diff options
Diffstat (limited to 'eth')
37 files changed, 2976 insertions, 1683 deletions
@@ -29,13 +29,13 @@ import ( "time" "github.com/ava-labs/coreth/core" + "github.com/ava-labs/coreth/core/rawdb" + "github.com/ava-labs/coreth/core/state" + "github.com/ava-labs/coreth/core/types" "github.com/ava-labs/coreth/internal/ethapi" "github.com/ava-labs/coreth/rpc" "github.com/ava-labs/go-ethereum/common" "github.com/ava-labs/go-ethereum/common/hexutil" - "github.com/ava-labs/go-ethereum/core/rawdb" - "github.com/ava-labs/go-ethereum/core/state" - "github.com/ava-labs/go-ethereum/core/types" "github.com/ava-labs/go-ethereum/rlp" "github.com/ava-labs/go-ethereum/trie" ) diff --git a/eth/api_backend.go b/eth/api_backend.go index c4ec8f0..d4061f8 100644 --- a/eth/api_backend.go +++ b/eth/api_backend.go @@ -21,22 +21,21 @@ import ( "errors" "math/big" + "github.com/ava-labs/coreth/accounts" "github.com/ava-labs/coreth/core" + "github.com/ava-labs/coreth/core/rawdb" + "github.com/ava-labs/coreth/core/state" + "github.com/ava-labs/coreth/core/types" + "github.com/ava-labs/coreth/core/vm" "github.com/ava-labs/coreth/eth/gasprice" + "github.com/ava-labs/coreth/params" "github.com/ava-labs/coreth/rpc" - "github.com/ava-labs/go-ethereum/accounts" "github.com/ava-labs/go-ethereum/common" "github.com/ava-labs/go-ethereum/common/math" - ethcore "github.com/ava-labs/go-ethereum/core" "github.com/ava-labs/go-ethereum/core/bloombits" - "github.com/ava-labs/go-ethereum/core/rawdb" - "github.com/ava-labs/go-ethereum/core/state" - "github.com/ava-labs/go-ethereum/core/types" - "github.com/ava-labs/go-ethereum/core/vm" "github.com/ava-labs/go-ethereum/eth/downloader" "github.com/ava-labs/go-ethereum/ethdb" "github.com/ava-labs/go-ethereum/event" - "github.com/ava-labs/go-ethereum/params" ) // EthAPIBackend implements ethapi.Backend for full nodes @@ -60,7 +59,7 @@ func (b *EthAPIBackend) AcceptedBlock() *types.Block { } func (b *EthAPIBackend) SetHead(number uint64) { - b.eth.protocolManager.downloader.Cancel() + //b.eth.protocolManager.downloader.Cancel() b.eth.blockchain.SetHead(number) } @@ -142,7 +141,7 @@ func (b *EthAPIBackend) GetTd(blockHash common.Hash) *big.Int { return b.eth.blockchain.GetTdByHash(blockHash) } -func (b *EthAPIBackend) GetEVM(ctx context.Context, msg ethcore.Message, state *state.StateDB, header *types.Header) (*vm.EVM, func() error, error) { +func (b *EthAPIBackend) GetEVM(ctx context.Context, msg core.Message, state *state.StateDB, header *types.Header) (*vm.EVM, func() error, error) { state.SetBalance(msg.From(), math.MaxBig256) vmError := func() error { return nil } diff --git a/eth/api_tracer.go b/eth/api_tracer.go index b87a9fe..c8a5307 100644 --- a/eth/api_tracer.go +++ b/eth/api_tracer.go @@ -28,19 +28,18 @@ import ( "sync" "time" + "github.com/ava-labs/coreth/core" + "github.com/ava-labs/coreth/core/rawdb" + "github.com/ava-labs/coreth/core/state" + "github.com/ava-labs/coreth/core/types" + "github.com/ava-labs/coreth/core/vm" + "github.com/ava-labs/coreth/eth/tracers" "github.com/ava-labs/coreth/internal/ethapi" - myrpc "github.com/ava-labs/coreth/rpc" + "github.com/ava-labs/coreth/rpc" "github.com/ava-labs/go-ethereum/common" "github.com/ava-labs/go-ethereum/common/hexutil" - "github.com/ava-labs/go-ethereum/core" - "github.com/ava-labs/go-ethereum/core/rawdb" - "github.com/ava-labs/go-ethereum/core/state" - "github.com/ava-labs/go-ethereum/core/types" - "github.com/ava-labs/go-ethereum/core/vm" - "github.com/ava-labs/go-ethereum/eth/tracers" "github.com/ava-labs/go-ethereum/log" "github.com/ava-labs/go-ethereum/rlp" - "github.com/ava-labs/go-ethereum/rpc" "github.com/ava-labs/go-ethereum/trie" ) @@ -102,26 +101,26 @@ type txTraceTask struct { // TraceChain returns the structured logs created during the execution of EVM // between two blocks (excluding start) and returns them as a JSON object. -func (api *PrivateDebugAPI) TraceChain(ctx context.Context, start, end myrpc.BlockNumber, config *TraceConfig) (*rpc.Subscription, error) { +func (api *PrivateDebugAPI) TraceChain(ctx context.Context, start, end rpc.BlockNumber, config *TraceConfig) (*rpc.Subscription, error) { // Fetch the block interval that we want to trace var from, to *types.Block switch start { - case myrpc.PendingBlockNumber: + case rpc.PendingBlockNumber: from = api.eth.miner.PendingBlock() - case myrpc.LatestBlockNumber: + case rpc.LatestBlockNumber: from = api.eth.blockchain.CurrentBlock() - case myrpc.AcceptedBlockNumber: + case rpc.AcceptedBlockNumber: from = api.eth.AcceptedBlock() default: from = api.eth.blockchain.GetBlockByNumber(uint64(start)) } switch end { - case myrpc.PendingBlockNumber: + case rpc.PendingBlockNumber: to = api.eth.miner.PendingBlock() - case myrpc.LatestBlockNumber: + case rpc.LatestBlockNumber: to = api.eth.blockchain.CurrentBlock() - case myrpc.AcceptedBlockNumber: + case rpc.AcceptedBlockNumber: from = api.eth.AcceptedBlock() default: to = api.eth.blockchain.GetBlockByNumber(uint64(end)) @@ -357,16 +356,16 @@ func (api *PrivateDebugAPI) traceChain(ctx context.Context, start, end *types.Bl // TraceBlockByNumber returns the structured logs created during the execution of // EVM and returns them as a JSON object. -func (api *PrivateDebugAPI) TraceBlockByNumber(ctx context.Context, number myrpc.BlockNumber, config *TraceConfig) ([]*txTraceResult, error) { +func (api *PrivateDebugAPI) TraceBlockByNumber(ctx context.Context, number rpc.BlockNumber, config *TraceConfig) ([]*txTraceResult, error) { // Fetch the block that we want to trace var block *types.Block switch number { - case myrpc.PendingBlockNumber: + case rpc.PendingBlockNumber: block = api.eth.miner.PendingBlock() - case myrpc.LatestBlockNumber: + case rpc.LatestBlockNumber: block = api.eth.blockchain.CurrentBlock() - case myrpc.AcceptedBlockNumber: + case rpc.AcceptedBlockNumber: block = api.eth.AcceptedBlock() default: block = api.eth.blockchain.GetBlockByNumber(uint64(number)) diff --git a/eth/backend.go b/eth/backend.go index 6d052e2..773f48e 100644 --- a/eth/backend.go +++ b/eth/backend.go @@ -23,36 +23,34 @@ import ( "math/big" "runtime" "sync" - "sync/atomic" + //"sync/atomic" + "github.com/ava-labs/coreth/accounts" + "github.com/ava-labs/coreth/accounts/abi/bind" + "github.com/ava-labs/coreth/consensus" + "github.com/ava-labs/coreth/consensus/clique" "github.com/ava-labs/coreth/consensus/dummy" + "github.com/ava-labs/coreth/consensus/ethash" "github.com/ava-labs/coreth/core" + "github.com/ava-labs/coreth/core/rawdb" + "github.com/ava-labs/coreth/core/types" + "github.com/ava-labs/coreth/core/vm" "github.com/ava-labs/coreth/eth/filters" "github.com/ava-labs/coreth/eth/gasprice" "github.com/ava-labs/coreth/internal/ethapi" "github.com/ava-labs/coreth/miner" "github.com/ava-labs/coreth/node" - myparams "github.com/ava-labs/coreth/params" - "github.com/ava-labs/go-ethereum/accounts" - "github.com/ava-labs/go-ethereum/accounts/abi/bind" + "github.com/ava-labs/coreth/params" + "github.com/ava-labs/coreth/rpc" "github.com/ava-labs/go-ethereum/common" "github.com/ava-labs/go-ethereum/common/hexutil" - "github.com/ava-labs/go-ethereum/consensus" - "github.com/ava-labs/go-ethereum/consensus/clique" - "github.com/ava-labs/go-ethereum/consensus/ethash" "github.com/ava-labs/go-ethereum/core/bloombits" - "github.com/ava-labs/go-ethereum/core/rawdb" - "github.com/ava-labs/go-ethereum/core/types" - "github.com/ava-labs/go-ethereum/core/vm" "github.com/ava-labs/go-ethereum/eth/downloader" "github.com/ava-labs/go-ethereum/ethdb" "github.com/ava-labs/go-ethereum/event" "github.com/ava-labs/go-ethereum/log" "github.com/ava-labs/go-ethereum/p2p" - //"github.com/ava-labs/go-ethereum/p2p/enr" - "github.com/ava-labs/go-ethereum/params" "github.com/ava-labs/go-ethereum/rlp" - "github.com/ava-labs/go-ethereum/rpc" ) type LesServer interface { @@ -78,10 +76,10 @@ type Ethereum struct { server *p2p.Server // Handlers - txPool *core.TxPool - blockchain *core.BlockChain - protocolManager *ProtocolManager - lesServer LesServer + txPool *core.TxPool + blockchain *core.BlockChain + //protocolManager *ProtocolManager + lesServer LesServer // DB interfaces chainDb ethdb.Database // Block chain database @@ -253,8 +251,8 @@ func makeExtraData(extra []byte) []byte { runtime.GOOS, }) } - if uint64(len(extra)) > myparams.MaximumExtraDataSize { - log.Warn("Miner extra data exceed limit", "extra", hexutil.Bytes(extra), "limit", myparams.MaximumExtraDataSize) + if uint64(len(extra)) > params.MaximumExtraDataSize { + log.Warn("Miner extra data exceed limit", "extra", hexutil.Bytes(extra), "limit", params.MaximumExtraDataSize) extra = nil } return extra @@ -486,8 +484,8 @@ func (s *Ethereum) ChainDb() ethdb.Database { return s.chainDb } func (s *Ethereum) IsListening() bool { return true } // Always listening func (s *Ethereum) EthVersion() int { return int(ProtocolVersions[0]) } func (s *Ethereum) NetVersion() uint64 { return s.networkID } -func (s *Ethereum) Downloader() *downloader.Downloader { return s.protocolManager.downloader } -func (s *Ethereum) Synced() bool { return atomic.LoadUint32(&s.protocolManager.acceptTxs) == 1 } +func (s *Ethereum) Downloader() *downloader.Downloader { return nil } // s.protocolManager.downloader } +func (s *Ethereum) Synced() bool { return true } // atomic.LoadUint32(&s.protocolManager.acceptTxs) == 1 } func (s *Ethereum) ArchiveMode() bool { return s.config.NoPruning } // Protocols implements node.Service, returning all the currently configured diff --git a/eth/bloombits.go b/eth/bloombits.go index e4792bb..7136c29 100644 --- a/eth/bloombits.go +++ b/eth/bloombits.go @@ -21,11 +21,11 @@ import ( "time" "github.com/ava-labs/coreth/core" + "github.com/ava-labs/coreth/core/bloombits" + "github.com/ava-labs/coreth/core/rawdb" + "github.com/ava-labs/coreth/core/types" "github.com/ava-labs/go-ethereum/common" "github.com/ava-labs/go-ethereum/common/bitutil" - "github.com/ava-labs/go-ethereum/core/bloombits" - "github.com/ava-labs/go-ethereum/core/rawdb" - "github.com/ava-labs/go-ethereum/core/types" "github.com/ava-labs/go-ethereum/ethdb" ) diff --git a/eth/config.go b/eth/config.go index ee0fdb7..18dbd8e 100644 --- a/eth/config.go +++ b/eth/config.go @@ -25,14 +25,14 @@ import ( "runtime" "time" + "github.com/ava-labs/coreth/consensus/ethash" "github.com/ava-labs/coreth/core" "github.com/ava-labs/coreth/eth/gasprice" "github.com/ava-labs/coreth/miner" + "github.com/ava-labs/coreth/params" "github.com/ava-labs/go-ethereum/common" "github.com/ava-labs/go-ethereum/common/hexutil" - "github.com/ava-labs/go-ethereum/consensus/ethash" "github.com/ava-labs/go-ethereum/eth/downloader" - "github.com/ava-labs/go-ethereum/params" ) // DefaultConfig contains default settings for use on the Ethereum main net. diff --git a/eth/filters/api.go b/eth/filters/api.go index 9d9e757..a1d0b21 100644 --- a/eth/filters/api.go +++ b/eth/filters/api.go @@ -25,13 +25,13 @@ import ( "sync" "time" + "github.com/ava-labs/coreth/core/types" + "github.com/ava-labs/coreth/rpc" ethereum "github.com/ava-labs/go-ethereum" "github.com/ava-labs/go-ethereum/common" "github.com/ava-labs/go-ethereum/common/hexutil" - "github.com/ava-labs/go-ethereum/core/types" "github.com/ava-labs/go-ethereum/ethdb" "github.com/ava-labs/go-ethereum/event" - "github.com/ava-labs/go-ethereum/rpc" ) var ( diff --git a/eth/filters/filter.go b/eth/filters/filter.go index b25792c..6d4a74d 100644 --- a/eth/filters/filter.go +++ b/eth/filters/filter.go @@ -22,10 +22,10 @@ import ( "math/big" "github.com/ava-labs/coreth/core" + "github.com/ava-labs/coreth/core/types" "github.com/ava-labs/coreth/rpc" "github.com/ava-labs/go-ethereum/common" "github.com/ava-labs/go-ethereum/core/bloombits" - "github.com/ava-labs/go-ethereum/core/types" "github.com/ava-labs/go-ethereum/ethdb" "github.com/ava-labs/go-ethereum/event" ) diff --git a/eth/filters/filter_system.go b/eth/filters/filter_system.go index f8ee038..41427c7 100644 --- a/eth/filters/filter_system.go +++ b/eth/filters/filter_system.go @@ -26,14 +26,13 @@ import ( "time" "github.com/ava-labs/coreth/core" - myrpc "github.com/ava-labs/coreth/rpc" + "github.com/ava-labs/coreth/core/rawdb" + "github.com/ava-labs/coreth/core/types" + "github.com/ava-labs/coreth/rpc" ethereum "github.com/ava-labs/go-ethereum" "github.com/ava-labs/go-ethereum/common" - "github.com/ava-labs/go-ethereum/core/rawdb" - "github.com/ava-labs/go-ethereum/core/types" "github.com/ava-labs/go-ethereum/event" "github.com/ava-labs/go-ethereum/log" - "github.com/ava-labs/go-ethereum/rpc" ) // Type determines the kind of filter and is used to put the filter in to @@ -197,24 +196,24 @@ func (es *EventSystem) subscribe(sub *subscription) *Subscription { // given criteria to the given logs channel. Default value for the from and to // block is "latest". If the fromBlock > toBlock an error is returned. func (es *EventSystem) SubscribeLogs(crit ethereum.FilterQuery, logs chan []*types.Log) (*Subscription, error) { - var from, to myrpc.BlockNumber + var from, to rpc.BlockNumber if crit.FromBlock == nil { - from = myrpc.LatestBlockNumber + from = rpc.LatestBlockNumber } else { - from = myrpc.BlockNumber(crit.FromBlock.Int64()) + from = rpc.BlockNumber(crit.FromBlock.Int64()) } if crit.ToBlock == nil { - to = myrpc.LatestBlockNumber + to = rpc.LatestBlockNumber } else { - to = myrpc.BlockNumber(crit.ToBlock.Int64()) + to = rpc.BlockNumber(crit.ToBlock.Int64()) } // only interested in pending logs - if from == myrpc.PendingBlockNumber && to == myrpc.PendingBlockNumber { + if from == rpc.PendingBlockNumber && to == rpc.PendingBlockNumber { return es.subscribePendingLogs(crit, logs), nil } // only interested in new mined logs - if from == myrpc.LatestBlockNumber && to == myrpc.LatestBlockNumber { + if from == rpc.LatestBlockNumber && to == rpc.LatestBlockNumber { return es.subscribeLogs(crit, logs), nil } // only interested in mined logs within a specific block range @@ -222,11 +221,11 @@ func (es *EventSystem) SubscribeLogs(crit ethereum.FilterQuery, logs chan []*typ return es.subscribeLogs(crit, logs), nil } // interested in mined logs from a specific block number, new logs and pending logs - if from >= myrpc.LatestBlockNumber && to == myrpc.PendingBlockNumber { + if from >= rpc.LatestBlockNumber && to == rpc.PendingBlockNumber { return es.subscribeMinedPendingLogs(crit, logs), nil } // interested in logs from a specific block number to new mined blocks - if from >= 0 && to == myrpc.LatestBlockNumber { + if from >= 0 && to == rpc.LatestBlockNumber { return es.subscribeLogs(crit, logs), nil } return nil, fmt.Errorf("invalid from and to block combination: from > to") diff --git a/eth/gasprice/gasprice.go b/eth/gasprice/gasprice.go index 9b632c2..23e49a6 100644 --- a/eth/gasprice/gasprice.go +++ b/eth/gasprice/gasprice.go @@ -22,11 +22,11 @@ import ( "sort" "sync" + "github.com/ava-labs/coreth/core/types" "github.com/ava-labs/coreth/internal/ethapi" "github.com/ava-labs/coreth/params" "github.com/ava-labs/coreth/rpc" "github.com/ava-labs/go-ethereum/common" - "github.com/ava-labs/go-ethereum/core/types" ) var maxPrice = big.NewInt(500 * params.GWei) diff --git a/eth/gen_config.go b/eth/gen_config.go index 6b8ddf1..d34f0b3 100644 --- a/eth/gen_config.go +++ b/eth/gen_config.go @@ -6,13 +6,13 @@ import ( "math/big" "time" + "github.com/ava-labs/coreth/consensus/ethash" "github.com/ava-labs/coreth/core" "github.com/ava-labs/coreth/eth/gasprice" "github.com/ava-labs/coreth/miner" + "github.com/ava-labs/coreth/params" "github.com/ava-labs/go-ethereum/common" - "github.com/ava-labs/go-ethereum/consensus/ethash" "github.com/ava-labs/go-ethereum/eth/downloader" - "github.com/ava-labs/go-ethereum/params" ) // MarshalTOML marshals as TOML. @@ -49,6 +49,8 @@ func (c Config) MarshalTOML() (interface{}, error) { RPCGasCap *big.Int `toml:",omitempty"` Checkpoint *params.TrustedCheckpoint `toml:",omitempty"` CheckpointOracle *params.CheckpointOracleConfig `toml:",omitempty"` + OverrideIstanbul *big.Int + ManualCanonical bool } var enc Config enc.Genesis = c.Genesis @@ -82,6 +84,8 @@ func (c Config) MarshalTOML() (interface{}, error) { enc.RPCGasCap = c.RPCGasCap enc.Checkpoint = c.Checkpoint enc.CheckpointOracle = c.CheckpointOracle + enc.OverrideIstanbul = c.OverrideIstanbul + enc.ManualCanonical = c.ManualCanonical return &enc, nil } @@ -119,6 +123,8 @@ func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error { RPCGasCap *big.Int `toml:",omitempty"` Checkpoint *params.TrustedCheckpoint `toml:",omitempty"` CheckpointOracle *params.CheckpointOracleConfig `toml:",omitempty"` + OverrideIstanbul *big.Int + ManualCanonical *bool } var dec Config if err := unmarshal(&dec); err != nil { @@ -217,5 +223,11 @@ func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error { if dec.CheckpointOracle != nil { c.CheckpointOracle = dec.CheckpointOracle } + if dec.OverrideIstanbul != nil { + c.OverrideIstanbul = dec.OverrideIstanbul + } + if dec.ManualCanonical != nil { + c.ManualCanonical = *dec.ManualCanonical + } return nil } diff --git a/eth/handler.go b/eth/handler.go deleted file mode 100644 index f502973..0000000 --- a/eth/handler.go +++ /dev/null @@ -1,844 +0,0 @@ -// Copyright 2015 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. - -package eth - -import ( - "encoding/json" - "errors" - "fmt" - "math" - "math/big" - "sync" - "sync/atomic" - "time" - - "github.com/ava-labs/coreth/core" - "github.com/ava-labs/go-ethereum/common" - "github.com/ava-labs/go-ethereum/consensus" - "github.com/ava-labs/go-ethereum/core/types" - "github.com/ava-labs/go-ethereum/eth/downloader" - "github.com/ava-labs/go-ethereum/eth/fetcher" - "github.com/ava-labs/go-ethereum/ethdb" - "github.com/ava-labs/go-ethereum/event" - "github.com/ava-labs/go-ethereum/log" - "github.com/ava-labs/go-ethereum/p2p" - "github.com/ava-labs/go-ethereum/p2p/enode" - "github.com/ava-labs/go-ethereum/params" - "github.com/ava-labs/go-ethereum/rlp" - "github.com/ava-labs/go-ethereum/trie" -) - -const ( - softResponseLimit = 2 * 1024 * 1024 // Target maximum size of returned blocks, headers or node data. - estHeaderRlpSize = 500 // Approximate size of an RLP encoded block header - - // txChanSize is the size of channel listening to NewTxsEvent. - // The number is referenced from the size of tx pool. - txChanSize = 4096 - - // minimim number of peers to broadcast new blocks to - minBroadcastPeers = 4 -) - -var ( - syncChallengeTimeout = 15 * time.Second // Time allowance for a node to reply to the sync progress challenge -) - -func errResp(code errCode, format string, v ...interface{}) error { - return fmt.Errorf("%v - %v", code, fmt.Sprintf(format, v...)) -} - -type ProtocolManager struct { - networkID uint64 - - fastSync uint32 // Flag whether fast sync is enabled (gets disabled if we already have blocks) - acceptTxs uint32 // Flag whether we're considered synchronised (enables transaction processing) - - checkpointNumber uint64 // Block number for the sync progress validator to cross reference - checkpointHash common.Hash // Block hash for the sync progress validator to cross reference - - txpool txPool - blockchain *core.BlockChain - maxPeers int - - downloader *downloader.Downloader - fetcher *fetcher.Fetcher - peers *peerSet - - eventMux *event.TypeMux - txsCh chan core.NewTxsEvent - txsSub event.Subscription - minedBlockSub *event.TypeMuxSubscription - - whitelist map[uint64]common.Hash - - // channels for fetcher, syncer, txsyncLoop - newPeerCh chan *peer - txsyncCh chan *txsync - quitSync chan struct{} - noMorePeers chan struct{} - - // wait group is used for graceful shutdowns during downloading - // and processing - wg sync.WaitGroup -} - -// NewProtocolManager returns a new Ethereum sub protocol manager. The Ethereum sub