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tests/fuzzers/les: add fuzzer for les server handler (#22282)

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* les: refactored server handler

* tests/fuzzers/les: add fuzzer for les server handler

* tests, les: update les fuzzer

tests: update les fuzzer

tests/fuzzer/les: release resources

tests/fuzzer/les: pre-initialize all resources

* les: refactored server handler and fuzzer

Co-authored-by: rjl493456442 <garyrong0905@gmail.com>
This commit is contained in:
Felföldi Zsolt 2021-02-20 10:40:38 +01:00 committed by GitHub
parent 8647233a8e
commit 8f03e3b107
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
9 changed files with 1226 additions and 695 deletions
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34
les/handler_test.go
View File

@ -65,27 +65,27 @@ func testGetBlockHeaders(t *testing.T, protocol int) {
// Create a batch of tests for various scenarios
limit := uint64(MaxHeaderFetch)
tests := []struct {
query *getBlockHeadersData // The query to execute for header retrieval
query *GetBlockHeadersData // The query to execute for header retrieval
expect []common.Hash // The hashes of the block whose headers are expected
}{
// A single random block should be retrievable by hash and number too
{
&getBlockHeadersData{Origin: hashOrNumber{Hash: bc.GetBlockByNumber(limit / 2).Hash()}, Amount: 1},
&GetBlockHeadersData{Origin: hashOrNumber{Hash: bc.GetBlockByNumber(limit / 2).Hash()}, Amount: 1},
[]common.Hash{bc.GetBlockByNumber(limit / 2).Hash()},
}, {
&getBlockHeadersData{Origin: hashOrNumber{Number: limit / 2}, Amount: 1},
&GetBlockHeadersData{Origin: hashOrNumber{Number: limit / 2}, Amount: 1},
[]common.Hash{bc.GetBlockByNumber(limit / 2).Hash()},
},
// Multiple headers should be retrievable in both directions
{
&getBlockHeadersData{Origin: hashOrNumber{Number: limit / 2}, Amount: 3},
&GetBlockHeadersData{Origin: hashOrNumber{Number: limit / 2}, Amount: 3},
[]common.Hash{
bc.GetBlockByNumber(limit / 2).Hash(),
bc.GetBlockByNumber(limit/2 + 1).Hash(),
bc.GetBlockByNumber(limit/2 + 2).Hash(),
},
}, {
&getBlockHeadersData{Origin: hashOrNumber{Number: limit / 2}, Amount: 3, Reverse: true},
&GetBlockHeadersData{Origin: hashOrNumber{Number: limit / 2}, Amount: 3, Reverse: true},
[]common.Hash{
bc.GetBlockByNumber(limit / 2).Hash(),
bc.GetBlockByNumber(limit/2 - 1).Hash(),
@ -94,14 +94,14 @@ func testGetBlockHeaders(t *testing.T, protocol int) {
},
// Multiple headers with skip lists should be retrievable
{
&getBlockHeadersData{Origin: hashOrNumber{Number: limit / 2}, Skip: 3, Amount: 3},
&GetBlockHeadersData{Origin: hashOrNumber{Number: limit / 2}, Skip: 3, Amount: 3},
[]common.Hash{
bc.GetBlockByNumber(limit / 2).Hash(),
bc.GetBlockByNumber(limit/2 + 4).Hash(),
bc.GetBlockByNumber(limit/2 + 8).Hash(),
},
}, {
&getBlockHeadersData{Origin: hashOrNumber{Number: limit / 2}, Skip: 3, Amount: 3, Reverse: true},
&GetBlockHeadersData{Origin: hashOrNumber{Number: limit / 2}, Skip: 3, Amount: 3, Reverse: true},
[]common.Hash{
bc.GetBlockByNumber(limit / 2).Hash(),
bc.GetBlockByNumber(limit/2 - 4).Hash(),
@ -110,26 +110,26 @@ func testGetBlockHeaders(t *testing.T, protocol int) {
},
// The chain endpoints should be retrievable
{
&getBlockHeadersData{Origin: hashOrNumber{Number: 0}, Amount: 1},
&GetBlockHeadersData{Origin: hashOrNumber{Number: 0}, Amount: 1},
[]common.Hash{bc.GetBlockByNumber(0).Hash()},
}, {
&getBlockHeadersData{Origin: hashOrNumber{Number: bc.CurrentBlock().NumberU64()}, Amount: 1},
&GetBlockHeadersData{Origin: hashOrNumber{Number: bc.CurrentBlock().NumberU64()}, Amount: 1},
[]common.Hash{bc.CurrentBlock().Hash()},
},
// Ensure protocol limits are honored
//{
// &getBlockHeadersData{Origin: hashOrNumber{Number: bc.CurrentBlock().NumberU64() - 1}, Amount: limit + 10, Reverse: true},
// &GetBlockHeadersData{Origin: hashOrNumber{Number: bc.CurrentBlock().NumberU64() - 1}, Amount: limit + 10, Reverse: true},
// []common.Hash{},
//},
// Check that requesting more than available is handled gracefully
{
&getBlockHeadersData{Origin: hashOrNumber{Number: bc.CurrentBlock().NumberU64() - 4}, Skip: 3, Amount: 3},
&GetBlockHeadersData{Origin: hashOrNumber{Number: bc.CurrentBlock().NumberU64() - 4}, Skip: 3, Amount: 3},
[]common.Hash{
bc.GetBlockByNumber(bc.CurrentBlock().NumberU64() - 4).Hash(),
bc.GetBlockByNumber(bc.CurrentBlock().NumberU64()).Hash(),
},
}, {
&getBlockHeadersData{Origin: hashOrNumber{Number: 4}, Skip: 3, Amount: 3, Reverse: true},
&GetBlockHeadersData{Origin: hashOrNumber{Number: 4}, Skip: 3, Amount: 3, Reverse: true},
[]common.Hash{
bc.GetBlockByNumber(4).Hash(),
bc.GetBlockByNumber(0).Hash(),
@ -137,13 +137,13 @@ func testGetBlockHeaders(t *testing.T, protocol int) {
},
// Check that requesting more than available is handled gracefully, even if mid skip
{
&getBlockHeadersData{Origin: hashOrNumber{Number: bc.CurrentBlock().NumberU64() - 4}, Skip: 2, Amount: 3},
&GetBlockHeadersData{Origin: hashOrNumber{Number: bc.CurrentBlock().NumberU64() - 4}, Skip: 2, Amount: 3},
[]common.Hash{
bc.GetBlockByNumber(bc.CurrentBlock().NumberU64() - 4).Hash(),
bc.GetBlockByNumber(bc.CurrentBlock().NumberU64() - 1).Hash(),
},
}, {
&getBlockHeadersData{Origin: hashOrNumber{Number: 4}, Skip: 2, Amount: 3, Reverse: true},
&GetBlockHeadersData{Origin: hashOrNumber{Number: 4}, Skip: 2, Amount: 3, Reverse: true},
[]common.Hash{
bc.GetBlockByNumber(4).Hash(),
bc.GetBlockByNumber(1).Hash(),
@ -151,10 +151,10 @@ func testGetBlockHeaders(t *testing.T, protocol int) {
},
// Check that non existing headers aren't returned
{
&getBlockHeadersData{Origin: hashOrNumber{Hash: unknown}, Amount: 1},
&GetBlockHeadersData{Origin: hashOrNumber{Hash: unknown}, Amount: 1},
[]common.Hash{},
}, {
&getBlockHeadersData{Origin: hashOrNumber{Number: bc.CurrentBlock().NumberU64() + 1}, Amount: 1},
&GetBlockHeadersData{Origin: hashOrNumber{Number: bc.CurrentBlock().NumberU64() + 1}, Amount: 1},
[]common.Hash{},
},
}
@ -619,7 +619,7 @@ func TestStopResumeLes3(t *testing.T) {
header := server.handler.blockchain.CurrentHeader()
req := func() {
reqID++
sendRequest(server.peer.app, GetBlockHeadersMsg, reqID, &getBlockHeadersData{Origin: hashOrNumber{Hash: header.Hash()}, Amount: 1})
sendRequest(server.peer.app, GetBlockHeadersMsg, reqID, &GetBlockHeadersData{Origin: hashOrNumber{Hash: header.Hash()}, Amount: 1})
}
for i := 1; i <= 5; i++ {
// send requests while we still have enough buffer and expect a response

