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internal/ethapi: fix codehash lookup in eth_getProof (#28357)

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This change fixes #28355, where eth_getProof failed to return the correct codehash under certain conditions. This PR changes the logic to unconditionally look up the codehash, and also adds some more tests.
This commit is contained in:
Martin Holst Swende 2023-10-17 09:25:16 +02:00 committed by GitHub
parent a5544d35f6
commit 8b99ad4602
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 72 additions and 70 deletions
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56
ethclient/gethclient/gethclient_test.go
View File

@ -39,11 +39,12 @@ import (
) )
var ( var (
testKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") testKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
testAddr = crypto.PubkeyToAddress(testKey.PublicKey) testAddr = crypto.PubkeyToAddress(testKey.PublicKey)
testSlot = common.HexToHash("0xdeadbeef") testContract = common.HexToAddress("0xbeef")
testValue = crypto.Keccak256Hash(testSlot[:]) testSlot = common.HexToHash("0xdeadbeef")
testBalance = big.NewInt(2e15) testValue = crypto.Keccak256Hash(testSlot[:])
testBalance = big.NewInt(2e15)
) )
func newTestBackend(t *testing.T) (*node.Node, []*types.Block) { func newTestBackend(t *testing.T) (*node.Node, []*types.Block) {
@ -78,8 +79,9 @@ func newTestBackend(t *testing.T) (*node.Node, []*types.Block) {
func generateTestChain() (*core.Genesis, []*types.Block) { func generateTestChain() (*core.Genesis, []*types.Block) {
genesis := &core.Genesis{ genesis := &core.Genesis{
Config: params.AllEthashProtocolChanges, Config: params.AllEthashProtocolChanges,
Alloc: core.GenesisAlloc{testAddr: {Balance: testBalance, Storage: map[common.Hash]common.Hash{testSlot: testValue}}}, Alloc: core.GenesisAlloc{testAddr: {Balance: testBalance, Storage: map[common.Hash]common.Hash{testSlot: testValue}},
testContract: {Nonce: 1, Code: []byte{0x13, 0x37}}},
ExtraData: []byte("test genesis"), ExtraData: []byte("test genesis"),
Timestamp: 9000, Timestamp: 9000,
} }
@ -103,8 +105,11 @@ func TestGethClient(t *testing.T) {
test func(t *testing.T) test func(t *testing.T)
}{ }{
{ {
"TestGetProof", "TestGetProof1",
func(t *testing.T) { testGetProof(t, client) }, func(t *testing.T) { testGetProof(t, client, testAddr) },
}, {
"TestGetProof2",
func(t *testing.T) { testGetProof(t, client, testContract) },
}, { }, {
"TestGetProofCanonicalizeKeys", "TestGetProofCanonicalizeKeys",
func(t *testing.T) { testGetProofCanonicalizeKeys(t, client) }, func(t *testing.T) { testGetProofCanonicalizeKeys(t, client) },
@ -201,38 +206,41 @@ func testAccessList(t *testing.T, client *rpc.Client) {
} }
} }
func testGetProof(t *testing.T, client *rpc.Client) { func testGetProof(t *testing.T, client *rpc.Client, addr common.Address) {
ec := New(client) ec := New(client)
ethcl := ethclient.NewClient(client) ethcl := ethclient.NewClient(client)
result, err := ec.GetProof(context.Background(), testAddr, []string{testSlot.String()}, nil) result, err := ec.GetProof(context.Background(), addr, []string{testSlot.String()}, nil)
if err != nil { if err != nil {
t.Fatal(err) t.Fatal(err)
} }
if !bytes.Equal(result.Address[:], testAddr[:]) { if result.Address != addr {
t.Fatalf("unexpected address, want: %v got: %v", testAddr, result.Address) t.Fatalf("unexpected address, have: %v want: %v", result.Address, addr)
} }
// test nonce // test nonce
nonce, _ := ethcl.NonceAt(context.Background(), result.Address, nil) if nonce, _ := ethcl.NonceAt(context.Background(), addr, nil); result.Nonce != nonce {
if result.Nonce != nonce {
t.Fatalf("invalid nonce, want: %v got: %v", nonce, result.Nonce) t.Fatalf("invalid nonce, want: %v got: %v", nonce, result.Nonce)
} }
// test balance // test balance
balance, _ := ethcl.BalanceAt(context.Background(), result.Address, nil) if balance, _ := ethcl.BalanceAt(context.Background(), addr, nil); result.Balance.Cmp(balance) != 0 {
if result.Balance.Cmp(balance) != 0 {
t.Fatalf("invalid balance, want: %v got: %v", balance, result.Balance) t.Fatalf("invalid balance, want: %v got: %v", balance, result.Balance)
} }
// test storage // test storage
if len(result.StorageProof) != 1 { if len(result.StorageProof) != 1 {
t.Fatalf("invalid storage proof, want 1 proof, got %v proof(s)", len(result.StorageProof)) t.Fatalf("invalid storage proof, want 1 proof, got %v proof(s)", len(result.StorageProof))
} }
proof := result.StorageProof[0] for _, proof := range result.StorageProof {
slotValue, _ := ethcl.StorageAt(context.Background(), testAddr, testSlot, nil) if proof.Key != testSlot.String() {
if !bytes.Equal(slotValue, proof.Value.Bytes()) { t.Fatalf("invalid storage proof key, want: %q, got: %q", testSlot.String(), proof.Key)
t.Fatalf("invalid storage proof value, want: %v, got: %v", slotValue, proof.Value.Bytes()) }
slotValue, _ := ethcl.StorageAt(context.Background(), addr, common.HexToHash(proof.Key), nil)
if have, want := common.BigToHash(proof.Value), common.BytesToHash(slotValue); have != want {
t.Fatalf("addr %x, invalid storage proof value: have: %v, want: %v", addr, have, want)
}
} }
if proof.Key != testSlot.String() { // test code
t.Fatalf("invalid storage proof key, want: %q, got: %q", testSlot.String(), proof.Key) code, _ := ethcl.CodeAt(context.Background(), addr, nil)
if have, want := result.CodeHash, crypto.Keccak256Hash(code); have != want {
t.Fatalf("codehash wrong, have %v want %v ", have, want)
} }
} }

