Merge branch 'master' into gav

src/blockchain.rs

@@ -47,6 +47,55 @@ impl BestBlock {
 	}
 }
 
+/// Interface for querying blocks by hash and by number.
+pub trait BlockProvider {
+	/// Returns true if the given block is known
+	/// (though not necessarily a part of the canon chain).
+	fn is_known(&self, hash: &H256) -> bool;
+
+	/// Get raw block data
+	fn block(&self, hash: &H256) -> Option<Bytes>;
+
+	/// Get the familial details concerning a block.
+	fn block_details(&self, hash: &H256) -> Option<BlockDetails>;
+
+	/// Get the hash of given block's number.
+	fn block_hash(&self, index: BlockNumber) -> Option<H256>;
+
+	/// Get the partial-header of a block.
+	fn block_header(&self, hash: &H256) -> Option<Header> {
+		self.block(hash).map(|bytes| BlockView::new(&bytes).header())
+	}
+
+	/// Get a list of uncles for a given block.
+	/// Returns None if block deos not exist.
+	fn uncles(&self, hash: &H256) -> Option<Vec<Header>> {
+		self.block(hash).map(|bytes| BlockView::new(&bytes).uncles())
+	}
+
+	/// Get a list of uncle hashes for a given block.
+	/// Returns None if block does not exist.
+	fn uncle_hashes(&self, hash: &H256) -> Option<Vec<H256>> {
+		self.block(hash).map(|bytes| BlockView::new(&bytes).uncle_hashes())
+	}
+
+	/// Get the number of given block's hash.
+	fn block_number(&self, hash: &H256) -> Option<BlockNumber> {
+		self.block(hash).map(|bytes| BlockView::new(&bytes).header_view().number())
+	}
+
+	/// Get a list of transactions for a given block.
+	/// Returns None if block deos not exist.
+	fn transactions(&self, hash: &H256) -> Option<Vec<Transaction>> {
+		self.block(hash).map(|bytes| BlockView::new(&bytes).transactions())
+	}
+
+	/// Returns reference to genesis hash.
+	fn genesis_hash(&self) -> H256 {
+		self.block_hash(0).expect("Genesis hash should always exist")
+	}
+}
+
 /// Structure providing fast access to blockchain data.
 ///
 /// **Does not do input data verification.**
@@ -67,6 +116,48 @@ pub struct BlockChain {
 	blocks_db: DB
 }
 
+impl BlockProvider for BlockChain {
+	/// Returns true if the given block is known
+	/// (though not necessarily a part of the canon chain).
+	fn is_known(&self, hash: &H256) -> bool {
+		self.query_extras_exist(hash, &self.block_details)
+	}
+
+	/// Get raw block data
+	fn block(&self, hash: &H256) -> Option<Bytes> {
+		{
+			let read = self.blocks.read().unwrap();
+			match read.get(hash) {
+				Some(v) => return Some(v.clone()),
+				None => ()
+			}
+		}
+
+		let opt = self.blocks_db.get(hash)
+			.expect("Low level database error. Some issue with disk?");
+
+		match opt {
+			Some(b) => {
+				let bytes: Bytes = b.to_vec();
+				let mut write = self.blocks.write().unwrap();
+				write.insert(hash.clone(), bytes.clone());
+				Some(bytes)
+			},
+			None => None
+		}
+	}
+
+	/// Get the familial details concerning a block.
+	fn block_details(&self, hash: &H256) -> Option<BlockDetails> {
+		self.query_extras(hash, &self.block_details)
+	}
+
+	/// Get the hash of given block's number.
+	fn block_hash(&self, index: BlockNumber) -> Option<H256> {
+		self.query_extras(&index, &self.block_hashes)
+	}
+}
+
 impl BlockChain {
 	/// Create new instance of blockchain from given Genesis
 	///
@@ -363,61 +454,11 @@ impl BlockChain {
 		(batch, Some(best_block))
 	}
 
-	/// Returns true if the given block is known
-	/// (though not necessarily a part of the canon chain).
-	pub fn is_known(&self, hash: &H256) -> bool {
-		self.query_extras_exist(hash, &self.block_details)
-	}
-
 	/// Returns true if transaction is known.
 	pub fn is_known_transaction(&self, hash: &H256) -> bool {
 		self.query_extras_exist(hash, &self.transaction_addresses)
 	}
 
