func (self *XEth) PushTx(encodedTx string) (string, error) {
tx := new(types.Transaction)
err := rlp.DecodeBytes(common.FromHex(encodedTx), tx)
if err != nil {
glog.V(logger.Error).Infoln(err)
return "", err
}
err = self.backend.TxPool().Add(tx)
if err != nil {
return "", err
}
if tx.To() == nil {
from, err := tx.From()
if err != nil {
return "", err
}
addr := crypto.CreateAddress(from, tx.Nonce())
glog.V(logger.Info).Infof("Tx(%x) created: %x\n", tx.Hash(), addr)
} else {
glog.V(logger.Info).Infof("Tx(%x) to: %x\n", tx.Hash(), tx.To())
}
return tx.Hash().Hex(), nil
}
// wsHandshakeValidator returns a handler that verifies the origin during the
// websocket upgrade process. When a '*' is specified as an allowed origins all
// connections are accepted.
func wsHandshakeValidator(allowedOrigins []string) func(*websocket.Config, *http.Request) error {
origins := set.New()
allowAllOrigins := false
for _, origin := range allowedOrigins {
if origin == "*" {
allowAllOrigins = true
}
if origin != "" {
origins.Add(strings.ToLower(origin))
}
}
// allow localhost if no allowedOrigins are specified.
if len(origins.List()) == 0 {
origins.Add("http://localhost")
if hostname, err := os.Hostname(); err == nil {
origins.Add("http://" + strings.ToLower(hostname))
}
}
glog.V(logger.Debug).Infof("Allowed origin(s) for WS RPC interface %v\n", origins.List())
f := func(cfg *websocket.Config, req *http.Request) error {
origin := strings.ToLower(req.Header.Get("Origin"))
if allowAllOrigins || origins.Has(origin) {
return nil
}
glog.V(logger.Debug).Infof("origin '%s' not allowed on WS-RPC interface\n", origin)
return fmt.Errorf("origin %s not allowed", origin)
}
return f
}
func (pool *TxPool) resetState() {
currentState, err := pool.currentState()
if err != nil {
glog.V(logger.Error).Infof("Failed to get current state: %v", err)
return
}
managedState := state.ManageState(currentState)
if err != nil {
glog.V(logger.Error).Infof("Failed to get managed state: %v", err)
return
}
pool.pendingState = managedState
// validate the pool of pending transactions, this will remove
// any transactions that have been included in the block or
// have been invalidated because of another transaction (e.g.
// higher gas price)
pool.demoteUnexecutables()
// Update all accounts to the latest known pending nonce
for addr, list := range pool.pending {
txs := list.Flatten() // Heavy but will be cached and is needed by the miner anyway
pool.pendingState.SetNonce(addr, txs[len(txs)-1].Nonce()+1)
}
// Check the queue and move transactions over to the pending if possible
// or remove those that have become invalid
pool.promoteExecutables()
}
func (pool *TxPool) resetState() {
currentState, err := pool.currentState()
if err != nil {
glog.V(logger.Info).Infoln("failed to get current state: %v", err)
return
}
managedState := state.ManageState(currentState)
if err != nil {
glog.V(logger.Info).Infoln("failed to get managed state: %v", err)
return
}
pool.pendingState = managedState
// validate the pool of pending transactions, this will remove
// any transactions that have been included in the block or
// have been invalidated because of another transaction (e.g.
// higher gas price)
pool.validatePool()
// Loop over the pending transactions and base the nonce of the new
// pending transaction set.
for _, tx := range pool.pending {
if addr, err := tx.From(); err == nil {
// Set the nonce. Transaction nonce can never be lower
// than the state nonce; validatePool took care of that.
if pool.pendingState.GetNonce(addr) <= tx.Nonce() {
pool.pendingState.SetNonce(addr, tx.Nonce()+1)
}
}
}
// Check the queue and move transactions over to the pending if possible
// or remove those that have become invalid
pool.checkQueue()
}
// resolve attempts to find the current endpoint for the destination
// using discovery.
//
// Resolve operations are throttled with backoff to avoid flooding the
// discovery network with useless queries for nodes that don't exist.
