zecfoundation
/
rust-bitcoin
mirror of https://github.com/ZcashFoundation/rust-bitcoin.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Merge pull request #265 from apoelstra/2019-05-enc-dec-cleanup 

clean up encoding/decoding traits
This commit is contained in:
Andrew Poelstra 2019-07-24 19:30:21 +00:00 committed by GitHub
parent 0fc7b28cfc 3b9a94a178
commit a041168205
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
20 changed files with 492 additions and 401 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
fuzz/fuzz_targets/deserialize_transaction.rs
View File

@ -7,12 +7,12 @@ fn do_test(data: &[u8]) {
Ok(mut tx) => { Ok(mut tx) => {
let ser = bitcoin::consensus::encode::serialize(&tx); let ser = bitcoin::consensus::encode::serialize(&tx);
assert_eq!(&ser[..], data); assert_eq!(&ser[..], data);
let len = ser.len() as u64; let len = ser.len();
let calculated_weight = tx.get_weight(); let calculated_weight = tx.get_weight();
for input in &mut tx.input { for input in &mut tx.input {
input.witness = vec![]; input.witness = vec![];
} }
let no_witness_len = bitcoin::consensus::encode::serialize(&tx).len() as u64; let no_witness_len = bitcoin::consensus::encode::serialize(&tx).len();
// For 0-input transactions, `no_witness_len` will be incorrect because // For 0-input transactions, `no_witness_len` will be incorrect because
// we serialize as segwit even after "stripping the witnesses". We need // we serialize as segwit even after "stripping the witnesses". We need
// to drop two bytes (i.e. eight weight) // to drop two bytes (i.e. eight weight)

21
src/blockdata/opcodes.rs
View File

@ -24,9 +24,6 @@
use std::fmt; use std::fmt;
use consensus::encode::{self, Decoder, Encoder};
use consensus::encode::{Decodable, Encodable};
// Note: I am deliberately not implementing PartialOrd or Ord on the // Note: I am deliberately not implementing PartialOrd or Ord on the
// opcode enum. If you want to check ranges of opcodes, etc., // opcode enum. If you want to check ranges of opcodes, etc.,
// write an #[inline] helper function which casts to u8s. // write an #[inline] helper function which casts to u8s.
@ -715,20 +712,6 @@ impl From<u8> for All {
display_from_debug!(All); display_from_debug!(All);
impl<D: Decoder> Decodable<D> for All {
#[inline]
fn consensus_decode(d: &mut D) -> Result<All, encode::Error> {
Ok(All::from(d.read_u8()?))
}
}
impl<S: Encoder> Encodable<S> for All {
#[inline]
fn consensus_encode(&self, s: &mut S) -> Result<(), encode::Error> {
s.emit_u8(self.code)
}
}
#[cfg(feature = "serde")] #[cfg(feature = "serde")]
impl serde::Serialize for All { impl serde::Serialize for All {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
@ -835,7 +818,6 @@ impl Ordinary {
mod tests { mod tests {
use std::collections::HashSet; use std::collections::HashSet;
use consensus::encode::{serialize, deserialize};
use super::*; use super::*;
macro_rules! roundtrip { macro_rules! roundtrip {
@ -847,9 +829,6 @@ mod tests {
assert_eq!(s1, s2); assert_eq!(s1, s2);
assert_eq!(s1, stringify!($op)); assert_eq!(s1, stringify!($op));
assert!($unique.insert(s1)); assert!($unique.insert(s1));
let enc = serialize(&all::$op);
assert_eq!(all::$op, deserialize(&enc).unwrap());
} }
} }

16
src/blockdata/script.rs
View File

@ -25,13 +25,12 @@
//! //!
use std::default::Default; use std::default::Default;
use std::{error, fmt}; use std::{error, fmt, io};
#[cfg(feature = "serde")] use serde; #[cfg(feature = "serde")] use serde;
use blockdata::opcodes; use blockdata::opcodes;
use consensus::encode::{Decodable, Encodable}; use consensus::{encode, Decodable, Encodable};
use consensus::encode::{self, Decoder, Encoder};
use bitcoin_hashes::{hash160, sha256, Hash}; use bitcoin_hashes::{hash160, sha256, Hash};
#[cfg(feature="bitcoinconsensus")] use bitcoinconsensus; #[cfg(feature="bitcoinconsensus")] use bitcoinconsensus;
#[cfg(feature="bitcoinconsensus")] use std::convert; #[cfg(feature="bitcoinconsensus")] use std::convert;
@ -726,16 +725,19 @@ impl serde::Serialize for Script {
} }
// Network serialization // Network serialization
impl<S: Encoder> Encodable<S> for Script { impl Encodable for Script {
#[inline] #[inline]
fn consensus_encode(&self, s: &mut S) -> Result<(), encode::Error> { fn consensus_encode<S: io::Write>(
&self,
s: S,
) -> Result<usize, encode::Error> {
self.0.consensus_encode(s) self.0.consensus_encode(s)
} }
} }
impl<D: Decoder> Decodable<D> for Script { impl Decodable for Script {
#[inline] #[inline]
fn consensus_decode(d: &mut D) -> Result<Script, encode::Error> { fn consensus_decode<D: io::Read>(d: D) -> Result<Self, encode::Error> {
Ok(Script(Decodable::consensus_decode(d)?)) Ok(Script(Decodable::consensus_decode(d)?))
} }
} }

111
src/blockdata/transaction.rs
View File

@ -25,7 +25,7 @@
use byteorder::{LittleEndian, WriteBytesExt}; use byteorder::{LittleEndian, WriteBytesExt};
use std::default::Default; use std::default::Default;
use std::fmt; use std::{fmt, io};
#[cfg(feature="bitcoinconsensus")] use std::collections::HashMap; #[cfg(feature="bitcoinconsensus")] use std::collections::HashMap;
use bitcoin_hashes::{self, sha256d, Hash}; use bitcoin_hashes::{self, sha256d, Hash};
@ -34,8 +34,8 @@ use bitcoin_hashes::hex::FromHex;
use util::hash::BitcoinHash; use util::hash::BitcoinHash;
#[cfg(feature="bitcoinconsensus")] use blockdata::script; #[cfg(feature="bitcoinconsensus")] use blockdata::script;
use blockdata::script::Script; use blockdata::script::Script;
use consensus::encode::{self, serialize, Encoder, Decoder}; use consensus::{encode, serialize, Decodable, Encodable};
use consensus::encode::{Encodable, Decodable, VarInt}; use VarInt;
/// A reference to a transaction output /// A reference to a transaction output
#[derive(Copy, Clone, Debug, Eq, Hash, PartialEq, PartialOrd, Ord)] #[derive(Copy, Clone, Debug, Eq, Hash, PartialEq, PartialOrd, Ord)]
@ -368,40 +368,40 @@ impl Transaction {
/// witness, this is the non-witness consensus-serialized size multiplied by 3 plus the /// witness, this is the non-witness consensus-serialized size multiplied by 3 plus the
/// with-witness consensus-serialized size. /// with-witness consensus-serialized size.
#[inline] #[inline]
pub fn get_weight(&self) -> u64 { pub fn get_weight(&self) -> usize {
let mut input_weight = 0; let mut input_weight = 0;
let mut inputs_with_witnesses = 0; let mut inputs_with_witnesses = 0;
for input in &self.input { for input in &self.input {
input_weight += 4*(32 + 4 + 4 + // outpoint (32+4) + nSequence input_weight += 4*(32 + 4 + 4 + // outpoint (32+4) + nSequence
VarInt(input.script_sig.len() as u64).encoded_length() + VarInt(input.script_sig.len() as u64).len() +
input.script_sig.len() as u64); input.script_sig.len());
if !input.witness.is_empty() { if !input.witness.is_empty() {
inputs_with_witnesses += 1; inputs_with_witnesses += 1;
input_weight += VarInt(input.witness.len() as u64).encoded_length(); input_weight += VarInt(input.witness.len() as u64).len();
for elem in &input.witness { for elem in &input.witness {
input_weight += VarInt(elem.len() as u64).encoded_length() + elem.len() as u64; input_weight += VarInt(elem.len() as u64).len() + elem.len();
} }
} }
} }
let mut output_size = 0; let mut output_size = 0;
for output in &self.output { for output in &self.output {
output_size += 8 + // value output_size += 8 + // value
VarInt(output.script_pubkey.len() as u64).encoded_length() + VarInt(output.script_pubkey.len() as u64).len() +
output.script_pubkey.len() as u64; output.script_pubkey.len();
} }
let non_input_size = let non_input_size =
// version: // version:
4 + 4 +
// count varints: // count varints:
VarInt(self.input.len() as u64).encoded_length() + VarInt(self.input.len() as u64).len() +
VarInt(self.output.len() as u64).encoded_length() + VarInt(self.output.len() as u64).len() +
output_size + output_size +
// lock_time // lock_time
4; 4;
if inputs_with_witnesses == 0 { if inputs_with_witnesses == 0 {
non_input_size * 4 + input_weight non_input_size * 4 + input_weight
} else { } else {
non_input_size * 4 + input_weight + self.input.len() as u64 - inputs_with_witnesses + 2 non_input_size * 4 + input_weight + self.input.len() - inputs_with_witnesses + 2
} }
} }
@ -439,42 +439,54 @@ impl BitcoinHash for Transaction {
impl_consensus_encoding!(TxOut, value, script_pubkey); impl_consensus_encoding!(TxOut, value, script_pubkey);
impl<S: Encoder> Encodable<S> for OutPoint { impl Encodable for OutPoint {
fn consensus_encode(&self, s: &mut S) -> Result <(), encode::Error> { fn consensus_encode<S: io::Write>(
self.txid.consensus_encode(s)?; &self,
self.vout.consensus_encode(s) mut s: S,
) -> Result<usize, encode::Error> {
let len = self.txid.consensus_encode(&mut s)?;
Ok(len + self.vout.consensus_encode(s)?)
} }
} }
impl<D: Decoder> Decodable<D> for OutPoint { impl Decodable for OutPoint {
fn consensus_decode(d: &mut D) -> Result<OutPoint, encode::Error> { fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, encode::Error> {
Ok(OutPoint { Ok(OutPoint {
txid: Decodable::consensus_decode(d)?, txid: Decodable::consensus_decode(&mut d)?,
vout: Decodable::consensus_decode(d)?, vout: Decodable::consensus_decode(d)?,
}) })
} }
} }
impl<S: Encoder> Encodable<S> for TxIn { impl Encodable for TxIn {
fn consensus_encode(&self, s: &mut S) -> Result <(), encode::Error> { fn consensus_encode<S: io::Write>(
self.previous_output.consensus_encode(s)?; &self,
self.script_sig.consensus_encode(s)?; mut s: S,
self.sequence.consensus_encode(s) ) -> Result<usize, encode::Error> {
let mut len = 0;
len += self.previous_output.consensus_encode(&mut s)?;
len += self.script_sig.consensus_encode(&mut s)?;
len += self.sequence.consensus_encode(s)?;
Ok(len)
} }
} }
impl<D: Decoder> Decodable<D> for TxIn { impl Decodable for TxIn {
fn consensus_decode(d: &mut D) -> Result<TxIn, encode::Error> { fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, encode::Error> {
Ok(TxIn { Ok(TxIn {
previous_output: Decodable::consensus_decode(d)?, previous_output: Decodable::consensus_decode(&mut d)?,
script_sig: Decodable::consensus_decode(d)?, script_sig: Decodable::consensus_decode(&mut d)?,
sequence: Decodable::consensus_decode(d)?, sequence: Decodable::consensus_decode(d)?,
witness: vec![], witness: vec![],
}) })
} }
} }
impl<S: Encoder> Encodable<S> for Transaction { impl Encodable for Transaction {
fn consensus_encode(&self, s: &mut S) -> Result <(), encode::Error> { fn consensus_encode<S: io::Write>(
self.version.consensus_encode(s)?; &self,
mut s: S,
) -> Result<usize, encode::Error> {
let mut len = 0;
len += self.version.consensus_encode(&mut s)?;
let mut have_witness = self.input.is_empty(); let mut have_witness = self.input.is_empty();
for input in &self.input { for input in &self.input {
if !input.witness.is_empty() { if !input.witness.is_empty() {
@ -483,35 +495,36 @@ impl<S: Encoder> Encodable<S> for Transaction {
} }
} }
if !have_witness { if !have_witness {
self.input.consensus_encode(s)?; len += self.input.consensus_encode(&mut s)?;
self.output.consensus_encode(s)?; len += self.output.consensus_encode(&mut s)?;
} else { } else {
0u8.consensus_encode(s)?; len += 0u8.consensus_encode(&mut s)?;
1u8.consensus_encode(s)?; len += 1u8.consensus_encode(&mut s)?;
self.input.consensus_encode(s)?; len += self.input.consensus_encode(&mut s)?;
self.output.consensus_encode(s)?; len += self.output.consensus_encode(&mut s)?;
for input in &self.input { for input in &self.input {
input.witness.consensus_encode(s)?; len += input.witness.consensus_encode(&mut s)?;
} }
} }
self.lock_time.consensus_encode(s) len += self.lock_time.consensus_encode(s)?;
Ok(len)
} }
} }
impl<D: Decoder> Decodable<D> for Transaction { impl Decodable for Transaction {
fn consensus_decode(d: &mut D) -> Result<Transaction, encode::Error> { fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, encode::Error> {
let version: u32 = Decodable::consensus_decode(d)?; let version = u32::consensus_decode(&mut d)?;
let input: Vec<TxIn> = Decodable::consensus_decode(d)?; let input = Vec::<TxIn>::consensus_decode(&mut d)?;
// segwit // segwit
if input.is_empty() { if input.is_empty() {
let segwit_flag: u8 = Decodable::consensus_decode(d)?; let segwit_flag = u8::consensus_decode(&mut d)?;
match segwit_flag { match segwit_flag {
// BIP144 input witnesses // BIP144 input witnesses
1 => { 1 => {
let mut input: Vec<TxIn> = Decodable::consensus_decode(d)?; let mut input = Vec::<TxIn>::consensus_decode(&mut d)?;
let output: Vec<TxOut> = Decodable::consensus_decode(d)?; let output = Vec::<TxOut>::consensus_decode(&mut d)?;
for txin in input.iter_mut() { for txin in input.iter_mut() {
txin.witness = Decodable::consensus_decode(d)?; txin.witness = Decodable::consensus_decode(&mut d)?;
} }
if !input.is_empty() && input.iter().all(|input| input.witness.is_empty()) { if !input.is_empty() && input.iter().all(|input| input.witness.is_empty()) {
Err(encode::Error::ParseFailed("witness flag set but no witnesses present")) Err(encode::Error::ParseFailed("witness flag set but no witnesses present"))
@ -534,7 +547,7 @@ impl<D: Decoder> Decodable<D> for Transaction {
Ok(Transaction { Ok(Transaction {
version: version, version: version,
input: input, input: input,
output: Decodable::consensus_decode(d)?, output: Decodable::consensus_decode(&mut d)?,
lock_time: Decodable::consensus_decode(d)?, lock_time: Decodable::consensus_decode(d)?,
}) })
} }

