// Copyright 2015-2020 Parity Technologies (UK) Ltd. // This file is part of OpenEthereum. // OpenEthereum is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // OpenEthereum is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with OpenEthereum. If not, see . //! Transaction Execution environment. use bytes::{Bytes, BytesRef}; use ethereum_types::{Address, H256, U256, U512}; use evm::{CallType, FinalizationResult, Finalize}; use executed::ExecutionError; pub use executed::{Executed, ExecutionResult}; use externalities::*; use factory::VmFactory; use hash::keccak; use machine::EthereumMachine as Machine; use state::{Backend as StateBackend, CleanupMode, State, Substate}; use std::{cmp, convert::TryFrom, sync::Arc}; use trace::{self, Tracer, VMTracer}; use transaction_ext::Transaction; use types::transaction::{Action, SignedTransaction, TypedTransaction}; use vm::{ self, AccessList, ActionParams, ActionValue, CleanDustMode, CreateContractAddress, EnvInfo, ResumeCall, ResumeCreate, ReturnData, Schedule, TrapError, }; #[cfg(any(test, feature = "test-helpers"))] /// Precompile that can never be prunned from state trie (0x3, only in tests) const UNPRUNABLE_PRECOMPILE_ADDRESS: Option
= Some(ethereum_types::H160([ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, ])); #[cfg(not(any(test, feature = "test-helpers")))] /// Precompile that can never be prunned from state trie (none) const UNPRUNABLE_PRECOMPILE_ADDRESS: Option
= None; /// Returns new address created from address, nonce, and code hash pub fn contract_address( address_scheme: CreateContractAddress, sender: &Address, nonce: &U256, code: &[u8], ) -> (Address, Option) { use rlp::RlpStream; match address_scheme { CreateContractAddress::FromSenderAndNonce => { let mut stream = RlpStream::new_list(2); stream.append(sender); stream.append(nonce); (From::from(keccak(stream.as_raw())), None) } CreateContractAddress::FromSenderSaltAndCodeHash(salt) => { let code_hash = keccak(code); let mut buffer = [0u8; 1 + 20 + 32 + 32]; buffer[0] = 0xff; &mut buffer[1..(1 + 20)].copy_from_slice(&sender[..]); &mut buffer[(1 + 20)..(1 + 20 + 32)].copy_from_slice(&salt[..]); &mut buffer[(1 + 20 + 32)..].copy_from_slice(&code_hash[..]); (From::from(keccak(&buffer[..])), Some(code_hash)) } CreateContractAddress::FromSenderAndCodeHash => { let code_hash = keccak(code); let mut buffer = [0u8; 20 + 32]; &mut buffer[..20].copy_from_slice(&sender[..]); &mut buffer[20..].copy_from_slice(&code_hash[..]); (From::from(keccak(&buffer[..])), Some(code_hash)) } } } /// Convert a finalization result into a VM message call result. pub fn into_message_call_result(result: vm::Result) -> vm::MessageCallResult { match result { Ok(FinalizationResult { gas_left, return_data, apply_state: true, }) => vm::MessageCallResult::Success(gas_left, return_data), Ok(FinalizationResult { gas_left, return_data, apply_state: false, }) => vm::MessageCallResult::Reverted(gas_left, return_data), _ => vm::MessageCallResult::Failed, } } /// Convert a finalization result into a VM contract create result. pub fn into_contract_create_result( result: vm::Result, address: &Address, substate: &mut Substate, ) -> vm::ContractCreateResult { match result { Ok(FinalizationResult { gas_left, apply_state: true, .. }) => { substate.contracts_created.push(address.clone()); vm::ContractCreateResult::Created(address.clone(), gas_left) } Ok(FinalizationResult { gas_left, apply_state: false, return_data, }) => vm::ContractCreateResult::Reverted(gas_left, return_data), _ => vm::ContractCreateResult::Failed, } } /// Transaction execution options. #[derive(Copy, Clone, PartialEq)] pub struct TransactOptions { /// Enable call tracing. pub tracer: T, /// Enable VM tracing. pub vm_tracer: V, /// Check transaction nonce before execution. pub check_nonce: bool, /// Records the output from init contract calls. pub output_from_init_contract: bool, } impl TransactOptions { /// Create new `TransactOptions` with given tracer and VM tracer. pub fn new(tracer: T, vm_tracer: V) -> Self { TransactOptions { tracer, vm_tracer, check_nonce: true, output_from_init_contract: false, } } /// Disables the nonce check pub fn dont_check_nonce(mut self) -> Self { self.check_nonce = false; self } /// Saves the output from contract creation. pub fn save_output_from_contract(mut self) -> Self { self.output_from_init_contract = true; self } } impl TransactOptions { /// Creates new `TransactOptions` with default tracing and VM tracing. pub fn with_tracing_and_vm_tracing() -> Self { TransactOptions { tracer: trace::ExecutiveTracer::default(), vm_tracer: trace::ExecutiveVMTracer::toplevel(), check_nonce: true, output_from_init_contract: false, } } } impl TransactOptions { /// Creates new `TransactOptions` with default tracing and no VM tracing. pub fn with_tracing() -> Self { TransactOptions { tracer: trace::ExecutiveTracer::default(), vm_tracer: trace::NoopVMTracer, check_nonce: true, output_from_init_contract: false, } } } impl TransactOptions { /// Creates new `TransactOptions` with no tracing and default VM tracing. pub fn with_vm_tracing() -> Self { TransactOptions { tracer: trace::NoopTracer, vm_tracer: trace::ExecutiveVMTracer::toplevel(), check_nonce: true, output_from_init_contract: false, } } } impl TransactOptions { /// Creates new `TransactOptions` without any tracing. pub fn with_no_tracing() -> Self { TransactOptions { tracer: trace::NoopTracer, vm_tracer: trace::NoopVMTracer, check_nonce: true, output_from_init_contract: false, } } } /// Trap result returned by executive. pub type ExecutiveTrapResult<'a, T> = vm::TrapResult, CallCreateExecutive<'a>>; /// Trap error for executive. pub type ExecutiveTrapError<'a> = vm::TrapError, CallCreateExecutive<'a>>; enum CallCreateExecutiveKind { Transfer(ActionParams), CallBuiltin(ActionParams), ExecCall(ActionParams, Substate), ExecCreate(ActionParams, Substate), ResumeCall(OriginInfo, Box, Substate), ResumeCreate(OriginInfo, Box, Substate), } /// Executive for a raw call/create action. pub struct CallCreateExecutive<'a> { info: &'a EnvInfo, machine: &'a Machine, schedule: &'a Schedule, factory: &'a VmFactory, depth: usize, stack_depth: usize, static_flag: bool, is_create: bool, gas: U256, kind: CallCreateExecutiveKind, } impl<'a> CallCreateExecutive<'a> { /// Create new state with access list. pub fn new_substate(params: &ActionParams, schedule: &'a Schedule) -> Substate { if schedule.eip2929 { let mut substate = Substate::from_access_list(¶ms.access_list); substate.access_list.insert_address(params.address); substate.access_list.insert_address(params.sender); substate } else { Substate::default() } } /// Create a new call executive using raw data. pub fn new_call_raw( params: ActionParams, info: &'a EnvInfo, machine: &'a Machine, schedule: &'a Schedule, factory: &'a VmFactory, depth: usize, stack_depth: usize, parent_static_flag: bool, ) -> Self { trace!( "Executive::call(params={:?}) self.env_info={:?}, parent_static={}", params, info, parent_static_flag ); let gas = params.gas; let static_flag = parent_static_flag || params.call_type == CallType::StaticCall; // if destination is builtin, try to execute it let kind = if let Some(builtin) = machine.builtin(¶ms.code_address, info.number) { // Engines aren't supposed to return builtins until activation, but // prefer to fail rather than silently break consensus. if !builtin.is_active(info.number) { panic!( "Consensus failure: engine implementation prematurely enabled built-in at {}", params.code_address ); } CallCreateExecutiveKind::CallBuiltin(params) } else { if params.code.is_some() { let substate = Self::new_substate(¶ms, schedule); CallCreateExecutiveKind::ExecCall(params, substate) } else { CallCreateExecutiveKind::Transfer(params) } }; Self { info, machine, schedule, factory, depth, stack_depth, static_flag, kind, gas, is_create: false, } } /// Create a new create executive using raw data. pub fn new_create_raw( params: ActionParams, info: &'a EnvInfo, machine: &'a Machine, schedule: &'a Schedule, factory: &'a VmFactory, depth: usize, stack_depth: usize, static_flag: bool, ) -> Self { trace!( "Executive::create(params={:?}) self.env_info={:?