-	/// Returns reference to genesis hash.
-	pub fn genesis_hash(&self) -> H256 {
-		self.block_hash(0).expect("Genesis hash should always exist")
-	}
-
-	/// Get the partial-header of a block.
-	pub fn block_header(&self, hash: &H256) -> Option<Header> {
-		self.block(hash).map(|bytes| BlockView::new(&bytes).header())
-	}
-
-	/// Get a list of transactions for a given block.
-	/// Returns None if block deos not exist.
-	pub fn transactions(&self, hash: &H256) -> Option<Vec<Transaction>> {
-		self.block(hash).map(|bytes| BlockView::new(&bytes).transactions())
-	}
-
-	/// Get a list of transaction hashes for a given block.
-	/// Returns None if block does not exist.
-	pub fn transaction_hashes(&self, hash: &H256) -> Option<Vec<H256>> {
-		self.block(hash).map(|bytes| BlockView::new(&bytes).transaction_hashes())
-	}
-
-	/// Get a list of uncles for a given block.
-	/// Returns None if block deos not exist.
-	pub fn uncles(&self, hash: &H256) -> Option<Vec<Header>> {
-		self.block(hash).map(|bytes| BlockView::new(&bytes).uncles())
-	}
-
-	/// Get a list of uncle hashes for a given block.
-	/// Returns None if block does not exist.
-	pub fn uncle_hashes(&self, hash: &H256) -> Option<Vec<H256>> {
-		self.block(hash).map(|bytes| BlockView::new(&bytes).uncle_hashes())
-	}
-
-	/// Get the familial details concerning a block.
-	pub fn block_details(&self, hash: &H256) -> Option<BlockDetails> {
-		self.query_extras(hash, &self.block_details)
-	}
-
-	/// Get the hash of given block's number.
-	pub fn block_hash(&self, index: BlockNumber) -> Option<H256> {
-		self.query_extras(&index, &self.block_hashes)
-	}
-
 	/// Get best block hash.
 	pub fn best_block_hash(&self) -> H256 {
 		self.best_block.read().unwrap().hash.clone()
@@ -433,40 +474,11 @@ impl BlockChain {
 		self.best_block.read().unwrap().total_difficulty
 	}
 
-	/// Get the number of given block's hash.
-	pub fn block_number(&self, hash: &H256) -> Option<BlockNumber> {
-		self.block(hash).map(|bytes| BlockView::new(&bytes).header_view().number())
-	}
-
 	/// Get the transactions' log blooms of a block.
 	pub fn log_blooms(&self, hash: &H256) -> Option<BlockLogBlooms> {
 		self.query_extras(hash, &self.block_logs)
 	}
 
-	/// Get raw block data
-	pub fn block(&self, hash: &H256) -> Option<Bytes> {
-		{
-			let read = self.blocks.read().unwrap();
-			match read.get(hash) {
-				Some(v) => return Some(v.clone()),
-				None => ()
-			}
-		}
-
-		let opt = self.blocks_db.get(hash)
-			.expect("Low level database error. Some issue with disk?");
-
-		match opt {
-			Some(b) => {
-				let bytes: Bytes = b.to_vec();
-				let mut write = self.blocks.write().unwrap();
-				write.insert(hash.clone(), bytes.clone());
-				Some(bytes)
-			},
-			None => None
-		}
-	}
-
 	fn query_extras<K, T>(&self, hash: &K, cache: &RwLock<HashMap<K, T>>) -> Option<T> where
 		T: Clone + Decodable + ExtrasIndexable,
 		K: ExtrasSliceConvertable + Eq + Hash + Clone {

src/client.rs

@@ -1,5 +1,5 @@
 use util::*;
-use blockchain::BlockChain;
+use blockchain::{BlockChain, BlockProvider};
 use views::BlockView;
 use error::*;
 use header::BlockNumber;

src/error.rs

@@ -3,13 +3,13 @@
 use util::*;
 use header::BlockNumber;
 
-#[derive(Debug)]
+#[derive(Debug, PartialEq, Eq)]
 pub struct Mismatch<T: fmt::Debug> {
 	pub expected: T,
 	pub found: T,
 }
 
-#[derive(Debug)]
+#[derive(Debug, PartialEq, Eq)]
 pub struct OutOfBounds<T: fmt::Debug> {
 	pub min: Option<T>,
 	pub max: Option<T>,
@@ -38,7 +38,7 @@ pub enum TransactionError {
 	InvalidGasLimit(OutOfBounds<U256>),
 }
 
-#[derive(Debug)]
+#[derive(Debug, PartialEq, Eq)]
 pub enum BlockError {
 	TooManyUncles(OutOfBounds<usize>),
 	UncleWrongGeneration,

src/ethereum/ethash.rs

@@ -51,14 +51,6 @@ impl Engine for Ethash {
 		if header.difficulty < min_difficulty {
 			return Err(From::from(BlockError::InvalidDifficulty(Mismatch { expected: min_difficulty, found: header.difficulty })))
 		}
-		let min_gas_limit = decode(self.spec().engine_params.get("minGasLimit").unwrap());
-		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 }))); 
-		}
-		let maximum_extra_data_size = self.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() }))); 
-		}
 		// TODO: Verify seal (quick)
 		Ok(())
 	}

src/executive.rs

@@ -21,6 +21,8 @@ struct Substate {
 	logs: Vec<LogEntry>,
 	/// Refund counter of SSTORE nonzero->zero.
 	refunds_count: U256,
+	/// Created contracts.
+	contracts_created: Vec<Address>
 }
 
 impl Substate {
@@ -30,11 +32,13 @@ impl Substate {
 			suicides: HashSet::new(),
 			logs: vec![],
 			refunds_count: U256::zero(),
+			contracts_created: vec![]
 		}
 	}
 }
 
