openethereum/src/evm/executive.rs

613 lines
18 KiB
Rust
Raw Normal View History

2016-01-11 02:42:02 +01:00
//! Transaction Execution environment.
2016-01-09 21:39:38 +01:00
use std::collections::HashSet;
2016-01-09 22:54:16 +01:00
use std::cmp;
2016-01-11 02:17:29 +01:00
use std::ptr;
2016-01-07 21:29:36 +01:00
use util::hash::*;
use util::uint::*;
2016-01-07 23:33:54 +01:00
use util::rlp::*;
use util::sha3::*;
2016-01-09 00:51:09 +01:00
use util::bytes::*;
2016-01-07 19:05:44 +01:00
use state::*;
use env_info::*;
2016-01-11 02:17:29 +01:00
use evm_schedule::*;
2016-01-07 19:05:44 +01:00
use engine::*;
use transaction::*;
2016-01-11 02:17:29 +01:00
use evm::{VmFactory, Ext, LogEntry, EvmParams, EvmResult, EvmError};
2016-01-07 23:33:54 +01:00
2016-01-09 00:51:09 +01:00
/// Returns new address created from address and given nonce.
2016-01-08 00:16:15 +01:00
pub fn contract_address(address: &Address, nonce: &U256) -> Address {
2016-01-07 23:33:54 +01:00
let mut stream = RlpStream::new_list(2);
stream.append(address);
stream.append(nonce);
From::from(stream.out().sha3())
}
2016-01-07 19:05:44 +01:00
2016-01-09 21:39:38 +01:00
/// State changes which should be applied in finalize,
/// after transaction is fully executed.
pub struct Substate {
/// Any accounts that have suicided.
suicides: HashSet<Address>,
/// Any logs.
logs: Vec<LogEntry>,
/// Refund counter of SSTORE nonzero->zero.
2016-01-09 22:54:16 +01:00
refunds_count: U256,
2016-01-09 21:39:38 +01:00
}
impl Substate {
/// Creates new substate.
pub fn new() -> Self {
Substate {
suicides: HashSet::new(),
logs: vec![],
2016-01-09 22:54:16 +01:00
refunds_count: U256::zero(),
2016-01-09 21:39:38 +01:00
}
}
2016-01-11 02:17:29 +01:00
// TODO: remove
2016-01-09 23:24:01 +01:00
pub fn logs(&self) -> &[LogEntry] {
&self.logs
}
2016-01-09 21:39:38 +01:00
/// Appends another substate to this substate.
fn accrue(&mut self, s: Substate) {
self.suicides.extend(s.suicides.into_iter());
self.logs.extend(s.logs.into_iter());
2016-01-09 22:54:16 +01:00
self.refunds_count = self.refunds_count + s.refunds_count;
2016-01-09 21:39:38 +01:00
}
}
2016-01-11 02:17:29 +01:00
/// Transaction execution result.
pub struct Executed {
/// Gas paid up front for execution of transaction.
pub gas: U256,
/// Gas used during execution of transaction.
pub gas_used: U256,
/// Gas refunded after the execution of transaction.
/// To get gas that was required up front, add `refunded` and `gas_used`.
pub refunded: U256,
/// Cumulative gas used in current block so far.
///
/// cumulative_gas_used = gas_used(t0) + gas_used(t1) + ... gas_used(tn)
///
/// where `tn` is current transaction.
pub cumulative_gas_used: U256,
/// Transaction output.
pub output: Bytes,
/// Vector of logs generated by transaction.
pub logs: Vec<LogEntry>
}
impl Executed {
fn new() -> Executed {
Executed {
gas: U256::zero(),
gas_used: U256::zero(),
refunded: U256::zero(),
cumulative_gas_used: U256::zero(),
output: vec![],
logs: vec![]
}
}
}
/// Result of executing the transaction.
2016-01-09 13:51:59 +01:00
#[derive(PartialEq, Debug)]
2016-01-11 02:17:29 +01:00
pub enum ExecutionError {
/// Returned when block (gas_used + gas) > gas_limit.
///
/// If gas =< gas_limit, upstream may try to execute the transaction
/// in next block.
2016-01-10 12:29:35 +01:00
BlockGasLimitReached { gas_limit: U256, gas_used: U256, gas: U256 },
2016-01-11 02:17:29 +01:00
/// Returned when transaction nonce does not match state nonce.
2016-01-10 12:29:35 +01:00
InvalidNonce { expected: U256, is: U256 },
2016-01-11 02:17:29 +01:00
/// Returned when cost of transaction (value + gas_price * gas) exceeds
/// current sender balance.