86
internal/ethapi/api.go
View File

@ -675,10 +675,6 @@ func (s *BlockChainAPI) GetProof(ctx context.Context, address common.Address, st
keys = make([]common.Hash, len(storageKeys)) keys = make([]common.Hash, len(storageKeys))
keyLengths = make([]int, len(storageKeys)) keyLengths = make([]int, len(storageKeys))
storageProof = make([]StorageResult, len(storageKeys)) storageProof = make([]StorageResult, len(storageKeys))
storageTrie state.Trie
storageHash = types.EmptyRootHash
codeHash = types.EmptyCodeHash
) )
// Deserialize all keys. This prevents state access on invalid input. // Deserialize all keys. This prevents state access on invalid input.
for i, hexKey := range storageKeys { for i, hexKey := range storageKeys {
@ -688,51 +684,49 @@ func (s *BlockChainAPI) GetProof(ctx context.Context, address common.Address, st
return nil, err return nil, err
} }
} }
state, header, err := s.b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash) statedb, header, err := s.b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash)
if state == nil || err != nil { if statedb == nil || err != nil {
return nil, err return nil, err
} }
if storageRoot := state.GetStorageRoot(address); storageRoot != types.EmptyRootHash && storageRoot != (common.Hash{}) { codeHash := statedb.GetCodeHash(address)
id := trie.StorageTrieID(header.Root, crypto.Keccak256Hash(address.Bytes()), storageRoot) storageRoot := statedb.GetStorageRoot(address)
tr, err := trie.NewStateTrie(id, state.Database().TrieDB())
if err != nil {
return nil, err
}
storageTrie = tr
}
// If we have a storageTrie, the account exists and we must update
// the storage root hash and the code hash.
if storageTrie != nil {
storageHash = storageTrie.Hash()
codeHash = state.GetCodeHash(address)
}
// Create the proofs for the storageKeys.
for i, key := range keys {
// Output key encoding is a bit special: if the input was a 32-byte hash, it is
// returned as such. Otherwise, we apply the QUANTITY encoding mandated by the
// JSON-RPC spec for getProof. This behavior exists to preserve backwards
// compatibility with older client versions.
var outputKey string
if keyLengths[i] != 32 {
outputKey = hexutil.EncodeBig(key.Big())
} else {
outputKey = hexutil.Encode(key[:])
}
if storageTrie == nil { if len(keys) > 0 {
storageProof[i] = StorageResult{outputKey, &hexutil.Big{}, []string{}} var storageTrie state.Trie
continue if storageRoot != types.EmptyRootHash && storageRoot != (common.Hash{}) {
id := trie.StorageTrieID(header.Root, crypto.Keccak256Hash(address.Bytes()), storageRoot)
st, err := trie.NewStateTrie(id, statedb.Database().TrieDB())
if err != nil {
return nil, err
}
storageTrie = st
} }
var proof proofList // Create the proofs for the storageKeys.
if err := storageTrie.Prove(crypto.Keccak256(key.Bytes()), &proof); err != nil { for i, key := range keys {
return nil, err // Output key encoding is a bit special: if the input was a 32-byte hash, it is
// returned as such. Otherwise, we apply the QUANTITY encoding mandated by the
// JSON-RPC spec for getProof. This behavior exists to preserve backwards
// compatibility with older client versions.
var outputKey string
if keyLengths[i] != 32 {
outputKey = hexutil.EncodeBig(key.Big())
} else {
outputKey = hexutil.Encode(key[:])
}
if storageTrie == nil {
storageProof[i] = StorageResult{outputKey, &hexutil.Big{}, []string{}}
continue
}
var proof proofList
if err := storageTrie.Prove(crypto.Keccak256(key.Bytes()), &proof); err != nil {
return nil, err
}
value := (*hexutil.Big)(statedb.GetState(address, key).Big())
storageProof[i] = StorageResult{outputKey, value, proof}
} }
value := (*hexutil.Big)(state.GetState(address, key).Big())
storageProof[i] = StorageResult{outputKey, value, proof}
} }
// Create the accountProof. // Create the accountProof.
tr, err := trie.NewStateTrie(trie.StateTrieID(header.Root), state.Database().TrieDB()) tr, err := trie.NewStateTrie(trie.StateTrieID(header.Root), statedb.Database().TrieDB())
if err != nil { if err != nil {
return nil, err return nil, err
} }
@ -743,12 +737,12 @@ func (s *BlockChainAPI) GetProof(ctx context.Context, address common.Address, st
return &AccountResult{ return &AccountResult{
Address: address, Address: address,
AccountProof: accountProof, AccountProof: accountProof,
Balance: (*hexutil.Big)(state.GetBalance(address)), Balance: (*hexutil.Big)(statedb.GetBalance(address)),
CodeHash: codeHash, CodeHash: codeHash,
Nonce: hexutil.Uint64(state.GetNonce(address)), Nonce: hexutil.Uint64(statedb.GetNonce(address)),
StorageHash: storageHash, StorageHash: storageRoot,
StorageProof: storageProof, StorageProof: storageProof,
}, state.Error() }, statedb.Error()
} }
// decodeHash parses a hex-encoded 32-byte hash. The input may optionally // decodeHash parses a hex-encoded 32-byte hash. The input may optionally