Example #1
0
// use testing instead of checker because checker does not support
// printing/logging in tests (-check.vv does not work)
func TestSnapshot2(t *testing.T) {
	db, _ := ethdb.NewMemDatabase()
	state := New(common.Hash{}, db)

	stateobjaddr0 := toAddr([]byte("so0"))
	stateobjaddr1 := toAddr([]byte("so1"))
	var storageaddr common.Hash

	data0 := common.BytesToHash([]byte{17})
	data1 := common.BytesToHash([]byte{18})

	state.SetState(stateobjaddr0, storageaddr, data0)
	state.SetState(stateobjaddr1, storageaddr, data1)

	// db, trie are already non-empty values
	so0 := state.GetStateObject(stateobjaddr0)
	so0.balance = big.NewInt(42)
	so0.nonce = 43
	so0.gasPool = big.NewInt(44)
	so0.code = []byte{'c', 'a', 'f', 'e'}
	so0.codeHash = so0.CodeHash()
	so0.remove = true
	so0.deleted = false
	so0.dirty = false
	state.SetStateObject(so0)

	// and one with deleted == true
	so1 := state.GetStateObject(stateobjaddr1)
	so1.balance = big.NewInt(52)
	so1.nonce = 53
	so1.gasPool = big.NewInt(54)
	so1.code = []byte{'c', 'a', 'f', 'e', '2'}
	so1.codeHash = so1.CodeHash()
	so1.remove = true
	so1.deleted = true
	so1.dirty = true
	state.SetStateObject(so1)

	so1 = state.GetStateObject(stateobjaddr1)
	if so1 != nil {
		t.Fatalf("deleted object not nil when getting")
	}

	snapshot := state.Copy()
	state.Set(snapshot)

	so0Restored := state.GetStateObject(stateobjaddr0)
	so1Restored := state.GetStateObject(stateobjaddr1)
	// non-deleted is equal (restored)
	compareStateObjects(so0Restored, so0, t)
	// deleted should be nil, both before and after restore of state copy
	if so1Restored != nil {
		t.Fatalf("deleted object not nil after restoring snapshot")
	}
}
Example #2
0
func TestEthashConcurrentVerify(t *testing.T) {
	eth, err := NewForTesting()
	if err != nil {
		t.Fatal(err)
	}
	defer os.RemoveAll(eth.Full.Dir)

	block := &testBlock{difficulty: big.NewInt(10)}
	nonce, md := eth.Search(block, nil)
	block.nonce = nonce
	block.mixDigest = common.BytesToHash(md)

	// Verify the block concurrently to check for data races.
	var wg sync.WaitGroup
	wg.Add(100)
	for i := 0; i < 100; i++ {
		go func() {
			if !eth.Verify(block) {
				t.Error("Block could not be verified")
			}
			wg.Done()
		}()
	}
	wg.Wait()
}
Example #3
0
func mustConvertHash(in string) common.Hash {
	out, err := hex.DecodeString(strings.TrimPrefix(in, "0x"))
	if err != nil {
		panic(fmt.Errorf("invalid hex: %q", in))
	}
	return common.BytesToHash(out)
}
Example #4
0
func (bc *ChainManager) setLastState() error {
	data, _ := bc.chainDb.Get([]byte("LastBlock"))
	if len(data) != 0 {
		block := bc.GetBlock(common.BytesToHash(data))
		if block != nil {
			bc.currentBlock = block
			bc.lastBlockHash = block.Hash()
		} else {
			glog.Infof("LastBlock (%x) not found. Recovering...\n", data)
			if bc.recover() {
				glog.Infof("Recover successful")
			} else {
				glog.Fatalf("Recover failed. Please report")
			}
		}
	} else {
		bc.Reset()
	}
	bc.td = bc.currentBlock.Td
	bc.currentGasLimit = CalcGasLimit(bc.currentBlock)

	if glog.V(logger.Info) {
		glog.Infof("Last block (#%v) %x TD=%v\n", bc.currentBlock.Number(), bc.currentBlock.Hash(), bc.td)
	}

	return nil
}
Example #5
0
// GetBlockByHash returns the canonical block by number or nil if not found
func GetBlockByNumber(db common.Database, number uint64) *types.Block {
	key, _ := db.Get(append(blockNumPre, big.NewInt(int64(number)).Bytes()...))
	if len(key) == 0 {
		return nil
	}

	return GetBlockByHash(db, common.BytesToHash(key))
}
Example #6
0
func SaveInfo(info *ContractInfo, filename string) (contenthash common.Hash, err error) {
	infojson, err := json.Marshal(info)
	if err != nil {
		return
	}
	contenthash = common.BytesToHash(crypto.Sha3(infojson))
	err = ioutil.WriteFile(filename, infojson, 0600)
	return
}
Example #7
0
func DeriveSha(list DerivableList) common.Hash {
	db, _ := ethdb.NewMemDatabase()
	trie := trie.New(nil, db)
	for i := 0; i < list.Len(); i++ {
		key, _ := rlp.EncodeToBytes(uint(i))
		trie.Update(key, list.GetRlp(i))
	}

	return common.BytesToHash(trie.Root())
}
Example #8
0
func (s *StateSuite) TestSnapshot(c *checker.C) {
	stateobjaddr := toAddr([]byte("aa"))
	var storageaddr common.Hash
	data1 := common.BytesToHash([]byte{42})
	data2 := common.BytesToHash([]byte{43})