protocol manages peers capable -// with the Ethereum network. -func NewProtocolManager(config *params.ChainConfig, checkpoint *params.TrustedCheckpoint, mode downloader.SyncMode, networkID uint64, mux *event.TypeMux, txpool txPool, engine consensus.Engine, blockchain *core.BlockChain, chaindb ethdb.Database, cacheLimit int, whitelist map[uint64]common.Hash) (*ProtocolManager, error) { - // Create the protocol manager with the base fields - manager := &ProtocolManager{ - networkID: networkID, - eventMux: mux, - txpool: txpool, - blockchain: blockchain, - peers: newPeerSet(), - whitelist: whitelist, - newPeerCh: make(chan *peer), - noMorePeers: make(chan struct{}), - txsyncCh: make(chan *txsync), - quitSync: make(chan struct{}), - } - if mode == downloader.FullSync { - // The database seems empty as the current block is the genesis. Yet the fast - // block is ahead, so fast sync was enabled for this node at a certain point. - // The scenarios where this can happen is - // * if the user manually (or via a bad block) rolled back a fast sync node - // below the sync point. - // * the last fast sync is not finished while user specifies a full sync this - // time. But we don't have any recent state for full sync. - // In these cases however it's safe to reenable fast sync. - fullBlock, fastBlock := blockchain.CurrentBlock(), blockchain.CurrentFastBlock() - if fullBlock.NumberU64() == 0 && fastBlock.NumberU64() > 0 { - manager.fastSync = uint32(1) - log.Warn("Switch sync mode from full sync to fast sync") - } - } else { - if blockchain.CurrentBlock().NumberU64() > 0 { - // Print warning log if database is not empty to run fast sync. - log.Warn("Switch sync mode from fast sync to full sync") - } else { - // If fast sync was requested and our database is empty, grant it - manager.fastSync = uint32(1) - } - } - // If we have trusted checkpoints, enforce them on the chain - if checkpoint != nil { - manager.checkpointNumber = (checkpoint.SectionIndex+1)*params.CHTFrequency - 1 - manager.checkpointHash = checkpoint.SectionHead - } - - // Construct the downloader (long sync) and its backing state bloom if fast - // sync is requested. The downloader is responsible for deallocating the state - // bloom when it's done. - var stateBloom *trie.SyncBloom - if atomic.LoadUint32(&manager.fastSync) == 1 { - stateBloom = trie.NewSyncBloom(uint64(cacheLimit), chaindb) - } - manager.downloader = downloader.New(manager.checkpointNumber, chaindb, stateBloom, manager.eventMux, blockchain, nil, manager.removePeer) - - // Construct the fetcher (short sync) - validator := func(header *types.Header) error { - return engine.VerifyHeader(blockchain, header, true) - } - heighter := func() uint64 { - return blockchain.CurrentBlock().NumberU64() - } - inserter := func(blocks types.Blocks) (int, error) { - // If sync hasn't reached the checkpoint yet, deny importing weird blocks. - // - // Ideally we would also compare the head block's timestamp and similarly reject - // the propagated block if the head is too old. Unfortunately there is a corner - // case when starting new networks, where the genesis might be ancient (0 unix) - // which would prevent full nodes from accepting it. - if manager.blockchain.CurrentBlock().NumberU64() < manager.checkpointNumber { - log.Warn("Unsynced yet, discarded propagated block", "number", blocks[0].Number(), "hash", blocks[0].Hash()) - return 0, nil - } - // If fast sync is running, deny importing weird blocks. This is a problematic - // clause when starting up a new network, because fast-syncing miners might not - // accept each others' blocks until a restart. Unfortunately we haven't figured - // out a way yet where nodes can decide unilaterally whether the network is new - // or not. This should be fixed if we figure out a solution. - if atomic.LoadUint32(&manager.fastSync) == 1 { - log.Warn("Fast syncing, discarded propagated block", "number", blocks[0].Number(), "hash", blocks[0].Hash()) - return 0, nil - } - n, err := manager.blockchain.InsertChain(blocks) - if err == nil { - atomic.StoreUint32(&manager.acceptTxs, 1) // Mark initial sync done on any fetcher import - } - return n, err - } - manager.fetcher = fetcher.New(blockchain.GetBlockByHash, validator, manager.BroadcastBlock, heighter, inserter, manager.removePeer) - - return manager, nil -} - -func (pm *ProtocolManager) makeProtocol(version uint) p2p.Protocol { - length, ok := protocolLengths[version] - if !ok { - panic("makeProtocol for unknown version") - } - - return p2p.Protocol{ - Name: protocolName, - Version: version, - Length: length, - Run: func(p *p2p.Peer, rw p2p.MsgReadWriter) error { - peer := pm.newPeer(int(version), p, rw) - select { - case pm.newPeerCh <- peer: - pm.wg.Add(1) - defer pm.wg.Done() - return pm.handle(peer) - case <-pm.quitSync: - return p2p.DiscQuitting - } - }, - NodeInfo: func() interface{} { - return pm.NodeInfo() - }, - PeerInfo: func(id enode.ID) interface{} { - if p := pm.peers.Peer(fmt.Sprintf("%x", id[:8])); p != nil { - return p.Info() - } - return nil - }, - } -} - -func (pm *ProtocolManager) removePeer(id string) { - // Short circuit if the peer was already removed - peer := pm.peers.Peer(id) - if peer == nil { - return - } - log.Debug("Removing Ethereum peer", "peer", id) - - // Unregister the peer from the downloader and Ethereum peer set - pm.downloader.UnregisterPeer(id) - if err := pm.peers.Unregister(id); err != nil { - log.Error("Peer removal failed", "peer", id, "err", err) - } - // Hard disconnect at the networking layer - if peer != nil { - peer.Peer.Disconnect(p2p.DiscUselessPeer) - } -} - -func (pm *ProtocolManager) Start(maxPeers int) { - pm.maxPeers = maxPeers - - // broadcast transactions - pm.txsCh = make(chan core.NewTxsEvent, txChanSize) - pm.txsSub = pm.txpool.SubscribeNewTxsEvent(pm.txsCh) - go pm.txBroadcastLoop() - - // broadcast mined blocks - pm.minedBlockSub = pm.eventMux.Subscribe(core.NewMinedBlockEvent{}) - go pm.minedBroadcastLoop() - - // start sync handlers - go pm.syncer() - go pm.txsyncLoop() -} - -func (pm *ProtocolManager) Stop() { - log.Info("Stopping Ethereum protocol") - - pm.txsSub.Unsubscribe() // quits txBroadcastLoop - pm.minedBlockSub.Unsubscribe() // quits blockBroadcastLoop - - // Quit the sync loop. - // After this send has completed, no new peers will be accepted. - pm.noMorePeers <- struct{}{} - - // Quit fetcher, txsyncLoop. - close(pm.quitSync) - - // Disconnect existing sessions. - // This also closes the gate for any new registrations on the peer set. - // sessions which are already established but not added to pm.peers yet - // will exit when they try to register. - pm.peers.Close() - - // Wait for all peer handler goroutines and the loops to come down. - pm.wg.Wait() - - log.Info("Ethereum protocol stopped") -} - -func (pm *ProtocolManager) newPeer(pv int, p *p2p.Peer, rw p2p.MsgReadWriter) *peer { - return newPeer(pv, p, newMeteredMsgWriter(rw)) -} - -// 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 { - // Ignore maxPeers if this is a trusted peer - if pm.peers.Len() >= pm.maxPeers && !p.Peer.Info().Network.Trusted { - return p2p.DiscTooManyPeers - } - p.Log().Debug("Ethereum peer connected", "name", p.Name()) - - // Execute the Ethereum handshake - var ( - genesis = pm.blockchain.Genesis() - head = pm.blockchain.CurrentHeader() - hash = head.Hash() - number = head.Number.Uint64() - td = pm.blockchain.GetTd(hash, number) - ) - if err := p.Handshake(pm.networkID, td, hash, genesis.Hash()); err != nil { - p.Log().Debug("Ethereum handshake failed", "err", err) - return err - } - if rw, ok := p.rw.(*meteredMsgReadWriter); ok { - rw.Init(p.version) - } - // Register the peer locally - if err := pm.peers.Register(p); err != nil { - p.Log().Error("Ethereum peer registration failed", "err", 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); err != nil { - return err - } - // Propagate existing transactions. new transactions appearing - // after this will be sent via broadcasts. - pm.syncTransactions(p) - - // If we have a trusted CHT, reject all peers below that (avoid fast sync eclipse) - if pm.checkpointHash != (common.Hash{}) { - // Request the peer's checkpoint header for chain height/weight validation - if err := p.RequestHeadersByNumber(pm.checkpointNumber, 1, 0, false); err != nil { - return err - } - // Start a timer to disconnect if the peer doesn't reply in time - p.syncDrop = time.AfterFunc(syncChallengeTimeout, func() { - p.Log().Warn("Checkpoint challenge timed out, dropping", "addr", p.RemoteAddr(), "type", p.Name()) - pm.removePeer(p.id) - }) - // Make sure it's cleaned up if the peer dies off - defer func() { - if p.syncDrop != nil { - p.syncDrop.Stop() - p.syncDrop = nil - } - }() - } - // If we have any explicit whitelist block hashes, request them - for number := range pm.whitelist { - if err := p.RequestHeadersByNumber(number, 1, 0, false); err != nil { - return err - } - } - // Handle incoming messages until the connection is torn down - for { - if err := pm.handleMsg(p); err != nil { - p.Log().Debug("Ethereum message handling failed", "err", err) - return err - } - } -} - -// handleMsg is invoked whenever an inbound message is received from a remote -// peer. The remote connection is torn down upon returning any error. -func (pm *ProtocolManager) handleMsg(p *peer) error { - // Read the next message from the remote peer, and ensure it's fully consumed - msg, err := p.rw.ReadMsg() - if err != nil { - return err - } - if msg.Size > protocolMaxMsgSize { - return errResp(ErrMsgTooLarge, "%v > %v", msg.Size, protocolMaxMsgSize) - } - defer msg.Discard() - - // Handle the message depending on its contents - switch { - case msg.Code == StatusMsg: - // Status messages should never arrive after the handshake - return errResp(ErrExtraStatusMsg, "uncontrolled status message") - - // Block header query, collect the requested headers and reply - case msg.Code == GetBlockHeadersMsg: - // Decode the complex header query - var query getBlockHeadersData - if err := msg.Decode(&query); err != nil { - return errResp(ErrDecode, "%v: %v", msg, err) - } - hashMode := query.Origin.Hash != (common.Hash{}) - first := true - maxNonCanonical := uint64(100) - - // Gather headers until the fetch or network limits is reached - var ( - bytes common.StorageSize - headers []*types.Header - unknown bool - ) - for !unknown && len(headers) < int(query.Amount) && bytes < softResponseLimit && len(headers) < downloader.MaxHeaderFetch { - // Retrieve the next header satisfying the query - var origin *types.Header - if hashMode { - if first { - first = false - origin = pm.blockchain.GetHeaderByHash(query.Origin.Hash) - if origin != nil { - query.Origin.Number = origin.Number.Uint64() - } - } else { - origin = pm.blockchain.GetHeader(query.Origin.Hash, query.Origin.Number) - } - } else { - origin = pm.blockchain.GetHeaderByNumber(query.Origin.Number) - } - if origin == nil { - break - } - headers = append(headers, origin) - bytes += estHeaderRlpSize - - // Advance to the next header of the query - switch { - case hashMode && query.Reverse: - // Hash based traversal towards the genesis block - ancestor := query.Skip + 1 - if ancestor == 0 { - unknown = true - } else { - query.Origin.Hash, query.Origin.Number = pm.blockchain.GetAncestor(query.Origin.Hash, query.Origin.Number, ancestor, &maxNonCanonical) - unknown = (query.Origin.Hash == common.Hash{}) - } - case hashMode && !query.Reverse: - // Hash based traversal towards the leaf block - var ( - current = origin.Number.Uint64() - next = current + query.Skip + 1 - ) - if next <= current { - infos, _ := json.MarshalIndent(p.Peer.Info(), "", " ") - p.Log().Warn("GetBlockHeaders skip overflow attack", "current", current, "skip", query.Skip, "next", next, "attacker", infos) - unknown = true - } else { - if header := pm.blockchain.GetHeaderByNumber(next); header != nil { - nextHash := header.Hash() - expOldHash, _ := pm.blockchain.GetAncestor(nextHash, next, query.Skip+1, &maxNonCanonical) - if expOldHash == query.Origin.Hash { - query.Origin.Hash, query.Origin.Number = nextHash, next - } else { - unknown = true - } - } else { - unknown = true - } - } - case query.Reverse: - // Number based traversal towards the genesis block - if query.Origin.Number >= query.Skip+1 { - query.Origin.Number -= query.Skip + 1 - } else { - unknown = true - } - - case !query.Reverse: - // Number based traversal towards the leaf block - query.Origin.Number += query.Skip + 1 - } - } - return p.SendBlockHeaders(headers) - - case msg.Code == BlockHeadersMsg: - // A batch of headers arrived to one of our previous requests - var headers []*types.Header - if err := msg.Decode(&headers); err != nil { - return errResp(ErrDecode, "msg %v: %v", msg, err) - } - // If no headers were received, but we're expencting a checkpoint header, consider it that - if len(headers) == 0 && p.syncDrop != nil { - // Stop the timer either way, decide later to drop or not - p.syncDrop.Stop() - p.syncDrop = nil - - // If we're doing a fast sync, we must enforce the checkpoint block to avoid - // eclipse attacks. Unsynced nodes are welcome to connect after we're done - // joining the network - if atomic.LoadUint32(&pm.fastSync) == 1 { - p.Log().Warn("Dropping unsynced node during fast sync", "addr", p.RemoteAddr(), "type", p.Name()) - return errors.New("unsynced node cannot serve fast sync") - } - } - // Filter out any explicitly requested headers, deliver the rest to the downloader - filter := len(headers) == 1 - if filter { - // If it's a potential sync progress check, validate the content and advertised chain weight - if p.syncDrop != nil && headers[0].Number.Uint64() == pm.checkpointNumber { - // Disable the sync drop timer - p.syncDrop.Stop() - p.syncDrop = nil - - // Validate the header and either drop the peer or continue - if headers[0].Hash() != pm.checkpointHash { - return errors.New("checkpoint hash mismatch") - } - return nil - } - // Otherwise if it's a whitelisted block, validate against the set - if want, ok := pm.whitelist[headers[0].Number.Uint64()]; ok { - if hash := headers[0].Hash(); want != hash { - p.Log().Info("Whitelist mismatch, dropping peer", "number", headers[0].Number.Uint64(), "hash", hash, "want", want) - return errors.New("whitelist block mismatch") - } - p.Log().Debug("Whitelist block verified", "number", headers[0].Number.Uint64(), "hash", want) - } - // Irrelevant of the fork checks, send the header to the fetcher just in case - headers = pm.fetcher.FilterHeaders(p.id, headers, time.Now()) - } - if len(headers) > 0 || !filter { - err := pm.downloader.DeliverHeaders(p.id, headers) - if err != nil { - log.Debug("Failed to deliver headers", "err", err) - } - } - - case msg.Code == GetBlockBodiesMsg: - // Decode the retrieval message - msgStream := rlp.NewStream(msg.Payload, uint64(msg.Size)) - if _, err := msgStream.List(); err != nil { - return err - } - // Gather blocks until the fetch or network limits is reached - var ( - hash common.Hash - bytes int - bodies []rlp.RawValue - ) - for bytes < softResponseLimit && len(bodies) < downloader.MaxBlockFetch { - // Retrieve the hash of the next block - if err := msgStream.Decode(&hash); err == rlp.EOL { - break - } else if err != nil { - return errResp(ErrDecode, "msg %v: %v", msg, err) - } - // Retrieve the requested block body, stopping if enough was found - if data := pm.blockchain.GetBodyRLP(hash); len(data) != 0 { - bodies = append(bodies, data) - bytes += len(data) - } - } - return p.SendBlockBodiesRLP(bodies) - - case msg.Code == BlockBodiesMsg: - // A batch of block bodies arrived to one of our previous requests - var request blockBodiesData - if err := msg.Decode(&request); err != nil { - return errResp(ErrDecode, "msg %v: %v", msg, err) - } - // Deliver them all to the downloader for queuing - transactions := make([][]*types.Transaction, len(request)) - uncles := make([][]*types.Header, len(request)) - - for i, body := range request { - transactions[i] = body.Transactions - uncles[i] = body.Uncles - } - // Filter out any explicitly requested bodies, deliver the rest to the downloader - filter := len(transactions) > 0 || len(uncles) > 0 - if filter { - transactions, uncles = pm.fetcher.FilterBodies(p.id, transactions, uncles, time.Now()) - } - if len(transactions) > 0 || len(uncles) > 0 || !filter { - err := pm.downloader.DeliverBodies(p.id, transactions, uncles) - if err != nil { - log.Debug("Failed to deliver bodies", "err", err) - } - } - - case p.version >= eth63 && msg.Code == GetNodeDataMsg: - // Decode the retrieval message - msgStream := rlp.NewStream(msg.Payload, uint64(msg.Size)) - if _, err := msgStream.List(); err != nil { - return err - } - // Gather state data until the fetch or network limits is reached - var ( - hash common.Hash - bytes int - data [][]byte - ) - for bytes < softResponseLimit && len(data) < downloader.MaxStateFetch { - // Retrieve the hash of the next state entry - if err := msgStream.Decode(&hash); err == rlp.EOL { - break - } else if err != nil { - return errResp(ErrDecode, "msg %v: %v", msg, err) - } - // Retrieve the requested state entry, stopping if enough was found - if entry, err := pm.blockchain.TrieNode(hash); err == nil { - data = append(data, entry) - bytes += len(entry) - } - } - return p.SendNodeData(data) - - case p.version >= eth63 && msg.Code == NodeDataMsg: - // A batch of node state data arrived to one of our previous requests - var data [][]byte - if err := msg.Decode(&data); err != nil { - return errResp(ErrDecode, "msg %v: %v", msg, err) - } - // Deliver all to the downloader - if err := pm.downloader.DeliverNodeData(p.id, data); err != nil { - log.Debug("Failed to deliver node state data", "err", err) - } - - case p.version >= eth63 && msg.Code == GetReceiptsMsg: - // Decode the retrieval message - msgStream := rlp.NewStream(msg.Payload, uint64(msg.Size)) - if _, err := msgStream.List(); err != nil { - return err - } - // Gather state data until the fetch or network limits is reached - var ( - hash common.Hash - bytes int - receipts []rlp.RawValue - ) - for bytes < softResponseLimit && len(receipts) < downloader.MaxReceiptFetch { - // Retrieve the hash of the next block - if err := msgStream.Decode(&hash); err == rlp.EOL { - break - } else if err != nil { - return errResp(ErrDecode, "msg %v: %v", msg, err) - } - // Retrieve the requested block's receipts, skipping if unknown to us - results := pm.blockchain.GetReceiptsByHash(hash) - if results == nil { - if header := pm.blockchain.GetHeaderByHash(hash); header == nil || header.ReceiptHash != types.EmptyRootHash { - continue - } - } - // If known, encode and queue for response packet - if encoded, err := rlp.EncodeToBytes(results); err != nil { - log.Error("Failed to encode receipt", "err", err) - } else { - receipts = append(receipts, encoded) - bytes += len(encoded) - } - } - return p.SendReceiptsRLP(receipts) - - case p.version >= eth63 && msg.Code == ReceiptsMsg: - // A batch of receipts arrived to one of our previous requests - var receipts [][]*types.Receipt - if err := msg.Decode(&receipts); err != nil { - return errResp(ErrDecode, "msg %v: %v", msg, err) - } - // Deliver all to the downloader - if err := pm.downloader.DeliverReceipts(p.id, receipts); err != nil { - log.Debug("Failed to deliver receipts", "err", err) - } - - case msg.Code == NewBlockHashesMsg: - var announces newBlockHashesData - if err := msg.Decode(&announces); err != nil { - return errResp(ErrDecode, "%v: %v", msg, err) - } - // Mark the hashes as present at the remote node - for _, block := range announces { - p.MarkBlock(block.Hash) - } - // Schedule all the unknown hashes for retrieval - unknown := make(newBlockHashesData, 0, len(announces)) - for _, block := range announces { - if !pm.blockchain.HasBlock(block.Hash, block.Number) { - unknown = append(unknown, block) - } - } - for _, block := range unknown { - pm.fetcher.Notify(p.id, block.Hash, block.Number, time.Now(), p.RequestOneHeader, p.RequestBodies) - } - - case msg.Code == NewBlockMsg: - // Retrieve and decode the propagated block - var request newBlockData - if err := msg.Decode(&request); err != nil { - return errResp(ErrDecode, "%v: %v", msg, err) - } - if err := request.sanityCheck(); err != nil { - return err - } - request.Block.ReceivedAt = msg.ReceivedAt - request.Block.ReceivedFrom = p - - // Mark the peer as owning the block and schedule it for import - p.MarkBlock(request.Block.Hash()) - pm.fetcher.Enqueue(p.id, request.Block) - - // Assuming the block is importable by the peer, but possibly not yet done so, - // calculate the head hash and TD that the peer truly must have. - var ( - trueHead = request.Block.ParentHash() - trueTD = new(big.Int).Sub(request.TD, request.Block.Difficulty()) - ) - // Update the peer's total difficulty if better than the previous - if _, td := p.Head(); trueTD.Cmp(td) > 0 { - p.SetHead(trueHead, trueTD) - - // Schedule a sync if above ours. Note, this will not fire a sync for a gap of - // a single block (as the true TD is below the propagated block), however this - // scenario should easily be covered by the fetcher. - currentBlock := pm.blockchain.CurrentBlock() - if trueTD.Cmp(pm.blockchain.GetTd(currentBlock.Hash(), currentBlock.NumberU64())) > 0 { - go pm.synchronise(p) - } - } - - case msg.Code == TxMsg: - // Transactions arrived, make sure we have a valid and fresh chain to handle them - if atomic.LoadUint32(&pm.acceptTxs) == 0 { - break - } - // Transactions can be processed, parse all of them and deliver to the pool - var txs []*types.Transaction - if err := msg.Decode(&txs); err != nil { - return errResp(ErrDecode, "msg %v: %v", msg, err) - } - for i, tx := range txs { - // Validate and mark the remote transaction - if tx == nil { - return errResp(ErrDecode, "transaction %d is nil", i) - } - p.MarkTransaction(tx.Hash()) - } - pm.txpool.AddRemotes(txs) - - default: - return errResp(ErrInvalidMsgCode, "%v", msg.Code) - } - return nil -} - -// 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(), block.NumberU64()-1); parent != nil { - td = new(big.Int).Add(block.Difficulty(), pm.blockchain.GetTd(block.ParentHash(), block.NumberU64()-1)) - } else { - log.Error("Propagating dangling block", "number", block.Number(), "hash", hash) - return - } - // Send the block to a subset of our peers - transferLen := int(math.Sqrt(float64(len(peers)))) - if transferLen < minBroadcastPeers { - transferLen = minBroadcastPeers - } - if transferLen > len(peers) { - transferLen = len(peers) - } - transfer := peers[:transferLen] - for _, peer := range transfer { - peer.AsyncSendNewBlock(block, td) - } - log.Trace("Propagated block", "hash", hash, "recipients", len(transfer), "duration", common.PrettyDuration(time.Since(block.ReceivedAt))) - return - } - // Otherwise if the block is indeed in out own chain, announce it - if pm.blockchain.HasBlock(hash, block.NumberU64()) { - for _, peer := range peers { - peer.AsyncSendNewBlockHash(block) - } - log.Trace("Announced block", "hash", hash, "recipients", len(peers), "duration", common.PrettyDuration(time.Since(block.ReceivedAt))) - } -} - -// BroadcastTxs will propagate a batch of transactions to all peers which are not known to -// already have the given transaction. -func (pm *ProtocolManager) BroadcastTxs(txs types.Transactions) { - var txset = make(map[*peer]types.Transactions) - - // Broadcast transactions to a batch of peers not knowing about it - for _, tx := range txs { - peers := pm.peers.PeersWithoutTx(tx.Hash()) - for _, peer := range peers { - txset[peer] = append(txset[peer], tx) - } - log.Trace("Broadcast transaction", "hash", tx.Hash(), "recipients", len(peers)) - } - // FIXME include this again: peers = peers[:int(math.Sqrt(float64(len(peers))))] - for peer, txs := range txset { - peer.AsyncSendTransactions(txs) - } -} - -// Mined broadcast loop -func (pm *ProtocolManager) minedBroadcastLoop() { - // automatically stops if unsubscribe - for obj := range pm.minedBlockSub.Chan() { - if ev, ok := obj.Data.(core.NewMinedBlockEvent); ok { - pm.BroadcastBlock(ev.Block, true) // First propagate block to peers - pm.BroadcastBlock(ev.Block, false) // Only then announce to the rest - } - } -} - -func (pm *ProtocolManager) txBroadcastLoop() { - for { - select { - case event := <-pm.txsCh: - pm.BroadcastTxs(event.Txs) - - // Err() channel will be closed when unsubscribing. - case <-pm.txsSub.Err(): - return - } - } -} - -// NodeInfo represents a short summary of the Ethereum sub-protocol metadata -// known about the host peer. -type NodeInfo struct { - Network uint64 `json:"network"` // Ethereum network ID (1=Frontier, 2=Morden, Ropsten=3, Rinkeby=4) - Difficulty *big.Int `json:"difficulty"` // Total difficulty of the host's blockchain - Genesis common.Hash `json:"genesis"` // SHA3 hash of the host's genesis block - Config *params.ChainConfig `json:"config"` // Chain configuration for the fork rules - Head common.Hash `json:"head"` // SHA3 hash of the host's best owned block -} - -// NodeInfo retrieves some protocol metadata about the running host node. -func (pm *ProtocolManager) NodeInfo() *NodeInfo { - currentBlock := pm.blockchain.CurrentBlock() - return &NodeInfo{ - Network: pm.networkID, - Difficulty: pm.blockchain.GetTd(currentBlock.Hash(), currentBlock.NumberU64()), - Genesis: pm.blockchain.Genesis().Hash(), - Config: pm.blockchain.Config(), - Head: currentBlock.Hash(), - } -} diff --git a/eth/peer.go b/eth/peer.go deleted file mode 100644 index 9ce569c..0000000 --- a/eth/peer.go +++ /dev/null @@ -1,546 +0,0 @@ -// Copyright 2015 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. - -package eth - -import ( - "errors" - "fmt" - "math/big" - "sync" - "time" - - mapset "github.com/deckarep/golang-set" - "github.com/ava-labs/go-ethereum/common" - "github.com/ava-labs/go-ethereum/core/types" - "github.com/ava-labs/go-ethereum/p2p" - "github.com/ava-labs/go-ethereum/rlp" -) - -var ( - errClosed = errors.New("peer set is closed") - errAlreadyRegistered = errors.New("peer is already registered") - errNotRegistered = errors.New("peer is not registered") -) - -const ( - maxKnownTxs = 32768 // Maximum transactions hashes to keep in the known list (prevent DOS) - maxKnownBlocks = 1024 // Maximum block hashes to keep in the known list (prevent DOS) - - // maxQueuedTxs is the maximum number of transaction lists to queue up before - // dropping broadcasts. This is a sensitive number as a transaction list might - // contain a single transaction, or thousands. - maxQueuedTxs = 128 - - // maxQueuedProps is the maximum number of block propagations to queue up before - // dropping broadcasts. There's not much point in queueing stale blocks, so a few - // that might cover uncles should be enough. - maxQueuedProps = 4 - - // maxQueuedAnns is the maximum number of block announcements to queue up before - // dropping broadcasts. Similarly to block propagations, there's no point to queue - // above some healthy uncle limit, so use that. - maxQueuedAnns = 4 - - handshakeTimeout = 5 * time.Second -) - -// PeerInfo represents a short summary of the Ethereum sub-protocol metadata known -// about a connected peer. -type PeerInfo struct { - Version int `json:"version"` // Ethereum protocol version negotiated - Difficulty *big.Int `json:"difficulty"` // Total difficulty of the peer's blockchain - Head string `json:"head"` // SHA3 hash of the peer's best owned block -} - -// propEvent is a block propagation, waiting for its turn in the broadcast queue. -type propEvent struct { - block *types.Block - td *big.Int -} - -type peer struct { - id string - - *p2p.Peer - rw p2p.MsgReadWriter - - version int // Protocol version negotiated - syncDrop *time.Timer // Timed connection dropper if sync progress isn't validated in time - - head common.Hash - td *big.Int - lock sync.RWMutex - - knownTxs mapset.Set // Set of transaction hashes known to be known by this peer - knownBlocks mapset.Set // Set of block hashes known to be known by this peer - queuedTxs chan []*types.Transaction // Queue of transactions to broadcast to the peer - queuedProps chan *propEvent // Queue of blocks to broadcast to the peer - queuedAnns chan *types.Block // Queue of blocks to announce to the peer - term chan struct{} // Termination channel to stop the broadcaster -} - -func newPeer(version int, p *p2p.Peer, rw p2p.MsgReadWriter) *peer { - return &peer{ - Peer: p, - rw: rw, - version: version, - id: fmt.Sprintf("%x", p.ID().Bytes()[:8]), - knownTxs: mapset.NewSet(), - knownBlocks: mapset.NewSet(), - queuedTxs: make(chan []*types.Transaction, maxQueuedTxs), - queuedProps: make(chan *propEvent, maxQueuedProps), - queuedAnns: make(chan *types.Block, maxQueuedAnns), - term: make(chan struct{}), - } -} - -// broadcast is a write loop that multiplexes block propagations, announcements -// and transaction broadcasts into the remote peer. The goal is to have an async -// writer that does not lock up node internals. -func (p *peer) broadcast() { - for { - select { - case txs := <-p.queuedTxs: - if err := p.SendTransactions(txs); err != nil { - return - } - p.Log().Trace("Broadcast transactions", "count", len(txs)) - - case prop := <-p.queuedProps: - if err := p.SendNewBlock(prop.block, prop.td); err != nil { - return - } - p.Log().Trace("Propagated block", "number", prop.block.Number(), "hash", prop.block.Hash(), "td", prop.td) - - case block := <-p.queuedAnns: - if err := p.SendNewBlockHashes([]common.Hash{block.Hash()}, []uint64{block.NumberU64()}); err != nil { - return - } - p.Log().Trace("Announced block", "number", block.Number(), "hash", block.Hash()) - - case <-p.term: - return - } - } -} - -// close signals the broadcast goroutine to terminate. -func (p *peer) close() { - close(p.term) -} - -// Info gathers and returns a collection of metadata known about a peer. -func (p *peer) Info() *PeerInfo { - hash, td := p.Head() - - return &PeerInfo{ - Version: p.version, - Difficulty: td, - Head: hash.Hex(), - } -} - -// Head retrieves a copy of the current head hash and total difficulty of the -// peer. -func (p *peer) Head() (hash common.Hash, td *big.Int) { - p.lock.RLock() - defer p.lock.RUnlock() - - copy(hash[:], p.head[:]) - return hash, new(big.Int).Set(p.td) -} - -// SetHead updates the head hash and total difficulty of the peer. -func (p *peer) SetHead(hash common.Hash, td *big.Int) { - p.lock.Lock() - defer p.lock.Unlock() - - copy(p.head[:], hash[:]) - p.td.Set(td) -} - -// MarkBlock marks a block as known for the peer, ensuring that the block will -// never be propagated to this particular peer. -func (p *peer) MarkBlock(hash common.Hash) { - // If we reached the memory allowance, drop a previously known block hash - for p.knownBlocks.Cardinality() >= maxKnownBlocks { - p.knownBlocks.Pop() - } - p.knownBlocks.Add(hash) -} - -// MarkTransaction marks a transaction as known for the peer, ensuring that it -// will never be propagated to this particular peer. -func (p *peer) MarkTransaction(hash common.Hash) { - // If we reached the memory allowance, drop a previously known transaction hash - for p.knownTxs.Cardinality() >= maxKnownTxs { - p.knownTxs.Pop() - } - p.knownTxs.Add(hash) -} - -// SendTransactions sends transactions to the peer and includes the hashes -// in its transaction hash set for future reference. -func (p *peer) SendTransactions(txs types.Transactions) error { - // Mark all the transactions as known, but ensure we don't overflow our limits - for _, tx := range txs { - p.knownTxs.Add(tx.Hash()) - } - for p.knownTxs.Cardinality() >= maxKnownTxs { - p.knownTxs.Pop() - } - return p2p.Send(p.rw, TxMsg, txs) -} - -// AsyncSendTransactions queues list of transactions propagation to a remote -// peer. If the peer's broadcast queue is full, the event is silently dropped. -func (p *peer) AsyncSendTransactions(txs []*types.Transaction) { - select { - case p.queuedTxs <- txs: - // Mark all the transactions as known, but ensure we don't overflow our limits - for _, tx := range txs { - p.knownTxs.Add(tx.Hash()) - } - for p.knownTxs.Cardinality() >= maxKnownTxs { - p.knownTxs.Pop() - } - default: - p.Log().Debug("Dropping transaction propagation", "count", len(txs)) - } -} - -// SendNewBlockHashes announces the availability of a number of blocks through -// a hash notification. -func (p *peer) SendNewBlockHashes(hashes []common.Hash, numbers []uint64) error { - // Mark all the block hashes as known, but ensure we don't overflow our limits - for _, hash := range hashes { - p.knownBlocks.Add(hash) - } - for p.knownBlocks.Cardinality() >= maxKnownBlocks { - p.knownBlocks.Pop() - } - request := make(newBlockHashesData, len(hashes)) - for i := 0; i < len(hashes); i++ { - request[i].Hash = hashes[i] - request[i].Number = numbers[i] - } - return p2p.Send(p.rw, NewBlockHashesMsg, request) -} - -// AsyncSendNewBlockHash queues the availability of a block for propagation to a -// remote peer. If the peer's broadcast queue is full, the event is silently -// dropped. -func (p *peer) AsyncSendNewBlockHash(block *types.Block) { - select { - case p.queuedAnns <- block: - // Mark all the block hash as known, but ensure we don't overflow our limits - p.knownBlocks.Add(block.Hash()) - for p.knownBlocks.Cardinality() >= maxKnownBlocks { - p.knownBlocks.Pop() - } - default: - p.Log().Debug("Dropping block announcement", "number", block.NumberU64(), "hash", block.Hash()) - } -} - -// SendNewBlock propagates an entire block to a remote peer. -func (p *peer) SendNewBlock(block *types.Block, td *big.Int) error { - // Mark all the block hash as known, but ensure we don't overflow our limits - p.knownBlocks.Add(block.Hash()) - for p.knownBlocks.Cardinality() >= maxKnownBlocks { - p.knownBlocks.Pop() - } - return p2p.Send(p.rw, NewBlockMsg, []interface{}{block, td}) -} - -// AsyncSendNewBlock queues an entire block for propagation to a remote peer. If -// the peer's broadcast queue is full, the event is silently dropped. -func (p *peer) AsyncSendNewBlock(block *types.Block, td *big.Int) { - select { - case p.queuedProps <- &propEvent{block: block, td: td}: - // Mark all the block hash as known, but ensure we don't overflow our limits - p.knownBlocks.Add(block.Hash()) - for p.knownBlocks.Cardinality() >= maxKnownBlocks { - p.knownBlocks.Pop() - } - default: - p.Log().Debug("Dropping block propagation", "number", block.NumberU64(), "hash", block.Hash()) - } -} - -// SendBlockHeaders sends a batch of block headers to the remote peer. -func (p *peer) SendBlockHeaders(headers []*types.Header) error { - return p2p.Send(p.rw, BlockHeadersMsg, headers) -} - -// SendBlockBodies sends a batch of block contents to the remote peer. -func (p *peer) SendBlockBodies(bodies []*blockBody) error { - return p2p.Send(p.rw, BlockBodiesMsg, blockBodiesData(bodies)) -} - -// SendBlockBodiesRLP sends a batch of block contents to the remote peer from -// an already RLP encoded format. -func (p *peer) SendBlockBodiesRLP(bodies []rlp.RawValue) error { - return p2p.Send(p.rw, BlockBodiesMsg, bodies) -} - -// SendNodeDataRLP sends a batch of arbitrary internal data, corresponding to the -// hashes requested. -func (p *peer) SendNodeData(data [][]byte) error { - return p2p.Send(p.rw, NodeDataMsg, data) -} - -// SendReceiptsRLP sends a batch of transaction receipts, corresponding to the -// ones requested from an already RLP encoded format. -func (p *peer) SendReceiptsRLP(receipts []rlp.RawValue) error { - return p2p.Send(p.rw, ReceiptsMsg, receipts) -} - -// RequestOneHeader is a wrapper around the header query functions to fetch a -// single header. It is used solely by the fetcher. -func (p *peer) RequestOneHeader(hash common.Hash) error { - p.Log().Debug("Fetching single header", "hash", hash) - return p2p.Send(p.rw, GetBlockHeadersMsg, &getBlockHeadersData{Origin: hashOrNumber{Hash: hash}, Amount: uint64(1), Skip: uint64(0), Reverse: false}) -} - -// RequestHeadersByHash fetches a batch of blocks' headers corresponding to the -// specified header query, based on the hash of an origin block. -func (p *peer) RequestHeadersByHash(origin common.Hash, amount int, skip int, reverse bool) error { - p.Log().Debug("Fetching batch of headers", "count", amount, "fromhash", origin, "skip", skip, "reverse", reverse) - return p2p.Send(p.rw, GetBlockHeadersMsg, &getBlockHeadersData{Origin: hashOrNumber{Hash: origin}, Amount: uint64(amount), Skip: uint64(skip), Reverse: reverse}) -} - -// RequestHeadersByNumber fetches a batch of blocks' headers corresponding to the -// specified header query, based on the number of an origin block. -func (p *peer) RequestHeadersByNumber(origin uint64, amount int, skip int, reverse bool) error { - p.Log().Debug("Fetching batch of headers", "count", amount, "fromnum", origin, "skip", skip, "reverse", reverse) - return p2p.Send(p.rw, GetBlockHeadersMsg, &getBlockHeadersData{Origin: hashOrNumber{Number: origin}, Amount: uint64(amount), Skip: uint64(skip), Reverse: reverse}) -} - -// RequestBodies fetches a batch of blocks' bodies corresponding to the hashes -// specified. -func (p *peer) RequestBodies(hashes []common.Hash) error { - p.Log().Debug("Fetching batch of block bodies", "count", len(hashes)) - return p2p.Send(p.rw, GetBlockBodiesMsg, hashes) -} - -// RequestNodeData fetches a batch of arbitrary data from a node's known state -// data, corresponding to the specified hashes. -func (p *peer) RequestNodeData(hashes []common.Hash) error { - p.Log().Debug("Fetching batch of state data", "count", len(hashes)) - return p2p.Send(p.rw, GetNodeDataMsg, hashes) -} - -// RequestReceipts fetches a batch of transaction receipts from a remote node. -func (p *peer) RequestReceipts(hashes []common.Hash) error { - p.Log().Debug("Fetching batch of receipts", "count", len(hashes)) - return p2p.Send(p.rw, GetReceiptsMsg, hashes) -} - -// Handshake executes the eth protocol handshake, negotiating version number, -// network IDs, difficulties, head and genesis blocks. -func (p *peer) Handshake(network uint64, td *big.Int, head common.Hash, genesis common.Hash) error { - // Send out own handshake in a new thread - errc := make(chan error, 2) - var status statusData // safe to read after two values have been received from errc - - go func() { - errc <- p2p.Send(p.rw, StatusMsg, &statusData{ - ProtocolVersion: uint32(p.version), - NetworkId: network, - TD: td, - CurrentBlock: head, - GenesisBlock: genesis, - }) - }() - go func() { - errc <- p.readStatus(network, &status, genesis) - }() - timeout := time.NewTimer(handshakeTimeout) - defer timeout.Stop() - for i := 0; i < 2; i++ { - select { - case err := <-errc: - if err != nil { - return err - } - case <-timeout.C: - return p2p.DiscReadTimeout - } - } - p.td, p.head = status.TD, status.CurrentBlock - return nil -} - -func (p *peer) readStatus(network uint64, status *statusData, genesis common.Hash) (err error) { - msg, err := p.rw.ReadMsg() - if err != nil { - return err - } - if msg.Code != StatusMsg { - return errResp(ErrNoStatusMsg, "first msg has code %x (!= %x)", msg.Code, StatusMsg) - } - if msg.Size > protocolMaxMsgSize { - return errResp(ErrMsgTooLarge, "%v > %v", msg.Size, protocolMaxMsgSize) - } - // Decode the handshake and make sure everything matches - if err := msg.Decode(&status); err != nil { - return errResp(ErrDecode, "msg %v: %v", msg, err) - } - if status.GenesisBlock != genesis { - return errResp(ErrGenesisBlockMismatch, "%x (!= %x)", status.GenesisBlock[:8], genesis[:8]) - } - if status.NetworkId != network { - return errResp(ErrNetworkIdMismatch, "%d (!