openethereum/ethcore/src/verification/verification.rs
Tomasz Drwięga 9f775a7673 Remove RefCell from Header (#8227)
* Cache RLP and header hashes.

* Refactor header - WiP

* Avoid decoding laster header.

* Pre-compute hashes for Sealed/Locked block.

* Use accrue bloom. Closes ##8241
2018-04-03 17:01:28 +09:00

757 lines
28 KiB
Rust

// Copyright 2015-2017 Parity Technologies (UK) Ltd.
// This file is part of Parity.
// Parity 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 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. If not, see <http://www.gnu.org/licenses/>.
//! Block and transaction verification functions
//!
//! Block verification is done in 3 steps
//! 1. Quick verification upon adding to the block queue
//! 2. Signatures verification done in the queue.
//! 3. Final verification against the blockchain done before enactment.
use std::collections::HashSet;
use std::time::{SystemTime, UNIX_EPOCH};
use bytes::Bytes;
use ethereum_types::{H256, U256};
use hash::keccak;
use heapsize::HeapSizeOf;
use rlp::UntrustedRlp;
use triehash::ordered_trie_root;
use unexpected::{Mismatch, OutOfBounds};
use blockchain::*;
use client::{BlockInfo, CallContract};
use engines::EthEngine;
use error::{BlockError, Error};
use header::{BlockNumber, Header};
use transaction::{SignedTransaction, UnverifiedTransaction};
use views::BlockView;
/// Preprocessed block data gathered in `verify_block_unordered` call
pub struct PreverifiedBlock {
/// Populated block header
pub header: Header,
/// Populated block transactions
pub transactions: Vec<SignedTransaction>,
/// Block bytes
pub bytes: Bytes,
}
impl HeapSizeOf for PreverifiedBlock {
fn heap_size_of_children(&self) -> usize {
self.header.heap_size_of_children()
+ self.transactions.heap_size_of_children()
+ self.bytes.heap_size_of_children()
}
}
/// Phase 1 quick block verification. Only does checks that are cheap. Operates on a single block
pub fn verify_block_basic(header: &Header, bytes: &[u8], engine: &EthEngine) -> Result<(), Error> {
verify_header_params(&header, engine, true)?;
verify_block_integrity(bytes, &header.transactions_root(), &header.uncles_hash())?;
engine.verify_block_basic(&header)?;
for u in UntrustedRlp::new(bytes).at(2)?.iter().map(|rlp| rlp.as_val::<Header>()) {
let u = u?;
verify_header_params(&u, engine, false)?;
engine.verify_block_basic(&u)?;
}
for t in UntrustedRlp::new(bytes).at(1)?.iter().map(|rlp| rlp.as_val::<UnverifiedTransaction>()) {
engine.verify_transaction_basic(&t?, &header)?;
}
Ok(())
}
/// Phase 2 verification. Perform costly checks such as transaction signatures and block nonce for ethash.
/// Still operates on a individual block
/// Returns a `PreverifiedBlock` structure populated with transactions
pub fn verify_block_unordered(header: Header, bytes: Bytes, engine: &EthEngine, check_seal: bool) -> Result<PreverifiedBlock, Error> {
if check_seal {
engine.verify_block_unordered(&header)?;
for u in UntrustedRlp::new(&bytes).at(2)?.iter().map(|rlp| rlp.as_val::<Header>()) {
engine.verify_block_unordered(&u?)?;
}
}
// Verify transactions.
let mut transactions = Vec::new();
let nonce_cap = if header.number() >= engine.params().dust_protection_transition {
Some((engine.params().nonce_cap_increment * header.number()).into())
} else { None };
{
let v = BlockView::new(&bytes);
for t in v.transactions() {
let t = engine.verify_transaction_unordered(t, &header)?;
if let Some(max_nonce) = nonce_cap {
if t.nonce >= max_nonce {
return Err(BlockError::TooManyTransactions(t.sender()).into());
}
}
transactions.push(t);
}
}
Ok(PreverifiedBlock {
header: header,
transactions: transactions,
bytes: bytes,
})
}
/// Parameters for full verification of block family
pub struct FullFamilyParams<'a, C: BlockInfo + CallContract + 'a> {
/// Serialized block bytes
pub block_bytes: &'a [u8],
/// Signed transactions
pub transactions: &'a [SignedTransaction],
/// Block provider to use during verification
pub block_provider: &'a BlockProvider,
/// Engine client to use during verification
pub client: &'a C,
}
/// Phase 3 verification. Check block information against parent and uncles.