274
src/consensus/encode.rs
View File

@ -199,26 +199,20 @@ impl From<psbt::Error> for Error {
} }
/// Encode an object into a vector /// Encode an object into a vector
pub fn serialize<T: ?Sized>(data: &T) -> Vec<u8> pub fn serialize<T: Encodable + ?Sized>(data: &T) -> Vec<u8> {
where T: Encodable<Cursor<Vec<u8>>>,
{
let mut encoder = Cursor::new(vec![]); let mut encoder = Cursor::new(vec![]);
data.consensus_encode(&mut encoder).unwrap(); data.consensus_encode(&mut encoder).unwrap();
encoder.into_inner() encoder.into_inner()
} }
/// Encode an object into a hex-encoded string /// Encode an object into a hex-encoded string
pub fn serialize_hex<T: ?Sized>(data: &T) -> String pub fn serialize_hex<T: Encodable + ?Sized>(data: &T) -> String {
where T: Encodable<Cursor<Vec<u8>>>
{
hex_encode(serialize(data)) hex_encode(serialize(data))
} }
/// Deserialize an object from a vector, will error if said deserialization /// Deserialize an object from a vector, will error if said deserialization
/// doesn't consume the entire vector. /// doesn't consume the entire vector.
pub fn deserialize<'a, T>(data: &'a [u8]) -> Result<T, Error> pub fn deserialize<'a, T: Decodable>(data: &'a [u8]) -> Result<T, Error> {
where T: Decodable<Cursor<&'a [u8]>>
{
let (rv, consumed) = deserialize_partial(data)?; let (rv, consumed) = deserialize_partial(data)?;
// Fail if data are not consumed entirely. // Fail if data are not consumed entirely.
@ -231,9 +225,9 @@ pub fn deserialize<'a, T>(data: &'a [u8]) -> Result<T, Error>
/// Deserialize an object from a vector, but will not report an error if said deserialization /// Deserialize an object from a vector, but will not report an error if said deserialization
/// doesn't consume the entire vector. /// doesn't consume the entire vector.
pub fn deserialize_partial<'a, T>(data: &'a [u8]) -> Result<(T, usize), Error> pub fn deserialize_partial<'a, T: Decodable>(
where T: Decodable<Cursor<&'a [u8]>> data: &'a [u8],
{ ) -> Result<(T, usize), Error> {
let mut decoder = Cursor::new(data); let mut decoder = Cursor::new(data);
let rv = Decodable::consensus_decode(&mut decoder)?; let rv = Decodable::consensus_decode(&mut decoder)?;
let consumed = decoder.position() as usize; let consumed = decoder.position() as usize;
@ -242,8 +236,8 @@ pub fn deserialize_partial<'a, T>(data: &'a [u8]) -> Result<(T, usize), Error>
} }
/// A simple Encoder trait /// Extensions of `Write` to encode data as per Bitcoin consensus
pub trait Encoder { pub trait WriteExt {
/// Output a 64-bit uint /// Output a 64-bit uint
fn emit_u64(&mut self, v: u64) -> Result<(), Error>; fn emit_u64(&mut self, v: u64) -> Result<(), Error>;
/// Output a 32-bit uint /// Output a 32-bit uint
@ -269,8 +263,8 @@ pub trait Encoder {
fn emit_slice(&mut self, v: &[u8]) -> Result<(), Error>; fn emit_slice(&mut self, v: &[u8]) -> Result<(), Error>;
} }
/// A simple Decoder trait /// Extensions of `Read` to decode data as per Bitcoin consensus
pub trait Decoder { pub trait ReadExt {
/// Read a 64-bit uint /// Read a 64-bit uint
fn read_u64(&mut self) -> Result<u64, Error>; fn read_u64(&mut self) -> Result<u64, Error>;
/// Read a 32-bit uint /// Read a 32-bit uint
@ -314,7 +308,7 @@ macro_rules! decoder_fn {
} }
} }
impl<W: Write> Encoder for W { impl<W: Write> WriteExt for W {
encoder_fn!(emit_u64, u64, write_u64); encoder_fn!(emit_u64, u64, write_u64);
encoder_fn!(emit_u32, u32, write_u32); encoder_fn!(emit_u32, u32, write_u32);
encoder_fn!(emit_u16, u16, write_u16); encoder_fn!(emit_u16, u16, write_u16);
@ -340,7 +334,7 @@ impl<W: Write> Encoder for W {
} }
} }
impl<R: Read> Decoder for R { impl<R: Read> ReadExt for R {
decoder_fn!(read_u64, u64, read_u64); decoder_fn!(read_u64, u64, read_u64);
decoder_fn!(read_u32, u32, read_u32); decoder_fn!(read_u32, u32, read_u32);
decoder_fn!(read_u16, u16, read_u16); decoder_fn!(read_u16, u16, read_u16);
@ -358,7 +352,7 @@ impl<R: Read> Decoder for R {
} }
#[inline] #[inline]
fn read_bool(&mut self) -> Result<bool, Error> { fn read_bool(&mut self) -> Result<bool, Error> {
Decoder::read_i8(self).map(|bit| bit != 0) ReadExt::read_i8(self).map(|bit| bit != 0)
} }
#[inline] #[inline]
fn read_slice(&mut self, slice: &mut [u8]) -> Result<(), Error> { fn read_slice(&mut self, slice: &mut [u8]) -> Result<(), Error> {
@ -370,16 +364,17 @@ impl<R: Read> Decoder for R {
pub const MAX_VEC_SIZE: usize = 32 * 1024 * 1024; pub const MAX_VEC_SIZE: usize = 32 * 1024 * 1024;
/// Data which can be encoded in a consensus-consistent way /// Data which can be encoded in a consensus-consistent way
pub trait Encodable<S: Encoder> { pub trait Encodable {
/// Encode an object with a well-defined format, should only ever error if /// Encode an object with a well-defined format, should only ever error if
/// the underlying Encoder errors. /// the underlying `Write` errors. Returns the number of bytes written on
fn consensus_encode(&self, e: &mut S) -> Result<(), self::Error>; /// success
fn consensus_encode<W: io::Write>(&self, e: W) -> Result<usize, Error>;
} }
/// Data which can be encoded in a consensus-consistent way /// Data which can be encoded in a consensus-consistent way
pub trait Decodable<D: Decoder>: Sized { pub trait Decodable: Sized {
/// Decode an object with a well-defined format /// Decode an object with a well-defined format
fn consensus_decode(d: &mut D) -> Result<Self, self::Error>; fn consensus_decode<D: io::Read>(d: D) -> Result<Self, Error>;
} }
/// A variable-length unsigned integer /// A variable-length unsigned integer
@ -393,14 +388,22 @@ pub struct CheckedData(pub Vec<u8>);
// Primitive types // Primitive types
macro_rules! impl_int_encodable{ macro_rules! impl_int_encodable{
($ty:ident, $meth_dec:ident, $meth_enc:ident) => ( ($ty:ident, $meth_dec:ident, $meth_enc:ident) => (
impl<D: Decoder> Decodable<D> for $ty { impl Decodable for $ty {
#[inline] #[inline]
fn consensus_decode(d: &mut D) -> Result<$ty, self::Error> { d.$meth_dec().map($ty::from_le) } fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, Error> {
ReadExt::$meth_dec(&mut d).map($ty::from_le)
}
} }
impl<S: Encoder> Encodable<S> for $ty { impl Encodable for $ty {
#[inline] #[inline]
fn consensus_encode(&self, s: &mut S) -> Result<(), self::Error> { s.$meth_enc(self.to_le()) } fn consensus_encode<S: WriteExt>(
&self,
mut s: S,
) -> Result<usize, self::Error> {
s.$meth_enc(self.to_le())?;
Ok(mem::size_of::<$ty>())
}
} }
) )
} }
@ -419,7 +422,7 @@ impl VarInt {
/// Returns 1 for 0...0xFC, 3 for 0xFD...(2^16-1), 5 for 0x10000...(2^32-1), /// Returns 1 for 0...0xFC, 3 for 0xFD...(2^16-1), 5 for 0x10000...(2^32-1),
/// and 9 otherwise. /// and 9 otherwise.
#[inline] #[inline]
pub fn encoded_length(&self) -> u64 { pub fn len(&self) -> usize {
match self.0 { match self.0 {
0...0xFC => { 1 } 0...0xFC => { 1 }
0xFD...0xFFFF => { 3 } 0xFD...0xFFFF => { 3 }
@ -429,25 +432,40 @@ impl VarInt {
} }
} }
impl<S: Encoder> Encodable<S> for VarInt { impl Encodable for VarInt {
#[inline] #[inline]
fn consensus_encode(&self, s: &mut S) -> Result<(), self::Error> { fn consensus_encode<S: io::Write>(&self, mut s: S) -> Result<usize, Error> {
match self.0 { match self.0 {
0...0xFC => { (self.0 as u8).consensus_encode(s) } 0...0xFC => {
0xFD...0xFFFF => { s.emit_u8(0xFD)?; (self.0 as u16).consensus_encode(s) } (self.0 as u8).consensus_encode(s)?;
0x10000...0xFFFFFFFF => { s.emit_u8(0xFE)?; (self.0 as u32).consensus_encode(s) } Ok(1)
_ => { s.emit_u8(0xFF)?; (self.0 as u64).consensus_encode(s) } },
0xFD...0xFFFF => {
s.emit_u8(0xFD)?;
(self.0 as u16).consensus_encode(s)?;
Ok(3)
},
0x10000...0xFFFFFFFF => {
s.emit_u8(0xFE)?;
(self.0 as u32).consensus_encode(s)?;
Ok(5)
},
_ => {
s.emit_u8(0xFF)?;
(self.0 as u64).consensus_encode(s)?;
Ok(9)
},
} }
} }
} }
impl<D: Decoder> Decodable<D> for VarInt { impl Decodable for VarInt {
#[inline] #[inline]
fn consensus_decode(d: &mut D) -> Result<VarInt, self::Error> { fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, Error> {
let n = d.read_u8()?; let n = ReadExt::read_u8(&mut d)?;
match n { match n {
0xFF => { 0xFF => {
let x = d.read_u64()?; let x = ReadExt::read_u64(&mut d)?;
if x < 0x100000000 { if x < 0x100000000 {
Err(self::Error::ParseFailed("non-minimal varint")) Err(self::Error::ParseFailed("non-minimal varint"))
} else { } else {
@ -455,7 +473,7 @@ impl<D: Decoder> Decodable<D> for VarInt {
} }
} }
0xFE => { 0xFE => {
let x = d.read_u32()?; let x = ReadExt::read_u32(&mut d)?;
if x < 0x10000 { if x < 0x10000 {
Err(self::Error::ParseFailed("non-minimal varint")) Err(self::Error::ParseFailed("non-minimal varint"))
} else { } else {
@ -463,7 +481,7 @@ impl<D: Decoder> Decodable<D> for VarInt {
} }
} }
0xFD => { 0xFD => {
let x = d.read_u16()?; let x = ReadExt::read_u16(&mut d)?;
if x < 0xFD { if x < 0xFD {
Err(self::Error::ParseFailed("non-minimal varint")) Err(self::Error::ParseFailed("non-minimal varint"))
} else { } else {
@ -477,29 +495,35 @@ impl<D: Decoder> Decodable<D> for VarInt {
// Booleans // Booleans
impl<S: Encoder> Encodable<S> for bool { impl Encodable for bool {
#[inline] #[inline]
fn consensus_encode(&self, s: &mut S) -> Result<(), self::Error> { s.emit_u8(if *self {1} else {0}) } fn consensus_encode<S: WriteExt>(&self, mut s: S) -> Result<usize, Error> {
} s.emit_u8(if *self {1} else {0})?;
Ok(1)
impl<D: Decoder> Decodable<D> for bool {
#[inline]
fn consensus_decode(d: &mut D) -> Result<bool, self::Error> { d.read_u8().map(|n| n != 0) }
}
// Strings
impl<S: Encoder> Encodable<S> for String {
#[inline]
fn consensus_encode(&self, s: &mut S) -> Result<(), self::Error> {
let b = self.as_bytes();
VarInt(b.len() as u64).consensus_encode(s)?;
s.emit_slice(&b)
} }
} }
impl<D: Decoder> Decodable<D> for String { impl Decodable for bool {
#[inline] #[inline]
fn consensus_decode(d: &mut D) -> Result<String, self::Error> { fn consensus_decode<D: io::Read>(mut d: D) -> Result<bool, Error> {
