+++ /dev/null
-use std::result::Result;
-use std::io::{Read, Write};
-use std::collections::HashMap;
-use std::hash::Hash;
-use std::mem;
-
-use secp256k1::{Secp256k1, Signature};
-use secp256k1::key::PublicKey;
-use bitcoin::util::hash::Sha256dHash;
-use bitcoin::blockdata::script::Script;
-use std::marker::Sized;
-use ln::msgs::DecodeError;
-
-use util::byte_utils::{be64_to_array, be32_to_array, be16_to_array, slice_to_be16, slice_to_be32, slice_to_be64};
-
-const MAX_BUF_SIZE: usize = 16 * 1024;
-
-pub struct Writer<W> { writer: W }
-pub struct Reader<R> { reader: R }
-
-pub trait Writeable<W: Write> {
- fn write(&self, writer: &mut Writer<W>) -> Result<(), DecodeError>;
-}
-
-pub trait Readable<R>
- where Self: Sized,
- R: Read
-{
- fn read(reader: &mut Reader<R>) -> Result<Self, DecodeError>;
-}
-
-impl<W: Write> Writer<W> {
- pub fn new(writer: W) -> Writer<W> {
- return Writer { writer }
- }
- pub fn into_inner(self) -> W { self.writer }
- pub fn get_ref(&self) -> &W { &self.writer }
- fn write_u64(&mut self, v: u64) -> Result<(), DecodeError> {
- Ok(self.writer.write_all(&be64_to_array(v))?)
- }
- fn write_u32(&mut self, v: u32) -> Result<(), DecodeError> {
- Ok(self.writer.write_all(&be32_to_array(v))?)
- }
- fn write_u16(&mut self, v: u16) -> Result<(), DecodeError> {
- Ok(self.writer.write_all(&be16_to_array(v))?)
- }
- fn write_u8(&mut self, v: u8) -> Result<(), DecodeError> {
- Ok(self.writer.write_all(&[v])?)
- }
- fn write_bool(&mut self, v: bool) -> Result<(), DecodeError> {
- Ok(self.writer.write_all(&[if v {1} else {0}])?)
- }
- pub fn write_all(&mut self, v: &[u8]) -> Result<(), DecodeError> {
- Ok(self.writer.write_all(v)?)
- }
-}
-
-impl<R: Read> Reader<R> {
- pub fn new(reader: R) -> Reader<R> {
- return Reader { reader }
- }
- pub fn into_inner(self) -> R { self.reader }
- pub fn get_ref(&self) -> &R { &self.reader }
-
- fn read_u64(&mut self) -> Result<u64, DecodeError> {
- let mut buf = [0; 8];
- self.reader.read_exact(&mut buf)?;
- Ok(slice_to_be64(&buf))
- }
-
- fn read_u32(&mut self) -> Result<u32, DecodeError> {
- let mut buf = [0; 4];
- self.reader.read_exact(&mut buf)?;
- Ok(slice_to_be32(&buf))
- }
-
- fn read_u16(&mut self) -> Result<u16, DecodeError> {
- let mut buf = [0; 2];
- self.reader.read_exact(&mut buf)?;
- Ok(slice_to_be16(&buf))
- }
-
- fn read_u8(&mut self) -> Result<u8, DecodeError> {
- let mut buf = [0; 1];
- self.reader.read_exact(&mut buf)?;
- Ok(buf[0])
- }
- fn read_bool(&mut self) -> Result<bool, DecodeError> {
- let mut buf = [0; 1];
- self.reader.read_exact(&mut buf)?;
- if buf[0] != 0 && buf[0] != 1 {
- return Err(DecodeError::InvalidValue);
- }
- Ok(buf[0] == 1)
- }
- pub fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), DecodeError> {
- Ok(self.reader.read_exact(buf)?)
- }
- pub fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize, DecodeError> {
- Ok(self.reader.read_to_end(buf)?)
