Compare commits
6 Commits
v0.0.1
...
v0.1.0-dev
| Author | SHA1 | Date |
|---|---|---|
semantic-release-bot
|
416c6a1b74 | |
 Derrick Hammer
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127b1aa0d7
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Derrick Hammer
|
5d1bdec620
|
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Derrick Hammer
|
840dad7ad1
|
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Derrick Hammer
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24cd98bb3c
|
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Derrick Hammer
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5843acb79b
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@ -0,0 +1,13 @@
|
|||
name: Build/Publish
|
||||
|
||||
on:
|
||||
push:
|
||||
branches:
|
||||
- master
|
||||
- develop
|
||||
- develop-*
|
||||
|
||||
jobs:
|
||||
main:
|
||||
uses: lumeweb/github-node-deploy-workflow/.github/workflows/main.yml@master
|
||||
secrets: inherit
|
||||
|
|
@ -0,0 +1,5 @@
|
|||
{
|
||||
"preset": [
|
||||
"@lumeweb/node-library-preset"
|
||||
]
|
||||
}
|
||||
|
|
@ -0,0 +1,13 @@
|
|||
# [0.1.0-develop.1](https://git.lumeweb.com/LumeWeb/libethsync/compare/v0.0.1...v0.1.0-develop.1) (2023-07-11)
|
||||
|
||||
|
||||
### Bug Fixes
|
||||
|
||||
* add missing repository to package.json ([127b1aa](https://git.lumeweb.com/LumeWeb/libethsync/commit/127b1aa0d7f312ebfbc9ab1c88b595ecdc6b8e7a))
|
||||
* export createDefaultClient ([5d1bdec](https://git.lumeweb.com/LumeWeb/libethsync/commit/5d1bdec620a0e077849606860634e935cdc2bd19))
|
||||
|
||||
|
||||
### Features
|
||||
|
||||
* Initial version ([24cd98b](https://git.lumeweb.com/LumeWeb/libethsync/commit/24cd98bb3ccb888400fe9e205fc45606c934f879))
|
||||
* Initial version ([5843acb](https://git.lumeweb.com/LumeWeb/libethsync/commit/5843acb79bacca113cf08c9fd64a3edb6f97dc5c))
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,60 @@
|
|||
{
|
||||
"name": "@lumeweb/libethsync",
|
||||
"version": "0.1.0-develop.1",
|
||||
"type": "module",
|
||||
"repository": {
|
||||
"type": "git",
|
||||
"url": "gitea@git.lumeweb.com:LumeWeb/libethsync.git"
|
||||
},
|
||||
"devDependencies": {
|
||||
"@lumeweb/node-library-preset": "^0.2.7",
|
||||
"presetter": "*"
|
||||
},
|
||||
"readme": "ERROR: No README data found!",
|
||||
"scripts": {
|
||||
"prepare": "presetter bootstrap",
|
||||
"build": "run build",
|
||||
"semantic-release": "semantic-release"
|
||||
},
|
||||
"exports": {
|
||||
"./client": {
|
||||
"import": "./lib/client/index.js",
|
||||
"typings": "./lib/client/index.d.ts"
|
||||
},
|
||||
"./node": {
|
||||
"import": "./lib/node/index.js",
|
||||
"typings": "./lib/node/index.d.ts"
|
||||
}
|
||||
},
|
||||
"dependencies": {
|
||||
"@chainsafe/as-sha256": "^0.3.1",
|
||||
"@chainsafe/bls": "7.1.1",
|
||||
"@chainsafe/blst": "0.2.9",
|
||||
"@chainsafe/ssz": "0.11.1",
|
||||
"@ethereumjs/block": "4.3.0",
|
||||
"@ethereumjs/blockchain": "6.3.0",
|
||||
"@ethereumjs/common": "^3.2.0",
|
||||
"@ethereumjs/trie": "5.1.0",
|
||||
"@ethereumjs/tx": "4.2.0",
|
||||
"@ethereumjs/util": "8.1.0",
|
||||
"@ethereumjs/vm": "6.5.0",
|
||||
"@lodestar/config": "1.9.1",
|
||||
"@lodestar/light-client": "1.9.1",
|
||||
"@lodestar/params": "1.9.1",
|
||||
"@lodestar/types": "1.9.1",
|
||||
"async-mutex": "^0.4.0",
|
||||
"axios": "^1.4.0",
|
||||
"axios-retry": "^3.5.1",
|
||||
"detect-node": "^2.1.0",
|
||||
"ethereum-cryptography": "^2.0.0",
|
||||
"node-cache": "^5.1.2",
|
||||
"rlp": "^3.0.0",
|
||||
"web3-types": "^1.0.1"
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||||
},
|
||||
"files": [
|
||||
"lib"
|
||||
],
|
||||
"publishConfig": {
|
||||
"access": "public"
|
||||
}
|
||||
}
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||||
|
|
@ -0,0 +1,97 @@
|
|||
import { ClientConfig, ExecutionInfo, IProver, IStore } from "#interfaces.js";
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||||
import { POLLING_DELAY } from "#constants.js";
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||||
import {
|
||||
computeSyncPeriodAtSlot,
|
||||
getCurrentSlot,
|
||||
} from "@lodestar/light-client/utils";
|
||||
import { init } from "@chainsafe/bls/switchable";
|
||||
import { Mutex } from "async-mutex";
|
||||
import { fromHexString } from "@chainsafe/ssz";
|
||||
import { getDefaultClientConfig } from "#util.js";
|
||||
|
||||
import isNode from "detect-node";
|
||||
|
||||
export interface BaseClientOptions {
|
||||
prover: IProver;
|
||||
store?: IStore;
|
||||
}
|
||||
|
||||
export default abstract class BaseClient {
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||||
protected latestCommittee?: Uint8Array[];
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||||
protected latestBlockHash?: string;
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||||
protected config: ClientConfig = getDefaultClientConfig();
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||||
protected genesisCommittee: Uint8Array[] = this.config.genesis.committee.map(
|
||||
(pk) => fromHexString(pk),
|
||||
);
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||||
protected genesisPeriod = computeSyncPeriodAtSlot(this.config.genesis.slot);
|
||||
private genesisTime = this.config.genesis.time;
|
||||
protected booted = false;
|
||||
private syncMutex = new Mutex();
|
||||
protected options: BaseClientOptions;
|
||||
protected;
|
||||
|
||||
constructor(options: BaseClientOptions) {
|
||||
this.options = options;
|
||||
}
|
||||
|
||||
private _latestPeriod: number = -1;
|
||||
|
||||
get latestPeriod(): number {
|
||||
return this._latestPeriod;
|
||||
}
|
||||
|
||||
public get isSynced() {
|
||||
return this._latestPeriod === this.getCurrentPeriod();
|
||||
}
|
||||
|
||||
public async sync(): Promise<void> {
|
||||
await init(isNode ? "blst-native" : "herumi");
|
||||
|
||||
await this._sync();
|
||||
}
|
||||
|
||||
public getCurrentPeriod(): number {
|
||||
return computeSyncPeriodAtSlot(
|
||||
getCurrentSlot(this.config.chainConfig, this.genesisTime),
|
||||
);
|
||||
}
|
||||
|
||||
public async getNextValidExecutionInfo(
|
||||
retry: number = 10,
|
||||
): Promise<ExecutionInfo> {
|
||||
if (retry === 0)
|
||||
throw new Error(
|
||||
"no valid execution payload found in the given retry limit",
|
||||
);
|
||||
const ei = await this.getLatestExecution();
|
||||
if (ei) return ei;
|
||||
// delay for the next slot
|
||||
await new Promise((resolve) => setTimeout(resolve, POLLING_DELAY));
|
||||
return this.getNextValidExecutionInfo(retry - 1);
|
||||
}
|
||||
|
||||
protected async _sync() {
|
||||
await this.syncMutex.acquire();
|
||||
|
||||
const currentPeriod = this.getCurrentPeriod();