ReadExt::read_u8(&mut d).map(|n| n != 0)
}
}
// Strings
impl Encodable for String {
#[inline]
fn consensus_encode<S: io::Write>(&self, mut s: S) -> Result<usize, Error> {
let b = self.as_bytes();
let vi_len = VarInt(b.len() as u64).consensus_encode(&mut s)?;
s.emit_slice(&b)?;
Ok(vi_len + b.len())
}
}
impl Decodable for String {
#[inline]
fn consensus_decode<D: io::Read>(d: D) -> Result<String, Error> {
String::from_utf8(Decodable::consensus_decode(d)?) String::from_utf8(Decodable::consensus_decode(d)?)
.map_err(|_| self::Error::ParseFailed("String was not valid UTF8")) .map_err(|_| self::Error::ParseFailed("String was not valid UTF8"))
} }
@ -509,16 +533,20 @@ impl<D: Decoder> Decodable<D> for String {
// Arrays // Arrays
macro_rules! impl_array { macro_rules! impl_array {
( $size:expr ) => ( ( $size:expr ) => (
impl<S: Encoder> Encodable<S> for [u8; $size] { impl Encodable for [u8; $size] {
#[inline] #[inline]
fn consensus_encode(&self, s: &mut S) -> Result<(), self::Error> { fn consensus_encode<S: WriteExt>(
s.emit_slice(&self[..]) &self,
mut s: S,
) -> Result<usize, Error> {
s.emit_slice(&self[..])?;
Ok(self.len())
} }
} }
impl<D: Decoder> Decodable<D> for [u8; $size] { impl Decodable for [u8; $size] {
#[inline] #[inline]
fn consensus_decode(d: &mut D) -> Result<[u8; $size], self::Error> { fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, Error> {
let mut ret = [0; $size]; let mut ret = [0; $size];
d.read_slice(&mut ret)?; d.read_slice(&mut ret)?;
Ok(ret) Ok(ret)
@ -535,41 +563,47 @@ impl_array!(16);
impl_array!(32); impl_array!(32);
impl_array!(33); impl_array!(33);
impl<D: Decoder> Decodable<D> for [u16; 8] { impl Decodable for [u16; 8] {
#[inline] #[inline]
fn consensus_decode(d: &mut D) -> Result<[u16; 8], self::Error> { fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, Error> {
let mut res = [0; 8]; let mut res = [0; 8];
for i in 0..8 { for i in 0..8 {
res[i] = Decodable::consensus_decode(d)?; res[i] = Decodable::consensus_decode(&mut d)?;
} }
Ok(res) Ok(res)
} }
} }
impl<S: Encoder> Encodable<S> for [u16; 8] { impl Encodable for [u16; 8] {
#[inline] #[inline]
fn consensus_encode(&self, s: &mut S) -> Result<(), self::Error> { fn consensus_encode<S: io::Write>(&self, mut s: S) -> Result<usize, Error> {
for c in self.iter() { c.consensus_encode(s)?; } for c in self.iter() { c.consensus_encode(&mut s)?; }
Ok(()) Ok(16)
} }
} }
// Vectors // Vectors
macro_rules! impl_vec { macro_rules! impl_vec {
($type: ty) => { ($type: ty) => {
impl<S: Encoder> Encodable<S> for Vec<$type> { impl Encodable for Vec<$type> {
#[inline] #[inline]
fn consensus_encode(&self, s: &mut S) -> Result<(), self::Error> { fn consensus_encode<S: io::Write>(
VarInt(self.len() as u64).consensus_encode(s)?; &self,
for c in self.iter() { c.consensus_encode(s)?; } mut s: S,
Ok(()) ) -> Result<usize, Error> {
let mut len = 0;
len += VarInt(self.len() as u64).consensus_encode(&mut s)?;
for c in self.iter() {
len += c.consensus_encode(&mut s)?;
}
Ok(len)
} }
} }
impl<D: Decoder> Decodable<D> for Vec<$type> { impl Decodable for Vec<$type> {
#[inline] #[inline]
fn consensus_decode(d: &mut D) -> Result<Vec<$type>, self::Error> { fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, Error> {
let len = VarInt::consensus_decode(d)?.0; let len = VarInt::consensus_decode(&mut d)?.0;
let byte_size = (len as usize) let byte_size = (len as usize)
.checked_mul(mem::size_of::<$type>()) .checked_mul(mem::size_of::<$type>())
.ok_or(self::Error::ParseFailed("Invalid length"))?; .ok_or(self::Error::ParseFailed("Invalid length"))?;
@ -577,7 +611,9 @@ macro_rules! impl_vec {
return Err(self::Error::OversizedVectorAllocation { requested: byte_size, max: MAX_VEC_SIZE }) return Err(self::Error::OversizedVectorAllocation { requested: byte_size, max: MAX_VEC_SIZE })
} }
let mut ret = Vec::with_capacity(len as usize); let mut ret = Vec::with_capacity(len as usize);
for _ in 0..len { ret.push(Decodable::consensus_decode(d)?); } for _ in 0..len {
ret.push(Decodable::consensus_decode(&mut d)?);
}
Ok(ret) Ok(ret)
} }
} }
@ -592,19 +628,19 @@ impl_vec!(Vec<u8>);
impl_vec!((u32, Address)); impl_vec!((u32, Address));
impl_vec!(u64); impl_vec!(u64);
impl<S: Encoder> Encodable<S> for Vec<u8> { impl Encodable for Vec<u8> {
#[inline] #[inline]
fn consensus_encode(&self, s: &mut S) -> Result<(), self::Error> { fn consensus_encode<S: io::Write>(&self, mut s: S) -> Result<usize, Error> {
VarInt(self.len() as u64).consensus_encode(s)?; let vi_len = VarInt(self.len() as u64).consensus_encode(&mut s)?;
s.emit_slice(&self) s.emit_slice(&self)?;
Ok(vi_len + self.len())
} }
} }
impl<D: Decoder> Decodable<D> for Vec<u8> { impl Decodable for Vec<u8> {
#[inline] #[inline]
fn consensus_decode(d: &mut D) -> Result<Vec<u8>, self::Error> { fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, Error> {
let len = VarInt::consensus_decode(d)?.0; let len = VarInt::consensus_decode(&mut d)?.0 as usize;
let len = len as usize;
if len > MAX_VEC_SIZE { if len > MAX_VEC_SIZE {
return Err(self::Error::OversizedVectorAllocation { requested: len, max: MAX_VEC_SIZE }) return Err(self::Error::OversizedVectorAllocation { requested: len, max: MAX_VEC_SIZE })
} }
@ -615,18 +651,19 @@ impl<D: Decoder> Decodable<D> for Vec<u8> {
} }
} }
impl<S: Encoder> Encodable<S> for Box<[u8]> { impl Encodable for Box<[u8]> {
#[inline] #[inline]
fn consensus_encode(&self, s: &mut S) -> Result<(), self::Error> { fn consensus_encode<S: io::Write>(&self, mut s: S) -> Result<usize, Error> {
VarInt(self.len() as u64).consensus_encode(s)?; let vi_len = VarInt(self.len() as u64).consensus_encode(&mut s)?;
s.emit_slice(&self) s.emit_slice(&self)?;
Ok(vi_len + self.len())
} }
} }
impl<D: Decoder> Decodable<D> for Box<[u8]> { impl Decodable for Box<[u8]> {
#[inline] #[inline]
fn consensus_decode(d: &mut D) -> Result<Box<[u8]>, self::Error> { fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, Error> {
let len = VarInt::consensus_decode(d)?.0; let len = VarInt::consensus_decode(&mut d)?.0;
let len = len as usize; let len = len as usize;
if len > MAX_VEC_SIZE { if len > MAX_VEC_SIZE {
return Err(self::Error::OversizedVectorAllocation { requested: len, max: MAX_VEC_SIZE }) return Err(self::Error::OversizedVectorAllocation { requested: len, max: MAX_VEC_SIZE })
@ -646,26 +683,27 @@ fn sha2_checksum(data: &[u8]) -> [u8; 4] {
} }
// Checked data // Checked data
impl<S: Encoder> Encodable<S> for CheckedData { impl Encodable for CheckedData {
#[inline] #[inline]
fn consensus_encode(&self, s: &mut S) -> Result<(), self::Error> { fn consensus_encode<S: io::Write>(&self, mut s: S) -> Result<usize, Error> {
(self.0.len() as u32).consensus_encode(s)?; (self.0.len() as u32).consensus_encode(&mut s)?;
sha2_checksum(&self.0).consensus_encode(s)?; sha2_checksum(&self.0).consensus_encode(&mut s)?;
s.emit_slice(&self.0) s.emit_slice(&self.0)?;
Ok(8 + self.0.len())
} }
} }
impl<D: Decoder> Decodable<D> for CheckedData { impl Decodable for CheckedData {
#[inline] #[inline]
fn consensus_decode(d: &mut D) -> Result<CheckedData, self::Error> { fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, Error> {
let len: u32 = Decodable::consensus_decode(d)?; let len = u32::consensus_decode(&mut d)?;
if len > MAX_VEC_SIZE as u32 { if len > MAX_VEC_SIZE as u32 {
return Err(self::Error::OversizedVectorAllocation { return Err(self::Error::OversizedVectorAllocation {
requested: len as usize, requested: len as usize,
max: MAX_VEC_SIZE max: MAX_VEC_SIZE
}); });
} }
let checksum: [u8; 4] = Decodable::consensus_decode(d)?; let checksum = <[u8; 4]>::consensus_decode(&mut d)?;
let mut ret = Vec::with_capacity(len as usize); let mut ret = Vec::with_capacity(len as usize);
ret.resize(len as usize, 0); ret.resize(len as usize, 0);
d.read_slice(&mut ret)?; d.read_slice(&mut ret)?;
@ -684,21 +722,25 @@ impl<D: Decoder> Decodable<D> for CheckedData {
// Tuples // Tuples
macro_rules! tuple_encode { macro_rules! tuple_encode {
($($x:ident),*) => ( ($($x:ident),*) => (
impl <S: Encoder, $($x: Encodable<S>),*> Encodable<S> for ($($x),*) { impl <$($x: Encodable),*> Encodable for ($($x),*) {
#[inline] #[inline]
#[allow(non_snake_case)] #[allow(non_snake_case)]
fn consensus_encode(&self, s: &mut S) -> Result<(), self::Error> { fn consensus_encode<S: io::Write>(
&self,
mut s: S,
) -> Result<usize, self::Error> {
let &($(ref $x),*) = self; let &($(ref $x),*) = self;
$( $x.consensus_encode(s)?; )* let mut len = 0;
Ok(()) $(len += $x.consensus_encode(&mut s)?;)*
Ok(len)
} }
} }
impl<D: Decoder, $($x: Decodable<D>),*> Decodable<D> for ($($x),*) { impl<$($x: Decodable),*> Decodable for ($($x),*) {
#[inline] #[inline]
#[allow(non_snake_case)] #[allow(non_snake_case)]
fn consensus_decode(d: &mut D) -> Result<($($x),*), self::Error> { fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, Error> {
Ok(($({let $x = Decodable::consensus_decode(d)?; $x }),*)) Ok(($({let $x = Decodable::consensus_decode(&mut d)?; $x }),*))
} }
} }
); );
@ -709,15 +751,15 @@ tuple_encode!(T0, T1, T2, T3);
tuple_encode!(T0, T1, T2, T3, T4, T5); tuple_encode!(T0, T1, T2, T3, T4, T5);
tuple_encode!(T0, T1, T2, T3, T4, T5, T6, T7); tuple_encode!(T0, T1, T2, T3, T4, T5, T6, T7);
impl<S: Encoder> Encodable<S> for sha256d::Hash { impl Encodable for sha256d::Hash {
fn consensus_encode(&self, s: &mut S) -> Result<(), self::Error> { fn consensus_encode<S: io::Write>(&self, s: S) -> Result<usize, Error> {
self.into_inner().consensus_encode(s) self.into_inner().consensus_encode(s)
} }
} }
impl<D: Decoder> Decodable<D> for sha256d::Hash { impl Decodable for sha256d::Hash {
fn consensus_decode(d: &mut D) -> Result<sha256d::Hash, self::Error> { fn consensus_decode<D: io::Read>(d: D) -> Result<Self, Error> {
let inner: [u8; 32] = Decodable::consensus_decode(d)?; let inner = <[u8; 32]>::consensus_decode(d)?;
Ok(sha256d::Hash::from_slice(&inner).unwrap()) Ok(sha256d::Hash::from_slice(&inner).unwrap())
} }
} }