// The backoff delay resets when the node is found.
func (t *dialTask) resolve(srv *Server) bool {
if srv.ntab == nil {
glog.V(logger.Debug).Infof("can't resolve node %x: discovery is disabled", t.dest.ID[:6])
return false
}
if t.resolveDelay == 0 {
t.resolveDelay = initialResolveDelay
}
if time.Since(t.lastResolved) < t.resolveDelay {
return false
}
resolved := srv.ntab.Resolve(t.dest.ID)
t.lastResolved = time.Now()
if resolved == nil {
t.resolveDelay *= 2
if t.resolveDelay > maxResolveDelay {
t.resolveDelay = maxResolveDelay
}
glog.V(logger.Debug).Infof("resolving node %x failed (new delay: %v)", t.dest.ID[:6], t.resolveDelay)
return false
}
// The node was found.
t.resolveDelay = initialResolveDelay
t.dest = resolved
glog.V(logger.Debug).Infof("resolved node %x: %v:%d", t.dest.ID[:6], t.dest.IP, t.dest.TCP)
return true
}
// enqueue schedules a new future import operation, if the block to be imported
// has not yet been seen.
func (f *Fetcher) enqueue(peer string, block *types.Block) {
hash := block.Hash()
// Ensure the peer isn't DOSing us
count := f.queues[peer] + 1
if count > blockLimit {
glog.V(logger.Debug).Infof("Peer %s: discarded block #%d [%x], exceeded allowance (%d)", peer, block.NumberU64(), hash.Bytes()[:4], blockLimit)
return
}
// Discard any past or too distant blocks
if dist := int64(block.NumberU64()) - int64(f.chainHeight()); dist < -maxUncleDist || dist > maxQueueDist {
glog.V(logger.Debug).Infof("Peer %s: discarded block #%d [%x], distance %d", peer, block.NumberU64(), hash.Bytes()[:4], dist)
discardMeter.Mark(1)
return
}
// Schedule the block for future importing
if _, ok := f.queued[hash]; !ok {
op := &inject{
origin: peer,
block: block,
}
f.queues[peer] = count
f.queued[hash] = op
f.queue.Push(op, -float32(block.NumberU64()))
if glog.V(logger.Debug) {
glog.Infof("Peer %s: queued block #%d [%x], total %v", peer, block.NumberU64(), hash.Bytes()[:4], f.queue.Size())
}
}
}
func (self *Registrar) SetHashReg(hashreg string, addr common.Address) (txhash string, err error) {
if hashreg != "" {
HashRegAddr = hashreg
} else {
if !zero.MatchString(HashRegAddr) {
return
}
nameHex, extra := encodeName(HashRegName, 2)
hashRegAbi := resolveAbi + nameHex + extra
glog.V(logger.Detail).Infof("\ncall HashRegAddr %v with %v\n", GlobalRegistrarAddr, hashRegAbi)
var res string
res, _, err = self.backend.Call("", GlobalRegistrarAddr, "", "", "", hashRegAbi)
if len(res) >= 40 {
HashRegAddr = "0x" + res[len(res)-40:len(res)]
}
if err != nil || zero.MatchString(HashRegAddr) {
if (addr == common.Address{}) {
err = fmt.Errorf("HashReg address not found and sender for creation not given")
return
}
txhash, err = self.backend.Transact(addr.Hex(), "", "", "", "", "", HashRegCode)
if err != nil {
err = fmt.Errorf("HashReg address not found and sender for creation failed: %v", err)
}
glog.V(logger.Detail).Infof("created HashRegAddr @ txhash %v\n", txhash)
} else {
glog.V(logger.Detail).Infof("HashRegAddr found at @ %v\n", HashRegAddr)
return
}
}
return
}
func ecrecoverFunc(in []byte) []byte {
in = common.RightPadBytes(in, 128)
// "in" is (hash, v, r, s), each 32 bytes
// but for ecrecover we want (r, s, v)
r := common.BytesToBig(in[64:96])
s := common.BytesToBig(in[96:128])
// Treat V as a 256bit integer
vbig := common.Bytes2Big(in[32:64])
v := byte(vbig.Uint64())
if !crypto.ValidateSignatureValues(v, r, s) {
glog.V(logger.Debug).Infof("EC RECOVER FAIL: v, r or s value invalid")
return nil
}
// v needs to be at the end and normalized for libsecp256k1
vbignormal := new(big.Int).Sub(vbig, big.NewInt(27))
vnormal := byte(vbignormal.Uint64())
rsv := append(in[64:128], vnormal)
pubKey, err := crypto.Ecrecover(in[:32], rsv)
// make sure the public key is a valid one
if err != nil {
glog.V(logger.Error).Infof("EC RECOVER FAIL: ", err)
return nil
}
// the first byte of pubkey is bitcoin heritage
return common.LeftPadBytes(crypto.Sha3(pubKey[1:])[12:], 32)
}
// parseNodes parses a list of discovery node URLs loaded from a .json file.