pub fn verify_block_family<C: BlockInfo + CallContract>(header: &Header, parent: &Header, engine: &EthEngine, do_full: Option<FullFamilyParams<C>>) -> Result<(), Error> {
// TODO: verify timestamp
verify_parent(&header, &parent, engine.params().gas_limit_bound_divisor)?;
engine.verify_block_family(&header, &parent)?;
let params = match do_full {
Some(x) => x,
None => return Ok(()),
};
verify_uncles(header, params.block_bytes, params.block_provider, engine)?;
for transaction in params.transactions {
engine.machine().verify_transaction(transaction, header, params.client)?;
}
Ok(())
}
fn verify_uncles(header: &Header, bytes: &[u8], bc: &BlockProvider, engine: &EthEngine) -> Result<(), Error> {
let num_uncles = UntrustedRlp::new(bytes).at(2)?.item_count()?;
let max_uncles = engine.maximum_uncle_count(header.number());
if num_uncles != 0 {
if num_uncles > max_uncles {
return Err(From::from(BlockError::TooManyUncles(OutOfBounds {
min: None,
max: Some(max_uncles),
found: num_uncles,
})));
}
let mut excluded = HashSet::new();
excluded.insert(header.hash());
let mut hash = header.parent_hash().clone();
excluded.insert(hash.clone());
for _ in 0..engine.maximum_uncle_age() {
match bc.block_details(&hash) {
Some(details) => {
excluded.insert(details.parent.clone());
let b = bc.block(&hash)
.expect("parent already known to be stored; qed");
excluded.extend(b.uncle_hashes());
hash = details.parent;
}
None => break
}
}
let mut verified = HashSet::new();
for uncle in UntrustedRlp::new(bytes).at(2)?.iter().map(|rlp| rlp.as_val::<Header>()) {
let uncle = uncle?;
if excluded.contains(&uncle.hash()) {
return Err(From::from(BlockError::UncleInChain(uncle.hash())))
}
if verified.contains(&uncle.hash()) {
return Err(From::from(BlockError::DuplicateUncle(uncle.hash())))
}
// m_currentBlock.number() - uncle.number() m_cB.n - uP.n()
// 1 2
// 2
// 3
// 4
// 5
// 6 7
// (8 Invalid)
let depth = if header.number() > uncle.number() { header.number() - uncle.number() } else { 0 };
if depth > engine.maximum_uncle_age() as u64 {
return Err(From::from(BlockError::UncleTooOld(OutOfBounds { min: Some(header.number() - depth), max: Some(header.number() - 1), found: uncle.number() })));
}
else if depth < 1 {
return Err(From::from(BlockError::UncleIsBrother(OutOfBounds { min: Some(header.number() - depth), max: Some(header.number() - 1), found: uncle.number() })));
}
// cB
// cB.p^1 1 depth, valid uncle
// cB.p^2 ---/ 2
// cB.p^3 -----/ 3
// cB.p^4 -------/ 4
// cB.p^5 ---------/ 5
// cB.p^6 -----------/ 6
// cB.p^7 -------------/
// cB.p^8
let mut expected_uncle_parent = header.parent_hash().clone();
let uncle_parent = bc.block_header_data(&uncle.parent_hash()).ok_or_else(|| Error::from(BlockError::UnknownUncleParent(uncle.parent_hash().clone())))?;
for _ in 0..depth {
match bc.block_details(&expected_uncle_parent) {
Some(details) => {
expected_uncle_parent = details.parent;
},
None => break
}
}
if expected_uncle_parent != uncle_parent.hash() {
return Err(From::from(BlockError::UncleParentNotInChain(uncle_parent.hash())));
}
let uncle_parent = uncle_parent.decode();
verify_parent(&uncle, &uncle_parent, engine.params().gas_limit_bound_divisor)?;
engine.verify_block_family(&uncle, &uncle_parent)?;
verified.insert(uncle.hash());
}
}
Ok(())
}
/// Phase 4 verification. Check block information against transaction enactment results,
pub fn verify_block_final(expected: &Header, got: &Header) -> Result<(), Error> {
if expected.gas_used() != got.gas_used() {
return Err(From::from(BlockError::InvalidGasUsed(Mismatch { expected: expected.gas_used().clone(), found: got.gas_used().clone() })))
}
if expected.log_bloom() != got.log_bloom() {
return Err(From::from(BlockError::InvalidLogBloom(Mismatch { expected: expected.log_bloom().clone(), found: got.log_bloom().clone() })))
}
if expected.state_root() != got.state_root() {
return Err(From::from(BlockError::InvalidStateRoot(Mismatch { expected: expected.state_root().clone(), found: got.state_root().clone() })))
}
if expected.receipts_root() != got.receipts_root() {
return Err(From::from(BlockError::InvalidReceiptsRoot(Mismatch { expected: expected.receipts_root().clone(), found: got.receipts_root().clone() })))
}
Ok(())
}
/// Check basic header parameters.