}, static={}", params, info, static_flag ); let gas = params.gas; let substate = Self::new_substate(¶ms, schedule); let kind = CallCreateExecutiveKind::ExecCreate(params, substate); Self { info, machine, schedule, factory, depth, stack_depth, static_flag, kind, gas, is_create: true, } } /// If this executive contains an unconfirmed substate, returns a mutable reference to it. pub fn unconfirmed_substate(&mut self) -> Option<&mut Substate> { match self.kind { CallCreateExecutiveKind::ExecCall(_, ref mut unsub) => Some(unsub), CallCreateExecutiveKind::ExecCreate(_, ref mut unsub) => Some(unsub), CallCreateExecutiveKind::ResumeCreate(_, _, ref mut unsub) => Some(unsub), CallCreateExecutiveKind::ResumeCall(_, _, ref mut unsub) => Some(unsub), CallCreateExecutiveKind::Transfer(..) | CallCreateExecutiveKind::CallBuiltin(..) => { None } } } fn check_static_flag( params: &ActionParams, static_flag: bool, is_create: bool, ) -> vm::Result<()> { if is_create { if static_flag { return Err(vm::Error::MutableCallInStaticContext); } } else { if (static_flag && (params.call_type == CallType::StaticCall || params.call_type == CallType::Call)) && params.value.value() > U256::zero() { return Err(vm::Error::MutableCallInStaticContext); } } Ok(()) } fn check_eip684( params: &ActionParams, state: &State, ) -> vm::Result<()> { if state.exists_and_has_code_or_nonce(¶ms.address)? { return Err(vm::Error::OutOfGas); } Ok(()) } fn transfer_exec_balance( params: &ActionParams, schedule: &Schedule, state: &mut State, substate: &mut Substate, ) -> vm::Result<()> { if let ActionValue::Transfer(val) = params.value { state.transfer_balance( ¶ms.sender, ¶ms.address, &val, substate.to_cleanup_mode(&schedule), )?; } Ok(()) } fn transfer_exec_balance_and_init_contract( params: &ActionParams, schedule: &Schedule, state: &mut State, substate: &mut Substate, ) -> vm::Result<()> { let nonce_offset = if schedule.no_empty { 1 } else { 0 }.into(); let prev_bal = state.balance(¶ms.address)?; if let ActionValue::Transfer(val) = params.value { state.sub_balance( ¶ms.sender, &val, &mut substate.to_cleanup_mode(&schedule), )?; state.new_contract(¶ms.address, val.saturating_add(prev_bal), nonce_offset)?; } else { state.new_contract(¶ms.address, prev_bal, nonce_offset)?; } Ok(()) } fn enact_result( result: &vm::Result, state: &mut State, substate: &mut Substate, un_substate: Substate, ) { match *result { Err(vm::Error::OutOfGas) | Err(vm::Error::BadJumpDestination { .. }) | Err(vm::Error::BadInstruction { .. }) | Err(vm::Error::StackUnderflow { .. }) | Err(vm::Error::BuiltIn { .. }) | Err(vm::Error::Wasm { .. }) | Err(vm::Error::OutOfStack { .. }) | Err(vm::Error::MutableCallInStaticContext) | Err(vm::Error::OutOfBounds) | Err(vm::Error::Reverted) | Err(vm::Error::SubStackUnderflow { .. }) | Err(vm::Error::OutOfSubStack { .. }) | Err(vm::Error::InvalidSubEntry) | Ok(FinalizationResult { apply_state: false, .. }) => { if let Some(addr) = UNPRUNABLE_PRECOMPILE_ADDRESS { if un_substate.touched.contains(&addr) { substate.touched.insert(addr); } } state.revert_to_checkpoint(); un_substate.access_list.rollback(); } Ok(_) | Err(vm::Error::Internal(_)) => { state.discard_checkpoint(); substate.accrue(un_substate); } } } /// Creates `Externalities` from `Executive`. fn as_externalities<'any, B: 'any + StateBackend, T, V>( state: &'any mut State, info: &'any EnvInfo, machine: &'any Machine, schedule: &'any Schedule, depth: usize, stack_depth: usize, static_flag: bool, origin_info: &'any OriginInfo, substate: &'any mut Substate, output: OutputPolicy, tracer: &'any mut T, vm_tracer: &'any mut V, ) -> Externalities<'any, T, V, B> where T: Tracer, V: VMTracer, { Externalities::new( state, info, machine, schedule, depth, stack_depth, origin_info, substate, output, tracer, vm_tracer, static_flag, ) } /// Execute the executive. If a sub-call/create action is required, a resume trap error is returned. The caller is /// then expected to call `resume_call` or `resume_create` to continue the execution. /// /// Current-level tracing is expected to be handled by caller. pub fn exec( mut self, state: &mut State, substate: &mut Substate, tracer: &mut T, vm_tracer: &mut V, ) -> ExecutiveTrapResult<'a, FinalizationResult> { match self.kind { CallCreateExecutiveKind::Transfer(ref params) => { assert!(!self.is_create); let mut inner = || { Self::check_static_flag(params, self.static_flag, self.is_create)?; Self::transfer_exec_balance(params, self.schedule, state, substate)?; Ok(FinalizationResult { gas_left: params.gas, return_data: ReturnData::empty(), apply_state: true, }) }; Ok(inner()) } CallCreateExecutiveKind::CallBuiltin(ref params) => { assert!(!self.is_create); let mut inner = || { let builtin = self.machine.builtin(¶ms.code_address, self.info.number).expect("Builtin is_some is checked when creating this kind in new_call_raw; qed"); Self::check_static_flag(¶ms, self.static_flag, self.is_create)?; state.checkpoint(); Self::transfer_exec_balance(¶ms, self.schedule, state, substate)?; let default = []; let data = if let Some(ref d) = params.data { d as &[u8] } else { &default as &[u8] }; // NOTE(niklasad1): block number is used by `builtin alt_bn128 ops` to enable eip1108 let cost = builtin.cost(data, self.info.number); if cost <= params.gas { let mut builtin_out_buffer = Vec::new(); let result = { let mut builtin_output = BytesRef::Flexible(&mut builtin_out_buffer); builtin.execute(data, &mut builtin_output) }; if let Err(e) = result { state.revert_to_checkpoint(); Err(vm::Error::BuiltIn(e)) } else { state.discard_checkpoint(); let out_len = builtin_out_buffer.len(); Ok(FinalizationResult { gas_left: params.gas - cost, return_data: ReturnData::new(builtin_out_buffer, 0, out_len), apply_state: true, }) } } else { // We need balance > 0 in precompiles to be EIP161 compliant, see PR#11597. // Since RIPEMD160 was removed in mainnet block #2686351, this is activated only in // tests to check this specific irregular state transition. if let Some(unprunable_addr) = UNPRUNABLE_PRECOMPILE_ADDRESS { if unprunable_addr != params.code_address && state.balance(¶ms.code_address)?.is_zero() { substate.touched.remove(¶ms.code_address); } } // just drain the whole gas state.revert_to_checkpoint(); Err(vm::Error::OutOfGas) } }; Ok(inner()) } CallCreateExecutiveKind::ExecCall(params, mut unconfirmed_substate) => { assert!(!self.is_create); { let static_flag = self.static_flag; let is_create = self.is_create; let schedule = self.schedule; let mut pre_inner = || { Self::check_static_flag(¶ms, static_flag, is_create)?; state.checkpoint(); Self::transfer_exec_balance(¶ms, schedule, state, substate)?; Ok(()) }; match pre_inner() { Ok(()) => (), Err(err) => return Ok(Err(err)), } } let origin_info = OriginInfo::from(¶ms); let exec = self.factory.create(params, self.schedule, self.depth); let out = { let mut ext = Self::as_externalities( state, self.info, self.machine, self.schedule, self.depth, self.stack_depth, self.static_flag, &origin_info, &mut unconfirmed_substate, OutputPolicy::Return, tracer, vm_tracer, ); exec.exec(&mut ext).map(|val| val.finalize(ext)) }; let res = match out { Ok(val) => val, Err(TrapError::Call(subparams, resume)) => { self.kind = CallCreateExecutiveKind::ResumeCall( origin_info, resume, unconfirmed_substate, ); return Err(TrapError::Call(subparams, self)); } Err(TrapError::Create(subparams, address, resume)) => { self.kind = CallCreateExecutiveKind::ResumeCreate( origin_info, resume, unconfirmed_substate, ); return Err(TrapError::Create(subparams, address, self)); } }; Self::enact_result(&res, state, substate, unconfirmed_substate); Ok(res) } CallCreateExecutiveKind::ExecCreate(params, mut unconfirmed_substate) => { assert!(self.is_create); { let static_flag = self.static_flag; let is_create = self.is_create; let schedule = self.schedule; let mut pre_inner = || { Self::check_eip684(¶ms, state)?; Self::check_static_flag(¶ms, static_flag, is_create)?; state.checkpoint(); Self::transfer_exec_balance_and_init_contract( ¶ms, schedule, state, substate, )?; Ok(()) }; match pre_inner() { Ok(()) => (), Err(err) => return Ok(Err(err)), } } let origin_info = OriginInfo::from(¶ms); let exec = self.factory.create(params, self.schedule, self.depth); let out = { let mut ext = Self::as_externalities( state, self.info, self.machine, self.schedule, self.depth, self.stack_depth, self.static_flag, &origin_info, &mut unconfirmed_substate, OutputPolicy::InitContract, tracer, vm_tracer, ); exec.exec(&mut ext).map(|val| val.finalize(ext)) }; let res = match out { Ok(val) => val, Err(TrapError::Call(subparams, resume)) => { self.kind = CallCreateExecutiveKind::ResumeCall( origin_info, resume, unconfirmed_substate, ); return Err(TrapError::Call(subparams, self)); } Err(TrapError::Create(subparams, address, resume)) => { self.kind = CallCreateExecutiveKind::ResumeCreate( origin_info, resume, unconfirmed_substate, ); return Err(TrapError::Create(subparams, address, self)); } }; Self::enact_result(&res, state, substate, unconfirmed_substate); Ok(res) } CallCreateExecutiveKind::ResumeCall(..) | CallCreateExecutiveKind::ResumeCreate(..) => { panic!("This executive has already been executed once.") } } } /// Resume execution from a call trap previsouly trapped by `exec`. /// /// Current-level tracing is expected to be handled by caller. pub fn resume_call( mut self, result: vm::MessageCallResult, state: &mut State, substate: &mut Substate, tracer: &mut T, vm_tracer: &mut V, ) -> ExecutiveTrapResult<'a, FinalizationResult> { match self.kind { CallCreateExecutiveKind::ResumeCall(origin_info, resume, mut unconfirmed_substate) => { let out = { let exec = resume.resume_call(result); let mut ext = Self::as_externalities( state, self.info, self.machine, self.schedule, self.depth, self.stack_depth, self.static_flag, &origin_info, &mut unconfirmed_substate, if self.is_create { OutputPolicy::InitContract } else { OutputPolicy::Return }, tracer, vm_tracer, ); exec.exec(&mut ext).map(|val| val.finalize(ext)) }; let res = match out { Ok(val) => val, Err(TrapError::Call(subparams, resume)) => { self.kind = CallCreateExecutiveKind::ResumeCall( origin_info, resume, unconfirmed_substate, ); return Err(TrapError::Call(subparams, self)); } Err(TrapError::Create(subparams, address, resume)) => { self.kind = CallCreateExecutiveKind::ResumeCreate( origin_info, resume, unconfirmed_substate, ); return Err(TrapError::Create(subparams, address, self)); } }; Self::enact_result(&res, state, substate, unconfirmed_substate); Ok(res) } CallCreateExecutiveKind::ResumeCreate(..) => { panic!