func (cfg *Config) parseNodes(file string) []*discover.Node {
// Short circuit if no node config is present
path := filepath.Join(cfg.DataDir, file)
if _, err := os.Stat(path); err != nil {
return nil
}
// Load the nodes from the config file
blob, err := ioutil.ReadFile(path)
if err != nil {
glog.V(logger.Error).Infof("Failed to access nodes: %v", err)
return nil
}
nodelist := []string{}
if err := json.Unmarshal(blob, &nodelist); err != nil {
glog.V(logger.Error).Infof("Failed to load nodes: %v", err)
return nil
}
// Interpret the list as a discovery node array
var nodes []*discover.Node
for _, url := range nodelist {
if url == "" {
continue
}
node, err := discover.ParseNode(url)
if err != nil {
glog.V(logger.Error).Infof("Node URL %s: %v\n", url, err)
continue
}
nodes = append(nodes, node)
}
return nodes
}
func (self *Registrar) SetUrlHint(urlhint string, addr common.Address) (txhash string, err error) {
if urlhint != "" {
UrlHintAddr = urlhint
} else {
if !zero.MatchString(UrlHintAddr) {
return
}
nameHex, extra := encodeName(UrlHintName, 2)
urlHintAbi := resolveAbi + nameHex + extra
glog.V(logger.Detail).Infof("UrlHint address query data: %s to %s", urlHintAbi, GlobalRegistrarAddr)
var res string
res, _, err = self.backend.Call("", GlobalRegistrarAddr, "", "", "", urlHintAbi)
if len(res) >= 40 {
UrlHintAddr = "0x" + res[len(res)-40:len(res)]
}
if err != nil || zero.MatchString(UrlHintAddr) {
if (addr == common.Address{}) {
err = fmt.Errorf("UrlHint address not found and sender for creation not given")
return
}
txhash, err = self.backend.Transact(addr.Hex(), "", "", "", "210000", "", UrlHintCode)
if err != nil {
err = fmt.Errorf("UrlHint address not found and sender for creation failed: %v", err)
}
glog.V(logger.Detail).Infof("created UrlHint @ txhash %v\n", txhash)
} else {
glog.V(logger.Detail).Infof("UrlHint found @ %v\n", HashRegAddr)
return
}
}
return
}
// add inserts a new envelope into the message pool to be distributed within the
// whisper network. It also inserts the envelope into the expiration pool at the
// appropriate time-stamp.
func (self *Whisper) add(envelope *Envelope) error {
self.poolMu.Lock()
defer self.poolMu.Unlock()
// Insert the message into the tracked pool
hash := envelope.Hash()
if _, ok := self.messages[hash]; ok {
glog.V(logger.Detail).Infof("whisper envelope already cached: %x\n", envelope)
return nil
}
self.messages[hash] = envelope
// Insert the message into the expiration pool for later removal
if self.expirations[envelope.Expiry] == nil {
self.expirations[envelope.Expiry] = set.NewNonTS()
}
if !self.expirations[envelope.Expiry].Has(hash) {
self.expirations[envelope.Expiry].Add(hash)
// Notify the local node of a message arrival
go self.postEvent(envelope)
}
glog.V(logger.Detail).Infof("cached whisper envelope %x\n", envelope)
return nil
}
// newErrorResponse creates a JSON RPC error response for a specific request id,
// containing the specified error code and error message. Beside returning the
// error to the caller, it also sets the ret_error and ret_response JavaScript
// variables.
func newErrorResponse(call otto.FunctionCall, code int, msg string, id interface{}) (response otto.Value) {
// Bundle the error into a JSON RPC call response
res := rpc.JSONErrResponse{
Version: rpc.JSONRPCVersion,
Id: id,
Error: rpc.JSONError{
Code: code,
Message: msg,
},
}
// Serialize the error response into JavaScript variables
errObj, err := json.Marshal(res.Error)
if err != nil {
glog.V(logger.Error).Infof("Failed to serialize JSON RPC error: %v", err)
}
resObj, err := json.Marshal(res)
if err != nil {
glog.V(logger.Error).Infof("Failed to serialize JSON RPC error response: %v", err)
}
if _, err = call.Otto.Run("ret_error = " + string(errObj)); err != nil {
glog.V(logger.Error).Infof("Failed to set `ret_error` to the occurred error: %v", err)
}
resVal, err := call.Otto.Run("ret_response = " + string(resObj))
if err != nil {
glog.V(logger.Error).Infof("Failed to set `ret_response` to the JSON RPC response: %v", err)
}
return resVal
}
// UnlockAccount asks the user agent for the user password and tries to unlock the account.