	// set inital state object value
	s.state.SetState(stateobjaddr, storageaddr, data1)
	// get snapshot of current state
	snapshot := s.state.Copy()

	// set new state object value
	s.state.SetState(stateobjaddr, storageaddr, data2)
	// restore snapshot
	s.state.Set(snapshot)

	// get state storage value
	res := s.state.GetState(stateobjaddr, storageaddr)

	c.Assert(data1, checker.DeepEquals, res)
}
Example #9
0
func (self *CpuAgent) mine(work *Work, stop <-chan struct{}) {
	glog.V(logger.Debug).Infof("(re)started agent[%d]. mining...\n", self.index)

	// Mine
	nonce, mixDigest := self.pow.Search(work.Block, stop)
	if nonce != 0 {
		block := work.Block.WithMiningResult(nonce, common.BytesToHash(mixDigest))
		self.returnCh <- &Result{work, block}
	} else {
		self.returnCh <- nil
	}
}
Example #10
0
func (a *RemoteAgent) GetWork() [3]string {
	a.mu.Lock()
	defer a.mu.Unlock()

	var res [3]string

	if a.currentWork != nil {
		block := a.currentWork.Block

		res[0] = block.HashNoNonce().Hex()
		seedHash, _ := ethash.GetSeedHash(block.NumberU64())
		res[1] = common.BytesToHash(seedHash).Hex()
		// Calculate the "target" to be returned to the external miner
		n := big.NewInt(1)
		n.Lsh(n, 255)
		n.Div(n, block.Difficulty())
		n.Lsh(n, 1)
		res[2] = common.BytesToHash(n.Bytes()).Hex()

		a.work[block.HashNoNonce()] = a.currentWork
	}

	return res
}
Example #11
0
// log emits a log event to the environment for each opcode encountered. This is not to be confused with the
// LOG* opcode.
func (self *Vm) log(pc uint64, op OpCode, gas, cost *big.Int, memory *Memory, stack *stack, context *Context, err error) {
	if Debug {
		mem := make([]byte, len(memory.Data()))
		copy(mem, memory.Data())
		stck := make([]*big.Int, len(stack.Data()))
		copy(stck, stack.Data())

		object := context.self.(*state.StateObject)
		storage := make(map[common.Hash][]byte)
		object.EachStorage(func(k, v []byte) {
			storage[common.BytesToHash(k)] = v
		})

		self.env.AddStructLog(StructLog{pc, op, new(big.Int).Set(gas), cost, mem, stck, storage, err})
	}
}
Example #12
0
func (bc *ChainManager) recover() bool {
	data, _ := bc.chainDb.Get([]byte("checkpoint"))
	if len(data) != 0 {
		block := bc.GetBlock(common.BytesToHash(data))
		if block != nil {
			err := bc.chainDb.Put([]byte("LastBlock"), block.Hash().Bytes())
			if err != nil {
				glog.Fatalln("db write err:", err)
			}

			bc.currentBlock = block
			bc.lastBlockHash = block.Hash()
			return true
		}
	}
	return false
}
Example #13
0
func TestEthashConcurrentSearch(t *testing.T) {
	eth, err := NewForTesting()
	if err != nil {
		t.Fatal(err)
	}
	eth.Turbo(true)
	defer os.RemoveAll(eth.Full.Dir)

	type searchRes struct {
		n  uint64
		md []byte
	}

	var (
		block   = &testBlock{difficulty: big.NewInt(35000)}
		nsearch = 10
		wg      = new(sync.WaitGroup)
		found   = make(chan searchRes)
		stop    = make(chan struct{})
	)
	rand.Read(block.hashNoNonce[:])
	wg.Add(nsearch)
	// launch n searches concurrently.
	for i := 0; i < nsearch; i++ {
		go func() {
			nonce, md := eth.Search(block, stop)
			select {
			case found <- searchRes{n: nonce, md: md}:
			case <-stop:
			}
			wg.Done()
		}()
	}

