forked from cerc-io/plugeth
f0cbebb19f
Added chain configuration options and write out during genesis database insertion. If no "config" was found, nothing is written to the database. Configurations are written on a per genesis base. This means that any chain (which is identified by it's genesis hash) can have their own chain settings.
281 lines
8.7 KiB
Go
281 lines
8.7 KiB
Go
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package ethreg
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import (
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"errors"
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"math/big"
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"github.com/ethereum/go-ethereum/accounts"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/compiler"
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"github.com/ethereum/go-ethereum/common/registrar"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/state"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/logger"
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"github.com/ethereum/go-ethereum/logger/glog"
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)
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// registryAPIBackend is a backend for an Ethereum Registry.
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type registryAPIBackend struct {
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config *core.ChainConfig
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bc *core.BlockChain
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chainDb ethdb.Database
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txPool *core.TxPool
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am *accounts.Manager
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}
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// PrivateRegistarAPI offers various functions to access the Ethereum registry.
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type PrivateRegistarAPI struct {
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config *core.ChainConfig
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be *registryAPIBackend
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}
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// NewPrivateRegistarAPI creates a new PrivateRegistarAPI instance.
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func NewPrivateRegistarAPI(config *core.ChainConfig, bc *core.BlockChain, chainDb ethdb.Database, txPool *core.TxPool, am *accounts.Manager) *PrivateRegistarAPI {
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return &PrivateRegistarAPI{
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config: config,
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be: ®istryAPIBackend{
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config: config,
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bc: bc,
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chainDb: chainDb,
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txPool: txPool,
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am: am,
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},
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}
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}
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// SetGlobalRegistrar allows clients to set the global registry for the node.
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// This method can be used to deploy a new registry. First zero out the current
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// address by calling the method with namereg = '0x0' and then call this method
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// again with '' as namereg. This will submit a transaction to the network which
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// will deploy a new registry on execution. The TX hash is returned. When called
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// with namereg '' and the current address is not zero the current global is
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// address is returned..
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func (api *PrivateRegistarAPI) SetGlobalRegistrar(namereg string, from common.Address) (string, error) {
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return registrar.New(api.be).SetGlobalRegistrar(namereg, from)
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}
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// SetHashReg queries the registry for a hash.
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func (api *PrivateRegistarAPI) SetHashReg(hashreg string, from common.Address) (string, error) {
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return registrar.New(api.be).SetHashReg(hashreg, from)
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}
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// SetUrlHint queries the registry for an url.
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func (api *PrivateRegistarAPI) SetUrlHint(hashreg string, from common.Address) (string, error) {
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return registrar.New(api.be).SetUrlHint(hashreg, from)
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}
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// SaveInfo stores contract information on the local file system.
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func (api *PrivateRegistarAPI) SaveInfo(info *compiler.ContractInfo, filename string) (contenthash common.Hash, err error) {
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return compiler.SaveInfo(info, filename)
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}
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// Register registers a new content hash in the registry.
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func (api *PrivateRegistarAPI) Register(sender common.Address, addr common.Address, contentHashHex string) (bool, error) {
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block := api.be.bc.CurrentBlock()
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state, err := state.New(block.Root(), api.be.chainDb)
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if err != nil {
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return false, err
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}
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codeb := state.GetCode(addr)
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codeHash := common.BytesToHash(crypto.Keccak256(codeb))
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contentHash := common.HexToHash(contentHashHex)
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_, err = registrar.New(api.be).SetHashToHash(sender, codeHash, contentHash)
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return err == nil, err
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}
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// RegisterUrl registers a new url in the registry.
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func (api *PrivateRegistarAPI) RegisterUrl(sender common.Address, contentHashHex string, url string) (bool, error) {
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_, err := registrar.New(api.be).SetUrlToHash(sender, common.HexToHash(contentHashHex), url)
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return err == nil, err
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}
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// callmsg is the message type used for call transations.
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type callmsg struct {
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from *state.StateObject
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to *common.Address
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gas, gasPrice *big.Int
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value *big.Int
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data []byte
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}
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// accessor boilerplate to implement core.Message
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func (m callmsg) From() (common.Address, error) {
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return m.from.Address(), nil
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}
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func (m callmsg) FromFrontier() (common.Address, error) {
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return m.from.Address(), nil
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}
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func (m callmsg) Nonce() uint64 {
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return m.from.Nonce()
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}
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func (m callmsg) To() *common.Address {
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return m.to
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}
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func (m callmsg) GasPrice() *big.Int {
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return m.gasPrice
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}
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func (m callmsg) Gas() *big.Int {
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return m.gas
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}
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func (m callmsg) Value() *big.Int {
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return m.value
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}
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func (m callmsg) Data() []byte {
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return m.data
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}
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// Call forms a transaction from the given arguments and tries to execute it on
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// a private VM with a copy of the state. Any changes are therefore only temporary
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// and not part of the actual state. This allows for local execution/queries.