= %d)", status.NetworkId, network) - } - if int(status.ProtocolVersion) != p.version { - return errResp(ErrProtocolVersionMismatch, "%d (!= %d)", status.ProtocolVersion, p.version) - } - return nil -} - -// String implements fmt.Stringer. -func (p *peer) String() string { - return fmt.Sprintf("Peer %s [%s]", p.id, - fmt.Sprintf("eth/%2d", p.version), - ) -} - -// peerSet represents the collection of active peers currently participating in -// the Ethereum sub-protocol. -type peerSet struct { - peers map[string]*peer - lock sync.RWMutex - closed bool -} - -// newPeerSet creates a new peer set to track the active participants. -func newPeerSet() *peerSet { - return &peerSet{ - peers: make(map[string]*peer), - } -} - -// Register injects a new peer into the working set, or returns an error if the -// peer is already known. If a new peer it registered, its broadcast loop is also -// started. -func (ps *peerSet) Register(p *peer) error { - ps.lock.Lock() - defer ps.lock.Unlock() - - if ps.closed { - return errClosed - } - if _, ok := ps.peers[p.id]; ok { - return errAlreadyRegistered - } - ps.peers[p.id] = p - go p.broadcast() - - return nil -} - -// Unregister removes a remote peer from the active set, disabling any further -// actions to/from that particular entity. -func (ps *peerSet) Unregister(id string) error { - ps.lock.Lock() - defer ps.lock.Unlock() - - p, ok := ps.peers[id] - if !ok { - return errNotRegistered - } - delete(ps.peers, id) - p.close() - - return nil -} - -// Peer retrieves the registered peer with the given id. -func (ps *peerSet) Peer(id string) *peer { - ps.lock.RLock() - defer ps.lock.RUnlock() - - return ps.peers[id] -} - -// Len returns if the current number of peers in the set. -func (ps *peerSet) Len() int { - ps.lock.RLock() - defer ps.lock.RUnlock() - - return len(ps.peers) -} - -// PeersWithoutBlock retrieves a list of peers that do not have a given block in -// their set of known hashes. -func (ps *peerSet) PeersWithoutBlock(hash common.Hash) []*peer { - ps.lock.RLock() - defer ps.lock.RUnlock() - - list := make([]*peer, 0, len(ps.peers)) - for _, p := range ps.peers { - if !p.knownBlocks.Contains(hash) { - list = append(list, p) - } - } - return list -} - -// PeersWithoutTx retrieves a list of peers that do not have a given transaction -// in their set of known hashes. -func (ps *peerSet) PeersWithoutTx(hash common.Hash) []*peer { - ps.lock.RLock() - defer ps.lock.RUnlock() - - list := make([]*peer, 0, len(ps.peers)) - for _, p := range ps.peers { - if !p.knownTxs.Contains(hash) { - list = append(list, p) - } - } - return list -} - -// BestPeer retrieves the known peer with the currently highest total difficulty. -func (ps *peerSet) BestPeer() *peer { - ps.lock.RLock() - defer ps.lock.RUnlock() - - var ( - bestPeer *peer - bestTd *big.Int - ) - for _, p := range ps.peers { - if _, td := p.Head(); bestPeer == nil || td.Cmp(bestTd) > 0 { - bestPeer, bestTd = p, td - } - } - return bestPeer -} - -// Close disconnects all peers. -// No new peers can be registered after Close has returned. -func (ps *peerSet) Close() { - ps.lock.Lock() - defer ps.lock.Unlock() - - for _, p := range ps.peers { - p.Disconnect(p2p.DiscQuitting) - } - ps.closed = true -} diff --git a/eth/protocol.go b/eth/protocol.go index 07d2def..e205aad 100644 --- a/eth/protocol.go +++ b/eth/protocol.go @@ -22,8 +22,8 @@ import ( "math/big" "github.com/ava-labs/coreth/core" + "github.com/ava-labs/coreth/core/types" "github.com/ava-labs/go-ethereum/common" - "github.com/ava-labs/go-ethereum/core/types" "github.com/ava-labs/go-ethereum/event" "github.com/ava-labs/go-ethereum/rlp" ) diff --git a/eth/sync.go b/eth/sync.go deleted file mode 100644 index 6f067a3..0000000 --- a/eth/sync.go +++ /dev/null @@ -1,216 +0,0 @@ -// Copyright 2015 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. - -package eth - -import ( - "math/rand" - "sync/atomic" - "time" - - "github.com/ava-labs/go-ethereum/common" - "github.com/ava-labs/go-ethereum/core/types" - "github.com/ava-labs/go-ethereum/eth/downloader" - "github.com/ava-labs/go-ethereum/log" - "github.com/ava-labs/go-ethereum/p2p/enode" -) - -const ( - forceSyncCycle = 10 * time.Second // Time interval to force syncs, even if few peers are available - minDesiredPeerCount = 5 // Amount of peers desired to start syncing - - // This is the target size for the packs of transactions sent by txsyncLoop. - // A pack can get larger than this if a single transactions exceeds this size. - txsyncPackSize = 100 * 1024 -) - -type txsync struct { - p *peer - txs []*types.Transaction -} - -// syncTransactions starts sending all currently pending transactions to the given peer. -func (pm *ProtocolManager) syncTransactions(p *peer) { - var txs types.Transactions - pending, _ := pm.txpool.Pending() - for _, batch := range pending { - txs = append(txs, batch...) - } - if len(txs) == 0 { - return - } - select { - case pm.txsyncCh <- &txsync{p, txs}: - case <-pm.quitSync: - } -} - -// txsyncLoop takes care of the initial transaction sync for each new -// connection. When a new peer appears, we relay all currently pending -// transactions. In order to minimise egress bandwidth usage, we send -// the transactions in small packs to one peer at a time. -func (pm *ProtocolManager) txsyncLoop() { - var ( - pending = make(map[enode.ID]*txsync) - sending = false // whether a send is active - pack = new(txsync) // the pack that is being sent - done = make(chan error, 1) // result of the send - ) - - // send starts a sending a pack of transactions from the sync. - send := func(s *txsync) { - // Fill pack with transactions up to the target size. - size := common.StorageSize(0) - pack.p = s.p - pack.txs = pack.txs[:0] - for i := 0; i < len(s.txs) && size < txsyncPackSize; i++ { - pack.txs = append(pack.txs, s.txs[i]) - size += s.txs[i].Size() - } - // Remove the transactions that will be sent. - s.txs = s.txs[:copy(s.txs, s.txs[len(pack.txs):])] - if len(s.txs) == 0 { - delete(pending, s.p.ID()) - } - // Send the pack in the background. - s.p.Log().Trace("Sending batch of transactions", "count", len(pack.txs), "bytes", size) - sending = true - go func() { done <- pack.p.SendTransactions(pack.txs) }() - } - - // pick chooses the next pending sync. - pick := func() *txsync { - if len(pending) == 0 { - return nil - } - n := rand.Intn(len(pending)) + 1 - for _, s := range pending { - if n--; n == 0 { - return s - } - } - return nil - } - - for { - select { - case s := <-pm.txsyncCh: - pending[s.p.ID()] = s - if !sending { - send(s) - } - case err := <-done: - sending = false - // Stop tracking peers that cause send failures. - if err != nil { - pack.p.Log().Debug("Transaction send failed", "err", err) - delete(pending, pack.p.ID()) - } - // Schedule the next send. - if s := pick(); s != nil { - send(s) - } - case <-pm.quitSync: - return - } - } -} - -// syncer is responsible for periodically synchronising with the network, both -// downloading hashes and blocks as well as handling the announcement handler. -func (pm *ProtocolManager) syncer() { - // Start and ensure cleanup of sync mechanisms - pm.fetcher.Start() - defer pm.fetcher.Stop() - defer pm.downloader.Terminate() - - // Wait for different events to fire synchronisation operations - forceSync := time.NewTicker(forceSyncCycle) - defer forceSync.Stop() - - for { - select { - case <-pm.newPeerCh: - // Make sure we have peers to select from, then sync - if pm.peers.Len() < minDesiredPeerCount { - break - } - go pm.synchronise(pm.peers.BestPeer()) - - case <-forceSync.C: - // Force a sync even if not enough peers are present - go pm.synchronise(pm.peers.BestPeer()) - - case <-pm.noMorePeers: - return - } - } -} - -// synchronise tries to sync up our local block chain with a remote peer. -func (pm *ProtocolManager) synchronise(peer *peer) { - // Short circuit if no peers are available - if peer == nil { - return - } - // Make sure the peer's TD is higher than our own - currentBlock := pm.blockchain.CurrentBlock() - td := pm.blockchain.GetTd(currentBlock.Hash(), currentBlock.NumberU64()) - - pHead, pTd := peer.Head() - if pTd.Cmp(td) <= 0 { - return - } - // Otherwise try to sync with the downloader - mode := downloader.FullSync - if atomic.LoadUint32(&pm.fastSync) == 1 { - // Fast sync was explicitly requested, and explicitly granted - mode = downloader.FastSync - } - if mode == downloader.FastSync { - // Make sure the peer's total difficulty we are synchronizing is higher. - if pm.blockchain.GetTdByHash(pm.blockchain.CurrentFastBlock().Hash()).Cmp(pTd) >= 0 { - return - } - } - // Run the sync cycle, and disable fast sync if we've went past the pivot block - if err := pm.downloader.Synchronise(peer.id, pHead, pTd, mode); err != nil { - return - } - if atomic.LoadUint32(&pm.fastSync) == 1 { - log.Info("Fast sync complete, auto disabling") - atomic.StoreUint32(&pm.fastSync, 0) - } - // If we've successfully finished a sync cycle and passed any required checkpoint, - // enable accepting transactions from the network. - head := pm.blockchain.CurrentBlock() - if head.NumberU64() >= pm.checkpointNumber { - // Checkpoint passed, sanity check the timestamp to have a fallback mechanism - // for non-checkpointed (number = 0) private networks. - if head.Time() >= uint64(time.Now().AddDate(0, -1, 0).Unix()) { - atomic.StoreUint32(&pm.acceptTxs, 1) - } - } - if head.NumberU64() > 0 { - // We've completed a sync cycle, notify all peers of new state. This path is - // essential in star-topology networks where a gateway node needs to notify - // all its out-of-date peers of the availability of a new block. This failure - // scenario will most often crop up in private and hackathon networks with - // degenerate connectivity, but it should be healthy for the mainnet too to - // more reliably update peers or the local TD state. - go pm.BroadcastBlock(head, false) - } -} diff --git a/eth/tracers/internal/tracers/4byte_tracer.js b/eth/tracers/internal/tracers/4byte_tracer.js new file mode 100644 index 0000000..462b4ad --- /dev/null +++ b/eth/tracers/internal/tracers/4byte_tracer.js @@ -0,0 +1,86 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. + +// 4byteTracer searches for 4byte-identifiers, and collects them for post-processing. +// It collects the methods identifiers along with the size of the supplied data, so +// a reversed signature can be matched against the size of the data. +// +// Example: +// > debug.traceTransaction( "0x214e597e35da083692f5386141e69f47e973b2c56e7a8073b1ea08fd7571e9de", {tracer: "4byteTracer"}) +// { +// 0x27dc297e-128: 1, +// 0x38cc4831-0: 2, +// 0x524f3889-96: 1, +// 0xadf59f99-288: 1, +// 0xc281d19e-0: 1 +// } +{ + // ids aggregates the 4byte ids found. + ids : {}, + + // callType returns 'false' for non-calls, or the peek-index for the first param + // after 'value', i.e. meminstart. + callType: function(opstr){ + switch(opstr){ + case "CALL": case "CALLCODE": + // gas, addr, val, memin, meminsz, memout, memoutsz + return 3; // stack ptr to memin + + case "DELEGATECALL": case "STATICCALL": + // gas, addr, memin, meminsz, memout, memoutsz + return 2; // stack ptr to memin + } + return false; + }, + + // store save the given indentifier and datasize. + store: function(id, size){ + var key = "" + toHex(id) + "-" + size; + this.ids[key] = this.ids[key] + 1 || 1; + }, + + // step is invoked for every opcode that the VM executes. + step: function(log, db) { + // Skip any opcodes that are not internal calls + var ct = this.callType(log.op.toString()); + if (!ct) { + return; + } + // Skip any pre-compile invocations, those are just fancy opcodes + if (isPrecompiled(toAddress(log.stack.peek(1).toString(16)))) { + return; + } + // Gather internal call details + var inSz = log.stack.peek(ct + 1).valueOf(); + if (inSz >= 4) { + var inOff = log.stack.peek(ct).valueOf(); + this.store(log.memory.slice(inOff, inOff + 4), inSz-4); + } + }, + + // fault is invoked when the actual execution of an opcode fails. + fault: function(log, db) { }, + + // result is invoked when all the opcodes have been iterated over and returns + // the final result of the tracing. + result: function(ctx) { + // Save the outer calldata also + if (ctx.input.length >= 4) { + this.store(slice(ctx.input, 0, 4), ctx.input.length-4) + } + return this.ids; + }, +} diff --git a/eth/tracers/internal/tracers/assets.go b/eth/tracers/internal/tracers/assets.go new file mode 100644 index 0000000..b1930dc --- /dev/null +++ b/eth/tracers/internal/tracers/assets.go @@ -0,0 +1,458 @@ +// Code generated by go-bindata. DO NOT EDIT. +// sources: +// 4byte_tracer.js (2.933kB) +// bigram_tracer.js (1.712kB) +// call_tracer.js (8.643kB) +// evmdis_tracer.js (4.195kB) +// noop_tracer.js (1.271kB) +// opcount_tracer.js (1.372kB) +// prestate_tracer.js (4.234kB) +// trigram_tracer.js (1.788kB) +// unigram_tracer.js (1.51kB) + +package tracers + +import ( + "bytes" + "compress/gzip" + "crypto/sha256" + "fmt" + "io" + "io/ioutil" + "os" + "path/filepath" + "strings" + "time" +) + +func bindataRead(data []byte, name string) ([]byte, error) { + gz, err := gzip.NewReader(bytes.NewBuffer(data)) + if err != nil { + return nil, fmt.Errorf("read %q: %w", name, err) + } + + var buf bytes.Buffer + _, err = io.Copy(&buf, gz) + clErr := gz.Close() + + if err != nil { + return nil, fmt.Errorf("read %q: %w", name, err) + } + if clErr != nil { + return nil, err + } + + return buf.Bytes(), nil +} + +type asset struct { + bytes []byte + info os.FileInfo + digest [sha256.Size]byte +} + +type bindataFileInfo struct { + name string + size int64 + mode os.FileMode + modTime time.Time +} + +func (fi bindataFileInfo) Name() string { + return fi.name +} +func (fi bindataFileInfo) Size() int64 { + return fi.size +} +func (fi bindataFileInfo) Mode() os.FileMode { + return fi.mode +} +func (fi bindataFileInfo) ModTime() time.Time { + return fi.modTime +} +func (fi bindataFileInfo) IsDir() bool { + return false +} +func (fi bindataFileInfo) Sys() interface{} { + return nil +} + +var __4byte_tracerJs = 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+ +func _4byte_tracerJsBytes() ([]byte, error) { + return bindataRead( + __4byte_tracerJs, + "4byte_tracer.js", + ) +} + +func _4byte_tracerJs() (*asset, error) { + bytes, err := _4byte_tracerJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "4byte_tracer.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0xb4, 0xc5, 0x48, 0x2d, 0xd9, 0x43, 0x95, 0x93, 0x3b, 0x93, 0x2c, 0x47, 0x8c, 0x84, 0x32, 0x3c, 0x8b, 0x2e, 0xf3, 0x72, 0xc4, 0x57, 0xe6, 0x3a, 0xb3, 0xdf, 0x1d, 0xbf, 0x45, 0x3, 0xfc, 0xa}} + return a, nil +} + +var _bigram_tracerJs = 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+ +func bigram_tracerJsBytes() ([]byte, error) { + return bindataRead( + _bigram_tracerJs, + "bigram_tracer.js", + ) +} + +func bigram_tracerJs() (*asset, error) { + bytes, err := bigram_tracerJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "bigram_tracer.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0x77, 0x6c, 0xd, 0x24, 0xf2, 0x49, 0xbd, 0x58, 0x8b, 0xb5, 0xd1, 0xc9, 0xcd, 0xcf, 0x5b, 0x3e, 0x5c, 0xfb, 0x14, 0x50, 0xe7, 0xe3, 0xb9, 0xd1, 0x54, 0x69, 0xe6, 0x5e, 0x45, 0xa6, 0x2c, 0x6c}} + return a, nil +} + +var _call_tracerJs = 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+ +func call_tracerJsBytes() ([]byte, error) { + return bindataRead( + _call_tracerJs, + "call_tracer.js", + ) +} + +func call_tracerJs() (*asset, error) { + bytes, err := call_tracerJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "call_tracer.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0xe9, 0xef, 0x68, 0xda, 0xd8, 0x9, 0xf5, 0xd5, 0x71, 0xa8, 0x8a, 0xfb, 0x30, 0xe8, 0xf0, 0x72, 0x14, 0x36, 0x6b, 0x62, 0x5a, 0x4e, 0xff, 0x16, 0xdc, 0xd3, 0x2c, 0x68, 0x7b, 0x79, 0x9f, 0xd3}} + return a, nil +} + +var _evmdis_tracerJs = 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+ +func evmdis_tracerJsBytes() ([]byte, error) { + return bindataRead( + _evmdis_tracerJs, + "evmdis_tracer.js", + ) +} + +func evmdis_tracerJs() (*asset, error) { + bytes, err := evmdis_tracerJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "evmdis_tracer.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0xb5, 0xc8, 0x73, 0x8e, 0xfb, 0x1f, 0x84, 0x7d, 0x37, 0xd9, 0x26, 0x24, 0x37, 0xb8, 0x65, 0xb1, 0xed, 0xa0, 0x76, 0x9a, 0xf0, 0x8e, 0x3a, 0x9b, 0x20, 0x93, 0x27, 0x26, 0x2e, 0xc9, 0x9b, 0xde}} + return a, nil +} + +var _noop_tracerJs = 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+ +func noop_tracerJsBytes() ([]byte, error) { + return bindataRead( + _noop_tracerJs, + "noop_tracer.js", + ) +} + +func noop_tracerJs() (*asset, error) { + bytes, err := noop_tracerJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "noop_tracer.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0xe3, 0xf, 0x1c, 0x6f, 0x65, 0xaf, 0x90, 0x31, 0xab, 0xf, 0xe0, 0xca, 0x54, 0x7, 0xfd, 0xd3, 0xa1, 0x4a, 0x14, 0x1, 0x2a, 0x9d, 0xdc, 0xb9, 0x64, 0x69, 0x83, 0x30, 0xb1, 0x2a, 0xbd, 0xfb}} + return a, nil +} + +var _opcount_tracerJs = 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+ +func opcount_tracerJsBytes() ([]byte, error) { + return bindataRead( + _opcount_tracerJs, + "opcount_tracer.js", + ) +} + +func opcount_tracerJs() (*asset, error) { + bytes, err := opcount_tracerJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "opcount_tracer.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0x27, 0xe, 0x97, 0x88, 0x9b, 0x53, 0xbb, 0x20, 0x44, 0xd8, 0xf5, 0xeb, 0x41, 0xd2, 0x7e, 0xd6, 0xda, 0x6b, 0xf5, 0xaf, 0x0, 0x75, 0x9f, 0xd9, 0x22, 0xc, 0x6e, 0x74, 0xac, 0x2a, 0xa9, 0xa7}} + return a, nil +} + +var _prestate_tracerJs = 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+ +func prestate_tracerJsBytes() ([]byte, error) { + return bindataRead( + _prestate_tracerJs, + "prestate_tracer.js", + ) +} + +func prestate_tracerJs() (*asset, error) { + bytes, err := prestate_tracerJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "prestate_tracer.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0xe9, 0x79, 0x70, 0x4f, 0xc5, 0x78, 0x57, 0x63, 0x6f, 0x5, 0x31, 0xce, 0x3e, 0x5d, 0xbd, 0x71, 0x4, 0x46, 0x78, 0xcd, 0x1d, 0xcd, 0xb9, 0xd8, 0x10, 0xff, 0xe6, 0xc5, 0x59, 0xb9, 0x25, 0x6e}} + return a, nil +} + +var _trigram_tracerJs = 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+ +func trigram_tracerJsBytes() ([]byte, error) { + return bindataRead( + _trigram_tracerJs, + "trigram_tracer.js", + ) +} + +func trigram_tracerJs() (*asset, error) { + bytes, err := trigram_tracerJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "trigram_tracer.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0x40, 0x63, 0xe1, 0x42, 0x60, 0x7, 0x1b, 0x79, 0x47, 0x1, 0xa1, 0xbf, 0xc4, 0x66, 0x19, 0x9b, 0x2b, 0x5a, 0x1f, 0x82, 0x3d, 0xcf, 0xee, 0xe7, 0x60, 0x25, 0x2c, 0x4f, 0x13, 0x97, 0xc7, 0x18}} + return a, nil +} + +var _unigram_tracerJs = 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+ +func unigram_tracerJsBytes() ([]byte, error) { + return bindataRead( + _unigram_tracerJs, + "unigram_tracer.js", + ) +} + +func unigram_tracerJs() (*asset, error) { + bytes, err := unigram_tracerJsBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "unigram_tracer.