pub fn verify_header_params(header: &Header, engine: &EthEngine, is_full: bool) -> Result<(), Error> {
let expected_seal_fields = engine.seal_fields(header);
if header.seal().len() != expected_seal_fields {
return Err(From::from(BlockError::InvalidSealArity(
Mismatch { expected: expected_seal_fields, found: header.seal().len() }
)));
}
if header.number() >= From::from(BlockNumber::max_value()) {
return Err(From::from(BlockError::RidiculousNumber(OutOfBounds { max: Some(From::from(BlockNumber::max_value())), min: None, found: header.number() })))
}
if header.gas_used() > header.gas_limit() {
return Err(From::from(BlockError::TooMuchGasUsed(OutOfBounds { max: Some(header.gas_limit().clone()), min: None, found: header.gas_used().clone() })));
}
let min_gas_limit = engine.params().min_gas_limit;
if header.gas_limit() < &min_gas_limit {
return Err(From::from(BlockError::InvalidGasLimit(OutOfBounds { min: Some(min_gas_limit), max: None, found: header.gas_limit().clone() })));
}
let maximum_extra_data_size = engine.maximum_extra_data_size();
if header.number() != 0 && header.extra_data().len() > maximum_extra_data_size {
return Err(From::from(BlockError::ExtraDataOutOfBounds(OutOfBounds { min: None, max: Some(maximum_extra_data_size), found: header.extra_data().len() })));
}
if let Some(ref ext) = engine.machine().ethash_extensions() {
if header.number() >= ext.dao_hardfork_transition &&
header.number() <= ext.dao_hardfork_transition + 9 &&
header.extra_data()[..] != b"dao-hard-fork"[..] {
return Err(From::from(BlockError::ExtraDataOutOfBounds(OutOfBounds { min: None, max: None, found: 0 })));
}
}
if is_full {
const ACCEPTABLE_DRIFT_SECS: u64 = 15;
let now = SystemTime::now().duration_since(UNIX_EPOCH).unwrap_or_default();
let max_time = now.as_secs() + ACCEPTABLE_DRIFT_SECS;
let invalid_threshold = max_time + ACCEPTABLE_DRIFT_SECS * 9;
let timestamp = header.timestamp();
if timestamp > invalid_threshold {
return Err(From::from(BlockError::InvalidTimestamp(OutOfBounds { max: Some(max_time), min: None, found: timestamp })))
}
if timestamp > max_time {
return Err(From::from(BlockError::TemporarilyInvalid(OutOfBounds { max: Some(max_time), min: None, found: timestamp })))
}
}
Ok(())
}
/// Check header parameters agains parent header.
fn verify_parent(header: &Header, parent: &Header, gas_limit_divisor: U256) -> Result<(), Error> {
if !header.parent_hash().is_zero() && &parent.hash() != header.parent_hash() {
return Err(From::from(BlockError::InvalidParentHash(Mismatch { expected: parent.hash(), found: header.parent_hash().clone() })))
}
if header.timestamp() <= parent.timestamp() {
return Err(From::from(BlockError::InvalidTimestamp(OutOfBounds { max: None, min: Some(parent.timestamp() + 1), found: header.timestamp() })))
}
if header.number() != parent.number() + 1 {
return Err(From::from(BlockError::InvalidNumber(Mismatch { expected: parent.number() + 1, found: header.number() })));
}
if header.number() == 0 {
return Err(BlockError::RidiculousNumber(OutOfBounds { min: Some(1), max: None, found: header.number() }).into());
}
let parent_gas_limit = *parent.gas_limit();
let min_gas = parent_gas_limit - parent_gas_limit / gas_limit_divisor;
let max_gas = parent_gas_limit + parent_gas_limit / gas_limit_divisor;
if header.gas_limit() <= &min_gas || header.gas_limit() >= &max_gas {
return Err(From::from(BlockError::InvalidGasLimit(OutOfBounds { min: Some(min_gas), max: Some(max_gas), found: header.gas_limit().clone() })));
}
Ok(())
}
/// Verify block data against header: transactions root and uncles hash.