4
les/peer.go
View File

@ -432,14 +432,14 @@ func (p *serverPeer) sendRequest(msgcode, reqID uint64, data interface{}, amount
// specified header query, based on the hash of an origin block.
func (p *serverPeer) requestHeadersByHash(reqID uint64, 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 p.sendRequest(GetBlockHeadersMsg, reqID, &getBlockHeadersData{Origin: hashOrNumber{Hash: origin}, Amount: uint64(amount), Skip: uint64(skip), Reverse: reverse}, amount)
return p.sendRequest(GetBlockHeadersMsg, reqID, &GetBlockHeadersData{Origin: hashOrNumber{Hash: origin}, Amount: uint64(amount), Skip: uint64(skip), Reverse: reverse}, amount)
}
// requestHeadersByNumber fetches a batch of blocks' headers corresponding to the
// specified header query, based on the number of an origin block.
func (p *serverPeer) requestHeadersByNumber(reqID, 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 p.sendRequest(GetBlockHeadersMsg, reqID, &getBlockHeadersData{Origin: hashOrNumber{Number: origin}, Amount: uint64(amount), Skip: uint64(skip), Reverse: reverse}, amount)
return p.sendRequest(GetBlockHeadersMsg, reqID, &GetBlockHeadersData{Origin: hashOrNumber{Number: origin}, Amount: uint64(amount), Skip: uint64(skip), Reverse: reverse}, amount)
}
// requestBodies fetches a batch of blocks' bodies corresponding to the hashes

65
les/protocol.go
View File

@ -24,6 +24,7 @@ import (
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
vfc "github.com/ethereum/go-ethereum/les/vflux/client"
"github.com/ethereum/go-ethereum/p2p/enode"
@ -83,6 +84,62 @@ const (
ResumeMsg = 0x17
)
// GetBlockHeadersData represents a block header query (the request ID is not included)
type GetBlockHeadersData struct {
Origin hashOrNumber // Block from which to retrieve headers
Amount uint64 // Maximum number of headers to retrieve
Skip uint64 // Blocks to skip between consecutive headers
Reverse bool // Query direction (false = rising towards latest, true = falling towards genesis)
}
// GetBlockHeadersPacket represents a block header request
type GetBlockHeadersPacket struct {
ReqID uint64
Query GetBlockHeadersData
}
// GetBlockBodiesPacket represents a block body request
type GetBlockBodiesPacket struct {
ReqID uint64
Hashes []common.Hash
}
// GetCodePacket represents a contract code request
type GetCodePacket struct {
ReqID uint64
Reqs []CodeReq
}
// GetReceiptsPacket represents a block receipts request
type GetReceiptsPacket struct {
ReqID uint64
Hashes []common.Hash
}
// GetProofsPacket represents a proof request
type GetProofsPacket struct {
ReqID uint64
Reqs []ProofReq
}
// GetHelperTrieProofsPacket represents a helper trie proof request
type GetHelperTrieProofsPacket struct {
ReqID uint64
Reqs []HelperTrieReq
}
// SendTxPacket represents a transaction propagation request
type SendTxPacket struct {
ReqID uint64
Txs []*types.Transaction
}
// GetTxStatusPacket represents a transaction status query
type GetTxStatusPacket struct {
ReqID uint64
Hashes []common.Hash
}
type requestInfo struct {
name string
maxCount uint64
@ -229,14 +286,6 @@ type blockInfo struct {
Td *big.Int // Total difficulty of one particular block being announced
}
// getBlockHeadersData represents a block header query.
type getBlockHeadersData struct {
Origin hashOrNumber // Block from which to retrieve headers
Amount uint64 // Maximum number of headers to retrieve
Skip uint64 // Blocks to skip between consecutive headers
Reverse bool // Query direction (false = rising towards latest, true = falling towards genesis)
}
// hashOrNumber is a combined field for specifying an origin block.
type hashOrNumber struct {
Hash common.Hash // Block hash from which to retrieve headers (excludes Number)