 /// Transaction execution receipt.
+#[derive(Debug)]
 pub struct Executed {
 	/// Gas paid up front for execution of transaction.
 	pub gas: U256,
@@ -54,6 +58,13 @@ pub struct Executed {
 
 	/// Execution ended running out of gas.
 	pub out_of_gas: bool,
+	/// Addresses of contracts created during execution of transaction.
+	/// Ordered from earliest creation.
+	/// 
+	/// eg. sender creates contract A and A in constructor creates contract B 
+	/// 
+	/// B creation ends first, and it will be the first element of the vector.
+	pub contracts_created: Vec<Address>
 }
 
 /// Transaction execution result.
@@ -64,7 +75,7 @@ pub struct Executive<'a> {
 	state: &'a mut State,
 	info: &'a EnvInfo,
 	engine: &'a Engine,
-	depth: usize,
+	depth: usize
 }
 
 impl<'a> Executive<'a> {
@@ -85,7 +96,7 @@ impl<'a> Executive<'a> {
 			state: state,
 			info: info,
 			engine: engine,
-			depth: depth,
+			depth: depth
 		}
 	}
 
@@ -122,8 +133,9 @@ impl<'a> Executive<'a> {
 
 		// NOTE: there can be no invalid transactions from this point.
 		self.state.inc_nonce(&sender);
-		let mut substate = Substate::new();
+		self.state.sub_balance(&sender, &gas_cost);
 
+		let mut substate = Substate::new();
 		let backup = self.state.clone();
 
 		let res = match t.action() {
@@ -215,6 +227,7 @@ impl<'a> Executive<'a> {
 					cumulative_gas_used: self.info.gas_used + t.gas,
 					logs: vec![],
 					out_of_gas: true,
+					contracts_created: vec![]
 				})
 			},
 			Ok(gas_left) => {
@@ -248,6 +261,7 @@ impl<'a> Executive<'a> {
 					cumulative_gas_used: self.info.gas_used + gas_used,
 					logs: substate.logs,
 					out_of_gas: false,
+					contracts_created: substate.contracts_created
 				})
 			}
 		}
@@ -331,7 +345,7 @@ impl<'a> Ext for Externalities<'a> {
 
 	fn create(&mut self, gas: u64, value: &U256, code: &[u8]) -> Result<(u64, Option<Address>), evm::Error> {
 		// if balance is insufficient or we are to deep, return
-		if self.state.balance(&self.params.address) < *value && self.depth >= 1024 {
+		if self.state.balance(&self.params.address) < *value || self.depth >= self.schedule.stack_limit {
 			return Ok((gas, None));
 		}
 
@@ -360,7 +374,7 @@ impl<'a> Ext for Externalities<'a> {
 		let mut call_gas = call_gas;
 
 		let is_call = receive_address == code_address;
-		if is_call && self.state.code(&code_address).is_none() {
+		if is_call && !self.state.exists(&code_address) {
 			gas_cost = gas_cost + self.schedule.call_new_account_gas as u64;
 		}
 
@@ -376,9 +390,8 @@ impl<'a> Ext for Externalities<'a> {
 
 		let gas = gas - gas_cost;
 
-		//println!("depth: {:?}", self.depth);
 		// if balance is insufficient or we are to deep, return
-		if self.state.balance(&self.params.address) < *value && self.depth >= 1024 {
+		if self.state.balance(&self.params.address) < *value || self.depth >= self.schedule.stack_limit {
 			return Ok(gas + call_gas)
 		}
 
@@ -394,7 +407,9 @@ impl<'a> Ext for Externalities<'a> {
 		};
 
 		let mut ex = Executive::from_parent(self.state, self.info, self.engine, self.depth);
-		ex.call(&params, self.substate, output).map(|gas_left| gas + gas_left.low_u64())
+		ex.call(&params, self.substate, output).map(|gas_left| {
+			gas + gas_left.low_u64()
+		})
 	}
 
 	fn extcode(&self, address: &Address) -> Vec<u8> {
@@ -402,6 +417,7 @@ impl<'a> Ext for Externalities<'a> {
 	}
 
 	fn ret(&mut self, gas: u64, data: &[u8]) -> Result<u64, evm::Error> {
+		println!("ret");
 		match &mut self.output {
 			&mut OutputPolicy::Return(ref mut slice) => unsafe {
 				let len = cmp::min(slice.len(), data.len());
@@ -411,7 +427,10 @@ impl<'a> Ext for Externalities<'a> {
 			&mut OutputPolicy::InitContract => {
 				let return_cost = data.len() as u64 * self.schedule.create_data_gas as u64;
 				if return_cost > gas {
-					return Err(evm::Error::OutOfGas);
+					return match self.schedule.exceptional_failed_code_deposit {
+						true => Err(evm::Error::OutOfGas),
+						false => Ok(gas)
+					}
 				}
 				let mut code = vec![];
 				code.reserve(data.len());
@@ -421,6 +440,7 @@ impl<'a> Ext for Externalities<'a> {
 				}
 				let address = &self.params.address;
 				self.state.init_code(address, code);
+				self.substate.contracts_created.push(address.clone());
 				Ok(gas - return_cost)
 			}
 		}
@@ -451,9 +471,35 @@ mod tests {
 	use common::*;
 	use state::*;
 	use ethereum;
-	use null_engine::*;
+	use engine::*;
+	use spec::*;
+	use evm::Schedule;
 	use super::Substate;
 