|
||||
if (currentPeriod > this._latestPeriod) {
|
||||
if (!this.booted) {
|
||||
this.latestCommittee = await this.syncFromGenesis();
|
||||
} else {
|
||||
this.latestCommittee = await this.syncFromLastUpdate();
|
||||
}
|
||||
this._latestPeriod = currentPeriod;
|
||||
}
|
||||
|
||||
this.syncMutex.release();
|
||||
}
|
||||
|
||||
// committee and prover index of the first honest prover
|
||||
protected abstract syncFromGenesis(): Promise<Uint8Array[]>;
|
||||
|
||||
protected abstract syncFromLastUpdate(
|
||||
startPeriod?: number,
|
||||
): Promise<Uint8Array[]>;
|
||||
|
||||
protected abstract getLatestExecution(): Promise<ExecutionInfo | null>;
|
||||
}
|
||||
|
|
@ -0,0 +1,137 @@
|
|||
import BaseClient, { BaseClientOptions } from "#baseClient.js";
|
||||
import {
|
||||
ExecutionInfo,
|
||||
IStore,
|
||||
IVerifyingProvider,
|
||||
IVerifyingProviderConstructor,
|
||||
} from "#interfaces.js";
|
||||
import { DEFAULT_BATCH_SIZE, POLLING_DELAY } from "#constants.js";
|
||||
import { IClientProver } from "#client/prover.js";
|
||||
import {
|
||||
getCommitteeHash,
|
||||
optimisticUpdateFromJSON,
|
||||
optimisticUpdateVerify,
|
||||
} from "#util.js";
|
||||
import { equalBytes } from "@noble/curves/abstract/utils.js";
|
||||
|
||||
interface Config extends BaseClientOptions {
|
||||
prover: IClientProver;
|
||||
beaconUrl: string;
|
||||
provider: IVerifyingProviderConstructor;
|
||||
rpcHandler: Function;
|
||||
}
|
||||
|
||||
export default class Client extends BaseClient {
|
||||
private provider?: IVerifyingProvider;
|
||||
protected declare options: Config;
|
||||
|
||||
constructor(options: Config) {
|
||||
super(options);
|
||||
}
|
||||
|
||||
protected async getLatestExecution(): Promise<ExecutionInfo | null> {
|
||||
const updateJSON = await this.options.prover.callback(
|
||||
"consensus_optimistic_update",
|
||||
);
|
||||
const update = optimisticUpdateFromJSON(updateJSON);
|
||||
const verify = await optimisticUpdateVerify(
|
||||
this.latestCommittee as Uint8Array[],
|
||||
update,
|
||||
);
|
||||
if (!verify.correct) {
|
||||
console.error(`Invalid Optimistic Update: ${verify.reason}`);
|
||||
return null;
|
||||
}
|
||||
console.log(
|
||||
`Optimistic update verified for slot ${updateJSON.attested_header.beacon.slot}`,
|
||||
);
|
||||
return {
|
||||
blockHash: updateJSON.attested_header.execution.block_hash,
|
||||
blockNumber: updateJSON.attested_header.execution.block_number,
|
||||
};
|
||||
}
|
||||
|
||||
async sync(): Promise<void> {
|
||||
await super.sync();
|
||||
|
||||
if (!this.provider) {
|
||||
const { blockHash, blockNumber } = await this.getNextValidExecutionInfo();
|
||||
const factory = this.options.provider;
|
||||
const provider = new factory(
|
||||
this.options.rpcHandler,
|
||||
blockNumber,
|
||||
blockHash,
|
||||
);
|
||||
this.subscribe((ei) => {
|
||||
console.log(
|
||||
`Received a new blockheader: ${ei.blockNumber} ${ei.blockHash}`,
|
||||
);
|
||||
provider.update(ei.blockNumber, ei.blockHash);
|
||||
});
|
||||
|
||||
this.provider = provider;
|
||||
this.booted = true;
|
||||
}
|
||||
}
|
||||
|
||||
protected syncFromGenesis(): Promise<Uint8Array[]> {
|
||||
return Promise.resolve([]);
|
||||
}
|
||||
|
||||
protected async syncFromLastUpdate(
|
||||
startPeriod = this.latestPeriod,
|
||||
): Promise<Uint8Array[]> {
|
||||
const currentPeriod = this.getCurrentPeriod();
|
||||
|
||||
let lastCommitteeHash: Uint8Array = getCommitteeHash(this.genesisCommittee);
|
||||
|
||||
for (let period = startPeriod + 1; period <= currentPeriod; period++) {
|
||||
try {
|
||||
lastCommitteeHash = await this.options.prover.getCommitteeHash(
|
||||
period,
|
||||
currentPeriod,
|
||||
DEFAULT_BATCH_SIZE,
|
||||
);
|
||||
} catch (e: any) {
|
||||
throw new Error(
|
||||
`failed to fetch committee hash for prover at period(${period}): ${e.meessage}`,
|
||||
);
|
||||
}
|
||||
}
|
||||
return this.getCommittee(currentPeriod, lastCommitteeHash);
|
||||
}
|
||||
|
||||
private async subscribe(callback: (ei: ExecutionInfo) => void) {
|
||||
setInterval(async () => {
|
||||
try {
|
||||
await this._sync();
|
||||
const ei = await this.getLatestExecution();
|
||||
if (ei && ei.blockHash !== this.latestBlockHash) {
|
||||
this.latestBlockHash = ei.blockHash;
|
||||
return await callback(ei);
|
||||
}
|
||||
} catch (e) {
|
||||
console.error(e);
|
||||
}
|
||||
}, POLLING_DELAY);
|
||||
}
|
||||
|
||||
private async getCommittee(
|
||||
period: number,
|
||||
expectedCommitteeHash: Uint8Array | null,
|
||||
): Promise<Uint8Array[]> {
|
||||
if (period === this.genesisPeriod) {
|
||||
return this.genesisCommittee;
|
||||
}
|
||||
if (!expectedCommitteeHash) {
|
||||
throw new Error("expectedCommitteeHash required");
|
||||
}
|
||||
const committee = await this.options.prover.getCommittee(period);
|
||||
const committeeHash = getCommitteeHash(committee);
|
||||
if (!equalBytes(committeeHash, expectedCommitteeHash as Uint8Array)) {
|
||||
throw new Error("prover responded with an incorrect committee");
|
||||
}
|
||||
|
||||
return committee;
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,19 @@
|
|||
import Client from "./client.js";
|
||||
import Prover, { IClientProver, ProverRequestCallback } from "./prover.js";
|
||||
import VerifyingProvider from "./verifyingProvider.js";
|
||||
|
||||
function createDefaultClient(
|
||||
beaconUrl: string,
|
||||
proverHandler: ProverRequestCallback,
|
||||
rpcHandler: Function,
|
||||
): Client {
|
||||
return new Client({
|
||||
prover: new Prover(proverHandler),
|
||||
beaconUrl,
|
||||
provider: VerifyingProvider,
|
||||
rpcHandler,
|
||||
});
|
||||
}
|
||||
|
||||
export { Client, Prover, VerifyingProvider, createDefaultClient };
|
||||
export { IClientProver, ProverRequestCallback };
|
||||
|
|
@ -0,0 +1,73 @@
|
|||
import {
|
||||
ConsensusCommitteeHashesRequest,
|
||||
ConsensusCommitteePeriodRequest,
|
||||
IProver,
|
||||
} from "#interfaces.js";
|
||||
import { CommitteeSSZ, HashesSSZ } from "#ssz.js";
|
||||
import { LightClientUpdate } from "#types.js";
|
||||
import * as capella from "@lodestar/types/capella";
|
||||
|
||||
export type ProverRequestCallback = (
|
||||
action: string,
|
||||
args?: ConsensusCommitteeHashesRequest | ConsensusCommitteePeriodRequest,
|
||||
) => any;
|
||||
|
||||
export interface IClientProver extends IProver {
|
||||
get callback(): ProverRequestCallback;
|
||||
getCommittee(period: number | "latest"): Promise<Uint8Array[]>;
|
||||
getSyncUpdate(period: number): Promise<LightClientUpdate>;
|
||||
getCommitteeHash(
|
||||
period: number,
|
||||
currentPeriod: number,
|
||||
cacheCount: number,
|
||||
