mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-05-30 16:21:02 +00:00
Merge commit 'e5bed7ac380b6adb54b60a2a72a2a8f07f50d6c1' as 'bridges'
This commit is contained in:
Hernando Castano
@@ -0,0 +1,28 @@
|
||||
[package]
|
||||
name = "ethereum-contract-builtin"
|
||||
description = "Small crate that helps Solidity contract to verify finality proof."
|
||||
version = "0.1.0"
|
||||
authors = ["Parity Technologies <admin@parity.io>"]
|
||||
edition = "2018"
|
||||
license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
|
||||
|
||||
[dependencies]
|
||||
codec = { package = "parity-scale-codec", version = "2.0.0" }
|
||||
ethereum-types = "0.11.0"
|
||||
finality-grandpa = "0.14.0"
|
||||
hex = "0.4"
|
||||
log = "0.4.14"
|
||||
|
||||
# Runtime/chain specific dependencies
|
||||
|
||||
rialto-runtime = { path = "../../bin/rialto/runtime" }
|
||||
|
||||
# Substrate Dependencies
|
||||
|
||||
sc-finality-grandpa = { git = "https://github.com/paritytech/substrate", branch = "master" }
|
||||
sp-blockchain = { git = "https://github.com/paritytech/substrate", branch = "master" }
|
||||
sp-finality-grandpa = { git = "https://github.com/paritytech/substrate", branch = "master" }
|
||||
sp-runtime = { git = "https://github.com/paritytech/substrate", branch = "master" }
|
||||
|
||||
[dev-dependencies]
|
||||
sp-core = { git = "https://github.com/paritytech/substrate", branch = "master" }
|
||||
@@ -0,0 +1,374 @@
|
||||
// Copyright 2019-2021 Parity Technologies (UK) Ltd.
|
||||
// This file is part of Parity Bridges Common.
|
||||
|
||||
// Parity Bridges Common is free software: you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation, either version 3 of the License, or
|
||||
// (at your option) any later version.
|
||||
|
||||
// Parity Bridges Common is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
|
||||
// You should have received a copy of the GNU General Public License
|
||||
// along with Parity Bridges Common. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
use codec::{Decode, Encode};
|
||||
use ethereum_types::U256;
|
||||
use finality_grandpa::voter_set::VoterSet;
|
||||
use rialto_runtime::{Block, BlockNumber, Hash, Header as RuntimeHeader};
|
||||
use sp_blockchain::Error as ClientError;
|
||||
use sp_finality_grandpa::{AuthorityList, ConsensusLog, GRANDPA_ENGINE_ID};
|
||||
|
||||
/// Builtin errors.
|
||||
#[derive(Debug)]
|
||||
pub enum Error {
|
||||
/// Failed to decode block number.
|
||||
BlockNumberDecode,
|
||||
/// Failed to decode Substrate header.
|
||||
HeaderDecode(codec::Error),
|
||||
/// Failed to decode best voters set.
|
||||
BestSetDecode(codec::Error),
|
||||
/// Best voters set is invalid.
|
||||
InvalidBestSet,
|
||||
/// Failed to decode finality proof.
|
||||
FinalityProofDecode(codec::Error),
|
||||
/// Failed to verify justification.
|
||||
JustificationVerify(Box<ClientError>),
|
||||
}
|
||||
|
||||
/// Substrate header.
|
||||
#[derive(Debug, PartialEq)]
|
||||
pub struct Header {
|
||||
/// Header hash.
|
||||
pub hash: Hash,
|
||||
/// Parent header hash.
|
||||
pub parent_hash: Hash,
|
||||
/// Header number.
|
||||
pub number: BlockNumber,
|
||||
/// GRANDPA validators change signal.
|
||||
pub signal: Option<ValidatorsSetSignal>,
|
||||
}
|
||||
|
||||
/// GRANDPA validators set change signal.
|
||||
#[derive(Debug, PartialEq)]
|
||||
pub struct ValidatorsSetSignal {
|
||||
/// Signal delay.
|
||||
pub delay: BlockNumber,
|
||||
/// New validators set.
|
||||
pub validators: Vec<u8>,
|
||||
}
|
||||
|
||||
/// Convert from U256 to BlockNumber. Fails if `U256` value isn't fitting within `BlockNumber`
|
||||
/// limits (the runtime referenced by this module uses u32 as `BlockNumber`).
|
||||
pub fn to_substrate_block_number(number: U256) -> Result<BlockNumber, Error> {
|
||||
let substrate_block_number = match number == number.low_u32().into() {
|
||||
true => Ok(number.low_u32()),
|
||||
false => Err(Error::BlockNumberDecode),
|
||||
};
|
||||
|
||||
log::trace!(
|
||||
target: "bridge-builtin",
|
||||
"Parsed Substrate block number from {}: {:?}",
|
||||
number,
|
||||
substrate_block_number,
|
||||
);
|
||||
|
||||
substrate_block_number
|
||||
}
|
||||
|
||||
/// Convert from BlockNumber to U256.
