1006 lines
31 KiB
Rust
1006 lines
31 KiB
Rust
//! Transaction Execution environment.
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use common::*;
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use state::*;
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use engine::*;
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use evm::{self, Schedule, Factory, Ext};
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/// Returns new address created from address and given nonce.
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pub fn contract_address(address: &Address, nonce: &U256) -> Address {
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let mut stream = RlpStream::new_list(2);
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stream.append(address);
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stream.append(nonce);
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From::from(stream.out().sha3())
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}
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/// State changes which should be applied in finalize,
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/// after transaction is fully executed.
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pub struct Substate {
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/// Any accounts that have suicided.
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suicides: HashSet<Address>,
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/// Any logs.
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logs: Vec<LogEntry>,
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/// Refund counter of SSTORE nonzero->zero.
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refunds_count: U256,
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/// True if transaction, or one of its subcalls runs out of gas.
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excepted: bool,
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/// Created contracts.
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contracts_created: Vec<Address>
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}
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impl Substate {
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/// Creates new substate.
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pub fn new() -> Self {
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Substate {
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suicides: HashSet::new(),
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logs: vec![],
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refunds_count: U256::zero(),
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excepted: false,
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contracts_created: vec![]
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}
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}
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pub fn accrue(&mut self, s: Substate) {
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self.suicides.extend(s.suicides.into_iter());
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self.logs.extend(s.logs.into_iter());
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self.refunds_count = self.refunds_count + s.refunds_count;
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self.excepted |= s.excepted;
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self.contracts_created.extend(s.contracts_created.into_iter());
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}
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pub fn excepted(&self) -> bool { self.excepted }
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}
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/// Transaction execution receipt.
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#[derive(Debug)]
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pub struct Executed {
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/// Gas paid up front for execution of transaction.
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pub gas: U256,
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/// Gas used during execution of transaction.
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pub gas_used: U256,
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/// Gas refunded after the execution of transaction.
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/// To get gas that was required up front, add `refunded` and `gas_used`.
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pub refunded: U256,
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/// Cumulative gas used in current block so far.
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///
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/// `cumulative_gas_used = gas_used(t0) + gas_used(t1) + ... gas_used(tn)`
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///
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/// where `tn` is current transaction.
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pub cumulative_gas_used: U256,
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/// Vector of logs generated by transaction.
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pub logs: Vec<LogEntry>,
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/// Execution ended running out of gas.
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pub excepted: bool,
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/// Addresses of contracts created during execution of transaction.
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/// Ordered from earliest creation.
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///
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/// eg. sender creates contract A and A in constructor creates contract B
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///
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/// B creation ends first, and it will be the first element of the vector.
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pub contracts_created: Vec<Address>
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}
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/// Transaction execution result.
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pub type ExecutionResult = Result<Executed, ExecutionError>;
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/// Transaction executor.
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pub struct Executive<'a> {
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state: &'a mut State,
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info: &'a EnvInfo,
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engine: &'a Engine,
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depth: usize
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}
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impl<'a> Executive<'a> {
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/// Basic constructor.
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pub fn new(state: &'a mut State, info: &'a EnvInfo, engine: &'a Engine) -> Self {
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Executive::new_with_depth(state, info, engine, 0)
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}
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/// Populates executive from parent properties. Increments executive depth.
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fn from_parent(state: &'a mut State, info: &'a EnvInfo, engine: &'a Engine, depth: usize) -> Self {
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Executive::new_with_depth(state, info, engine, depth + 1)
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}
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/// Helper constructor. Should be used to create `Executive` with desired depth.
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/// Private.
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fn new_with_depth(state: &'a mut State, info: &'a EnvInfo, engine: &'a Engine, depth: usize) -> Self {
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Executive {
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state: state,
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info: info,
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engine: engine,
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depth: depth
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}
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}
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/// This funtion should be used to execute transaction.
