From 69c8be7c86d5747e9ef2a59ed769d769fd9249f5 Mon Sep 17 00:00:00 2001
From: Pawan Singh Pal <pawansingh126@gmail.com>
Date: Fri, 8 Sep 2017 02:38:06 +0530
Subject: [PATCH] core: delete dao.go (#15113)
- dao.go is already present in consensus/misc
- core/dao.go is not used anywhere in the codebase
---
core/dao.go | 75 -----------------------------------------------------
1 file changed, 75 deletions(-)
delete mode 100644 core/dao.go
diff --git a/core/dao.go b/core/dao.go
deleted file mode 100644
index ff42a0e9d..000000000
--- a/core/dao.go
+++ /dev/null
@@ -1,75 +0,0 @@
-// 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"
- "fmt"
- "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 *params.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.Equal(header.Extra, params.DAOForkBlockExtra) {
- return fmt.Errorf("DAO pro-fork bad block extra-data: 0x%x", header.Extra)
- }
- } else {
- if bytes.Equal(header.Extra, params.DAOForkBlockExtra) {
- return fmt.Errorf("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
- if !statedb.Exist(params.DAORefundContract) {
- statedb.CreateAccount(params.DAORefundContract)
- }
-
- // Move every DAO account and extra-balance account funds into the refund contract
- for _, addr := range params.DAODrainList() {
- statedb.AddBalance(params.DAORefundContract, statedb.GetBalance(addr))
- statedb.SetBalance(addr, new(big.Int))
- }
-}
--
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