// Copyright 2016 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"
"math/big"
"testing"
"time"
"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/core/vm"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/light"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/rlp"
"golang.org/x/net/context"
)
type odrTestFn func(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte
func TestOdrGetBlockLes1(t *testing.T) { testOdr(t, 1, 1, odrGetBlock) }
func odrGetBlock(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte {
var block *types.Block
if bc != nil {
block = bc.GetBlockByHash(bhash)
} else {
block, _ = lc.GetBlockByHash(ctx, bhash)
}
if block == nil {
return nil
}
rlp, _ := rlp.EncodeToBytes(block)
return rlp
}
func TestOdrGetReceiptsLes1(t *testing.T) { testOdr(t, 1, 1, odrGetReceipts) }
func odrGetReceipts(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte {
var receipts types.Receipts
if bc != nil {
receipts = core.GetBlockReceipts(db, bhash, core.GetBlockNumber(db, bhash))
} else {
receipts, _ = light.GetBlockReceipts(ctx, lc.Odr(), bhash, core.GetBlockNumber(db, bhash))
}
if receipts == nil {
return nil
}
rlp, _ := rlp.EncodeToBytes(receipts)
return rlp
}
func TestOdrAccountsLes1(t *testing.T) { testOdr(t, 1, 1, odrAccounts) }
func odrAccounts(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte {
dummyAddr := common.HexToAddress("1234567812345678123456781234567812345678")
acc := []common.Address{testBankAddress, acc1Addr, acc2Addr, dummyAddr}
var res []byte
for _, addr := range acc {
if bc != nil {
header := bc.GetHeaderByHash(bhash)
st, err := state.New(header.Root, db)
if err == nil {
bal := st.GetBalance(addr)
rlp, _ := rlp.EncodeToBytes(bal)
res = append(res, rlp...)
}
} else {
header := lc.GetHeaderByHash(bhash)
st := light.NewLightState(light.StateTrieID(header), lc.Odr())
bal, err := st.GetBalance(ctx, addr)
if err == nil {
rlp, _ := rlp.EncodeToBytes(bal)
res = append(res, rlp...)
}
}
}
return res
}
func TestOdrContractCallLes1(t *testing.T) { testOdr(t, 1, 2, odrContractCall) }
type callmsg struct {
types.Message
}
func (callmsg) CheckNonce() bool { return false }
func odrContractCall(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte {
data := common.Hex2Bytes("60CD26850000000000000000000000000000000000000000000000000000000000000000")
var res []byte
for i := 0; i < 3; i++ {
data[35] = byte(i)
if bc != nil {
header := bc.GetHeaderByHash(bhash)
statedb, err := state.New(header.Root, db)
if err == nil {
from := statedb.GetOrNewStateObject(testBankAddress)
from.SetBalance(common.MaxBig)
msg := callmsg{types.NewMessage(from.Address(), &testContractAddr, 0, new(big.Int), big.NewInt(100000), new(big.Int), data, false)}
context := core.NewEVMContext(msg, header, bc)
vmenv := vm.NewEVM(context, statedb, config, vm.Config{})
//vmenv := core.NewEnv(statedb, config, bc, msg, header, vm.Config{})
gp := new(core.GasPool).AddGas(common.MaxBig)
ret, _, _ := core.ApplyMessage(vmenv, msg, gp)
res = append(res, ret...)
}
} else {
header := lc.GetHeaderByHash(bhash)
state := light.NewLightState(light.StateTrieID(header), lc.Odr())
vmstate := light.NewVMState(ctx, state)
from, err := state.GetOrNewStateObject(ctx, testBankAddress)
if err == nil {
from.SetBalance(common.MaxBig)
msg := callmsg{types.NewMessage(from.Address(), &testContractAddr, 0, new(big.Int), big.NewInt(100000), new(big.Int), data, false)}
context := core.NewEVMContext(msg, header, lc)
vmenv := vm.NewEVM(context, vmstate, config, vm.Config{})
//vmenv := light.NewEnv(ctx, state, config, lc, msg, header, vm.Config{})
gp := new(core.GasPool).AddGas(common.MaxBig)
ret, _, _ := core.ApplyMessage(vmenv, msg, gp)
if vmstate.Error() == nil {
res = append(res, ret...)
}
}
}
}
return res
}
func testOdr(t *testing.T, protocol int, expFail uint64, fn odrTestFn) {
// Assemble the test environment
pm, db, odr := newTestProtocolManagerMust(t, false, 4, testChainGen)
lpm, ldb, odr := newTestProtocolManagerMust(t, true, 0, nil)
_, err1, lpeer, err2 := newTestPeerPair("peer", protocol, pm, lpm)
pool := (*testServerPool)(lpeer)
odr.serverPool = pool
select {
case <-time.After(time.Millisecond * 100):
case err := <-err1:
t.Fatalf("peer 1 handshake error: %v", err)
case err := <-err2:
t.Fatalf("peer 1 handshake error: %v", err)
}
lpm.synchronise(lpeer)
test := func(expFail uint64) {
for i := uint64(0); i <= pm.blockchain.CurrentHeader().Number.Uint64(); i++ {
bhash := core.GetCanonicalHash(db, i)
b1 := fn(light.NoOdr, db, pm.chainConfig, pm.blockchain.(*core.BlockChain), nil, bhash)
ctx, _ := context.WithTimeout(context.Background(), 200*time.Millisecond)
b2 := fn(ctx, ldb, lpm.chainConfig, nil, lpm.blockchain.(*light.LightChain), bhash)
eq := bytes.Equal(b1, b2)
exp := i < expFail
if exp && !eq {
t.Errorf("odr mismatch")
}
if !exp && eq {
t.Errorf("unexpected odr match")
}
}
}
// temporarily remove peer to test odr fails
odr.serverPool = nil
// expect retrievals to fail (except genesis block) without a les peer
test(expFail)
odr.serverPool = pool
// expect all retrievals to pass
test(5)
odr.serverPool = nil
// still expect all retrievals to pass, now data should be cached locally
test(5)
}
