gaspersic/go-ethereum
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

cmd, core, eth, miner, params, tests: finalize the DAO fork

Browse Source
This commit is contained in:
Péter Szilágyi
2016-07-14 11:22:58 +03:00
parent 3291235711
commit 2c2e389b77
12 changed files with 7520 additions and 415 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
core/block_validator.go
View File

@ -17,7 +17,6 @@
package core
import (
"bytes"
"fmt"
"math/big"
"time"
@ -249,33 +248,7 @@ func ValidateHeader(config *ChainConfig, pow pow.PoW, header *types.Header, pare
}
}
// If all checks passed, validate the extra-data field for hard forks
return ValidateHeaderExtraData(config, header)
}
// ValidateHeaderExtraData validates the extra-data field of a block header to
// ensure it conforms to hard-fork rules.
func ValidateHeaderExtraData(config *ChainConfig, header *types.Header) error {
// DAO hard-fork extension to the header validity: a) if the node is no-fork,
// do not accept blocks in the [fork, fork+10) range with the fork specific
// extra-data set; b) if the node is pro-fork, require blocks in the specific
// range to have the unique extra-data set.
if daoBlock := config.DAOForkBlock; daoBlock != nil {
// Check whether the block is among the fork extra-override range
limit := new(big.Int).Add(daoBlock, params.DAOForkExtraRange)
if daoBlock.Cmp(header.Number) <= 0 && header.Number.Cmp(limit) < 0 {
// Depending whether we support or oppose the fork, verrift the extra-data contents
if config.DAOForkSupport {
if bytes.Compare(header.Extra, params.DAOForkBlockExtra) != 0 {
return ValidationError("DAO pro-fork bad block extra-data: 0x%x", header.Extra)
}
} else {
if bytes.Compare(header.Extra, params.DAOForkBlockExtra) == 0 {
return ValidationError("DAO no-fork bad block extra-data: 0x%x", header.Extra)
}
}
}
}
return nil
return ValidateDAOHeaderExtraData(config, header)
}
// CalcDifficulty is the difficulty adjustment algorithm. It returns

74
core/dao.go Normal file
View File

@ -0,0 +1,74 @@
// 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 (
"bytes"
"math/big"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/params"
)
// ValidateDAOHeaderExtraData validates the extra-data field of a block header to
// ensure it conforms to DAO hard-fork rules.
//
// DAO hard-fork extension to the header validity:
// a) if the node is no-fork, do not accept blocks in the [fork, fork+10) range
// with the fork specific extra-data set
// b) if the node is pro-fork, require blocks in the specific range to have the
// unique extra-data set.
func ValidateDAOHeaderExtraData(config *ChainConfig, header *types.Header) error {
// Short circuit validation if the node doesn't care about the DAO fork
if config.DAOForkBlock == nil {
return nil
}
// Make sure the block is within the fork's modified extra-data range
limit := new(big.Int).Add(config.DAOForkBlock, params.DAOForkExtraRange)
if header.Number.Cmp(config.DAOForkBlock) < 0 || header.Number.Cmp(limit) >= 0 {
return nil
}
// Depending whether we support or oppose the fork, validate the extra-data contents
if config.DAOForkSupport {
if bytes.Compare(header.Extra, params.DAOForkBlockExtra) != 0 {
return ValidationError("DAO pro-fork bad block extra-data: 0x%x", header.Extra)
}
} else {
if bytes.Compare(header.Extra, params.DAOForkBlockExtra) == 0 {
return ValidationError("DAO no-fork bad block extra-data: 0x%x", header.Extra)
}
}
// All ok, header has the same extra-data we expect
return nil
}
// ApplyDAOHardFork modifies the state database according to the DAO hard-fork
// rules, transferring all balances of a set of DAO accounts to a single refund
// contract.
func ApplyDAOHardFork(statedb *state.StateDB) {
// Retrieve the contract to refund balances into
refund := statedb.GetOrNewStateObject(params.DAORefundContract)
// Move every DAO account and extra-balance account funds into the refund contract
for _, addr := range params.DAODrainList {
if account := statedb.GetStateObject(addr); account != nil {
refund.AddBalance(account.Balance())
account.SetBalance(new(big.Int))
}
}
}

17
core/state_processor.go
View File

@ -25,7 +25,6 @@ import (
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
"github.com/ethereum/go-ethereum/params"
)
var (
@ -134,19 +133,3 @@ func AccumulateRewards(statedb *state.StateDB, header *types.Header, uncles []*t
}
statedb.AddBalance(header.Coinbase, reward)
}
// ApplyDAOHardFork modifies the state database according to the DAO hard-fork
// rules, transferring all balances of a set of DAO accounts to a single refund
// contract.
func ApplyDAOHardFork(statedb *state.StateDB) {
// Retrieve the contract to refund balances into
refund := statedb.GetOrNewStateObject(params.DAORefundContract)
// Move every DAO account and extra-balance account funds into the refund contract
for _, addr := range params.DAODrainList {
if account := statedb.GetStateObject(addr); account != nil {
refund.AddBalance(account.Balance())
account.SetBalance(new(big.Int))
}
}
}