//! as ChannelsManagers and ChannelMonitors.
use prelude::*;
-use std::io::{Read, Write};
+use io::{self, Read, Write};
+use io_extras::{copy, sink};
use core::hash::Hash;
use sync::Mutex;
use core::cmp;
use bitcoin::hashes::sha256d::Hash as Sha256dHash;
use bitcoin::hash_types::{Txid, BlockHash};
use core::marker::Sized;
+use core::time::Duration;
use ln::msgs::DecodeError;
use ln::{PaymentPreimage, PaymentHash, PaymentSecret};
/// serialization buffer size
pub const MAX_BUF_SIZE: usize = 64 * 1024;
-/// A trait that is similar to std::io::Write but has one extra function which can be used to size
-/// buffers being written into.
-/// An impl is provided for any type that also impls std::io::Write which simply ignores size
-/// hints.
+/// A simplified version of std::io::Write that exists largely for backwards compatibility.
+/// An impl is provided for any type that also impls std::io::Write.
///
/// (C-not exported) as we only export serialization to/from byte arrays instead
pub trait Writer {
/// Writes the given buf out. See std::io::Write::write_all for more
- fn write_all(&mut self, buf: &[u8]) -> Result<(), ::std::io::Error>;
- /// Hints that data of the given size is about the be written. This may not always be called
- /// prior to data being written and may be safely ignored.
- fn size_hint(&mut self, size: usize);
+ fn write_all(&mut self, buf: &[u8]) -> Result<(), io::Error>;
}
impl<W: Write> Writer for W {
#[inline]
- fn write_all(&mut self, buf: &[u8]) -> Result<(), ::std::io::Error> {
- <Self as ::std::io::Write>::write_all(self, buf)
+ fn write_all(&mut self, buf: &[u8]) -> Result<(), io::Error> {
+ <Self as io::Write>::write_all(self, buf)
}
- #[inline]
- fn size_hint(&mut self, _size: usize) { }
}
pub(crate) struct WriterWriteAdaptor<'a, W: Writer + 'a>(pub &'a mut W);
impl<'a, W: Writer + 'a> Write for WriterWriteAdaptor<'a, W> {
#[inline]
- fn write_all(&mut self, buf: &[u8]) -> Result<(), ::std::io::Error> {
+ fn write_all(&mut self, buf: &[u8]) -> Result<(), io::Error> {
self.0.write_all(buf)
}
#[inline]
- fn write(&mut self, buf: &[u8]) -> Result<usize, ::std::io::Error> {
+ fn write(&mut self, buf: &[u8]) -> Result<usize, io::Error> {
self.0.write_all(buf)?;
Ok(buf.len())
}
#[inline]
- fn flush(&mut self) -> Result<(), ::std::io::Error> {
+ fn flush(&mut self) -> Result<(), io::Error> {
Ok(())
}
}
pub(crate) struct VecWriter(pub Vec<u8>);
impl Writer for VecWriter {
#[inline]
- fn write_all(&mut self, buf: &[u8]) -> Result<(), ::std::io::Error> {
+ fn write_all(&mut self, buf: &[u8]) -> Result<(), io::Error> {
self.0.extend_from_slice(buf);
Ok(())
}
- #[inline]
- fn size_hint(&mut self, size: usize) {
- self.0.reserve_exact(size);
- }
}
/// Writer that only tracks the amount of data written - useful if you need to calculate the length
pub(crate) struct LengthCalculatingWriter(pub usize);
impl Writer for LengthCalculatingWriter {
#[inline]
- fn write_all(&mut self, buf: &[u8]) -> Result<(), ::std::io::Error> {
+ fn write_all(&mut self, buf: &[u8]) -> Result<(), io::Error> {
self.0 += buf.len();
Ok(())
}
- #[inline]
- fn size_hint(&mut self, _size: usize) {}