("Resumable as create, but called resume_call") } CallCreateExecutiveKind::Transfer(..) | CallCreateExecutiveKind::CallBuiltin(..) | CallCreateExecutiveKind::ExecCall(..) | CallCreateExecutiveKind::ExecCreate(..) => panic!("Not resumable"), } } /// Resume execution from a create trap previsouly trapped by `exec`. /// /// Current-level tracing is expected to be handled by caller. pub fn resume_create( mut self, result: vm::ContractCreateResult, state: &mut State, substate: &mut Substate, tracer: &mut T, vm_tracer: &mut V, ) -> ExecutiveTrapResult<'a, FinalizationResult> { match self.kind { CallCreateExecutiveKind::ResumeCreate( origin_info, resume, mut unconfirmed_substate, ) => { let out = { let exec = resume.resume_create(result); let mut ext = Self::as_externalities( state, self.info, self.machine, self.schedule, self.depth, self.stack_depth, self.static_flag, &origin_info, &mut unconfirmed_substate, if self.is_create { OutputPolicy::InitContract } else { OutputPolicy::Return }, tracer, vm_tracer, ); exec.exec(&mut ext).map(|val| val.finalize(ext)) }; let res = match out { Ok(val) => val, Err(TrapError::Call(subparams, resume)) => { self.kind = CallCreateExecutiveKind::ResumeCall( origin_info, resume, unconfirmed_substate, ); return Err(TrapError::Call(subparams, self)); } Err(TrapError::Create(subparams, address, resume)) => { self.kind = CallCreateExecutiveKind::ResumeCreate( origin_info, resume, unconfirmed_substate, ); return Err(TrapError::Create(subparams, address, self)); } }; Self::enact_result(&res, state, substate, unconfirmed_substate); Ok(res) } CallCreateExecutiveKind::ResumeCall(..) => { panic!("Resumable as call, but called resume_create") } CallCreateExecutiveKind::Transfer(..) | CallCreateExecutiveKind::CallBuiltin(..) | CallCreateExecutiveKind::ExecCall(..) | CallCreateExecutiveKind::ExecCreate(..) => panic!("Not resumable"), } } /// Execute and consume the current executive. This function handles resume traps and sub-level tracing. The caller is expected to handle current-level tracing. pub fn consume( self, state: &mut State, top_substate: &mut Substate, tracer: &mut T, vm_tracer: &mut V, ) -> vm::Result { let mut last_res = Some(( false, self.gas, self.exec(state, top_substate, tracer, vm_tracer), )); let mut callstack: Vec<(Option
, CallCreateExecutive<'a>)> = Vec::new(); loop { match last_res { None => { match callstack.pop() { Some((_, exec)) => { let second_last = callstack.last_mut(); let parent_substate = match second_last { Some((_, ref mut second_last)) => second_last.unconfirmed_substate().expect("Current stack value is created from second last item; second last item must be call or create; qed"), None => top_substate, }; last_res = Some((exec.is_create, exec.gas, exec.exec(state, parent_substate, tracer, vm_tracer))); }, None => panic!("When callstack only had one item and it was executed, this function would return; callstack never reaches zero item; qed"), } }, Some((is_create, gas, Ok(val))) => { let current = callstack.pop(); match current { Some((address, mut exec)) => { if is_create { let address = address.expect("If the last executed status was from a create executive, then the destination address was pushed to the callstack; address is_some if it is_create; qed"); match val { Ok(ref val) if val.apply_state => { tracer.done_trace_create( gas - val.gas_left, &val.return_data, address ); }, Ok(_) => { tracer.done_trace_failed(&vm::Error::Reverted); }, Err(ref err) => { tracer.done_trace_failed(err); }, } vm_tracer.done_subtrace(); let second_last = callstack.last_mut(); let parent_substate = match second_last { Some((_, ref mut second_last)) => second_last.unconfirmed_substate().expect("Current stack value is created from second last item; second last item must be call or create; qed"), None => top_substate, }; let contract_create_result = into_contract_create_result(val, &address, exec.unconfirmed_substate().expect("Executive is resumed from a create; it has an unconfirmed substate; qed")); last_res = Some((exec.is_create, exec.gas, exec.resume_create( contract_create_result, state, parent_substate, tracer, vm_tracer ))); } else { match val { Ok(ref val) if val.apply_state => { tracer.done_trace_call( gas - val.gas_left, &val.return_data, ); }, Ok(_) => { tracer.done_trace_failed(&vm::Error::Reverted); }, Err(ref err) => { tracer.done_trace_failed(err); }, } vm_tracer.done_subtrace(); let second_last = callstack.last_mut(); let parent_substate = match second_last { Some((_, ref mut second_last)) => second_last.unconfirmed_substate().expect("Current stack value is created from second last item; second last item must be call or create; qed"), None => top_substate, }; last_res = Some((exec.is_create, exec.gas, exec.resume_call( into_message_call_result(val), state, parent_substate, tracer, vm_tracer ))); } }, None => return val, } }, Some((_, _, Err(TrapError::Call(subparams, resume)))) => { tracer.prepare_trace_call(&subparams, resume.depth + 1, resume.machine.builtin(&subparams.address, resume.info.number).is_some()); vm_tracer.prepare_subtrace(subparams.code.as_ref().map_or_else(|| &[] as &[u8], |d| &*d as &[u8])); let sub_exec = CallCreateExecutive::new_call_raw( subparams, resume.info, resume.machine, resume.schedule, resume.factory, resume.depth + 1, resume.stack_depth, resume.static_flag, ); callstack.push((None, resume)); callstack.push((None, sub_exec)); last_res = None; }, Some((_, _, Err(TrapError::Create(subparams, address, resume)))) => { tracer.prepare_trace_create(&subparams); vm_tracer.prepare_subtrace(subparams.code.as_ref().map_or_else(|| &[] as &[u8], |d| &*d as &[u8])); let sub_exec = CallCreateExecutive::new_create_raw( subparams, resume.info, resume.machine, resume.schedule, resume.factory, resume.depth + 1, resume.stack_depth, resume.static_flag ); callstack.push((Some(address), resume)); callstack.push((None, sub_exec)); last_res = None; }, } } } } /// Transaction executor. pub struct Executive<'a, B: 'a> { state: &'a mut State, info: &'a EnvInfo, machine: &'a Machine, schedule: &'a Schedule, depth: usize, static_flag: bool, } impl<'a, B: 'a + StateBackend> Executive<'a, B> { /// Basic constructor. pub fn new( state: &'a mut State, info: &'a EnvInfo, machine: &'a Machine, schedule: &'a Schedule, ) -> Self { Executive { state: state, info: info, machine: machine, schedule: schedule, depth: 0, static_flag: false, } } /// Populates executive from parent properties. Increments executive depth. pub fn from_parent( state: &'a mut State, info: &'a EnvInfo, machine: &'a Machine, schedule: &'a Schedule, parent_depth: usize, static_flag: bool, ) -> Self { Executive { state: state, info: info, machine: machine, schedule: schedule, depth: parent_depth + 1, static_flag: static_flag, } } /// This function should be used to execute transaction. pub fn transact( &'a mut self, t: &SignedTransaction, options: TransactOptions, ) -> Result, ExecutionError> where T: Tracer, V: VMTracer, { self.transact_with_tracer( t, options.check_nonce, options.output_from_init_contract, options.tracer, options.vm_tracer, ) } /// Execute a transaction in a "virtual" context. /// This will ensure the caller has enough balance to execute the desired transaction. /// Used for extra-block executions for things like consensus contracts and RPCs pub fn transact_virtual( &'a mut self, t: &SignedTransaction, options: TransactOptions, ) -> Result, ExecutionError> where T: Tracer, V: VMTracer, { let sender = t.sender(); let balance = self.state.balance(&sender)?; let needed_balance = t .tx() .value .saturating_add(t.tx().gas.saturating_mul(t.tx().gas_price)); if balance < needed_balance { // give the sender a sufficient balance self.state .add_balance(&sender, &(needed_balance - balance), CleanupMode::NoEmpty)?; } self.transact(t, options) } /// Execute transaction/call with tracing enabled fn transact_with_tracer( &'a mut self, t: &SignedTransaction, check_nonce: bool, output_from_create: bool, mut tracer: T, mut vm_tracer: V, ) -> Result, ExecutionError> where T: Tracer, V: VMTracer, { let schedule = self.schedule; // check if particualar transaction type is enabled at this block number in schedule match t.as_unsigned() { TypedTransaction::AccessList(_) => { if !schedule.eip2930 { return Err(ExecutionError::TransactionMalformed( "OptionalAccessList EIP-2930 or EIP-2929 not enabled".into(), )); } } TypedTransaction::Legacy(_) => (), //legacy transactions are allways valid }; let sender = t.sender(); let nonce = self.state.nonce(&sender)?; let mut base_gas_required = U256::from(t.tx().gas_required(&schedule)); let mut access_list = AccessList::new(schedule.eip2929); if schedule.eip2929 { for (address, _) in self.machine.builtins() { access_list.insert_address(*address); } if schedule.eip2930 { // optional access list if let TypedTransaction::AccessList(al_tx) = t.as_unsigned() { for item in al_tx.access_list.iter() { access_list.insert_address(item.0); base_gas_required += vm::schedule::EIP2930_ACCESS_LIST_ADDRESS_COST.into(); for