+	struct TestEngine {
+		spec: Spec,
+		stack_limit: usize
+	}
+
+	impl TestEngine {
+		fn new(stack_limit: usize) -> TestEngine {
+			TestEngine {
+				spec: ethereum::new_frontier(),
+				stack_limit: stack_limit 
+			}
+		}
+	}
+
+	impl Engine for TestEngine {
+		fn name(&self) -> &str { "TestEngine" }
+		fn spec(&self) -> &Spec { &self.spec }
+		fn schedule(&self, _env_info: &EnvInfo) -> Schedule { 
+			let mut schedule = Schedule::new_frontier();
+			schedule.stack_limit = self.stack_limit; 
+			schedule
+		}
+	}
+
 	#[test]
 	fn test_contract_address() {
 		let address = Address::from_str("0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6").unwrap();
@@ -463,35 +509,114 @@ mod tests {
 
 	#[test]
 	// TODO: replace params with transactions!
-	fn test_executive() {
+	fn test_sender_balance() {
 		let sender = Address::from_str("0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6").unwrap();
 		let address = contract_address(&sender, &U256::zero());
 		let mut params = ActionParams::new();
 		params.address = address.clone();
 		params.sender = sender.clone();
-		params.gas = U256::from(0x174876e800u64);
+		params.gas = U256::from(100_000);
 		params.code = "3331600055".from_hex().unwrap();
 		params.value = U256::from(0x7);
 		let mut state = State::new_temp();
 		state.add_balance(&sender, &U256::from(0x100u64));
 		let info = EnvInfo::new();
-		let engine = NullEngine::new_boxed(ethereum::new_frontier());
+		let engine = TestEngine::new(0);
 		let mut substate = Substate::new();
 
-		{
+		let gas_left = {
-			let mut ex = Executive::new(&mut state, &info, engine.deref());
+			let mut ex = Executive::new(&mut state, &info, &engine);
-			let _res = ex.create(&params, &mut substate);
+			ex.create(&params, &mut substate).unwrap()
-		}
+		};
 
+		assert_eq!(gas_left, U256::from(79_975));
 		assert_eq!(state.storage_at(&address, &H256::new()), H256::from(&U256::from(0xf9u64)));
 		assert_eq!(state.balance(&sender), U256::from(0xf9));
 		assert_eq!(state.balance(&address), U256::from(0x7));
+		// 0 cause contract hasn't returned
+		assert_eq!(substate.contracts_created.len(), 0);
 
 		// TODO: just test state root.
 	}
 
 	#[test]
 	fn test_create_contract() {
+		// code:
+		//
+		// 7c 601080600c6000396000f3006000355415600957005b60203560003555 - push 29 bytes?
+		// 60 00 - push 0
+		// 52
+		// 60 1d - push 29
+		// 60 03 - push 3
+		// 60 17 - push 17
+		// f0 - create
+		// 60 00 - push 0
+		// 55 sstore
+		//
+		// other code:
+		//
+		// 60 10 - push 16
+		// 80 - duplicate first stack item
+		// 60 0c - push 12
+		// 60 00 - push 0
+		// 39 - copy current code to memory
+		// 60 00 - push 0
+		// f3 - return
+
+		let code = "7c601080600c6000396000f3006000355415600957005b60203560003555600052601d60036017f0600055".from_hex().unwrap();
+
+		let sender = Address::from_str("cd1722f3947def4cf144679da39c4c32bdc35681").unwrap();
+		let address = contract_address(&sender, &U256::zero());
+		// TODO: add tests for 'callcreate'
+		//let next_address = contract_address(&address, &U256::zero());
+		let mut params = ActionParams::new();
+		params.address = address.clone();
+		params.sender = sender.clone();
+		params.origin = sender.clone();
+		params.gas = U256::from(100_000);
+		params.code = code.clone();
+		params.value = U256::from(100);
+		let mut state = State::new_temp();
+		state.add_balance(&sender, &U256::from(100));
+		let info = EnvInfo::new();
+		let engine = TestEngine::new(0);
+		let mut substate = Substate::new();
+
+		let gas_left = {
+			let mut ex = Executive::new(&mut state, &info, &engine);
+			ex.create(&params, &mut substate).unwrap()
+		};
+		
+		assert_eq!(gas_left, U256::from(47_976));
+		assert_eq!(substate.contracts_created.len(), 0);
+	}
+
+	#[test]
+	fn test_create_contract_without_stack_limit() {
+		// code:
+		//
+		// 7c 601080600c6000396000f3006000355415600957005b60203560003555 - push 29 bytes?
+		// 60 00 - push 0
+		// 52
+		// 60 1d - push 29
+		// 60 03 - push 3
+		// 60 17 - push 17
+		// f0 - create
+		// 60 00 - push 0
+		// 55 sstore
+		//
+		// other code:
+		//
+		// 60 10 - push 16
+		// 80 - duplicate first stack item
+		// 60 0c - push 12
+		// 60 00 - push 0
+		// 39 - copy current code to memory
+		// 60 00 - push 0
+		// f3 - return
+
+		let code = "7c601080600c6000396000f3006000355415600957005b60203560003555600052601d60036017f0600055".from_hex().unwrap();
+
 		let sender = Address::from_str("cd1722f3947def4cf144679da39c4c32bdc35681").unwrap();
 		let address = contract_address(&sender, &U256::zero());
 		let next_address = contract_address(&address, &U256::zero());
@@ -499,23 +624,80 @@ mod tests {
 		params.address = address.clone();
 		params.sender = sender.clone();
 		params.origin = sender.clone();
-		params.gas = U256::from(0x174876e800u64);
+		params.gas = U256::from(100_000);
-		params.code = "7c601080600c6000396000f3006000355415600957005b60203560003555600052601d60036000f0600055".from_hex().unwrap();
+		params.code = code.clone();
+		params.value = U256::from(100);
 		let mut state = State::new_temp();
-		state.add_balance(&sender, &U256::from(0x100u64));
+		state.add_balance(&sender, &U256::from(100));
 		let info = EnvInfo::new();
-		let engine = NullEngine::new_boxed(ethereum::new_frontier());
+		let engine = TestEngine::new(1024);
 		let mut substate = Substate::new();
 
