1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
package l2
import (
"bytes"
"encoding/binary"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/google/go-cmp/cmp"
)
// FuzzExecutionPayloadUnmarshal checks that our SSZ decoding never panics
func FuzzExecutionPayloadUnmarshal(f *testing.F) {
f.Fuzz(func(t *testing.T, data []byte) {
var payload ExecutionPayload
err := payload.UnmarshalSSZ(uint32(len(data)), bytes.NewReader(data))
if err != nil {
// not every input is a valid ExecutionPayload, that's ok. Should just not panic.
return
}
})
}
// FuzzExecutionPayloadMarshalUnmarshal checks that our SSZ encoding>decoding round trips properly
func FuzzExecutionPayloadMarshalUnmarshal(f *testing.F) {
f.Fuzz(func(t *testing.T, data []byte, a, b, c, d uint64, extraData []byte, txs uint16, txsData []byte) {
if len(data) < 32+20+32+32+256+32+32+32 {
return
}
var payload ExecutionPayload
payload.ParentHash = *(*common.Hash)(data[:32])
data = data[32:]
payload.FeeRecipient = *(*common.Address)(data[:20])
data = data[20:]
payload.StateRoot = *(*Bytes32)(data[:32])
data = data[32:]
payload.ReceiptsRoot = *(*Bytes32)(data[:32])
data = data[32:]
payload.LogsBloom = *(*Bytes256)(data[:256])
data = data[256:]
payload.PrevRandao = *(*Bytes32)(data[:32])
data = data[32:]
payload.BlockNumber = Uint64Quantity(a)
payload.GasLimit = Uint64Quantity(a)
payload.GasUsed = Uint64Quantity(a)
payload.Timestamp = Uint64Quantity(a)
if len(extraData) > 32 {
extraData = extraData[:32]
}
payload.ExtraData = extraData
payload.BaseFeePerGas.SetBytes(data[:32])
payload.BlockHash = *(*common.Hash)(data[:32])
payload.Transactions = make([]Data, txs)
for i := 0; i < int(txs); i++ {
if len(txsData) < 2 {
payload.Transactions[i] = make(Data, 0)
continue
}
txSize := binary.LittleEndian.Uint16(txsData[:2])
txsData = txsData[2:]
if int(txSize) > len(txsData) {
txSize = uint16(len(txsData))
}
payload.Transactions[i] = txsData[:txSize]
txsData = txsData[txSize:]
}
var buf bytes.Buffer
if _, err := payload.MarshalSSZ(&buf); err != nil {
t.Fatalf("failed to marshal ExecutionPayload: %v", err)
}
var roundTripped ExecutionPayload
err := roundTripped.UnmarshalSSZ(uint32(len(buf.Bytes())), bytes.NewReader(buf.Bytes()))
if err != nil {
t.Fatalf("failed to decode previously marshalled payload: %v", err)
}
if diff := cmp.Diff(payload, roundTripped); diff != "" {
t.Fatalf("The data did not round trip correctly:\n%s", diff)
}
})
}