key in item.1.iter() { access_list.insert_storage_key(item.0, *key); base_gas_required += vm::schedule::EIP2930_ACCESS_LIST_STORAGE_KEY_COST.into(); } } } } } if t.tx().gas < base_gas_required { return Err(ExecutionError::NotEnoughBaseGas { required: base_gas_required, got: t.tx().gas, }); } if !t.is_unsigned() && check_nonce && schedule.kill_dust != CleanDustMode::Off && !self.state.exists(&sender)? { return Err(ExecutionError::SenderMustExist); } let init_gas = t.tx().gas - base_gas_required; // validate transaction nonce if check_nonce && t.tx().nonce != nonce { return Err(ExecutionError::InvalidNonce { expected: nonce, got: t.tx().nonce, }); } // validate if transaction fits into given block if self.info.gas_used + t.tx().gas > self.info.gas_limit { return Err(ExecutionError::BlockGasLimitReached { gas_limit: self.info.gas_limit, gas_used: self.info.gas_used, gas: t.tx().gas, }); } // TODO: we might need bigints here, or at least check overflows. let balance = self.state.balance(&sender)?; let gas_cost = t.tx().gas.full_mul(t.tx().gas_price); let total_cost = U512::from(t.tx().value) + gas_cost; // avoid unaffordable transactions let balance512 = U512::from(balance); if balance512 < total_cost { return Err(ExecutionError::NotEnoughCash { required: total_cost, got: balance512, }); } let mut substate = Substate::from_access_list(&access_list); // NOTE: there can be no invalid transactions from this point. if !schedule.keep_unsigned_nonce || !t.is_unsigned() { self.state.inc_nonce(&sender)?; } self.state.sub_balance( &sender, &U256::try_from(gas_cost).expect("Total cost (value + gas_cost) is lower than max allowed balance (U256); gas_cost has to fit U256; qed"), &mut substate.to_cleanup_mode(&schedule), )?; let (result, output) = match t.tx().action { Action::Create => { let (new_address, code_hash) = contract_address( self.machine.create_address_scheme(self.info.number), &sender, &nonce, &t.tx().data, ); let params = ActionParams { code_address: new_address.clone(), code_hash: code_hash, address: new_address, sender: sender.clone(), origin: sender.clone(), gas: init_gas, gas_price: t.tx().gas_price, value: ActionValue::Transfer(t.tx().value), code: Some(Arc::new(t.tx().data.clone())), data: None, call_type: CallType::None, params_type: vm::ParamsType::Embedded, access_list: access_list, }; let res = self.create(params, &mut substate, &mut tracer, &mut vm_tracer); let out = match &res { Ok(res) if output_from_create => res.return_data.to_vec(), _ => Vec::new(), }; (res, out) } Action::Call(ref address) => { let params = ActionParams { code_address: address.clone(), address: address.clone(), sender: sender.clone(), origin: sender.clone(), gas: init_gas, gas_price: t.tx().gas_price, value: ActionValue::Transfer(t.tx().value), code: self.state.code(address)?, code_hash: self.state.code_hash(address)?, data: Some(t.tx().data.clone()), call_type: CallType::Call, params_type: vm::ParamsType::Separate, access_list: access_list, }; let res = self.call(params, &mut substate, &mut tracer, &mut vm_tracer); let out = match &res { Ok(res) => res.return_data.to_vec(), _ => Vec::new(), }; (res, out) } }; // finalize here! Ok(self.finalize( t, substate, result, output, tracer.drain(), vm_tracer.drain(), )?) } /// Calls contract function with given contract params and stack depth. /// NOTE. It does not finalize the transaction (doesn't do refunds, nor suicides). /// Modifies the substate and the output. /// Returns either gas_left or `vm::Error`. pub fn call_with_stack_depth( &mut self, params: ActionParams, substate: &mut Substate, stack_depth: usize, tracer: &mut T, vm_tracer: &mut V, ) -> vm::Result where T: Tracer, V: VMTracer, { tracer.prepare_trace_call( ¶ms, self.depth, self.machine .builtin(¶ms.address, self.info.number) .is_some(), ); vm_tracer.prepare_subtrace( params .code .as_ref() .map_or_else(|| &[] as &[u8], |d| &*d as &[u8]), ); let gas = params.gas; let vm_factory = self.state.vm_factory(); let result = CallCreateExecutive::new_call_raw( params, self.info, self.machine, self.schedule, &vm_factory, self.depth, stack_depth, self.static_flag, ) .consume(self.state, substate, tracer, vm_tracer); match result { Ok(ref val) if val.apply_state => { tracer.done_trace_call(gas - val.gas_left, &val.return_data); } Ok(_) => { tracer.done_trace_failed(&vm::Error::Reverted); } Err(ref err) => { tracer.done_trace_failed(err); } } vm_tracer.done_subtrace(); result } /// Calls contract function with given contract params. pub fn call( &mut self, params: ActionParams, substate: &mut Substate, tracer: &mut T, vm_tracer: &mut V, ) -> vm::Result where T: Tracer, V: VMTracer, { self.call_with_stack_depth(params, substate, 0, tracer, vm_tracer) } /// Creates contract with given contract params and stack depth. /// NOTE. It does not finalize the transaction (doesn't do refunds, nor suicides). /// Modifies the substate. pub fn create_with_stack_depth( &mut self, params: ActionParams, substate: &mut Substate, stack_depth: usize, tracer: &mut T, vm_tracer: &mut V, ) -> vm::Result where T: Tracer, V: VMTracer, { tracer.prepare_trace_create(¶ms); vm_tracer.prepare_subtrace( params .code .as_ref() .map_or_else(|| &[] as &[u8], |d| &*d as &[u8]), ); let address = params.address; let gas = params.gas; let vm_factory = self.state.vm_factory(); let result = CallCreateExecutive::new_create_raw( params, self.info, self.machine, self.schedule, &vm_factory, self.depth, stack_depth, self.static_flag, ) .consume(self.state, substate, tracer, vm_tracer); match result { Ok(ref val) if val.apply_state => { tracer.done_trace_create(gas - val.gas_left, &val.return_data, address); } Ok(_) => { tracer.done_trace_failed(&vm::Error::Reverted); } Err(ref err) => { tracer.done_trace_failed(err); } } vm_tracer.done_subtrace(); result } /// Creates contract with given contract params. pub fn create( &mut self, params: ActionParams, substate: &mut Substate, tracer: &mut T, vm_tracer: &mut V, ) -> vm::Result where T: Tracer, V: VMTracer, { self.create_with_stack_depth(params, substate, 0, tracer, vm_tracer) } /// Finalizes the transaction (does refunds and suicides). fn finalize( &mut self, t: &SignedTransaction, mut substate: Substate, result: vm::Result, output: Bytes, trace: Vec, vm_trace: Option, ) -> Result, ExecutionError> { let schedule = self.schedule; // refunds from SSTORE nonzero -> zero assert!( substate.sstore_clears_refund >= 0, "On transaction level, sstore clears refund cannot go below zero." ); let sstore_refunds = U256::from(substate.sstore_clears_refund as u64); // refunds from contract suicides let suicide_refunds = U256::from(schedule.suicide_refund_gas) * U256::from(substate.suicides.len()); let refunds_bound = sstore_refunds + suicide_refunds; // real ammount to refund let gas_left_prerefund = match result { Ok(FinalizationResult { gas_left, .. }) => gas_left, _ => 0.into(), }; let refunded = cmp::min(refunds_bound, (t.tx().gas - gas_left_prerefund) >> 1); let gas_left = gas_left_prerefund + refunded; let gas_used = t.tx().gas.saturating_sub(gas_left); let (refund_value, overflow_1) = gas_left.overflowing_mul(t.tx().gas_price); let (fees_value, overflow_2) = gas_used.overflowing_mul(t.tx().gas_price); if overflow_1 || overflow_2 { return Err(ExecutionError::TransactionMalformed( "U256 Overflow".to_string(), )); } trace!("exec::finalize: t.gas={}, sstore_refunds={}, suicide_refunds={}, refunds_bound={}, gas_left_prerefund={}, refunded={}, gas_left={}, gas_used={}, refund_value={}, fees_value={}\n", t.tx().gas, sstore_refunds, suicide_refunds, refunds_bound, gas_left_prerefund, refunded, gas_left, gas_used, refund_value, fees_value); let sender = t.sender(); trace!( "exec::finalize: Refunding refund_value={}, sender={}\n", refund_value, sender ); // Below: NoEmpty is safe since the sender must already be non-null to have sent this transaction self.state .add_balance(&sender, &refund_value, CleanupMode::NoEmpty)?; trace!