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pub fn transact(&mut self, t: &Transaction) -> Result<Executed, Error> {
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let sender = try!(t.sender());
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let nonce = self.state.nonce(&sender);
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// TODO: error on base gas required
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// validate transaction nonce
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if t.nonce != nonce {
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return Err(From::from(ExecutionError::InvalidNonce { expected: nonce, is: t.nonce }));
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}
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// validate if transaction fits into given block
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if self.info.gas_used + t.gas > self.info.gas_limit {
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return Err(From::from(ExecutionError::BlockGasLimitReached {
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gas_limit: self.info.gas_limit,
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gas_used: self.info.gas_used,
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gas: t.gas
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}));
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}
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// TODO: we might need bigints here, or at least check overflows.
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let balance = self.state.balance(&sender);
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let gas_cost = U512::from(t.gas) * U512::from(t.gas_price);
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let total_cost = U512::from(t.value) + gas_cost;
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// avoid unaffordable transactions
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if U512::from(balance) < total_cost {
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return Err(From::from(ExecutionError::NotEnoughCash { required: total_cost, is: U512::from(balance) }));
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}
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// NOTE: there can be no invalid transactions from this point.
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self.state.inc_nonce(&sender);
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self.state.sub_balance(&sender, &U256::from(gas_cost));
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let mut substate = Substate::new();
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let schedule = self.engine.schedule(self.info);
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let init_gas = t.gas - U256::from(t.gas_required(&schedule));
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let res = match t.action() {
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&Action::Create => {
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let params = ActionParams {
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address: contract_address(&sender, &nonce),
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sender: sender.clone(),
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origin: sender.clone(),
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gas: init_gas,
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gas_price: t.gas_price,
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value: t.value,
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code: t.data.clone(),
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data: vec![],
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};
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self.create(¶ms, &mut substate)
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},
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&Action::Call(ref address) => {
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let params = ActionParams {
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address: address.clone(),
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sender: sender.clone(),
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origin: sender.clone(),
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gas: init_gas,
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gas_price: t.gas_price,
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value: t.value,
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code: self.state.code(address).unwrap_or(vec![]),
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data: t.data.clone(),
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};
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// TODO: move output upstream
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let mut out = vec![];
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self.call(¶ms, &mut substate, BytesRef::Flexible(&mut out))
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}
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};
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// finalize here!
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Ok(try!(self.finalize(t, substate, res)))
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}
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/// Calls contract function with given contract params.
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/// NOTE. It does not finalize the transaction (doesn't do refunds, nor suicides).
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/// Modifies the substate and the output.
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/// Returns either gas_left or `evm::Error`.
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pub fn call(&mut self, params: &ActionParams, substate: &mut Substate, mut output: BytesRef) -> evm::Result {
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// backup used in case of running out of gas
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let backup = self.state.clone();
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// at first, transfer value to destination
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self.state.transfer_balance(¶ms.sender, ¶ms.address, ¶ms.value);
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if self.engine.is_builtin(¶ms.address) {
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// if destination is builtin, try to execute it
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let cost = self.engine.cost_of_builtin(¶ms.address, ¶ms.data);
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match cost <= params.gas {
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true => {
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self.engine.execute_builtin(¶ms.address, ¶ms.data, &mut output);
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Ok(params.gas - cost)
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},
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// just drain the whole gas
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false => Ok(U256::zero())
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}
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} else if params.code.len() > 0 {
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// if destination is a contract, do normal message call
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// part of substate that may be reverted
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let mut unconfirmed_substate = Substate::new();
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let res = {
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let mut ext = Externalities::from_executive(self, params, &mut unconfirmed_substate, OutputPolicy::Return(output));
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let evm = Factory::create();
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evm.exec(¶ms, &mut ext)
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};
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self.enact_result(&res, substate, unconfirmed_substate, backup);
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res
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} else {
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// otherwise, nothing
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Ok(params.gas)
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}
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}
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/// Creates contract with given contract params.
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/// NOTE. It does not finalize the transaction (doesn't do refunds, nor suicides).
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/// Modifies the substate.
