public void TestFromNibblesException()
{
var b = MPTNode.NewBranch();
var r = MPTNode.NewExtension("0c".HexToBytes(), b);
var v1 = MPTNode.NewLeaf("abcd".HexToBytes()); //key=ac01
var v2 = MPTNode.NewLeaf("2222".HexToBytes()); //key=ac
var e1 = MPTNode.NewExtension(new byte[] { 0x01 }, v1);
b.Children[0] = e1;
b.Children[16] = v2;
var store = new MemoryStore();
PutToStore(store, r);
PutToStore(store, b);
PutToStore(store, e1);
PutToStore(store, v1);
PutToStore(store, v2);
var snapshot = store.GetSnapshot();
var mpt = new MPTTrie <TestKey, TestValue>(snapshot, r.Hash);
Assert.ThrowsException <FormatException>(() => mpt.Find(Array.Empty <byte>()).Count());
}
public void TestFindCantResolve()
{
var b = MPTNode.NewBranch();
var r = MPTNode.NewExtension("0a0c".HexToBytes(), b);
var v1 = MPTNode.NewLeaf("abcd".HexToBytes());//key=ac01
var v4 = MPTNode.NewLeaf(Encoding.ASCII.GetBytes("missing"));
var e1 = MPTNode.NewExtension(new byte[] { 0x01 }, v1);
var e4 = MPTNode.NewExtension(new byte[] { 0x01 }, v4);
b.Children[0] = e1;
b.Children[15] = MPTNode.NewHash(e4.Hash);
var store = new MemoryStore();
PutToStore(store, r);
PutToStore(store, b);
PutToStore(store, e1);
PutToStore(store, v1);
var snapshot = store.GetSnapshot();
var mpt = new MPTTrie <TestKey, TestValue>(snapshot, r.Hash);
Assert.ThrowsException <InvalidOperationException>(() => mpt.Find("ac".HexToBytes()).Count());
}
public void TestFind()
{
var store = new MemoryStore();
var snapshot = store.GetSnapshot();
var mpt1 = new MPTTrie <TestKey, TestValue>(snapshot, null);
var results = mpt1.Find(ReadOnlySpan <byte> .Empty).ToArray();
Assert.AreEqual(0, results.Count());
var mpt2 = new MPTTrie <TestKey, TestValue>(snapshot, null);
Assert.IsTrue(mpt2.Put(new byte[] { 0xab, 0xcd, 0xef }, new byte[] { 0x01 }));
Assert.IsTrue(mpt2.Put(new byte[] { 0xab, 0xcd, 0xe1 }, new byte[] { 0x02 }));
Assert.IsTrue(mpt2.Put(new byte[] { 0xab }, new byte[] { 0x03 }));
results = mpt2.Find(ReadOnlySpan <byte> .Empty).ToArray();
Assert.AreEqual(3, results.Count());
results = mpt2.Find(new byte[] { 0xab }).ToArray();
Assert.AreEqual(3, results.Count());
results = mpt2.Find(new byte[] { 0xab, 0xcd }).ToArray();
Assert.AreEqual(2, results.Count());
results = mpt2.Find(new byte[] { 0xac }).ToArray();
Assert.AreEqual(0, results.Count());
results = mpt2.Find(new byte[] { 0xab, 0xcd, 0xef, 0x00 }).ToArray();
Assert.AreEqual(0, results.Count());
}
public void TestTryGet()
{
var mpt = new MPTTrie(rootHash, mptdb);
var result = mpt.TryGet("ac01".HexToBytes(), out byte[] value);
Assert.IsTrue(result);
Assert.AreEqual("abcd", value.ToHexString());
result = mpt.TryGet("ac99".HexToBytes(), out value);
Assert.IsTrue(result);
Assert.AreEqual("2222", value.ToHexString());
result = mpt.TryGet("ab99".HexToBytes(), out value);
Assert.IsFalse(result);
result = mpt.TryGet("ac39".HexToBytes(), out value);
Assert.IsFalse(result);
result = mpt.TryGet("ac02".HexToBytes(), out value);
Assert.IsFalse(result);
result = mpt.TryGet("ac9910".HexToBytes(), out value);