): Promise<Uint8Array>;
|
||||
}
|
||||
|
||||
export default class Prover implements IClientProver {
|
||||
cachedHashes: Map<number, Uint8Array> = new Map();
|
||||
|
||||
constructor(callback: ProverRequestCallback) {
|
||||
this._callback = callback;
|
||||
}
|
||||
|
||||
private _callback: ProverRequestCallback;
|
||||
|
||||
get callback(): ProverRequestCallback {
|
||||
return this._callback;
|
||||
}
|
||||
|
||||
async getCommittee(period: number | "latest"): Promise<Uint8Array[]> {
|
||||
const res = await this.callback("consensus_committee_period", { period });
|
||||
return CommitteeSSZ.deserialize(Uint8Array.from(Object.values(res)));
|
||||
}
|
||||
|
||||
async getSyncUpdate(period: number): Promise<LightClientUpdate> {
|
||||
const res = await this.callback("consensus_committee_period", { period });
|
||||
return capella.ssz.LightClientUpdate.deserialize(
|
||||
Uint8Array.from(Object.values(res)),
|
||||
);
|
||||
}
|
||||
|
||||
async _getHashes(startPeriod: number, count: number): Promise<Uint8Array[]> {
|
||||
const res = await this.callback("consensus_committee_hashes", {
|
||||
start: startPeriod,
|
||||
count,
|
||||
});
|
||||
return HashesSSZ.deserialize(Uint8Array.from(Object.values(res)));
|
||||
}
|
||||
|
||||
async getCommitteeHash(
|
||||
period: number,
|
||||
currentPeriod: number,
|
||||
cacheCount: number,
|
||||
): Promise<Uint8Array> {
|
||||
const _count = Math.min(currentPeriod - period + 1, cacheCount);
|
||||
if (!this.cachedHashes.has(period)) {
|
||||
const vals = await this._getHashes(period, _count);
|
||||
for (let i = 0; i < _count; i++) {
|
||||
this.cachedHashes.set(period + i, vals[i]);
|
||||
}
|
||||
}
|
||||
return this.cachedHashes.get(period)!;
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,81 @@
|
|||
export type RPCRequest = {
|
||||
method: string;
|
||||
params: any[];
|
||||
};
|
||||
|
||||
export type RPCRequestRaw = RPCRequest & {
|
||||
jsonrpc: string;
|
||||
id: string;
|
||||
};
|
||||
|
||||
export type RPCResponse = {
|
||||
success: boolean;
|
||||
result: any;
|
||||
};
|
||||
|
||||
export class RPC {
|
||||
private callback: Function;
|
||||
|
||||
constructor(callback: Function) {
|
||||
this.callback = callback;
|
||||
}
|
||||
|
||||
async request(request: RPCRequest) {
|
||||
return await this._retryRequest(request);
|
||||
}
|
||||
|
||||
async requestBatch(requests: RPCRequest[]) {
|
||||
const res: RPCResponse[] = [];
|
||||
for (const request of requests) {
|
||||
const r = await this._retryRequest(request);
|
||||
res.push(r);
|
||||
}
|
||||
return res;
|
||||
}
|
||||
|
||||
private async _retryRequest(
|
||||
_request: RPCRequest,
|
||||
retry = 5,
|
||||
): Promise<RPCResponse> {
|
||||
const request = {
|
||||
..._request,
|
||||
jsonrpc: "2.0",
|
||||
id: this.generateId(),
|
||||
};
|
||||
|
||||
for (let i = retry; i > 0; i--) {
|
||||
const res = await this._request(request);
|
||||
if (res.success) {
|
||||
return res;
|
||||
} else if (i == 1) {
|
||||
console.error(
|
||||
`RPC batch request failed after maximum retries: ${JSON.stringify(
|
||||
request,
|
||||
null,
|
||||
2,
|
||||
)} ${JSON.stringify(res, null, 2)}`,
|
||||
);
|
||||
}
|
||||
}
|
||||
throw new Error("RPC request failed");
|
||||
}
|
||||
|
||||
private generateId(): string {
|
||||
return Math.floor(Math.random() * 2 ** 64).toFixed();
|
||||
}
|
||||
|
||||
protected async _request(request: RPCRequestRaw): Promise<RPCResponse> {
|
||||
try {
|
||||
const response = await this.callback(request);
|
||||
return {
|
||||
success: !response.error,
|
||||
result: response.error || response.result,
|
||||
};
|
||||
} catch (e) {
|
||||
return {
|
||||
success: false,
|
||||
result: { message: `request failed: ${e}` },
|
||||
};
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,65 @@
|
|||
import { Bytes32 } from "#types.js";
|
||||
|
||||
export type AddressHex = string;
|
||||
export type HexString = string;
|
||||
export type Bytes = string;
|
||||
export type AccountResponse = GetProof;
|
||||
export type CodeResponse = string;
|
||||
export type AccessList = { address: AddressHex; storageKeys: Bytes32[] }[];
|
||||
|
||||
export interface RPCTx {
|
||||
from?: string;
|
||||
to?: string;
|
||||
gas?: string;
|
||||
gasPrice?: string;
|
||||
maxFeePerGas?: string;
|
||||
maxPriorityFeePerGas?: string;
|
||||
accessList?: AccessList;
|
||||
value?: string;
|
||||
data?: string;
|
||||
}
|
||||
|
||||
export type JSONRPCReceipt = {
|
||||
transactionHash: string;
|
||||
transactionIndex: string;
|
||||
blockHash: string;
|
||||
blockNumber: string;
|
||||
from: string;
|
||||
to: string | null;
|
||||
cumulativeGasUsed: string;
|
||||
effectiveGasPrice: string;
|
||||
gasUsed: string;
|
||||
contractAddress: string | null;
|
||||
logs: JSONRPCLog[];
|
||||
logsBloom: string;
|
||||
|
||||
root?: string;
|
||||
status?: string;
|
||||
};
|
||||
|
||||
export type JSONRPCLog = {
|
||||
removed: boolean;
|
||||
logIndex: string | null;
|
||||
transactionIndex: string | null;
|
||||
transactionHash: string | null;
|
||||
blockHash: string | null;
|
||||
blockNumber: string | null;
|
||||
address: string;
|
||||
data: string;
|
||||
topics: string[];
|
||||
};
|
||||
export interface GetProof {
|
||||
address: string;
|
||||
balance: string;
|
||||
codeHash: string;
|
||||
nonce: string;
|
||||
storageHash: string;
|
||||
accountProof: string[];
|
||||
storageProof: StorageProof[];
|
||||
}
|
||||
|
||||
export interface StorageProof {
|
||||
key: string;
|
||||
value: string;
|
||||
proof: string[];
|
||||
}
|
||||
|
|
@ -0,0 +1,70 @@
|
|||
import {
|
||||
Account,
|
||||
bigIntToHex,
|
||||
setLengthLeft,
|
||||
toBuffer,
|
||||
} from "@ethereumjs/util";
|
||||
import { BlockData, HeaderData } from "@ethereumjs/block";
|
||||
import {
|
||||
AccessListEIP2930TxData,
|
||||
FeeMarketEIP1559TxData,
|
||||
TxData,
|
||||
} from "@ethereumjs/tx";
|
||||
|
||||
const isTruthy = (val: any) => !!val;
|
||||
|
||||
// TODO: fix blockInfo type
|
||||
export function headerDataFromWeb3Response(blockInfo: any): HeaderData {
|
||||
return {
|
||||
parentHash: blockInfo.parentHash,
|
||||
uncleHash: blockInfo.sha3Uncles,
|
||||
coinbase: blockInfo.miner,
|
||||
stateRoot: blockInfo.stateRoot,
|
||||
transactionsTrie: blockInfo.transactionsRoot,
|
||||
receiptTrie: blockInfo.receiptsRoot,
|
||||
logsBloom: blockInfo.logsBloom,
|
||||
difficulty: BigInt(blockInfo.difficulty),
|
||||
number: BigInt(blockInfo.number),
|
||||
gasLimit: BigInt(blockInfo.gasLimit),
|
||||
gasUsed: BigInt(blockInfo.gasUsed),
|
||||
timestamp: BigInt(blockInfo.timestamp),
|
||||
extraData: blockInfo.extraData,
|
||||