2016-01-10 12:29:35 +01:00
NotEnoughCash { required: U256, is: U256 },
2016-01-11 02:17:29 +01:00
/// Returned when internal evm error occurs.
Internal
2016-01-07 19:05:44 +01:00
}
2016-01-11 02:17:29 +01:00
pub type ExecutionResult = Result<Executed, ExecutionError>;
2016-01-09 22:54:16 +01:00
/// Message-call/contract-creation executor; useful for executing transactions.
2016-01-07 19:05:44 +01:00
pub struct Executive<'a> {
state: &'a mut State,
info: &'a EnvInfo,
engine: &'a Engine,
2016-01-09 00:51:09 +01:00
depth: usize,
2016-01-07 19:05:44 +01:00
}
impl<'a> Executive<'a> {
2016-01-09 21:39:38 +01:00
/// Creates new executive with depth equal 0.
2016-01-09 17:55:47 +01:00
pub fn new(state: &'a mut State, info: &'a EnvInfo, engine: &'a Engine) -> Self {
Executive::new_with_depth(state, info, engine, 0)
}
2016-01-09 00:51:09 +01:00
2016-01-09 21:39:38 +01:00
/// Populates executive from parent externalities. Increments executive depth.
2016-01-09 17:55:47 +01:00
fn from_parent(e: &'a mut Externalities) -> Self {
Executive::new_with_depth(e.state, e.info, e.engine, e.depth + 1)
2016-01-09 00:51:09 +01:00
}
2016-01-09 21:39:38 +01:00
/// Helper constructor. Should be used to create `Executive` with desired depth.
/// Private.
2016-01-09 17:55:47 +01:00
fn new_with_depth(state: &'a mut State, info: &'a EnvInfo, engine: &'a Engine, depth: usize) -> Self {
2016-01-07 19:05:44 +01:00
Executive {
state: state,
info: info,
engine: engine,
2016-01-09 17:55:47 +01:00
depth: depth,
2016-01-07 19:05:44 +01:00
}
}
2016-01-09 21:39:38 +01:00
/// This funtion should be used to execute transaction.
2016-01-11 02:42:02 +01:00
pub fn transact(&mut self, t: &Transaction) -> ExecutionResult {
2016-01-11 02:17:29 +01:00
// TODO: validate transaction signature ?/ sender
2016-01-10 12:29:35 +01:00
2016-01-09 17:55:47 +01:00
let sender = t.sender();
2016-01-11 02:42:02 +01:00
let nonce = self.state.nonce(&sender);
2016-01-10 12:29:35 +01:00
// validate transaction nonce
if t.nonce != nonce {
2016-01-11 02:17:29 +01:00
return Err(ExecutionError::InvalidNonce { expected: nonce, is: t.nonce });
2016-01-10 12:29:35 +01:00
}
2016-01-11 02:17:29 +01:00
// validate if transaction fits into given block
2016-01-11 02:42:02 +01:00
if self.info.gas_used + t.gas > self.info.gas_limit {
2016-01-11 02:17:29 +01:00
return Err(ExecutionError::BlockGasLimitReached {
2016-01-11 02:42:02 +01:00
gas_limit: self.info.gas_limit,
gas_used: self.info.gas_used,
2016-01-11 02:17:29 +01:00
gas: t.gas
});
}
2016-01-10 12:29:35 +01:00
// TODO: we might need bigints here, or at least check overflows.
2016-01-11 02:42:02 +01:00
let balance = self.state.balance(&sender);
2016-01-10 12:29:35 +01:00
let gas_cost = t.gas * t.gas_price;
let total_cost = t.value + gas_cost;
// avoid unaffordable transactions
if balance < total_cost {
2016-01-11 02:17:29 +01:00
return Err(ExecutionError::NotEnoughCash { required: total_cost, is: balance });
2016-01-10 12:29:35 +01:00
}
2016-01-07 21:29:36 +01:00
2016-01-11 02:17:29 +01:00
// NOTE: there can be no invalid transactions from this point.