fn verify_block_integrity(block: &[u8], transactions_root: &H256, uncles_hash: &H256) -> Result<(), Error> {
let block = UntrustedRlp::new(block);
let tx = block.at(1)?;
let expected_root = &ordered_trie_root(tx.iter().map(|r| r.as_raw()));
if expected_root != transactions_root {
return Err(From::from(BlockError::InvalidTransactionsRoot(Mismatch { expected: expected_root.clone(), found: transactions_root.clone() })))
}
let expected_uncles = &keccak(block.at(2)?.as_raw());
if expected_uncles != uncles_hash {
return Err(From::from(BlockError::InvalidUnclesHash(Mismatch { expected: expected_uncles.clone(), found: uncles_hash.clone() })))
}
Ok(())
}
#[cfg(test)]
mod tests {
use super::*;
use std::collections::{BTreeMap, HashMap};
use std::time::{SystemTime, UNIX_EPOCH};
use ethereum_types::{H256, Bloom, U256};
use blockchain::{BlockDetails, TransactionAddress, BlockReceipts};
use encoded;
use hash::keccak;
use engines::EthEngine;
use error::BlockError::*;
use ethkey::{Random, Generator};
use spec::{CommonParams, Spec};
use tests::helpers::{create_test_block_with_data, create_test_block};
use transaction::{SignedTransaction, Transaction, UnverifiedTransaction, Action};
use types::log_entry::{LogEntry, LocalizedLogEntry};
use rlp;
use triehash::ordered_trie_root;
fn check_ok(result: Result<(), Error>) {
result.unwrap_or_else(|e| panic!("Block verification failed: {:?}", e));
}
fn check_fail(result: Result<(), Error>, e: BlockError) {
match result {
Err(Error::Block(ref error)) if *error == e => (),
Err(other) => panic!("Block verification failed.\nExpected: {:?}\nGot: {:?}", e, other),
Ok(_) => panic!("Block verification failed.\nExpected: {:?}\nGot: Ok", e),
}
}
fn check_fail_timestamp(result: Result<(), Error>, temp: bool) {
let name = if temp { "TemporarilyInvalid" } else { "InvalidTimestamp" };
match result {
Err(Error::Block(BlockError::InvalidTimestamp(_))) if !temp => (),
Err(Error::Block(BlockError::TemporarilyInvalid(_))) if temp => (),
Err(other) => panic!("Block verification failed.\nExpected: {}\nGot: {:?}", name, other),
Ok(_) => panic!("Block verification failed.\nExpected: {}\nGot: Ok", name),
}
}
struct TestBlockChain {
blocks: HashMap<H256, Bytes>,
numbers: HashMap<BlockNumber, H256>,
}
impl Default for TestBlockChain {
fn default() -> Self {
TestBlockChain::new()
}
}
impl TestBlockChain {
pub fn new() -> Self {
TestBlockChain {
blocks: HashMap::new(),
numbers: HashMap::new(),
}
}
pub fn insert(&mut self, bytes: Bytes) {
let number = BlockView::new(&bytes).header_view().number();
let hash = BlockView::new(&bytes).header_view().hash();
self.blocks.insert(hash.clone(), bytes);
self.numbers.insert(number, hash.clone());
}
}
impl BlockProvider for TestBlockChain {
fn is_known(&self, hash: &H256) -> bool {
self.blocks.contains_key(hash)
}
fn first_block(&self) -> Option<H256> {
unimplemented!()
}
/// Get raw block data
fn block(&self, hash: &H256) -> Option<encoded::Block> {
self.blocks.get(hash).cloned().map(encoded::Block::new)
}
fn block_header_data(&self, hash: &H256) -> Option<encoded::Header> {
self.block(hash)
.map(|b| b.header_view().rlp().as_raw().to_vec())
.map(encoded::Header::new)
}
fn block_body(&self, hash: &H256) -> Option<encoded::Body> {
self.block(hash)
.map(|b| BlockChain::block_to_body(&b.into_inner()))
.map(encoded::Body::new)
}
fn best_ancient_block(&self) -> Option<H256> {
None
}
/// Get the familial details concerning a block.