4
src/consensus/mod.rs
View File

@ -21,6 +21,6 @@
pub mod encode; pub mod encode;
pub mod params; pub mod params;
pub use self::encode::{Encodable, Decodable, Encoder, Decoder, pub use self::encode::{Encodable, Decodable, WriteExt, ReadExt};
serialize, deserialize, deserialize_partial}; pub use self::encode::{serialize, deserialize, deserialize_partial};
pub use self::params::Params; pub use self::params::Params;

21
src/internal_macros.rs
View File

@ -18,20 +18,25 @@
macro_rules! impl_consensus_encoding { macro_rules! impl_consensus_encoding {
($thing:ident, $($field:ident),+) => ( ($thing:ident, $($field:ident),+) => (
impl<S: ::consensus::encode::Encoder> ::consensus::encode::Encodable<S> for $thing { impl ::consensus::Encodable for $thing {
#[inline] #[inline]
fn consensus_encode(&self, s: &mut S) -> Result<(), ::consensus::encode::Error> { fn consensus_encode<S: ::std::io::Write>(
$( self.$field.consensus_encode(s)?; )+ &self,
Ok(()) mut s: S,
) -> Result<usize, ::consensus::encode::Error> {
let mut len = 0;
$(len += self.$field.consensus_encode(&mut s)?;)+
Ok(len)
} }
} }
impl<D: ::consensus::encode::Decoder> ::consensus::encode::Decodable<D> for $thing { impl ::consensus::Decodable for $thing {
#[inline] #[inline]
fn consensus_decode(d: &mut D) -> Result<$thing, ::consensus::encode::Error> { fn consensus_decode<D: ::std::io::Read>(
use consensus::encode::Decodable; mut d: D,
) -> Result<$thing, ::consensus::encode::Error> {
Ok($thing { Ok($thing {
$( $field: Decodable::consensus_decode(d)?, )+ $($field: ::consensus::Decodable::consensus_decode(&mut d)?),+
}) })
} }
} }