}
/// Essentially std::io::Take but a bit simpler and with a method to walk the underlying stream
#[inline]
pub fn eat_remaining(&mut self) -> Result<(), DecodeError> {
- ::std::io::copy(self, &mut ::std::io::sink()).unwrap();
+ copy(self, &mut sink()).unwrap();
if self.bytes_read != self.total_bytes {
Err(DecodeError::ShortRead)
} else {
}
impl<R: Read> Read for FixedLengthReader<R> {
#[inline]
- fn read(&mut self, dest: &mut [u8]) -> Result<usize, ::std::io::Error> {
+ fn read(&mut self, dest: &mut [u8]) -> Result<usize, io::Error> {
if self.total_bytes == self.bytes_read {
Ok(0)
} else {
}
impl<R: Read> Read for ReadTrackingReader<R> {
#[inline]
- fn read(&mut self, dest: &mut [u8]) -> Result<usize, ::std::io::Error> {
+ fn read(&mut self, dest: &mut [u8]) -> Result<usize, io::Error> {
match self.read.read(dest) {
Ok(0) => Ok(0),
Ok(len) => {
/// (C-not exported) as we only export serialization to/from byte arrays instead
pub trait Writeable {
/// Writes self out to the given Writer
- fn write<W: Writer>(&self, writer: &mut W) -> Result<(), ::std::io::Error>;
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error>;
/// Writes self out to a Vec<u8>
fn encode(&self) -> Vec<u8> {
}
/// Writes self out to a Vec<u8>
+ #[cfg(test)]
fn encode_with_len(&self) -> Vec<u8> {
let mut msg = VecWriter(Vec::new());
0u16.write(&mut msg).unwrap();
}
impl<'a, T: Writeable> Writeable for &'a T {
- fn write<W: Writer>(&self, writer: &mut W) -> Result<(), ::std::io::Error> { (*self).write(writer) }
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> { (*self).write(writer) }
}
/// A trait that various rust-lightning types implement allowing them to be read in from a Read
fn read<R: Read>(reader: &mut R) -> Result<Option<Self>, DecodeError>;
}
+impl<T: Readable> MaybeReadable for T {
+ #[inline]
+ fn read<R: Read>(reader: &mut R) -> Result<Option<T>, DecodeError> {
+ Ok(Some(Readable::read(reader)?))
+ }
+}
+
pub(crate) struct OptionDeserWrapper<T: Readable>(pub Option<T>);
impl<T: Readable> Readable for OptionDeserWrapper<T> {
#[inline]
pub(crate) struct VecWriteWrapper<'a, T: Writeable>(pub &'a Vec<T>);
impl<'a, T: Writeable> Writeable for VecWriteWrapper<'a, T> {
#[inline]
- fn write<W: Writer>(&self, writer: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
for ref v in self.0.iter() {
v.write(writer)?;
}
}
/// Wrapper to read elements from a given stream until it reaches the end of the stream.
-pub(crate) struct VecReadWrapper<T: Readable>(pub Vec<T>);
-impl<T: Readable> Readable for VecReadWrapper<T> {
+pub(crate) struct VecReadWrapper<T>(pub Vec<T>);
+impl<T: MaybeReadable> Readable for VecReadWrapper<T> {
#[inline]
fn read<R: Read>(mut reader: &mut R) -> Result<Self, DecodeError> {
let mut values = Vec::new();
loop {
let mut track_read = ReadTrackingReader::new(&mut reader);
- match Readable::read(&mut track_read) {
- Ok(v) => { values.push(v); },
+ match MaybeReadable::read(&mut track_read) {
+ Ok(Some(v)) => { values.push(v); },
+ Ok(None) => { },
// If we failed to read any bytes at all, we reached the end of our TLV
// stream and have simply exhausted all entries.