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} + a := &asset{bytes: bytes, info: info, digest: [32]uint8{0x2f, 0x36, 0x14, 0xc2, 0xf6, 0xc3, 0x80, 0x2b, 0x4a, 0x11, 0x7d, 0xd5, 0x3e, 0xef, 0x23, 0xb5, 0xd6, 0xe6, 0xe6, 0x5, 0x41, 0xf6, 0x14, 0x7a, 0x39, 0xf7, 0xf8, 0xac, 0x89, 0x8e, 0x43, 0xe6}} + return a, nil +} + +// Asset loads and returns the asset for the given name. +// It returns an error if the asset could not be found or +// could not be loaded. +func Asset(name string) ([]byte, error) { + canonicalName := strings.Replace(name, "\\", "/", -1) + if f, ok := _bindata[canonicalName]; ok { + a, err := f() + if err != nil { + return nil, fmt.Errorf("Asset %s can't read by error: %v", name, err) + } + return a.bytes, nil + } + return nil, fmt.Errorf("Asset %s not found", name) +} + +// AssetString returns the asset contents as a string (instead of a []byte). +func AssetString(name string) (string, error) { + data, err := Asset(name) + return string(data), err +} + +// MustAsset is like Asset but panics when Asset would return an error. +// It simplifies safe initialization of global variables. +func MustAsset(name string) []byte { + a, err := Asset(name) + if err != nil { + panic("asset: Asset(" + name + "): " + err.Error()) + } + + return a +} + +// MustAssetString is like AssetString but panics when Asset would return an +// error. It simplifies safe initialization of global variables. +func MustAssetString(name string) string { + return string(MustAsset(name)) +} + +// AssetInfo loads and returns the asset info for the given name. +// It returns an error if the asset could not be found or +// could not be loaded. +func AssetInfo(name string) (os.FileInfo, error) { + canonicalName := strings.Replace(name, "\\", "/", -1) + if f, ok := _bindata[canonicalName]; ok { + a, err := f() + if err != nil { + return nil, fmt.Errorf("AssetInfo %s can't read by error: %v", name, err) + } + return a.info, nil + } + return nil, fmt.Errorf("AssetInfo %s not found", name) +} + +// AssetDigest returns the digest of the file with the given name. It returns an +// error if the asset could not be found or the digest could not be loaded. +func AssetDigest(name string) ([sha256.Size]byte, error) { + canonicalName := strings.Replace(name, "\\", "/", -1) + if f, ok := _bindata[canonicalName]; ok { + a, err := f() + if err != nil { + return [sha256.Size]byte{}, fmt.Errorf("AssetDigest %s can't read by error: %v", name, err) + } + return a.digest, nil + } + return [sha256.Size]byte{}, fmt.Errorf("AssetDigest %s not found", name) +} + +// Digests returns a map of all known files and their checksums. +func Digests() (map[string][sha256.Size]byte, error) { + mp := make(map[string][sha256.Size]byte, len(_bindata)) + for name := range _bindata { + a, err := _bindata[name]() + if err != nil { + return nil, err + } + mp[name] = a.digest + } + return mp, nil +} + +// AssetNames returns the names of the assets. +func AssetNames() []string { + names := make([]string, 0, len(_bindata)) + for name := range _bindata { + names = append(names, name) + } + return names +} + +// _bindata is a table, holding each asset generator, mapped to its name. +var _bindata = map[string]func() (*asset, error){ + "4byte_tracer.js": _4byte_tracerJs, + "bigram_tracer.js": bigram_tracerJs, + "call_tracer.js": call_tracerJs, + "evmdis_tracer.js": evmdis_tracerJs, + "noop_tracer.js": noop_tracerJs, + "opcount_tracer.js": opcount_tracerJs, + "prestate_tracer.js": prestate_tracerJs, + "trigram_tracer.js": trigram_tracerJs, + "unigram_tracer.js": unigram_tracerJs, +} + +// AssetDebug is true if the assets were built with the debug flag enabled. +const AssetDebug = false + +// AssetDir returns the file names below a certain +// directory embedded in the file by go-bindata. +// For example if you run go-bindata on data/... and data contains the +// following hierarchy: +// data/ +// foo.txt +// img/ +// a.png +// b.png +// then AssetDir("data") would return []string{"foo.txt", "img"}, +// AssetDir("data/img") would return []string{"a.png", "b.png"}, +// AssetDir("foo.txt") and AssetDir("notexist") would return an error, and +// AssetDir("") will return []string{"data"}. +func AssetDir(name string) ([]string, error) { + node := _bintree + if len(name) != 0 { + canonicalName := strings.Replace(name, "\\", "/", -1) + pathList := strings.Split(canonicalName, "/") + for _, p := range pathList { + node = node.Children[p] + if node == nil { + return nil, fmt.Errorf("Asset %s not found", name) + } + } + } + if node.Func != nil { + return nil, fmt.Errorf("Asset %s not found", name) + } + rv := make([]string, 0, len(node.Children)) + for childName := range node.Children { + rv = append(rv, childName) + } + return rv, nil +} + +type bintree struct { + Func func() (*asset, error) + Children map[string]*bintree +} + +var _bintree = &bintree{nil, map[string]*bintree{ + "4byte_tracer.js": {_4byte_tracerJs, map[string]*bintree{}}, + "bigram_tracer.js": {bigram_tracerJs, map[string]*bintree{}}, + "call_tracer.js": {call_tracerJs, map[string]*bintree{}}, + "evmdis_tracer.js": {evmdis_tracerJs, map[string]*bintree{}}, + "noop_tracer.js": {noop_tracerJs, map[string]*bintree{}}, + "opcount_tracer.js": {opcount_tracerJs, map[string]*bintree{}}, + "prestate_tracer.js": {prestate_tracerJs, map[string]*bintree{}}, + "trigram_tracer.js": {trigram_tracerJs, map[string]*bintree{}}, + "unigram_tracer.js": {unigram_tracerJs, map[string]*bintree{}}, +}} + +// RestoreAsset restores an asset under the given directory. +func RestoreAsset(dir, name string) error { + data, err := Asset(name) + if err != nil { + return err + } + info, err := AssetInfo(name) + if err != nil { + return err + } + err = os.MkdirAll(_filePath(dir, filepath.Dir(name)), os.FileMode(0755)) + if err != nil { + return err + } + err = ioutil.WriteFile(_filePath(dir, name), data, info.Mode()) + if err != nil { + return err + } + return os.Chtimes(_filePath(dir, name), info.ModTime(), info.ModTime()) +} + +// RestoreAssets restores an asset under the given directory recursively. +func RestoreAssets(dir, name string) error { + children, err := AssetDir(name) + // File + if err != nil { + return RestoreAsset(dir, name) + } + // Dir + for _, child := range children { + err = RestoreAssets(dir, filepath.Join(name, child)) + if err != nil { + return err + } + } + return nil +} + +func _filePath(dir, name string) string { + canonicalName := strings.Replace(name, "\\", "/", -1) + return filepath.Join(append([]string{dir}, strings.Split(canonicalName, "/")...)...) +} diff --git a/eth/tracers/internal/tracers/bigram_tracer.js b/eth/tracers/internal/tracers/bigram_tracer.js new file mode 100644 index 0000000..421c360 --- /dev/null +++ b/eth/tracers/internal/tracers/bigram_tracer.js @@ -0,0 +1,47 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. + +{ + // hist is the counters of opcode bigrams + hist: {}, + // lastOp is last operation + lastOp: '', + // execution depth of last op + lastDepth: 0, + // step is invoked for every opcode that the VM executes. + step: function(log, db) { + var op = log.op.toString(); + var depth = log.getDepth(); + if (depth == this.lastDepth){ + var key = this.lastOp+'-'+op; + if (this.hist[key]){ + this.hist[key]++; + } + else { + this.hist[key] = 1; + } + } + this.lastOp = op; + this.lastDepth = depth; + }, + // fault is invoked when the actual execution of an opcode fails. + fault: function(log, db) {}, + // result is invoked when all the opcodes have been iterated over and returns + // the final result of the tracing. + result: function(ctx) { + return this.hist; + }, +} diff --git a/eth/tracers/internal/tracers/call_tracer.js b/eth/tracers/internal/tracers/call_tracer.js new file mode 100644 index 0000000..f8b383c --- /dev/null +++ b/eth/tracers/internal/tracers/call_tracer.js @@ -0,0 +1,246 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. + +// callTracer is a full blown transaction tracer that extracts and reports all +// the internal calls made by a transaction, along with any useful information. +{ + // callstack is the current recursive call stack of the EVM execution. + callstack: [{}], + + // descended tracks whether we've just descended from an outer transaction into + // an inner call. + descended: false, + + // step is invoked for every opcode that the VM executes. + step: function(log, db) { + // Capture any errors immediately + var error = log.getError(); + if (error !== undefined) { + this.fault(log, db); + return; + } + // We only care about system opcodes, faster if we pre-check once + var syscall = (log.op.toNumber() & 0xf0) == 0xf0; + if (syscall) { + var op = log.op.toString(); + } + // If a new contract is being created, add to the call stack + if (syscall && (op == 'CREATE' || op == "CREATE2")) { + var inOff = log.stack.peek(1).valueOf(); + var inEnd = inOff + log.stack.peek(2).valueOf(); + + // Assemble the internal call report and store for completion + var call = { + type: op, + from: toHex(log.contract.getAddress()), + input: toHex(log.memory.slice(inOff, inEnd)), + gasIn: log.getGas(), + gasCost: log.getCost(), + value: '0x' + log.stack.peek(0).toString(16) + }; + this.callstack.push(call); + this.descended = true + return; + } + // If a contract is being self destructed, gather that as a subcall too + if (syscall && op == 'SELFDESTRUCT') { + var left = this.callstack.length; + if (this.callstack[left-1].calls === undefined) { + this.callstack[left-1].calls = []; + } + this.callstack[left-1].calls.push({type: op}); + return + } + // If a new method invocation is being done, add to the call stack + if (syscall && (op == 'CALL' || op == 'CALLCODE' || op == 'DELEGATECALL' || op == 'STATICCALL')) { + // Skip any pre-compile invocations, those are just fancy opcodes + var to = toAddress(log.stack.peek(1).toString(16)); + if (isPrecompiled(to)) { + return + } + var off = (op == 'DELEGATECALL' || op == 'STATICCALL' ? 0 : 1); + + var inOff = log.stack.peek(2 + off).valueOf(); + var inEnd = inOff + log.stack.peek(3 + off).valueOf(); + + // Assemble the internal call report and store for completion + var call = { + type: op, + from: toHex(log.contract.getAddress()), + to: toHex(to), + input: toHex(log.memory.slice(inOff, inEnd)), + gasIn: log.getGas(), + gasCost: log.getCost(), + outOff: log.stack.peek(4 + off).valueOf(), + outLen: log.stack.peek(5 + off).valueOf() + }; + if (op != 'DELEGATECALL' && op != 'STATICCALL') { + call.value = '0x' + log.stack.peek(2).toString(16); + } + this.callstack.push(call); + this.descended = true + return; + } + // If we've just descended into an inner call, retrieve it's true allowance. We + // need to extract if from within the call as there may be funky gas dynamics + // with regard to requested and actually given gas (2300 stipend, 63/64 rule). + if (this.descended) { + if (log.getDepth() >= this.callstack.length) { + this.callstack[this.callstack.length - 1].gas = log.getGas(); + } else { + // TODO(karalabe): The call was made to a plain account. We currently don't + // have access to the true gas amount inside the call and so any amount will + // mostly be wrong since it depends on a lot of input args. Skip gas for now. + } + this.descended = false; + } + // If an existing call is returning, pop off the call stack + if (syscall && op == 'REVERT') { + this.callstack[this.callstack.length - 1].error = "execution reverted"; + return; + } + if (log.getDepth() == this.callstack.length - 1) { + // Pop off the last call and get the execution results + var call = this.callstack.pop(); + + if (call.type == 'CREATE' || call.type == "CREATE2") { + // If the call was a CREATE, retrieve the contract address and output code + call.gasUsed = '0x' + bigInt(call.gasIn - call.gasCost - log.getGas()).toString(16); + delete call.gasIn; delete call.gasCost; + + var ret = log.stack.peek(0); + if (!ret.equals(0)) { + call.to = toHex(toAddress(ret.toString(16))); + call.output = toHex(db.getCode(toAddress(ret.toString(16)))); + } else if (call.error === undefined) { + call.error = "internal failure"; // TODO(karalabe): surface these faults somehow + } + } else { + // If the call was a contract call, retrieve the gas usage and output + if (call.gas !== undefined) { + call.gasUsed = '0x' + bigInt(call.gasIn - call.gasCost + call.gas - log.getGas()).toString(16); + + var ret = log.stack.peek(0); + if (!ret.equals(0)) { + call.output = toHex(log.memory.slice(call.outOff, call.outOff + call.outLen)); + } else if (call.error === undefined) { + call.error = "internal failure"; // TODO(karalabe): surface these faults somehow + } + } + delete call.gasIn; delete call.gasCost; + delete call.outOff; delete call.outLen; + } + if (call.gas !== undefined) { + call.gas = '0x' + bigInt(call.gas).toString(16); + } + // Inject the call into the previous one + var left = this.callstack.length; + if (this.callstack[left-1].calls === undefined) { + this.callstack[left-1].calls = []; + } + this.callstack[left-1].calls.push(call); + } + }, + + // fault is invoked when the actual execution of an opcode fails. + fault: function(log, db) { + // If the topmost call already reverted, don't handle the additional fault again + if (this.callstack[this.callstack.length - 1].error !== undefined) { + return; + } + // Pop off the just failed call + var call = this.callstack.pop(); + call.error = log.getError(); + + // Consume all available gas and clean any leftovers + if (call.gas !== undefined) { + call.gas = '0x' + bigInt(call.gas).toString(16); + call.gasUsed = call.gas + } + delete call.gasIn; delete call.gasCost; + delete call.outOff; delete call.outLen; + + // Flatten the failed call into its parent + var left = this.callstack.length; + if (left > 0) { + if (this.callstack[left-1].calls === undefined) { + this.callstack[left-1].calls = []; + } + this.callstack[left-1].calls.push(call); + return; + } + // Last call failed too, leave it in the stack + this.callstack.push(call); + }, + + // result is invoked when all the opcodes have been iterated over and returns + // the final result of the tracing. + result: function(ctx, db) { + var result = { + type: ctx.type, + from: toHex(ctx.from), + to: toHex(ctx.to), + value: '0x' + ctx.value.toString(16), + gas: '0x' + bigInt(ctx.gas).toString(16), + gasUsed: '0x' + bigInt(ctx.gasUsed).toString(16), + input: toHex(ctx.input), + output: toHex(ctx.output), + time: ctx.time, + }; + if (this.callstack[0].calls !== undefined) { + result.calls = this.callstack[0].calls; + } + if (this.callstack[0].error !== undefined) { + result.error = this.callstack[0].error; + } else if (ctx.error !== undefined) { + result.error = ctx.error; + } + if (result.error !== undefined) { + delete result.output; + } + return this.finalize(result); + }, + + // finalize recreates a call object using the final desired field oder for json + // serialization. This is a nicety feature to pass meaningfully ordered results + // to users who don't interpret it, just display it. + finalize: function(call) { + var sorted = { + type: call.type, + from: call.from, + to: call.to, + value: call.value, + gas: call.gas, + gasUsed: call.gasUsed, + input: call.input, + output: call.output, + error: call.error, + time: call.time, + calls: call.calls, + } + for (var key in sorted) { + if (sorted[key] === undefined) { + delete sorted[key]; + } + } + if (sorted.calls !== undefined) { + for (var i=0; i<sorted.calls.length; i++) { + sorted.calls[i] = this.finalize(sorted.calls[i]); + } + } + return sorted; + } +} diff --git a/eth/tracers/internal/tracers/evmdis_tracer.js b/eth/tracers/internal/tracers/evmdis_tracer.js new file mode 100644 index 0000000..bb19777 --- /dev/null +++ b/eth/tracers/internal/tracers/evmdis_tracer.js @@ -0,0 +1,93 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. + +// evmdisTracer returns sufficient information from a trace to perform evmdis-style +// disassembly. +{ + stack: [{ops: []}], + + npushes: {0: 0, 1: 1, 2: 1, 3: 1, 4: 1, 5: 1, 6: 1, 7: 1, 8: 1, 9: 1, 10: 1, 11: 1, 16: 1, 17: 1, 18: 1, 19: 1, 20: 1, 21: 1, 22: 1, 23: 1, 24: 1, 25: 1, 26: 1, 32: 1, 48: 1, 49: 1, 50: 1, 51: 1, 52: 1, 53: 1, 54: 1, 55: 0, 56: 1, 57: 0, 58: 1, 59: 1, 60: 0, 64: 1, 65: 1, 66: 1, 67: 1, 68: 1, 69: 1, 80: 0, 81: 1, 82: 0, 83: 0, 84: 1, 85: 0, 86: 0, 87: 0, 88: 1, 89: 1, 90: 1, 91: 0, 96: 1, 97: 1, 98: 1, 99: 1, 100: 1, 101: 1, 102: 1, 103: 1, 104: 1, 105: 1, 106: 1, 107: 1, 108: 1, 109: 1, 110: 1, 111: 1, 112: 1, 113: 1, 114: 1, 115: 1, 116: 1, 117: 1, 118: 1, 119: 1, 120: 1, 121: 1, 122: 1, 123: 1, 124: 1, 125: 1, 126: 1, 127: 1, 128: 2, 129: 3, 130: 4, 131: 5, 132: 6, 133: 7, 134: 8, 135: 9, 136: 10, 137: 11, 138: 12, 139: 13, 140: 14, 141: 15, 142: 16, 143: 17, 144: 2, 145: 3, 146: 4, 147: 5, 148: 6, 149: 7, 150: 8, 151: 9, 152: 10, 153: 11, 154: 12, 155: 13, 156: 14, 157: 15, 158: 16, 159: 17, 160: 0, 161: 0, 162: 0, 163: 0, 164: 0, 240: 1, 241: 1, 242: 1, 243: 0, 244: 0, 255: 0}, + + // result is invoked when all the opcodes have been iterated over and returns + // the final result of the tracing. + result: function() { return this.stack[0].ops; }, + + // fault is invoked when the actual execution of an opcode fails. + fault: function(log, db) { }, + + // step is invoked for every opcode that the VM executes. + step: function(log, db) { + var frame = this.stack[this.stack.length - 1]; + + var error = log.getError(); + if (error) { + frame["error"] = error; + } else if (log.getDepth() == this.stack.length) { + opinfo = { + op: log.op.toNumber(), + depth : log.getDepth(), + result: [], + }; + if (frame.ops.length > 0) { + var prevop = frame.ops[frame.ops.length - 1]; + for(var i = 0; i < this.npushes[prevop.op]; i++) + prevop.result.push(log.stack.peek(i).toString(16)); + } + switch(log.op.toString()) { + case "CALL": case "CALLCODE": + var instart = log.stack.peek(3).valueOf(); + var insize = log.stack.peek(4).valueOf(); + opinfo["gas"] = log.stack.peek(0).valueOf(); + opinfo["to"] = log.stack.peek(1).toString(16); + opinfo["value"] = log.stack.peek(2).toString(); + opinfo["input"] = log.memory.slice(instart, instart + insize); + opinfo["error"] = null; + opinfo["return"] = null; + opinfo["ops"] = []; + this.stack.push(opinfo); + break; + case "DELEGATECALL": case "STATICCALL": + var instart = log.stack.peek(2).valueOf(); + var insize = log.stack.peek(3).valueOf(); + opinfo["op"] = log.op.toString(); + opinfo["gas"] = log.stack.peek(0).valueOf(); + opinfo["to"] = log.stack.peek(1).toString(16); + opinfo["input"] = log.memory.slice(instart, instart + insize); + opinfo["error"] = null; + opinfo["return"] = null; + opinfo["ops"] = []; + this.stack.push(opinfo); + break; + case "RETURN": + var out = log.stack.peek(0).valueOf(); + var outsize = log.stack.peek(1).valueOf(); + frame.return = log.memory.slice(out, out + outsize); + break; + case "STOP": case "SUICIDE": + frame.return = log.memory.slice(0, 0); + break; + case "JUMPDEST": + opinfo["pc"] = log.getPC(); + } + if(log.op.isPush()) { + opinfo["len"] = log.op.toNumber() - 0x5e; + } + frame.ops.push(opinfo); + } else { + this.stack = this.stack.slice(0, log.getDepth()); + } + } +} diff --git a/eth/tracers/internal/tracers/noop_tracer.js b/eth/tracers/internal/tracers/noop_tracer.js new file mode 100644 index 0000000..fe7ddc8 --- /dev/null +++ b/eth/tracers/internal/tracers/noop_tracer.js @@ -0,0 +1,29 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. + +// noopTracer is just the barebone boilerplate code required from a JavaScript +// object to be usable as a transaction tracer. +{ + // step is invoked for every opcode that the VM executes. + step: function(log, db) { }, + + // fault is invoked when the actual execution of an opcode fails. + fault: function(log, db) { }, + + // result is invoked when all the opcodes have been iterated over and returns + // the final result of the tracing. + result: function(ctx, db) { return {}; } +} diff --git a/eth/tracers/internal/tracers/opcount_tracer.js b/eth/tracers/internal/tracers/opcount_tracer.js new file mode 100644 index 0000000..f7984c7 --- /dev/null +++ b/eth/tracers/internal/tracers/opcount_tracer.js @@ -0,0 +1,32 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. + +// opcountTracer is a sample tracer that just counts the number of instructions +// executed by the EVM before