3
src/lib.rs
View File

@ -56,6 +56,9 @@ extern crate secp256k1;
#[cfg(all(test, feature = "unstable"))] extern crate test; #[cfg(all(test, feature = "unstable"))] extern crate test;
#[cfg(feature="bitcoinconsensus")] extern crate bitcoinconsensus; #[cfg(feature="bitcoinconsensus")] extern crate bitcoinconsensus;
#[cfg(target_pointer_width = "16")]
compile_error!("rust-bitcoin cannot be used on 16-bit architectures");
#[cfg(test)] #[cfg(test)]
#[macro_use] #[macro_use]
mod test_macros; mod test_macros;

25
src/network/address.rs
View File

@ -22,8 +22,7 @@ use std::io;
use std::fmt; use std::fmt;
use std::net::{SocketAddr, Ipv6Addr, SocketAddrV4, SocketAddrV6}; use std::net::{SocketAddr, Ipv6Addr, SocketAddrV4, SocketAddrV6};
use consensus::encode::{self, Encoder, Decoder}; use consensus::encode::{self, Decodable, Encodable};
use consensus::encode::{Decodable, Encodable};
/// A message which can be sent on the Bitcoin network /// A message which can be sent on the Bitcoin network
pub struct Address { pub struct Address {
@ -72,21 +71,25 @@ fn addr_to_be(addr: [u16; 8]) -> [u16; 8] {
addr[4].to_be(), addr[5].to_be(), addr[6].to_be(), addr[7].to_be()] addr[4].to_be(), addr[5].to_be(), addr[6].to_be(), addr[7].to_be()]
} }
impl<S: Encoder> Encodable<S> for Address { impl Encodable for Address {
#[inline] #[inline]
fn consensus_encode(&self, s: &mut S) -> Result<(), encode::Error> { fn consensus_encode<S: io::Write>(
self.services.consensus_encode(s)?; &self,
addr_to_be(self.address).consensus_encode(s)?; mut s: S,
self.port.to_be().consensus_encode(s) ) -> Result<usize, encode::Error> {
let len = self.services.consensus_encode(&mut s)?
+ addr_to_be(self.address).consensus_encode(&mut s)?
+ self.port.to_be().consensus_encode(s)?;
Ok(len)
} }
} }
impl<D: Decoder> Decodable<D> for Address { impl Decodable for Address {
#[inline] #[inline]
fn consensus_decode(d: &mut D) -> Result<Address, encode::Error> { fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, encode::Error> {
Ok(Address { Ok(Address {
services: Decodable::consensus_decode(d)?, services: Decodable::consensus_decode(&mut d)?,
address: addr_to_be(Decodable::consensus_decode(d)?), address: addr_to_be(Decodable::consensus_decode(&mut d)?),
port: u16::from_be(Decodable::consensus_decode(d)?) port: u16::from_be(Decodable::consensus_decode(d)?)
}) })
} }

68
src/network/constants.rs
View File

@ -32,14 +32,11 @@
//! use bitcoin::consensus::encode::serialize; //! use bitcoin::consensus::encode::serialize;
//! //!
//! let network = Network::Bitcoin; //! let network = Network::Bitcoin;
//! let bytes = serialize(&network); //! let bytes = serialize(&network.magic());
//! //!
//! assert_eq!(&bytes[..], &[0xF9, 0xBE, 0xB4, 0xD9]); //! assert_eq!(&bytes[..], &[0xF9, 0xBE, 0xB4, 0xD9]);
//! ``` //! ```
use consensus::encode::{Decodable, Encodable};
use consensus::encode::{self, Encoder, Decoder};
/// Version of the protocol as appearing in network message headers /// Version of the protocol as appearing in network message headers
pub const PROTOCOL_VERSION: u32 = 70001; pub const PROTOCOL_VERSION: u32 = 70001;
/// Bitfield of services provided by this node /// Bitfield of services provided by this node
@ -102,44 +99,39 @@ impl Network {
} }
} }
impl<S: Encoder> Encodable<S> for Network {
/// Encodes the magic bytes of `Network`.
#[inline]
fn consensus_encode(&self, s: &mut S) -> Result<(), encode::Error> {
self.magic().consensus_encode(s)
}
}
impl<D: Decoder> Decodable<D> for Network {
/// Decodes the magic bytes of `Network`.
#[inline]
fn consensus_decode(d: &mut D) -> Result<Network, encode::Error> {
u32::consensus_decode(d)
.and_then(|m| {
Network::from_magic(m)
.ok_or(encode::Error::UnknownNetworkMagic(m))
})
}
}
#[cfg(test)] #[cfg(test)]
mod tests { mod tests {
use super::Network; use super::Network;
use consensus::encode::{deserialize, serialize}; use consensus::encode::{deserialize, serialize};
#[test] #[test]
fn serialize_test() { fn serialize_test() {
assert_eq!(serialize(&Network::Bitcoin), vec![0xf9, 0xbe, 0xb4, 0xd9]); assert_eq!(
assert_eq!(serialize(&Network::Testnet), vec![0x0b, 0x11, 0x09, 0x07]); serialize(&Network::Bitcoin.magic()),
assert_eq!(serialize(&Network::Regtest), vec![0xfa, 0xbf, 0xb5, 0xda]); &[0xf9, 0xbe, 0xb4, 0xd9]
);
assert_eq!(
serialize(&Network::Testnet.magic()),
&[0x0b, 0x11, 0x09, 0x07]
);
assert_eq!(
serialize(&Network::Regtest.magic()),
&[0xfa, 0xbf, 0xb5, 0xda]
);
assert_eq!(deserialize(&[0xf9, 0xbe, 0xb4, 0xd9]).ok(), Some(Network::Bitcoin)); assert_eq!(
assert_eq!(deserialize(&[0x0b, 0x11, 0x09, 0x07]).ok(), Some(Network::Testnet)); deserialize(&[0xf9, 0xbe, 0xb4, 0xd9]).ok(),
assert_eq!(deserialize(&[0xfa, 0xbf, 0xb5, 0xda]).ok(), Some(Network::Regtest)); Some(Network::Bitcoin.magic())
);
let bad: Result<Network, _> = deserialize("fakenet".as_bytes()); assert_eq!(
assert!(bad.is_err()); deserialize(&[0x0b, 0x11, 0x09, 0x07]).ok(),
} Some(Network::Testnet.magic())
);
assert_eq!(
deserialize(&[0xfa, 0xbf, 0xb5, 0xda]).ok(),
Some(Network::Regtest.magic())
);
}
#[test] #[test]
fn string_test() { fn string_test() {