682
les/server_handler.go
View File

@ -18,8 +18,6 @@ package les
import (
"crypto/ecdsa"
"encoding/binary"
"encoding/json"
"errors"
"sync"
"sync/atomic"
@ -223,29 +221,42 @@ func (h *serverHandler) handleMsg(p *clientPeer, wg *sync.WaitGroup) error {
}
defer msg.Discard()
var (
maxCost uint64
task *servingTask
)
p.responseCount++
responseCount := p.responseCount
// accept returns an indicator whether the request can be served.
// If so, deduct the max cost from the flow control buffer.
accept := func(reqID, reqCnt, maxCnt uint64) bool {
req, ok := Les3[msg.Code]
if !ok {
p.Log().Trace("Received invalid message", "code", msg.Code)
clientErrorMeter.Mark(1)
return errResp(ErrInvalidMsgCode, "%v", msg.Code)
}
p.Log().Trace("Received " + req.Name)
serve, reqID, reqCnt, err := req.Handle(msg)
if err != nil {
clientErrorMeter.Mark(1)
return errResp(ErrDecode, "%v: %v", msg, err)
}
if metrics.EnabledExpensive {
req.InPacketsMeter.Mark(1)
req.InTrafficMeter.Mark(int64(msg.Size))
}
// Short circuit if the peer is already frozen or the request is invalid.
inSizeCost := h.server.costTracker.realCost(0, msg.Size, 0)
if p.isFrozen() || reqCnt == 0 || reqCnt > maxCnt {
if p.isFrozen() || reqCnt == 0 || reqCnt > req.MaxCount {
p.fcClient.OneTimeCost(inSizeCost)
return false
return nil
}
// Prepaid max cost units before request been serving.
maxCost = p.fcCosts.getMaxCost(msg.Code, reqCnt)
maxCost := p.fcCosts.getMaxCost(msg.Code, reqCnt)
accepted, bufShort, priority := p.fcClient.AcceptRequest(reqID, responseCount, maxCost)
if !accepted {
p.freeze()
p.Log().Error("Request came too early", "remaining", common.PrettyDuration(time.Duration(bufShort*1000000/p.fcParams.MinRecharge)))
p.fcClient.OneTimeCost(inSizeCost)
return false
return nil
}
// Create a multi-stage task, estimate the time it takes for the task to
// execute, and cache it in the request service queue.
@ -255,21 +266,22 @@ func (h *serverHandler) handleMsg(p *clientPeer, wg *sync.WaitGroup) error {
p.Log().Error("Invalid global cost factor", "factor", factor)
}
maxTime := uint64(float64(maxCost) / factor)
task = h.server.servingQueue.newTask(p, maxTime, priority)
task := h.server.servingQueue.newTask(p, maxTime, priority)
if task.start() {
return true
wg.Add(1)
go func() {
defer wg.Done()
reply := serve(h, p, task.waitOrStop)
if reply != nil {
task.done()
}
p.fcClient.RequestProcessed(reqID, responseCount, maxCost, inSizeCost)
return false
}
// sendResponse sends back the response and updates the flow control statistic.
sendResponse := func(reqID, amount uint64, reply *reply, servingTime uint64) {
p.responseLock.Lock()
defer p.responseLock.Unlock()
// Short circuit if the client is already frozen.
if p.isFrozen() {
realCost := h.server.costTracker.realCost(servingTime, msg.Size, 0)
realCost := h.server.costTracker.realCost(task.servingTime, msg.Size, 0)
p.fcClient.RequestProcessed(reqID, responseCount, maxCost, realCost)
return
}
@ -282,19 +294,17 @@ func (h *serverHandler) handleMsg(p *clientPeer, wg *sync.WaitGroup) error {
if h.server.costTracker.testing {
realCost = maxCost // Assign a fake cost for testing purpose
} else {
realCost = h.server.costTracker.realCost(servingTime, msg.Size, replySize)
realCost = h.server.costTracker.realCost(task.servingTime, msg.Size, replySize)
if realCost > maxCost {
realCost = maxCost
}
}
bv := p.fcClient.RequestProcessed(reqID, responseCount, maxCost, realCost)
if amount != 0 {
if reply != nil {
// Feed cost tracker request serving statistic.
h.server.costTracker.updateStats(msg.Code, amount, servingTime, realCost)
h.server.costTracker.updateStats(msg.Code, reqCnt, task.servingTime, realCost)
// Reduce priority "balance" for the specific peer.
p.balance.RequestServed(realCost)
}
if reply != nil {
p.queueSend(func() {
if err := reply.send(bv); err != nil {
select {
@ -303,568 +313,17 @@ func (h *serverHandler) handleMsg(p *clientPeer, wg *sync.WaitGroup) error {
}
}
})
}
}
switch msg.Code {
case GetBlockHeadersMsg:
p.Log().Trace("Received block header request")
if metrics.EnabledExpensive {
miscInHeaderPacketsMeter.Mark(1)
miscInHeaderTrafficMeter.Mark(int64(msg.Size))
req.OutPacketsMeter.Mark(1)
req.OutTrafficMeter.Mark(int64(replySize))
req.ServingTimeMeter.Update(time.Duration(task.servingTime))
}
var req struct {
ReqID uint64
Query getBlockHeadersData
}
if err := msg.Decode(&req); err != nil {
clientErrorMeter.Mark(1)
return errResp(ErrDecode, "%v: %v", msg, err)
}
query := req.Query
if accept(req.ReqID, query.Amount, MaxHeaderFetch) {
wg.Add(1)
go func() {
defer wg.Done()
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 {
if !first && !task.waitOrStop() {
sendResponse(req.ReqID, 0, nil, task.servingTime)
return
}
// Retrieve the next header satisfying the query
var origin *types.Header
if hashMode {
if first {
origin = h.blockchain.GetHeaderByHash(query.Origin.Hash)
if origin != nil {
query.Origin.Number = origin.Number.Uint64()
}
} else {
origin = h.blockchain.GetHeader(query.Origin.Hash, query.Origin.Number)
}
} else {
origin = h.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 = h.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 := h.blockchain.GetHeaderByNumber(next); header != nil {
nextHash := header.Hash()
expOldHash, _ := h.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
}
first = false
}
reply := p.replyBlockHeaders(req.ReqID, headers)
sendResponse(req.ReqID, query.Amount, reply, task.done())
if metrics.EnabledExpensive {
miscOutHeaderPacketsMeter.Mark(1)
miscOutHeaderTrafficMeter.Mark(int64(reply.size()))
miscServingTimeHeaderTimer.Update(time.Duration(task.servingTime))
}
}()
}
case GetBlockBodiesMsg:
p.Log().Trace("Received block bodies request")
if metrics.EnabledExpensive {
miscInBodyPacketsMeter.Mark(1)
miscInBodyTrafficMeter.Mark(int64(msg.Size))
}
var req struct {
ReqID uint64
Hashes []common.Hash
}
if err := msg.Decode(&req); err != nil {
clientErrorMeter.Mark(1)
return errResp(ErrDecode, "msg %v: %v", msg, err)
}
var (
bytes int
bodies []rlp.RawValue
)
reqCnt := len(req.Hashes)
if accept(req.ReqID, uint64(reqCnt), MaxBodyFetch) {
wg.Add(1)
go func() {
defer wg.Done()
for i, hash := range req.Hashes {
if i != 0 && !task.waitOrStop() {
sendResponse(req.ReqID, 0, nil, task.servingTime)
return
}
if bytes >= softResponseLimit {
break
}
body := h.blockchain.GetBodyRLP(hash)
if body == nil {
p.bumpInvalid()
continue
}
bodies = append(bodies, body)
bytes += len(body)
}
reply := p.replyBlockBodiesRLP(req.ReqID, bodies)
sendResponse(req.ReqID, uint64(reqCnt), reply, task.done())
if metrics.EnabledExpensive {
miscOutBodyPacketsMeter.Mark(1)
miscOutBodyTrafficMeter.Mark(int64(reply.size()))
miscServingTimeBodyTimer.Update(time.Duration(task.servingTime))
}
}()
}
case GetCodeMsg:
p.Log().Trace("Received code request")
if metrics.EnabledExpensive {
miscInCodePacketsMeter.Mark(1)
miscInCodeTrafficMeter.Mark(int64(msg.Size))
}
var req struct {
ReqID uint64
Reqs []CodeReq
}
if err := msg.Decode(&req); err != nil {
clientErrorMeter.Mark(1)
return errResp(ErrDecode, "msg %v: %v", msg, err)
}
var (
bytes int
data [][]byte
)
reqCnt := len(req.Reqs)
if accept(req.ReqID, uint64(reqCnt), MaxCodeFetch) {
wg.Add(1)
go func() {
defer wg.Done()
for i, request := range req.Reqs {
if i != 0 && !task.waitOrStop() {
sendResponse(req.ReqID, 0, nil, task.servingTime)
return
}
// Look up the root hash belonging to the request
header := h.blockchain.GetHeaderByHash(request.BHash)
if header == nil {
p.Log().Warn("Failed to retrieve associate header for code", "hash", request.BHash)
p.bumpInvalid()
continue
}
// Refuse to search stale state data in the database since looking for
// a non-exist key is kind of expensive.
local := h.blockchain.CurrentHeader().Number.Uint64()
if !h.server.archiveMode && header.Number.Uint64()+core.TriesInMemory <= local {
p.Log().Debug("Reject stale code request", "number", header.Number.Uint64(), "head", local)
p.bumpInvalid()
continue
}
triedb := h.blockchain.StateCache().TrieDB()
account, err := h.getAccount(triedb, header.Root, common.BytesToHash(request.AccKey))
if err != nil {
p.Log().Warn("Failed to retrieve account for code", "block", header.Number, "hash", header.Hash(), "account", common.BytesToHash(request.AccKey), "err", err)
p.bumpInvalid()
continue
}
code, err := h.blockchain.StateCache().ContractCode(common.BytesToHash(request.AccKey), common.BytesToHash(account.CodeHash))
if err != nil {
p.Log().Warn("Failed to retrieve account code", "block", header.Number, "hash", header.Hash(), "account", common.BytesToHash(request.AccKey), "codehash", common.BytesToHash(account.CodeHash), "err", err)
continue
}
// Accumulate the code and abort if enough data was retrieved
data = append(data, code)
if bytes += len(code); bytes >= softResponseLimit {
break
}
}
reply := p.replyCode(req.ReqID, data)
sendResponse(req.ReqID, uint64(reqCnt), reply, task.done())
if metrics.EnabledExpensive {
miscOutCodePacketsMeter.Mark(1)
miscOutCodeTrafficMeter.Mark(int64(reply.size()))
miscServingTimeCodeTimer.Update(time.Duration(task.servingTime))
}
}()
}
case GetReceiptsMsg:
p.Log().Trace("Received receipts request")
if metrics.EnabledExpensive {
miscInReceiptPacketsMeter.Mark(1)
miscInReceiptTrafficMeter.Mark(int64(msg.Size))
}
var req struct {
ReqID uint64
Hashes []common.Hash
}
if err := msg.Decode(&req); err != nil {
clientErrorMeter.Mark(1)
return errResp(ErrDecode, "msg %v: %v", msg, err)
}
var (
bytes int
receipts []rlp.RawValue
)
reqCnt := len(req.Hashes)
if accept(req.ReqID, uint64(reqCnt), MaxReceiptFetch) {
wg.Add(1)
go func() {
defer wg.Done()
for i, hash := range req.Hashes {
if i != 0 && !task.waitOrStop() {
sendResponse(req.ReqID, 0, nil, task.servingTime)
return
}
if bytes >= softResponseLimit {
break
}
// Retrieve the requested block's receipts, skipping if unknown to us
results := h.blockchain.GetReceiptsByHash(hash)
if results == nil {
if header := h.blockchain.GetHeaderByHash(hash); header == nil || header.ReceiptHash != types.EmptyRootHash {
p.bumpInvalid()
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)
}
}
reply := p.replyReceiptsRLP(req.ReqID, receipts)
sendResponse(req.ReqID, uint64(reqCnt), reply, task.done())
if metrics.EnabledExpensive {
miscOutReceiptPacketsMeter.Mark(1)
miscOutReceiptTrafficMeter.Mark(int64(reply.size()))
miscServingTimeReceiptTimer.Update(time.Duration(task.servingTime))
}
}()
p.fcClient.RequestProcessed(reqID, responseCount, maxCost, inSizeCost)
}
case GetProofsV2Msg:
p.Log().Trace("Received les/2 proofs request")
if metrics.EnabledExpensive {
miscInTrieProofPacketsMeter.Mark(1)
miscInTrieProofTrafficMeter.Mark(int64(msg.Size))
}
var req struct {
ReqID uint64
Reqs []ProofReq
}
if err := msg.Decode(&req); err != nil {
clientErrorMeter.Mark(1)