// It will try 3 attempts before giving up.
func (fe *RemoteFrontend) UnlockAccount(address []byte) bool {
if !fe.enabled {
return false
}
err := fe.send(AskPasswordMethod, common.Bytes2Hex(address))
if err != nil {
glog.V(logger.Error).Infof("Unable to send password request to agent - %v\n", err)
return false
}
passwdRes, err := fe.recv()
if err != nil {
glog.V(logger.Error).Infof("Unable to recv password response from agent - %v\n", err)
return false
}
if passwd, ok := passwdRes.Result.(string); ok {
err = fe.mgr.Unlock(common.BytesToAddress(address), passwd)
}
if err == nil {
return true
}
glog.V(logger.Debug).Infoln("3 invalid account unlock attempts")
return false
}
// BroadcastBlock will either propagate a block to a subset of it's peers, or
// will only announce it's availability (depending what's requested).
func (pm *ProtocolManager) BroadcastBlock(block *types.Block, propagate bool) {
hash := block.Hash()
peers := pm.peers.PeersWithoutBlock(hash)
// If propagation is requested, send to a subset of the peer
if propagate {
// Calculate the TD of the block (it's not imported yet, so block.Td is not valid)
var td *big.Int
if parent := pm.chainman.GetBlock(block.ParentHash()); parent != nil {
td = new(big.Int).Add(parent.Td, block.Difficulty())
} else {
glog.V(logger.Error).Infof("propagating dangling block #%d [%x]", block.NumberU64(), hash[:4])
return
}
// Send the block to a subset of our peers
transfer := peers[:int(math.Sqrt(float64(len(peers))))]
for _, peer := range transfer {
peer.SendNewBlock(block, td)
}
glog.V(logger.Detail).Infof("propagated block %x to %d peers in %v", hash[:4], len(transfer), time.Since(block.ReceivedAt))
}
// Otherwise if the block is indeed in out own chain, announce it
if pm.chainman.HasBlock(hash) {
for _, peer := range peers {
peer.SendNewBlockHashes([]common.Hash{hash})
}
glog.V(logger.Detail).Infof("announced block %x to %d peers in %v", hash[:4], len(peers), time.Since(block.ReceivedAt))
}
}
// Map adds a port mapping on m and keeps it alive until c is closed.
// This function is typically invoked in its own goroutine.
func Map(m Interface, c chan struct{}, protocol string, extport, intport int, name string) {
refresh := time.NewTimer(mapUpdateInterval)
defer func() {
refresh.Stop()
glog.V(logger.Debug).Infof("deleting port mapping: %s %d -> %d (%s) using %s\n", protocol, extport, intport, name, m)
m.DeleteMapping(protocol, extport, intport)
}()
if err := m.AddMapping(protocol, intport, extport, name, mapTimeout); err != nil {
glog.V(logger.Debug).Infof("network port %s:%d could not be mapped: %v\n", protocol, intport, err)
} else {
glog.V(logger.Info).Infof("mapped network port %s:%d -> %d (%s) using %s\n", protocol, extport, intport, name, m)
}
for {
select {
case _, ok := <-c:
if !ok {
return
}
case <-refresh.C:
glog.V(logger.Detail).Infof("refresh port mapping %s:%d -> %d (%s) using %s\n", protocol, extport, intport, name, m)
if err := m.AddMapping(protocol, intport, extport, name, mapTimeout); err != nil {
glog.V(logger.Debug).Infof("network port %s:%d could not be mapped: %v\n", protocol, intport, err)
}
refresh.Reset(mapUpdateInterval)
}
}
}
// handle is the callback invoked to manage the life cycle of an exp peer. When
// this function terminates, the peer is disconnected.
func (pm *ProtocolManager) handle(p *peer) error {
glog.V(logger.Debug).Infof("%v: peer connected [%s]", p, p.Name())
// Execute the Expanse handshake
td, head, genesis := pm.chainman.Status()
if err := p.Handshake(td, head, genesis); err != nil {
glog.V(logger.Debug).Infof("%v: handshake failed: %v", p, err)
return err
}
// Register the peer locally
glog.V(logger.Detail).Infof("%v: adding peer", p)
if err := pm.peers.Register(p); err != nil {
glog.V(logger.Error).Infof("%v: addition failed: %v", p, err)
return err
}
defer pm.removePeer(p.id)
// Register the peer in the downloader. If the downloader considers it banned, we disconnect
if err := pm.downloader.RegisterPeer(p.id, p.version, p.Head(), p.RequestHashes, p.RequestHashesFromNumber, p.RequestBlocks); err != nil {
return err
}
// Propagate existing transactions. new transactions appearing
// after this will be sent via broadcasts.