fn block_details(&self, hash: &H256) -> Option<BlockDetails> {
self.blocks.get(hash).map(|bytes| {
let header = BlockView::new(bytes).header();
BlockDetails {
number: header.number(),
total_difficulty: header.difficulty().clone(),
parent: header.parent_hash().clone(),
children: Vec::new(),
}
})
}
fn transaction_address(&self, _hash: &H256) -> Option<TransactionAddress> {
unimplemented!()
}
/// Get the hash of given block's number.
fn block_hash(&self, index: BlockNumber) -> Option<H256> {
self.numbers.get(&index).cloned()
}
fn block_receipts(&self, _hash: &H256) -> Option<BlockReceipts> {
unimplemented!()
}
fn blocks_with_bloom(&self, _bloom: &Bloom, _from_block: BlockNumber, _to_block: BlockNumber) -> Vec<BlockNumber> {
unimplemented!()
}
fn logs<F>(&self, _blocks: Vec<BlockNumber>, _matches: F, _limit: Option<usize>) -> Vec<LocalizedLogEntry>
where F: Fn(&LogEntry) -> bool, Self: Sized {
unimplemented!()
}
}
fn basic_test(bytes: &[u8], engine: &EthEngine) -> Result<(), Error> {
let header = BlockView::new(bytes).header();
verify_block_basic(&header, bytes, engine)
}
fn family_test<BC>(bytes: &[u8], engine: &EthEngine, bc: &BC) -> Result<(), Error> where BC: BlockProvider {
let view = BlockView::new(bytes);
let header = view.header();
let transactions: Vec<_> = view.transactions()
.into_iter()
.map(SignedTransaction::new)
.collect::<Result<_,_>>()?;
// TODO: client is really meant to be used for state query here by machine
// additions that need access to state (tx filter in specific)
// no existing tests need access to test, so having this not function
// is fine.
let client = ::client::TestBlockChainClient::default();
let parent = bc.block_header_data(header.parent_hash())
.ok_or(BlockError::UnknownParent(header.parent_hash().clone()))?
.decode();
let full_params = FullFamilyParams {
block_bytes: bytes,
transactions: &transactions[..],
block_provider: bc as &BlockProvider,
client: &client,
};
verify_block_family(&header, &parent, engine, Some(full_params))
}
fn unordered_test(bytes: &[u8], engine: &EthEngine) -> Result<(), Error> {
let header = BlockView::new(bytes).header();
verify_block_unordered(header, bytes.to_vec(), engine, false)?;
Ok(())
}
#[test]
fn test_verify_block_basic_with_invalid_transactions() {
let spec = Spec::new_test();
let engine = &*spec.engine;
let block = {
let mut rlp = rlp::RlpStream::new_list(3);
let mut header = Header::default();
// that's an invalid transaction list rlp
let invalid_transactions = vec![vec![0u8]];
header.set_transactions_root(ordered_trie_root(&invalid_transactions));
header.set_gas_limit(engine.params().min_gas_limit);
rlp.append(&header);
rlp.append_list::<Vec<u8>, _>(&invalid_transactions);
rlp.append_raw(&rlp::EMPTY_LIST_RLP, 1);
rlp.out()
};
assert!(basic_test(&block, engine).is_err());
}
#[test]
fn test_verify_block() {
use rlp::RlpStream;
// Test against morden
let mut good = Header::new();
let spec = Spec::new_test();
let engine = &*spec.engine;
let min_gas_limit = engine.params().min_gas_limit;
good.set_gas_limit(min_gas_limit);
good.set_timestamp(40);
good.set_number(10);
let keypair = Random.generate().unwrap();
let tr1 = Transaction {
action: Action::Create,
value: U256::from(0),
data: Bytes::new(),
gas: U256::from(30_000),
gas_price: U256::from(40_000),
nonce: U256::one()
}.sign(keypair.secret(), None);
let tr2 = Transaction {
action: Action::Create,
value: U256::from(0),
data: Bytes::new(),
gas: U256::from(30_000),
gas_price: U256::from(40_000),
nonce: U256::from(2)
}.sign(keypair.secret(), None);
let good_transactions = [ tr1.clone(), tr2.clone() ];
let diff_inc = U256::from(0x40);
let mut parent6 = good.clone();
parent6.set_number(6);
let mut parent7 = good.clone();
parent7.set_number(7);
parent7.set_parent_hash(parent6.hash());
parent7.set_difficulty(parent6.difficulty().clone() + diff_inc);