return errResp(ErrDecode, "msg %v: %v", msg, err)
}
// Gather state data until the fetch or network limits is reached
var (
lastBHash common.Hash
root common.Hash
header *types.Header
)
reqCnt := len(req.Reqs)
if accept(req.ReqID, uint64(reqCnt), MaxProofsFetch) {
wg.Add(1)
go func() {
defer wg.Done()
nodes := light.NewNodeSet()
for i, request := range req.Reqs {
if i != 0 && !task.waitOrStop() {
sendResponse(req.ReqID, 0, nil, task.servingTime)
return
}
// Look up the root hash belonging to the request
if request.BHash != lastBHash {
root, lastBHash = common.Hash{}, request.BHash
if header = h.blockchain.GetHeaderByHash(request.BHash); header == nil {
p.Log().Warn("Failed to retrieve header for proof", "hash", request.BHash)
p.bumpInvalid()
continue
}
// Refuse to search stale state data in the database since looking for
// a non-exist key is kind of expensive.
local := h.blockchain.CurrentHeader().Number.Uint64()
if !h.server.archiveMode && header.Number.Uint64()+core.TriesInMemory <= local {
p.Log().Debug("Reject stale trie request", "number", header.Number.Uint64(), "head", local)
p.bumpInvalid()
continue
}
root = header.Root
}
// If a header lookup failed (non existent), ignore subsequent requests for the same header
if root == (common.Hash{}) {
p.bumpInvalid()
continue
}
// Open the account or storage trie for the request
statedb := h.blockchain.StateCache()
var trie state.Trie
switch len(request.AccKey) {
case 0:
// No account key specified, open an account trie
trie, err = statedb.OpenTrie(root)
if trie == nil || err != nil {
p.Log().Warn("Failed to open storage trie for proof", "block", header.Number, "hash", header.Hash(), "root", root, "err", err)
continue
}
default:
// Account key specified, open a storage trie
account, err := h.getAccount(statedb.TrieDB(), root, common.BytesToHash(request.AccKey))
if err != nil {
p.Log().Warn("Failed to retrieve account for proof", "block", header.Number, "hash", header.Hash(), "account", common.BytesToHash(request.AccKey), "err", err)
p.bumpInvalid()
continue
}
trie, err = statedb.OpenStorageTrie(common.BytesToHash(request.AccKey), account.Root)
if trie == nil || err != nil {
p.Log().Warn("Failed to open storage trie for proof", "block", header.Number, "hash", header.Hash(), "account", common.BytesToHash(request.AccKey), "root", account.Root, "err", err)
continue
}
}
// Prove the user's request from the account or stroage trie
if err := trie.Prove(request.Key, request.FromLevel, nodes); err != nil {
p.Log().Warn("Failed to prove state request", "block", header.Number, "hash", header.Hash(), "err", err)
continue
}
if nodes.DataSize() >= softResponseLimit {
break
}
}
reply := p.replyProofsV2(req.ReqID, nodes.NodeList())
sendResponse(req.ReqID, uint64(reqCnt), reply, task.done())
if metrics.EnabledExpensive {
miscOutTrieProofPacketsMeter.Mark(1)
miscOutTrieProofTrafficMeter.Mark(int64(reply.size()))
miscServingTimeTrieProofTimer.Update(time.Duration(task.servingTime))
}
}()
}
case GetHelperTrieProofsMsg:
p.Log().Trace("Received helper trie proof request")
if metrics.EnabledExpensive {
miscInHelperTriePacketsMeter.Mark(1)
miscInHelperTrieTrafficMeter.Mark(int64(msg.Size))
}
var req struct {
ReqID uint64
Reqs []HelperTrieReq
}
if err := msg.Decode(&req); err != nil {
clientErrorMeter.Mark(1)
return errResp(ErrDecode, "msg %v: %v", msg, err)
}
// Gather state data until the fetch or network limits is reached
var (
auxBytes int
auxData [][]byte
)
reqCnt := len(req.Reqs)
if accept(req.ReqID, uint64(reqCnt), MaxHelperTrieProofsFetch) {
wg.Add(1)
go func() {
defer wg.Done()
var (
lastIdx uint64
lastType uint
root common.Hash
auxTrie *trie.Trie
)
nodes := light.NewNodeSet()
for i, request := range req.Reqs {
if i != 0 && !task.waitOrStop() {
sendResponse(req.ReqID, 0, nil, task.servingTime)
return
}
if auxTrie == nil || request.Type != lastType || request.TrieIdx != lastIdx {
auxTrie, lastType, lastIdx = nil, request.Type, request.TrieIdx
var prefix string
if root, prefix = h.getHelperTrie(request.Type, request.TrieIdx); root != (common.Hash{}) {
auxTrie, _ = trie.New(root, trie.NewDatabase(rawdb.NewTable(h.chainDb, prefix)))
}
}
if auxTrie == nil {
sendResponse(req.ReqID, 0, nil, task.servingTime)
return
}
// TODO(rjl493456442) short circuit if the proving is failed.
// The original client side code has a dirty hack to retrieve
// the headers with no valid proof. Keep the compatibility for
// legacy les protocol and drop this hack when the les2/3 are
// not supported.
err := auxTrie.Prove(request.Key, request.FromLevel, nodes)
if p.version >= lpv4 && err != nil {
sendResponse(req.ReqID, 0, nil, task.servingTime)
return
}
if request.AuxReq == htAuxHeader {
data := h.getAuxiliaryHeaders(request)
auxData = append(auxData, data)
auxBytes += len(data)
}
if nodes.DataSize()+auxBytes >= softResponseLimit {
break
}
}
reply := p.replyHelperTrieProofs(req.ReqID, HelperTrieResps{Proofs: nodes.NodeList(), AuxData: auxData})
sendResponse(req.ReqID, uint64(reqCnt), reply, task.done())
if metrics.EnabledExpensive {
miscOutHelperTriePacketsMeter.Mark(1)
miscOutHelperTrieTrafficMeter.Mark(int64(reply.size()))
miscServingTimeHelperTrieTimer.Update(time.Duration(task.servingTime))
}
}()
}
case SendTxV2Msg:
p.Log().Trace("Received new transactions")
if metrics.EnabledExpensive {
miscInTxsPacketsMeter.Mark(1)
miscInTxsTrafficMeter.Mark(int64(msg.Size))
}
var req struct {
ReqID uint64
Txs []*types.Transaction
}
if err := msg.Decode(&req); err != nil {
clientErrorMeter.Mark(1)
return errResp(ErrDecode, "msg %v: %v", msg, err)
}
reqCnt := len(req.Txs)
if accept(req.ReqID, uint64(reqCnt), MaxTxSend) {
wg.Add(1)
go func() {
defer wg.Done()
stats := make([]light.TxStatus, len(req.Txs))
for i, tx := range req.Txs {
if i != 0 && !task.waitOrStop() {
return
}
hash := tx.Hash()
stats[i] = h.txStatus(hash)
if stats[i].Status == core.TxStatusUnknown {
addFn := h.txpool.AddRemotes
// Add txs synchronously for testing purpose
if h.addTxsSync {
addFn = h.txpool.AddRemotesSync
}
if errs := addFn([]*types.Transaction{tx}); errs[0] != nil {
stats[i].Error = errs[0].Error()
continue
}
stats[i] = h.txStatus(hash)
}
}
reply := p.replyTxStatus(req.ReqID, stats)
sendResponse(req.ReqID, uint64(reqCnt), reply, task.done())
if metrics.EnabledExpensive {
miscOutTxsPacketsMeter.Mark(1)
miscOutTxsTrafficMeter.Mark(int64(reply.size()))
miscServingTimeTxTimer.Update(time.Duration(task.servingTime))
}
}()
}
case GetTxStatusMsg:
p.Log().Trace("Received transaction status query request")
if metrics.EnabledExpensive {
miscInTxStatusPacketsMeter.Mark(1)
miscInTxStatusTrafficMeter.Mark(int64(msg.Size))
}
var req struct {
ReqID uint64
Hashes []common.Hash
}
if err := msg.Decode(&req); err != nil {
clientErrorMeter.Mark(1)
return errResp(ErrDecode, "msg %v: %v", msg, err)
}
reqCnt := len(req.Hashes)
if accept(req.ReqID, uint64(reqCnt), MaxTxStatus) {
wg.Add(1)
go func() {
defer wg.Done()
stats := make([]light.TxStatus, len(req.Hashes))
for i, hash := range req.Hashes {
if i != 0 && !task.waitOrStop() {
sendResponse(req.ReqID, 0, nil, task.servingTime)
return
}
stats[i] = h.txStatus(hash)
}
reply := p.replyTxStatus(req.ReqID, stats)
sendResponse(req.ReqID, uint64(reqCnt), reply, task.done())
if metrics.EnabledExpensive {
miscOutTxStatusPacketsMeter.Mark(1)
miscOutTxStatusTrafficMeter.Mark(int64(reply.size()))
miscServingTimeTxStatusTimer.Update(time.Duration(task.servingTime))
}
}()
}
default:
p.Log().Trace("Received invalid message", "code", msg.Code)
clientErrorMeter.Mark(1)
return errResp(ErrInvalidMsgCode, "%v", msg.Code)
}
// If the client has made too much invalid request(e.g. request a non-existent data),
// reject them to prevent SPAM attack.
if p.getInvalid() > maxRequestErrors {
@ -874,8 +333,28 @@ func (h *serverHandler) handleMsg(p *clientPeer, wg *sync.WaitGroup) error {
return nil
}
// BlockChain implements serverBackend
func (h *serverHandler) BlockChain() *core.BlockChain {
return h.blockchain
}
// TxPool implements serverBackend
func (h *serverHandler) TxPool() *core.TxPool {
return h.txpool
}
// ArchiveMode implements serverBackend
func (h *serverHandler) ArchiveMode() bool {
return h.server.archiveMode
}
// AddTxsSync implements serverBackend
func (h *serverHandler) AddTxsSync() bool {
return h.addTxsSync
}
// getAccount retrieves an account from the state based on root.
func (h *serverHandler) getAccount(triedb *trie.Database, root, hash common.Hash) (state.Account, error) {
func getAccount(triedb *trie.Database, root, hash common.Hash) (state.Account, error) {
trie, err := trie.New(root, triedb)
if err != nil {
return state.Account{}, err
@ -892,43 +371,24 @@ func (h *serverHandler) getAccount(triedb *trie.Database, root, hash common.Hash
}
// getHelperTrie returns the post-processed trie root for the given trie ID and section index
func (h *serverHandler) getHelperTrie(typ uint, index uint64) (common.Hash, string) {
func (h *serverHandler) GetHelperTrie(typ uint, index uint64) *trie.Trie {
var (
root common.Hash
prefix string
)
switch typ {
case htCanonical:
sectionHead := rawdb.ReadCanonicalHash(h.chainDb, (index+1)*h.server.iConfig.ChtSize-1)
return light.GetChtRoot(h.chainDb, index, sectionHead), light.ChtTablePrefix
root, prefix = light.GetChtRoot(h.chainDb, index, sectionHead), light.ChtTablePrefix
case htBloomBits:
sectionHead := rawdb.ReadCanonicalHash(h.chainDb, (index+1)*h.server.iConfig.BloomTrieSize-1)
return light.GetBloomTrieRoot(h.chainDb, index, sectionHead), light.BloomTrieTablePrefix
}
return common.Hash{}, ""
}
// getAuxiliaryHeaders returns requested auxiliary headers for the CHT request.
func (h *serverHandler) getAuxiliaryHeaders(req HelperTrieReq) []byte {
if req.Type == htCanonical && req.AuxReq == htAuxHeader && len(req.Key) == 8 {
blockNum := binary.BigEndian.Uint64(req.Key)
hash := rawdb.ReadCanonicalHash(h.chainDb, blockNum)
return rawdb.ReadHeaderRLP(h.chainDb, hash, blockNum)
root, prefix = light.GetBloomTrieRoot(h.chainDb, index, sectionHead), light.BloomTrieTablePrefix
}
if root == (common.Hash{}) {
return nil
}
// txStatus returns the status of a specified transaction.
func (h *serverHandler) txStatus(hash common.Hash) light.TxStatus {
var stat light.TxStatus
// Looking the transaction in txpool first.
stat.Status = h.txpool.Status([]common.Hash{hash})[0]
// If the transaction is unknown to the pool, try looking it up locally.
if stat.Status == core.TxStatusUnknown {
lookup := h.blockchain.GetTransactionLookup(hash)
if lookup != nil {
stat.Status = core.TxStatusIncluded
stat.Lookup = lookup
}
}
return stat
trie, _ := trie.New(root, trie.NewDatabase(rawdb.NewTable(h.chainDb, prefix)))
return trie
}
// broadcastLoop broadcasts new block information to all connected light