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fn create(&mut self, params: &ActionParams, substate: &mut Substate) -> evm::Result {
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// backup used in case of running out of gas
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let backup = self.state.clone();
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// part of substate that may be reverted
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let mut unconfirmed_substate = Substate::new();
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// at first create new contract
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self.state.new_contract(¶ms.address);
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// then transfer value to it
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self.state.transfer_balance(¶ms.sender, ¶ms.address, ¶ms.value);
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let res = {
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let mut ext = Externalities::from_executive(self, params, &mut unconfirmed_substate, OutputPolicy::InitContract);
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let evm = Factory::create();
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evm.exec(¶ms, &mut ext)
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};
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self.enact_result(&res, substate, unconfirmed_substate, backup);
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res
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}
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/// Finalizes the transaction (does refunds and suicides).
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fn finalize(&mut self, t: &Transaction, substate: Substate, result: evm::Result) -> ExecutionResult {
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let schedule = self.engine.schedule(self.info);
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// refunds from SSTORE nonzero -> zero
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let sstore_refunds = U256::from(schedule.sstore_refund_gas) * substate.refunds_count;
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// refunds from contract suicides
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let suicide_refunds = U256::from(schedule.suicide_refund_gas) * U256::from(substate.suicides.len());
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// real ammount to refund
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let gas_left = match &result { &Ok(x) => x, _ => x!(0) };
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let refund = cmp::min(sstore_refunds + suicide_refunds, (t.gas - gas_left) / U256::from(2)) + gas_left;
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let refund_value = refund * t.gas_price;
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trace!("Refunding sender: gas_left: {}, refund: {}, refund_value: {}, sender: {}", gas_left, refund, refund_value, t.sender().unwrap());
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self.state.add_balance(&t.sender().unwrap(), &refund_value);
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// fees earned by author
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let fees = t.gas - refund;
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let fees_value = fees * t.gas_price;
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let author = &self.info.author;
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self.state.add_balance(author, &fees_value);
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trace!("Compensating author: fees: {}, fees_value: {}, author: {}", fees, fees_value, author);
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// perform suicides
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for address in substate.suicides.iter() {
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trace!("Killing {}", address);
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self.state.kill_account(address);
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}
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let gas_used = t.gas - gas_left;
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match result {
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Err(evm::Error::Internal) => Err(ExecutionError::Internal),
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Ok(_) => {
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Ok(Executed {
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gas: t.gas,
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gas_used: gas_used,
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refunded: refund,
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cumulative_gas_used: self.info.gas_used + gas_used,
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logs: substate.logs,
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excepted: substate.excepted,
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contracts_created: substate.contracts_created
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})
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},
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_err => {
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Ok(Executed {
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gas: t.gas,
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gas_used: t.gas,
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refunded: U256::zero(),
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cumulative_gas_used: self.info.gas_used + t.gas,
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logs: vec![],
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excepted: true,
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contracts_created: vec![]
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})
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}
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}
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}
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fn enact_result(&mut self, result: &evm::Result, substate: &mut Substate, un_substate: Substate, backup: State) {
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// TODO: handle other evm::Errors same as OutOfGas once they are implemented
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match result {
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&Err(evm::Error::OutOfGas) => {
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substate.excepted = true;
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self.state.revert(backup);
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},
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&Ok(_) | &Err(evm::Error::Internal) => substate.accrue(un_substate)
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}
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}
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}
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/// Policy for handling output data on `RETURN` opcode.
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pub enum OutputPolicy<'a> {
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/// Return reference to fixed sized output.
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/// Used for message calls.
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Return(BytesRef<'a>),
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/// Init new contract as soon as `RETURN` is called.
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InitContract
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}
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/// Implementation of evm Externalities.
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pub struct Externalities<'a> {
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#[cfg(test)]
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pub state: &'a mut State,
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#[cfg(not(test))]
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state: &'a mut State,
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info: &'a EnvInfo,
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engine: &'a Engine,
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depth: usize,
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#[cfg(test)]
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pub params: &'a ActionParams,
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#[cfg(not(test))]
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params: &'a ActionParams,
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substate: &'a mut Substate,
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schedule: Schedule,
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output: OutputPolicy<'a>
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}
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impl<'a> Externalities<'a> {
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/// Basic `Externalities` constructor.