|
||||
pub fn from_substrate_block_number(number: BlockNumber) -> Result<U256, Error> {
|
||||
Ok(U256::from(number as u64))
|
||||
}
|
||||
|
||||
/// Parse Substrate header.
|
||||
pub fn parse_substrate_header(raw_header: &[u8]) -> Result<Header, Error> {
|
||||
let substrate_header = RuntimeHeader::decode(&mut &*raw_header)
|
||||
.map(|header| Header {
|
||||
hash: header.hash(),
|
||||
parent_hash: header.parent_hash,
|
||||
number: header.number,
|
||||
signal: sp_runtime::traits::Header::digest(&header)
|
||||
.log(|log| {
|
||||
log.as_consensus().and_then(|(engine_id, log)| {
|
||||
if engine_id == GRANDPA_ENGINE_ID {
|
||||
Some(log)
|
||||
} else {
|
||||
None
|
||||
}
|
||||
})
|
||||
})
|
||||
.and_then(|log| ConsensusLog::decode(&mut &*log).ok())
|
||||
.and_then(|log| match log {
|
||||
ConsensusLog::ScheduledChange(scheduled_change) => Some(ValidatorsSetSignal {
|
||||
delay: scheduled_change.delay,
|
||||
validators: scheduled_change.next_authorities.encode(),
|
||||
}),
|
||||
_ => None,
|
||||
}),
|
||||
})
|
||||
.map_err(Error::HeaderDecode);
|
||||
|
||||
log::debug!(
|
||||
target: "bridge-builtin",
|
||||
"Parsed Substrate header {}: {:?}",
|
||||
if substrate_header.is_ok() {
|
||||
format!("<{}-bytes-blob>", raw_header.len())
|
||||
} else {
|
||||
hex::encode(raw_header)
|
||||
},
|
||||
substrate_header,
|
||||
);
|
||||
|
||||
substrate_header
|
||||
}
|
||||
|
||||
/// Verify GRANDPA finality proof.
|
||||
pub fn verify_substrate_finality_proof(
|
||||
finality_target_number: BlockNumber,
|
||||
finality_target_hash: Hash,
|
||||
best_set_id: u64,
|
||||
raw_best_set: &[u8],
|
||||
raw_finality_proof: &[u8],
|
||||
) -> Result<(), Error> {
|
||||
let best_set = AuthorityList::decode(&mut &*raw_best_set)
|
||||
.map_err(Error::BestSetDecode)
|
||||
.and_then(|authorities| VoterSet::new(authorities.into_iter()).ok_or(Error::InvalidBestSet));
|
||||
|
||||
log::debug!(
|
||||
target: "bridge-builtin",
|
||||
"Parsed Substrate authorities set {}: {:?}",
|
||||
if best_set.is_ok() {
|
||||
format!("<{}-bytes-blob>", raw_best_set.len())
|
||||
} else {
|
||||
hex::encode(raw_best_set)
|
||||
},
|
||||
best_set,
|
||||
);
|
||||
|
||||
let best_set = best_set?;
|
||||
|
||||
let verify_result = sc_finality_grandpa::GrandpaJustification::<Block>::decode_and_verify_finalizes(
|
||||
&raw_finality_proof,
|
||||
(finality_target_hash, finality_target_number),
|
||||
best_set_id,
|
||||
&best_set,
|
||||
)
|
||||
.map_err(Box::new)
|
||||
.map_err(Error::JustificationVerify)
|
||||
.map(|_| ());
|
||||
|
||||
log::debug!(
|
||||
target: "bridge-builtin",
|
||||
"Verified Substrate finality proof {}: {:?}",
|
||||
if verify_result.is_ok() {
|
||||
format!("<{}-bytes-blob>", raw_finality_proof.len())
|
||||
} else {
|
||||
hex::encode(raw_finality_proof)
|
||||
},
|
||||
verify_result,
|
||||
);
|
||||
|
||||
verify_result
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
use rialto_runtime::DigestItem;
|
||||
use sp_core::crypto::Public;
|
||||
use sp_finality_grandpa::{AuthorityId, ScheduledChange};
|
||||
use sp_runtime::generic::Digest;
|
||||
|
||||
#[test]
|
||||
fn to_substrate_block_number_succeeds() {
|
||||
assert_eq!(to_substrate_block_number(U256::zero()).unwrap(), 0);
|
||||
assert_eq!(
|
||||
to_substrate_block_number(U256::from(std::u32::MAX as u64)).unwrap(),
|
||||
0xFFFFFFFF
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn to_substrate_block_number_fails() {
|
||||