	// wait for one of them to find the nonce
	res := <-found
	// stop the others
	close(stop)
	wg.Wait()

	block.nonce = res.n
	block.mixDigest = common.BytesToHash(res.md)
	if !eth.Verify(block) {
		t.Error("Block could not be verified")
	}
}
Example #14
0
func TestEthashSearchAcrossEpoch(t *testing.T) {
	eth, err := NewForTesting()
	if err != nil {
		t.Fatal(err)
	}
	defer os.RemoveAll(eth.Full.Dir)

	for i := epochLength - 40; i < epochLength+40; i++ {
		block := &testBlock{number: i, difficulty: big.NewInt(90)}
		rand.Read(block.hashNoNonce[:])
		nonce, md := eth.Search(block, nil)
		block.nonce = nonce
		block.mixDigest = common.BytesToHash(md)
		if !eth.Verify(block) {
			t.Fatalf("Block could not be verified")
		}
	}
}
Example #15
0
func (self *adminApi) Register(req *shared.Request) (interface{}, error) {
	args := new(RegisterArgs)
	if err := self.coder.Decode(req.Params, &args); err != nil {
		return nil, shared.NewDecodeParamError(err.Error())
	}

	sender := common.HexToAddress(args.Sender)
	// sender and contract address are passed as hex strings
	codeb := self.xeth.CodeAtBytes(args.Address)
	codeHash := common.BytesToHash(crypto.Sha3(codeb))
	contentHash := common.HexToHash(args.ContentHashHex)
	registry := registrar.New(self.xeth)

	_, err := registry.SetHashToHash(sender, codeHash, contentHash)
	if err != nil {
		return false, err
	}

	return true, nil
}
Example #16
0
// also called by admin.contractInfo.get
func FetchDocsForContract(contractAddress string, xeth *xeth.XEth, ds *docserver.DocServer) (content []byte, err error) {
	// retrieve contract hash from state
	codehex := xeth.CodeAt(contractAddress)
	codeb := xeth.CodeAtBytes(contractAddress)

	if codehex == "0x" {
		err = fmt.Errorf("contract (%v) not found", contractAddress)
		return
	}
	codehash := common.BytesToHash(crypto.Sha3(codeb))
	// set up nameresolver with natspecreg + urlhint contract addresses
	reg := registrar.New(xeth)

	// resolve host via HashReg/UrlHint Resolver
	hash, err := reg.HashToHash(codehash)
	if err != nil {
		return
	}
	if ds.HasScheme("bzz") {
		content, err = ds.Get("bzz://"+hash.Hex()[2:], "")
		if err == nil { // non-fatal
			return
		}
		err = nil
		//falling back to urlhint
	}

	uri, err := reg.HashToUrl(hash)
	if err != nil {
		return
	}

	// get content via http client and authenticate content using hash
	content, err = ds.GetAuthContent(uri, hash)
	if err != nil {
		return
	}
	return
}
Example #17
0
func (self *ethApi) GetTransactionReceipt(req *shared.Request) (interface{}, error) {
	args := new(HashArgs)
	if err := self.codec.Decode(req.Params, &args); err != nil {
		return nil, shared.NewDecodeParamError(err.Error())
	}

	txhash := common.BytesToHash(common.FromHex(args.Hash))
	tx, bhash, bnum, txi := self.xeth.EthTransactionByHash(args.Hash)
	rec := self.xeth.GetTxReceipt(txhash)
	// We could have an error of "not found". Should disambiguate
	// if err != nil {
	// 	return err, nil
	// }
	if rec != nil && tx != nil {
		v := NewReceiptRes(rec)
		v.BlockHash = newHexData(bhash)
		v.BlockNumber = newHexNum(bnum)
		v.TransactionIndex = newHexNum(txi)
		return v, nil
	}

	return nil, nil
}
Example #18
0
func (c *StateObject) getAddr(addr common.Hash) common.Hash {
	var ret []byte
	rlp.DecodeBytes(c.trie.Get(addr[:]), &ret)
	return common.BytesToHash(ret)
}
Example #19
0
func (s *StateDB) Root() common.Hash {
	return common.BytesToHash(s.trie.Root())
}
Example #20
0
func (self *Object) storage(addr []byte) []byte {
	return self.StateObject.GetState(common.BytesToHash(addr)).Bytes()
}
Example #21
0
import (
	"testing"

	"github.com/shiftcurrency/shift/common"
	"github.com/shiftcurrency/shift/crypto"
)

type testBackend struct {
	// contracts mock
	contracts map[string](map[string]string)
}

var (
	text     = "test"
	codehash = common.StringToHash("1234")
	hash     = common.BytesToHash(crypto.Sha3([]byte(text)))
	url      = "bzz://bzzhash/my/path/contr.act"
)

func NewTestBackend() *testBackend {
	HashRegAddr = common.BigToAddress(common.Big0).Hex() //[2:]
	UrlHintAddr = common.BigToAddress(common.Big1).Hex() //[2:]
	self := &testBackend{}
	self.contracts = make(map[string](map[string]string))

	self.contracts[HashRegAddr[2:]] = make(map[string]string)
	key := storageAddress(storageMapping(storageIdx2Addr(1), codehash[:]))
	self.contracts[HashRegAddr[2:]][key] = hash.Hex()

	self.contracts[UrlHintAddr[2:]] = make(map[string]string)
	mapaddr := storageMapping(storageIdx2Addr(1), hash[:])
Example #22
0
func (self *Env) GetHash(n uint64) common.Hash {
	return common.BytesToHash(crypto.Sha3([]byte(big.NewInt(int64(n)).String())))
}