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pub fn new(state: &'a mut State,
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info: &'a EnvInfo,
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engine: &'a Engine,
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depth: usize,
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params: &'a ActionParams,
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substate: &'a mut Substate,
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output: OutputPolicy<'a>) -> Self {
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Externalities {
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state: state,
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info: info,
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engine: engine,
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depth: depth,
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params: params,
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substate: substate,
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schedule: engine.schedule(info),
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output: output
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}
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}
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/// Creates `Externalities` from `Executive`.
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fn from_executive(e: &'a mut Executive, params: &'a ActionParams, substate: &'a mut Substate, output: OutputPolicy<'a>) -> Self {
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Self::new(e.state, e.info, e.engine, e.depth, params, substate, output)
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}
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}
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impl<'a> Ext for Externalities<'a> {
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fn sload(&self, key: &H256) -> H256 {
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self.state.storage_at(&self.params.address, key)
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}
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fn sstore(&mut self, key: H256, value: H256) {
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// if SSTORE nonzero -> zero, increment refund count
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if value == H256::new() && self.state.storage_at(&self.params.address, &key) != H256::new() {
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self.substate.refunds_count = self.substate.refunds_count + U256::one();
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}
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self.state.set_storage(&self.params.address, key, value)
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}
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fn balance(&self, address: &Address) -> U256 {
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self.state.balance(address)
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}
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fn blockhash(&self, number: &U256) -> H256 {
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match *number < U256::from(self.info.number) && number.low_u64() >= cmp::max(256, self.info.number) - 256 {
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true => {
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let index = self.info.number - number.low_u64() - 1;
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self.info.last_hashes[index as usize].clone()
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},
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false => H256::from(&U256::zero()),
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}
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}
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fn create(&mut self, gas: &U256, value: &U256, code: &[u8]) -> (U256, Option<Address>) {
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// if balance is insufficient or we are to deep, return
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if self.state.balance(&self.params.address) < *value || self.depth >= self.schedule.max_depth {
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return (*gas, None);
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}
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// create new contract address
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let address = contract_address(&self.params.address, &self.state.nonce(&self.params.address));
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// prepare the params
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let params = ActionParams {
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address: address.clone(),
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sender: self.params.address.clone(),
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origin: self.params.origin.clone(),
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gas: *gas,
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gas_price: self.params.gas_price.clone(),
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value: value.clone(),
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code: code.to_vec(),
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data: vec![],
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};
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let mut ex = Executive::from_parent(self.state, self.info, self.engine, self.depth);
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ex.state.inc_nonce(&self.params.address);
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match ex.create(¶ms, self.substate) {
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Ok(gas_left) => (gas_left, Some(address)),
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_ => (U256::zero(), None)
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}
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}
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fn call(&mut self,
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gas: &U256,
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call_gas: &U256,
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receive_address: &Address,
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value: &U256,
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data: &[u8],
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code_address: &Address,
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output: &mut [u8]) -> Result<(U256, bool), evm::Error> {
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let mut gas_cost = *call_gas;
