func (d *Downloader) getFromPeer(p *peer, hash common.Hash, ignoreInitial bool) (err error) {
d.activePeer = p.id
defer func() {
// reset on error
if err != nil {
d.queue.reset()
}
}()
glog.V(logger.Detail).Infoln("Synchronising with the network using:", p.id)
// Start the fetcher. This will block the update entirely
// interupts need to be send to the appropriate channels
// respectively.
if err = d.startFetchingHashes(p, hash, ignoreInitial); err != nil {
return err
}
// Start fetching blocks in paralel. The strategy is simple
// take any available peers, seserve a chunk for each peer available,
// let the peer deliver the chunkn and periodically check if a peer
// has timedout.
if err = d.startFetchingBlocks(p); err != nil {
return err
}
glog.V(logger.Detail).Infoln("Sync completed")
return nil
}
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
}
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()
}
// 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
}
// 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()
// short circuit when a received envelope has already expired
if envelope.Expiry < uint32(time.Now().Unix()) {
return nil
}
// 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
}
// 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)
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())
}
}
}
// listenLoop runs in its own goroutine and accepts
// inbound connections.
func (srv *Server) listenLoop() {
defer srv.loopWG.Done()
glog.V(logger.Info).Infoln("Listening on", srv.listener.Addr())
// This channel acts as a semaphore limiting
// active inbound connections that are lingering pre-handshake.
// If all slots are taken, no further connections are accepted.
tokens := maxAcceptConns
if srv.MaxPendingPeers > 0 {
tokens = srv.MaxPendingPeers
}
slots := make(chan struct{}, tokens)
for i := 0; i < tokens; i++ {
slots <- struct{}{}
}
for {
<-slots
fd, err := srv.listener.Accept()
if err != nil {
return
}
glog.V(logger.Debug).Infof("Accepted conn %v\n", fd.RemoteAddr())
go func() {
srv.setupConn(fd, inboundConn, nil)
slots <- struct{}{}
}()
}
}
// tries unlocking the specified account a few times.
func unlockAccount(ctx *cli.Context, accman *accounts.Manager, address string, i int, passwords []string) (accounts.Account, string) {
account, err := utils.MakeAddress(accman, address)
if err != nil {
utils.Fatalf("Could not list accounts: %v", err)
}
for trials := 0; trials < 3; trials++ {
prompt := fmt.Sprintf("Unlocking account %s | Attempt %d/%d", address, trials+1, 3)
password := getPassPhrase(prompt, false, i, passwords)
err = accman.Unlock(account, password)
if err == nil {
glog.V(logger.Info).Infof("Unlocked account %x", account.Address)
return account, password
}
if err, ok := err.(*accounts.AmbiguousAddrError); ok {
glog.V(logger.Info).Infof("Unlocked account %x", account.Address)
return ambiguousAddrRecovery(accman, err, password), password
}
if err != accounts.ErrDecrypt {
// No need to prompt again if the error is not decryption-related.
break
}
}
// All trials expended to unlock account, bail out
utils.Fatalf("Failed to unlock account %s (%v)", address, err)
return accounts.Account{}, ""
}
// main loop for adding connections via listening
func (srv *Server) listenLoop() {
defer srv.loopWG.Done()
// This channel acts as a semaphore limiting
// active inbound connections that are lingering pre-handshake.
// If all slots are taken, no further connections are accepted.
slots := make(chan struct{}, maxAcceptConns)
for i := 0; i < maxAcceptConns; i++ {
slots <- struct{}{}
}
glog.V(logger.Info).Infoln("Listening on", srv.listener.Addr())
for {
<-slots
conn, err := srv.listener.Accept()
if err != nil {
return
}
glog.V(logger.Debug).Infof("Accepted conn %v\n", conn.RemoteAddr())
srv.peerWG.Add(1)
go func() {
srv.startPeer(conn, nil)
slots <- struct{}{}
}()
}
}
func (p *Peer) run() DiscReason {
readErr := make(chan error, 1)
p.wg.Add(2)
go p.readLoop(readErr)
go p.pingLoop()
p.startProtocols()
// Wait for an error or disconnect.
var reason DiscReason
select {
case err := <-readErr:
if r, ok := err.(DiscReason); ok {
reason = r
} else {
// Note: We rely on protocols to abort if there is a write
// error. It might be more robust to handle them here as well.