569
les/server_requests.go Normal file
View File

@ -0,0 +1,569 @@
// Copyright 2021 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 les
import (
"encoding/binary"
"encoding/json"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/light"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/metrics"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/trie"
)
// serverBackend defines the backend functions needed for serving LES requests
type serverBackend interface {
ArchiveMode() bool
AddTxsSync() bool
BlockChain() *core.BlockChain
TxPool() *core.TxPool
GetHelperTrie(typ uint, index uint64) *trie.Trie
}
// Decoder is implemented by the messages passed to the handler functions
type Decoder interface {
Decode(val interface{}) error
}
// RequestType is a static struct that describes an LES request type and references
// its handler function.
type RequestType struct {
Name string
MaxCount uint64
InPacketsMeter, InTrafficMeter, OutPacketsMeter, OutTrafficMeter metrics.Meter
ServingTimeMeter metrics.Timer
Handle func(msg Decoder) (serve serveRequestFn, reqID, amount uint64, err error)
}
// serveRequestFn is returned by the request handler functions after decoding the request.
// This function does the actual request serving using the supplied backend. waitOrStop is
// called between serving individual request items and may block if the serving process
// needs to be throttled. If it returns false then the process is terminated.
// The reply is not sent by this function yet. The flow control feedback value is supplied
// by the protocol handler when calling the send function of the returned reply struct.
type serveRequestFn func(backend serverBackend, peer *clientPeer, waitOrStop func() bool) *reply
// Les3 contains the request types supported by les/2 and les/3
var Les3 = map[uint64]RequestType{
GetBlockHeadersMsg: RequestType{
Name: "block header request",
MaxCount: MaxHeaderFetch,
InPacketsMeter: miscInHeaderPacketsMeter,
InTrafficMeter: miscInHeaderTrafficMeter,
OutPacketsMeter: miscOutHeaderPacketsMeter,
OutTrafficMeter: miscOutHeaderTrafficMeter,
ServingTimeMeter: miscServingTimeHeaderTimer,
Handle: handleGetBlockHeaders,
},
GetBlockBodiesMsg: RequestType{
Name: "block bodies request",
MaxCount: MaxBodyFetch,
InPacketsMeter: miscInBodyPacketsMeter,
InTrafficMeter: miscInBodyTrafficMeter,
OutPacketsMeter: miscOutBodyPacketsMeter,
OutTrafficMeter: miscOutBodyTrafficMeter,
ServingTimeMeter: miscServingTimeBodyTimer,
Handle: handleGetBlockBodies,
},
GetCodeMsg: RequestType{
Name: "code request",
MaxCount: MaxCodeFetch,
InPacketsMeter: miscInCodePacketsMeter,
InTrafficMeter: miscInCodeTrafficMeter,
OutPacketsMeter: miscOutCodePacketsMeter,
OutTrafficMeter: miscOutCodeTrafficMeter,
ServingTimeMeter: miscServingTimeCodeTimer,
Handle: handleGetCode,
},
GetReceiptsMsg: RequestType{
Name: "receipts request",
MaxCount: MaxReceiptFetch,
InPacketsMeter: miscInReceiptPacketsMeter,
InTrafficMeter: miscInReceiptTrafficMeter,
OutPacketsMeter: miscOutReceiptPacketsMeter,
OutTrafficMeter: miscOutReceiptTrafficMeter,
ServingTimeMeter: miscServingTimeReceiptTimer,
Handle: handleGetReceipts,
},
GetProofsV2Msg: RequestType{
Name: "les/2 proofs request",
MaxCount: MaxProofsFetch,
InPacketsMeter: miscInTrieProofPacketsMeter,
InTrafficMeter: miscInTrieProofTrafficMeter,
OutPacketsMeter: miscOutTrieProofPacketsMeter,
OutTrafficMeter: miscOutTrieProofTrafficMeter,
ServingTimeMeter: miscServingTimeTrieProofTimer,
Handle: handleGetProofs,
},
GetHelperTrieProofsMsg: RequestType{
Name: "helper trie proof request",
MaxCount: MaxHelperTrieProofsFetch,
InPacketsMeter: miscInHelperTriePacketsMeter,
InTrafficMeter: miscInHelperTrieTrafficMeter,
OutPacketsMeter: miscOutHelperTriePacketsMeter,
OutTrafficMeter: miscOutHelperTrieTrafficMeter,
ServingTimeMeter: miscServingTimeHelperTrieTimer,
Handle: handleGetHelperTrieProofs,
},
SendTxV2Msg: RequestType{
Name: "new transactions",
MaxCount: MaxTxSend,
InPacketsMeter: miscInTxsPacketsMeter,
InTrafficMeter: miscInTxsTrafficMeter,
OutPacketsMeter: miscOutTxsPacketsMeter,
OutTrafficMeter: miscOutTxsTrafficMeter,
ServingTimeMeter: miscServingTimeTxTimer,
Handle: handleSendTx,
},
GetTxStatusMsg: RequestType{
Name: "transaction status query request",
MaxCount: MaxTxStatus,
InPacketsMeter: miscInTxStatusPacketsMeter,
InTrafficMeter: miscInTxStatusTrafficMeter,
OutPacketsMeter: miscOutTxStatusPacketsMeter,
OutTrafficMeter: miscOutTxStatusTrafficMeter,
ServingTimeMeter: miscServingTimeTxStatusTimer,
Handle: handleGetTxStatus,
},
}
// handleGetBlockHeaders handles a block header request
func handleGetBlockHeaders(msg Decoder) (serveRequestFn, uint64, uint64, error) {
var r GetBlockHeadersPacket
if err := msg.Decode(&r); err != nil {
return nil, 0, 0, err
}
return func(backend serverBackend, p *clientPeer, waitOrStop func() bool) *reply {
// Gather headers until the fetch or network limits is reached
var (
bc = backend.BlockChain()
hashMode = r.Query.Origin.Hash != (common.Hash{})
first = true
maxNonCanonical = uint64(100)
bytes common.StorageSize
headers []*types.Header
unknown bool
)
for !unknown && len(headers) < int(r.Query.Amount) && bytes < softResponseLimit {
if !first && !waitOrStop() {
return nil
}
// Retrieve the next header satisfying the r
var origin *types.Header
if hashMode {
if first {
origin = bc.GetHeaderByHash(r.Query.Origin.Hash)
if origin != nil {
r.Query.Origin.Number = origin.Number.Uint64()
}
} else {
origin = bc.GetHeader(r.Query.Origin.Hash, r.Query.Origin.Number)
}
} else {
origin = bc.GetHeaderByNumber(r.Query.Origin.Number)
}
if origin == nil {
break
}
headers = append(headers, origin)
bytes += estHeaderRlpSize
// Advance to the next header of the r
switch {
case hashMode && r.Query.Reverse:
// Hash based traversal towards the genesis block
ancestor := r.Query.Skip + 1
if ancestor == 0 {
unknown = true
} else {
r.Query.Origin.Hash, r.Query.Origin.Number = bc.GetAncestor(r.Query.Origin.Hash, r.Query.Origin.Number, ancestor, &maxNonCanonical)
unknown = r.Query.Origin.Hash == common.Hash{}
}
case hashMode && !r.Query.Reverse:
// Hash based traversal towards the leaf block
var (
current = origin.Number.Uint64()
next = current + r.Query.Skip + 1
)
if next <= current {
infos, _ := json.MarshalIndent(p.Peer.Info(), "", " ")
p.Log().Warn("GetBlockHeaders skip overflow attack", "current", current, "skip", r.Query.Skip, "next", next, "attacker", infos)
unknown = true
} else {
if header := bc.GetHeaderByNumber(next); header != nil {
nextHash := header.Hash()
expOldHash, _ := bc.GetAncestor(nextHash, next, r.Query.Skip+1, &maxNonCanonical)
if expOldHash == r.Query.Origin.Hash {
r.Query.Origin.Hash, r.Query.Origin.Number = nextHash, next
} else {
unknown = true
}
} else {
unknown = true
}
}
case r.Query.Reverse:
// Number based traversal towards the genesis block
if r.Query.Origin.Number >= r.Query.Skip+1 {
r.Query.Origin.Number -= r.Query.Skip + 1
} else {
unknown = true
}
case !r.Query.Reverse:
// Number based traversal towards the leaf block
r.Query.Origin.Number += r.Query.Skip + 1
}
first = false
}
return p.replyBlockHeaders(r.ReqID, headers)
}, r.ReqID, r.Query.Amount, nil
}
// handleGetBlockBodies handles a block body request
func handleGetBlockBodies(msg Decoder) (serveRequestFn, uint64, uint64, error) {
var r GetBlockBodiesPacket
if err := msg.Decode(&r); err != nil {
return nil, 0, 0, err
}
return func(backend serverBackend, p *clientPeer, waitOrStop func() bool) *reply {
var (
bytes int
bodies []rlp.RawValue
)
bc := backend.BlockChain()
for i, hash := range r.Hashes {
if i != 0 && !waitOrStop() {
return nil
}
if bytes >= softResponseLimit {
break
}
body := bc.GetBodyRLP(hash)
if body == nil {
p.bumpInvalid()
continue
}
bodies = append(bodies, body)
bytes += len(body)
}
return p.replyBlockBodiesRLP(r.ReqID, bodies)
}, r.ReqID, uint64(len(r.Hashes)), nil
}
// handleGetCode handles a contract code request
func handleGetCode(msg Decoder) (serveRequestFn, uint64, uint64, error) {
var r GetCodePacket
if err := msg.Decode(&r); err != nil {
return nil, 0, 0, err
}
return func(backend serverBackend, p *clientPeer, waitOrStop func() bool) *reply {
var (
bytes int
data [][]byte
)
bc := backend.BlockChain()
for i, request := range r.Reqs {
if i != 0 && !waitOrStop() {
return nil
}
// Look up the root hash belonging to the request
header := bc.GetHeaderByHash(request.BHash)
if header == nil {
p.Log().Warn("Failed to retrieve associate header for code", "hash", request.BHash)
p.bumpInvalid()
continue
}