assert!(matches!(
|
||||
to_substrate_block_number(U256::from(std::u32::MAX as u64 + 1)),
|
||||
Err(Error::BlockNumberDecode)
|
||||
));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn from_substrate_block_number_succeeds() {
|
||||
assert_eq!(from_substrate_block_number(0).unwrap(), U256::zero());
|
||||
assert_eq!(
|
||||
from_substrate_block_number(std::u32::MAX).unwrap(),
|
||||
U256::from(std::u32::MAX)
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn substrate_header_without_signal_parsed() {
|
||||
let raw_header = RuntimeHeader {
|
||||
parent_hash: [0u8; 32].into(),
|
||||
number: 0,
|
||||
state_root: "b2fc47904df5e355c6ab476d89fbc0733aeddbe302f0b94ba4eea9283f7e89e7"
|
||||
.parse()
|
||||
.unwrap(),
|
||||
extrinsics_root: "03170a2e7597b7b7e3d84c05391d139a62b157e78786d8c082f29dcf4c111314"
|
||||
.parse()
|
||||
.unwrap(),
|
||||
digest: Default::default(),
|
||||
}
|
||||
.encode();
|
||||
assert_eq!(
|
||||
raw_header,
|
||||
hex::decode("000000000000000000000000000000000000000000000000000000000000000000b2fc47904df5e355c6ab476d89fbc0733aeddbe302f0b94ba4eea9283f7e89e703170a2e7597b7b7e3d84c05391d139a62b157e78786d8c082f29dcf4c11131400").unwrap(),
|
||||
);
|
||||
|
||||
assert_eq!(
|
||||
parse_substrate_header(&raw_header).unwrap(),
|
||||
Header {
|
||||
hash: "afbbeb92bf6ff14f60bdef0aa89f043dd403659ae82665238810ace0d761f6d0"
|
||||
.parse()
|
||||
.unwrap(),
|
||||
parent_hash: Default::default(),
|
||||
number: 0,
|
||||
signal: None,
|
||||
},
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn substrate_header_with_signal_parsed() {
|
||||
let authorities = vec![
|
||||
(AuthorityId::from_slice(&[1; 32]), 101),
|
||||
(AuthorityId::from_slice(&[3; 32]), 103),
|
||||
];
|
||||
let mut digest = Digest::default();
|
||||
digest.push(DigestItem::Consensus(
|
||||
GRANDPA_ENGINE_ID,
|
||||
ConsensusLog::ScheduledChange(ScheduledChange {
|
||||
next_authorities: authorities.clone(),
|
||||
delay: 8,
|
||||
})
|
||||
.encode(),
|
||||
));
|
||||
|
||||
let raw_header = RuntimeHeader {
|
||||
parent_hash: "c0ac300d4005141ea690f3df593e049739c227316eb7f05052f3ee077388b68b"
|
||||
.parse()
|
||||
.unwrap(),
|
||||
number: 8,
|
||||
state_root: "822d6b412033aa9ac8e1722918eec5f25633529225754b3d4149982f5cacd4aa"
|
||||
.parse()
|
||||
.unwrap(),
|
||||
extrinsics_root: "e7b07c0ce2799416ce7877b9cefc7f596bea5e8813bb2a0abf760414073ca928"
|
||||
.parse()
|
||||
.unwrap(),
|
||||
digest,
|
||||
}
|
||||
.encode();
|
||||
assert_eq!(
|
||||
raw_header,
|
||||
hex::decode("c0ac300d4005141ea690f3df593e049739c227316eb7f05052f3ee077388b68b20822d6b412033aa9ac8e1722918eec5f25633529225754b3d4149982f5cacd4aae7b07c0ce2799416ce7877b9cefc7f596bea5e8813bb2a0abf760414073ca928040446524e4b59010108010101010101010101010101010101010101010101010101010101010101010165000000000000000303030303030303030303030303030303030303030303030303030303030303670000000000000008000000").unwrap(),
|
||||
);
|
||||
|
||||
assert_eq!(
|
||||
parse_substrate_header(&raw_header).unwrap(),
|
||||
Header {
|
||||
hash: "3dfebb280bd87a4640f89d7f2adecd62b88148747bff5b63af6e1634ee37a56e"
|
||||
.parse()
|
||||
.unwrap(),
|
||||
parent_hash: "c0ac300d4005141ea690f3df593e049739c227316eb7f05052f3ee077388b68b"
|
||||
.parse()
|
||||
.unwrap(),
|
||||
number: 8,
|
||||
signal: Some(ValidatorsSetSignal {
|
||||
delay: 8,
|
||||
validators: authorities.encode(),
|
||||
}),
|
||||
},
|
||||
);
|
||||
}
|
||||
|
||||
/// Number of the example block with justification.