parent7.set_timestamp(parent6.timestamp() + 10);
let mut parent8 = good.clone();
parent8.set_number(8);
parent8.set_parent_hash(parent7.hash());
parent8.set_difficulty(parent7.difficulty().clone() + diff_inc);
parent8.set_timestamp(parent7.timestamp() + 10);
let mut good_uncle1 = good.clone();
good_uncle1.set_number(9);
good_uncle1.set_parent_hash(parent8.hash());
good_uncle1.set_difficulty(parent8.difficulty().clone() + diff_inc);
good_uncle1.set_timestamp(parent8.timestamp() + 10);
good_uncle1.extra_data_mut().push(1u8);
let mut good_uncle2 = good.clone();
good_uncle2.set_number(8);
good_uncle2.set_parent_hash(parent7.hash());
good_uncle2.set_difficulty(parent7.difficulty().clone() + diff_inc);
good_uncle2.set_timestamp(parent7.timestamp() + 10);
good_uncle2.extra_data_mut().push(2u8);
let good_uncles = vec![ good_uncle1.clone(), good_uncle2.clone() ];
let mut uncles_rlp = RlpStream::new();
uncles_rlp.append_list(&good_uncles);
let good_uncles_hash = keccak(uncles_rlp.as_raw());
let good_transactions_root = ordered_trie_root(good_transactions.iter().map(|t| ::rlp::encode::<UnverifiedTransaction>(t)));
let mut parent = good.clone();
parent.set_number(9);
parent.set_timestamp(parent8.timestamp() + 10);
parent.set_parent_hash(parent8.hash());
parent.set_difficulty(parent8.difficulty().clone() + diff_inc);
good.set_parent_hash(parent.hash());
good.set_difficulty(parent.difficulty().clone() + diff_inc);
good.set_timestamp(parent.timestamp() + 10);
let mut bc = TestBlockChain::new();
bc.insert(create_test_block(&good));
bc.insert(create_test_block(&parent));
bc.insert(create_test_block(&parent6));
bc.insert(create_test_block(&parent7));
bc.insert(create_test_block(&parent8));
check_ok(basic_test(&create_test_block(&good), engine));
let mut header = good.clone();
header.set_transactions_root(good_transactions_root.clone());
header.set_uncles_hash(good_uncles_hash.clone());
check_ok(basic_test(&create_test_block_with_data(&header, &good_transactions, &good_uncles), engine));
header.set_gas_limit(min_gas_limit - From::from(1));
check_fail(basic_test(&create_test_block(&header), engine),
InvalidGasLimit(OutOfBounds { min: Some(min_gas_limit), max: None, found: header.gas_limit().clone() }));
header = good.clone();
header.set_number(BlockNumber::max_value());
check_fail(basic_test(&create_test_block(&header), engine),
RidiculousNumber(OutOfBounds { max: Some(BlockNumber::max_value()), min: None, found: header.number() }));
header = good.clone();
let gas_used = header.gas_limit().clone() + 1.into();
header.set_gas_used(gas_used);
check_fail(basic_test(&create_test_block(&header), engine),
TooMuchGasUsed(OutOfBounds { max: Some(header.gas_limit().clone()), min: None, found: header.gas_used().clone() }));
header = good.clone();
header.extra_data_mut().resize(engine.maximum_extra_data_size() + 1, 0u8);
check_fail(basic_test(&create_test_block(&header), engine),
ExtraDataOutOfBounds(OutOfBounds { max: Some(engine.maximum_extra_data_size()), min: None, found: header.extra_data().len() }));
header = good.clone();
header.extra_data_mut().resize(engine.maximum_extra_data_size() + 1, 0u8);
check_fail(basic_test(&create_test_block(&header), engine),
ExtraDataOutOfBounds(OutOfBounds { max: Some(engine.maximum_extra_data_size()), min: None, found: header.extra_data().len() }));
header = good.clone();
header.set_uncles_hash(good_uncles_hash.clone());
check_fail(basic_test(&create_test_block_with_data(&header, &good_transactions, &good_uncles), engine),
InvalidTransactionsRoot(Mismatch { expected: good_transactions_root.clone(), found: header.transactions_root().clone() }));
header = good.clone();
header.set_transactions_root(good_transactions_root.clone());
check_fail(basic_test(&create_test_block_with_data(&header, &good_transactions, &good_uncles), engine),