// Refuse to search stale state data in the database since looking for
// a non-exist key is kind of expensive.
local := bc.CurrentHeader().Number.Uint64()
if !backend.ArchiveMode() && header.Number.Uint64()+core.TriesInMemory <= local {
p.Log().Debug("Reject stale code request", "number", header.Number.Uint64(), "head", local)
p.bumpInvalid()
continue
}
triedb := bc.StateCache().TrieDB()
account, err := getAccount(triedb, header.Root, common.BytesToHash(request.AccKey))
if err != nil {
p.Log().Warn("Failed to retrieve account for code", "block", header.Number, "hash", header.Hash(), "account", common.BytesToHash(request.AccKey), "err", err)
p.bumpInvalid()
continue
}
code, err := bc.StateCache().ContractCode(common.BytesToHash(request.AccKey), common.BytesToHash(account.CodeHash))
if err != nil {
p.Log().Warn("Failed to retrieve account code", "block", header.Number, "hash", header.Hash(), "account", common.BytesToHash(request.AccKey), "codehash", common.BytesToHash(account.CodeHash), "err", err)
continue
}
// Accumulate the code and abort if enough data was retrieved
data = append(data, code)
if bytes += len(code); bytes >= softResponseLimit {
break
}
}
return p.replyCode(r.ReqID, data)
}, r.ReqID, uint64(len(r.Reqs)), nil
}
// handleGetReceipts handles a block receipts request
func handleGetReceipts(msg Decoder) (serveRequestFn, uint64, uint64, error) {
var r GetReceiptsPacket
if err := msg.Decode(&r); err != nil {
return nil, 0, 0, err
}
return func(backend serverBackend, p *clientPeer, waitOrStop func() bool) *reply {
var (
bytes int
receipts []rlp.RawValue
)
bc := backend.BlockChain()
for i, hash := range r.Hashes {
if i != 0 && !waitOrStop() {
return nil
}
if bytes >= softResponseLimit {
break
}
// Retrieve the requested block's receipts, skipping if unknown to us
results := bc.GetReceiptsByHash(hash)
if results == nil {
if header := bc.GetHeaderByHash(hash); header == nil || header.ReceiptHash != types.EmptyRootHash {
p.bumpInvalid()
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.replyReceiptsRLP(r.ReqID, receipts)
}, r.ReqID, uint64(len(r.Hashes)), nil
}
// handleGetProofs handles a proof request
func handleGetProofs(msg Decoder) (serveRequestFn, uint64, uint64, error) {
var r GetProofsPacket
if err := msg.Decode(&r); err != nil {
return nil, 0, 0, err
}
return func(backend serverBackend, p *clientPeer, waitOrStop func() bool) *reply {
var (
lastBHash common.Hash
root common.Hash
header *types.Header
err error
)
bc := backend.BlockChain()
nodes := light.NewNodeSet()
for i, request := range r.Reqs {
if i != 0 && !waitOrStop() {
return nil
}
// Look up the root hash belonging to the request
if request.BHash != lastBHash {
root, lastBHash = common.Hash{}, request.BHash
if header = bc.GetHeaderByHash(request.BHash); header == nil {
p.Log().Warn("Failed to retrieve header for proof", "hash", request.BHash)
p.bumpInvalid()
continue
}
// Refuse to search stale state data in the database since looking for
// a non-exist key is kind of expensive.
local := bc.CurrentHeader().Number.Uint64()
if !backend.ArchiveMode() && header.Number.Uint64()+core.TriesInMemory <= local {
p.Log().Debug("Reject stale trie request", "number", header.Number.Uint64(), "head", local)
p.bumpInvalid()
continue
}
root = header.Root
}
// If a header lookup failed (non existent), ignore subsequent requests for the same header
if root == (common.Hash{}) {
p.bumpInvalid()
continue
}
// Open the account or storage trie for the request
statedb := bc.StateCache()
var trie state.Trie
switch len(request.AccKey) {
case 0:
// No account key specified, open an account trie
trie, err = statedb.OpenTrie(root)
if trie == nil || err != nil {
p.Log().Warn("Failed to open storage trie for proof", "block", header.Number, "hash", header.Hash(), "root", root, "err", err)
continue
}
default:
// Account key specified, open a storage trie
account, err := getAccount(statedb.TrieDB(), root, common.BytesToHash(request.AccKey))
if err != nil {
p.Log().Warn("Failed to retrieve account for proof", "block", header.Number, "hash", header.Hash(), "account", common.BytesToHash(request.AccKey), "err", err)
p.bumpInvalid()
continue
}
trie, err = statedb.OpenStorageTrie(common.BytesToHash(request.AccKey), account.Root)
if trie == nil || err != nil {
p.Log().Warn("Failed to open storage trie for proof", "block", header.Number, "hash", header.Hash(), "account", common.BytesToHash(request.AccKey), "root", account.Root, "err", err)
continue
}
}
// Prove the user's request from the account or stroage trie
if err := trie.Prove(request.Key, request.FromLevel, nodes); err != nil {
p.Log().Warn("Failed to prove state request", "block", header.Number, "hash", header.Hash(), "err", err)
continue
}
if nodes.DataSize() >= softResponseLimit {
break
}
}
return p.replyProofsV2(r.ReqID, nodes.NodeList())
}, r.ReqID, uint64(len(r.Reqs)), nil
}
// handleGetHelperTrieProofs handles a helper trie proof request
func handleGetHelperTrieProofs(msg Decoder) (serveRequestFn, uint64, uint64, error) {
var r GetHelperTrieProofsPacket
if err := msg.Decode(&r); err != nil {
return nil, 0, 0, err
}
return func(backend serverBackend, p *clientPeer, waitOrStop func() bool) *reply {
var (
lastIdx uint64
lastType uint
auxTrie *trie.Trie
auxBytes int
auxData [][]byte
)
bc := backend.BlockChain()
nodes := light.NewNodeSet()
for i, request := range r.Reqs {
if i != 0 && !waitOrStop() {
return nil
}
if auxTrie == nil || request.Type != lastType || request.TrieIdx != lastIdx {
lastType, lastIdx = request.Type, request.TrieIdx
auxTrie = backend.GetHelperTrie(request.Type, request.TrieIdx)
}
if auxTrie == nil {
return nil
}
// TODO(rjl493456442) short circuit if the proving is failed.
// The original client side code has a dirty hack to retrieve
// the headers with no valid proof. Keep the compatibility for
// legacy les protocol and drop this hack when the les2/3 are
// not supported.
err := auxTrie.Prove(request.Key, request.FromLevel, nodes)
if p.version >= lpv4 && err != nil {
return nil
}
if request.Type == htCanonical && request.AuxReq == htAuxHeader && len(request.Key) == 8 {
header := bc.GetHeaderByNumber(binary.BigEndian.Uint64(request.Key))
data, err := rlp.EncodeToBytes(header)
if err != nil {
log.Error("Failed to encode header", "err", err)
return nil
}
auxData = append(auxData, data)
auxBytes += len(data)
}
if nodes.DataSize()+auxBytes >= softResponseLimit {
break
}
}
return p.replyHelperTrieProofs(r.ReqID, HelperTrieResps{Proofs: nodes.NodeList(), AuxData: auxData})
}, r.ReqID, uint64(len(r.Reqs)), nil
}
// handleSendTx handles a transaction propagation request
func handleSendTx(msg Decoder) (serveRequestFn, uint64, uint64, error) {
var r SendTxPacket
if err := msg.Decode(&r); err != nil {
return nil, 0, 0, err
}
amount := uint64(len(r.Txs))
return func(backend serverBackend, p *clientPeer, waitOrStop func() bool) *reply {
stats := make([]light.TxStatus, len(r.Txs))
for i, tx := range r.Txs {
if i != 0 && !waitOrStop() {
return nil
}
hash := tx.Hash()
stats[i] = txStatus(backend, hash)
if stats[i].Status == core.TxStatusUnknown {
addFn := backend.TxPool().AddRemotes
// Add txs synchronously for testing purpose
if backend.AddTxsSync() {
addFn = backend.TxPool().AddRemotesSync
}
if errs := addFn([]*types.Transaction{tx}); errs[0] != nil {
stats[i].Error = errs[0].Error()
continue
}
stats[i] = txStatus(backend, hash)
}
}
return p.replyTxStatus(r.ReqID, stats)
}, r.ReqID, amount, nil
}
// handleGetTxStatus handles a transaction status query
func handleGetTxStatus(msg Decoder) (serveRequestFn, uint64, uint64, error) {
var r GetTxStatusPacket
if err := msg.Decode(&r); err != nil {
return nil, 0, 0, err
}
return func(backend serverBackend, p *clientPeer, waitOrStop func() bool) *reply {
stats := make([]light.TxStatus, len(r.Hashes))
for i, hash := range r.Hashes {
if i != 0 && !waitOrStop() {
return nil
}
stats[i] = txStatus(backend, hash)
}
return p.replyTxStatus(r.ReqID, stats)
}, r.ReqID, uint64(len(r.Hashes)), nil
}
// txStatus returns the status of a specified transaction.
func txStatus(b serverBackend, hash common.Hash) light.TxStatus {
var stat light.TxStatus
// Looking the transaction in txpool first.
stat.Status = b.TxPool().Status([]common.Hash{hash})[0]
// If the transaction is unknown to the pool, try looking it up locally.
if stat.Status == core.TxStatusUnknown {
lookup := b.BlockChain().GetTransactionLookup(hash)
if lookup != nil {
stat.Status = core.TxStatusIncluded
stat.Lookup = lookup
}
}
return stat
}