mixHash: (blockInfo as any).mixHash, // some reason the types are not up to date :(
|
||||
nonce: blockInfo.nonce,
|
||||
baseFeePerGas: blockInfo.baseFeePerGas
|
||||
? BigInt(blockInfo.baseFeePerGas)
|
||||
: undefined,
|
||||
};
|
||||
}
|
||||
|
||||
export function txDataFromWeb3Response(
|
||||
txInfo: any,
|
||||
): TxData | AccessListEIP2930TxData | FeeMarketEIP1559TxData {
|
||||
return {
|
||||
...txInfo,
|
||||
data: txInfo.input,
|
||||
gasPrice: BigInt(txInfo.gasPrice),
|
||||
gasLimit: txInfo.gas,
|
||||
to: isTruthy(txInfo.to)
|
||||
? setLengthLeft(toBuffer(txInfo.to), 20)
|
||||
: undefined,
|
||||
value: BigInt(txInfo.value),
|
||||
maxFeePerGas: isTruthy(txInfo.maxFeePerGas)
|
||||
? BigInt(txInfo.maxFeePerGas)
|
||||
: undefined,
|
||||
maxPriorityFeePerGas: isTruthy(txInfo.maxPriorityFeePerGas)
|
||||
? BigInt(txInfo.maxPriorityFeePerGas)
|
||||
: undefined,
|
||||
};
|
||||
}
|
||||
|
||||
export function blockDataFromWeb3Response(blockInfo: any): BlockData {
|
||||
return {
|
||||
header: headerDataFromWeb3Response(blockInfo),
|
||||
transactions: blockInfo.transactions.map(txDataFromWeb3Response),
|
||||
};
|
||||
}
|
||||
|
||||
export { bigIntToHex };
|
||||
|
||||
export const emptyAccountSerialize = new Account().serialize();
|
||||
|
|
@ -0,0 +1,716 @@
|
|||
import { IVerifyingProvider } from "#interfaces.js";
|
||||
|
||||
import _ from "lodash";
|
||||
import { Trie } from "@ethereumjs/trie";
|
||||
import rlp from "rlp";
|
||||
import { Chain, Common } from "@ethereumjs/common";
|
||||
import {
|
||||
Account,
|
||||
Address,
|
||||
bufferToHex,
|
||||
KECCAK256_NULL_S,
|
||||
setLengthLeft,
|
||||
toBuffer,
|
||||
toType,
|
||||
TypeOutput,
|
||||
} from "@ethereumjs/util";
|
||||
import { VM } from "@ethereumjs/vm";
|
||||
import { Blockchain } from "@ethereumjs/blockchain";
|
||||
import { TransactionFactory } from "@ethereumjs/tx";
|
||||
import { Block, BlockHeader } from "@ethereumjs/block";
|
||||
|
||||
import { Bytes32 } from "#types.js";
|
||||
import type { BlockNumberOrTag } from "web3-types";
|
||||
import {
|
||||
DEFAULT_BLOCK_PARAMETER,
|
||||
MAX_BLOCK_FUTURE,
|
||||
MAX_BLOCK_HISTORY,
|
||||
ZERO_ADDR,
|
||||
} from "#constants.js";
|
||||
import {
|
||||
bigIntToHex,
|
||||
blockDataFromWeb3Response,
|
||||
emptyAccountSerialize,
|
||||
headerDataFromWeb3Response,
|
||||
} from "./utils.js";
|
||||
import {
|
||||
AccessList,
|
||||
AccountResponse,
|
||||
AddressHex,
|
||||
Bytes,
|
||||
CodeResponse,
|
||||
GetProof,
|
||||
HexString,
|
||||
JSONRPCReceipt,
|
||||
RPCTx,
|
||||
} from "./types.js";
|
||||
import { keccak256 } from "ethereum-cryptography/keccak";
|
||||
import { fromHexString } from "@chainsafe/ssz";
|
||||
import { RPC } from "#client/rpc.js";
|
||||
|
||||
export default class VerifyingProvider implements IVerifyingProvider {
|
||||
common: Common;
|
||||
vm: VM | null = null;
|
||||
private blockHashes: { [blockNumberHex: string]: Bytes32 } = {};
|
||||
private blockPromises: {
|
||||
[blockNumberHex: string]: { promise: Promise<void>; resolve: () => void };
|
||||
} = {};
|
||||
private blockHeaders: { [blockHash: string]: BlockHeader } = {};
|
||||
private latestBlockNumber: number;
|
||||
private _methods: Map<string, Function> = new Map<string, Function>(
|
||||
Object.entries({
|
||||
eth_getBalance: this.getBalance,
|
||||
eth_blockNumber: this.blockNumber,
|
||||
eth_chainId: this.chainId,
|
||||
eth_getCode: this.getCode,
|
||||
eth_getTransactionCount: this.getTransactionCount,
|
||||
eth_call: this.call,
|
||||
eth_estimateGas: this.estimateGas,
|
||||
eth_sendRawTransaction: this.sendRawTransaction,
|
||||
eth_getTransactionReceipt: this.getTransactionReceipt,
|
||||
}),
|
||||
);
|
||||
private rpc: RPC;
|
||||
|
||||
constructor(
|
||||
rpcHandler: Function,
|
||||
blockNumber: number,
|
||||
blockHash: Bytes32,
|
||||
chain: bigint | Chain = Chain.Mainnet,
|
||||
) {
|
||||
this.common = new Common({
|
||||
chain,
|
||||
});
|
||||
const _blockNumber = BigInt(blockNumber);
|
||||
this.latestBlockNumber = blockNumber;
|
||||
this.blockHashes[bigIntToHex(_blockNumber)] = blockHash;
|
||||
this.rpc = new RPC(rpcHandler);
|
||||
}
|
||||
|
||||
update(blockNumber: number, blockHash: Bytes32) {
|
||||
const blockNumberHex = bigIntToHex(BigInt(blockNumber));
|
||||
if (
|
||||
blockNumberHex in this.blockHashes &&
|
||||
this.blockHashes[blockNumberHex] !== blockHash
|
||||
) {
|
||||
console.log(
|
||||
"Overriding an existing verified blockhash. Possibly the chain had a reorg",
|
||||
);
|
||||
}
|
||||
const latestBlockNumber = this.latestBlockNumber;
|
||||
this.latestBlockNumber = blockNumber;
|
||||
this.blockHashes[blockNumberHex] = blockHash;
|
||||
if (blockNumber > latestBlockNumber) {
|
||||
for (
|
||||
let b = BigInt(latestBlockNumber) + BigInt(1);
|
||||
b <= blockNumber;
|
||||
b++
|
||||
) {
|
||||
const bHex = bigIntToHex(b);
|
||||
if (bHex in this.blockPromises) {
|
||||
this.blockPromises[bHex].resolve();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
public async rpcMethod(method: string, params: any) {
|
||||
if (this._methods.has(method)) {
|
||||
return this._methods.get(method)?.bind(this)(...params);
|
||||
}
|
||||
|
||||
throw new Error("method not found");
|
||||
}
|
||||
|
||||
private async getBalance(
|
||||
addressHex: AddressHex,
|
||||
blockOpt: BlockNumberOrTag = DEFAULT_BLOCK_PARAMETER,
|
||||
) {
|
||||
const header = await this.getBlockHeader(blockOpt);
|
||||
const address = Address.fromString(addressHex);
|
||||
const { result: proof, success } = await this.rpc.request({
|
||||
method: "eth_getProof",
|
||||
params: [addressHex, [], bigIntToHex(header.number)],
|
||||
});
|
||||
if (!success) {
|
||||
throw new Error(`RPC request failed`);
|
||||
}
|
||||
const isAccountCorrect = await this.verifyProof(
|
||||
address,
|
||||
[],
|
||||
header.stateRoot,
|
||||
proof,
|
||||
);
|
||||
if (!isAccountCorrect) {
|
||||
throw new Error("Invalid account proof provided by the RPC");
|
||||
}
|
||||
|
||||
return bigIntToHex(proof.balance);
|
||||
}
|
||||
|
||||
private async blockNumber(): Promise<HexString> {
|
||||
return bigIntToHex(BigInt(this.latestBlockNumber));
|
||||
}
|
||||
|
||||
private async chainId(): Promise<HexString> {
|
||||
return bigIntToHex(this.common.chainId());
|
||||
}
|
||||
|
||||
private async getCode(
|
||||
addressHex: AddressHex,
|
||||
blockOpt: BlockNumberOrTag = DEFAULT_BLOCK_PARAMETER,
|
||||
): Promise<HexString> {
|
||||
const header = await this.getBlockHeader(blockOpt);
|
||||
const res = await this.rpc.requestBatch([
|
||||
{
|
||||
method: "eth_getProof",
|
||||
params: [addressHex, [], bigIntToHex(header.number)],