the transaction terminated. +{ + // count tracks the number of EVM instructions executed. + count: 0, + + // step is invoked for every opcode that the VM executes. + step: function(log, db) { this.count++ }, + + // fault is invoked when the actual execution of an opcode fails. + fault: function(log, db) { }, + + // result is invoked when all the opcodes have been iterated over and returns + // the final result of the tracing. + result: function(ctx, db) { return this.count } +} diff --git a/eth/tracers/internal/tracers/prestate_tracer.js b/eth/tracers/internal/tracers/prestate_tracer.js new file mode 100644 index 0000000..e0a22bf --- /dev/null +++ b/eth/tracers/internal/tracers/prestate_tracer.js @@ -0,0 +1,108 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. + +// prestateTracer outputs sufficient information to create a local execution of +// the transaction from a custom assembled genesis block. +{ + // prestate is the genesis that we're building. + prestate: null, + + // lookupAccount injects the specified account into the prestate object. + lookupAccount: function(addr, db){ + var acc = toHex(addr); + if (this.prestate[acc] === undefined) { + this.prestate[acc] = { + balance: '0x' + db.getBalance(addr).toString(16), + nonce: db.getNonce(addr), + code: toHex(db.getCode(addr)), + storage: {} + }; + } + }, + + // lookupStorage injects the specified storage entry of the given account into + // the prestate object. + lookupStorage: function(addr, key, db){ + var acc = toHex(addr); + var idx = toHex(key); + + if (this.prestate[acc].storage[idx] === undefined) { + this.prestate[acc].storage[idx] = toHex(db.getState(addr, key)); + } + }, + + // result is invoked when all the opcodes have been iterated over and returns + // the final result of the tracing. + result: function(ctx, db) { + // At this point, we need to deduct the 'value' from the + // outer transaction, and move it back to the origin + this.lookupAccount(ctx.from, db); + + var fromBal = bigInt(this.prestate[toHex(ctx.from)].balance.slice(2), 16); + var toBal = bigInt(this.prestate[toHex(ctx.to)].balance.slice(2), 16); + + this.prestate[toHex(ctx.to)].balance = '0x'+toBal.subtract(ctx.value).toString(16); + this.prestate[toHex(ctx.from)].balance = '0x'+fromBal.add(ctx.value).toString(16); + + // Decrement the caller's nonce, and remove empty create targets + this.prestate[toHex(ctx.from)].nonce--; + if (ctx.type == 'CREATE') { + // We can blibdly delete the contract prestate, as any existing state would + // have caused the transaction to be rejected as invalid in the first place. + delete this.prestate[toHex(ctx.to)]; + } + // Return the assembled allocations (prestate) + return this.prestate; + }, + + // step is invoked for every opcode that the VM executes. + step: function(log, db) { + // Add the current account if we just started tracing + if (this.prestate === null){ + this.prestate = {}; + // Balance will potentially be wrong here, since this will include the value + // sent along with the message. We fix that in 'result()'. + this.lookupAccount(log.contract.getAddress(), db); + } + // Whenever new state is accessed, add it to the prestate + switch (log.op.toString()) { + case "EXTCODECOPY": case "EXTCODESIZE": case "BALANCE": + this.lookupAccount(toAddress(log.stack.peek(0).toString(16)), db); + break; + case "CREATE": + var from = log.contract.getAddress(); + this.lookupAccount(toContract(from, db.getNonce(from)), db); + break; + case "CREATE2": + var from = log.contract.getAddress(); + // stack: salt, size, offset, endowment + var offset = log.stack.peek(1).valueOf() + var size = log.stack.peek(2).valueOf() + var end = offset + size + this.lookupAccount(toContract2(from, log.stack.peek(3).toString(16), log.memory.slice(offset, end)), db); + break; + case "CALL": case "CALLCODE": case "DELEGATECALL": case "STATICCALL": + this.lookupAccount(toAddress(log.stack.peek(1).toString(16)), db); + break; + case 'SSTORE':case 'SLOAD': + this.lookupStorage(log.contract.getAddress(), toWord(log.stack.peek(0).toString(16)), db); + break; + } + }, + + // fault is invoked when the actual execution of an opcode fails. + fault: function(log, db) {} +} diff --git a/eth/tracers/internal/tracers/tracers.go b/eth/tracers/internal/tracers/tracers.go new file mode 100644 index 0000000..2e40975 --- /dev/null +++ b/eth/tracers/internal/tracers/tracers.go @@ -0,0 +1,21 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. + +//go:generate go-bindata -nometadata -o assets.go -pkg tracers -ignore tracers.go -ignore assets.go ./... +//go:generate gofmt -s -w assets.go + +// Package tracers contains the actual JavaScript tracer assets. +package tracers diff --git a/eth/tracers/internal/tracers/trigram_tracer.js b/eth/tracers/internal/tracers/trigram_tracer.js new file mode 100644 index 0000000..8756490 --- /dev/null +++ b/eth/tracers/internal/tracers/trigram_tracer.js @@ -0,0 +1,49 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. + +{ + // hist is the map of trigram counters + hist: {}, + // lastOp is last operation + lastOps: ['',''], + lastDepth: 0, + // step is invoked for every opcode that the VM executes. + step: function(log, db) { + var depth = log.getDepth(); + if (depth != this.lastDepth){ + this.lastOps = ['','']; + this.lastDepth = depth; + return; + } + var op = log.op.toString(); + var key = this.lastOps[0]+'-'+this.lastOps[1]+'-'+op; + if (this.hist[key]){ + this.hist[key]++; + } + else { + this.hist[key] = 1; + } + this.lastOps[0] = this.lastOps[1]; + this.lastOps[1] = op; + }, + // fault is invoked when the actual execution of an opcode fails. + fault: function(log, db) {}, + // result is invoked when all the opcodes have been iterated over and returns + // the final result of the tracing. + result: function(ctx) { + return this.hist; + }, +} diff --git a/eth/tracers/internal/tracers/unigram_tracer.js b/eth/tracers/internal/tracers/unigram_tracer.js new file mode 100644 index 0000000..000fb13 --- /dev/null +++ b/eth/tracers/internal/tracers/unigram_tracer.js @@ -0,0 +1,43 @@ +// Copyright 2018 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. + +{ + // hist is the map of opcodes to counters + hist: {}, + // nops counts number of ops + nops: 0, + // step is invoked for every opcode that the VM executes. + step: function(log, db) { + var op = log.op.toString(); + if (this.hist[op]){ + this.hist[op]++; + } + else { + this.hist[op] = 1; + } + this.nops++; + }, + // fault is invoked when the actual execution of an opcode fails. + fault: function(log, db) {}, + + // result is invoked when all the opcodes have been iterated over and returns + // the final result of the tracing. + result: function(ctx) { + if(this.nops > 0){ + return this.hist; + } + }, +} diff --git a/eth/tracers/testdata/call_tracer_create.json b/eth/tracers/testdata/call_tracer_create.json new file mode 100644 index 0000000..8699bf3 --- /dev/null +++ b/eth/tracers/testdata/call_tracer_create.json @@ -0,0 +1,58 @@ +{ + "context": { + "difficulty": "3755480783", + "gasLimit": "5401723", + "miner": "0xd049bfd667cb46aa3ef5df0da3e57db3be39e511", + "number": "2294702", + "timestamp": "1513676146" + }, + "genesis": { + "alloc": { + "0x13e4acefe6a6700604929946e70e6443e4e73447": { + "balance": "0xcf3e0938579f000", + "code": "0x", + "nonce": "9", + "storage": {} + }, + "0x7dc9c9730689ff0b0fd506c67db815f12d90a448": { + "balance": "0x0", + "code": "0x", + "nonce": "0", + "storage": {} + } + }, + "config": { + "byzantiumBlock": 1700000, + "chainId": 3, + "daoForkSupport": true, + "eip150Block": 0, + "eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d", + "eip155Block": 10, + "eip158Block": 10, + "ethash": {}, + "homesteadBlock": 0 + }, + "difficulty": "3757315409", + "extraData": "0x566961425443", + "gasLimit": "5406414", + "hash": "0xae107f592eebdd9ff8d6ba00363676096e6afb0e1007a7d3d0af88173077378d", + "miner": "0xd049bfd667cb46aa3ef5df0da3e57db3be39e511", + "mixHash": "0xc927aa05a38bc3de864e95c33b3ae559d3f39c4ccd51cef6f113f9c50ba0caf1", + "nonce": "0x93363bbd2c95f410", + "number": "2294701", + "stateRoot": "0x6b6737d5bde8058990483e915866bd1578014baeff57bd5e4ed228a2bfad635c", + "timestamp": "1513676127", + "totalDifficulty": "7160808139332585" + }, + "input": 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+ "type": "CREATE", + "value": "0x0" + } + ], + "error": "evm: invalid jump destination", + "from": "0xe4a13bc304682a903e9472f469c33801dd18d9e8", + "gas": "0x435c8", + "gasUsed": "0x435c8", + "input": "0x3b91f506000000000000000000000000a14bdd7e5666d784dcce98ad24d383a6b1cd4182000000000000000000000000e4a13bc304682a903e9472f469c33801dd18d9e8", + "to": "0x1d3ddf7caf024f253487e18bc4a15b1a360c170a", + "type": "CALL", + "value": "0x0" + } +} diff --git a/eth/tracers/testdata/call_tracer_inner_throw_outer_revert.json b/eth/tracers/testdata/call_tracer_inner_throw_outer_revert.json new file mode 100644 index 0000000..edd80e5 --- /dev/null +++ b/eth/tracers/testdata/call_tracer_inner_throw_outer_revert.json @@ -0,0 +1,81 @@ +{ + "context": { + "difficulty": "3956606365", + "gasLimit": "5413248", + "miner": "0x00d8ae40d9a06d0e7a2877b62e32eb959afbe16d", + "number": "2295104", + "timestamp": "1513681256" + }, + "genesis": { + "alloc": { + "0x33056b5dcac09a9b4becad0e1dcf92c19bd0af76": { + "balance": 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+ "nonce": "1", + "storage": { + "0x0000000000000000000000000000000000000000000000000000000000000001": "0x0000000000000000000000002cccf5e0538493c235d1c5ef6580f77d99e91396", + "0x0000000000000000000000000000000000000000000000000000000000000002": "0x00000000000000000000000000000000000000000000000000000000000061a9", + "0x0000000000000000000000000000000000000000000000000000000000000005": "0x00000000000000000000000070c9217d814985faef62b124420f8dfbddd96433" + } + } + }, + "config": { + "byzantiumBlock": 1700000, + "chainId": 3, + "daoForkSupport": true, + "eip150Block": 0, + "eip150Hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d", + "eip155Block": 10, + "eip158Block": 10, + "ethash": {}, + "homesteadBlock": 0 + }, + "difficulty": "117066792", + "extraData": "0xd783010502846765746887676f312e372e33856c696e7578", + "gasLimit": "4712388", + "hash": "0xe23e8d4562a1045b70cbc99fefb20c101a8f0fc8559a80d65fea8896e2f1d46e", + "miner": "0x71842f946b98800fe6feb49f0ae4e253259031c9", + "mixHash": "0x0aada9d6e93dd4db0d09c0488dc0a048fca2ccdc1f3fc7b83ba2a8d393a3a4ff", + "nonce": "0x70849d5838dee2e9", + "number": "25008", + "stateRoot": "0x1e01d2161794768c5b917069e73d86e8dca80cd7f3168c0597de420ab93a3b7b", + "timestamp": "1479891641", + "totalDifficulty": "1896347038589" + }, + "input": "0xf88b8206668504a817c8008303d09094c212e03b9e060e36facad5fd8f4435412ca22e6b80a451a34eb8000000000000000000000000000000000000000000000027fad02094277c000029a0692a3b4e7b2842f8dd7832e712c21e09f451f416c8976d5b8d02e8c0c2b4bea9a07645e90fc421b63dd755767fd93d3c03b4ec0c4d8fafa059558d08cf11d59750", + "result": { + "error": "evm: invalid jump destination", + "from": "0x70c9217d814985faef62b124420f8dfbddd96433", + "gas": "0x37b38", + "gasUsed": "0x37b38", + "input": "0x51a34eb8000000000000000000000000000000000000000000000027fad02094277c0000", + "to": "0xc212e03b9e060e36facad5fd8f4435412ca22e6b", + "type": "CALL", + "value": "0x0" + } +} diff --git a/eth/tracers/tracer.go b/eth/tracers/tracer.go new file mode 100644 index 0000000..f2ef25d --- /dev/null +++ b/eth/tracers/tracer.go @@ -0,0 +1,641 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. + +package tracers + +import ( + "encoding/json" + "errors" + "fmt" + "math/big" + "sync/atomic" + "time" + "unsafe" + + "github.com/ava-labs/coreth/core/vm" + "github.com/ava-labs/go-ethereum/common" + "github.com/ava-labs/go-ethereum/common/hexutil" + "github.com/ava-labs/go-ethereum/crypto" + "github.com/ava-labs/go-ethereum/log" + duktape "gopkg.in/olebedev/go-duktape.v3" +) + +// bigIntegerJS is the minified version of https://github.com/peterolson/BigInteger.js. +const bigIntegerJS = `var bigInt=function(undefined){"use strict";var BASE=1e7,LOG_BASE=7,MAX_INT=9007199254740992,MAX_INT_ARR=smallToArray(MAX_INT),LOG_MAX_INT=Math.log(MAX_INT);function Integer(v,radix){if(typeof v==="undefined")return Integer[0];if(typeof radix!=="undefined")return+radix===10?parseValue(v):parseBase(v,radix);return parseValue(v)}function BigInteger(value,sign){this.value=value;this.sign=sign;this.isSmall=false}BigInteger.prototype=Object.create(Integer.prototype);function SmallInteger(value){this.value=value;this.sign=value<0;this.isSmall=true}SmallInteger.prototype=Object.create(Integer.prototype);function isPrecise(n){return-MAX_INT<n&&n<MAX_INT}function smallToArray(n){if(n<1e7)return[n];if(n<1e14)return[n%1e7,Math.floor(n/1e7)];return[n%1e7,Math.floor(n/1e7)%1e7,Math.floor(n/1e14)]}function arrayToSmall(arr){trim(arr);var length=arr.length;if(length<4&&compareAbs(arr,MAX_INT_ARR)<0){switch(length){case 0:return 0;case 1:return arr[0];case 2:return arr[0]+arr[1]*BASE;default:return arr[0]+(arr[1]+arr[2]*BASE)*BASE}}return arr}function trim(v){var i=v.length;while(v[--i]===0);v.length=i+1}function createArray(length){var x=new Array(length);var i=-1;while(++i<length){x[i]=0}return x}function truncate(n){if(n>0)return Math.floor(n);return Math.ceil(n)}function add(a,b){var l_a=a.length,l_b=b.length,r=new Array(l_a),carry=0,base=BASE,sum,i;for(i=0;i<l_b;i++){sum=a[i]+b[i]+carry;carry=sum>=base?1:0;r[i]=sum-carry*base}while(i<l_a){sum=a[i]+carry;carry=sum===base?1:0;r[i++]=sum-carry*base}if(carry>0)r.push(carry);return r}function addAny(a,b){if(a.length>=b.length)return add(a,b);return add(b,a)}function addSmall(a,carry){var l=a.length,r=new Array(l),base=BASE,sum,i;for(i=0;i<l;i++){sum=a[i]-base+carry;carry=Math.floor(sum/base);r[i]=sum-carry*base;carry+=1}while(carry>0){r[i++]=carry%base;carry=Math.floor(carry/base)}return r}BigInteger.prototype.add=function(v){var n=parseValue(v);if(this.sign!==n.sign){return this.subtract(n.negate())}var a=this.value,b=n.value;if(n.isSmall){return new BigInteger(addSmall(a,Math.abs(b)),this.sign)}return new BigInteger(addAny(a,b),this.sign)};BigInteger.prototype.plus=BigInteger.prototype.add;SmallInteger.prototype.add=function(v){var n=parseValue(v);var a=this.value;if(a<0!==n.sign){return this.subtract(n.negate())}var b=n.value;if(n.isSmall){if(isPrecise(a+b))return new SmallInteger(a+b);b=smallToArray(Math.abs(b))}return new BigInteger(addSmall(b,Math.abs(a)),a<0)};SmallInteger.prototype.plus=SmallInteger.prototype.add;function subtract(a,b){var a_l=a.length,b_l=b.length,r=new Array(a_l),borrow=0,base=BASE,i,difference;for(i=0;i<b_l;i++){difference=a[i]-borrow-b[i];if(difference<0){difference+=base;borrow=1}else borrow=0;r[i]=difference}for(i=b_l;i<a_l;i++){difference=a[i]-borrow;if(difference<0)difference+=base;else{r[i++]=difference;break}r[i]=difference}for(;i<a_l;i++){r[i]=a[i]}trim(r);return r}function subtractAny(a,b,sign){var value;if(compareAbs(a,b)>=0){value=subtract(a,b)}else{value=subtract(b,a);sign=!sign}value=arrayToSmall(value);if(typeof value==="number"){if(sign)value=-value;return new SmallInteger(value)}return new BigInteger(value,sign)}function subtractSmall(a,b,sign){var l=a.length,r=new Array(l),carry=-b,base=BASE,i,difference;for(i=0;i<l;i++){difference=a[i]+carry;carry=Math.floor(difference/base);difference%=base;r[i]=difference<0?difference+base:difference}r=arrayToSmall(r);if(typeof r==="number"){if(sign)r=-r;return new SmallInteger(r)}return new BigInteger(r,sign)}BigInteger.prototype.subtract=function(v){var n=parseValue(v);if(this.sign!==n.sign){return this.add(n.negate())}var a=this.value,b=n.value;if(n.isSmall)return subtractSmall(a,Math.abs(b),this.sign);return subtractAny(a,b,this.sign)};BigInteger.prototype.minus=BigInteger.prototype.subtract;SmallInteger.prototype.subtract=function(v){var n=parseValue(v);var a=this.value;if(a<0!==n.sign){return this.add(n.negate())}var b=n.value;if(n.isSmall){return new SmallInteger(a-b)}return subtractSmall(b,Math.abs(a),a>=0)};SmallInteger.prototype.minus=SmallInteger.prototype.subtract;BigInteger.prototype.negate=function(){return new BigInteger(this.value,!this.sign)};SmallInteger.prototype.negate=function(){var sign=this.sign;var small=new SmallInteger(-this.value);small.sign=!sign;return small};BigInteger.prototype.abs=function(){return new BigInteger(this.value,false)};SmallInteger.prototype.abs=function(){return new SmallInteger(Math.abs(this.value))};function multiplyLong(a,b){var a_l=a.length,b_l=b.length,l=a_l+b_l,r=createArray(l),base=BASE,product,carry,i,a_i,b_j;for(i=0;i<a_l;++i){a_i=a[i];for(var j=0;j<b_l;++j){b_j=b[j];product=a_i*b_j+r[i+j];carry=Math.floor(product/base);r[i+j]=product-carry*base;r[i+j+1]+=carry}}trim(r);return r}function multiplySmall(a,b){var l=a.length,r=new Array(l),base=BASE,carry=0,product,i;for(i=0;i<l;i++){product=a[i]*b+carry;carry=Math.floor(product/base);r[i]=product-carry*base}while(carry>0){r[i++]=carry%base;carry=Math.floor(carry/base)}return r}function shiftLeft(x,n){var r=[];while(n-- >0)r.push(0);return r.concat(x)}function multiplyKaratsuba(x,y){var n=Math.max(x.length,y.length);if(n<=30)return multiplyLong(x,y);n=Math.ceil(n/2);var b=x.slice(n),a=x.slice(0,n),d=y.slice(n),c=y.slice(0,n);var ac=multiplyKaratsuba(a,c),bd=multiplyKaratsuba(b,d),abcd=multiplyKaratsuba(addAny(a,b),addAny(c,d));var product=addAny(addAny(ac,shiftLeft(subtract(subtract(abcd,ac),bd),n)),shiftLeft(bd,2*n));trim(product);return product}function useKaratsuba(l1,l2){return-.012*l1-.012*l2+15e-6*l1*l2>0}BigInteger.prototype.multiply=function(v){var n=parseValue(v),a=this.value,b=n.value,sign=this.sign!==n.sign,abs;if(n.isSmall){if(b===0)return Integer[0];if(b===1)return this;if(b===-1)return this.negate();abs=Math.abs(b);if(abs<BASE){return new BigInteger(multiplySmall(a,abs),sign)}b=smallToArray(abs)}if(useKaratsuba(a.length,b.length))return new BigInteger(multiplyKaratsuba(a,b),sign);return new BigInteger(multiplyLong(a,b),sign)};BigInteger.prototype.times=BigInteger.prototype.multiply;function multiplySmallAndArray(a,b,sign){if(a<BASE){return new BigInteger(multiplySmall(b,a),sign)}return new BigInteger(multiplyLong(b,smallToArray(a)),sign)}SmallInteger.prototype._multiplyBySmall=function(a){if(isPrecise(a.value*this.value)){return new SmallInteger(a.value*this.value)}return multiplySmallAndArray(Math.abs(a.value),smallToArray(Math.abs(this.value)),this.sign!==a.sign)};BigInteger.prototype._multiplyBySmall=function(a){if(a.value===0)return Integer[0];if(a.value===1)return this;if(a.value===-1)return this.negate();return multiplySmallAndArray(Math.abs(a.value),this.value,this.sign!==a.sign)};SmallInteger.prototype.multiply=function(v){return parseValue(v)._multiplyBySmall(this)};SmallInteger.prototype.times=SmallInteger.prototype.multiply;function square(a){var l=a.length,r=createArray(l+l),base=BASE,product,carry,i,a_i,a_j;for(i=0;i<l;i++){a_i=a[i];for(var j=0;j<l;j++){a_j=a[j];product=a_i*a_j+r[i+j];carry=Math.floor(product/base);r[i+j]=product-carry*base;r[i+j+1]+=carry}}trim(r);return r}BigInteger.prototype.square=function(){return new BigInteger(square(this.value),false)};SmallInteger.prototype.square=function(){var value=this.value*this.value;if(isPrecise(value))return new SmallInteger(value);return new BigInteger(square(smallToArray(Math.abs(this.value))),false)};function divMod1(a,b){var a_l=a.length,b_l=b.length,base=BASE,result=createArray(b.length),divisorMostSignificantDigit=b[b_l-1],lambda=Math.ceil(base/(2*divisorMostSignificantDigit)),remainder=multiplySmall(a,lambda),divisor=multiplySmall(b,lambda),quotientDigit,shift,carry,borrow,i,l,q;if(remainder.length<=a_l)remainder.push(0);divisor.push(0);divisorMostSignificantDigit=divisor[b_l-1];for(shift=a_l-b_l;shift>=0;shift--){quotientDigit=base-1;if(remainder[shift+b_l]!