bool::False => false, }) } } impl BoxedSerialize for bool { fn serialize_boxed<'this>(&'this self) -> (ConstructorNumber, &'this BareSerialize) { use mtproto::Bool; Bool::serialize_boxed(if *self { &Bool::True } else { &Bool::False }) } } impl BareDeserialize for String { fn deserialize_bare(de: &mut Deserializer) -> Result<Self> { let vec = de.read_bare::<Vec<u8>>()?; Ok(String::from_utf8(vec)?) } } impl BareSerialize for String { fn serialize_bare(&self, ser: &mut Serializer) -> Result<()> { ser.write_bare::<[u8]>(self.as_bytes())?; Ok(()) } } impl<T> BoxedDeserialize for Box<T> where T: BoxedDeserialize, { fn possible_constructors() -> Vec<ConstructorNumber> { T::possible_constructors() } fn deserialize_boxed(id: ConstructorNumber, de: &mut Deserializer) -> Result<Self> { Ok(Box::new(T::deserialize_boxed(id, de)?)) } } impl<T> BoxedSerialize for Box<T> where T: BoxedSerialize, { fn serialize_boxed<'this>(&'this self) -> (ConstructorNumber, &'this BareSerialize) { T::serialize_boxed(self) } } pub enum Bare {} pub enum Boxed {} pub struct Vector<Det, T>(pub Vec<T>, PhantomData<fn() -> Det>); pub type vector<Det, T> = Vector<Det, T>; impl<Det, T> Clone for Vector<Det, T> where T: Clone, { fn clone(&self) -> Self { Vector(self.0.clone(), PhantomData) } } impl<Det, T> fmt::Debug for Vector<Det, T> where T: fmt::Debug, { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { write!(f, "Vector({:?})", self.0) } } impl<Det, T> serde::Serialize for Vector<Det, T> where T: serde::Serialize, { fn serialize<S>(&self, serializer: S) -> ::std::result::Result<S::Ok, S::Error> where S: serde::Serializer, { use serde::ser::SerializeSeq; let mut seq = serializer.serialize_seq(Some(self.0.len()))?; for item in &self.0 { seq.serialize_element(item)?; } seq.end() } } const VECTOR_CONSTRUCTOR: ConstructorNumber = ConstructorNumber(0x1cb5c415); macro_rules! impl_vector { ($det:ident, $det_de:ident, $det_ser:ident, $read_method:ident, $write_method:ident) => { impl<T> From<Vec<T>> for Vector<$det, T> { fn from(obj: Vec<T>) -> Self { Vector(obj, PhantomData) } } impl<T> ::std::ops::Deref for Vector<$det, T> { type Target = [T]; fn deref(&self) -> &[T] { &self.0 } } impl<T> ::std::ops::DerefMut for Vector<$det, T> { fn deref_mut(&mut self) -> &mut [T] { &mut self.0 } } impl<T> BareDeserialize for Vector<$det, T> where T: $det_de, { fn deserialize_bare(de: &mut Deserializer) -> Result<Self> { let count = de.read_i32::<LittleEndian>()?; let mut ret = Vec::with_capacity(count as usize); for _ in 0..count { ret.push(de.$read_method()?); } Ok(ret.into()) } } impl<T> BoxedDeserialize for Vector<$det, T> where Self: BareDeserialize, { fn possible_constructors() -> Vec<ConstructorNumber> { vec![VECTOR_CONSTRUCTOR] } fn deserialize_boxed(id: ConstructorNumber, de: &mut Deserializer) -> Result<Self> { assert_eq!(id, VECTOR_CONSTRUCTOR); Self::deserialize_bare(de) } } impl<T> BareSerialize for Vector<$det, T> where T: $det_ser, { fn serialize_bare(&self, ser: &mut Serializer) -> Result<()> { ser.write_i32::<LittleEndian>(self.0.len() as i32)?; for item in &self.0 { ser.$write_method(item)?; } Ok(()) } } impl<T> BoxedSerialize for Vector<$det, T> where Self: BareSerialize, { fn serialize_boxed<'this>(&'this self) -> (ConstructorNumber, &'this BareSerialize) { (VECTOR_CONSTRUCTOR, self) } } } } impl_vector! { Bare, BareDeserialize, BareSerialize, read_bare, write_bare } impl_vector! { Boxed, BoxedDeserialize, BoxedSerialize, read_boxed, write_boxed } impl BareDeserialize for Vec<u8> { fn deserialize_bare(de: &mut Deserializer) -> Result<Self> { let len = de.read_u8()?; let (len, mut have_read) = if len != 254 { (len as usize, 1) } else { (de.read_u24::<LittleEndian>()? as usize, 4) }; let mut buf = vec![0; len]; de.read_exact(&mut buf)?; have_read += len; let remainder = have_read % 4; if remainder != 0 { let mut buf = [0u8; 4]; de.read_exact(&mut buf[..4 - remainder])?; } Ok(buf) } } impl BareSerialize for [u8] { fn serialize_bare(&self, ser: &mut Serializer) -> Result<()> { let len = self.len(); let mut have_written = if len < 254 { ser.write_u8(len as u8)?; 1 } else { ser.write_u8(254)?; ser.write_u24::<LittleEndian>(len as u32)?; 4 }; ser.write_all(self)?; have_written += len; let remainder = have_written % 4; if remainder != 0 { let buf = [0u8; 4]; ser.write_all(&buf[..4 - remainder])?; } Ok(()) } } macro_rules! impl_tl_primitive { ($tltype:ident, $ptype:ident, $read:ident, $write:ident) => { pub type $tltype = $ptype; impl BareDeserialize for $ptype { fn deserialize_bare(de: &mut Deserializer) -> Result<Self> { Ok(de.$read::<LittleEndian>()?) } } impl BareSerialize for $ptype { fn serialize_bare(&self, ser: &mut Serializer) -> Result<()> { ser.$write::<LittleEndian>(*self)?; Ok(()) } } } } impl_tl_primitive! { int, i32, read_i32, write_i32 } impl_tl_primitive! { long, i64, read_i64, write_i64 } impl_tl_primitive! { double, f64, read_f64, write_f64 } pub type Flags = i32; pub type lengthPrefixedTypedObject = LengthPrefixed<TypedObject>; pub type string = String; pub type TypedObject = TLObject;