|
||||
},
|
||||
{
|
||||
method: "eth_getCode",
|
||||
params: [addressHex, bigIntToHex(header.number)],
|
||||
},
|
||||
]);
|
||||
|
||||
if (res.some((r) => !r.success)) {
|
||||
throw new Error(`RPC request failed`);
|
||||
}
|
||||
const [accountProof, code] = [res[0].result, res[1].result];
|
||||
|
||||
const address = Address.fromString(addressHex);
|
||||
const isAccountCorrect = await this.verifyProof(
|
||||
address,
|
||||
[],
|
||||
header.stateRoot,
|
||||
accountProof,
|
||||
);
|
||||
if (!isAccountCorrect) {
|
||||
throw new Error(`invalid account proof provided by the RPC`);
|
||||
}
|
||||
|
||||
const isCodeCorrect = await this.verifyCodeHash(
|
||||
code,
|
||||
accountProof.codeHash,
|
||||
);
|
||||
if (!isCodeCorrect) {
|
||||
throw new Error(
|
||||
`code provided by the RPC doesn't match the account's codeHash`,
|
||||
);
|
||||
}
|
||||
|
||||
return code;
|
||||
}
|
||||
|
||||
private async getTransactionCount(
|
||||
addressHex: AddressHex,
|
||||
blockOpt: BlockNumberOrTag = DEFAULT_BLOCK_PARAMETER,
|
||||
): Promise<HexString> {
|
||||
const header = await this.getBlockHeader(blockOpt);
|
||||
const address = Address.fromString(addressHex);
|
||||
const { result: proof, success } = await this.rpc.request({
|
||||
method: "eth_getProof",
|
||||
params: [addressHex, [], bigIntToHex(header.number)],
|
||||
});
|
||||
if (!success) {
|
||||
throw new Error(`RPC request failed`);
|
||||
}
|
||||
|
||||
const isAccountCorrect = await this.verifyProof(
|
||||
address,
|
||||
[],
|
||||
header.stateRoot,
|
||||
proof,
|
||||
);
|
||||
if (!isAccountCorrect) {
|
||||
throw new Error(`invalid account proof provided by the RPC`);
|
||||
}
|
||||
|
||||
return bigIntToHex(proof.nonce.toString());
|
||||
}
|
||||
|
||||
private async call(
|
||||
transaction: RPCTx,
|
||||
blockOpt: BlockNumberOrTag = DEFAULT_BLOCK_PARAMETER,
|
||||
) {
|
||||
try {
|
||||
this.validateTx(transaction);
|
||||
} catch (e: any) {
|
||||
throw new Error((e as Error).message);
|
||||
}
|
||||
|
||||
const header = await this.getBlockHeader(blockOpt);
|
||||
const vm = await this.getVM(transaction, header);
|
||||
const {
|
||||
from,
|
||||
to,
|
||||
gas: gasLimit,
|
||||
gasPrice,
|
||||
maxPriorityFeePerGas,
|
||||
value,
|
||||
data,
|
||||
} = transaction;
|
||||
|
||||
try {
|
||||
const runCallOpts = {
|
||||
caller: from ? Address.fromString(from) : undefined,
|
||||
to: to ? Address.fromString(to) : undefined,
|
||||
gasLimit: toType(gasLimit, TypeOutput.BigInt),
|
||||
gasPrice: toType(gasPrice || maxPriorityFeePerGas, TypeOutput.BigInt),
|
||||
value: toType(value, TypeOutput.BigInt),
|
||||
data: data ? toBuffer(data) : undefined,
|
||||
block: { header },
|
||||
};
|
||||
const { execResult } = await vm.evm.runCall(runCallOpts);
|
||||
|
||||
return bufferToHex(execResult.returnValue);
|
||||
} catch (error: any) {
|
||||
throw new Error(error.message.toString());
|
||||
}
|
||||
}
|
||||
|
||||
private async estimateGas(
|
||||
transaction: RPCTx,
|
||||
blockOpt: BlockNumberOrTag = DEFAULT_BLOCK_PARAMETER,
|
||||
) {
|
||||
try {
|
||||
this.validateTx(transaction);
|
||||
} catch (e) {
|
||||
throw new Error((e as Error).message);
|
||||
}
|
||||
const header = await this.getBlockHeader(blockOpt);
|
||||
|
||||
if (transaction.gas == undefined) {
|
||||
// If no gas limit is specified use the last block gas limit as an upper bound.
|
||||
transaction.gas = bigIntToHex(header.gasLimit);
|
||||
}
|
||||
|
||||
const txType = BigInt(
|
||||
transaction.maxFeePerGas || transaction.maxPriorityFeePerGas
|
||||
? 2
|
||||
: transaction.accessList
|
||||
? 1
|
||||
: 0,
|
||||
);
|
||||
if (txType == BigInt(2)) {
|
||||
transaction.maxFeePerGas =
|
||||
transaction.maxFeePerGas || bigIntToHex(header.baseFeePerGas!);
|
||||
} else {
|
||||
if (
|
||||
transaction.gasPrice == undefined ||
|
||||
BigInt(transaction.gasPrice) === BigInt(0)
|
||||
) {
|
||||
transaction.gasPrice = bigIntToHex(header.baseFeePerGas!);
|
||||
}
|
||||
}
|
||||
|
||||
const txData = {
|
||||
...transaction,
|
||||
type: bigIntToHex(txType),
|
||||
gasLimit: transaction.gas,
|
||||
};
|
||||
const tx = TransactionFactory.fromTxData(txData, {
|
||||
common: this.common,
|
||||
freeze: false,
|
||||
});
|
||||
|
||||
const vm = await this.getVM(transaction, header);
|
||||
|
||||
// set from address
|
||||
const from = transaction.from
|
||||
? Address.fromString(transaction.from)
|
||||
: Address.zero();
|
||||
tx.getSenderAddress = () => {
|
||||
return from;
|
||||
};
|
||||
|
||||
try {
|
||||
const { totalGasSpent } = await vm.runTx({
|
||||
tx,
|
||||
skipNonce: true,
|
||||
skipBalance: true,
|
||||
skipBlockGasLimitValidation: true,
|
||||
block: { header } as any,
|
||||
});
|
||||
return bigIntToHex(totalGasSpent);
|
||||
} catch (error: any) {
|
||||
throw new Error(error.message.toString());
|
||||
}
|
||||
}
|
||||
|
||||
private async sendRawTransaction(signedTx: string): Promise<string> {
|
||||
// TODO: brodcast tx directly to the mem pool?
|
||||
const { success } = await this.rpc.request({
|
||||
method: "eth_sendRawTransaction",
|
||||
params: [signedTx],
|
||||
});
|
||||
|
||||
if (!success) {
|
||||
throw new Error(`RPC request failed`);
|
||||
}
|
||||
|
||||
const tx = TransactionFactory.fromSerializedData(toBuffer(signedTx), {
|
||||
common: this.common,
|
||||
});
|
||||
return bufferToHex(tx.hash());
|
||||
}
|
||||
|
||||
private async getTransactionReceipt(
|
||||
txHash: Bytes32,
|
||||
): Promise<JSONRPCReceipt | null> {
|
||||
const { result: receipt, success } = await this.rpc.request({
|
||||
method: "eth_getTransactionReceipt",
|
||||
params: [txHash],
|
||||
});
|
||||
if (!(success && receipt)) {
|
||||
return null;
|
||||
}
|
||||
const header = await this.getBlockHeader(receipt.blockNumber);
|
||||
const block = await this.getBlock(header);
|
||||
const index = block.transactions.findIndex(
|
||||
(tx) => bufferToHex(tx.hash()) === txHash.toLowerCase(),
|
||||
);
|
||||
if (index === -1) {
|
||||
throw new Error("the recipt provided by the RPC is invalid");
|
||||
}
|
||||
const tx = block.transactions[index];
|
||||
|
||||
return {
|
||||
transactionHash: txHash,
|
||||
transactionIndex: bigIntToHex(BigInt(index)),
|
||||
blockHash: bufferToHex(block.hash()),
|
||||
blockNumber: bigIntToHex(block.header.number),
|
||||
from: tx.getSenderAddress().toString(),
|
||||
to: tx.to?.toString() ?? null,
|
||||
cumulativeGasUsed: "0x0",
|
||||
effectiveGasPrice: "0x0",
|
||||
gasUsed: "0x0",
|
||||
contractAddress: null,
|
||||
logs: [],
|
||||
logsBloom: "0x0",
|
||||
status: BigInt(receipt.status) ? "0x1" : "0x0", // unverified!!