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let mut call_gas = *call_gas;
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let is_call = receive_address == code_address;
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if is_call && !self.state.exists(&code_address) {
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gas_cost = gas_cost + U256::from(self.schedule.call_new_account_gas);
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}
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if *value > U256::zero() {
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assert!(self.schedule.call_value_transfer_gas > self.schedule.call_stipend, "overflow possible");
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gas_cost = gas_cost + U256::from(self.schedule.call_value_transfer_gas);
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call_gas = call_gas + U256::from(self.schedule.call_stipend);
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}
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if gas_cost > *gas {
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return Err(evm::Error::OutOfGas);
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}
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let gas = *gas - gas_cost;
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// if balance is insufficient or we are to deep, return
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if self.state.balance(&self.params.address) < *value || self.depth >= self.schedule.max_depth {
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return Ok((gas + call_gas, true));
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}
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let params = ActionParams {
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address: receive_address.clone(),
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sender: self.params.address.clone(),
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origin: self.params.origin.clone(),
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gas: call_gas,
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gas_price: self.params.gas_price.clone(),
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value: value.clone(),
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code: self.state.code(code_address).unwrap_or(vec![]),
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data: data.to_vec(),
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};
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let mut ex = Executive::from_parent(self.state, self.info, self.engine, self.depth);
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match ex.call(¶ms, self.substate, BytesRef::Fixed(output)) {
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Ok(gas_left) => Ok((gas + gas_left, true)),
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_ => Ok((gas, false))
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}
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}
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fn extcode(&self, address: &Address) -> Vec<u8> {
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self.state.code(address).unwrap_or(vec![])
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}
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fn ret(&mut self, gas: &U256, data: &[u8]) -> Result<U256, evm::Error> {
|
|
match &mut self.output {
|
|
&mut OutputPolicy::Return(BytesRef::Fixed(ref mut slice)) => unsafe {
|
|
let len = cmp::min(slice.len(), data.len());
|
|
ptr::copy(data.as_ptr(), slice.as_mut_ptr(), len);
|
|
Ok(*gas)
|
|
},
|
|
&mut OutputPolicy::Return(BytesRef::Flexible(ref mut vec)) => unsafe {
|
|
vec.clear();
|
|
vec.reserve(data.len());
|
|
ptr::copy(data.as_ptr(), vec.as_mut_ptr(), data.len());
|
|
vec.set_len(data.len());
|
|
Ok(*gas)
|
|
},
|
|
&mut OutputPolicy::InitContract => {
|
|
let return_cost = U256::from(data.len()) * U256::from(self.schedule.create_data_gas);
|
|
if return_cost > *gas {
|
|
return match self.schedule.exceptional_failed_code_deposit {
|
|
true => Err(evm::Error::OutOfGas),
|
|
false => Ok(*gas)
|
|
}
|
|
}
|
|
let mut code = vec![];
|
|
code.reserve(data.len());
|
|
unsafe {
|
|
ptr::copy(data.as_ptr(), code.as_mut_ptr(), data.len());
|
|
code.set_len(data.len());
|
|
}
|
|
let address = &self.params.address;
|
|
self.state.init_code(address, code);
|
|
self.substate.contracts_created.push(address.clone());
|
|
Ok(*gas - return_cost)
|
|
}
|
|
}
|
|
}
|
|
|
|
fn log(&mut self, topics: Vec<H256>, data: Bytes) {
|
|
let address = self.params.address.clone();
|
|
self.substate.logs.push(LogEntry::new(address, topics, data));
|
|
}
|
|
|
|
fn suicide(&mut self, refund_address: &Address) {
|
|
let address = self.params.address.clone();
|
|
let balance = self.balance(&address);
|
|
self.state.transfer_balance(&address, refund_address, &balance);
|
|
self.substate.suicides.insert(address);
|
|
}
|
|
|
|
fn schedule(&self) -> &Schedule {
|
|
&self.schedule
|
|
}
|
|
|
|
fn env_info(&self) -> &EnvInfo {
|
|
&self.info
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
use common::*;
|
|
use state::*;
|
|
use ethereum;
|
|
use engine::*;
|
|
use spec::*;
|
|
use evm::Schedule;
|
|
|
|
struct TestEngine {
|
|
spec: Spec,
|
|
max_depth: usize
|
|
}
|
|
|
|
impl TestEngine {
|
|
fn new(max_depth: usize) -> TestEngine {
|
|
TestEngine {
|
|
spec: ethereum::new_frontier_test(),
|
|
max_depth: max_depth
|
|
}
|
|
}
|
|
}
|
|
|
|
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.max_depth = self.max_depth;
|
|
schedule
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_contract_address() {
|
|
let address = Address::from_str("0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6").unwrap();
|
|
let expected_address = Address::from_str("3f09c73a5ed19289fb9bdc72f1742566df146f56").unwrap();
|
|
assert_eq!(expected_address, contract_address(&address, &U256::from(88)));
|
|
}
|
|
|
|
#[test]
|
|
// TODO: replace params with transactions!
|
|
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(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 = TestEngine::new(0);
|
|
let mut substate = Substate::new();
|
|
|
|
let gas_left = {
|
|
let mut ex = Executive::new(&mut state, &info, &engine);
|
|
ex.create(¶ms, &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(¶ms, &mut substate).unwrap()
|
|
};
|
|
|
|
assert_eq!(gas_left, U256::from(62_976));
|
|
// ended with max depth
|
|
assert_eq!(substate.contracts_created.len(), 0);
|
|
}
|
|
|
|
#[test]
|
|
fn test_create_contract_value_too_high() {
|
|
// code:
|
|
//
|
|
// 7c 601080600c6000396000f3006000355415600957005b60203560003555 - push 29 bytes?
