further

minigeth/core/error.go

+// Copyright 2014 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package core
+
+import (
+	"errors"
+
+	"github.com/ethereum/go-ethereum/core/types"
+)
+
+var (
+	// ErrKnownBlock is returned when a block to import is already known locally.
+	ErrKnownBlock = errors.New("block already known")
+
+	// ErrBannedHash is returned if a block to import is on the banned list.
+	ErrBannedHash = errors.New("banned hash")
+
+	// ErrNoGenesis is returned when there is no Genesis Block.
+	ErrNoGenesis = errors.New("genesis not found in chain")
+)
+
+// List of evm-call-message pre-checking errors. All state transition messages will
+// be pre-checked before execution. If any invalidation detected, the corresponding
+// error should be returned which is defined here.
+//
+// - If the pre-checking happens in the miner, then the transaction won't be packed.
+// - If the pre-checking happens in the block processing procedure, then a "BAD BLOCk"
+// error should be emitted.
+var (
+	// ErrNonceTooLow is returned if the nonce of a transaction is lower than the
+	// one present in the local chain.
+	ErrNonceTooLow = errors.New("nonce too low")
+
+	// ErrNonceTooHigh is returned if the nonce of a transaction is higher than the
+	// next one expected based on the local chain.
+	ErrNonceTooHigh = errors.New("nonce too high")
+
+	// ErrGasLimitReached is returned by the gas pool if the amount of gas required
+	// by a transaction is higher than what's left in the block.
+	ErrGasLimitReached = errors.New("gas limit reached")
+
+	// ErrInsufficientFundsForTransfer is returned if the transaction sender doesn't
+	// have enough funds for transfer(topmost call only).
+	ErrInsufficientFundsForTransfer = errors.New("insufficient funds for transfer")
+
+	// ErrInsufficientFunds is returned if the total cost of executing a transaction
+	// is higher than the balance of the user's account.
+	ErrInsufficientFunds = errors.New("insufficient funds for gas * price + value")
+
+	// ErrGasUintOverflow is returned when calculating gas usage.
+	ErrGasUintOverflow = errors.New("gas uint64 overflow")
+
+	// ErrIntrinsicGas is returned if the transaction is specified to use less gas
+	// than required to start the invocation.
+	ErrIntrinsicGas = errors.New("intrinsic gas too low")
+
+	// ErrTxTypeNotSupported is returned if a transaction is not supported in the
+	// current network configuration.
+	ErrTxTypeNotSupported = types.ErrTxTypeNotSupported
+
+	// ErrTipAboveFeeCap is a sanity error to ensure no one is able to specify a
+	// transaction with a tip higher than the total fee cap.
+	ErrTipAboveFeeCap = errors.New("max priority fee per gas higher than max fee per gas")
+
+	// ErrTipVeryHigh is a sanity error to avoid extremely big numbers specified
+	// in the tip field.
+	ErrTipVeryHigh = errors.New("max priority fee per gas higher than 2^256-1")
+
+	// ErrFeeCapVeryHigh is a sanity error to avoid extremely big numbers specified
+	// in the fee cap field.
+	ErrFeeCapVeryHigh = errors.New("max fee per gas higher than 2^256-1")
+
+	// ErrFeeCapTooLow is returned if the transaction fee cap is less than the
+	// the base fee of the block.
+	ErrFeeCapTooLow = errors.New("max fee per gas less than block base fee")
+
+	// ErrSenderNoEOA is returned if the sender of a transaction is a contract.
+	ErrSenderNoEOA = errors.New("sender not an eoa")
+)

minigeth/core/evm.go

+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package core
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/consensus"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/core/vm"
+)
+
+// ChainContext supports retrieving headers and consensus parameters from the
+// current blockchain to be used during transaction processing.
+type ChainContext interface {
+	// Engine retrieves the chain's consensus engine.
+	Engine() consensus.Engine
+
+	// GetHeader returns the hash corresponding to their hash.
+	GetHeader(common.Hash, uint64) *types.Header
+}
+
+// NewEVMBlockContext creates a new context for use in the EVM.
+func NewEVMBlockContext(header *types.Header, chain ChainContext, author *common.Address) vm.BlockContext {
+	var (
+		beneficiary common.Address
+		baseFee     *big.Int
+	)
+
+	// If we don't have an explicit author (i.e. not mining), extract from the header
+	if author == nil {
+		beneficiary, _ = chain.Engine().Author(header) // Ignore error, we're past header validation
+	} else {
+		beneficiary = *author
+	}
+	if header.BaseFee != nil {
+		baseFee = new(big.Int).Set(header.BaseFee)
+	}
+	return vm.BlockContext{
+		CanTransfer: CanTransfer,
+		Transfer:    Transfer,
+		GetHash:     GetHashFn(header, chain),
+		Coinbase:    beneficiary,
+		BlockNumber: new(big.Int).Set(header.Number),
+		Time:        new(big.Int).SetUint64(header.Time),
+		Difficulty:  new(big.Int).Set(header.Difficulty),
+		BaseFee:     baseFee,
+		GasLimit:    header.GasLimit,
+	}
+}
+
+// NewEVMTxContext creates a new transaction context for a single transaction.
+func NewEVMTxContext(msg Message) vm.TxContext {
+	return vm.TxContext{
+		Origin:   msg.From(),
+		GasPrice: new(big.Int).Set(msg.GasPrice()),
+	}
+}
+
+// GetHashFn returns a GetHashFunc which retrieves header hashes by number
+func GetHashFn(ref *types.Header, chain ChainContext) func(n uint64) common.Hash {
+	// Cache will initially contain [refHash.parent],
+	// Then fill up with [refHash.p, refHash.pp, refHash.ppp, ...]
+	var cache []common.Hash
+
+	return func(n uint64) common.Hash {
+		// If there's no hash cache yet, make one
+		if len(cache) == 0 {
+			cache = append(cache, ref.ParentHash)
+		}
+		if idx := ref.Number.Uint64() - n - 1; idx < uint64(len(cache)) {
+			return cache[idx]
+		}
+		// No luck in the cache, but we can start iterating from the last element we already know
+		lastKnownHash := cache[len(cache)-1]
+		lastKnownNumber := ref.Number.Uint64() - uint64(len(cache))
+
+		for {
+			header := chain.GetHeader(lastKnownHash, lastKnownNumber)
+			if header == nil {
+				break
+			}
+			cache = append(cache, header.ParentHash)
+			lastKnownHash = header.ParentHash
+			lastKnownNumber = header.Number.Uint64() - 1
+			if n == lastKnownNumber {
+				return lastKnownHash
+			}
+		}
+		return common.Hash{}
+	}
+}
+
+// CanTransfer checks whether there are enough funds in the address' account to make a transfer.
+// This does not take the necessary gas in to account to make the transfer valid.
+func CanTransfer(db vm.StateDB, addr common.Address, amount *big.Int) bool {
+	return db.GetBalance(addr).Cmp(amount) >= 0
+}
+
+// Transfer subtracts amount from sender and adds amount to recipient using the given Db
+func Transfer(db vm.StateDB, sender, recipient common.Address, amount *big.Int) {
+	db.SubBalance(sender, amount)
+	db.AddBalance(recipient, amount)
+}