|
||||
};
|
||||
}
|
||||
|
||||
private async getVMCopy(): Promise<VM> {
|
||||
if (this.vm === null) {
|
||||
const blockchain = await Blockchain.create({ common: this.common });
|
||||
// path the blockchain to return the correct blockhash
|
||||
(blockchain as any).getBlock = async (blockId: number) => {
|
||||
const _hash = toBuffer(await this.getBlockHash(BigInt(blockId)));
|
||||
return {
|
||||
hash: () => _hash,
|
||||
};
|
||||
};
|
||||
this.vm = await VM.create({ common: this.common, blockchain });
|
||||
}
|
||||
return await this.vm!.copy();
|
||||
}
|
||||
|
||||
private async getVM(tx: RPCTx, header: BlockHeader): Promise<VM> {
|
||||
// forcefully set gasPrice to 0 to avoid not enough balance error
|
||||
const _tx = {
|
||||
to: tx.to,
|
||||
from: tx.from ? tx.from : ZERO_ADDR,
|
||||
data: tx.data,
|
||||
value: tx.value,
|
||||
gasPrice: "0x0",
|
||||
gas: tx.gas ? tx.gas : bigIntToHex(header.gasLimit!),
|
||||
};
|
||||
const { result, success } = await this.rpc.request({
|
||||
method: "eth_createAccessList",
|
||||
params: [_tx, bigIntToHex(header.number)],
|
||||
});
|
||||
|
||||
if (!success) {
|
||||
throw new Error(`RPC request failed`);
|
||||
}
|
||||
|
||||
const accessList = result.accessList as AccessList;
|
||||
accessList.push({ address: _tx.from, storageKeys: [] });
|
||||
if (_tx.to && !accessList.some((a) => a.address.toLowerCase() === _tx.to)) {
|
||||
accessList.push({ address: _tx.to, storageKeys: [] });
|
||||
}
|
||||
|
||||
const vm = await this.getVMCopy();
|
||||
await vm.stateManager.checkpoint();
|
||||
|
||||
const requests = accessList
|
||||
.map((access) => {
|
||||
return [
|
||||
{
|
||||
method: "eth_getProof",
|
||||
params: [
|
||||
access.address,
|
||||
access.storageKeys,
|
||||
bigIntToHex(header.number),
|
||||
],
|
||||
},
|
||||
{
|
||||
method: "eth_getCode",
|
||||
params: [access.address, bigIntToHex(header.number)],
|
||||
},
|
||||
];
|
||||
})
|
||||
.flat();
|
||||
const rawResponse = await this.rpc.requestBatch(requests);
|
||||
if (rawResponse.some((r: any) => !r.success)) {
|
||||
throw new Error(`RPC request failed`);
|
||||
}
|
||||
const responses = rawResponse
|
||||
.map((r: any) => r.result)
|
||||
.reduce(
|
||||
(acc, curr, idx, arr) =>
|
||||
idx % 2 === 0 ? acc.push([curr, arr[idx + 1]]) : acc,
|
||||
[],
|
||||
) as [AccountResponse, CodeResponse][];
|
||||
|
||||
for (let i = 0; i < accessList.length; i++) {
|
||||
const { address: addressHex, storageKeys } = accessList[i];
|
||||
const [accountProof, code] = responses[i];
|
||||
const {
|
||||
nonce,
|
||||
balance,
|
||||
codeHash,
|
||||
storageProof: storageAccesses,
|
||||
} = accountProof;
|
||||
const address = Address.fromString(addressHex);
|
||||
|
||||
const isAccountCorrect = await this.verifyProof(
|
||||
address,
|
||||
storageKeys,
|
||||
header.stateRoot,
|
||||
accountProof,
|
||||
);
|
||||
if (!isAccountCorrect) {
|
||||
throw new Error(`invalid account proof provided by the RPC`);
|
||||
}
|
||||
|
||||
const isCodeCorrect = await this.verifyCodeHash(code, codeHash);
|
||||
if (!isCodeCorrect) {
|
||||
throw new Error(
|
||||
`code provided by the RPC doesn't match the account's codeHash`,
|
||||
);
|
||||
}
|
||||
|
||||
const account = Account.fromAccountData({
|
||||
nonce: BigInt(nonce),
|
||||
balance: BigInt(balance),
|
||||
codeHash,
|
||||
});
|
||||
|
||||
await vm.stateManager.putAccount(address, account);
|
||||
|
||||
for (let storageAccess of storageAccesses) {
|
||||
await vm.stateManager.putContractStorage(
|
||||
address,
|
||||
setLengthLeft(toBuffer(storageAccess.key), 32),
|
||||
setLengthLeft(toBuffer(storageAccess.value), 32),
|
||||
);
|
||||
}
|
||||
|
||||
if (code !== "0x")
|
||||
await vm.stateManager.putContractCode(address, toBuffer(code));
|
||||
}
|
||||
await vm.stateManager.commit();
|
||||
return vm;
|
||||
}
|
||||
private async getBlockHeader(
|
||||
blockOpt: BlockNumberOrTag,
|
||||
): Promise<BlockHeader> {
|
||||
const blockNumber = this.getBlockNumberByBlockNumberOrTag(blockOpt);
|
||||
await this.waitForBlockNumber(blockNumber);
|
||||
const blockHash = await this.getBlockHash(blockNumber);
|
||||
return this.getBlockHeaderByHash(blockHash);
|
||||
}
|
||||
private getBlockNumberByBlockNumberOrTag(blockOpt: BlockNumberOrTag): bigint {
|
||||
// TODO: add support for blockOpts below
|
||||
if (
|
||||
typeof blockOpt === "string" &&
|
||||
["pending", "earliest", "finalized", "safe"].includes(blockOpt)
|
||||
) {
|
||||
throw new Error(`"pending" is not yet supported`);
|
||||
} else if (blockOpt === "latest") {
|
||||
return BigInt(this.latestBlockNumber);
|
||||
} else {
|
||||
const blockNumber = BigInt(blockOpt as any);
|
||||
if (blockNumber > BigInt(this.latestBlockNumber) + MAX_BLOCK_FUTURE) {
|
||||
throw new Error("specified block is too far in future");
|
||||
} else if (blockNumber + MAX_BLOCK_HISTORY < this.latestBlockNumber) {
|
||||
throw new Error(
|
||||
`specified block cannot older that ${MAX_BLOCK_HISTORY}`,
|
||||
);
|
||||
}
|
||||
return blockNumber;
|
||||
}
|
||||
}
|
||||
private async waitForBlockNumber(blockNumber: bigint) {
|
||||
if (blockNumber <= this.latestBlockNumber) return;
|
||||
console.log(`waiting for blockNumber ${blockNumber}`);
|
||||
const blockNumberHex = bigIntToHex(blockNumber);
|
||||
if (!(blockNumberHex in this.blockPromises)) {
|
||||
let r: () => void = () => {};
|
||||
const p = new Promise<void>((resolve) => {
|
||||
r = resolve;
|
||||
});
|
||||
this.blockPromises[blockNumberHex] = {
|
||||
promise: p,
|
||||
resolve: r,
|
||||
};
|
||||
}
|
||||
return this.blockPromises[blockNumberHex].promise;
|
||||
}
|
||||
|
||||