 		{
-			let mut ex = Executive::new(&mut state, &info, engine.deref());
+			let mut ex = Executive::new(&mut state, &info, &engine);
-			let _res = ex.create(&params, &mut substate);
+			ex.create(&params, &mut substate).unwrap();
-			println!("res: {:?}", _res);
 		}
 		
-		assert_eq!(state.storage_at(&address, &H256::new()), H256::from(next_address.clone()));
+		assert_eq!(substate.contracts_created.len(), 1);
-		assert_eq!(state.code(&next_address).unwrap(), "6000355415600957005b602035600035".from_hex().unwrap());
+		assert_eq!(substate.contracts_created[0], next_address);
-		//assert!(false);
+	}
+
+	#[test]
+	fn test_aba_calls() {
+		// 60 00 - push 0
+		// 60 00 - push 0
+		// 60 00 - push 0
+		// 60 00 - push 0
+		// 60 18 - push 18
+		// 73 945304eb96065b2a98b57a48a06ae28d285a71b5 - push this address
+		// 61 03e8 - push 1000
+		// f1 - message call
+		// 58 - get PC
+		// 55 - sstore
+
+		let code_a = "6000600060006000601873945304eb96065b2a98b57a48a06ae28d285a71b56103e8f15855".from_hex().unwrap();
+
+		// 60 00 - push 0
+		// 60 00 - push 0
+		// 60 00 - push 0
+		// 60 00 - push 0
+		// 60 17 - push 17
+		// 73 0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6 - push this address
+		// 61 0x01f4 - push 500
+		// f1 - message call
+		// 60 01 - push 1
+		// 01 - add
+		// 58 - get PC
+		// 55 - sstore
+		let code_b = "60006000600060006017730f572e5295c57f15886f9b263e2f6d2d6c7b5ec66101f4f16001015855".from_hex().unwrap();
+
+		let address_a = Address::from_str("0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6").unwrap();
+		let address_b = Address::from_str("945304eb96065b2a98b57a48a06ae28d285a71b5" ).unwrap();
+		let sender = Address::from_str("cd1722f3947def4cf144679da39c4c32bdc35681").unwrap();
+
+		let mut params = ActionParams::new();
+		params.address = address_a.clone();
+		params.sender = sender.clone();
+		params.gas = U256::from(100_000);
+		params.code = code_a.clone();
+		params.value = U256::from(100_000);
+
+		let mut state = State::new_temp();
+		state.init_code(&address_a, code_a.clone());
+		state.init_code(&address_b, code_b.clone());
+		state.add_balance(&sender, &U256::from(100_000));
+
+		let info = EnvInfo::new();
+		let engine = TestEngine::new(0);
+		let mut substate = Substate::new();
+
+		let gas_left = {
+			let mut ex = Executive::new(&mut state, &info, &engine);
+			ex.call(&params, &mut substate, &mut []).unwrap()
+		};
+
+		assert_eq!(gas_left, U256::from(73_237));
+		assert_eq!(state.storage_at(&address_a, &H256::from(&U256::from(0x23))), H256::from(&U256::from(1)));
 	}
 