4
les/test_helper.go
View File

@ -594,3 +594,7 @@ func newClientServerEnv(t *testing.T, blocks int, protocol int, callback indexer
}
return s, c, teardown
}
func NewFuzzerPeer(version int) *clientPeer {
return newClientPeer(version, 0, p2p.NewPeer(enode.ID{}, "", nil), nil)
}

1
oss-fuzz.sh
View File

@ -101,6 +101,7 @@ compile_fuzzer tests/fuzzers/trie Fuzz fuzzTrie
compile_fuzzer tests/fuzzers/stacktrie Fuzz fuzzStackTrie
compile_fuzzer tests/fuzzers/difficulty Fuzz fuzzDifficulty
compile_fuzzer tests/fuzzers/abi Fuzz fuzzAbi
compile_fuzzer tests/fuzzers/les Fuzz fuzzLes
compile_fuzzer tests/fuzzers/bls12381 FuzzG1Add fuzz_g1_add
compile_fuzzer tests/fuzzers/bls12381 FuzzG1Mul fuzz_g1_mul

41
tests/fuzzers/les/debug/main.go Normal file
View File

@ -0,0 +1,41 @@
// Copyright 2020 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 main
import (
"fmt"
"io/ioutil"
"os"
"github.com/ethereum/go-ethereum/tests/fuzzers/les"
)
func main() {
if len(os.Args) != 2 {
fmt.Fprintf(os.Stderr, "Usage: debug <file>\n")
fmt.Fprintf(os.Stderr, "Example\n")
fmt.Fprintf(os.Stderr, " $ debug ../crashers/4bbef6857c733a87ecf6fd8b9e7238f65eb9862a\n")
os.Exit(1)
}
crasher := os.Args[1]
data, err := ioutil.ReadFile(crasher)
if err != nil {
fmt.Fprintf(os.Stderr, "error loading crasher %v: %v", crasher, err)
os.Exit(1)
}
les.Fuzz(data)
}