( "exec::finalize: Compensating author: fees_value={}, author={}\n", fees_value, &self.info.author ); self.state.add_balance( &self.info.author, &fees_value, substate.to_cleanup_mode(&schedule), )?; // perform suicides for address in &substate.suicides { self.state.kill_account(address); } // perform garbage-collection let min_balance = if schedule.kill_dust != CleanDustMode::Off { Some( U256::from(schedule.tx_gas) .overflowing_mul(t.tx().gas_price) .0, ) } else { None }; self.state.kill_garbage( &substate.touched, schedule.kill_empty, &min_balance, schedule.kill_dust == CleanDustMode::WithCodeAndStorage, )?; match result { Err(vm::Error::Internal(msg)) => Err(ExecutionError::Internal(msg)), Err(exception) => Ok(Executed { exception: Some(exception), gas: t.tx().gas, gas_used: t.tx().gas, refunded: U256::zero(), cumulative_gas_used: self.info.gas_used + t.tx().gas, logs: vec![], contracts_created: vec![], output: output, trace: trace, vm_trace: vm_trace, state_diff: None, }), Ok(r) => Ok(Executed { exception: if r.apply_state { None } else { Some(vm::Error::Reverted) }, gas: t.tx().gas, gas_used: gas_used, refunded: refunded, cumulative_gas_used: self.info.gas_used + gas_used, logs: substate.logs, contracts_created: substate.contracts_created, output: output, trace: trace, vm_trace: vm_trace, state_diff: None, }), } } } #[cfg(test)] #[allow(dead_code)] mod tests { use super::*; use crypto::publickey::{Generator, Random}; use error::ExecutionError; use ethereum_types::{Address, BigEndianHash, H160, H256, U256, U512}; use evm::{Factory, VMType}; use machine::EthereumMachine; use rustc_hex::FromHex; use state::{CleanupMode, Substate}; use std::{str::FromStr, sync::Arc}; use test_helpers::{get_temp_state, get_temp_state_with_factory}; use trace::{ trace, ExecutiveTracer, ExecutiveVMTracer, FlatTrace, MemoryDiff, NoopTracer, NoopVMTracer, StorageDiff, Tracer, VMExecutedOperation, VMOperation, VMTrace, VMTracer, }; use types::transaction::{Action, Transaction, TypedTransaction}; use vm::{ActionParams, ActionValue, CallType, CreateContractAddress, EnvInfo}; fn make_frontier_machine(max_depth: usize) -> EthereumMachine { let mut machine = ::ethereum::new_frontier_test_machine(); machine.set_schedule_creation_rules(Box::new(move |s, _| s.max_depth = max_depth)); machine } fn make_byzantium_machine(max_depth: usize) -> EthereumMachine { let mut machine = ::ethereum::new_byzantium_test_machine(); machine.set_schedule_creation_rules(Box::new(move |s, _| s.max_depth = max_depth)); machine } #[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( CreateContractAddress::FromSenderAndNonce, &address, &U256::from(88), &[] ) .0 ); } // TODO: replace params with transactions! evm_test! {test_sender_balance: test_sender_balance_int} fn test_sender_balance(factory: Factory) { let sender = Address::from_str("0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6").unwrap(); let address = contract_address( CreateContractAddress::FromSenderAndNonce, &sender, &U256::zero(), &[], ) .0; let mut params = ActionParams::default(); params.address = address.clone(); params.sender = sender.clone(); params.gas = U256::from(100_000); params.code = Some(Arc::new("3331600055".from_hex().unwrap())); params.value = ActionValue::Transfer(U256::from(0x7)); let mut state = get_temp_state_with_factory(factory); state .add_balance(&sender, &U256::from(0x100u64), CleanupMode::NoEmpty) .unwrap(); let info = EnvInfo::default(); let machine = make_frontier_machine(0); let schedule = machine.schedule(info.number); let mut substate = Substate::new(); let FinalizationResult { gas_left, .. } = { let mut ex = Executive::new(&mut state, &info, &machine, &schedule); ex.create(params, &mut substate, &mut NoopTracer, &mut NoopVMTracer) .unwrap() }; assert_eq!(gas_left, U256::from(79_975)); assert_eq!( state.storage_at(&address, &H256::default()).unwrap(), BigEndianHash::from_uint(&U256::from(0xf9u64)) ); assert_eq!(state.balance(&sender).unwrap(), U256::from(0xf9)); assert_eq!(state.balance(&address).unwrap(), U256::from(0x7)); assert_eq!(substate.contracts_created.len(), 0); // TODO: just test state root. } evm_test! {test_create_contract_out_of_depth: test_create_contract_out_of_depth_int} fn test_create_contract_out_of_depth(factory: Factory) { // 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( CreateContractAddress::FromSenderAndNonce, &sender, &U256::zero(), &[], ) .0; // TODO: add tests for 'callcreate' //let next_address = contract_address(&address, &U256::zero()); let mut params = ActionParams::default(); params.address = address.clone(); params.sender = sender.clone(); params.origin = sender.clone(); params.gas = U256::from(100_000); params.code = Some(Arc::new(code)); params.value = ActionValue::Transfer(U256::from(100)); let mut state = get_temp_state_with_factory(factory); state .add_balance(&sender, &U256::from(100), CleanupMode::NoEmpty) .unwrap(); let info = EnvInfo::default(); let machine = make_frontier_machine(0); let schedule = machine.schedule(info.number); let mut substate = Substate::new(); let FinalizationResult { gas_left, .. } = { let mut ex = Executive::new(&mut state, &info, &machine, &schedule); ex.create(params, &mut substate, &mut NoopTracer, &mut NoopVMTracer) .unwrap() }; assert_eq!(gas_left, U256::from(62_976)); // ended with max depth assert_eq!(substate.contracts_created.len(), 0); } #[test] fn test_call_to_precompiled_tracing() { // code: // // 60 00 - push 00 out size // 60 00 - push 00 out offset // 60 00 - push 00 in size // 60 00 - push 00 in offset // 60 01 - push 01 value // 60 03 - push 03 to // 61 ffff - push fff gas // f1 - CALL let code = "60006000600060006001600361fffff1".from_hex().unwrap(); let sender = Address::from_str("4444444444444444444444444444444444444444").unwrap(); let address = Address::from_str("5555555555555555555555555555555555555555").unwrap(); let mut params = ActionParams::default(); params.address = address.clone(); params.code_address = address.clone(); params.sender = sender.clone(); params.origin = sender.clone(); params.gas = U256::from(100_000); params.code = Some(Arc::new(code)); params.value = ActionValue::Transfer(U256::from(100)); params.call_type = CallType::Call; let mut state = get_temp_state(); state .add_balance(&sender, &U256::from(100), CleanupMode::NoEmpty) .unwrap(); let info = EnvInfo::default(); let machine = make_byzantium_machine(5); let schedule = machine.schedule(info.number); let mut substate = Substate::new(); let mut tracer = ExecutiveTracer::default(); let mut vm_tracer = ExecutiveVMTracer::toplevel(); let mut ex = Executive::new(&mut state, &info, &machine, &schedule); ex.call(params, &mut substate, &mut tracer, &mut vm_tracer) .unwrap(); assert_eq!( tracer.drain(), vec![ FlatTrace { action: trace::Action::Call(trace::Call { from: H160::from_str("4444444444444444444444444444444444444444").unwrap(), to: H160::from_str("5555555555555555555555555555555555555555").unwrap(), value: 100.into(), gas: 100_000.into(), input: vec![], call_type: CallType::Call }), result: trace::Res::Call(trace::CallResult { gas_used: 33021.into(), output: vec![] }), subtraces: 1, trace_address: Default::default() }, FlatTrace { action: trace::Action::Call(trace::Call { from: H160::from_str("5555555555555555555555555555555555555555").unwrap(), to: H160::from_str("0000000000000000000000000000000000000003").unwrap(), value: 1.into(), gas: 66560.into(), input: vec![], call_type: CallType::Call }), result: trace::Res::Call(trace::CallResult { gas_used: 600.into(), output: vec![ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 156, 17, 133, 165, 197, 233, 252, 84, 97, 40, 8, 151, 126, 232, 245, 72, 178, 37, 141, 49 ] }), subtraces: 0, trace_address: vec![0].into_iter().collect(), } ] ); } #[test] // Tracing is not suported in JIT fn test_call_to_create() { // code: // // 7c 601080600c6000396000f3006000355415600957005b60203560003555 - push 29 bytes? // 60 00 - push 0 // 52 // 60 1d - push 29 // 60 03 - push 3 // 60 17 - push 23 // 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( CreateContractAddress::FromSenderAndNonce, &sender, &U256::zero(), &[], ) .0; // TODO: add tests for 'callcreate' //let next_address = contract_address(&address, &U256::zero()); let mut params = ActionParams::default(); params.address = address.clone(); params.code_address = address.clone(); params.sender = sender.clone(); params.origin = sender.clone(); params.gas = U256::from(100_000); params.code = Some(Arc::new(code)); params.value = ActionValue::Transfer(U256::from(100)); params.call_type = CallType::Call; let mut state = get_temp_state(); state .add_balance(&sender, &U256::from(100), CleanupMode::NoEmpty) .unwrap(); let info = EnvInfo::default(); let machine = make_frontier_machine(5); let schedule = machine.schedule(info.number); let mut substate = Substate::new(); let mut tracer = ExecutiveTracer::default(); let mut vm_tracer = ExecutiveVMTracer::toplevel(); let FinalizationResult { gas_left, .. } = { let mut ex = Executive::new(&mut state, &info, &machine, &schedule); ex.call(params, &mut substate, &mut tracer, &mut vm_tracer) .unwrap() }; assert_eq!(gas_left, U256::from(44_752)); let expected_trace = vec![ FlatTrace { trace_address: Default::default(), subtraces: 1, action: trace::Action::Call(trace::Call { from: H160::from_str("cd1722f3947def4cf144679da39c4c32bdc35681").unwrap(), to: H160::from_str("b010143a42d5980c7e5ef0e4a4416dc098a4fed3").unwrap(), value: 100.into(), gas: 100000.into(), input: vec![], call_type: CallType::Call, }), result: trace::Res::Call(trace::CallResult { gas_used: U256::from(55_248), output: vec![], }), }, FlatTrace { trace_address: vec![0].into_iter().collect(), subtraces: 0, action: trace::Action::Create(trace::Create { from: H160::from_str("b010143a42d5980c7e5ef0e4a4416dc098a4fed3").unwrap(), value: 23.into(), gas: 67979.into(), init: vec![ 96, 16, 128, 96, 12, 96, 0, 57, 96, 0, 243, 0, 96, 0, 53, 84, 21, 96, 9, 87, 0, 91, 96, 32, 53, 96, 0, 53, 85, ], }), result: trace::Res::Create(trace::CreateResult { gas_used: U256::from(3224), address: Address::from_str("c6d80f262ae5e0f164e5fde365044d7ada2bfa34").unwrap(), code: vec![96, 0, 53, 84, 21, 96, 9, 87, 0, 91, 96, 32, 53, 96, 0, 53], }), }, ]; assert_eq!