2016-01-11 02:42:02 +01:00
self.state.inc_nonce(&sender);
2016-01-09 21:39:38 +01:00
let mut substate = Substate::new();
let res = match t.kind() {
2016-01-09 17:55:47 +01:00
TransactionKind::ContractCreation => {
let params = EvmParams {
2016-01-10 12:29:35 +01:00
address: contract_address(&sender, &nonce),
2016-01-09 17:55:47 +01:00
sender: sender.clone(),
origin: sender.clone(),
gas: t.gas,
gas_price: t.gas_price,
value: t.value,
code: t.data.clone(),
data: vec![],
};
2016-01-11 02:42:02 +01:00
self.call(&params, &mut substate, &mut [])
2016-01-09 00:51:09 +01:00
},
2016-01-09 17:55:47 +01:00
TransactionKind::MessageCall => {
let params = EvmParams {
address: t.to.clone().unwrap(),
sender: sender.clone(),
origin: sender.clone(),
gas: t.gas,
gas_price: t.gas_price,
value: t.value,
2016-01-11 02:42:02 +01:00
code: self.state.code(&t.to.clone().unwrap()).unwrap_or(vec![]),
2016-01-09 17:55:47 +01:00
data: t.data.clone(),
};
2016-01-11 02:42:02 +01:00
self.create(&params, &mut substate)
2016-01-09 17:55:47 +01:00
}
2016-01-09 21:39:38 +01:00
};
// finalize here!
2016-01-11 02:42:02 +01:00
self.finalize(substate, &sender, U256::zero(), U256::zero(), t.gas_price);
2016-01-11 02:17:29 +01:00
//res
Ok(Executed::new())
2016-01-07 19:05:44 +01:00
}
2016-01-09 21:39:38 +01:00
/// Calls contract function with given contract params.
2016-01-11 02:17:29 +01:00
/// NOTE. It does not finalize the transaction (doesn't do refunds, nor suicides).
/// Modifies the substate and the output.
/// Returns either gas_left or `EvmError`.
2016-01-11 02:42:02 +01:00
fn call(&mut self, params: &EvmParams, substate: &mut Substate, output: &mut [u8]) -> EvmResult {
2016-01-09 22:54:16 +01:00
// at first, transfer value to destination
2016-01-11 02:42:02 +01:00
self.state.transfer_balance(&params.sender, &params.address, &params.value);
2016-01-09 22:54:16 +01:00
2016-01-11 02:42:02 +01:00
if self.engine.is_builtin(&params.address) {
2016-01-11 02:17:29 +01:00
// if destination is builtin, try to execute it
2016-01-11 02:42:02 +01:00
let cost = self.engine.cost_of_builtin(&params.address, &params.data);
2016-01-11 02:17:29 +01:00
match cost <= params.gas {
true => {
2016-01-11 02:42:02 +01:00
self.engine.execute_builtin(&params.address, &params.data, output);
2016-01-11 02:17:29 +01:00
Ok(params.gas - cost)
2016-01-09 22:54:16 +01:00
},
2016-01-11 02:17:29 +01:00
false => Err(EvmError::OutOfGas)
2016-01-09 22:54:16 +01:00
}
2016-01-11 02:17:29 +01:00
} else if params.code.len() > 0 {
// if destination is a contract, do normal message call
2016-01-11 02:42:02 +01:00
let mut ext = Externalities::new(self.state, self.info, self.engine, self.depth, params, substate, OutputPolicy::Return(output));
2016-01-11 02:17:29 +01:00
let evm = VmFactory::create();
evm.exec(&params, &mut ext)
} else {
// otherwise, nothing
Ok(params.gas)
2016-01-09 22:54:16 +01:00
}
2016-01-07 19:05:44 +01:00
}
2016-01-09 02:12:17 +01:00
2016-01-09 21:39:38 +01:00
/// Creates contract with given contract params.
2016-01-11 02:17:29 +01:00
/// NOTE. It does not finalize the transaction (doesn't do refunds, nor suicides).
/// Modifies the substate.
2016-01-11 02:42:02 +01:00
fn create(&mut self, params: &EvmParams, substate: &mut Substate) -> EvmResult {
2016-01-09 22:54:16 +01:00
// at first create new contract
2016-01-11 02:42:02 +01:00
self.state.new_contract(&params.address);
2016-01-09 22:54:16 +01:00
// then transfer value to it
2016-01-11 02:42:02 +01:00
self.state.transfer_balance(&params.sender, &params.address, &params.value);
2016-01-09 17:55:47 +01:00
2016-01-11 02:42:02 +01:00
let mut ext = Externalities::new(self.state, self.info, self.engine, self.depth, params, substate, OutputPolicy::InitContract);
2016-01-11 02:17:29 +01:00
let evm = VmFactory::create();
evm.exec(&params, &mut ext)
2016-01-07 19:05:44 +01:00
}
2016-01-09 21:39:38 +01:00
2016-01-09 22:54:16 +01:00
/// Finalizes the transaction (does refunds and suicides).