pm.syncTransactions(p)
// main loop. handle incoming messages.
for {
if err := pm.handleMsg(p); err != nil {
glog.V(logger.Debug).Infof("%v: message handling failed: %v", p, err)
return err
}
}
return nil
}
func sendBadBlockReport(block *types.Block, err error) {
if !EnableBadBlockReporting {
return
}
var (
blockRLP, _ = rlp.EncodeToBytes(block)
params = map[string]interface{}{
"block": common.Bytes2Hex(blockRLP),
"blockHash": block.Hash().Hex(),
"errortype": err.Error(),
"client": "go",
}
)
if !block.ReceivedAt.IsZero() {
params["receivedAt"] = block.ReceivedAt.UTC().String()
}
if p, ok := block.ReceivedFrom.(*peer); ok {
params["receivedFrom"] = map[string]interface{}{
"enode": fmt.Sprintf("enode://%x@%v", p.ID(), p.RemoteAddr()),
"name": p.Name(),
"protocolVersion": p.version,
}
}
jsonStr, _ := json.Marshal(map[string]interface{}{"method": "eth_badBlock", "id": "1", "jsonrpc": "2.0", "params": []interface{}{params}})
client := http.Client{Timeout: 8 * time.Second}
resp, err := client.Post(badBlocksURL, "application/json", bytes.NewReader(jsonStr))
if err != nil {
glog.V(logger.Debug).Infoln(err)
return
}
glog.V(logger.Debug).Infof("Bad Block Report posted (%d)", resp.StatusCode)
resp.Body.Close()
}
func (env *Work) commitTransactions(transactions types.Transactions, gasPrice *big.Int, bc *core.BlockChain) {
gp := new(core.GasPool).AddGas(env.header.GasLimit)
for _, tx := range transactions {
// Error may be ignored here. The error has already been checked
// during transaction acceptance is the transaction pool.
from, _ := tx.From()
// Check if it falls within margin. Txs from owned accounts are always processed.
if tx.GasPrice().Cmp(gasPrice) < 0 && !env.ownedAccounts.Has(from) {
// ignore the transaction and transactor. We ignore the transactor
// because nonce will fail after ignoring this transaction so there's
// no point
env.lowGasTransactors.Add(from)
glog.V(logger.Info).Infof("transaction(%x) below gas price (tx=%v ask=%v). All sequential txs from this address(%x) will be ignored\n", tx.Hash().Bytes()[:4], common.CurrencyToString(tx.GasPrice()), common.CurrencyToString(gasPrice), from[:4])
}
// Continue with the next transaction if the transaction sender is included in
// the low gas tx set. This will also remove the tx and all sequential transaction
// from this transactor
if env.lowGasTransactors.Has(from) {
// add tx to the low gas set. This will be removed at the end of the run
// owned accounts are ignored
if !env.ownedAccounts.Has(from) {
env.lowGasTxs = append(env.lowGasTxs, tx)
}
continue
}
// Move on to the next transaction when the transactor is in ignored transactions set
// This may occur when a transaction hits the gas limit. When a gas limit is hit and
// the transaction is processed (that could potentially be included in the block) it
// will throw a nonce error because the previous transaction hasn't been processed.
// Therefor we need to ignore any transaction after the ignored one.
if env.ignoredTransactors.Has(from) {
continue
}
env.state.StartRecord(tx.Hash(), common.Hash{}, 0)
err := env.commitTransaction(tx, bc, gp)
switch {
case core.IsGasLimitErr(err):
// ignore the transactor so no nonce errors will be thrown for this account
// next time the worker is run, they'll be picked up again.
env.ignoredTransactors.Add(from)
glog.V(logger.Detail).Infof("Gas limit reached for (%x) in this block. Continue to try smaller txs\n", from[:4])
case err != nil:
env.remove.Add(tx.Hash())
if glog.V(logger.Detail) {
glog.Infof("TX (%x) failed, will be removed: %v\n", tx.Hash().Bytes()[:4], err)
}
default:
env.tcount++
}
}
}
// UnregisterPeer remove a peer from the known list, preventing any action from
// the specified peer.
func (d *Downloader) UnregisterPeer(id string) error {
glog.V(logger.Detail).Infoln("Unregistering peer", id)
if err := d.peers.Unregister(id); err != nil {
glog.V(logger.Error).Infoln("Unregister failed:", err)
return err
}
return nil
}
// MustMakeChainConfigFromDb reads the chain configuration from the given database.