(tracer.drain(), expected_trace); let expected_vm_trace = VMTrace { parent_step: 0, code: vec![124, 96, 16, 128, 96, 12, 96, 0, 57, 96, 0, 243, 0, 96, 0, 53, 84, 21, 96, 9, 87, 0, 91, 96, 32, 53, 96, 0, 53, 85, 96, 0, 82, 96, 29, 96, 3, 96, 23, 240, 96, 0, 85], operations: vec![ VMOperation { pc: 0, instruction: 124, gas_cost: 3.into(), executed: Some(VMExecutedOperation { gas_used: 99997.into(), stack_push: vec_into![U256::from_dec_str("2589892687202724018173567190521546555304938078595079151649957320078677").unwrap()], mem_diff: None, store_diff: None }) }, VMOperation { pc: 30, instruction: 96, gas_cost: 3.into(), executed: Some(VMExecutedOperation { gas_used: 99994.into(), stack_push: vec_into![0], mem_diff: None, store_diff: None }) }, VMOperation { pc: 32, instruction: 82, gas_cost: 6.into(), executed: Some(VMExecutedOperation { gas_used: 99988.into(), stack_push: vec_into![], mem_diff: Some(MemoryDiff { offset: 0, data: vec![0, 0, 0, 96, 16, 128, 96, 12, 96, 0, 57, 96, 0, 243, 0, 96, 0, 53, 84, 21, 96, 9, 87, 0, 91, 96, 32, 53, 96, 0, 53, 85] }), store_diff: None }) }, VMOperation { pc: 33, instruction: 96, gas_cost: 3.into(), executed: Some(VMExecutedOperation { gas_used: 99985.into(), stack_push: vec_into![29], mem_diff: None, store_diff: None }) }, VMOperation { pc: 35, instruction: 96, gas_cost: 3.into(), executed: Some(VMExecutedOperation { gas_used: 99982.into(), stack_push: vec_into![3], mem_diff: None, store_diff: None }) }, VMOperation { pc: 37, instruction: 96, gas_cost: 3.into(), executed: Some(VMExecutedOperation { gas_used: 99979.into(), stack_push: vec_into![23], mem_diff: None, store_diff: None }) }, VMOperation { pc: 39, instruction: 240, gas_cost: 99979.into(), executed: Some(VMExecutedOperation { gas_used: 64755.into(), stack_push: vec_into![U256::from_dec_str("1135198453258042933984631383966629874710669425204").unwrap()], mem_diff: None, store_diff: None }) }, VMOperation { pc: 40, instruction: 96, gas_cost: 3.into(), executed: Some(VMExecutedOperation { gas_used: 64752.into(), stack_push: vec_into![0], mem_diff: None, store_diff: None }) }, VMOperation { pc: 42, instruction: 85, gas_cost: 20000.into(), executed: Some(VMExecutedOperation { gas_used: 44752.into(), stack_push: vec_into![], mem_diff: None, store_diff: Some(StorageDiff { location: 0.into(), value: U256::from_dec_str("1135198453258042933984631383966629874710669425204").unwrap() }) }) } ], subs: vec![ VMTrace { parent_step: 6, code: vec![96, 16, 128, 96, 12, 96, 0, 57, 96, 0, 243, 0, 96, 0, 53, 84, 21, 96, 9, 87, 0, 91, 96, 32, 53, 96, 0, 53, 85], operations: vec![ VMOperation { pc: 0, instruction: 96, gas_cost: 3.into(), executed: Some(VMExecutedOperation { gas_used: 67976.into(), stack_push: vec_into![16], mem_diff: None, store_diff: None }) }, VMOperation { pc: 2, instruction: 128, gas_cost: 3.into(), executed: Some(VMExecutedOperation { gas_used: 67973.into(), stack_push: vec_into![16, 16], mem_diff: None, store_diff: None }) }, VMOperation { pc: 3, instruction: 96, gas_cost: 3.into(), executed: Some(VMExecutedOperation { gas_used: 67970.into(), stack_push: vec_into![12], mem_diff: None, store_diff: None }) }, VMOperation { pc: 5, instruction: 96, gas_cost: 3.into(), executed: Some(VMExecutedOperation { gas_used: 67967.into(), stack_push: vec_into![0], mem_diff: None, store_diff: None }) }, VMOperation { pc: 7, instruction: 57, gas_cost: 9.into(), executed: Some(VMExecutedOperation { gas_used: 67958.into(), stack_push: vec_into![], mem_diff: Some(MemoryDiff { offset: 0, data: vec![96, 0, 53, 84, 21, 96, 9, 87, 0, 91, 96, 32, 53, 96, 0, 53] }), store_diff: None }) }, VMOperation { pc: 8, instruction: 96, gas_cost: 3.into(), executed: Some(VMExecutedOperation { gas_used: 67955.into(), stack_push: vec_into![0], mem_diff: None, store_diff: None }) }, VMOperation { pc: 10, instruction: 243, gas_cost: 0.into(), executed: Some(VMExecutedOperation { gas_used: 67955.into(), stack_push: vec_into![], mem_diff: None, store_diff: None }) } ], subs: vec![] } ] }; assert_eq!(vm_tracer.drain().unwrap(), expected_vm_trace); } #[test] fn test_trace_reverted_create() { // code: // // 65 60016000fd - push 5 bytes // 60 00 - push 0 // 52 mstore // 60 05 - push 5 // 60 1b - push 27 // 60 17 - push 23 // f0 - create // 60 00 - push 0 // 55 sstore // // other code: // // 60 01 // 60 00 // fd - revert let code = "6460016000fd6000526005601b6017f0600055".from_hex().unwrap(); let sender = Address::from_str("cd1722f3947def4cf144679da39c4c32bdc35681").unwrap(); let address = contract_address( CreateContractAddress::FromSenderAndNonce, &sender, &U256::zero(), &[], ) .0; let mut params = ActionParams::default(); params.address = address.clone(); params.code_address = address.clone(); params.sender = sender.clone(); params.origin = sender.clone(); params.gas = U256::from(100_000); params.code = Some(Arc::new(code)); params.value = ActionValue::Transfer(U256::from(100)); params.call_type = CallType::Call; let mut state = get_temp_state(); state .add_balance(&sender, &U256::from(100), CleanupMode::NoEmpty) .unwrap(); let info = EnvInfo::default(); let machine = ::ethereum::new_byzantium_test_machine(); let schedule = machine.schedule(info.number); let mut substate = Substate::new(); let mut tracer = ExecutiveTracer::default(); let mut vm_tracer = ExecutiveVMTracer::toplevel(); let FinalizationResult { gas_left, .. } = { let mut ex = Executive::new(&mut state, &info, &machine, &schedule); ex.call(params, &mut substate, &mut tracer, &mut vm_tracer) .unwrap() }; assert_eq!(gas_left, U256::from(62967)); let expected_trace = vec![ FlatTrace { trace_address: Default::default(), subtraces: 1, action: trace::Action::Call(trace::Call { from: H160::from_str("cd1722f3947def4cf144679da39c4c32bdc35681").unwrap(), to: H160::from_str("b010143a42d5980c7e5ef0e4a4416dc098a4fed3").unwrap(), value: 100.into(), gas: 100_000.into(), input: vec![], call_type: CallType::Call, }), result: trace::Res::Call(trace::CallResult { gas_used: U256::from(37_033), output: vec![], }), }, FlatTrace { trace_address: vec![0].into_iter().collect(), subtraces: 0, action: trace::Action::Create(trace::Create { from: H160::from_str("b010143a42d5980c7e5ef0e4a4416dc098a4fed3").unwrap(), value: 23.into(), gas: 66_917.into(), init: vec![0x60, 0x01, 0x60, 0x00, 0xfd], }), result: trace::Res::FailedCreate(vm::Error::Reverted.into()), }, ]; assert_eq!(tracer.drain(), expected_trace); } #[test] fn test_create_contract() { // Tracing is not supported in JIT // 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 = "601080600c6000396000f3006000355415600957005b60203560003555" .from_hex() .unwrap(); let sender = Address::from_str("cd1722f3947def4cf144679da39c4c32bdc35681").unwrap(); let address = contract_address( CreateContractAddress::FromSenderAndNonce, &sender, &U256::zero(), &[], ) .0; // TODO: add tests for 'callcreate' //let next_address = contract_address(&address, &U256::zero()); let mut params = ActionParams::default(); params.address = address.clone(); params.sender = sender.clone(); params.origin = sender.clone(); params.gas = U256::from(100_000); params.code = Some(Arc::new(code)); params.value = ActionValue::Transfer(100.into()); let mut state = get_temp_state(); state .add_balance(&sender, &U256::from(100), CleanupMode::NoEmpty) .unwrap(); let info = EnvInfo::default(); let machine = make_frontier_machine(5); let schedule = machine.schedule(info.number); let mut substate = Substate::new(); let mut tracer = ExecutiveTracer::default(); let mut vm_tracer = ExecutiveVMTracer::toplevel(); let FinalizationResult { gas_left, .. } = { let mut ex = Executive::new(&mut state, &info, &machine, &schedule); ex.create(params.clone(), &mut substate, &mut tracer, &mut vm_tracer) .unwrap() }; assert_eq!(gas_left, U256::from(96_776)); let expected_trace = vec![FlatTrace { trace_address: Default::default(), subtraces: 0, action: trace::Action::Create(trace::Create { from: params.sender, value: 100.into(), gas: params.gas, init: vec![ 96, 16, 128, 96, 12, 96, 0, 57, 96, 0, 243, 0, 96, 0, 53, 84, 21, 96, 9, 87, 0, 91, 96, 32, 53, 96, 0, 53, 85, ], }), result: trace::Res::Create(trace::CreateResult { gas_used: U256::from(3224), address: params.address, code: vec![96, 0, 53, 84, 21, 96, 9, 87, 0, 91, 96, 32, 53, 96, 0, 53], }), }]; assert_eq!(tracer.drain(), expected_trace); let expected_vm_trace = VMTrace { parent_step: 0, code: vec![ 96, 16, 128, 96, 12, 96, 0, 57, 96, 0, 243, 0, 96, 0, 53, 84, 21, 96, 9, 87, 0, 91, 96, 32, 53, 96, 0, 53, 85, ], operations: vec![ VMOperation { pc: 0, instruction: 96, gas_cost: 3.into(), executed: Some(VMExecutedOperation { gas_used: 99997.into(), stack_push: vec_into![16], mem_diff: None, store_diff: None, }), }, VMOperation { pc: 2, instruction: 128, gas_cost: 3.into(), executed: Some(VMExecutedOperation { gas_used: 99994.into(), stack_push: vec_into![16, 16], mem_diff: None, store_diff: None, }), }, VMOperation { pc: 3, instruction: 96, gas_cost: 3.into(), executed: Some(VMExecutedOperation { gas_used: 99991.into(), stack_push: vec_into![12], mem_diff: None, store_diff: None, }), }, VMOperation { pc: 5, instruction: 96, gas_cost: 3.into(), executed: Some(VMExecutedOperation { gas_used: 99988.into(), stack_push: vec_into![0], mem_diff: None, store_diff: None, }), }, VMOperation { pc: 7, instruction: 57, gas_cost: 9.into(), executed: Some(VMExecutedOperation { gas_used: 99979.into(), stack_push: vec_into![], mem_diff: Some(MemoryDiff { offset: 0, data: vec![96, 0, 53, 84, 21, 96, 9, 87, 0, 91, 96, 32, 53, 96, 0, 53], }), store_diff: None, }), }, VMOperation { pc: 8, instruction: 96, gas_cost: 3.into(), executed: Some(VMExecutedOperation { gas_used: 99976.into(), stack_push: vec_into![0], mem_diff: None, store_diff: None, }), }, VMOperation { pc: 10, instruction: 243, gas_cost: 0.into(), executed: Some(VMExecutedOperation { gas_used: 99976.into(), stack_push: vec_into![], mem_diff: None, store_diff: None, }), }, ], subs: vec![], }; assert_eq!