|
||||
const EXAMPLE_JUSTIFIED_BLOCK_NUMBER: u32 = 8;
|
||||
/// Hash of the example block with justification.
|
||||
const EXAMPLE_JUSTIFIED_BLOCK_HASH: &str = "a2f45892db86b2ad133ce57d81b7e4375bb7035ce9883e6b68c358164f343775";
|
||||
/// Id of authorities set that have generated example justification. Could be computed by tracking
|
||||
/// every set change in canonized headers.
|
||||
const EXAMPLE_AUTHORITIES_SET_ID: u64 = 0;
|
||||
/// Encoded authorities set that has generated example justification. Could be fetched from `ScheduledChange`
|
||||
/// digest of the block that has scheduled this set OR by calling `GrandpaApi::grandpa_authorities()` at
|
||||
/// appropriate block.
|
||||
const EXAMPLE_AUTHORITIES_SET: &str = "1488dc3417d5058ec4b4503e0c12ea1a0a89be200fe98922423d4334014fa6b0ee0100000000000000d17c2d7823ebf260fd138f2d7e27d114c0145d968b5ff5006125f2414fadae690100000000000000439660b36c6c03afafca027b910b4fecf99801834c62a5e6006f27d978de234f01000000000000005e639b43e0052c47447dac87d6fd2b6ec50bdd4d0f614e4299c665249bbd09d901000000000000001dfe3e22cc0d45c70779c1095f7489a8ef3cf52d62fbd8c2fa38c9f1723502b50100000000000000";
|
||||
/// Example justification. Could be fetched by calling 'chain_getBlock' RPC.
|
||||
const EXAMPLE_JUSTIFICATION: &str = "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";
|
||||
|
||||
#[test]
|
||||
fn substrate_header_parse_fails() {
|
||||
assert!(matches!(parse_substrate_header(&[]), Err(_)));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn verify_substrate_finality_proof_succeeds() {
|
||||
verify_substrate_finality_proof(
|
||||
EXAMPLE_JUSTIFIED_BLOCK_NUMBER,
|
||||
EXAMPLE_JUSTIFIED_BLOCK_HASH.parse().unwrap(),
|
||||
EXAMPLE_AUTHORITIES_SET_ID,
|
||||
&hex::decode(EXAMPLE_AUTHORITIES_SET).unwrap(),
|
||||
&hex::decode(EXAMPLE_JUSTIFICATION).unwrap(),
|
||||
)
|
||||
.unwrap();
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn verify_substrate_finality_proof_fails_when_wrong_block_is_finalized() {
|
||||
verify_substrate_finality_proof(
|
||||
4,
|
||||
Default::default(),
|
||||
EXAMPLE_AUTHORITIES_SET_ID,
|
||||
&hex::decode(EXAMPLE_AUTHORITIES_SET).unwrap(),
|
||||
&hex::decode(EXAMPLE_JUSTIFICATION).unwrap(),
|
||||
)
|
||||
.unwrap_err();
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn verify_substrate_finality_proof_fails_when_wrong_set_is_provided() {
|
||||
verify_substrate_finality_proof(
|
||||
EXAMPLE_JUSTIFIED_BLOCK_NUMBER,
|
||||
EXAMPLE_JUSTIFIED_BLOCK_HASH.parse().unwrap(),
|
||||
EXAMPLE_AUTHORITIES_SET_ID,
|
||||
&hex::decode("deadbeef").unwrap(),
|
||||
&hex::decode(EXAMPLE_JUSTIFICATION).unwrap(),
|
||||
)
|
||||
.unwrap_err();
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn verify_substrate_finality_proof_fails_when_wrong_set_id_is_provided() {
|
||||
verify_substrate_finality_proof(
|
||||
EXAMPLE_JUSTIFIED_BLOCK_NUMBER,
|
||||
EXAMPLE_JUSTIFIED_BLOCK_HASH.parse().unwrap(),
|
||||
42,
|
||||
&hex::decode(EXAMPLE_AUTHORITIES_SET).unwrap(),
|
||||
&hex::decode(EXAMPLE_JUSTIFICATION).unwrap(),
|
||||
)
|
||||
.unwrap_err();
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn verify_substrate_finality_proof_fails_when_wrong_proof_is_provided() {
|
||||
verify_substrate_finality_proof(
|
||||
EXAMPLE_JUSTIFIED_BLOCK_NUMBER,
|
||||
EXAMPLE_JUSTIFIED_BLOCK_HASH.parse().unwrap(),
|
||||
0,
|
||||
&hex::decode(EXAMPLE_AUTHORITIES_SET).unwrap(),
|
||||
&hex::decode("deadbeef").unwrap(),
|
||||
)
|
||||
.unwrap_err();
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user