Assert.AreEqual(false, result);
}
private string VerifyProof(UInt256 root_hash, byte[] proof)
{
var proofs = new HashSet <byte[]>();
using MemoryStream ms = new MemoryStream(proof, false);
using BinaryReader reader = new BinaryReader(ms, Utility.StrictUTF8);
var key = reader.ReadVarBytes(MPTNode.MaxKeyLength);
var count = reader.ReadVarInt();
for (ulong i = 0; i < count; i++)
{
proofs.Add(reader.ReadVarBytes());
}
var skey = key.AsSerializable <StorageKey>();
var sitem = MPTTrie <StorageKey, StorageItem> .VerifyProof(root_hash, skey, proofs);
if (sitem is null)
{
throw new RpcException(-100, "Verification failed");
}
return(Convert.ToBase64String(sitem.Value));
}
public void TestPutCantResolve()
{
var mpt = new MPTTrie <TestKey, TestValue>(mptdb.GetSnapshot(), root.Hash);
Assert.ThrowsException <InvalidOperationException>(() => mpt.Put("acf111".HexToBytes(), new byte[] { 1 }));
}
public void TestTryGetResolve()
{
var mpt = new MPTTrie <TestKey, TestValue>(mptdb.GetSnapshot(), root.Hash);
Assert.AreEqual(Encoding.ASCII.GetBytes("existing").ToHexString(), mpt["acae".HexToBytes()].ToString());
}
public StateSnapshot(IStore store)
{
snapshot = store.GetSnapshot();
Trie = new MPTTrie <StorageKey, StorageItem>(snapshot, CurrentLocalRootHash(), Settings.Default.FullState);
}
public JObject FindStates(JArray _params)
{
var root_hash = UInt256.Parse(_params[0].AsString());
if (!Settings.Default.FullState && StateStore.Singleton.CurrentLocalRootHash != root_hash)
{
throw new RpcException(-100, "Old state not supported");
}
var script_hash = UInt160.Parse(_params[1].AsString());
var prefix = Convert.FromBase64String(_params[2].AsString());
byte[] key = Array.Empty <byte>();
if (3 < _params.Count)
{
key = Convert.FromBase64String(_params[3].AsString());
}
int count = Settings.Default.MaxFindResultItems;
if (4 < _params.Count)
{
count = int.Parse(_params[4].AsString());
}
if (Settings.Default.MaxFindResultItems < count)
{
count = Settings.Default.MaxFindResultItems;
}
using var store = StateStore.Singleton.GetStoreSnapshot();
var trie = new MPTTrie <StorageKey, StorageItem>(store, root_hash);
var contract = GetHistoricalContractState(trie, script_hash);
if (contract is null)
{
throw new RpcException(-100, "Unknown contract");
}
StorageKey pkey = new()
{
Id = contract.Id,
Key = prefix,
};
StorageKey fkey = new()
{
Id = pkey.Id,
Key = key,
};
JObject json = new();
JArray jarr = new();
int i = 0;
foreach (var(ikey, ivalue) in trie.Find(pkey.ToArray(), 0 < key.Length ? fkey.ToArray() : null))
{
if (count < i)
{
break;
}
if (i < count)
{
JObject j = new();
j["key"] = Convert.ToBase64String(ikey.Key);
j["value"] = Convert.ToBase64String(ivalue.Value);
jarr.Add(j);
}
i++;
}
;
if (0 < jarr.Count)
{
json["firstProof"] = GetProof(trie, contract.Id, Convert.FromBase64String(jarr.First()["key"].AsString()));
}
if (1 < jarr.Count)
{
json["lastProof"] = GetProof(trie, contract.Id, Convert.FromBase64String(jarr.Last()["key"].AsString()));
}
json["truncated"] = count < i;
json["results"] = jarr;
return(json);
}