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func (be *registryAPIBackend) Call(fromStr, toStr, valueStr, gasStr, gasPriceStr, dataStr string) (string, string, error) {
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block := be.bc.CurrentBlock()
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statedb, err := state.New(block.Root(), be.chainDb)
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if err != nil {
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return "", "", err
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}
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var from *state.StateObject
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if len(fromStr) == 0 {
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accounts, err := be.am.Accounts()
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if err != nil || len(accounts) == 0 {
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from = statedb.GetOrNewStateObject(common.Address{})
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} else {
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from = statedb.GetOrNewStateObject(accounts[0].Address)
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}
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} else {
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from = statedb.GetOrNewStateObject(common.HexToAddress(fromStr))
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}
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from.SetBalance(common.MaxBig)
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msg := callmsg{
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from: from,
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gas: common.Big(gasStr),
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gasPrice: common.Big(gasPriceStr),
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value: common.Big(valueStr),
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data: common.FromHex(dataStr),
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}
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if len(toStr) > 0 {
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addr := common.HexToAddress(toStr)
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msg.to = &addr
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}
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if msg.gas.Cmp(big.NewInt(0)) == 0 {
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msg.gas = big.NewInt(50000000)
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}
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if msg.gasPrice.Cmp(big.NewInt(0)) == 0 {
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msg.gasPrice = new(big.Int).Mul(big.NewInt(50), common.Shannon)
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}
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header := be.bc.CurrentBlock().Header()
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vmenv := core.NewEnv(statedb, be.config, be.bc, msg, header, vm.Config{})
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gp := new(core.GasPool).AddGas(common.MaxBig)
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res, gas, err := core.ApplyMessage(vmenv, msg, gp)
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return common.ToHex(res), gas.String(), err
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}
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// StorageAt returns the data stores in the state for the given address and location.
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func (be *registryAPIBackend) StorageAt(addr string, storageAddr string) string {
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block := be.bc.CurrentBlock()
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state, err := state.New(block.Root(), be.chainDb)
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if err != nil {
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return ""
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}
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return state.GetState(common.HexToAddress(addr), common.HexToHash(storageAddr)).Hex()
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}
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// Transact forms a transaction from the given arguments and submits it to the
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// transactio pool for execution.
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func (be *registryAPIBackend) Transact(fromStr, toStr, nonceStr, valueStr, gasStr, gasPriceStr, codeStr string) (string, error) {
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if len(toStr) > 0 && toStr != "0x" && !common.IsHexAddress(toStr) {
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return "", errors.New("invalid address")
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}
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var (
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from = common.HexToAddress(fromStr)
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to = common.HexToAddress(toStr)
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value = common.Big(valueStr)
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gas *big.Int
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price *big.Int
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data []byte
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contractCreation bool
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)
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if len(gasStr) == 0 {
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gas = big.NewInt(90000)
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} else {
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gas = common.Big(gasStr)
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}
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if len(gasPriceStr) == 0 {
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price = big.NewInt(10000000000000)
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} else {
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price = common.Big(gasPriceStr)
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}
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data = common.FromHex(codeStr)
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if len(toStr) == 0 {
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contractCreation = true
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}
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nonce := be.txPool.State().GetNonce(from)
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if len(nonceStr) != 0 {
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nonce = common.Big(nonceStr).Uint64()
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}
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var tx *types.Transaction
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if contractCreation {
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tx = types.NewContractCreation(nonce, value, gas, price, data)
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} else {
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tx = types.NewTransaction(nonce, to, value, gas, price, data)
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}
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acc := accounts.Account{from}
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signature, err := be.am.Sign(acc, tx.SigHash().Bytes())
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if err != nil {
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return "", err
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}
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signedTx, err := tx.WithSignature(signature)
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if err != nil {
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return "", err
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}
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be.txPool.SetLocal(signedTx)
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if err := be.txPool.Add(signedTx); err != nil {
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return "", nil
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}
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if contractCreation {
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addr := crypto.CreateAddress(from, nonce)
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glog.V(logger.Info).Infof("Tx(%s) created: %s\n", signedTx.Hash().Hex(), addr.Hex())
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} else {
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glog.V(logger.Info).Infof("Tx(%s) to: %s\n", signedTx.Hash().Hex(), tx.To().Hex())
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}
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return signedTx.Hash().Hex(), nil
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}
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