85
src/network/message.rs
View File

@ -19,7 +19,7 @@
//! also defines (de)serialization routines for many primitives. //! also defines (de)serialization routines for many primitives.
//! //!
use std::{iter, mem}; use std::{io, iter, mem};
use std::io::Cursor; use std::io::Cursor;
use blockdata::block; use blockdata::block;
@ -28,18 +28,20 @@ use network::address::Address;
use network::message_network; use network::message_network;
use network::message_blockdata; use network::message_blockdata;
use network::message_filter; use network::message_filter;
use consensus::encode::{Decodable, Encodable}; use consensus::encode::{CheckedData, Decodable, Encodable, VarInt};
use consensus::encode::{CheckedData, VarInt}; use consensus::{encode, serialize};
use consensus::encode::{self, serialize, Encoder, Decoder};
use consensus::encode::MAX_VEC_SIZE; use consensus::encode::MAX_VEC_SIZE;
/// Serializer for command string /// Serializer for command string
#[derive(PartialEq, Eq, Clone, Debug)] #[derive(PartialEq, Eq, Clone, Debug)]
pub struct CommandString(pub String); pub struct CommandString(pub String);
impl<S: Encoder> Encodable<S> for CommandString { impl Encodable for CommandString {
#[inline] #[inline]
fn consensus_encode(&self, s: &mut S) -> Result<(), encode::Error> { fn consensus_encode<S: io::Write>(
&self,
s: S,
) -> Result<usize, encode::Error> {
let &CommandString(ref inner_str) = self; let &CommandString(ref inner_str) = self;
let mut rawbytes = [0u8; 12]; let mut rawbytes = [0u8; 12];
let strbytes = inner_str.as_bytes(); let strbytes = inner_str.as_bytes();
@ -53,11 +55,15 @@ impl<S: Encoder> Encodable<S> for CommandString {
} }
} }
impl<D: Decoder> Decodable<D> for CommandString { impl Decodable for CommandString {
#[inline] #[inline]
fn consensus_decode(d: &mut D) -> Result<CommandString, encode::Error> { fn consensus_decode<D: io::Read>(d: D) -> Result<Self, encode::Error> {
let rawbytes: [u8; 12] = Decodable::consensus_decode(d)?; let rawbytes: [u8; 12] = Decodable::consensus_decode(d)?;
let rv = iter::FromIterator::from_iter(rawbytes.iter().filter_map(|&u| if u > 0 { Some(u as char) } else { None })); let rv = iter::FromIterator::from_iter(
rawbytes
.iter()
.filter_map(|&u| if u > 0 { Some(u as char) } else { None })
);
Ok(CommandString(rv)) Ok(CommandString(rv))
} }
} }
@ -160,23 +166,32 @@ impl RawNetworkMessage {
} }
struct HeaderSerializationWrapper<'a>(&'a Vec<block::BlockHeader>); struct HeaderSerializationWrapper<'a>(&'a Vec<block::BlockHeader>);
impl <'a, S: Encoder> Encodable<S> for HeaderSerializationWrapper<'a> {
impl<'a> Encodable for HeaderSerializationWrapper<'a> {
#[inline] #[inline]
fn consensus_encode(&self, s: &mut S) -> Result<(), encode::Error> { fn consensus_encode<S: io::Write>(
VarInt(self.0.len() as u64).consensus_encode(s)?; &self,
mut s: S,
) -> Result<usize, encode::Error> {
let mut len = 0;
len += VarInt(self.0.len() as u64).consensus_encode(&mut s)?;
for header in self.0.iter() { for header in self.0.iter() {
header.consensus_encode(s)?; len += header.consensus_encode(&mut s)?;
0u8.consensus_encode(s)?; len += 0u8.consensus_encode(&mut s)?;
} }
Ok(()) Ok(len)
} }
} }
impl<S: Encoder> Encodable<S> for RawNetworkMessage { impl Encodable for RawNetworkMessage {
fn consensus_encode(&self, s: &mut S) -> Result<(), encode::Error> { fn consensus_encode<S: io::Write>(
self.magic.consensus_encode(s)?; &self,
CommandString(self.command()).consensus_encode(s)?; mut s: S,
CheckedData(match self.payload { ) -> Result<usize, encode::Error> {
let mut len = 0;
len += self.magic.consensus_encode(&mut s)?;
len += CommandString(self.command()).consensus_encode(&mut s)?;
len += CheckedData(match self.payload {
NetworkMessage::Version(ref dat) => serialize(dat), NetworkMessage::Version(ref dat) => serialize(dat),
NetworkMessage::Addr(ref dat) => serialize(dat), NetworkMessage::Addr(ref dat) => serialize(dat),
NetworkMessage::Inv(ref dat) => serialize(dat), NetworkMessage::Inv(ref dat) => serialize(dat),
@ -200,15 +215,17 @@ impl<S: Encoder> Encodable<S> for RawNetworkMessage {
| NetworkMessage::SendHeaders | NetworkMessage::SendHeaders
| NetworkMessage::MemPool | NetworkMessage::MemPool
| NetworkMessage::GetAddr => vec![], | NetworkMessage::GetAddr => vec![],
}).consensus_encode(s) }).consensus_encode(&mut s)?;
Ok(len)
} }
} }
struct HeaderDeserializationWrapper(Vec<block::BlockHeader>); struct HeaderDeserializationWrapper(Vec<block::BlockHeader>);
impl<D: Decoder> Decodable<D> for HeaderDeserializationWrapper {
impl Decodable for HeaderDeserializationWrapper {
#[inline] #[inline]
fn consensus_decode(d: &mut D) -> Result<HeaderDeserializationWrapper, encode::Error> { fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, encode::Error> {
let len = VarInt::consensus_decode(d)?.0; let len = VarInt::consensus_decode(&mut d)?.0;
let byte_size = (len as usize) let byte_size = (len as usize)
.checked_mul(mem::size_of::<block::BlockHeader>()) .checked_mul(mem::size_of::<block::BlockHeader>())
.ok_or(encode::Error::ParseFailed("Invalid length"))?; .ok_or(encode::Error::ParseFailed("Invalid length"))?;
@ -217,8 +234,8 @@ impl<D: Decoder> Decodable<D> for HeaderDeserializationWrapper {
} }
let mut ret = Vec::with_capacity(len as usize); let mut ret = Vec::with_capacity(len as usize);
for _ in 0..len { for _ in 0..len {
ret.push(Decodable::consensus_decode(d)?); ret.push(Decodable::consensus_decode(&mut d)?);
if <u8 as Decodable<D>>::consensus_decode(d)? != 0u8 { if u8::consensus_decode(&mut d)? != 0u8 {
return Err(encode::Error::ParseFailed("Headers message should not contain transactions")); return Err(encode::Error::ParseFailed("Headers message should not contain transactions"));
} }
} }
@ -226,11 +243,11 @@ impl<D: Decoder> Decodable<D> for HeaderDeserializationWrapper {
} }
} }
impl<D: Decoder> Decodable<D> for RawNetworkMessage { impl Decodable for RawNetworkMessage {
fn consensus_decode(d: &mut D) -> Result<RawNetworkMessage, encode::Error> { fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, encode::Error> {
let magic = Decodable::consensus_decode(d)?; let magic = Decodable::consensus_decode(&mut d)?;
let CommandString(cmd): CommandString= Decodable::consensus_decode(d)?; let cmd = CommandString::consensus_decode(&mut d)?.0;
let CheckedData(raw_payload): CheckedData = Decodable::consensus_decode(d)?; let raw_payload = CheckedData::consensus_decode(&mut d)?.0;
let mut mem_d = Cursor::new(raw_payload); let mut mem_d = Cursor::new(raw_payload);
let payload = match &cmd[..] { let payload = match &cmd[..] {
@ -244,9 +261,9 @@ impl<D: Decoder> Decodable<D> for RawNetworkMessage {
"getheaders" => NetworkMessage::GetHeaders(Decodable::consensus_decode(&mut mem_d)?), "getheaders" => NetworkMessage::GetHeaders(Decodable::consensus_decode(&mut mem_d)?),
"mempool" => NetworkMessage::MemPool, "mempool" => NetworkMessage::MemPool,
"block" => NetworkMessage::Block(Decodable::consensus_decode(&mut mem_d)?), "block" => NetworkMessage::Block(Decodable::consensus_decode(&mut mem_d)?),
"headers" => "headers" => NetworkMessage::Headers(
NetworkMessage::Headers(<HeaderDeserializationWrapper as Decodable<Cursor<Vec<u8>>>> HeaderDeserializationWrapper::consensus_decode(&mut mem_d)?.0
::consensus_decode(&mut mem_d)?.0), ),
"sendheaders" => NetworkMessage::SendHeaders, "sendheaders" => NetworkMessage::SendHeaders,
"getaddr" => NetworkMessage::GetAddr, "getaddr" => NetworkMessage::GetAddr,
"ping" => NetworkMessage::Ping(Decodable::consensus_decode(&mut mem_d)?), "ping" => NetworkMessage::Ping(Decodable::consensus_decode(&mut mem_d)?),

26
src/network/message_blockdata.rs
View File

@ -19,10 +19,11 @@
//! //!
use network::constants; use network::constants;
use consensus::encode::{Decodable, Encodable}; use consensus::encode::{self, Decodable, Encodable};
use consensus::encode::{self, Decoder, Encoder};
use bitcoin_hashes::sha256d; use bitcoin_hashes::sha256d;
use std::io;
#[derive(PartialEq, Eq, Clone, Debug)] #[derive(PartialEq, Eq, Clone, Debug)]
/// The type of an inventory object /// The type of an inventory object
pub enum InvType { pub enum InvType {
@ -101,24 +102,27 @@ impl GetHeadersMessage {
impl_consensus_encoding!(GetHeadersMessage, version, locator_hashes, stop_hash); impl_consensus_encoding!(GetHeadersMessage, version, locator_hashes, stop_hash);
impl<S: Encoder> Encodable<S> for Inventory { impl Encodable for Inventory {
#[inline] #[inline]
fn consensus_encode(&self, s: &mut S) -> Result<(), encode::Error> { fn consensus_encode<S: io::Write>(
match self.inv_type { &self,
InvType::Error => 0u32, mut s: S,
) -> Result<usize, encode::Error> {
let inv_len = match self.inv_type {
InvType::Error => 0u32,
InvType::Transaction => 1, InvType::Transaction => 1,
InvType::Block => 2, InvType::Block => 2,
InvType::WitnessBlock => 0x40000002, InvType::WitnessBlock => 0x40000002,
InvType::WitnessTransaction => 0x40000001 InvType::WitnessTransaction => 0x40000001
}.consensus_encode(s)?; }.consensus_encode(&mut s)?;
self.hash.consensus_encode(s) Ok(inv_len + self.hash.consensus_encode(&mut s)?)
} }
} }
impl<D: Decoder> Decodable<D> for Inventory { impl Decodable for Inventory {
#[inline] #[inline]
fn consensus_decode(d: &mut D) -> Result<Inventory, encode::Error> { fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, encode::Error> {
let int_type: u32 = Decodable::consensus_decode(d)?; let int_type: u32 = Decodable::consensus_decode(&mut d)?;
Ok(Inventory { Ok(Inventory {
inv_type: match int_type { inv_type: match int_type {
0 => InvType::Error, 0 => InvType::Error,

11
src/util/address.rs
View File

@ -20,13 +20,13 @@
//! ```rust //! ```rust
//! extern crate secp256k1; //! extern crate secp256k1;
//! extern crate bitcoin; //! extern crate bitcoin;
//! //!
//! use bitcoin::network::constants::Network; //! use bitcoin::network::constants::Network;
//! use bitcoin::util::address::Address; //! use bitcoin::util::address::Address;
//! use bitcoin::util::key; //! use bitcoin::util::key;
//! use secp256k1::Secp256k1; //! use secp256k1::Secp256k1;
//! use secp256k1::rand::thread_rng; //! use secp256k1::rand::thread_rng;
//! //!
//! fn main() { //! fn main() {
//! // Generate random key pair //! // Generate random key pair
//! let s = Secp256k1::new(); //! let s = Secp256k1::new();
@ -34,7 +34,7 @@
//! compressed: true, //! compressed: true,
//! key: s.generate_keypair(&mut thread_rng()).1, //! key: s.generate_keypair(&mut thread_rng()).1,
//! }; //! };
//! //!
//! // Generate pay-to-pubkey-hash address //! // Generate pay-to-pubkey-hash address
//! let address = Address::p2pkh(&public_key, Network::Bitcoin); //! let address = Address::p2pkh(&public_key, Network::Bitcoin);
//! } //! }
@ -137,7 +137,6 @@ impl Address {
/// Create a witness pay to script hash address /// Create a witness pay to script hash address
pub fn p2wsh (script: &script::Script, network: Network) -> Address { pub fn p2wsh (script: &script::Script, network: Network) -> Address {
use bitcoin_hashes::sha256; use bitcoin_hashes::sha256;
use bitcoin_hashes::Hash;
Address { Address {
network: network, network: network,
@ -156,8 +155,6 @@ impl Address {
/// This is a segwit address type that looks familiar (as p2sh) to legacy clients /// This is a segwit address type that looks familiar (as p2sh) to legacy clients
pub fn p2shwsh (script: &script::Script, network: Network) -> Address { pub fn p2shwsh (script: &script::Script, network: Network) -> Address {
use bitcoin_hashes::sha256; use bitcoin_hashes::sha256;
use bitcoin_hashes::Hash;
use bitcoin_hashes::hash160;
let ws = script::Builder::new().push_int(0) let ws = script::Builder::new().push_int(0)
.push_slice(&sha256::Hash::hash(&script[..])[..]) .push_slice(&sha256::Hash::hash(&script[..])[..])
@ -430,7 +427,6 @@ mod tests {
assert_eq!(&addr.to_string(), "bc1qvzvkjn4q3nszqxrv3nraga2r822xjty3ykvkuw"); assert_eq!(&addr.to_string(), "bc1qvzvkjn4q3nszqxrv3nraga2r822xjty3ykvkuw");
} }
#[test] #[test]
fn test_p2wsh () { fn test_p2wsh () {
// stolen from Bitcoin transaction 5df912fda4becb1c29e928bec8d64d93e9ba8efa9b5b405bd683c86fd2c65667 // stolen from Bitcoin transaction 5df912fda4becb1c29e928bec8d64d93e9ba8efa9b5b405bd683c86fd2c65667
@ -439,7 +435,6 @@ mod tests {
assert_eq!(&addr.to_string(), "bc1qwqdg6squsna38e46795at95yu9atm8azzmyvckulcc7kytlcckxswvvzej"); assert_eq!(&addr.to_string(), "bc1qwqdg6squsna38e46795at95yu9atm8azzmyvckulcc7kytlcckxswvvzej");
} }
#[test] #[test]
fn test_bip173_vectors() { fn test_bip173_vectors() {
let addrstr = "BC1QW508D6QEJXTDG4Y5R3ZARVARY0C5XW7KV8F3T4"; let addrstr = "BC1QW508D6QEJXTDG4Y5R3ZARVARY0C5XW7KV8F3T4";