- }
-}
-
-macro_rules! impl_writeable_primitive {
- ($val_type:ty, $meth_write:ident, $meth_read:ident) => {
- impl<W:Write> Writeable<W> for $val_type {
- #[inline]
- fn write(&self, writer: &mut Writer<W>) -> Result<(), DecodeError> {
- writer.$meth_write(*self)
- }
- }
- impl<R:Read> Readable<R> for $val_type {
- #[inline]
- fn read(reader: &mut Reader<R>) -> Result<$val_type, DecodeError> {
- reader.$meth_read()
- }
- }
- }
-}
-
-impl_writeable_primitive!(u64, write_u64, read_u64);
-impl_writeable_primitive!(u32, write_u32, read_u32);
-impl_writeable_primitive!(u16, write_u16, read_u16);
-impl_writeable_primitive!(u8, write_u8, read_u8);
-impl_writeable_primitive!(bool, write_bool, read_bool);
-
-// u8 arrays
-macro_rules! impl_array {
- ( $size:expr ) => (
- impl<W> Writeable<W> for [u8; $size]
- where W: Write
- {
- #[inline]
- fn write(&self, w: &mut Writer<W>) -> Result<(), DecodeError> {
- w.write_all(self)?;
- Ok(())
- }
- }
-
- impl<R> Readable<R> for [u8; $size]
- where R: Read
- {
- #[inline]
- fn read(r: &mut Reader<R>) -> Result<Self, DecodeError> {
- let mut buf = [0u8; $size];
- r.read_exact(&mut buf)?;
- Ok(buf)
- }
- }
- );
-}
-
-//TODO: performance issue with [u8; size] with impl_array!()
-impl_array!(32); // for channel id & hmac
-impl_array!(33); // for PublicKey
-impl_array!(64); // for Signature
-impl_array!(1300); // for OnionPacket.hop_data
-
-// HashMap
-impl<W, K, V> Writeable<W> for HashMap<K, V>
- where W: Write,
- K: Writeable<W> + Eq + Hash,
- V: Writeable<W>
-{
- #[inline]
- fn write(&self, w: &mut Writer<W>) -> Result<(), DecodeError> {
- (self.len() as u16).write(w)?;
- for (key, value) in self.iter() {
- key.write(w)?;
- value.write(w)?;
- }
- Ok(())
- }
-}
-
-impl<R, K, V> Readable<R> for HashMap<K, V>
- where R: Read,
- K: Readable<R> + Eq + Hash,
- V: Readable<R>
-{
- #[inline]
- fn read(r: &mut Reader<R>) -> Result<Self, DecodeError> {
- let len: u16 = Readable::read(r)?;
- let mut ret = HashMap::with_capacity(len as usize);
- for _ in 0..len {
- ret.insert(K::read(r)?, V::read(r)?);
- }
- Ok(ret)
- }
-}
-
-// Vectors
-impl<W: Write, T: Writeable<W>> Writeable<W> for Vec<T> {
- #[inline]
- fn write(&self, w: &mut Writer<W>) -> Result<(), DecodeError> {
- let byte_size = (self.len() as usize)
- .checked_mul(mem::size_of::<T>())
- .ok_or(DecodeError::BadLengthDescriptor)?;
- if byte_size > MAX_BUF_SIZE {
- return Err(DecodeError::BadLengthDescriptor);
- }
- (self.len() as u16).write(w)?;
- // performance with Vec<u8>
- for e in self.iter() {
- e.write(w)?;
- }
- Ok(())
- }
-}
-
-impl<R: Read, T: Readable<R>> Readable<R> for Vec<T> {
- #[inline]
- fn read(r: &mut Reader<R>) -> Result<Self, DecodeError> {
- let len: u16 = Readable::read(r)?;
- let byte_size = (len as usize)
- .checked_mul(mem::size_of::<T>())
- .ok_or(DecodeError::BadLengthDescriptor)?;