|
|
// 60 00 - push 0
|
|
// 52
|
|
// 60 1d - push 29
|
|
// 60 03 - push 3
|
|
// 60 e6 - push 230
|
|
// f0 - create a contract trying to send 230.
|
|
// 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 = "7c601080600c6000396000f3006000355415600957005b60203560003555600052601d600360e6f0600055".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(¶ms, &mut substate).unwrap()
|
|
};
|
|
|
|
assert_eq!(gas_left, U256::from(62_976));
|
|
assert_eq!(substate.contracts_created.len(), 0);
|
|
}
|
|
|
|
#[test]
|
|
fn test_create_contract_without_max_depth() {
|
|
// 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());
|
|
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(1024);
|
|
let mut substate = Substate::new();
|
|
|
|
{
|
|
let mut ex = Executive::new(&mut state, &info, &engine);
|
|
ex.create(¶ms, &mut substate).unwrap();
|
|
}
|
|
|
|
assert_eq!(substate.contracts_created.len(), 1);
|
|
assert_eq!(substate.contracts_created[0], next_address);
|
|
}
|
|
|
|
#[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(¶ms, &mut substate, BytesRef::Fixed(&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]
|
|
fn test_recursive_bomb1() {
|
|
// 60 01 - push 1
|
|
// 60 00 - push 0
|
|
// 54 - sload
|
|
// 01 - add
|
|
// 60 00 - push 0
|
|
// 55 - sstore
|
|
// 60 00 - push 0
|
|
// 60 00 - push 0
|
|
// 60 00 - push 0
|
|
// 60 00 - push 0
|
|
// 60 00 - push 0
|
|
// 30 - load address
|
|
// 60 e0 - push e0
|
|
// 5a - get gas
|
|
// 03 - sub
|
|
// f1 - message call (self in this case)
|
|
// 60 01 - push 1
|
|
// 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.gas = U256::from(100_000);
|
|
params.code = code.clone();
|
|
let mut state = State::new_temp();
|
|
state.init_code(&address, code.clone());
|
|
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(¶ms, &mut substate, BytesRef::Fixed(&mut [])).unwrap()
|
|
};
|
|
|
|
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)));
|
|
}
|
|
|
|
#[test]
|
|
fn test_transact_simple() {
|
|
let mut t = Transaction::new_create(U256::from(17), "3331600055".from_hex().unwrap(), U256::from(100_000), U256::zero(), U256::zero());
|
|
let keypair = KeyPair::create().unwrap();
|
|
t.sign(&keypair.secret());
|
|
let sender = t.sender().unwrap();
|
|
let contract = contract_address(&sender, &U256::zero());
|
|
|
|
let mut state = State::new_temp();
|
|
state.add_balance(&sender, &U256::from(18));
|
|
let mut info = EnvInfo::new();
|
|
info.gas_limit = U256::from(100_000);
|
|
let engine = TestEngine::new(0);
|
|
|
|
let executed = {
|
|
let mut ex = Executive::new(&mut state, &info, &engine);
|
|
ex.transact(&t).unwrap()
|
|
};
|
|
|
|
assert_eq!(executed.gas, U256::from(100_000));
|
|
assert_eq!(executed.gas_used, U256::from(41_301));
|
|
assert_eq!(executed.refunded, U256::from(58_699));
|
|
assert_eq!(executed.cumulative_gas_used, U256::from(41_301));
|
|
assert_eq!(executed.logs.len(), 0);
|
|
assert_eq!(executed.excepted, false);
|
|
assert_eq!(executed.contracts_created.len(), 0);
|
|
assert_eq!(state.balance(&sender), U256::from(1));
|
|
assert_eq!(state.balance(&contract), U256::from(17));
|
|
assert_eq!(state.nonce(&sender), U256::from(1));
|
|
assert_eq!(state.storage_at(&contract, &H256::new()), H256::from(&U256::from(1)));
|
|
}
|
|
|
|
#[test]
|
|
fn test_transact_invalid_sender() {
|
|
let t = Transaction::new_create(U256::from(17), "3331600055".from_hex().unwrap(), U256::from(100_000), U256::zero(), U256::zero());
|
|
|
|
let mut state = State::new_temp();
|
|
let mut info = EnvInfo::new();
|
|
info.gas_limit = U256::from(100_000);
|
|
let engine = TestEngine::new(0);
|
|
|
|
let res = {
|
|
let mut ex = Executive::new(&mut state, &info, &engine);
|
|
ex.transact(&t)
|
|
};
|
|
|
|
match res {
|
|
Err(Error::Util(UtilError::Crypto(CryptoError::InvalidSignature))) => (),
|
|
_ => assert!(false, "Expected invalid signature error.")