43
src/util/merkleblock.rs
View File

@ -57,12 +57,12 @@
//! ``` //! ```
use std::collections::HashSet; use std::collections::HashSet;
use std::io;
use bitcoin_hashes::{sha256d, Hash}; use bitcoin_hashes::{sha256d, Hash};
use blockdata::constants::{MAX_BLOCK_WEIGHT, MIN_TRANSACTION_WEIGHT}; use blockdata::constants::{MAX_BLOCK_WEIGHT, MIN_TRANSACTION_WEIGHT};
use consensus::encode::{Encodable, Error}; use consensus::encode::{self, Decodable, Encodable};
use consensus::{Decodable, Decoder, Encoder};
use util::hash::BitcoinHash; use util::hash::BitcoinHash;
use util::merkleblock::MerkleBlockError::*; use util::merkleblock::MerkleBlockError::*;
use {Block, BlockHeader}; use {Block, BlockHeader};
@ -353,22 +353,25 @@ impl PartialMerkleTree {
} }
} }
impl<S: Encoder> Encodable<S> for PartialMerkleTree { impl Encodable for PartialMerkleTree {
fn consensus_encode(&self, s: &mut S) -> Result<(), Error> { fn consensus_encode<S: io::Write>(
self.num_transactions.consensus_encode(s)?; &self,
self.hashes.consensus_encode(s)?; mut s: S,
) -> Result<usize, encode::Error> {
let ret = self.num_transactions.consensus_encode(&mut s)?
+ self.hashes.consensus_encode(&mut s)?;
let mut bytes: Vec<u8> = vec![0; (self.bits.len() + 7) / 8]; let mut bytes: Vec<u8> = vec![0; (self.bits.len() + 7) / 8];
for p in 0..self.bits.len() { for p in 0..self.bits.len() {
bytes[p / 8] |= (self.bits[p] as u8) << (p % 8) as u8; bytes[p / 8] |= (self.bits[p] as u8) << (p % 8) as u8;
} }
bytes.consensus_encode(s) Ok(ret + bytes.consensus_encode(s)?)
} }
} }
impl<D: Decoder> Decodable<D> for PartialMerkleTree { impl Decodable for PartialMerkleTree {
fn consensus_decode(d: &mut D) -> Result<Self, Error> { fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, encode::Error> {
let num_transactions: u32 = Decodable::consensus_decode(d)?; let num_transactions: u32 = Decodable::consensus_decode(&mut d)?;
let hashes: Vec<sha256d::Hash> = Decodable::consensus_decode(d)?; let hashes: Vec<sha256d::Hash> = Decodable::consensus_decode(&mut d)?;
let bytes: Vec<u8> = Decodable::consensus_decode(d)?; let bytes: Vec<u8> = Decodable::consensus_decode(d)?;
let mut bits: Vec<bool> = vec![false; bytes.len() * 8]; let mut bits: Vec<bool> = vec![false; bytes.len() * 8];
@ -471,17 +474,21 @@ impl MerkleBlock {
} }
} }
impl<S: Encoder> Encodable<S> for MerkleBlock { impl Encodable for MerkleBlock {
fn consensus_encode(&self, s: &mut S) -> Result<(), Error> { fn consensus_encode<S: io::Write>(
self.header.consensus_encode(s)?; &self,
self.txn.consensus_encode(s) mut s: S,
) -> Result<usize, encode::Error> {
let len = self.header.consensus_encode(&mut s)?
+ self.txn.consensus_encode(s)?;
Ok(len)
} }
} }
impl<D: Decoder> Decodable<D> for MerkleBlock { impl Decodable for MerkleBlock {
fn consensus_decode(d: &mut D) -> Result<Self, Error> { fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, encode::Error> {
Ok(MerkleBlock { Ok(MerkleBlock {
header: Decodable::consensus_decode(d)?, header: Decodable::consensus_decode(&mut d)?,
txn: Decodable::consensus_decode(d)?, txn: Decodable::consensus_decode(d)?,
}) })
} }

29
src/util/psbt/macros.rs
View File

@ -14,7 +14,7 @@
#[allow(unused_macros)] #[allow(unused_macros)]
macro_rules! hex_psbt { macro_rules! hex_psbt {
($s:expr) => { ::consensus::encode::deserialize(&::hex::decode($s).unwrap()) }; ($s:expr) => { ::consensus::deserialize(&::hex::decode($s).unwrap()) };
} }
macro_rules! merge { macro_rules! merge {
@ -36,7 +36,7 @@ macro_rules! impl_psbt_deserialize {
($thing:ty) => { ($thing:ty) => {
impl ::util::psbt::serialize::Deserialize for $thing { impl ::util::psbt::serialize::Deserialize for $thing {
fn deserialize(bytes: &[u8]) -> Result<Self, ::consensus::encode::Error> { fn deserialize(bytes: &[u8]) -> Result<Self, ::consensus::encode::Error> {
::consensus::encode::deserialize(&bytes[..]) ::consensus::deserialize(&bytes[..])
} }
} }
}; };
@ -46,7 +46,7 @@ macro_rules! impl_psbt_serialize {
($thing:ty) => { ($thing:ty) => {
impl ::util::psbt::serialize::Serialize for $thing { impl ::util::psbt::serialize::Serialize for $thing {
fn serialize(&self) -> Vec<u8> { fn serialize(&self) -> Vec<u8> {
::consensus::encode::serialize(self) ::consensus::serialize(self)
} }
} }
}; };
@ -54,13 +54,20 @@ macro_rules! impl_psbt_serialize {
macro_rules! impl_psbtmap_consensus_encoding { macro_rules! impl_psbtmap_consensus_encoding {
($thing:ty) => { ($thing:ty) => {
impl<S: ::consensus::encode::Encoder> ::consensus::encode::Encodable<S> for $thing { impl ::consensus::Encodable for $thing {
fn consensus_encode(&self, s: &mut S) -> Result<(), ::consensus::encode::Error> { fn consensus_encode<S: ::std::io::Write>(
&self,
mut s: S,
) -> Result<usize, ::consensus::encode::Error> {
let mut len = 0;
for pair in ::util::psbt::Map::get_pairs(self)? { for pair in ::util::psbt::Map::get_pairs(self)? {
::consensus::encode::Encodable::consensus_encode(&pair, s)? len += ::consensus::Encodable::consensus_encode(
&pair,
&mut s,
)?;
} }
::consensus::encode::Encodable::consensus_encode(&0x00_u8, s) Ok(len + ::consensus::Encodable::consensus_encode(&0x00_u8, s)?)
} }
} }
}; };
@ -68,12 +75,14 @@ macro_rules! impl_psbtmap_consensus_encoding {
macro_rules! impl_psbtmap_consensus_decoding { macro_rules! impl_psbtmap_consensus_decoding {
($thing:ty) => { ($thing:ty) => {
impl<D: ::consensus::encode::Decoder> ::consensus::encode::Decodable<D> for $thing { impl ::consensus::Decodable for $thing {
fn consensus_decode(d: &mut D) -> Result<Self, ::consensus::encode::Error> { fn consensus_decode<D: ::std::io::Read>(
mut d: D,
) -> Result<Self, ::consensus::encode::Error> {
let mut rv: Self = ::std::default::Default::default(); let mut rv: Self = ::std::default::Default::default();
loop { loop {
match ::consensus::encode::Decodable::consensus_decode(d) { match ::consensus::Decodable::consensus_decode(&mut d) {
Ok(pair) => ::util::psbt::Map::insert_pair(&mut rv, pair)?, Ok(pair) => ::util::psbt::Map::insert_pair(&mut rv, pair)?,
Err(::consensus::encode::Error::Psbt(::util::psbt::Error::NoMorePairs)) => return Ok(rv), Err(::consensus::encode::Error::Psbt(::util::psbt::Error::NoMorePairs)) => return Ok(rv),
Err(e) => return Err(e), Err(e) => return Err(e),

10
src/util/psbt/map/global.rs
View File

@ -13,10 +13,10 @@
// //
use std::collections::HashMap; use std::collections::HashMap;
use std::io::Cursor; use std::io::{self, Cursor};
use blockdata::transaction::Transaction; use blockdata::transaction::Transaction;
use consensus::encode::{self, Encodable, Decodable, Decoder}; use consensus::{encode, Encodable, Decodable};
use util::psbt::map::Map; use util::psbt::map::Map;
use util::psbt::raw; use util::psbt::raw;
use util::psbt; use util::psbt;
@ -120,14 +120,14 @@ impl Map for Global {
impl_psbtmap_consensus_encoding!(Global); impl_psbtmap_consensus_encoding!(Global);
impl<D: Decoder> Decodable<D> for Global { impl Decodable for Global {
fn consensus_decode(d: &mut D) -> Result<Self, encode::Error> { fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, encode::Error> {
let mut tx: Option<Transaction> = None; let mut tx: Option<Transaction> = None;
let mut unknowns: HashMap<raw::Key, Vec<u8>> = Default::default(); let mut unknowns: HashMap<raw::Key, Vec<u8>> = Default::default();
loop { loop {
match raw::Pair::consensus_decode(d) { match raw::Pair::consensus_decode(&mut d) {
Ok(pair) => { Ok(pair) => {
match pair.key.type_value { match pair.key.type_value {
0u8 => { 0u8 => {