2016-01-10 12:29:35 +01:00
fn finalize(&mut self, substate: Substate, sender: &Address, gas: U256, gas_left: U256, gas_price: U256) {
2016-01-09 22:54:16 +01:00
let schedule = self.engine.evm_schedule(self.info);
// refunds from SSTORE nonzero -> zero
let sstore_refunds = U256::from(schedule.sstore_refund_gas) * substate.refunds_count;
// refunds from contract suicides
let suicide_refunds = U256::from(schedule.suicide_refund_gas) * U256::from(substate.suicides.len());
2016-01-10 12:29:35 +01:00
2016-01-09 22:54:16 +01:00
// real ammount to refund
2016-01-10 12:29:35 +01:00
let refund = cmp::min(sstore_refunds + suicide_refunds, (gas - gas_left) / U256::from(2)) + gas_left;
let refund_value = refund * gas_price;
self.state.add_balance(sender, &refund_value);
// fees earned by author
let fees = (gas - refund) * gas_price;
let author = &self.info.author;
self.state.add_balance(author, &fees);
2016-01-09 22:54:16 +01:00
// perform suicides
2016-01-09 23:24:01 +01:00
for address in substate.suicides.iter() {
self.state.kill_account(address);
}
2016-01-09 21:39:38 +01:00
}
2016-01-09 17:55:47 +01:00
}
2016-01-11 02:17:29 +01:00
pub enum ExtMode {
Call,
Create
}
2016-01-11 02:47:45 +01:00
/// Policy for handling output data on `RETURN` opcode.
2016-01-11 02:17:29 +01:00
pub enum OutputPolicy<'a> {
2016-01-11 02:47:45 +01:00
/// Return reference to fixed sized output.
/// Used for message calls.
2016-01-11 02:17:29 +01:00
Return(&'a mut [u8]),
2016-01-11 02:47:45 +01:00
/// Init new contract as soon as `RETURN` is called.
2016-01-11 02:17:29 +01:00
InitContract
}
2016-01-09 21:39:38 +01:00
/// Implementation of evm Externalities.
2016-01-09 17:55:47 +01:00
pub struct Externalities<'a> {
state: &'a mut State,
info: &'a EnvInfo,
engine: &'a Engine,
depth: usize,
params: &'a EvmParams,
2016-01-11 02:17:29 +01:00
substate: &'a mut Substate,
schedule: EvmSchedule,
output: OutputPolicy<'a>
2016-01-09 17:55:47 +01:00
}
impl<'a> Externalities<'a> {
2016-01-09 21:39:38 +01:00
/// Basic `Externalities` constructor.
2016-01-11 02:17:29 +01:00
pub fn new(state: &'a mut State,
info: &'a EnvInfo,
engine: &'a Engine,
depth: usize,
params: &'a EvmParams,
substate: &'a mut Substate,
output: OutputPolicy<'a>) -> Self {
2016-01-09 17:55:47 +01:00
Externalities {
state: state,
info: info,
engine: engine,
depth: depth,
params: params,
2016-01-11 02:17:29 +01:00
substate: substate,
schedule: engine.evm_schedule(info),
output: output
2016-01-09 17:55:47 +01:00
}
}
2016-01-09 00:51:09 +01:00
}
2016-01-09 17:55:47 +01:00
impl<'a> Ext for Externalities<'a> {
2016-01-09 00:51:09 +01:00
fn sload(&self, key: &H256) -> H256 {
self.state.storage_at(&self.params.address, key)
}
fn sstore(&mut self, key: H256, value: H256) {
2016-01-09 23:24:01 +01:00
// if SSTORE nonzero -> zero, increment refund count
2016-01-09 00:51:09 +01:00
if value == H256::new() && self.state.storage_at(&self.params.address, &key) != H256::new() {
2016-01-09 22:54:16 +01:00
self.substate.refunds_count = self.substate.refunds_count + U256::one();
2016-01-09 00:51:09 +01:00
}
self.state.set_storage(&self.params.address, key, value)
}
fn balance(&self, address: &Address) -> U256 {
self.state.balance(address)
}
fn blockhash(&self, number: &U256) -> H256 {
match *number < self.info.number {
false => H256::from(&U256::zero()),
true => {
let index = self.info.number - *number - U256::one();
self.info.last_hashes[index.low_u32() as usize].clone()
}
}
}
2016-01-11 02:42:02 +01:00
fn create(&mut self, gas: u64, endowment: &U256, code: &[u8]) -> Option<(u64, Address)> {
// if balance is insufficient or we are to deep, return
if self.state.balance(&self.params.address) < *endowment && self.depth >= 1024 {
return None
}
// create new contract address