 	#[test]
@@ -537,28 +719,27 @@ mod tests {
 		// 03 - sub
 		// f1 - message call (self in this case)
 		// 60 01 - push 1
-		// 55 - store
+		// 55 - sstore
 		let sender = Address::from_str("cd1722f3947def4cf144679da39c4c32bdc35681").unwrap();
 		let code = "600160005401600055600060006000600060003060e05a03f1600155".from_hex().unwrap();
 		let address = contract_address(&sender, &U256::zero());
 		let mut params = ActionParams::new();
 		params.address = address.clone();
-		params.sender = sender.clone();
+		params.gas = U256::from(100_000);
-		params.origin = sender.clone();
-		params.gas = U256::from(0x590b3);
-		params.gas_price = U256::one();
 		params.code = code.clone();
-		println!("init gas: {:?}", params.gas.low_u64());
 		let mut state = State::new_temp();
 		state.init_code(&address, code.clone());
 		let info = EnvInfo::new();
-		let engine = NullEngine::new_boxed(ethereum::new_frontier());
+		let engine = TestEngine::new(0);
 		let mut substate = Substate::new();
 
-		{
+		let gas_left = {
-			let mut ex = Executive::new(&mut state, &info, engine.deref());
+			let mut ex = Executive::new(&mut state, &info, &engine);
-			let _res = ex.call(&params, &mut substate, &mut []);
+			ex.call(&params, &mut substate, &mut []).unwrap()
-			println!("res: {:?}", _res);
+		};
-		}
+
+		assert_eq!(gas_left, U256::from(59_870));
+		assert_eq!(state.storage_at(&address, &H256::from(&U256::zero())), H256::from(&U256::from(1)));
+		assert_eq!(state.storage_at(&address, &H256::from(&U256::one())), H256::from(&U256::from(1)));
 	}
 }

src/header.rs

@@ -10,7 +10,7 @@ pub type BlockNumber = u64;
 /// which is non-specific.
 ///
 /// Doesn't do all that much on its own.
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub struct Header {
 	// TODO: make all private.
 	pub parent_hash: H256,

src/log_entry.rs

@@ -2,6 +2,7 @@ use util::*;
 use basic_types::LogBloom;
 
 /// A single log's entry.
+#[derive(Debug)]
 pub struct LogEntry {
 	pub address: Address,
 	pub topics: Vec<H256>,

src/queue.rs

@@ -1,5 +1,5 @@
 use util::*;
-use blockchain::BlockChain;
+use blockchain::*;
 use views::{BlockView};
 use verification::*;
 use error::*;

src/verification.rs

@@ -7,17 +7,17 @@
 
 use common::*;
 use engine::Engine;
-use blockchain::BlockChain;
+use blockchain::*;
 
 /// Phase 1 quick block verification. Only does checks that are cheap. Operates on a single block
 pub fn verify_block_basic(bytes: &[u8], engine: &Engine) -> Result<(), Error> {
 	let block = BlockView::new(bytes);
 	let header = block.header();
-	try!(verify_header(&header));
+	try!(verify_header(&header, engine));
 	try!(verify_block_integrity(bytes, &header.transactions_root, &header.uncles_hash));
 	try!(engine.verify_block_basic(&header, Some(bytes)));
 	for u in Rlp::new(bytes).at(2).iter().map(|rlp| rlp.as_val::<Header>()) {
-		try!(verify_header(&u));
+		try!(verify_header(&u, engine));
 		try!(engine.verify_block_basic(&u, None));
 	}
 	Ok(())
@@ -37,7 +37,7 @@ pub fn verify_block_unordered(bytes: &[u8], engine: &Engine) -> Result<(), Error
 }
 
 /// Phase 3 verification. Check block information against parent and uncles.
-pub fn verify_block_final(bytes: &[u8], engine: &Engine, bc: &BlockChain) -> Result<(), Error> {
+pub fn verify_block_final<BC>(bytes: &[u8], engine: &Engine, bc: &BC) -> Result<(), Error> where BC: BlockProvider {
 	let block = BlockView::new(bytes);
 	let header = block.header();
 	let parent = try!(bc.block_header(&header.parent_hash).ok_or::<Error>(From::from(BlockError::UnknownParent(header.parent_hash.clone()))));
@@ -67,9 +67,8 @@ pub fn verify_block_final(bytes: &[u8], engine: &Engine, bc: &BlockChain) -> Res
 		}
 
 		for uncle in Rlp::new(bytes).at(2).iter().map(|rlp| rlp.as_val::<Header>()) {
-			let uncle_parent = try!(bc.block_header(&uncle.parent_hash).ok_or::<Error>(From::from(BlockError::UnknownUncleParent(uncle.parent_hash.clone()))));
+			if excluded.contains(&uncle.hash()) {
-			if excluded.contains(&uncle_parent.hash()) {
+				return Err(From::from(BlockError::UncleInChain(uncle.hash())))
-				return Err(From::from(BlockError::UncleInChain(uncle_parent.hash())))
 			}
 
 			// m_currentBlock.number() - uncle.number()		m_cB.n - uP.n()
@@ -99,13 +98,20 @@ pub fn verify_block_final(bytes: &[u8], engine: &Engine, bc: &BlockChain) -> Res
 			// cB.p^7	-------------/
 			// cB.p^8
 			let mut expected_uncle_parent = header.parent_hash.clone();
+			let uncle_parent = try!(bc.block_header(&uncle.parent_hash).ok_or::<Error>(From::from(BlockError::UnknownUncleParent(uncle.parent_hash.clone()))));
 			for _ in 0..depth {
-				 expected_uncle_parent = bc.block_details(&expected_uncle_parent).unwrap().parent;
+				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())));
 			}
 