glog.V(logger.Detail).Infof("%v: Read error: %v\n", p, err)
reason = DiscNetworkError
}
case err := <-p.protoErr:
reason = discReasonForError(err)
case reason = <-p.disc:
}
close(p.closed)
p.politeDisconnect(reason)
p.wg.Wait()
glog.V(logger.Debug).Infof("%v: Disconnected: %v\n", p, reason)
return reason
}
// 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)
}
}
}
func startIpc(cfg IpcConfig, codec codec.Codec, api shared.EthereumApi) error {
os.Remove(cfg.Endpoint) // in case it still exists from a previous run
l, err := net.ListenUnix("unix", &net.UnixAddr{Name: cfg.Endpoint, Net: "unix"})
if err != nil {
return err
}
os.Chmod(cfg.Endpoint, 0600)
go func() {
for {
conn, err := l.AcceptUnix()
if err != nil {
glog.V(logger.Error).Infof("Error accepting ipc connection - %v\n", err)
continue
}
go handle(conn, api, codec)
}
os.Remove(cfg.Endpoint)
}()
glog.V(logger.Info).Infof("IPC service started (%s)\n", cfg.Endpoint)
return nil
}
func (pm *ProtocolManager) synchronise(peer *peer) {
// Make sure the peer's TD is higher than our own. If not drop.
if peer.td.Cmp(pm.chainman.Td()) <= 0 {
return
}
// Check downloader if it's busy so it doesn't show the sync message
// for every attempty
if pm.downloader.IsBusy() {
return
}
// FIXME if we have the hash in our chain and the TD of the peer is
// much higher than ours, something is wrong with us or the peer.
// Check if the hash is on our own chain
if pm.chainman.HasBlock(peer.recentHash) {
return
}
// Get the hashes from the peer (synchronously)
err := pm.downloader.Synchronise(peer.id, peer.recentHash)
if err != nil && err == downloader.ErrBadPeer {
glog.V(logger.Debug).Infoln("removed peer from peer set due to bad action")
pm.removePeer(peer)
} else if err != nil {
// handle error
glog.V(logger.Detail).Infoln("error downloading:", err)
}
}
// handle is the callback invoked to manage the life cycle of an eth 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 Ethereum 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 (srv *Server) startPeer(fd net.Conn, dest *discover.Node) {
// TODO: handle/store session token
// Run setupFunc, which should create an authenticated connection
// and run the capability exchange. Note that any early error
// returns during that exchange need to call peerWG.Done because
// the callers of startPeer added the peer to the wait group already.
fd.SetDeadline(time.Now().Add(handshakeTimeout))
conn, err := srv.setupFunc(fd, srv.PrivateKey, srv.ourHandshake, dest, srv.keepconn)
if err != nil {
fd.Close()
glog.V(logger.Debug).Infof("Handshake with %v failed: %v", fd.RemoteAddr(), err)
srv.peerWG.Done()
return
}
conn.MsgReadWriter = &netWrapper{
wrapped: conn.MsgReadWriter,
conn: fd, rtimeout: frameReadTimeout, wtimeout: frameWriteTimeout,
}
p := newPeer(fd, conn, srv.Protocols)
if ok, reason := srv.addPeer(conn, p); !ok {
glog.V(logger.Detail).Infof("Not adding %v (%v)\n", p, reason)
p.politeDisconnect(reason)
srv.peerWG.Done()
return
}
// The handshakes are done and it passed all checks.
// Spawn the Peer loops.
go srv.runPeer(p)
}
func (self *LDBDatabase) Close() {
if err := self.Flush(); err != nil {
glog.V(logger.Error).Infof("error: flush '%s': %v\n", self.fn, err)
}
self.db.Close()
glog.V(logger.Error).Infoln("flushed and closed db:", self.fn)
}
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
}
// 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
}
// insert spawns a new goroutine to run a block insertion into the chain. If the
// block's number is at the same height as the current import phase, if updates
// the phase states accordingly.
