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Merge pull request #1094 from ethcore/seal_fields_fix

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fixed incorrect decoding of header seal_fields. added tests. #1090
This commit is contained in:
Marek Kotewicz 2016-05-17 11:47:07 +02:00
commit dcc695dda5
2 changed files with 56 additions and 6 deletions
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36
ethcore/src/header.rs
View File

@ -61,7 +61,7 @@ pub struct Header {
/// Block difficulty.
pub difficulty: U256,
/// Block seal.
/// Vector of post-RLP-encoded fields.
pub seal: Vec<Bytes>,
/// The memoized hash of the RLP representation *including* the seal fields.
@ -201,7 +201,7 @@ impl Header {
*self.bare_hash.borrow_mut() = None;
}
// TODO: make these functions traity
// TODO: make these functions traity
/// Place this header into an RLP stream `s`, optionally `with_seal`.
pub fn stream_rlp(&self, s: &mut RlpStream, with_seal: Seal) {
s.begin_list(13 + match with_seal { Seal::With => self.seal.len(), _ => 0 });
@ -219,8 +219,8 @@ impl Header {
s.append(&self.timestamp);
s.append(&self.extra_data);
if let Seal::With = with_seal {
for b in &self.seal {
s.append_raw(&b, 1);
for b in &self.seal {
s.append_raw(&b, 1);
}
}
}
@ -275,4 +275,32 @@ impl Encodable for Header {
#[cfg(test)]
mod tests {
use rustc_serialize::hex::FromHex;
use util::rlp::{decode, encode};
use super::Header;
#[test]
fn test_header_seal_fields() {
// that's rlp of block header created with ethash engine.
let header_rlp = "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".from_hex().unwrap();
let mix_hash = "a0a0349d8c3df71f1a48a9df7d03fd5f14aeee7d91332c009ecaff0a71ead405bd".from_hex().unwrap();
let nonce = "88ab4e252a7e8c2a23".from_hex().unwrap();
let header: Header = decode(&header_rlp);
let seal_fields = header.seal;
assert_eq!(seal_fields.len(), 2);
assert_eq!(seal_fields[0], mix_hash);
assert_eq!(seal_fields[1], nonce);
}
#[test]
fn decode_and_encode_header() {
// that's rlp of block header created with ethash engine.
let header_rlp = "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".from_hex().unwrap();
let header: Header = decode(&header_rlp);
let encoded_header = encode(&header).to_vec();
assert_eq!(header_rlp, encoded_header);
}
}

26
ethcore/src/views.rs
View File

@ -301,11 +301,11 @@ impl<'a> HeaderView<'a> {
/// Returns block extra data.
pub fn extra_data(&self) -> Bytes { self.rlp.val_at(12) }
/// Returns block seal.
/// Returns a vector of post-RLP-encoded seal fields.
pub fn seal(&self) -> Vec<Bytes> {
let mut seal = vec![];
for i in 13..self.rlp.item_count() {
seal.push(self.rlp.val_at(i));
seal.push(self.rlp.at(i).as_raw().to_vec());
}
seal
}
@ -316,3 +316,25 @@ impl<'a> Hashable for HeaderView<'a> {
self.rlp.as_raw().sha3()
}
}
#[cfg(test)]
mod tests {
use rustc_serialize::hex::FromHex;
use util::rlp::View;
use super::BlockView;
#[test]
fn test_header_view_seal_fields() {
// that's rlp of block created with ethash engine.
let block_rlp = "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".from_hex().unwrap();
let mix_hash = "a0a0349d8c3df71f1a48a9df7d03fd5f14aeee7d91332c009ecaff0a71ead405bd".from_hex().unwrap();
let nonce = "88ab4e252a7e8c2a23".from_hex().unwrap();
let block_view = BlockView::new(&block_rlp);
let header_view = block_view.header_view();
let seal_fields = header_view.seal();
assert_eq!(seal_fields.len(), 2);
assert_eq!(seal_fields[0], mix_hash);
assert_eq!(seal_fields[1], nonce);
}
}