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_transact_invalid_nonce() {
|
|
let mut t = Transaction::new_create(U256::from(17), "3331600055".from_hex().unwrap(), U256::from(100_000), U256::zero(), U256::one());
|
|
let keypair = KeyPair::create().unwrap();
|
|
t.sign(&keypair.secret());
|
|
let sender = t.sender().unwrap();
|
|
|
|
let mut state = State::new_temp();
|
|
state.add_balance(&sender, &U256::from(17));
|
|
let mut info = EnvInfo::new();
|
|
info.gas_limit = U256::from(100_000);
|
|
let engine = TestEngine::new(0);
|
|
|
|
let res = {
|
|
let mut ex = Executive::new(&mut state, &info, &engine);
|
|
ex.transact(&t)
|
|
};
|
|
|
|
match res {
|
|
Err(Error::Execution(ExecutionError::InvalidNonce { expected, is }))
|
|
if expected == U256::zero() && is == U256::one() => (),
|
|
_ => assert!(false, "Expected invalid nonce error.")
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_transact_gas_limit_reached() {
|
|
let mut t = Transaction::new_create(U256::from(17), "3331600055".from_hex().unwrap(), U256::from(80_001), U256::zero(), U256::zero());
|
|
let keypair = KeyPair::create().unwrap();
|
|
t.sign(&keypair.secret());
|
|
let sender = t.sender().unwrap();
|
|
|
|
let mut state = State::new_temp();
|
|
state.add_balance(&sender, &U256::from(17));
|
|
let mut info = EnvInfo::new();
|
|
info.gas_used = U256::from(20_000);
|
|
info.gas_limit = U256::from(100_000);
|
|
let engine = TestEngine::new(0);
|
|
|
|
let res = {
|
|
let mut ex = Executive::new(&mut state, &info, &engine);
|
|
ex.transact(&t)
|
|
};
|
|
|
|
match res {
|
|
Err(Error::Execution(ExecutionError::BlockGasLimitReached { gas_limit, gas_used, gas }))
|
|
if gas_limit == U256::from(100_000) && gas_used == U256::from(20_000) && gas == U256::from(80_001) => (),
|
|
_ => assert!(false, "Expected block gas limit error.")
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_not_enough_cash() {
|
|
let mut t = Transaction::new_create(U256::from(18), "3331600055".from_hex().unwrap(), U256::from(100_000), U256::one(), U256::zero());
|
|
let keypair = KeyPair::create().unwrap();
|
|
t.sign(&keypair.secret());
|
|
let sender = t.sender().unwrap();
|
|
|
|
let mut state = State::new_temp();
|
|
state.add_balance(&sender, &U256::from(100_017));
|
|
let mut info = EnvInfo::new();
|
|
info.gas_limit = U256::from(100_000);
|
|
let engine = TestEngine::new(0);
|
|
|
|
let res = {
|
|
let mut ex = Executive::new(&mut state, &info, &engine);
|
|
ex.transact(&t)
|
|
};
|
|
|
|
match res {
|
|
Err(Error::Execution(ExecutionError::NotEnoughCash { required , is }))
|
|
if required == U512::from(100_018) && is == U512::from(100_017) => (),
|
|
_ => assert!(false, "Expected not enough cash error. {:?}", res)
|
|
}
|
|
}
|
|
}
|