func MustMakeChainConfigFromDb(ctx *cli.Context, db ethdb.Database) *core.ChainConfig {
// If the chain is already initialized, use any existing chain configs
config := new(core.ChainConfig)
genesis := core.GetBlock(db, core.GetCanonicalHash(db, 0))
if genesis != nil {
storedConfig, err := core.GetChainConfig(db, genesis.Hash())
switch err {
case nil:
config = storedConfig
case core.ChainConfigNotFoundErr:
// No configs found, use empty, will populate below
default:
Fatalf("Could not make chain configuration: %v", err)
}
}
// Set any missing fields due to them being unset or system upgrade
if config.HomesteadBlock == nil {
if ctx.GlobalBool(TestNetFlag.Name) {
config.HomesteadBlock = params.TestNetHomesteadBlock
} else {
config.HomesteadBlock = params.MainNetHomesteadBlock
}
}
if config.DAOForkBlock == nil {
if ctx.GlobalBool(TestNetFlag.Name) {
config.DAOForkBlock = params.TestNetDAOForkBlock
} else {
config.DAOForkBlock = params.MainNetDAOForkBlock
}
config.DAOForkSupport = true
}
// Force override any existing configs if explicitly requested
switch {
case ctx.GlobalBool(SupportDAOFork.Name):
config.DAOForkSupport = true
case ctx.GlobalBool(OpposeDAOFork.Name):
config.DAOForkSupport = false
}
// Temporarilly display a proper message so the user knows which fork its on
if !ctx.GlobalBool(TestNetFlag.Name) && (genesis == nil || genesis.Hash() == common.HexToHash("0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3")) {
choice := "SUPPORT"
if !config.DAOForkSupport {
choice = "OPPOSE"
}
current := fmt.Sprintf(" is currently configured to %s the DAO hard-fork!", choice)
howtoswap := fmt.Sprintf("You can change your choice prior to block #%v with --support-dao-fork or --oppose-dao-fork.", config.DAOForkBlock)
howtosync := fmt.Sprintf("After the hard-fork block #%v passed, changing chains requires a resync from scratch!", config.DAOForkBlock)
separator := strings.Repeat("-", len(howtoswap))
glog.V(logger.Warn).Info(separator)
glog.V(logger.Warn).Info(current)
glog.V(logger.Warn).Info(howtoswap)
glog.V(logger.Warn).Info(howtosync)
glog.V(logger.Warn).Info(separator)
}
return config
}
func (p *Peer) run() DiscReason {
var (
writeStart = make(chan struct{}, 1)
writeErr = make(chan error, 1)
readErr = make(chan error, 1)
reason DiscReason
requested bool
)
p.wg.Add(2)
go p.readLoop(readErr)
go p.pingLoop()
// Start all protocol handlers.
writeStart <- struct{}{}
p.startProtocols(writeStart, writeErr)
// Wait for an error or disconnect.
loop:
for {
select {
case err := <-writeErr:
// A write finished. Allow the next write to start if
// there was no error.
if err != nil {
glog.V(logger.Detail).Infof("%v: write error: %v\n", p, err)
reason = DiscNetworkError
break loop
}
writeStart <- struct{}{}
case err := <-readErr:
if r, ok := err.(DiscReason); ok {
glog.V(logger.Debug).Infof("%v: remote requested disconnect: %v\n", p, r)
requested = true
reason = r
} else {
glog.V(logger.Detail).Infof("%v: read error: %v\n", p, err)
reason = DiscNetworkError
}
break loop
case err := <-p.protoErr:
reason = discReasonForError(err)
glog.V(logger.Debug).Infof("%v: protocol error: %v (%v)\n", p, err, reason)
break loop
case reason = <-p.disc:
glog.V(logger.Debug).Infof("%v: locally requested disconnect: %v\n", p, reason)
break loop
}
}
close(p.closed)
p.rw.close(reason)
p.wg.Wait()
if requested {
reason = DiscRequested
}
return reason
}
// NewBlockChain returns a fully initialised block chain using information
// available in the database. It initialiser the default Ethereum Validator and
// Processor.