==divisorMostSignificantDigit){quotientDigit=Math.floor((remainder[shift+b_l]*base+remainder[shift+b_l-1])/divisorMostSignificantDigit)}carry=0;borrow=0;l=divisor.length;for(i=0;i<l;i++){carry+=quotientDigit*divisor[i];q=Math.floor(carry/base);borrow+=remainder[shift+i]-(carry-q*base);carry=q;if(borrow<0){remainder[shift+i]=borrow+base;borrow=-1}else{remainder[shift+i]=borrow;borrow=0}}while(borrow!==0){quotientDigit-=1;carry=0;for(i=0;i<l;i++){carry+=remainder[shift+i]-base+divisor[i];if(carry<0){remainder[shift+i]=carry+base;carry=0}else{remainder[shift+i]=carry;carry=1}}borrow+=carry}result[shift]=quotientDigit}remainder=divModSmall(remainder,lambda)[0];return[arrayToSmall(result),arrayToSmall(remainder)]}function divMod2(a,b){var a_l=a.length,b_l=b.length,result=[],part=[],base=BASE,guess,xlen,highx,highy,check;while(a_l){part.unshift(a[--a_l]);trim(part);if(compareAbs(part,b)<0){result.push(0);continue}xlen=part.length;highx=part[xlen-1]*base+part[xlen-2];highy=b[b_l-1]*base+b[b_l-2];if(xlen>b_l){highx=(highx+1)*base}guess=Math.ceil(highx/highy);do{check=multiplySmall(b,guess);if(compareAbs(check,part)<=0)break;guess--}while(guess);result.push(guess);part=subtract(part,check)}result.reverse();return[arrayToSmall(result),arrayToSmall(part)]}function divModSmall(value,lambda){var length=value.length,quotient=createArray(length),base=BASE,i,q,remainder,divisor;remainder=0;for(i=length-1;i>=0;--i){divisor=remainder*base+value[i];q=truncate(divisor/lambda);remainder=divisor-q*lambda;quotient[i]=q|0}return[quotient,remainder|0]}function divModAny(self,v){var value,n=parseValue(v);var a=self.value,b=n.value;var quotient;if(b===0)throw new Error("Cannot divide by zero");if(self.isSmall){if(n.isSmall){return[new SmallInteger(truncate(a/b)),new SmallInteger(a%b)]}return[Integer[0],self]}if(n.isSmall){if(b===1)return[self,Integer[0]];if(b==-1)return[self.negate(),Integer[0]];var abs=Math.abs(b);if(abs<BASE){value=divModSmall(a,abs);quotient=arrayToSmall(value[0]);var remainder=value[1];if(self.sign)remainder=-remainder;if(typeof quotient==="number"){if(self.sign!==n.sign)quotient=-quotient;return[new SmallInteger(quotient),new SmallInteger(remainder)]}return[new BigInteger(quotient,self.sign!==n.sign),new SmallInteger(remainder)]}b=smallToArray(abs)}var comparison=compareAbs(a,b);if(comparison===-1)return[Integer[0],self];if(comparison===0)return[Integer[self.sign===n.sign?1:-1],Integer[0]];if(a.length+b.length<=200)value=divMod1(a,b);else value=divMod2(a,b);quotient=value[0];var qSign=self.sign!==n.sign,mod=value[1],mSign=self.sign;if(typeof quotient==="number"){if(qSign)quotient=-quotient;quotient=new SmallInteger(quotient)}else quotient=new BigInteger(quotient,qSign);if(typeof mod==="number"){if(mSign)mod=-mod;mod=new SmallInteger(mod)}else mod=new BigInteger(mod,mSign);return[quotient,mod]}BigInteger.prototype.divmod=function(v){var result=divModAny(this,v);return{quotient:result[0],remainder:result[1]}};SmallInteger.prototype.divmod=BigInteger.prototype.divmod;BigInteger.prototype.divide=function(v){return divModAny(this,v)[0]};SmallInteger.prototype.over=SmallInteger.prototype.divide=BigInteger.prototype.over=BigInteger.prototype.divide;BigInteger.prototype.mod=function(v){return divModAny(this,v)[1]};SmallInteger.prototype.remainder=SmallInteger.prototype.mod=BigInteger.prototype.remainder=BigInteger.prototype.mod;BigInteger.prototype.pow=function(v){var n=parseValue(v),a=this.value,b=n.value,value,x,y;if(b===0)return Integer[1];if(a===0)return Integer[0];if(a===1)return Integer[1];if(a===-1)return n.isEven()?Integer[1]:Integer[-1];if(n.sign){return Integer[0]}if(!n.isSmall)throw new Error("The exponent "+n.toString()+" is too large.");if(this.isSmall){if(isPrecise(value=Math.pow(a,b)))return new SmallInteger(truncate(value))}x=this;y=Integer[1];while(true){if(b&1===1){y=y.times(x);--b}if(b===0)break;b/=2;x=x.square()}return y};SmallInteger.prototype.pow=BigInteger.prototype.pow;BigInteger.prototype.modPow=function(exp,mod){exp=parseValue(exp);mod=parseValue(mod);if(mod.isZero())throw new Error("Cannot take modPow with modulus 0");var r=Integer[1],base=this.mod(mod);while(exp.isPositive()){if(base.isZero())return Integer[0];if(exp.isOdd())r=r.multiply(base).mod(mod);exp=exp.divide(2);base=base.square().mod(mod)}return r};SmallInteger.prototype.modPow=BigInteger.prototype.modPow;function compareAbs(a,b){if(a.length!==b.length){return a.length>b.length?1:-1}for(var i=a.length-1;i>=0;i--){if(a[i]!==b[i])return a[i]>b[i]?1:-1}return 0}BigInteger.prototype.compareAbs=function(v){var n=parseValue(v),a=this.value,b=n.value;if(n.isSmall)return 1;return compareAbs(a,b)};SmallInteger.prototype.compareAbs=function(v){var n=parseValue(v),a=Math.abs(this.value),b=n.value;if(n.isSmall){b=Math.abs(b);return a===b?0:a>b?1:-1}return-1};BigInteger.prototype.compare=function(v){if(v===Infinity){return-1}if(v===-Infinity){return 1}var n=parseValue(v),a=this.value,b=n.value;if(this.sign!==n.sign){return n.sign?1:-1}if(n.isSmall){return this.sign?-1:1}return compareAbs(a,b)*(this.sign?-1:1)};BigInteger.prototype.compareTo=BigInteger.prototype.compare;SmallInteger.prototype.compare=function(v){if(v===Infinity){return-1}if(v===-Infinity){return 1}var n=parseValue(v),a=this.value,b=n.value;if(n.isSmall){return a==b?0:a>b?1:-1}if(a<0!==n.sign){return a<0?-1:1}return a<0?1:-1};SmallInteger.prototype.compareTo=SmallInteger.prototype.compare;BigInteger.prototype.equals=function(v){return this.compare(v)===0};SmallInteger.prototype.eq=SmallInteger.prototype.equals=BigInteger.prototype.eq=BigInteger.prototype.equals;BigInteger.prototype.notEquals=function(v){return this.compare(v)!==0};SmallInteger.prototype.neq=SmallInteger.prototype.notEquals=BigInteger.prototype.neq=BigInteger.prototype.notEquals;BigInteger.prototype.greater=function(v){return this.compare(v)>0};SmallInteger.prototype.gt=SmallInteger.prototype.greater=BigInteger.prototype.gt=BigInteger.prototype.greater;BigInteger.prototype.lesser=function(v){return this.compare(v)<0};SmallInteger.prototype.lt=SmallInteger.prototype.lesser=BigInteger.prototype.lt=BigInteger.prototype.lesser;BigInteger.prototype.greaterOrEquals=function(v){return this.compare(v)>=0};SmallInteger.prototype.geq=SmallInteger.prototype.greaterOrEquals=BigInteger.prototype.geq=BigInteger.prototype.greaterOrEquals;BigInteger.prototype.lesserOrEquals=function(v){return this.compare(v)<=0};SmallInteger.prototype.leq=SmallInteger.prototype.lesserOrEquals=BigInteger.prototype.leq=BigInteger.prototype.lesserOrEquals;BigInteger.prototype.isEven=function(){return(this.value[0]&1)===0};SmallInteger.prototype.isEven=function(){return(this.value&1)===0};BigInteger.prototype.isOdd=function(){return(this.value[0]&1)===1};SmallInteger.prototype.isOdd=function(){return(this.value&1)===1};BigInteger.prototype.isPositive=function(){return!this.sign};SmallInteger.prototype.isPositive=function(){return this.value>0};BigInteger.prototype.isNegative=function(){return this.sign};SmallInteger.prototype.isNegative=function(){return this.value<0};BigInteger.prototype.isUnit=function(){return false};SmallInteger.prototype.isUnit=function(){return Math.abs(this.value)===1};BigInteger.prototype.isZero=function(){return false};SmallInteger.prototype.isZero=function(){return this.value===0};BigInteger.prototype.isDivisibleBy=function(v){var n=parseValue(v);var value=n.value;if(value===0)return false;if(value===1)return true;if(value===2)return this.isEven();return this.mod(n).equals(Integer[0])};SmallInteger.prototype.isDivisibleBy=BigInteger.prototype.isDivisibleBy;function isBasicPrime(v){var n=v.abs();if(n.isUnit())return false;if(n.equals(2)||n.equals(3)||n.equals(5))return true;if(n.isEven()||n.isDivisibleBy(3)||n.isDivisibleBy(5))return false;if(n.lesser(25))return true}BigInteger.prototype.isPrime=function(){var isPrime=isBasicPrime(this);if(isPrime!==undefined)return isPrime;var n=this.abs(),nPrev=n.prev();var a=[2,3,5,7,11,13,17,19],b=nPrev,d,t,i,x;while(b.isEven())b=b.divide(2);for(i=0;i<a.length;i++){x=bigInt(a[i]).modPow(b,n);if(x.equals(Integer[1])||x.equals(nPrev))continue;for(t=true,d=b;t&&d.lesser(nPrev);d=d.multiply(2)){x=x.square().mod(n);if(x.equals(nPrev))t=false}if(t)return false}return true};SmallInteger.prototype.isPrime=BigInteger.prototype.isPrime;BigInteger.prototype.isProbablePrime=function(iterations){var isPrime=isBasicPrime(this);if(isPrime!==undefined)return isPrime;var n=this.abs();var t=iterations===undefined?5:iterations;for(var i=0;i<t;i++){var a=bigInt.randBetween(2,n.minus(2));if(!a.modPow(n.prev(),n).isUnit())return false}return true};SmallInteger.prototype.isProbablePrime=BigInteger.prototype.isProbablePrime;BigInteger.prototype.modInv=function(n){var t=bigInt.zero,newT=bigInt.one,r=parseValue(n),newR=this.abs(),q,lastT,lastR;while(!newR.equals(bigInt.zero)){q=r.divide(newR);lastT=t;lastR=r;t=newT;r=newR;newT=lastT.subtract(q.multiply(newT));newR=lastR.subtract(q.multiply(newR))}if(!r.equals(1))throw new Error(this.toString()+" and "+n.toString()+" are not co-prime");if(t.compare(0)===-1){t=t.add(n)}if(this.isNegative()){return t.negate()}return t};SmallInteger.prototype.modInv=BigInteger.prototype.modInv;BigInteger.prototype.next=function(){var value=this.value;if(this.sign){return subtractSmall(value,1,this.sign)}return new BigInteger(addSmall(value,1),this.sign)};SmallInteger.prototype.next=function(){var value=this.value;if(value+1<MAX_INT)return new SmallInteger(value+1);return new BigInteger(MAX_INT_ARR,false)};BigInteger.prototype.prev=function(){var value=this.value;if(this.sign){return new BigInteger(addSmall(value,1),true)}return subtractSmall(value,1,this.sign)};SmallInteger.prototype.prev=function(){var value=this.value;if(value-1>-MAX_INT)return new SmallInteger(value-1);return new BigInteger(MAX_INT_ARR,true)};var powersOfTwo=[1];while(2*powersOfTwo[powersOfTwo.length-1]<=BASE)powersOfTwo.push(2*powersOfTwo[powersOfTwo.length-1]);var powers2Length=powersOfTwo.length,highestPower2=powersOfTwo[powers2Length-1];function shift_isSmall(n){return(typeof n==="number"||typeof n==="string")&&+Math.abs(n)<=BASE||n instanceof BigInteger&&n.value.length<=1}BigInteger.prototype.shiftLeft=function(n){if(!shift_isSmall(n)){throw new Error(String(n)+" is too large for shifting.")}n=+n;if(n<0)return this.shiftRight(-n);var result=this;while(n>=powers2Length){result=result.multiply(highestPower2);n-=powers2Length-1}return result.multiply(powersOfTwo[n])};SmallInteger.prototype.shiftLeft=BigInteger.prototype.shiftLeft;BigInteger.prototype.shiftRight=function(n){var remQuo;if(!shift_isSmall(n)){throw new Error(String(n)+" is too large for shifting.")}n=+n;if(n<0)return this.shiftLeft(-n);var result=this;while(n>=powers2Length){if(result.isZero())return result;remQuo=divModAny(result,highestPower2);result=remQuo[1].isNegative()?remQuo[0].prev():remQuo[0];n-=powers2Length-1}remQuo=divModAny(result,powersOfTwo[n]);return remQuo[1].isNegative()?remQuo[0].prev():remQuo[0]};SmallInteger.prototype.shiftRight=BigInteger.prototype.shiftRight;function bitwise(x,y,fn){y=parseValue(y);var xSign=x.isNegative(),ySign=y.isNegative();var xRem=xSign?x.not():x,yRem=ySign?y.not():y;var xDigit=0,yDigit=0;var xDivMod=null,yDivMod=null;var result=[];while(!xRem.isZero()||!yRem.isZero()){xDivMod=divModAny(xRem,highestPower2);xDigit=xDivMod[1].toJSNumber();if(xSign){xDigit=highestPower2-1-xDigit}yDivMod=divModAny(yRem,highestPower2);yDigit=yDivMod[1].toJSNumber();if(ySign){yDigit=highestPower2-1-yDigit}xRem=xDivMod[0];yRem=yDivMod[0];result.push(fn(xDigit,yDigit))}var sum=fn(xSign?1:0,ySign?1:0)!==0?bigInt(-1):bigInt(0);for(var i=result.length-1;i>=0;i-=1){sum=sum.multiply(highestPower2).add(bigInt(result[i]))}return sum}BigInteger.prototype.not=function(){return this.negate().prev()};SmallInteger.prototype.not=BigInteger.prototype.not;BigInteger.prototype.and=function(n){return bitwise(this,n,function(a,b){return a&b})};SmallInteger.prototype.and=BigInteger.prototype.and;BigInteger.prototype.or=function(n){return bitwise(this,n,function(a,b){return a|b})};SmallInteger.prototype.or=BigInteger.prototype.or;BigInteger.prototype.xor=function(n){return bitwise(this,n,function(a,b){return a^b})};SmallInteger.prototype.xor=BigInteger.prototype.xor;var LOBMASK_I=1<<30,LOBMASK_BI=(BASE&-BASE)*(BASE&-BASE)|LOBMASK_I;function roughLOB(n){var v=n.value,x=typeof v==="number"?v|LOBMASK_I:v[0]+v[1]*BASE|LOBMASK_BI;return x&-x}function max(a,b){a=parseValue(a);b=parseValue(b);return a.greater(b)?a:b}function min(a,b){a=parseValue(a);b=parseValue(b);return a.lesser(b)?a:b}function gcd(a,b){a=parseValue(a).abs();b=parseValue(b).abs();if(a.equals(b))return a;if(a.isZero())return b;if(b.isZero())return a;var c=Integer[1],d,t;while(a.isEven()&&b.isEven()){d=Math.min(roughLOB(a),roughLOB(b));a=a.divide(d);b=b.divide(d);c=c.multiply(d)}while(a.isEven()){a=a.divide(roughLOB(a))}do{while(b.isEven()){b=b.divide(roughLOB(b))}if(a.greater(b)){t=b;b=a;a=t}b=b.subtract(a)}while(!b.isZero());return c.isUnit()?a:a.multiply(c)}function lcm(a,b){a=parseValue(a).abs();b=parseValue(b).abs();return a.divide(gcd(a,b)).multiply(b)}function randBetween(a,b){a=parseValue(a);b=parseValue(b);var low=min(a,b),high=max(a,b);var range=high.subtract(low).add(1);if(range.isSmall)return low.add(Math.floor(Math.random()*range));var length=range.value.length-1;var result=[],restricted=true;for(var i=length;i>=0;i--){var top=restricted?range.value[i]:BASE;var digit=truncate(Math.random()*top);result.unshift(digit);if(digit<top)restricted=false}result=arrayToSmall(result);return low.add(typeof result==="number"?new SmallInteger(result):new BigInteger(result,false))}var parseBase=function(text,base){var length=text.length;var i;var absBase=Math.abs(base);for(var i=0;i<length;i++){var c=text[i].toLowerCase();if(c==="-")continue;if(/[a-z0-9]/.test(c)){if(/[0-9]/.test(c)&&+c>=absBase){if(c==="1"&&absBase===1)continue;throw new Error(c+" is not a valid digit in base "+base+".")}else if(c.charCodeAt(0)-87>=absBase){throw new Error(c+" is not a valid digit in base "+base+".")}}}if(2<=base&&base<=36){if(length<=LOG_MAX_INT/Math.log(base)){var result=parseInt(text,base);if(isNaN(result)){throw new Error(c+" is not a valid digit in base "+base+".")}return new SmallInteger(parseInt(text,base))}}base=parseValue(base);var digits=[];var isNegative=text[0]==="-";for(i=isNegative?1:0;i<text.length;i++){var c=text[i].toLowerCase(),charCode=c.charCodeAt(0);if(48<=charCode&&charCode<=57)digits.push(parseValue(c));else if(97<=charCode&&charCode<=122)digits.push(parseValue(c.charCodeAt(0)-87));else if(c==="<"){var start=i;do{i++}while(text[i]!==">");digits.push(parseValue(text.slice(start+1,i)))}else throw new Error(c+" is not a valid character")}return parseBaseFromArray(digits,base,isNegative)};function parseBaseFromArray(digits,base,isNegative){var val=Integer[0],pow=Integer[1],i;for(i=digits.length-1;i>=0;i--){val=val.add(digits[i].times(pow));pow=pow.times(base)}return isNegative?val.negate():val}function stringify(digit){var v=digit.value;if(typeof v==="number")v=[v];if(v.length===1&&v[0]<=35){return"0123456789abcdefghijklmnopqrstuvwxyz".charAt(v[0])}return"<"+v+">"}function toBase(n,base){base=bigInt(base);if(base.isZero()){if(n.isZero())return"0";throw new Error("Cannot convert nonzero numbers to base 0.")}if(base.equals(-1)){if(n.isZero())return"0";if(n.isNegative())return new Array(1-n).join("10");return"1"+new Array(+n).join("01")}var minusSign="";if(n.isNegative()&&base.isPositive()){minusSign="-";n=n.abs()}if(base.equals(1)){if(n.isZero())return"0";return minusSign+new Array(+n+1).join(1)}var out=[];var left=n,divmod;while(left.isNegative()||left.compareAbs(base)>=0){divmod=left.divmod(base);left=divmod.quotient;var digit=divmod.remainder;if(digit.isNegative()){digit=base.minus(digit).abs();left=left.next()}out.push(stringify(digit))}out.push(stringify(left));return minusSign+out.reverse().join("")}BigInteger.prototype.toString=function(radix){if(radix===undefined)radix=10;if(radix!==10)return toBase(this,radix);var v=this.value,l=v.length,str=String(v[--l]),zeros="0000000",digit;while(--l>=0){digit=String(v[l]);str+=zeros.slice(digit.length)+digit}var sign=this.sign?"-":"";return sign+str};SmallInteger.prototype.toString=function(radix){if(radix===undefined)radix=10;if(radix!=10)return toBase(this,radix);return String(this.value)};BigInteger.prototype.toJSON=SmallInteger.prototype.toJSON=function(){return this.toString()};BigInteger.prototype.valueOf=function(){return+this.toString()};BigInteger.prototype.toJSNumber=BigInteger.prototype.valueOf;SmallInteger.prototype.valueOf=function(){return this.value};SmallInteger.prototype.toJSNumber=SmallInteger.prototype.valueOf;function parseStringValue(v){if(isPrecise(+v)){var x=+v;if(x===truncate(x))return new SmallInteger(x);throw"Invalid integer: "+v}var sign=v[0]==="-";if(sign)v=v.slice(1);var split=v.split(/e/i);if(split.length>2)throw new Error("Invalid integer: "+split.join("e"));if(split.length===2){var exp=split[1];if(exp[0]==="+")exp=exp.slice(1);exp=+exp;if(exp!==truncate(exp)||!isPrecise(exp))throw new Error("Invalid integer: "+exp+" is not a valid exponent.");var text=split[0];var decimalPlace=text.indexOf(".");if(decimalPlace>=0){exp-=text.length-decimalPlace-1;text=text.slice(0,decimalPlace)+text.slice(decimalPlace+1)}if(exp<0)throw new Error("Cannot include negative exponent part for integers");text+=new Array(exp+1).join("0");v=text}var isValid=/^([0-9][0-9]*)$/.test(v);if(!isValid)throw new Error("Invalid integer: "+v);var r=[],max=v.length,l=LOG_BASE,min=max-l;while(max>0){r.push(+v.slice(min,max));min-=l;if(min<0)min=0;max-=l}trim(r);return new BigInteger(r,sign)}function parseNumberValue(v){if(isPrecise(v)){if(v!==truncate(v))throw new Error(v+" is not an integer.");return new SmallInteger(v)}return parseStringValue(v.toString())}function parseValue(v){if(typeof v==="number"){return parseNumberValue(v)}if(typeof v==="string"){return parseStringValue(v)}return v}for(var i=0;i<1e3;i++){Integer[i]=new SmallInteger(i);if(i>0)Integer[-i]=new SmallInteger(-i)}Integer.one=Integer[1];Integer.zero=Integer[0];Integer.minusOne=Integer[-1];Integer.max=max;Integer.min=min;Integer.gcd=gcd;Integer.lcm=lcm;Integer.isInstance=function(x){return x instanceof BigInteger||x instanceof SmallInteger};Integer.randBetween=randBetween;Integer.fromArray=function(digits,base,isNegative){return parseBaseFromArray(digits.map(parseValue),parseValue(base||10),isNegative)};return Integer}();if(typeof module!