minigeth/core/gaspool.go

+// Copyright 2015 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package core
+
+import (
+	"fmt"
+	"math"
+)
+
+// GasPool tracks the amount of gas available during execution of the transactions
+// in a block. The zero value is a pool with zero gas available.
+type GasPool uint64
+
+// AddGas makes gas available for execution.
+func (gp *GasPool) AddGas(amount uint64) *GasPool {
+	if uint64(*gp) > math.MaxUint64-amount {
+		panic("gas pool pushed above uint64")
+	}
+	*(*uint64)(gp) += amount
+	return gp
+}
+
+// SubGas deducts the given amount from the pool if enough gas is
+// available and returns an error otherwise.
+func (gp *GasPool) SubGas(amount uint64) error {
+	if uint64(*gp) < amount {
+		return ErrGasLimitReached
+	}
+	*(*uint64)(gp) -= amount
+	return nil
+}
+
+// Gas returns the amount of gas remaining in the pool.
+func (gp *GasPool) Gas() uint64 {
+	return uint64(*gp)
+}
+
+func (gp *GasPool) String() string {
+	return fmt.Sprintf("%d", *gp)
+}

minigeth/core/state_processor.go

@@ -18,11 +18,14 @@ package core
 
 import (
 	"fmt"
+	"math/big"
 
+	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/consensus"
 	"github.com/ethereum/go-ethereum/core/state"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/core/vm"
+	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/params"
 	/*"fmt"
 	"math/big"
@@ -96,7 +99,7 @@ func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg
 	return receipts, allLogs, *usedGas, nil
 }
 
-/*func applyTransaction(msg types.Message, config *params.ChainConfig, bc ChainContext, author *common.Address, gp *GasPool, statedb *state.StateDB, blockNumber *big.Int, blockHash common.Hash, tx *types.Transaction, usedGas *uint64, evm *vm.EVM) (*types.Receipt, error) {
+func applyTransaction(msg types.Message, config *params.ChainConfig, bc ChainContext, author *common.Address, gp *GasPool, statedb *state.StateDB, blockNumber *big.Int, blockHash common.Hash, tx *types.Transaction, usedGas *uint64, evm *vm.EVM) (*types.Receipt, error) {
 	// Create a new context to be used in the EVM environment.
 	txContext := NewEVMTxContext(msg)
 	evm.Reset(txContext, statedb)
@@ -155,4 +158,3 @@ func ApplyTransaction(config *params.ChainConfig, bc ChainContext, author *commo
 	vmenv := vm.NewEVM(blockContext, vm.TxContext{}, statedb, config, cfg)
 	return applyTransaction(msg, config, bc, author, gp, statedb, header.Number, header.Hash(), tx, usedGas, vmenv)
 }
-*/

minigeth/core/vm/interpreter.go

@@ -18,13 +18,34 @@ package vm
 
 import (
 	"hash"
+	"math/big"
 	"sync/atomic"
+	"time"
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/math"
 	//"github.com/ethereum/go-ethereum/log"
 )
 
+// **** stub Tracer ****
+type Tracer struct{}
+
+// CaptureStart implements the Tracer interface to initialize the tracing operation.
+func (jst *Tracer) CaptureStart(env *EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) {
+}
+
+// CaptureState implements the Tracer interface to trace a single step of VM execution.
+func (jst *Tracer) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, rData []byte, depth int, err error) {
+}
+
+// CaptureFault implements the Tracer interface to trace an execution fault
+func (jst *Tracer) CaptureFault(env *EVM, pc uint64, op OpCode, gas, cost uint64, scope *ScopeContext, depth int, err error) {
+}
+
+// CaptureEnd is called after the call finishes to finalize the tracing.
+func (jst *Tracer) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) {
+}
+
 // Config are the configuration options for the Interpreter
 type Config struct {
 	Debug                   bool   // Enables debugging