- if byte_size > MAX_BUF_SIZE {
- return Err(DecodeError::BadLengthDescriptor);
- }
- let mut ret = Vec::with_capacity(len as usize);
- for _ in 0..len { ret.push(T::read(r)?); }
- Ok(ret)
- }
-}
-
-impl<W: Write> Writeable<W> for Script {
- fn write(&self, w: &mut Writer<W>) -> Result<(), DecodeError> {
- self.to_bytes().to_vec().write(w)
- }
-}
-
-impl<R: Read> Readable<R> for Script {
- fn read(r: &mut Reader<R>) -> Result<Self, DecodeError> {
- let len = <u16 as Readable<R>>::read(r)? as usize;
- let mut buf = vec![0; len];
- r.read_exact(&mut buf)?;
- Ok(Script::from(buf))
- }
-}
-
-impl<W: Write> Writeable<W> for Option<Script> {
- fn write(&self, w: &mut Writer<W>) -> Result<(), DecodeError> {
- if let &Some(ref script) = self {
- script.write(w)?;
- }
- Ok(())
- }
-}
-
-impl<R: Read> Readable<R> for Option<Script> {
- fn read(r: &mut Reader<R>) -> Result<Self, DecodeError> {
- match <u16 as Readable<R>>::read(r) {
- Ok(len) => {
- let mut buf = vec![0; len as usize];
- r.read_exact(&mut buf)?;
- Ok(Some(Script::from(buf)))
- },
- Err(DecodeError::ShortRead) => Ok(None),
- Err(e) => Err(e)
- }
- }
-}
-
-impl<W: Write> Writeable<W> for PublicKey {
- fn write(&self, w: &mut Writer<W>) -> Result<(), DecodeError> {
- self.serialize().write(w)
- }
-}
-
-impl<R: Read> Readable<R> for PublicKey {
- fn read(r: &mut Reader<R>) -> Result<Self, DecodeError> {
- let buf: [u8; 33] = Readable::read(r)?;
- match PublicKey::from_slice(&Secp256k1::without_caps(), &buf) {
- Ok(key) => Ok(key),
- Err(_) => return Err(DecodeError::BadPublicKey),
- }
- }
-}
-
-impl<W: Write> Writeable<W> for Sha256dHash {
- fn write(&self, w: &mut Writer<W>) -> Result<(), DecodeError> {
- self.as_bytes().write(w)
- }
-}
-
-impl<R: Read> Readable<R> for Sha256dHash {
- fn read(r: &mut Reader<R>) -> Result<Self, DecodeError> {
- let buf: [u8; 32] = Readable::read(r)?;
- Ok(From::from(&buf[..]))
- }
-}
-
-impl<W: Write> Writeable<W> for Signature {
- fn write(&self, w: &mut Writer<W>) -> Result<(), DecodeError> {
- self.serialize_compact(&Secp256k1::without_caps()).write(w)
- }
-}
-
-impl<R: Read> Readable<R> for Signature {
- fn read(r: &mut Reader<R>) -> Result<Self, DecodeError> {
- let buf: [u8; 64] = Readable::read(r)?;
- match Signature::from_compact(&Secp256k1::without_caps(), &buf) {
- Ok(sig) => Ok(sig),
- Err(_) => return Err(DecodeError::BadSignature),
- }
- }
-}
-
-macro_rules! impl_writeable {
- ($st:ident, {$($field:ident),*}) => {
- impl<W: ::std::io::Write> Writeable<W> for $st {
- fn write(&self, w: &mut Writer<W>) -> Result<(), DecodeError> {
- $( self.$field.write(w)?; )*
- Ok(())
- }
- }
-
- impl<R: ::std::io::Read> Readable<R> for $st {
- fn read(r: &mut Reader<R>) -> Result<Self, DecodeError> {
- Ok(Self {
- $($field: Readable::read(r)?),*
- })
- }
- }
- }
-}
projects / rust-lightning / blobdiff