+			try!(verify_parent(&uncle, &uncle_parent));
 			try!(engine.verify_block_final(&uncle, &uncle_parent, Some(bytes)));
 		}
 	}
@@ -113,13 +119,21 @@ pub fn verify_block_final(bytes: &[u8], engine: &Engine, bc: &BlockChain) -> Res
 }
 
 /// Check basic header parameters.
-fn verify_header(header: &Header) -> Result<(), Error> {
+fn verify_header(header: &Header, engine: &Engine) -> Result<(), Error> {
-	if header.number > From::from(BlockNumber::max_value()) {
+	if header.number >= From::from(BlockNumber::max_value()) {
 		return Err(From::from(BlockError::InvalidNumber(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), min: None, found: header.gas_used })));
 	}
+	let min_gas_limit = decode(engine.spec().engine_params.get("minGasLimit").unwrap());
+	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 })));
+	}
+	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() })));
+	}
 	Ok(())
 }
 
@@ -152,3 +166,235 @@ fn verify_block_integrity(block: &[u8], transactions_root: &H256, uncles_hash: &
 	Ok(())
 }
 
+#[cfg(test)]
+mod tests {
+	use util::*;
+	use header::*;
+	use verification::*;
+	use extras::*;
+	use error::*;
+	use error::BlockError::*;
+	use views::*;
+	use blockchain::*;
+	use ethereum;
+
+	fn create_test_block(header: &Header) -> Bytes {
+		let mut rlp = RlpStream::new_list(3);
+		rlp.append(header);
+		rlp.append_raw(&rlp::EMPTY_LIST_RLP, 1);
+		rlp.append_raw(&rlp::EMPTY_LIST_RLP, 1);
+		rlp.out()
+	}
+
+	fn create_test_block_with_data(header: &Header, transactions: &[Bytes], uncles: &[Header]) -> Bytes {
+		let mut rlp = RlpStream::new_list(3);
+		rlp.append(header);
+		rlp.append_list(transactions.len());
+		for t in transactions {
+			rlp.append_raw(t, 1);
+		}
+		rlp.append_list(uncles.len());
+		for h in uncles {
+			rlp.append(h);
+		}
+		rlp.out()
+	}
+
+	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),
+		}
+	}
+
+	struct TestBlockChain {
+		blocks: HashMap<H256, Bytes>,
+		numbers: HashMap<BlockNumber, H256>,
+	}
+
+	impl TestBlockChain {
+		pub fn new() -> TestBlockChain {
+			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().sha3();
+			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)
+		}
+
+		/// Get raw block data
+		fn block(&self, hash: &H256) -> Option<Bytes> {
+			self.blocks.get(hash).map(|b| b.clone())
+		}
+
+		/// 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,
+					parent: header.parent_hash,
+					children: Vec::new(),
+				}
+			})
+		}
+
+		/// Get the hash of given block's number.
+		fn block_hash(&self, index: BlockNumber) -> Option<H256> {
+			self.numbers.get(&index).map(|h| h.clone())
+		}
+	}
+
+	#[test]
+	fn test_verify_block() {
+		// Test against morden
+		let mut good = Header::new();
+		let spec = ethereum::new_morden();
+		let engine = spec.to_engine().unwrap();
+
+		let min_gas_limit = decode(engine.spec().engine_params.get("minGasLimit").unwrap());
+		let min_difficulty = decode(engine.spec().engine_params.get("minimumDifficulty").unwrap());
+		good.gas_limit = min_gas_limit;
+		good.difficulty = min_difficulty;
+		good.timestamp = 40;
+		good.number = 10;
+
+		let good_transactions = vec![ vec![ 1u8 ], vec![ 2u8 ] ]; // TODO: proper transactions
+
+		let diff_inc = U256::from(0x40);
+
+		let mut parent6 = good.clone();
+		parent6.number = 6;
+		let mut parent7 = good.clone();
+		parent7.number = 7;
+		parent7.parent_hash = parent6.hash();
+		parent7.difficulty = parent6.difficulty + diff_inc;
+		parent7.timestamp = parent6.timestamp + 10;
+		let mut parent8 = good.clone();
+		parent8.number = 8;
+		parent8.parent_hash = parent7.hash();
+		parent8.difficulty = parent7.difficulty + diff_inc;
+		parent8.timestamp = parent7.timestamp + 10;
+
+		let mut good_uncle1 = good.clone();
+		good_uncle1.number = 9;
+		good_uncle1.parent_hash = parent8.hash();
+		good_uncle1.difficulty = parent8.difficulty + diff_inc;
+		good_uncle1.timestamp = parent8.timestamp + 10;
+		good_uncle1.extra_data.push(1u8);
+
+		let mut good_uncle2 = good.clone();
+		good_uncle2.number = 8;
+		good_uncle2.parent_hash = parent7.hash();
+		good_uncle2.difficulty = parent7.difficulty + diff_inc;
+		good_uncle2.timestamp = parent7.timestamp + 10;
+		good_uncle2.extra_data.push(2u8);
+
+		let good_uncles = vec![ good_uncle1.clone(), good_uncle2.clone() ];