(vm_tracer.drain().unwrap(), expected_vm_trace); } evm_test! {test_create_contract_value_too_high: test_create_contract_value_too_high_int} fn test_create_contract_value_too_high(factory: Factory) { // 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( CreateContractAddress::FromSenderAndNonce, &sender, &U256::zero(), &[], ) .0; // TODO: add tests for 'callcreate' //let next_address = contract_address(&address, &U256::zero()); let mut params = ActionParams::default(); params.address = address.clone(); params.sender = sender.clone(); params.origin = sender.clone(); params.gas = U256::from(100_000); params.code = Some(Arc::new(code)); params.value = ActionValue::Transfer(U256::from(100)); let mut state = get_temp_state_with_factory(factory); state .add_balance(&sender, &U256::from(100), CleanupMode::NoEmpty) .unwrap(); let info = EnvInfo::default(); let machine = make_frontier_machine(0); let schedule = machine.schedule(info.number); let mut substate = Substate::new(); let FinalizationResult { gas_left, .. } = { let mut ex = Executive::new(&mut state, &info, &machine, &schedule); ex.create(params, &mut substate, &mut NoopTracer, &mut NoopVMTracer) .unwrap() }; assert_eq!(gas_left, U256::from(62_976)); assert_eq!(substate.contracts_created.len(), 0); } evm_test! {test_create_contract_without_max_depth: test_create_contract_without_max_depth_int} fn test_create_contract_without_max_depth(factory: Factory) { // 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 = "7c601080600c6000396000f3006000355415600957005b60203560003555600052601d60036017f0" .from_hex() .unwrap(); let sender = Address::from_str("cd1722f3947def4cf144679da39c4c32bdc35681").unwrap(); let address = contract_address( CreateContractAddress::FromSenderAndNonce, &sender, &U256::zero(), &[], ) .0; let next_address = contract_address( CreateContractAddress::FromSenderAndNonce, &address, &U256::zero(), &[], ) .0; let mut params = ActionParams::default(); params.address = address.clone(); params.sender = sender.clone(); params.origin = sender.clone(); params.gas = U256::from(100_000); params.code = Some(Arc::new(code)); params.value = ActionValue::Transfer(U256::from(100)); let mut state = get_temp_state_with_factory(factory); state .add_balance(&sender, &U256::from(100), CleanupMode::NoEmpty) .unwrap(); let info = EnvInfo::default(); let machine = make_frontier_machine(1024); let schedule = machine.schedule(info.number); let mut substate = Substate::new(); { let mut ex = Executive::new(&mut state, &info, &machine, &schedule); ex.create(params, &mut substate, &mut NoopTracer, &mut NoopVMTracer) .unwrap(); } assert_eq!(substate.contracts_created.len(), 1); assert_eq!(substate.contracts_created[0], next_address); } // test is incorrect, mk // TODO: fix (preferred) or remove evm_test_ignore! {test_aba_calls: test_aba_calls_int} fn test_aba_calls(factory: Factory) { // 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::default(); params.address = address_a.clone(); params.sender = sender.clone(); params.gas = U256::from(100_000); params.code = Some(Arc::new(code_a.clone())); params.value = ActionValue::Transfer(U256::from(100_000)); let mut state = get_temp_state_with_factory(factory); state.init_code(&address_a, code_a.clone()).unwrap(); state.init_code(&address_b, code_b.clone()).unwrap(); state .add_balance(&sender, &U256::from(100_000), CleanupMode::NoEmpty) .unwrap(); let info = EnvInfo::default(); let machine = make_frontier_machine(0); let schedule = machine.schedule(info.number); let mut substate = Substate::new(); let FinalizationResult { gas_left, .. } = { let mut ex = Executive::new(&mut state, &info, &machine, &schedule); ex.call(params, &mut substate, &mut NoopTracer, &mut NoopVMTracer) .unwrap() }; assert_eq!(gas_left, U256::from(73_237)); assert_eq!( state .storage_at(&address_a, &BigEndianHash::from_uint(&U256::from(0x23))) .unwrap(), BigEndianHash::from_uint(&U256::from(1)) ); } // test is incorrect, mk // TODO: fix (preferred) or remove evm_test_ignore! {test_recursive_bomb1: test_recursive_bomb1_int} fn test_recursive_bomb1(factory: Factory) { // 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( CreateContractAddress::FromSenderAndNonce, &sender, &U256::zero(), &[], ) .0; let mut params = ActionParams::default(); params.address = address.clone(); params.gas = U256::from(100_000); params.code = Some(Arc::new(code.clone())); let mut state = get_temp_state_with_factory(factory); state.init_code(&address, code).unwrap(); let info = EnvInfo::default(); let machine = make_frontier_machine(0); let schedule = machine.schedule(info.number); let mut substate = Substate::new(); let FinalizationResult { gas_left, .. } = { let mut ex = Executive::new(&mut state, &info, &machine, &schedule); ex.call(params, &mut substate, &mut NoopTracer, &mut NoopVMTracer) .unwrap() }; assert_eq!(gas_left, U256::from(59_870)); assert_eq!( state .storage_at(&address, &BigEndianHash::from_uint(&U256::zero())) .unwrap(), BigEndianHash::from_uint(&U256::from(1)) ); assert_eq!( state .storage_at(&address, &BigEndianHash::from_uint(&U256::one())) .unwrap(), BigEndianHash::from_uint(&U256::from(1)) ); } // test is incorrect, mk // TODO: fix (preferred) or remove evm_test_ignore! {test_transact_simple: test_transact_simple_int} fn test_transact_simple(factory: Factory) { let keypair = Random.generate(); let t = TypedTransaction::Legacy(Transaction { action: Action::Create, value: U256::from(17), data: "3331600055".from_hex().unwrap(), gas: U256::from(100_000), gas_price: U256::zero(), nonce: U256::zero(), }) .sign(keypair.secret(), None); let sender = t.sender(); let contract = contract_address( CreateContractAddress::FromSenderAndNonce, &sender, &U256::zero(), &[], ) .0; let mut state = get_temp_state_with_factory(factory); state .add_balance(&sender, &U256::from(18), CleanupMode::NoEmpty) .unwrap(); let mut info = EnvInfo::default(); info.gas_limit = U256::from(100_000); let machine = make_frontier_machine(0); let schedule = machine.schedule(info.number); let executed = { let mut ex = Executive::new(&mut state, &info, &machine, &schedule); let opts = TransactOptions::with_no_tracing(); ex.transact(&t, opts).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.contracts_created.len(), 0); assert_eq!(state.balance(&sender).unwrap(), U256::from(1)); assert_eq!(state.balance(&contract).unwrap(), U256::from(17)); assert_eq!(state.nonce(&sender).unwrap(), U256::from(1)); assert_eq!( state.storage_at(&contract, &H256::zero()).unwrap(), BigEndianHash::from_uint(&U256::from(1)) ); } evm_test! {test_transact_invalid_nonce: test_transact_invalid_nonce_int} fn test_transact_invalid_nonce(factory: Factory) { let keypair = Random.generate(); let t = TypedTransaction::Legacy(Transaction { action: Action::Create, value: U256::from(17), data: "3331600055".from_hex().unwrap(), gas: U256::from(100_000), gas_price: U256::zero(), nonce: U256::one(), }) .sign(keypair.secret(), None); let sender = t.sender(); let mut state = get_temp_state_with_factory(factory); state .add_balance(&sender, &U256::from(17), CleanupMode::NoEmpty) .unwrap(); let mut info = EnvInfo::default(); info.gas_limit = U256::from(100_000); let machine = make_frontier_machine(0); let schedule = machine.schedule(info.number); let res = { let mut ex = Executive::new(&mut state, &info, &machine, &schedule); let opts = TransactOptions::with_no_tracing(); ex.transact(&t, opts) }; match res { Err(ExecutionError::InvalidNonce { expected, got }) if expected == U256::zero() && got == U256::one() => { () } _ => assert!(false, "Expected invalid nonce error."), } } evm_test! {test_transact_gas_limit_reached: test_transact_gas_limit_reached_int} fn test_transact_gas_limit_reached(factory: Factory) { let keypair = Random.generate(); let t = TypedTransaction::Legacy(Transaction { action: Action::Create, value: U256::from(17), data: "3331600055".from_hex().unwrap(), gas: U256::from(80_001), gas_price: U256::zero(), nonce: U256::zero(), }) .sign(keypair.secret(), None); let sender = t.sender(); let mut state = get_temp_state_with_factory(factory); state .add_balance(&sender, &U256::from(17), CleanupMode::NoEmpty) .unwrap(); let mut info = EnvInfo::default(); info.gas_used = U256::from(20_000); info.gas_limit = U256::from(100_000); let machine = make_frontier_machine(0); let schedule = machine.schedule(info.number); let res = { let mut ex = Executive::new(&mut state, &info, &machine, &schedule); let opts = TransactOptions::with_no_tracing(); ex.transact(&t, opts) }; match res { Err(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."), } } evm_test! {test_not_enough_cash: test_not_enough_cash_int} fn test_not_enough_cash(factory: Factory) { let keypair = Random.generate(); let t = TypedTransaction::Legacy(Transaction { action: Action::Create, value: U256::from(18), data: "3331600055".from_hex().unwrap(), gas: U256::from(100_000), gas_price: U256::one(), nonce: U256::zero(), }) .sign(keypair.secret(), None); let sender = t.sender(); let mut state = get_temp_state_with_factory(factory); state .add_balance(&sender, &U256::from(100_017), CleanupMode::NoEmpty) .unwrap(); let mut info = EnvInfo::default(); info.gas_limit = U256::from(100_000); let machine = make_frontier_machine(0); let schedule = machine.schedule(info.number); let res = { let mut ex = Executive::new(&mut state, &info, &machine, &schedule); let opts = TransactOptions::with_no_tracing(); ex.transact(&t, opts) }; match res { Err(ExecutionError::NotEnoughCash { required, got }) if required == U512::from(100_018) && got == U512::from(100_017) => { () } _ => assert!