func NewBlockChain(chainDb ethdb.Database, pow pow.PoW, mux *event.TypeMux) (*BlockChain, error) {
headerCache, _ := lru.New(headerCacheLimit)
bodyCache, _ := lru.New(bodyCacheLimit)
bodyRLPCache, _ := lru.New(bodyCacheLimit)
tdCache, _ := lru.New(tdCacheLimit)
blockCache, _ := lru.New(blockCacheLimit)
futureBlocks, _ := lru.New(maxFutureBlocks)
bc := &BlockChain{
chainDb: chainDb,
eventMux: mux,
quit: make(chan struct{}),
headerCache: headerCache,
bodyCache: bodyCache,
bodyRLPCache: bodyRLPCache,
tdCache: tdCache,
blockCache: blockCache,
futureBlocks: futureBlocks,
pow: pow,
}
// Seed a fast but crypto originating random generator
seed, err := crand.Int(crand.Reader, big.NewInt(math.MaxInt64))
if err != nil {
return nil, err
}
bc.rand = mrand.New(mrand.NewSource(seed.Int64()))
bc.SetValidator(NewBlockValidator(bc, pow))
bc.SetProcessor(NewStateProcessor(bc))
bc.genesisBlock = bc.GetBlockByNumber(0)
if bc.genesisBlock == nil {
reader, err := NewDefaultGenesisReader()
if err != nil {
return nil, err
}
bc.genesisBlock, err = WriteGenesisBlock(chainDb, reader)
if err != nil {
return nil, err
}
glog.V(logger.Info).Infoln("WARNING: Wrote default expanse genesis block")
}
if err := bc.loadLastState(); err != nil {
return nil, err
}
// Check the current state of the block hashes and make sure that we do not have any of the bad blocks in our chain
for hash, _ := range BadHashes {
if header := bc.GetHeader(hash); header != nil {
glog.V(logger.Error).Infof("Found bad hash, rewinding chain to block #%d [%x…]", header.Number, header.ParentHash[:4])
bc.SetHead(header.Number.Uint64() - 1)
glog.V(logger.Error).Infoln("Chain rewind was successful, resuming normal operation")
}
}
// Take ownership of this particular state
go bc.update()
return bc, nil
}
func sendJSON(w io.Writer, v interface{}) {
if glog.V(logger.Detail) {
if payload, err := json.MarshalIndent(v, "", "\t"); err == nil {
glog.Infof("Sending payload: %s", payload)
}
}
if err := json.NewEncoder(w).Encode(v); err != nil {
glog.V(logger.Error).Infoln("Error sending JSON:", err)
}
}
func (w *watcher) loop() {
defer func() {
w.ac.mu.Lock()
w.running = false
w.starting = false
w.ac.mu.Unlock()
}()
err := notify.Watch(w.ac.keydir, w.ev, notify.All)
if err != nil {
glog.V(logger.Detail).Infof("can't watch %s: %v", w.ac.keydir, err)
return
}
defer notify.Stop(w.ev)
glog.V(logger.Detail).Infof("now watching %s", w.ac.keydir)
defer glog.V(logger.Detail).Infof("no longer watching %s", w.ac.keydir)
w.ac.mu.Lock()
w.running = true
w.ac.mu.Unlock()
// Wait for file system events and reload.
// When an event occurs, the reload call is delayed a bit so that
// multiple events arriving quickly only cause a single reload.
var (
debounce = time.NewTimer(0)
debounceDuration = 500 * time.Millisecond
inCycle, hadEvent bool
)
defer debounce.Stop()
for {
select {
case <-w.quit:
return
case <-w.ev:
if !inCycle {
debounce.Reset(debounceDuration)
inCycle = true
} else {
hadEvent = true
}
case <-debounce.C:
w.ac.mu.Lock()
w.ac.reload()
w.ac.mu.Unlock()
if hadEvent {
debounce.Reset(debounceDuration)
inCycle, hadEvent = true, false
} else {
inCycle, hadEvent = false, false
}
}
}
}
func (t *udp) send(toaddr *net.UDPAddr, ptype byte, req interface{}) error {
packet, err := encodePacket(t.priv, ptype, req)
if err != nil {
return err
}
glog.V(logger.Detail).Infof(">>> %v %T\n", toaddr, req)
if _, err = t.conn.WriteToUDP(packet, toaddr); err != nil {
glog.V(logger.Detail).Infoln("UDP send failed:", err)
}
return err
}
// dial performs the actual connection attempt.