InvalidUnclesHash(Mismatch { expected: good_uncles_hash.clone(), found: header.uncles_hash().clone() }));
check_ok(family_test(&create_test_block(&good), engine, &bc));
check_ok(family_test(&create_test_block_with_data(&good, &good_transactions, &good_uncles), engine, &bc));
header = good.clone();
header.set_parent_hash(H256::random());
check_fail(family_test(&create_test_block_with_data(&header, &good_transactions, &good_uncles), engine, &bc),
UnknownParent(header.parent_hash().clone()));
header = good.clone();
header.set_timestamp(10);
check_fail(family_test(&create_test_block_with_data(&header, &good_transactions, &good_uncles), engine, &bc),
InvalidTimestamp(OutOfBounds { max: None, min: Some(parent.timestamp() + 1), found: header.timestamp() }));
header = good.clone();
header.set_timestamp(2450000000);
check_fail_timestamp(basic_test(&create_test_block_with_data(&header, &good_transactions, &good_uncles), engine), false);
header = good.clone();
header.set_timestamp(SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_secs() + 20);
check_fail_timestamp(basic_test(&create_test_block_with_data(&header, &good_transactions, &good_uncles), engine), true);
header = good.clone();
header.set_timestamp(SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_secs() + 10);
header.set_uncles_hash(good_uncles_hash.clone());
header.set_transactions_root(good_transactions_root.clone());
check_ok(basic_test(&create_test_block_with_data(&header, &good_transactions, &good_uncles), engine));
header = good.clone();
header.set_number(9);
check_fail(family_test(&create_test_block_with_data(&header, &good_transactions, &good_uncles), engine, &bc),
InvalidNumber(Mismatch { expected: parent.number() + 1, found: header.number() }));
header = good.clone();
let mut bad_uncles = good_uncles.clone();
bad_uncles.push(good_uncle1.clone());
check_fail(family_test(&create_test_block_with_data(&header, &good_transactions, &bad_uncles), engine, &bc),
TooManyUncles(OutOfBounds { max: Some(engine.maximum_uncle_count(header.number())), min: None, found: bad_uncles.len() }));
header = good.clone();
bad_uncles = vec![ good_uncle1.clone(), good_uncle1.clone() ];
check_fail(family_test(&create_test_block_with_data(&header, &good_transactions, &bad_uncles), engine, &bc),
DuplicateUncle(good_uncle1.hash()));
header = good.clone();
header.set_gas_limit(0.into());
header.set_difficulty("0000000000000000000000000000000000000000000000000000000000020000".parse::<U256>().unwrap());
match family_test(&create_test_block(&header), engine, &bc) {
Err(Error::Block(InvalidGasLimit(_))) => {},
Err(_) => { panic!("should be invalid difficulty fail"); },
_ => { panic!("Should be error, got Ok"); },
}
// TODO: some additional uncle checks
}
#[test]
fn dust_protection() {
use ethkey::{Generator, Random};
use transaction::{Transaction, Action};
use machine::EthereumMachine;
use engines::NullEngine;
let mut params = CommonParams::default();
params.dust_protection_transition = 0;
params.nonce_cap_increment = 2;
let mut header = Header::default();
header.set_number(1);
let keypair = Random.generate().unwrap();
let bad_transactions: Vec<_> = (0..3).map(|i| Transaction {
action: Action::Create,
value: U256::zero(),
data: Vec::new(),
gas: 0.into(),
gas_price: U256::zero(),
nonce: i.into(),
}.sign(keypair.secret(), None)).collect();
let good_transactions = [bad_transactions[0].clone(), bad_transactions[1].clone()];
let machine = EthereumMachine::regular(params, BTreeMap::new());
let engine = NullEngine::new(Default::default(), machine);
check_fail(unordered_test(&create_test_block_with_data(&header, &bad_transactions, &[]), &engine), TooManyTransactions(keypair.address()));
unordered_test(&create_test_block_with_data(&header, &good_transactions, &[]), &engine).unwrap();
}
}