38
src/util/psbt/mod.rs
View File

@ -20,7 +20,9 @@
use blockdata::script::Script; use blockdata::script::Script;
use blockdata::transaction::Transaction; use blockdata::transaction::Transaction;
use consensus::encode::{self, Encodable, Decodable, Encoder, Decoder}; use consensus::{encode, Encodable, Decodable};
use std::io;
mod error; mod error;
pub use self::error::Error; pub use self::error::Error;
@ -88,39 +90,43 @@ impl PartiallySignedTransaction {
} }
} }
impl<S: Encoder> Encodable<S> for PartiallySignedTransaction { impl Encodable for PartiallySignedTransaction {
fn consensus_encode(&self, s: &mut S) -> Result<(), encode::Error> { fn consensus_encode<S: io::Write>(
b"psbt".consensus_encode(s)?; &self,
mut s: S,
) -> Result<usize, encode::Error> {
let mut len = 0;
len += b"psbt".consensus_encode(&mut s)?;
0xff_u8.consensus_encode(s)?; len += 0xff_u8.consensus_encode(&mut s)?;
self.global.consensus_encode(s)?; len += self.global.consensus_encode(&mut s)?;
for i in &self.inputs { for i in &self.inputs {
i.consensus_encode(s)?; len += i.consensus_encode(&mut s)?;
} }
for i in &self.outputs { for i in &self.outputs {
i.consensus_encode(s)?; len += i.consensus_encode(&mut s)?;
} }
Ok(()) Ok(len)
} }
} }
impl<D: Decoder> Decodable<D> for PartiallySignedTransaction { impl Decodable for PartiallySignedTransaction {
fn consensus_decode(d: &mut D) -> Result<Self, encode::Error> { fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, encode::Error> {
let magic: [u8; 4] = Decodable::consensus_decode(d)?; let magic: [u8; 4] = Decodable::consensus_decode(&mut d)?;
if *b"psbt" != magic { if *b"psbt" != magic {
return Err(Error::InvalidMagic.into()); return Err(Error::InvalidMagic.into());
} }
if 0xff_u8 != u8::consensus_decode(d)? { if 0xff_u8 != u8::consensus_decode(&mut d)? {
return Err(Error::InvalidSeparator.into()); return Err(Error::InvalidSeparator.into());
} }
let global: Global = Decodable::consensus_decode(d)?; let global: Global = Decodable::consensus_decode(&mut d)?;
let inputs: Vec<Input> = { let inputs: Vec<Input> = {
let inputs_len: usize = (&global.unsigned_tx.input).len(); let inputs_len: usize = (&global.unsigned_tx.input).len();
@ -128,7 +134,7 @@ impl<D: Decoder> Decodable<D> for PartiallySignedTransaction {
let mut inputs: Vec<Input> = Vec::with_capacity(inputs_len); let mut inputs: Vec<Input> = Vec::with_capacity(inputs_len);
for _ in 0..inputs_len { for _ in 0..inputs_len {
inputs.push(Decodable::consensus_decode(d)?); inputs.push(Decodable::consensus_decode(&mut d)?);
} }
inputs inputs
@ -140,7 +146,7 @@ impl<D: Decoder> Decodable<D> for PartiallySignedTransaction {
let mut outputs: Vec<Output> = Vec::with_capacity(outputs_len); let mut outputs: Vec<Output> = Vec::with_capacity(outputs_len);
for _ in 0..outputs_len { for _ in 0..outputs_len {
outputs.push(Decodable::consensus_decode(d)?); outputs.push(Decodable::consensus_decode(&mut d)?);
} }
outputs outputs

62
src/util/psbt/raw.rs
View File

@ -17,10 +17,9 @@
//! Raw PSBT key-value pairs as defined at //! Raw PSBT key-value pairs as defined at
//! https://github.com/bitcoin/bips/blob/master/bip-0174.mediawiki. //! https://github.com/bitcoin/bips/blob/master/bip-0174.mediawiki.
use std::fmt; use std::{fmt, io};
use consensus::encode::{Decodable, Encodable, VarInt, MAX_VEC_SIZE}; use consensus::encode::{self, Decodable, Encodable, VarInt, MAX_VEC_SIZE};
use consensus::encode::{self, Decoder, Encoder};
use util::psbt::Error; use util::psbt::Error;
/// A PSBT key in its raw byte form. /// A PSBT key in its raw byte form.
@ -43,15 +42,18 @@ pub struct Pair {
impl fmt::Display for Key { impl fmt::Display for Key {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
use hex; write!(
f,
write!(f, "type: {:#x}, key: {}", self.type_value, hex::encode(&self.key)) "type: {:#x}, key: {}",
self.type_value,
::hex::encode(&self.key)
)
} }
} }
impl<D: Decoder> Decodable<D> for Key { impl Decodable for Key {
fn consensus_decode(d: &mut D) -> Result<Self, encode::Error> { fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, encode::Error> {
let VarInt(byte_size): VarInt = Decodable::consensus_decode(d)?; let VarInt(byte_size): VarInt = Decodable::consensus_decode(&mut d)?;
if byte_size == 0 { if byte_size == 0 {
return Err(Error::NoMorePairs.into()); return Err(Error::NoMorePairs.into());
@ -60,14 +62,17 @@ impl<D: Decoder> Decodable<D> for Key {
let key_byte_size: u64 = byte_size - 1; let key_byte_size: u64 = byte_size - 1;
if key_byte_size > MAX_VEC_SIZE as u64 { if key_byte_size > MAX_VEC_SIZE as u64 {
return Err(encode::Error::OversizedVectorAllocation { requested: key_byte_size as usize, max: MAX_VEC_SIZE } ) return Err(encode::Error::OversizedVectorAllocation {
requested: key_byte_size as usize,
max: MAX_VEC_SIZE,
})
} }
let type_value: u8 = Decodable::consensus_decode(d)?; let type_value: u8 = Decodable::consensus_decode(&mut d)?;
let mut key = Vec::with_capacity(key_byte_size as usize); let mut key = Vec::with_capacity(key_byte_size as usize);
for _ in 0..key_byte_size { for _ in 0..key_byte_size {
key.push(Decodable::consensus_decode(d)?); key.push(Decodable::consensus_decode(&mut d)?);
} }
Ok(Key { Ok(Key {
@ -77,31 +82,38 @@ impl<D: Decoder> Decodable<D> for Key {
} }
} }
impl<S: Encoder> Encodable<S> for Key { impl Encodable for Key {
fn consensus_encode(&self, s: &mut S) -> Result<(), encode::Error> { fn consensus_encode<S: io::Write>(
VarInt((self.key.len() + 1) as u64).consensus_encode(s)?; &self,
mut s: S,
) -> Result<usize, encode::Error> {
let mut len = 0;
len += VarInt((self.key.len() + 1) as u64).consensus_encode(&mut s)?;
self.type_value.consensus_encode(s)?; len += self.type_value.consensus_encode(&mut s)?;
for key in &self.key { for key in &self.key {
key.consensus_encode(s)? len += key.consensus_encode(&mut s)?
} }
Ok(()) Ok(len)
} }
} }
impl<S: Encoder> Encodable<S> for Pair { impl Encodable for Pair {
fn consensus_encode(&self, s: &mut S) -> Result<(), encode::Error> { fn consensus_encode<S: io::Write>(
self.key.consensus_encode(s)?; &self,
self.value.consensus_encode(s) mut s: S,
) -> Result<usize, encode::Error> {
let len = self.key.consensus_encode(&mut s)?;
Ok(len + self.value.consensus_encode(s)?)
} }
} }
impl<D: Decoder> Decodable<D> for Pair { impl Decodable for Pair {
fn consensus_decode(d: &mut D) -> Result<Self, encode::Error> { fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, encode::Error> {
Ok(Pair { Ok(Pair {
key: Decodable::consensus_decode(d)?, key: Decodable::consensus_decode(&mut d)?,
value: Decodable::consensus_decode(d)?, value: Decodable::consensus_decode(d)?,
}) })
} }

16
src/util/psbt/serialize.rs
View File

@ -17,7 +17,7 @@
//! Defines traits used for (de)serializing PSBT values into/from raw //! Defines traits used for (de)serializing PSBT values into/from raw
//! bytes in PSBT key-value pairs. //! bytes in PSBT key-value pairs.
use std::io::{self, Cursor}; use std::io;
use blockdata::script::Script; use blockdata::script::Script;
use blockdata::transaction::{SigHashType, Transaction, TxOut}; use blockdata::transaction::{SigHashType, Transaction, TxOut};
@ -93,16 +93,10 @@ impl Deserialize for (Fingerprint, DerivationPath) {
let fprint: Fingerprint = Fingerprint::from(&bytes[0..4]); let fprint: Fingerprint = Fingerprint::from(&bytes[0..4]);
let mut dpath: Vec<ChildNumber> = Default::default(); let mut dpath: Vec<ChildNumber> = Default::default();
let d = &mut Cursor::new(&bytes[4..]); let mut d = &bytes[4..];
loop { while !d.is_empty() {
match Decodable::consensus_decode(d) { match u32::consensus_decode(&mut d) {
Ok(index) => { Ok(index) => dpath.push(index.into()),
dpath.push(<ChildNumber as From<u32>>::from(index));
if d.position() == (bytes.len() - 4) as u64 {
break;
}
},
Err(e) => return Err(e), Err(e) => return Err(e),
} }
} }

26
src/util/uint.rs
View File

@ -336,21 +336,29 @@ macro_rules! construct_uint {
} }
} }
impl<S: ::consensus::encode::Encoder> ::consensus::encode::Encodable<S> for $name { impl ::consensus::Encodable for $name {
#[inline] #[inline]
fn consensus_encode(&self, s: &mut S) -> Result<(), encode::Error> { fn consensus_encode<S: ::std::io::Write>(
&self,
mut s: S,
) -> Result<usize, encode::Error> {
let &$name(ref data) = self; let &$name(ref data) = self;
for word in data.iter() { word.consensus_encode(s)?; } let mut len = 0;
Ok(()) for word in data.iter() {
len += word.consensus_encode(&mut s)?;
}
Ok(len)
} }
} }
impl<D: ::consensus::encode::Decoder> ::consensus::encode::Decodable<D> for $name { impl ::consensus::Decodable for $name {
fn consensus_decode(d: &mut D) -> Result<$name, encode::Error> { fn consensus_decode<D: ::std::io::Read>(
use consensus::encode::Decodable; mut d: D,
) -> Result<$name, encode::Error> {
use consensus::Decodable;
let mut ret: [u64; $n_words] = [0; $n_words]; let mut ret: [u64; $n_words] = [0; $n_words];
for i in 0..$n_words { for i in 0..$n_words {
ret[i] = Decodable::consensus_decode(d)?; ret[i] = Decodable::consensus_decode(&mut d)?;
} }
Ok($name(ret)) Ok($name(ret))
} }
@ -388,7 +396,7 @@ impl Uint256 {
#[cfg(test)] #[cfg(test)]
mod tests { mod tests {
use consensus::encode::{deserialize, serialize}; use consensus::{deserialize, serialize};
use util::uint::Uint256; use util::uint::Uint256;
use util::BitArray; use util::BitArray;