(false, "Expected not enough cash error. {:?}", res), } } evm_test! {test_keccak: test_keccak_int} fn test_keccak(factory: Factory) { let code = "6064640fffffffff20600055".from_hex().unwrap(); let sender = Address::from_str("0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6").unwrap(); let address = contract_address( CreateContractAddress::FromSenderAndNonce, &sender, &U256::zero(), &[], ) .0; // TODO: add tests for 'callcreate' //let next_address = contract_address(&address, &U256::zero()); let mut params = ActionParams::default(); params.address = address.clone(); params.sender = sender.clone(); params.origin = sender.clone(); params.gas = U256::from(0x0186a0); params.code = Some(Arc::new(code)); params.value = ActionValue::Transfer(U256::from_str("0de0b6b3a7640000").unwrap()); let mut state = get_temp_state_with_factory(factory); state .add_balance( &sender, &U256::from_str("152d02c7e14af6800000").unwrap(), CleanupMode::NoEmpty, ) .unwrap(); let info = EnvInfo::default(); let machine = make_frontier_machine(0); let schedule = machine.schedule(info.number); let mut substate = Substate::new(); let result = { let mut ex = Executive::new(&mut state, &info, &machine, &schedule); ex.create(params, &mut substate, &mut NoopTracer, &mut NoopVMTracer) }; match result { Err(_) => {} _ => panic!("Expected OutOfGas"), } } evm_test! {test_revert: test_revert_int} fn test_revert(factory: Factory) { let contract_address = Address::from_str("cd1722f3947def4cf144679da39c4c32bdc35681").unwrap(); let sender = Address::from_str("0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6").unwrap(); // EIP-140 test case let code = "6c726576657274656420646174616000557f726576657274206d657373616765000000000000000000000000000000000000600052600e6000fd".from_hex().unwrap(); let returns = "726576657274206d657373616765".from_hex().unwrap(); let mut state = get_temp_state_with_factory(factory.clone()); state .add_balance( &sender, &U256::from_str("152d02c7e14af68000000").unwrap(), CleanupMode::NoEmpty, ) .unwrap(); state.commit().unwrap(); let mut params = ActionParams::default(); params.address = contract_address.clone(); params.sender = sender.clone(); params.origin = sender.clone(); params.gas = U256::from(20025); params.code = Some(Arc::new(code)); params.value = ActionValue::Transfer(U256::zero()); let info = EnvInfo::default(); let machine = ::ethereum::new_byzantium_test_machine(); let schedule = machine.schedule(info.number); let mut substate = Substate::new(); let mut output = [0u8; 14]; let FinalizationResult { gas_left: result, return_data, .. } = { let mut ex = Executive::new(&mut state, &info, &machine, &schedule); ex.call(params, &mut substate, &mut NoopTracer, &mut NoopVMTracer) .unwrap() }; (&mut output).copy_from_slice(&return_data[..(cmp::min(14, return_data.len()))]); assert_eq!(result, U256::from(1)); assert_eq!(output[..], returns[..]); assert_eq!( state .storage_at(&contract_address, &BigEndianHash::from_uint(&U256::zero())) .unwrap(), BigEndianHash::from_uint(&U256::from(0)) ); } evm_test! {test_eip1283: test_eip1283_int} fn test_eip1283(factory: Factory) { let x1 = Address::from_low_u64_be(0x1000); let x2 = Address::from_low_u64_be(0x1001); let y1 = Address::from_low_u64_be(0x2001); let y2 = Address::from_low_u64_be(0x2002); let operating_address = Address::from_low_u64_be(0); let k = H256::default(); let mut state = get_temp_state_with_factory(factory.clone()); state .new_contract(&x1, U256::zero(), U256::from(1)) .unwrap(); state .init_code(&x1, "600160005560006000556001600055".from_hex().unwrap()) .unwrap(); state .new_contract(&x2, U256::zero(), U256::from(1)) .unwrap(); state .init_code(&x2, "600060005560016000556000600055".from_hex().unwrap()) .unwrap(); state .new_contract(&y1, U256::zero(), U256::from(1)) .unwrap(); state .init_code(&y1, "600060006000600061100062fffffff4".from_hex().unwrap()) .unwrap(); state .new_contract(&y2, U256::zero(), U256::from(1)) .unwrap(); state .init_code(&y2, "600060006000600061100162fffffff4".from_hex().unwrap()) .unwrap(); let info = EnvInfo::default(); let machine = ::ethereum::new_constantinople_test_machine(); let schedule = machine.schedule(info.number); assert_eq!( state.storage_at(&operating_address, &k).unwrap(), BigEndianHash::from_uint(&U256::from(0)) ); // Test a call via top-level -> y1 -> x1 let (FinalizationResult { gas_left, .. }, refund, gas) = { let gas = U256::from(0xffffffffffu64); let mut params = ActionParams::default(); params.code = Some(Arc::new( "6001600055600060006000600061200163fffffffff4" .from_hex() .unwrap(), )); params.gas = gas; let mut substate = Substate::new(); let mut ex = Executive::new(&mut state, &info, &machine, &schedule); let res = ex .call(params, &mut substate, &mut NoopTracer, &mut NoopVMTracer) .unwrap(); (res, substate.sstore_clears_refund, gas) }; let gas_used = gas - gas_left; // sstore: 0 -> (1) -> () -> (1 -> 0 -> 1) assert_eq!(gas_used, U256::from(41860)); assert_eq!(refund, 19800); assert_eq!( state.storage_at(&operating_address, &k).unwrap(), BigEndianHash::from_uint(&U256::from(1)) ); // Test a call via top-level -> y2 -> x2 let (FinalizationResult { gas_left, .. }, refund, gas) = { let gas = U256::from(0xffffffffffu64); let mut params = ActionParams::default(); params.code = Some(Arc::new( "6001600055600060006000600061200263fffffffff4" .from_hex() .unwrap(), )); params.gas = gas; let mut substate = Substate::new(); let mut ex = Executive::new(&mut state, &info, &machine, &schedule); let res = ex .call(params, &mut substate, &mut NoopTracer, &mut NoopVMTracer) .unwrap(); (res, substate.sstore_clears_refund, gas) }; let gas_used = gas - gas_left; // sstore: 1 -> (1) -> () -> (0 -> 1 -> 0) assert_eq!(gas_used, U256::from(11860)); assert_eq!(refund, 19800); } fn wasm_sample_code() -> Arc> { Arc::new( "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" .from_hex() .unwrap() ) } #[test] fn wasm_activated_test() { let contract_address = Address::from_str("cd1722f3947def4cf144679da39c4c32bdc35681").unwrap(); let sender = Address::from_str("0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6").unwrap(); let mut state = get_temp_state(); state .add_balance(&sender, &U256::from(10000000000u64), CleanupMode::NoEmpty) .unwrap(); state.commit().unwrap(); let mut params = ActionParams::default(); params.origin = sender.clone(); params.sender = sender.clone(); params.address = contract_address.clone(); params.gas = U256::from(20025); params.code = Some(wasm_sample_code()); let mut info = EnvInfo::default(); // 200 (wasmDisableTransition) > 100 > 10 (wasmActivationTransition) info.number = 100; // Network with wasm activated at block 10 let machine = ::ethereum::new_kovan_wasm_test_machine(); let mut output = [0u8; 20]; let FinalizationResult { gas_left: result, return_data, .. } = { let schedule = machine.schedule(info.number); let mut ex = Executive::new(&mut state, &info, &machine, &schedule); ex.call( params.clone(), &mut Substate::new(), &mut NoopTracer, &mut NoopVMTracer, ) .unwrap() }; (&mut output).copy_from_slice(&return_data[..(cmp::min(20, return_data.len()))]); assert_eq!(result, U256::from(18433)); // Transaction successfully returned sender assert_eq!(output[..], sender[..]); // 1 < 10 (wasmActivationTransition) info.number = 1; let mut output = [0u8; 20]; let FinalizationResult { gas_left: result, return_data, .. } = { let schedule = machine.schedule(info.number); let mut ex = Executive::new(&mut state, &info, &machine, &schedule); ex.call( params.clone(), &mut Substate::new(), &mut NoopTracer, &mut NoopVMTracer, ) .unwrap() }; (&mut output[..(cmp::min(20, return_data.len()))]) .copy_from_slice(&return_data[..(cmp::min(20, return_data.len()))]); assert_eq!(result, U256::from(20025)); // Since transaction errored due to wasm was not activated, result is just empty assert_eq!(output[..], [0u8; 20][..]); // 200 == wasmDisableTransition info.number = 200; let mut output = [0u8; 20]; let FinalizationResult { gas_left: result, return_data, .. } = { let schedule = machine.schedule(info.number); let mut ex = Executive::new(&mut state, &info, &machine, &schedule); ex.call( params, &mut Substate::new(), &mut NoopTracer, &mut NoopVMTracer, ) .unwrap() }; (&mut output[..(cmp::min(20, return_data.len()))]) .copy_from_slice(&return_data[..(cmp::min(20, return_data.len()))]); assert_eq!(result, U256::from(20025)); // Since transaction errored due to wasm was deactivated, result is just empty assert_eq!(output[..], [0u8; 20][..]); } }