+		let mut uncles_rlp = RlpStream::new();
+		uncles_rlp.append(&good_uncles);
+		let good_uncles_hash = uncles_rlp.as_raw().sha3();
+		let good_transactions_root = ordered_trie_root(good_transactions.clone());
+
+		let mut parent = good.clone();
+		parent.number = 9;
+		parent.timestamp = parent8.timestamp + 10;
+		parent.parent_hash = parent8.hash();
+		parent.difficulty = parent8.difficulty + diff_inc;
+
+		good.parent_hash = parent.hash();
+		good.difficulty = parent.difficulty + diff_inc;
+		good.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(verify_block_basic(&create_test_block(&good), engine.deref()));
+
+		let mut header = good.clone();
+		header.transactions_root = good_transactions_root.clone();
+		header.uncles_hash = good_uncles_hash.clone();
+		check_ok(verify_block_basic(&create_test_block_with_data(&header, &good_transactions, &good_uncles), engine.deref()));
+
+		header.gas_limit = min_gas_limit - From::from(1);
+		check_fail(verify_block_basic(&create_test_block(&header), engine.deref()),
+			InvalidGasLimit(OutOfBounds { min: Some(min_gas_limit), max: None, found: header.gas_limit }));
+
+		header = good.clone();
+		header.number = BlockNumber::max_value();
+		check_fail(verify_block_basic(&create_test_block(&header), engine.deref()),
+			InvalidNumber(OutOfBounds { max: Some(BlockNumber::max_value()), min: None, found: header.number }));
+
+		header = good.clone();
+		header.gas_used = header.gas_limit + From::from(1);
+		check_fail(verify_block_basic(&create_test_block(&header), engine.deref()),
+			TooMuchGasUsed(OutOfBounds { max: Some(header.gas_limit), min: None, found: header.gas_used }));
+
+		header = good.clone();
+		header.extra_data.resize(engine.maximum_extra_data_size() + 1, 0u8);
+		check_fail(verify_block_basic(&create_test_block(&header), engine.deref()),
+			ExtraDataOutOfBounds(OutOfBounds { max: Some(engine.maximum_extra_data_size()), min: None, found: header.extra_data.len() }));
+
+		header = good.clone();
+		header.extra_data.resize(engine.maximum_extra_data_size() + 1, 0u8);
+		check_fail(verify_block_basic(&create_test_block(&header), engine.deref()),
+			ExtraDataOutOfBounds(OutOfBounds { max: Some(engine.maximum_extra_data_size()), min: None, found: header.extra_data.len() }));
+
+		header = good.clone();
+		header.uncles_hash = good_uncles_hash.clone();
+		check_fail(verify_block_basic(&create_test_block_with_data(&header, &good_transactions, &good_uncles), engine.deref()),
+			InvalidTransactionsRoot(Mismatch { expected: good_transactions_root.clone(), found: header.transactions_root }));
+
+		header = good.clone();
+		header.transactions_root = good_transactions_root.clone();
+		check_fail(verify_block_basic(&create_test_block_with_data(&header, &good_transactions, &good_uncles), engine.deref()),
+			InvalidUnclesHash(Mismatch { expected: good_uncles_hash.clone(), found: header.uncles_hash }));
+
+		check_ok(verify_block_final(&create_test_block(&good), engine.deref(), &bc));
+		check_ok(verify_block_final(&create_test_block_with_data(&good, &good_transactions, &good_uncles), engine.deref(), &bc));
+
+		header = good.clone();
+		header.parent_hash = H256::random();
+		check_fail(verify_block_final(&create_test_block_with_data(&header, &good_transactions, &good_uncles), engine.deref(), &bc),
+			UnknownParent(header.parent_hash));
+
+		header = good.clone();
+		header.timestamp = 10;
+		check_fail(verify_block_final(&create_test_block_with_data(&header, &good_transactions, &good_uncles), engine.deref(), &bc),
+			InvalidTimestamp(OutOfBounds { max: None, min: Some(parent.timestamp + 1), found: header.timestamp }));
+
+		header = good.clone();
+		header.number = 9;
+		check_fail(verify_block_final(&create_test_block_with_data(&header, &good_transactions, &good_uncles), engine.deref(), &bc),
+			InvalidNumber(OutOfBounds { max: None, min: Some(parent.number + 1), found: header.number }));
+		
+		header = good.clone();
+		let mut bad_uncles = good_uncles.clone();
+		bad_uncles.push(good_uncle1.clone());
+		check_fail(verify_block_final(&create_test_block_with_data(&header, &good_transactions, &bad_uncles), engine.deref(), &bc),
+			TooManyUncles(OutOfBounds { max: Some(engine.maximum_uncle_count()), min: None, found: bad_uncles.len() }));
+
+		// TODO: some additional uncle checks
+	}
+}