func (t *dialTask) dial(srv *Server, dest *discover.Node) bool {
addr := &net.TCPAddr{IP: dest.IP, Port: int(dest.TCP)}
glog.V(logger.Debug).Infof("dial tcp %v (%x)\n", addr, dest.ID[:6])
fd, err := srv.Dialer.Dial("tcp", addr.String())
if err != nil {
glog.V(logger.Detail).Infof("%v", err)
return false
}
mfd := newMeteredConn(fd, false)
srv.setupConn(mfd, t.flags, dest)
return true
}
func (self *StateTransition) transitionState() (ret []byte, usedGas *big.Int, err error) {
if err = self.preCheck(); err != nil {
return
}
msg := self.msg
sender, _ := self.From() // err checked in preCheck
// Pay intrinsic gas
if err = self.UseGas(IntrinsicGas(self.data)); err != nil {
return nil, nil, InvalidTxError(err)
}
vmenv := self.env
var ref vm.ContextRef
if MessageCreatesContract(msg) {
ret, err, ref = vmenv.Create(sender, self.data, self.gas, self.gasPrice, self.value)
if err == nil {
dataGas := big.NewInt(int64(len(ret)))
dataGas.Mul(dataGas, params.CreateDataGas)
if err := self.UseGas(dataGas); err == nil {
ref.SetCode(ret)
} else {
ret = nil // does not affect consensus but useful for StateTests validations
glog.V(logger.Core).Infoln("Insufficient gas for creating code. Require", dataGas, "and have", self.gas)
}
}
glog.V(logger.Core).Infoln("VM create err:", err)
} else {
// Increment the nonce for the next transaction
self.state.SetNonce(sender.Address(), sender.Nonce()+1)
ret, err = vmenv.Call(sender, self.To().Address(), self.data, self.gas, self.gasPrice, self.value)
glog.V(logger.Core).Infoln("VM call err:", err)
}
if err != nil && IsValueTransferErr(err) {
return nil, nil, InvalidTxError(err)
}
// We aren't interested in errors here. Errors returned by the VM are non-consensus errors and therefor shouldn't bubble up
if err != nil {
err = nil
}
if vm.Debug {
vm.StdErrFormat(vmenv.StructLogs())
}
self.refundGas()
self.state.AddBalance(self.env.Coinbase(), new(big.Int).Mul(self.gasUsed(), self.gasPrice))
return ret, self.gasUsed(), err
}
func (t *dialTask) Do(srv *Server) {
addr := &net.TCPAddr{IP: t.dest.IP, Port: int(t.dest.TCP)}
glog.V(logger.Debug).Infof("dialing %v\n", t.dest)
fd, err := srv.Dialer.Dial("tcp", addr.String())
if err != nil {
glog.V(logger.Detail).Infof("dial error: %v", err)
return
}
mfd := newMeteredConn(fd, false)
srv.setupConn(mfd, t.flags, t.dest)
}
func (self *StateTransition) transitionDb() (ret []byte, usedGas *big.Int, err error) {
if err = self.preCheck(); err != nil {
return
}
msg := self.msg
sender, _ := self.from() // err checked in preCheck
homestead := params.IsHomestead(self.env.BlockNumber())
contractCreation := MessageCreatesContract(msg)
// Pay intrinsic gas
if err = self.useGas(IntrinsicGas(self.data, contractCreation, homestead)); err != nil {
return nil, nil, InvalidTxError(err)
}
vmenv := self.env
//var addr common.Address
if contractCreation {
ret, _, err = vmenv.Create(sender, self.data, self.gas, self.gasPrice, self.value)
if homestead && err == vm.CodeStoreOutOfGasError {
self.gas = Big0
}
if err != nil {
ret = nil
glog.V(logger.Core).Infoln("VM create err:", err)
}
} else {
// Increment the nonce for the next transaction
self.state.SetNonce(sender.Address(), self.state.GetNonce(sender.Address())+1)
ret, err = vmenv.Call(sender, self.to().Address(), self.data, self.gas, self.gasPrice, self.value)
if err != nil {
glog.V(logger.Core).Infoln("VM call err:", err)
}
}
if err != nil && IsValueTransferErr(err) {
return nil, nil, InvalidTxError(err)
}
// We aren't interested in errors here. Errors returned by the VM are non-consensus errors and therefor shouldn't bubble up
if err != nil {
err = nil
}
if vm.Debug {
vm.StdErrFormat(vmenv.StructLogs())
}
self.refundGas()
self.state.AddBalance(self.env.Coinbase(), new(big.Int).Mul(self.gasUsed(), self.gasPrice))
return ret, self.gasUsed(), err
}
func (t *udp) handlePacket(from *net.UDPAddr, buf []byte) error {
packet, fromID, hash, err := decodePacket(buf)
if err != nil {
glog.V(logger.Debug).Infof("Bad packet from %v: %v\n", from, err)
return err
}
status := "ok"
if err = packet.handle(t, from, fromID, hash); err != nil {
status = err.Error()
}
glog.V(logger.Detail).Infof("<<< %v %T: %s\n", from, packet, status)
return err
}