func (f *Fetcher) insert(peer string, block *types.Block) {
hash := block.Hash()
// Run the import on a new thread
glog.V(logger.Debug).Infof("Peer %s: importing block #%d [%x]", peer, block.NumberU64(), hash[:4])
go func() {
defer func() { f.done <- hash }()
// If the parent's unknown, abort insertion
parent := f.getBlock(block.ParentHash())
if parent == nil {
return
}
// Quickly validate the header and propagate the block if it passes
if err := f.validateBlock(block, parent); err != nil {
glog.V(logger.Debug).Infof("Peer %s: block #%d [%x] verification failed: %v", peer, block.NumberU64(), hash[:4], err)
f.dropPeer(peer)
return
}
go f.broadcastBlock(block, true)
// Run the actual import and log any issues
if _, err := f.insertChain(types.Blocks{block}); err != nil {
glog.V(logger.Warn).Infof("Peer %s: block #%d [%x] import failed: %v", peer, block.NumberU64(), hash[:4], err)
return
}
// If import succeeded, broadcast the block
go f.broadcastBlock(block, false)
// Invoke the testing hook if needed
if f.importedHook != nil {
f.importedHook(block)
}
}()
}
func (pm *ProtocolManager) handle(p *peer) error {
// Execute the Ethereum handshake.
if err := p.handleStatus(); err != nil {
return err
}
// Register the peer locally.
glog.V(logger.Detail).Infoln("Adding peer", p.id)
if err := pm.peers.Register(p); err != nil {
glog.V(logger.Error).Infoln("Addition failed:", 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.Head(), p.requestHashes, 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 {
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()
}
// 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(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://" + 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 := 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
}
// 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.blockchain.GetBlock(block.ParentHash()); parent != nil {
td = new(big.Int).Add(block.Difficulty(), pm.blockchain.GetTd(block.ParentHash()))
} 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.blockchain.HasBlock(hash) {
for _, peer := range peers {
if peer.version < eth62 {
peer.SendNewBlockHashes61([]common.Hash{hash})
} else {
peer.SendNewBlockHashes([]common.Hash{hash}, []uint64{block.NumberU64()})
}
}
glog.V(logger.Detail).Infof("announced block %x to %d peers in %v", hash[:4], len(peers), time.Since(block.ReceivedAt))
}
}
// 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
}
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 (self *worker) wait() {
for {
for block := range self.recv {
atomic.AddInt32(&self.atWork, -1)
if block == nil {
continue
}
_, err := self.chain.WriteBlock(block, false)
if err != nil {
glog.V(logger.Error).Infoln("error writing block to chain", err)
continue
}
// check staleness and display confirmation
var stale, confirm string
canonBlock := self.chain.GetBlockByNumber(block.NumberU64())
if canonBlock != nil && canonBlock.Hash() != block.Hash() {
stale = "stale "
} else {
confirm = "Wait 5 blocks for confirmation"
self.current.localMinedBlocks = newLocalMinedBlock(block.Number().Uint64(), self.current.localMinedBlocks)
}
glog.V(logger.Info).Infof("🔨 Mined %sblock (#%v / %x). %s", stale, block.Number(), block.Hash().Bytes()[:4], confirm)
// broadcast before waiting for validation
go self.mux.Post(core.NewMinedBlockEvent{block})
self.commitNewWork()
}
}
}
// 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
}
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.Error).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)
}
func startIpc(cfg IpcConfig, codec codec.Codec, api shared.EthereumApi) error {
os.Remove(cfg.Endpoint) // in case it still exists from a previous run
l, err := net.Listen("unix", cfg.Endpoint)
if err != nil {
return err
}
l = fdtrack.WrapListener("ipc", l)
os.Chmod(cfg.Endpoint, 0600)
go func() {
for {
conn, err := l.Accept()
if err != nil {
glog.V(logger.Error).Infof("Error accepting ipc connection - %v\n", err)
continue
}
id := newIpcConnId()
glog.V(logger.Debug).Infof("New IPC connection with id %06d started\n", id)
go handle(id, conn, api, codec)
}
os.Remove(cfg.Endpoint)
}()
glog.V(logger.Info).Infof("IPC service started (%s)\n", cfg.Endpoint)
return nil
}
func (s *Ethereum) syncDatabases() {
ticker := time.NewTicker(1 * time.Minute)
done:
for {
select {
case <-ticker.C:
// don't change the order of database flushes
if err := s.extraDb.Flush(); err != nil {
glog.V(logger.Error).Infof("error: flush extraDb: %v\n", err)
}
if err := s.stateDb.Flush(); err != nil {
glog.V(logger.Error).Infof("error: flush stateDb: %v\n", err)
}
if err := s.blockDb.Flush(); err != nil {
glog.V(logger.Error).Infof("error: flush blockDb: %v\n", err)
}
case <-s.shutdownChan:
break done
}
}
s.blockDb.Close()
s.stateDb.Close()
s.extraDb.Close()
close(s.databasesClosed)
}