Err(ref e) if e == &DecodeError::ShortRead && !track_read.have_read => break,
pub(crate) struct U48(pub u64);
impl Writeable for U48 {
#[inline]
- fn write<W: Writer>(&self, writer: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
writer.write_all(&be48_to_array(self.0))
}
}
pub(crate) struct BigSize(pub u64);
impl Writeable for BigSize {
#[inline]
- fn write<W: Writer>(&self, writer: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
match self.0 {
0...0xFC => {
(self.0 as u8).write(writer)
($val_type:ty, $len: expr) => {
impl Writeable for $val_type {
#[inline]
- fn write<W: Writer>(&self, writer: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
writer.write_all(&self.to_be_bytes())
}
}
impl Writeable for HighZeroBytesDroppedVarInt<$val_type> {
#[inline]
- fn write<W: Writer>(&self, writer: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
// Skip any full leading 0 bytes when writing (in BE):
writer.write_all(&self.0.to_be_bytes()[(self.0.leading_zeros()/8) as usize..$len])
}
impl Writeable for u8 {
#[inline]
- fn write<W: Writer>(&self, writer: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
writer.write_all(&[*self])
}
}
impl Writeable for bool {
#[inline]
- fn write<W: Writer>(&self, writer: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
writer.write_all(&[if *self {1} else {0}])
}
}
impl Writeable for [u8; $size]
{
#[inline]
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
w.write_all(self)
}
}
);
}
-//TODO: performance issue with [u8; size] with impl_array!()
impl_array!(3); // for rgb
impl_array!(4); // for IPv4
-impl_array!(10); // for OnionV2
+impl_array!(12); // for OnionV2
impl_array!(16); // for IPv6
impl_array!(32); // for channel id & hmac
impl_array!(PUBLIC_KEY_SIZE); // for PublicKey
V: Writeable
{
#[inline]
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
(self.len() as u16).write(w)?;
for (key, value) in self.iter() {
key.write(w)?;
impl<K, V> Readable for HashMap<K, V>
where K: Readable + Eq + Hash,
- V: Readable
+ V: MaybeReadable
{
#[inline]
fn read<R: Read>(r: &mut 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)?);
+ let k = K::read(r)?;
+ let v_opt = V::read(r)?;
+ if let Some(v) = v_opt {
+ if ret.insert(k, v).is_some() {
+ return Err(DecodeError::InvalidValue);
+ }
+ }
+ }
+ Ok(ret)
+ }
+}
+
+// HashSet
+impl<T> Writeable for HashSet<T>
+where T: Writeable + Eq + Hash
+{
+ #[inline]
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
+ (self.len() as u16).write(w)?;
+ for item in self.iter() {
+ item.write(w)?;
+ }
+ Ok(())
+ }
+}
+
+impl<T> Readable for HashSet<T>
+where T: Readable + Eq + Hash
+{
+ #[inline]
+ fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
+ let len: u16 = Readable::read(r)?;
+ let mut ret = HashSet::with_capacity(len as usize);
+ for _ in 0..len {
+ if !ret.insert(T::read(r)?) {
+ return Err(DecodeError::InvalidValue)
+ }
}
Ok(ret)
}
// Vectors
impl Writeable for Vec<u8> {
#[inline]
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
(self.len() as u16).write(w)?;
w.write_all(&self)
}
}
impl Writeable for Vec<Signature> {
#[inline]
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
(self.len() as u16).write(w)?;
for e in self.iter() {
e.write(w)?;
return Err(DecodeError::BadLengthDescriptor);
}
let mut ret = Vec::with_capacity(len as usize);
- for _ in 0..len { ret.push(Signature::read(r)?); }
+ for _ in 0..len { ret.push(Readable::read(r)?); }
Ok(ret)
}
}
impl Writeable for Script {
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
(self.len() as u16).write(w)?;
w.write_all(self.as_bytes())
}
}
impl Writeable for PublicKey {
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
self.serialize().write(w)
}
#[inline]
}
impl Writeable for SecretKey {
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
let mut ser = [0; SECRET_KEY_SIZE];
ser.copy_from_slice(&self[..]);
ser.write(w)
}
impl Writeable for Sha256dHash {
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
w.write_all(&self[..])