=="undefined"&&module.hasOwnProperty("exports")){module.exports=bigInt}if(typeof define==="function"&&define.amd){define("big-integer",[],function(){return bigInt})}; bigInt` + +// makeSlice convert an unsafe memory pointer with the given type into a Go byte +// slice. +// +// Note, the returned slice uses the same memory area as the input arguments. +// If those are duktape stack items, popping them off **will** make the slice +// contents change. +func makeSlice(ptr unsafe.Pointer, size uint) []byte { + var sl = struct { + addr uintptr + len int + cap int + }{uintptr(ptr), int(size), int(size)} + + return *(*[]byte)(unsafe.Pointer(&sl)) +} + +// popSlice pops a buffer off the JavaScript stack and returns it as a slice. +func popSlice(ctx *duktape.Context) []byte { + blob := common.CopyBytes(makeSlice(ctx.GetBuffer(-1))) + ctx.Pop() + return blob +} + +// pushBigInt create a JavaScript BigInteger in the VM. +func pushBigInt(n *big.Int, ctx *duktape.Context) { + ctx.GetGlobalString("bigInt") + ctx.PushString(n.String()) + ctx.Call(1) +} + +// opWrapper provides a JavaScript wrapper around OpCode. +type opWrapper struct { + op vm.OpCode +} + +// pushObject assembles a JSVM object wrapping a swappable opcode and pushes it +// onto the VM stack. +func (ow *opWrapper) pushObject(vm *duktape.Context) { + obj := vm.PushObject() + + vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushInt(int(ow.op)); return 1 }) + vm.PutPropString(obj, "toNumber") + + vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushString(ow.op.String()); return 1 }) + vm.PutPropString(obj, "toString") + + vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushBoolean(ow.op.IsPush()); return 1 }) + vm.PutPropString(obj, "isPush") +} + +// memoryWrapper provides a JavaScript wrapper around vm.Memory. +type memoryWrapper struct { + memory *vm.Memory +} + +// slice returns the requested range of memory as a byte slice. +func (mw *memoryWrapper) slice(begin, end int64) []byte { + if mw.memory.Len() < int(end) { + // TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go + // runtime goes belly up https://github.com/golang/go/issues/15639. + log.Warn("Tracer accessed out of bound memory", "available", mw.memory.Len(), "offset", begin, "size", end-begin) + return nil + } + return mw.memory.Get(begin, end-begin) +} + +// getUint returns the 32 bytes at the specified address interpreted as a uint. +func (mw *memoryWrapper) getUint(addr int64) *big.Int { + if mw.memory.Len() < int(addr)+32 { + // TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go + // runtime goes belly up https://github.com/golang/go/issues/15639. + log.Warn("Tracer accessed out of bound memory", "available", mw.memory.Len(), "offset", addr, "size", 32) + return new(big.Int) + } + return new(big.Int).SetBytes(mw.memory.GetPtr(addr, 32)) +} + +// pushObject assembles a JSVM object wrapping a swappable memory and pushes it +// onto the VM stack. +func (mw *memoryWrapper) pushObject(vm *duktape.Context) { + obj := vm.PushObject() + + // Generate the `slice` method which takes two ints and returns a buffer + vm.PushGoFunction(func(ctx *duktape.Context) int { + blob := mw.slice(int64(ctx.GetInt(-2)), int64(ctx.GetInt(-1))) + ctx.Pop2() + + ptr := ctx.PushFixedBuffer(len(blob)) + copy(makeSlice(ptr, uint(len(blob))), blob) + return 1 + }) + vm.PutPropString(obj, "slice") + + // Generate the `getUint` method which takes an int and returns a bigint + vm.PushGoFunction(func(ctx *duktape.Context) int { + offset := int64(ctx.GetInt(-1)) + ctx.Pop() + + pushBigInt(mw.getUint(offset), ctx) + return 1 + }) + vm.PutPropString(obj, "getUint") +} + +// stackWrapper provides a JavaScript wrapper around vm.Stack. +type stackWrapper struct { + stack *vm.Stack +} + +// peek returns the nth-from-the-top element of the stack. +func (sw *stackWrapper) peek(idx int) *big.Int { + if len(sw.stack.Data()) <= idx { + // TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go + // runtime goes belly up https://github.com/golang/go/issues/15639. + log.Warn("Tracer accessed out of bound stack", "size", len(sw.stack.Data()), "index", idx) + return new(big.Int) + } + return sw.stack.Data()[len(sw.stack.Data())-idx-1] +} + +// pushObject assembles a JSVM object wrapping a swappable stack and pushes it +// onto the VM stack. +func (sw *stackWrapper) pushObject(vm *duktape.Context) { + obj := vm.PushObject() + + vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushInt(len(sw.stack.Data())); return 1 }) + vm.PutPropString(obj, "length") + + // Generate the `peek` method which takes an int and returns a bigint + vm.PushGoFunction(func(ctx *duktape.Context) int { + offset := ctx.GetInt(-1) + ctx.Pop() + + pushBigInt(sw.peek(offset), ctx) + return 1 + }) + vm.PutPropString(obj, "peek") +} + +// dbWrapper provides a JavaScript wrapper around vm.Database. +type dbWrapper struct { + db vm.StateDB +} + +// pushObject assembles a JSVM object wrapping a swappable database and pushes it +// onto the VM stack. +func (dw *dbWrapper) pushObject(vm *duktape.Context) { + obj := vm.PushObject() + + // Push the wrapper for statedb.GetBalance + vm.PushGoFunction(func(ctx *duktape.Context) int { + pushBigInt(dw.db.GetBalance(common.BytesToAddress(popSlice(ctx))), ctx) + return 1 + }) + vm.PutPropString(obj, "getBalance") + + // Push the wrapper for statedb.GetNonce + vm.PushGoFunction(func(ctx *duktape.Context) int { + ctx.PushInt(int(dw.db.GetNonce(common.BytesToAddress(popSlice(ctx))))) + return 1 + }) + vm.PutPropString(obj, "getNonce") + + // Push the wrapper for statedb.GetCode + vm.PushGoFunction(func(ctx *duktape.Context) int { + code := dw.db.GetCode(common.BytesToAddress(popSlice(ctx))) + + ptr := ctx.PushFixedBuffer(len(code)) + copy(makeSlice(ptr, uint(len(code))), code) + return 1 + }) + vm.PutPropString(obj, "getCode") + + // Push the wrapper for statedb.GetState + vm.PushGoFunction(func(ctx *duktape.Context) int { + hash := popSlice(ctx) + addr := popSlice(ctx) + + state := dw.db.GetState(common.BytesToAddress(addr), common.BytesToHash(hash)) + + ptr := ctx.PushFixedBuffer(len(state)) + copy(makeSlice(ptr, uint(len(state))), state[:]) + return 1 + }) + vm.PutPropString(obj, "getState") + + // Push the wrapper for statedb.Exists + vm.PushGoFunction(func(ctx *duktape.Context) int { + ctx.PushBoolean(dw.db.Exist(common.BytesToAddress(popSlice(ctx)))) + return 1 + }) + vm.PutPropString(obj, "exists") +} + +// contractWrapper provides a JavaScript wrapper around vm.Contract +type contractWrapper struct { + contract *vm.Contract +} + +// pushObject assembles a JSVM object wrapping a swappable contract and pushes it +// onto the VM stack. +func (cw *contractWrapper) pushObject(vm *duktape.Context) { + obj := vm.PushObject() + + // Push the wrapper for contract.Caller + vm.PushGoFunction(func(ctx *duktape.Context) int { + ptr := ctx.PushFixedBuffer(20) + copy(makeSlice(ptr, 20), cw.contract.Caller().Bytes()) + return 1 + }) + vm.PutPropString(obj, "getCaller") + + // Push the wrapper for contract.Address + vm.PushGoFunction(func(ctx *duktape.Context) int { + ptr := ctx.PushFixedBuffer(20) + copy(makeSlice(ptr, 20), cw.contract.Address().Bytes()) + return 1 + }) + vm.PutPropString(obj, "getAddress") + + // Push the wrapper for contract.Value + vm.PushGoFunction(func(ctx *duktape.Context) int { + pushBigInt(cw.contract.Value(), ctx) + return 1 + }) + vm.PutPropString(obj, "getValue") + + // Push the wrapper for contract.Input + vm.PushGoFunction(func(ctx *duktape.Context) int { + blob := cw.contract.Input + + ptr := ctx.PushFixedBuffer(len(blob)) + copy(makeSlice(ptr, uint(len(blob))), blob) + return 1 + }) + vm.PutPropString(obj, "getInput") +} + +// Tracer provides an implementation of Tracer that evaluates a Javascript +// function for each VM execution step. +type Tracer struct { + inited bool // Flag whether the context was already inited from the EVM + + vm *duktape.Context // Javascript VM instance + + tracerObject int // Stack index of the tracer JavaScript object + stateObject int // Stack index of the global state to pull arguments from + + opWrapper *opWrapper // Wrapper around the VM opcode + stackWrapper *stackWrapper // Wrapper around the VM stack + memoryWrapper *memoryWrapper // Wrapper around the VM memory + contractWrapper *contractWrapper // Wrapper around the contract object + dbWrapper *dbWrapper // Wrapper around the VM environment + + pcValue *uint // Swappable pc value wrapped by a log accessor + gasValue *uint // Swappable gas value wrapped by a log accessor + costValue *uint // Swappable cost value wrapped by a log accessor + depthValue *uint // Swappable depth value wrapped by a log accessor + errorValue *string // Swappable error value wrapped by a log accessor + refundValue *uint // Swappable refund value wrapped by a log accessor + + ctx map[string]interface{} // Transaction context gathered throughout execution + err error // Error, if one has occurred + + interrupt uint32 // Atomic flag to signal execution interruption + reason error // Textual reason for the interruption +} + +// New instantiates a new tracer instance. code specifies a Javascript snippet, +// which must evaluate to an expression returning an object with 'step', 'fault' +// and 'result' functions. +func New(code string) (*Tracer, error) { + // Resolve any tracers by name and assemble the tracer object + if tracer, ok := tracer(code); ok { + code = tracer + } + tracer := &Tracer{ + vm: duktape.New(), + ctx: make(map[string]interface{}), + opWrapper: new(opWrapper), + stackWrapper: new(stackWrapper), + memoryWrapper: new(memoryWrapper), + contractWrapper: new(contractWrapper), + dbWrapper: new(dbWrapper), + pcValue: new(uint), + gasValue: new(uint), + costValue: new(uint), + depthValue: new(uint), + refundValue: new(uint), + } + // Set up builtins for this environment + tracer.vm.PushGlobalGoFunction("toHex", func(ctx *duktape.Context) int { + ctx.PushString(hexutil.Encode(popSlice(ctx))) + return 1 + }) + tracer.vm.PushGlobalGoFunction("toWord", func(ctx *duktape.Context) int { + var word common.Hash + if ptr, size := ctx.GetBuffer(-1); ptr != nil { + word = common.BytesToHash(makeSlice(ptr, size)) + } else { + word = common.HexToHash(ctx.GetString(-1)) + } + ctx.Pop() + copy(makeSlice(ctx.PushFixedBuffer(32), 32), word[:]) + return 1 + }) + tracer.vm.PushGlobalGoFunction("toAddress", func(ctx *duktape.Context) int { + var addr common.Address + if ptr, size := ctx.GetBuffer(-1); ptr != nil { + addr = common.BytesToAddress(makeSlice(ptr, size)) + } else { + addr = common.HexToAddress(ctx.GetString(-1)) + } + ctx.Pop() + copy(makeSlice(ctx.PushFixedBuffer(20), 20), addr[:]) + return 1 + }) + tracer.vm.PushGlobalGoFunction("toContract", func(ctx *duktape.Context) int { + var from common.Address + if ptr, size := ctx.GetBuffer(-2); ptr != nil { + from = common.BytesToAddress(makeSlice(ptr, size)) + } else { + from = common.HexToAddress(ctx.GetString(-2)) + } + nonce := uint64(ctx.GetInt(-1)) + ctx.Pop2() + + contract := crypto.CreateAddress(from, nonce) + copy(makeSlice(ctx.PushFixedBuffer(20), 20), contract[:]) + return 1 + }) + tracer.vm.PushGlobalGoFunction("toContract2", func(ctx *duktape.Context) int { + var from common.Address + if ptr, size := ctx.GetBuffer(-3); ptr != nil { + from = common.BytesToAddress(makeSlice(ptr, size)) + } else { + from = common.HexToAddress(ctx.GetString(-3)) + } + // Retrieve salt hex string from js stack + salt := common.HexToHash(ctx.GetString(-2)) + // Retrieve code slice from js stack + var code []byte + if ptr, size := ctx.GetBuffer(-1); ptr != nil { + code = common.CopyBytes(makeSlice(ptr, size)) + } else { + code = common.FromHex(ctx.GetString(-1)) + } + codeHash := crypto.Keccak256(code) + ctx.Pop3() + contract := crypto.CreateAddress2(from, salt, codeHash) + copy(makeSlice(ctx.PushFixedBuffer(20), 20), contract[:]) + return 1 + }) + tracer.vm.PushGlobalGoFunction("isPrecompiled", func(ctx *duktape.Context) int { + _, ok := vm.PrecompiledContractsIstanbul[common.BytesToAddress(popSlice(ctx))] + ctx.PushBoolean(ok) + return 1 + }) + tracer.vm.PushGlobalGoFunction("slice", func(ctx *duktape.Context) int { + start, end := ctx.GetInt(-2), ctx.GetInt(-1) + ctx.Pop2() + + blob := popSlice(ctx) + size := end - start + + if start < 0 || start > end || end > len(blob) { + // TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go + // runtime goes belly up https://github.com/golang/go/issues/15639. + log.Warn("Tracer accessed out of bound memory", "available", len(blob), "offset", start, "size", size) + ctx.PushFixedBuffer(0) + return 1 + } + copy(makeSlice(ctx.PushFixedBuffer(size), uint(size)), blob[start:end]) + return 1 + }) + // Push the JavaScript tracer as object #0 onto the JSVM stack and validate it + if err := tracer.vm.PevalString("(" + code + ")"); err != nil { + log.Warn("Failed to compile tracer", "err", err) + return nil, err + } + tracer.tracerObject = 0 // yeah, nice, eval can't return the index itself + + if !tracer.vm.GetPropString(tracer.tracerObject, "step") { + return nil, fmt.Errorf("Trace object must expose a function step()") + } + tracer.vm.Pop() + + if !tracer.vm.GetPropString(tracer.tracerObject, "fault") { + return nil, fmt.Errorf("Trace object must expose a function fault()") + } + tracer.vm.Pop() + + if !tracer.vm.GetPropString(tracer.tracerObject, "result") { + return nil, fmt.Errorf("Trace object must expose a function result()") + } + tracer.vm.Pop() + + // Tracer is valid, inject the big int library to access large numbers + tracer.vm.EvalString(bigIntegerJS) + tracer.vm.PutGlobalString("bigInt") + + // Push the global environment state as object #1 into the JSVM stack + tracer.stateObject = tracer.vm.PushObject() + + logObject := tracer.vm.PushObject() + + tracer.opWrapper.pushObject(tracer.vm) + tracer.vm.PutPropString(logObject, "op") + + tracer.stackWrapper.pushObject(tracer.vm) + tracer.vm.PutPropString(logObject, "stack") + + tracer.memoryWrapper.pushObject(tracer.vm) + tracer.vm.PutPropString(logObject, "memory") + + tracer.contractWrapper.pushObject(tracer.vm) + tracer.vm.PutPropString(logObject, "contract") + + tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushUint(*tracer.pcValue); return 1 }) + tracer.vm.PutPropString(logObject, "getPC") + + tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushUint(*tracer.gasValue); return 1 }) + tracer.vm.PutPropString(logObject, "getGas") + + tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushUint(*tracer.costValue); return 1 }) + tracer.vm.PutPropString(logObject, "getCost") + + tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushUint(*tracer.depthValue); return 1 }) + tracer.vm.PutPropString(logObject, "getDepth") + + tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { ctx.PushUint(*tracer.refundValue); return 1 }) + tracer.vm.PutPropString(logObject, "getRefund") + + tracer.vm.PushGoFunction(func(ctx *duktape.Context) int { + if tracer.errorValue != nil { + ctx.PushString(*tracer.errorValue) + } else { + ctx.PushUndefined() + } + return 1 + }) + tracer.vm.PutPropString(logObject, "getError") + + tracer.vm.PutPropString(tracer.stateObject, "log") + + tracer.dbWrapper.pushObject(tracer.vm) + tracer.vm.PutPropString(tracer.stateObject, "db") + + return tracer, nil +} + +// Stop terminates execution of the tracer at the first opportune moment. +func (jst *Tracer) Stop(err error) { + jst.reason = err + atomic.StoreUint32(&jst.interrupt, 1) +} + +// call executes a method on a JS object, catching any errors, formatting and +// returning them as error objects. +func (jst *Tracer) call(method string, args ...string) (json.RawMessage, error) { + // Execute the JavaScript call and return any error + jst.vm.PushString(method) + for _, arg := range args { + jst.vm.GetPropString(jst.stateObject, arg) + } + code := jst.vm.PcallProp(jst.tracerObject, len(args)) + defer jst.vm.Pop() + + if code != 0 { + err := jst.vm.SafeToString(-1) + return nil, errors.New(err) + } + // No error occurred, extract return value and return + return json.RawMessage(jst.vm.JsonEncode(-1)), nil +} + +func wrapError(context string, err error) error { + return fmt.Errorf("%v in server-side tracer function '%v'", err, context) +} + +// CaptureStart implements the Tracer interface to initialize the tracing operation. +func (jst *Tracer) CaptureStart(from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) error { + jst.ctx["type"] = "CALL" + if create { + jst.ctx["type"] = "CREATE" + } + jst.ctx["from"] = from + jst.ctx["to"] = to + jst.ctx["input"] = input + jst.ctx["gas"] = gas + jst.ctx["value"] = value + + return nil +} + +// CaptureState implements the Tracer interface to trace a single step of VM execution. +func (jst *Tracer) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, memory *vm.Memory, stack *vm.Stack, contract *vm.Contract, depth int, err error) error { + if jst.err == nil { + // Initialize the context if it wasn't done yet + if !jst.inited { + jst.ctx["block"] = env.BlockNumber.Uint64() + jst.inited = true + } + // If tracing was interrupted, set the error and stop + if atomic.LoadUint32(&jst.interrupt) > 0 { + jst.err = jst.reason + return nil + } + jst.opWrapper.op = op + jst.stackWrapper.stack = stack + jst.memoryWrapper.memory = memory + jst.contractWrapper.contract = contract + jst.dbWrapper.db = env.StateDB + + *jst.pcValue = uint(pc) + *jst.gasValue = uint(gas) + *jst.costValue = uint(cost) + *jst.depthValue = uint(depth) + *jst.refundValue = uint(env.StateDB.GetRefund()) + + jst.errorValue = nil + if err != nil { + jst.errorValue = new(string) + *jst.errorValue = err.Error() + } + _, err := jst.call("step", "log", "db") + if err != nil { + jst.err = wrapError("step", err) + } + } + return nil +} + +// CaptureFault implements the Tracer interface to trace an execution fault +// while running an opcode. +func (jst *Tracer) CaptureFault(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, memory *vm.Memory, stack *vm.Stack, contract *vm.Contract, depth int, err error) error { + if jst.err == nil { + // Apart from the error, everything matches the previous invocation + jst.errorValue = new(string) + *jst.errorValue = err.Error() + + _, err := jst.call("fault", "log", "db") + if err != nil { + jst.err = wrapError("fault", err) + } + } + return nil +} + +// CaptureEnd is called after the call finishes to finalize the tracing. +func (jst *Tracer) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) error { + jst.ctx["output"] = output + jst.ctx["gasUsed"] = gasUsed + jst.ctx["time"] = t.String() + + if err != nil { + jst.ctx["error"] = err.Error() + } + return nil +} + +// GetResult calls the Javascript 'result' function and returns its value, or any accumulated error +func (jst *Tracer) GetResult() (json.RawMessage, error) { + // Transform the context into a JavaScript object and inject into the state + obj := jst.vm.PushObject() + + for key, val := range jst.ctx { + switch val := val.(type) { + case uint64: + jst.vm.PushUint(uint(val)) + + case string: + jst.vm.PushString(val) + + case []byte: + ptr := jst.vm.PushFixedBuffer(len(val)) + copy(makeSlice(ptr, uint(len(val))), val) + + case common.Address: + ptr := jst.vm.PushFixedBuffer(20) + copy(makeSlice(ptr, 20), val[:]) + + case *big.Int: + pushBigInt(val, jst.vm) + + default: + panic(fmt.Sprintf("unsupported type: %T", val)) + } + jst.vm.PutPropString(obj, key) + } + jst.vm.PutPropString(jst.stateObject, "ctx") + + // Finalize the trace and return the results + result, err := jst.call("result", "ctx", "db") + if err != nil { + jst.err = wrapError("result", err) + } + // Clean up the JavaScript environment + jst.vm.DestroyHeap() + jst.vm.Destroy() + + return result, jst.err +} diff --git a/eth/tracers/tracers.go b/eth/tracers/tracers.go new file mode 100644 index 0000000..475ebd2 --- /dev/null +++ b/eth/tracers/tracers.go @@ -0,0 +1,53 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. + +// Package tracers is a collection of JavaScript transaction tracers. +package tracers + +import ( + "strings" + "unicode" + + "github.com/ava-labs/coreth/eth/tracers/internal/tracers" +) + +// all contains all the built in JavaScript tracers by name. +var all = make(map[string]string) + +// camel converts a snake cased input string into a camel cased output. +func camel(str string) string { + pieces := strings.Split(str, "_") + for i := 1; i < len(pieces); i++ { + pieces[i] = string(unicode.ToUpper(rune(pieces[i][0]))) + pieces[i][1:] + } + return strings.Join(pieces, "") +} + +// init retrieves the JavaScript transaction tracers included in go-ethereum. +func init() { + for _, file := range tracers.AssetNames() { + name := camel(strings.TrimSuffix(file, ".js")) + all[name] = string(tracers.MustAsset(file)) + } +} + +// tracer retrieves a specific JavaScript tracer by name. +func tracer(name string) (string, bool) { + if tracer, ok := all[name]; ok { + return tracer, true + } + return "", false +} |