private async getBlockHeaderByHash(blockHash: Bytes32) {
|
||||
if (!this.blockHeaders[blockHash]) {
|
||||
const { result: blockInfo, success } = await this.rpc.request({
|
||||
method: "eth_getBlockByHash",
|
||||
params: [blockHash, true],
|
||||
});
|
||||
|
||||
if (!success) {
|
||||
throw new Error(`RPC request failed`);
|
||||
}
|
||||
|
||||
const headerData = headerDataFromWeb3Response(blockInfo);
|
||||
const header = BlockHeader.fromHeaderData(headerData);
|
||||
|
||||
if (!header.hash().equals(toBuffer(blockHash))) {
|
||||
throw new Error(
|
||||
`blockhash doesn't match the blockInfo provided by the RPC`,
|
||||
);
|
||||
}
|
||||
this.blockHeaders[blockHash] = header;
|
||||
}
|
||||
return this.blockHeaders[blockHash];
|
||||
}
|
||||
|
||||
private async verifyProof(
|
||||
address: Address,
|
||||
storageKeys: Bytes32[],
|
||||
stateRoot: Buffer,
|
||||
proof: GetProof,
|
||||
): Promise<boolean> {
|
||||
const trie = new Trie();
|
||||
const key = keccak256(address.toBuffer());
|
||||
const expectedAccountRLP = await trie.verifyProof(
|
||||
stateRoot,
|
||||
toBuffer(key),
|
||||
proof.accountProof.map((a) => toBuffer(a)),
|
||||
);
|
||||
const account = Account.fromAccountData({
|
||||
nonce: BigInt(proof.nonce),
|
||||
balance: BigInt(proof.balance),
|
||||
storageRoot: proof.storageHash,
|
||||
codeHash: proof.codeHash,
|
||||
});
|
||||
const isAccountValid = account
|
||||
.serialize()
|
||||
.equals(expectedAccountRLP ? expectedAccountRLP : emptyAccountSerialize);
|
||||
if (!isAccountValid) {
|
||||
return false;
|
||||
}
|
||||
if (storageKeys.length !== proof?.storageProof.length) {
|
||||
console.error("missing storageProof");
|
||||
throw new Error("missing storageProof");
|
||||
}
|
||||
|
||||
for (let i = 0; i < storageKeys.length; i++) {
|
||||
const sp = proof.storageProof[i];
|
||||
const key = keccak256(setLengthLeft(toBuffer(storageKeys[i]), 32));
|
||||
const expectedStorageRLP = await trie.verifyProof(
|
||||
toBuffer(proof.storageHash),
|
||||
toBuffer(key),
|
||||
sp.proof.map((a) => toBuffer(a)),
|
||||
);
|
||||
const isStorageValid =
|
||||
(!expectedStorageRLP && sp.value === "0x0") ||
|
||||
(!!expectedStorageRLP &&
|
||||
expectedStorageRLP.equals(Buffer.from(rlp.encode(sp.value))));
|
||||
if (!isStorageValid) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
private verifyCodeHash(code: Bytes, codeHash: Bytes32): boolean {
|
||||
return (
|
||||
(code === "0x" && codeHash === "0x" + KECCAK256_NULL_S) ||
|
||||
keccak256(fromHexString(codeHash)) === fromHexString(codeHash)
|
||||
);
|
||||
}
|
||||
|
||||
private validateTx(tx: RPCTx) {
|
||||
if (tx.gasPrice !== undefined && tx.maxFeePerGas !== undefined) {
|
||||
throw new Error("Cannot send both gasPrice and maxFeePerGas params");
|
||||
}
|
||||
|
||||
if (tx.gasPrice !== undefined && tx.maxPriorityFeePerGas !== undefined) {
|
||||
throw new Error("Cannot send both gasPrice and maxPriorityFeePerGas");
|
||||
}
|
||||
|
||||
if (
|
||||
tx.maxFeePerGas !== undefined &&
|
||||
tx.maxPriorityFeePerGas !== undefined &&
|
||||
BigInt(tx.maxPriorityFeePerGas) > BigInt(tx.maxFeePerGas)
|
||||
) {
|
||||
throw new Error(
|
||||
`maxPriorityFeePerGas (${tx.maxPriorityFeePerGas.toString()}) is bigger than maxFeePerGas (${tx.maxFeePerGas.toString()})`,
|
||||
);
|
||||
}
|
||||
}
|
||||
private async getBlock(header: BlockHeader) {
|
||||
const { result: blockInfo, success } = await this.rpc.request({
|
||||
method: "eth_getBlockByNumber",
|
||||
params: [bigIntToHex(header.number), true],
|
||||
});
|
||||
|
||||
if (!success) {
|
||||
throw new Error(`RPC request failed`);
|
||||
}
|
||||
// TODO: add support for uncle headers; First fetch all the uncles
|
||||
// add it to the blockData, verify the uncles and use it
|
||||
const blockData = blockDataFromWeb3Response(blockInfo);
|
||||
const block = Block.fromBlockData(blockData, { common: this.common });
|
||||
|
||||
if (!block.header.hash().equals(header.hash())) {
|
||||
throw new Error(
|
||||
`BN(${header.number}): blockhash doest match the blockData provided by the RPC`,
|
||||
);
|
||||
}
|
||||
|
||||
if (!(await block.validateTransactionsTrie())) {
|
||||
throw new Error(
|
||||
`transactionTree doesn't match the transactions provided by the RPC`,
|
||||
);
|
||||
}
|
||||
|
||||
return block;
|
||||
}
|
||||
|
||||
private async getBlockHash(blockNumber: bigint) {
|
||||
if (blockNumber > this.latestBlockNumber)
|
||||
throw new Error("cannot return blockhash for a blocknumber in future");
|
||||
// TODO: fetch the blockHeader is batched request
|
||||
let lastVerifiedBlockNumber = this.latestBlockNumber;
|
||||
while (lastVerifiedBlockNumber > blockNumber) {
|
||||
const hash =
|
||||
this.blockHashes[bigIntToHex(BigInt(lastVerifiedBlockNumber))];
|
||||
const header = await this.getBlockHeaderByHash(hash);
|
||||
lastVerifiedBlockNumber--;
|
||||
const parentBlockHash = bufferToHex(header.parentHash);
|
||||
const parentBlockNumberHex = bigIntToHex(BigInt(lastVerifiedBlockNumber));
|
||||
if (
|
||||
parentBlockNumberHex in this.blockHashes &&
|
||||
this.blockHashes[parentBlockNumberHex] !== parentBlockHash
|
||||
) {
|
||||
console.log(
|
||||
"Overriding an existing verified blockhash. Possibly the chain had a reorg",
|
||||
);
|
||||
}
|
||||
this.blockHashes[parentBlockNumberHex] = parentBlockHash;
|
||||
}
|
||||
|
||||
return this.blockHashes[bigIntToHex(blockNumber)];
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,536 @@
|
|||
export const BEACON_SYNC_COMMITTEE_SIZE = 512;
|
||||
|
||||
export const mainnetConfig = {
|
||||
genesis_time: "1606824023",
|
||||
genesis_validator_root:
|
||||