}
}
}
impl Writeable for Signature {
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
self.serialize_compact().write(w)
}
#[inline]
}
impl Writeable for PaymentPreimage {
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
self.0.write(w)
}
}
}
impl Writeable for PaymentHash {
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
self.0.write(w)
}
}
}
impl Writeable for PaymentSecret {
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
self.0.write(w)
}
}
}
impl<T: Writeable> Writeable for Box<T> {
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
T::write(&**self, w)
}
}
}
impl<T: Writeable> Writeable for Option<T> {
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
match *self {
None => 0u8.write(w)?,
Some(ref data) => {
impl<T: Readable> Readable for Option<T>
{
fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
- match BigSize::read(r)?.0 {
+ let len: BigSize = Readable::read(r)?;
+ match len.0 {
0 => Ok(None),
len => {
let mut reader = FixedLengthReader::new(r, len - 1);
}
impl Writeable for Txid {
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
w.write_all(&self[..])
}
}
}
impl Writeable for BlockHash {
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
w.write_all(&self[..])
}
}
}
impl Writeable for OutPoint {
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
self.txid.write(w)?;
self.vout.write(w)?;
Ok(())
macro_rules! impl_consensus_ser {
($bitcoin_type: ty) => {
impl Writeable for $bitcoin_type {
- fn write<W: Writer>(&self, writer: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
match self.consensus_encode(WriterWriteAdaptor(writer)) {
Ok(_) => Ok(()),
Err(e) => Err(e),
fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
match consensus::encode::Decodable::consensus_decode(r) {
Ok(t) => Ok(t),
- Err(consensus::encode::Error::Io(ref e)) if e.kind() == ::std::io::ErrorKind::UnexpectedEof => Err(DecodeError::ShortRead),
+ Err(consensus::encode::Error::Io(ref e)) if e.kind() == io::ErrorKind::UnexpectedEof => Err(DecodeError::ShortRead),
Err(consensus::encode::Error::Io(e)) => Err(DecodeError::Io(e.kind())),
Err(_) => Err(DecodeError::InvalidValue),
}
}
}
impl<T: Writeable> Writeable for Mutex<T> {
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
self.lock().unwrap().write(w)
}
}
}
}
impl<A: Writeable, B: Writeable> Writeable for (A, B) {
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
self.0.write(w)?;
self.1.write(w)
}
}
}
impl<A: Writeable, B: Writeable, C: Writeable> Writeable for (A, B, C) {
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
self.0.write(w)?;
self.1.write(w)?;
self.2.write(w)
}
}
+
+impl Writeable for () {
+ fn write<W: Writer>(&self, _: &mut W) -> Result<(), io::Error> {
+ Ok(())
+ }
+}
+impl Readable for () {
+ fn read<R: Read>(_r: &mut R) -> Result<Self, DecodeError> {
+ Ok(())
+ }
+}
+
+impl Writeable for String {
+ #[inline]
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
+ (self.len() as u16).write(w)?;
+ w.write_all(self.as_bytes())
+ }
+}
+impl Readable for String {
+ #[inline]
+ fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
+ let v: Vec<u8> = Readable::read(r)?;
+ let ret = String::from_utf8(v).map_err(|_| DecodeError::InvalidValue)?;
+ Ok(ret)
+ }
+}
+
+impl Writeable for Duration {
+ #[inline]
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
+ self.as_secs().write(w)?;
+ self.subsec_nanos().write(w)
+ }
+}
+impl Readable for Duration {
+ #[inline]
+ fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
+ let secs = Readable::read(r)?;
+ let nanos = Readable::read(r)?;
+ Ok(Duration::new(secs, nanos))
+ }
+}
projects / rust-lightning / blobdiff