let address = contract_address(&self.params.address, &self.state.nonce(&self.params.address));
// prepare the params
let params = EvmParams {
address: address.clone(),
sender: self.params.address.clone(),
origin: self.params.origin.clone(),
gas: U256::from(gas),
gas_price: self.params.gas_price.clone(),
value: endowment.clone(),
code: code.to_vec(),
data: vec![],
};
let mut substate = Substate::new();
{
let mut ex = Executive::from_parent(self);
ex.state.inc_nonce(&address);
2016-01-11 02:42:02 +01:00
let res = ex.create(&params, &mut substate);
2016-01-09 00:51:09 +01:00
}
self.substate.accrue(substate);
2016-01-11 02:42:02 +01:00
Some((gas, address))
2016-01-09 00:51:09 +01:00
}
2016-01-11 02:42:02 +01:00
fn call(&mut self, gas: u64, call_gas: u64, receive_address: &Address, value: &U256, data: &[u8], code_address: &Address, output: &mut [u8]) -> Option<u64> {
2016-01-09 00:51:09 +01:00
// TODO: validation of the call
println!("gas: {:?}", gas);
println!("call_gas: {:?}", call_gas);
let mut gas_cost = call_gas;
let mut call_gas = call_gas;
let is_call = receive_address == code_address;
if is_call && self.state.code(&code_address).is_none() {
2016-01-11 02:17:29 +01:00
gas_cost = gas_cost + self.schedule.call_new_account_gas as u64;
}
if *value > U256::zero() {
2016-01-11 02:17:29 +01:00
assert!(self.schedule.call_value_transfer_gas > self.schedule.call_stipend, "overflow possible");
gas_cost = gas_cost + self.schedule.call_value_transfer_gas as u64;
call_gas = call_gas + self.schedule.call_stipend as u64;
}
if gas_cost > gas {
// TODO: maybe gas should always be updated?
return None;
}
// if we are too deep, return
// TODO: replace with >= 1024
if self.depth == 1 {
return None;
}
2016-01-09 00:51:09 +01:00
let params = EvmParams {
address: receive_address.clone(),
sender: self.params.address.clone(),
2016-01-09 00:51:09 +01:00
origin: self.params.origin.clone(),
gas: U256::from(call_gas),
2016-01-09 00:51:09 +01:00
gas_price: self.params.gas_price.clone(),
value: value.clone(),
code: self.state.code(code_address).unwrap_or(vec![]),
data: data.to_vec(),
};
println!("params: {:?}", params);
2016-01-09 21:39:38 +01:00
let mut substate = Substate::new();
2016-01-09 00:51:09 +01:00
{
2016-01-09 17:55:47 +01:00
let mut ex = Executive::from_parent(self);
2016-01-11 02:17:29 +01:00
// TODO: take output into account
2016-01-11 02:42:02 +01:00
ex.call(&params, &mut substate, output);
2016-01-09 00:51:09 +01:00
}
2016-01-11 02:17:29 +01:00
self.substate.accrue(substate);
// TODO: replace call_gas with what's actually left
2016-01-11 02:42:02 +01:00
Some(gas - gas_cost + call_gas)
2016-01-09 00:51:09 +01:00
}
fn extcode(&self, address: &Address) -> Vec<u8> {
self.state.code(address).unwrap_or(vec![])
}
2016-01-11 02:17:29 +01:00
fn ret(&mut self, gas: u64, data: &[u8]) -> Option<u64> {
match &mut self.output {
&mut OutputPolicy::Return(ref mut slice) => unsafe {
let len = cmp::min(slice.len(), data.len());
ptr::copy(data.as_ptr(), slice.as_mut_ptr(), len);
Some(gas)
},
&mut OutputPolicy::InitContract => {
let return_cost = data.len() as u64 * self.schedule.create_data_gas as u64;
if return_cost > gas {
return None;
}
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);
Some(gas - return_cost)
}
}
}
2016-01-09 00:51:09 +01:00
fn log(&mut self, topics: Vec<H256>, data: Bytes) {
let address = self.params.address.clone();
2016-01-09 21:39:38 +01:00
self.substate.logs.push(LogEntry::new(address, topics, data));
2016-01-09 00:51:09 +01:00
}
2016-01-11 02:17:29 +01:00
fn suicide(&mut self) {
let address = self.params.address.clone();
self.substate.suicides.insert(address);
}
fn schedule(&self) -> &EvmSchedule {
&self.schedule
}
2016-01-07 19:05:44 +01:00
}
2016-01-07 23:33:54 +01:00