407
tests/fuzzers/les/les-fuzzer.go Normal file
View File

@ -0,0 +1,407 @@
// Copyright 2021 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 les
import (
"bytes"
"encoding/binary"
"io"
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/consensus/ethash"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/crypto"
l "github.com/ethereum/go-ethereum/les"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/trie"
)
var (
bankKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
bankAddr = crypto.PubkeyToAddress(bankKey.PublicKey)
bankFunds = new(big.Int).Mul(big.NewInt(100), big.NewInt(params.Ether))
testChainLen = 256
testContractCode = common.Hex2Bytes("606060405260cc8060106000396000f360606040526000357c01000000000000000000000000000000000000000000000000000000009004806360cd2685146041578063c16431b914606b57603f565b005b6055600480803590602001909190505060a9565b6040518082815260200191505060405180910390f35b60886004808035906020019091908035906020019091905050608a565b005b80600060005083606481101560025790900160005b50819055505b5050565b6000600060005082606481101560025790900160005b5054905060c7565b91905056")
chain *core.BlockChain
addrHashes []common.Hash
txHashes []common.Hash
chtTrie *trie.Trie
bloomTrie *trie.Trie
chtKeys [][]byte
bloomKeys [][]byte
)
func makechain() (bc *core.BlockChain, addrHashes, txHashes []common.Hash) {
db := rawdb.NewMemoryDatabase()
gspec := core.Genesis{
Config: params.TestChainConfig,
Alloc: core.GenesisAlloc{bankAddr: {Balance: bankFunds}},
GasLimit: 100000000,
}
genesis := gspec.MustCommit(db)
signer := types.HomesteadSigner{}
blocks, _ := core.GenerateChain(gspec.Config, genesis, ethash.NewFaker(), db, testChainLen,
func(i int, gen *core.BlockGen) {
var (
tx *types.Transaction
addr common.Address
)
nonce := uint64(i)
if i%4 == 0 {
tx, _ = types.SignTx(types.NewContractCreation(nonce, big.NewInt(0), 200000, big.NewInt(0), testContractCode), signer, bankKey)
addr = crypto.CreateAddress(bankAddr, nonce)
} else {
addr = common.BigToAddress(big.NewInt(int64(i)))
tx, _ = types.SignTx(types.NewTransaction(nonce, addr, big.NewInt(10000), params.TxGas, big.NewInt(params.GWei), nil), signer, bankKey)
}
gen.AddTx(tx)
addrHashes = append(addrHashes, crypto.Keccak256Hash(addr[:]))
txHashes = append(txHashes, tx.Hash())
})
bc, _ = core.NewBlockChain(db, nil, gspec.Config, ethash.NewFaker(), vm.Config{}, nil, nil)
if _, err := bc.InsertChain(blocks); err != nil {
panic(err)
}
return
}
func makeTries() (chtTrie *trie.Trie, bloomTrie *trie.Trie, chtKeys, bloomKeys [][]byte) {
chtTrie, _ = trie.New(common.Hash{}, trie.NewDatabase(rawdb.NewMemoryDatabase()))
bloomTrie, _ = trie.New(common.Hash{}, trie.NewDatabase(rawdb.NewMemoryDatabase()))
for i := 0; i < testChainLen; i++ {
// The element in CHT is <big-endian block number> -> <block hash>
key := make([]byte, 8)
binary.BigEndian.PutUint64(key, uint64(i+1))
chtTrie.Update(key, []byte{0x1, 0xf})
chtKeys = append(chtKeys, key)
// The element in Bloom trie is <2 byte bit index> + <big-endian block number> -> bloom
key2 := make([]byte, 10)
binary.BigEndian.PutUint64(key2[2:], uint64(i+1))
bloomTrie.Update(key2, []byte{0x2, 0xe})
bloomKeys = append(bloomKeys, key2)
}
return
}
func init() {
chain, addrHashes, txHashes = makechain()
chtTrie, bloomTrie, chtKeys, bloomKeys = makeTries()
}
type fuzzer struct {
chain *core.BlockChain
pool *core.TxPool
chainLen int
addr, txs []common.Hash
nonce uint64
chtKeys [][]byte
bloomKeys [][]byte
chtTrie *trie.Trie
bloomTrie *trie.Trie
input io.Reader
exhausted bool
}
func newFuzzer(input []byte) *fuzzer {
return &fuzzer{
chain: chain,
chainLen: testChainLen,
addr: addrHashes,
txs: txHashes,
chtTrie: chtTrie,
bloomTrie: bloomTrie,
chtKeys: chtKeys,
bloomKeys: bloomKeys,
nonce: uint64(len(txHashes)),
pool: core.NewTxPool(core.DefaultTxPoolConfig, params.TestChainConfig, chain),
input: bytes.NewReader(input),
}
}
func (f *fuzzer) read(size int) []byte {
out := make([]byte, size)
if _, err := f.input.Read(out); err != nil {
f.exhausted = true
}
return out
}
func (f *fuzzer) randomByte() byte {
d := f.read(1)
return d[0]
}
func (f *fuzzer) randomBool() bool {
d := f.read(1)
return d[0]&1 == 1
}
func (f *fuzzer) randomInt(max int) int {
if max == 0 {
return 0
}
if max <= 256 {
return int(f.randomByte()) % max
}
var a uint16
if err := binary.Read(f.input, binary.LittleEndian, &a); err != nil {
f.exhausted = true
}
return int(a % uint16(max))
}
func (f *fuzzer) randomX(max int) uint64 {
var a uint16
if err := binary.Read(f.input, binary.LittleEndian, &a); err != nil {
f.exhausted = true
}
if a < 0x8000 {
return uint64(a%uint16(max+1)) - 1
}
return (uint64(1)<<(a%64+1) - 1) & (uint64(a) * 343897772345826595)
}
func (f *fuzzer) randomBlockHash() common.Hash {
h := f.chain.GetCanonicalHash(uint64(f.randomInt(3 * f.chainLen)))
if h != (common.Hash{}) {
return h
}
return common.BytesToHash(f.read(common.HashLength))
}
func (f *fuzzer) randomAddrHash() []byte {
i := f.randomInt(3 * len(f.addr))
if i < len(f.addr) {
return f.addr[i].Bytes()
}
return f.read(common.HashLength)
}
func (f *fuzzer) randomCHTTrieKey() []byte {
i := f.randomInt(3 * len(f.chtKeys))
if i < len(f.chtKeys) {
return f.chtKeys[i]
}
return f.read(8)
}
func (f *fuzzer) randomBloomTrieKey() []byte {
i := f.randomInt(3 * len(f.bloomKeys))
if i < len(f.bloomKeys) {
return f.bloomKeys[i]
}
return f.read(10)
}
func (f *fuzzer) randomTxHash() common.Hash {
i := f.randomInt(3 * len(f.txs))
if i < len(f.txs) {
return f.txs[i]
}
return common.BytesToHash(f.read(common.HashLength))
}
func (f *fuzzer) BlockChain() *core.BlockChain {
return f.chain
}
func (f *fuzzer) TxPool() *core.TxPool {
return f.pool
}
func (f *fuzzer) ArchiveMode() bool {
return false
}
func (f *fuzzer) AddTxsSync() bool {
return false
}
func (f *fuzzer) GetHelperTrie(typ uint, index uint64) *trie.Trie {
if typ == 0 {
return f.chtTrie
} else if typ == 1 {
return f.bloomTrie
}
return nil
}
type dummyMsg struct {
data []byte
}
func (d dummyMsg) Decode(val interface{}) error {
return rlp.DecodeBytes(d.data, val)
}
func (f *fuzzer) doFuzz(msgCode uint64, packet interface{}) {
version := f.randomInt(3) + 2 // [LES2, LES3, LES4]
peer := l.NewFuzzerPeer(version)
enc, err := rlp.EncodeToBytes(packet)
if err != nil {
panic(err)
}
fn, _, _, err := l.Les3[msgCode].Handle(dummyMsg{enc})
if err != nil {
panic(err)
}
fn(f, peer, func() bool { return true })
}
func Fuzz(input []byte) int {
// We expect some large inputs
if len(input) < 100 {
return -1
}
f := newFuzzer(input)
if f.exhausted {
return -1
}
for !f.exhausted {
switch f.randomInt(8) {
case 0:
req := &l.GetBlockHeadersPacket{
Query: l.GetBlockHeadersData{
Amount: f.randomX(l.MaxHeaderFetch + 1),
Skip: f.randomX(10),
Reverse: f.randomBool(),
},
}
if f.randomBool() {
req.Query.Origin.Hash = f.randomBlockHash()
} else {
req.Query.Origin.Number = uint64(f.randomInt(f.chainLen * 2))
}
f.doFuzz(l.GetBlockHeadersMsg, req)
case 1:
req := &l.GetBlockBodiesPacket{Hashes: make([]common.Hash, f.randomInt(l.MaxBodyFetch+1))}
for i := range req.Hashes {
req.Hashes[i] = f.randomBlockHash()
}
f.doFuzz(l.GetBlockBodiesMsg, req)
case 2:
req := &l.GetCodePacket{Reqs: make([]l.CodeReq, f.randomInt(l.MaxCodeFetch+1))}
for i := range req.Reqs {
req.Reqs[i] = l.CodeReq{
BHash: f.randomBlockHash(),
AccKey: f.randomAddrHash(),
}
}
f.doFuzz(l.GetCodeMsg, req)
case 3:
req := &l.GetReceiptsPacket{Hashes: make([]common.Hash, f.randomInt(l.MaxReceiptFetch+1))}
for i := range req.Hashes {
req.Hashes[i] = f.randomBlockHash()
}
f.doFuzz(l.GetReceiptsMsg, req)
case 4:
req := &l.GetProofsPacket{Reqs: make([]l.ProofReq, f.randomInt(l.MaxProofsFetch+1))}
for i := range req.Reqs {
if f.randomBool() {
req.Reqs[i] = l.ProofReq{
BHash: f.randomBlockHash(),
AccKey: f.randomAddrHash(),
Key: f.randomAddrHash(),
FromLevel: uint(f.randomX(3)),
}
} else {
req.Reqs[i] = l.ProofReq{
BHash: f.randomBlockHash(),
Key: f.randomAddrHash(),
FromLevel: uint(f.randomX(3)),
}
}
}
f.doFuzz(l.GetProofsV2Msg, req)
case 5:
req := &l.GetHelperTrieProofsPacket{Reqs: make([]l.HelperTrieReq, f.randomInt(l.MaxHelperTrieProofsFetch+1))}
for i := range req.Reqs {
switch f.randomInt(3) {
case 0:
// Canonical hash trie
req.Reqs[i] = l.HelperTrieReq{
Type: 0,
TrieIdx: f.randomX(3),
Key: f.randomCHTTrieKey(),
FromLevel: uint(f.randomX(3)),
AuxReq: uint(2),
}
case 1:
// Bloom trie
req.Reqs[i] = l.HelperTrieReq{
Type: 1,
TrieIdx: f.randomX(3),
Key: f.randomBloomTrieKey(),
FromLevel: uint(f.randomX(3)),
AuxReq: 0,
}
default:
// Random trie
req.Reqs[i] = l.HelperTrieReq{
Type: 2,
TrieIdx: f.randomX(3),
Key: f.randomCHTTrieKey(),
FromLevel: uint(f.randomX(3)),
AuxReq: 0,
}
}
}
f.doFuzz(l.GetHelperTrieProofsMsg, req)
case 6:
req := &l.SendTxPacket{Txs: make([]*types.Transaction, f.randomInt(l.MaxTxSend+1))}
signer := types.HomesteadSigner{}
for i := range req.Txs {
var nonce uint64
if f.randomBool() {
nonce = uint64(f.randomByte())
} else {
nonce = f.nonce
f.nonce += 1
}
req.Txs[i], _ = types.SignTx(types.NewTransaction(nonce, common.Address{}, big.NewInt(10000), params.TxGas, big.NewInt(1000000000*int64(f.randomByte())), nil), signer, bankKey)
}
f.doFuzz(l.SendTxV2Msg, req)
case 7:
req := &l.GetTxStatusPacket{Hashes: make([]common.Hash, f.randomInt(l.MaxTxStatus+1))}
for i := range req.Hashes {
req.Hashes[i] = f.randomTxHash()
}
f.doFuzz(l.GetTxStatusMsg, req)
}
}
return 0
}