#[cfg(test)]
mod tests {
2016-01-09 01:33:50 +01:00
use rustc_serialize::hex::FromHex;
2016-01-07 23:33:54 +01:00
use std::str::FromStr;
use util::hash::*;
use util::uint::*;
2016-01-09 01:33:50 +01:00
use evm::*;
use transaction::*;
use env_info::*;
use state::*;
use spec::*;
use engine::*;
use evm_schedule::*;
2016-01-09 02:12:17 +01:00
use super::contract_address;
use ethereum;
use null_engine::*;
use std::ops::*;
2016-01-09 01:33:50 +01:00
2016-01-07 23:33:54 +01:00
#[test]
fn test_contract_address() {
let address = Address::from_str("0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6").unwrap();
2016-01-09 02:12:17 +01:00
let expected_address = Address::from_str("3f09c73a5ed19289fb9bdc72f1742566df146f56").unwrap();
assert_eq!(expected_address, contract_address(&address, &U256::from(88)));
2016-01-07 23:33:54 +01:00
}
2016-01-09 01:33:50 +01:00
#[test]
2016-01-09 13:51:59 +01:00
// TODO: replace params with transactions!
2016-01-09 01:33:50 +01:00
fn test_executive() {
2016-01-09 02:12:17 +01:00
let sender = Address::from_str("0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6").unwrap();
let address = contract_address(&sender, &U256::zero());
2016-01-09 17:55:47 +01:00
let mut params = EvmParams::new();
2016-01-09 02:12:17 +01:00
params.address = address.clone();
params.sender = sender.clone();
params.gas = U256::from(0x174876e800u64);
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());
2016-01-09 21:39:38 +01:00
let mut substate = Substate::new();
2016-01-09 02:12:17 +01:00
{
let mut ex = Executive::new(&mut state, &info, engine.deref());
let _res = ex.create(&params, &mut substate);
2016-01-09 02:12:17 +01:00
}
2016-01-09 13:51:59 +01:00
assert_eq!(state.storage_at(&address, &H256::new()), H256::from(&U256::from(0xf9u64)));
2016-01-09 02:12:17 +01:00
assert_eq!(state.balance(&sender), U256::from(0xf9));
assert_eq!(state.balance(&address), U256::from(0x7));
2016-01-09 01:33:50 +01:00
}
2016-01-09 13:51:59 +01:00
#[test]
fn test_create_contract() {
let sender = Address::from_str("cd1722f3947def4cf144679da39c4c32bdc35681").unwrap();
let address = contract_address(&sender, &U256::zero());
let next_address = contract_address(&address, &U256::zero());
2016-01-09 17:55:47 +01:00
let mut params = EvmParams::new();
2016-01-09 13:51:59 +01:00
params.address = address.clone();
params.sender = sender.clone();
params.origin = sender.clone();
params.gas = U256::from(0x174876e800u64);
params.code = "7c601080600c6000396000f3006000355415600957005b60203560003555600052601d60036000f0600055".from_hex().unwrap();
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());
2016-01-09 21:39:38 +01:00
let mut substate = Substate::new();
2016-01-09 13:51:59 +01:00
{
let mut ex = Executive::new(&mut state, &info, engine.deref());
let _res = ex.create(&params, &mut substate);
2016-01-09 13:51:59 +01:00
}
assert_eq!(state.storage_at(&address, &H256::new()), H256::from(next_address.clone()));
assert_eq!(state.code(&next_address).unwrap(), "6000355415600957005b602035600035".from_hex().unwrap());
//assert!(false);
}
#[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 - store
let sender = Address::from_str("cd1722f3947def4cf144679da39c4c32bdc35681").unwrap();
let code = "600160005401600055600060006000600060003360e05a03f1600155".from_hex().unwrap();
let address = contract_address(&sender, &U256::zero());
let mut params = EvmParams::new();
params.address = address.clone();
params.sender = sender.clone();
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 mut substate = Substate::new();
{
let mut ex = Executive::new(&mut state, &info, engine.deref());
let _res = ex.call(&params, &mut substate, &mut []);
}
assert!(false);
2016-01-09 13:51:59 +01:00
}
2016-01-07 23:33:54 +01:00
}