"0x4b363db94e286120d76eb905340fdd4e54bfe9f06bf33ff6cf5ad27f511bfe95",
|
||||
slot: "6275237",
|
||||
committee_pk: [
|
||||
"0x9163821b21398fabd7fc110483c7100d4561f84d34eb8fe702762f5ad15b21c1de05b7552e400750ef87107054d2024c",
|
||||
"0xb5b3eed089c61c731ea4b8da89d79953d1dcd076f0388e5a9a83d06601ccf8daf0b853ca706f79fee60ed2cd9a385f24",
|
||||
"0xa84a73bbc11ea45136d6b315ae470c6494c418f9ec66648f3345f73f886e2b79171f1dc8bd7ca678064a71976ddd6866",
|
||||
"0x86de1398c34f7ef2a0d6ad10f8d09591c7d1fa1dc5336513bba619933c0bd48be956367261aad5d17553aa6052434b34",
|
||||
"0xb97cb89ec7055b04c7b9fd7eccc4a45715395c7316e42c9e241eadaaf7744b82b70b78acd6c64f95dd7138978356cd6c",
|
||||
"0x8ee3b246427b9a208b272db2613fdde603b40550e0f3205a6f005d5e38cb028bdba44803287a78bc9c577324ae9e5251",
|
||||
"0xa29f0427fc761318e6122277937b066950a6d749a5795f26e80b9fe1d2b41accb26c344b241d39e354638892b7f617f4",
|
||||
"0x91246b7f68034b436ba623979c9a665746f3de5de495115c042a2332f23578131ed0c61aa69c24a1b1c3ea0732dec40b",
|
||||
"0x8dbe5cf5acd2e860969a29165e04c5e7126070526dc160e2a77ebdccb1921be81bc1cc8d6d3bf704ff5efa9e47e4c355",
|
||||
"0xa372476af4b0896ffb47efe4725537f9d4a49e563058008c74d1397f5d0a66c934b2c29078bd8e89f4b055d817453f03",
|
||||
"0x8deaccd6915a70536cf44352e36139ce41dcac10bdf28616cb61b0b3f2dfb819267255709969497c986602d46f24e49e",
|
||||
"0x877c5114d0fd6b1e3fe5853d297c31768c25f5aaf4a56d21c0d1167497009c9360e323810fefa294768555509f1da41f",
|
||||
"0xa909c87e08c44584aae53f9380652edbf2373a0f7042e57d4340b4353d932495dadc8f340048180e578d9f93be77ca74",
|
||||
"0x84e194104f1fab523bb2e5a91367612b15bdcd4d736e7f4633df695e0c1aabedea01b3440915cf0790661eb2a47af9f4",
|
||||
"0xb1b58b4efd14539178aa289ca9a1a3b57efc8b12e3fb94ce6ee0014d7ad30c5c93f4e652cb5773f9f7d375f3e01dce3b",
|
||||
"0x92b2a5471d662a302c6b2b90f3eae2c055ac3eeaf29c90f1a41f43eb4564f0eb15a641077f83bf4b59b61dec0bd651d5",
|
||||
"0xb83ad1c495bc838742bebf2b5a31f4abf201ec93565146b95417a6794ad9c9cb0b944d7945d35735995b248d0d30f687",
|
||||
"0xb64c8327897cb8b16a02a180242ea8eb3a7e8053db0ee4bbdc83bbf00b87b2300f386e43caf4dfac7627844a441d1727",
|
||||
"0x836eba6f2f08438b95cc2f9e8f45ec42fc843892def3005df9291de9ff0bb8a26442270c6acbad1ea009b1026dfdd09b",
|
||||
"0x90fcf0aecdf3bae07054961cd0b13922a61215e2bc128d481cbaa76eb98dae426b5fc848d4c357b46aff6eabf766ba6b",
|
||||
"0x8208bfbf689752bed2c110b19f66d90e336be2f93331f0e32f355652a258366f79843a0f528f17c893e6a7feaadc5a11",
|
||||
"0xa1e099011217619de38f780b46ab4bb97c88968ba994e3e0b47c9c32fabc985f1f74fb40deafa6670d5fcb41add29c4d",
|
||||
"0x8184b64e342d9c02e47461b494782247bb178613d6ba814b7e96dab1170675fb45d0a2dddd3cf119361c022ffb58f55e",
|
||||
"0x939fddb7877e6064ad39888f06ee733bbfb8523adc72d381e5429592ecbfb16fd26cc7b009fcfa03c56390f2e5da7cda",
|
||||
"0x98421b84b58fbf62c1017c0b252848ae09d91c461693834e8b016a3dc476fa95aa4673fe858422a1ddacc0f7c85ef4c5",
|
||||
"0xa3f69eb68d11d8fdf2f3718b114a8f6deda97474e9986e879acd503c0cb4cb2de319a015ce28c10f161f4fa485354857",
|
||||
"0x8c14681476836e1b86f9d6c52c56b48269d1ef359f6006eac5063b7831cc73ab5d30eaba8a1fa99edbe9da03e9755969",
|
||||
"0xa4f1ecba907961d6a86aea821550b28f00551814188b0f5ddbbb486f3ac4d063554c48b4cd685b7104707f1b13dc1b2a",
|
||||
"0x96d7b0775111dbbb747242bbf9735e441aa9775a58f915418dff8507a0990532256bf0dd03b8bab011d99ff6e2c35cd9",
|
||||
"0x8c81dcaa669a0ce8fa46920385ed3abdcc8b8a3209a176c2d2aff1f3a1deee8f22e2b9477a33d58c1d91ec62eda1a931",
|
||||
"0xae05610abffb2d21709f64b04d4b59e12a0d8a738fb8e9161705b0bbbf40a69a7f432850c82c4bfff96db7875fb69ced",
|
||||
"0x8078a2aea4c2b52d93f2686caa0f128b18600c02b24725314b2d02e701ba0b60c8d1f168de8e4364b2cae31ecced4094",
|
||||
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|
||||
"0x909b5a6b09ffd5a64ac1cdce0143d09833a5c9bf5c5d190995dd37e5945c2c89d3aa5d1cd7cb5a46318752c8b6832152",
|
||||
"0x94c5d61e616b16eabffdc6fe35e9bae55d8da01580ccb15a18802502d1872484b386b50893801ee8c15c8ac7ed7ed176",
|
||||
"0xa49feb98f5e8872446e5f8e919d20b7bbb82f2fabe59458f416deb4fe2f415d579bd7ac45b286d522557c53e7df2b82b",
|
||||
"0x9071145e343177cfb81dc5e68648309b8b61636d30eb0ab6624bae58e8992d98951c299665a4139d12d4ea2f505ce265",
|
||||
"0xa68a488b0aaa3b060c0778a6e87e4f2dff7c806abf0a2125f96bbf3f0ad191d32fcf87d27cfa06eca4a9618eb48b2bee",
|
||||
"0x991febb335fc4eb22cd341abca8320fefa132e394d115cc8d6ca5b0d5de5487d458c5165a0b504bd85ea8c842a8dbf29",
|
||||
"0xa12bcbdb57fb851f0fa9ea0e1caf0929e8bef55ac71bb236c70124abae06581bff34a2b93d8a063e2bd42711ff535316",
|
||||
"0xa6a0ee28bf7027849b5605965c14ee75db82dc5d9374a8fe568fef6123719ca1698bed51f74fe872e6075c6ae0d3c8cb",
|
||||
"0x8559c5305305b10adee0b87536e18b3e70978b4f458531aacf3af132fffa68f7111c5155fdb1e5aedec27b746a99dff2",
|
||||
"0xa6a5d24dd7822c51f5b2fef526c735733a2eb5ab9ee6848f4e0777367bb2fd966e830056a54943f9ad9ee712dde5866a",
|
||||
"0x901b638eea2e8e7b1405ca19b80ea9be8d84fd117b1f8c22bd176a918fd5093d38eb720a423df577b8f219ed2fd994e9",
|
||||
"0xb5810330244b12529cb2596b4a3ff31305f8aab243bfba01da770b5754ee2d73ff7c9aa657a9e0cd0900410207c23644",
|
||||
"0x8451719fd8c98232f9b9cbb1ded46b1caff52b3d7509533016621fa49c461f129c2adbcd4941a500fd5209c9196acaf4",
|
||||
"0xa9749b942997de005582043d60ceeeaa6ac945c688ee3258e46ecd927690cd15412f827a6bd43b42c26f3d887415ff35",
|
||||
],
|
||||
};
|
||||
|
||||
export const BEACON_SYNC_SUPER_MAJORITY = Math.ceil(
|
||||
(BEACON_SYNC_COMMITTEE_SIZE * 2) / 3,
|
||||
);
|
||||
|
||||
// These are the rough numbers from benchmark experiments
|
||||
export const DEFAULT_BATCH_SIZE = 200;
|
||||
export const DEFAULT_TREE_DEGREE = 200;
|
||||
|
||||
export const POLLING_DELAY = 13 * 1000; //13s (slightly higher than the slot time)
|
||||
export const DEFAULT_BLOCK_PARAMETER = "latest";
|
||||
export const MAX_BLOCK_HISTORY = BigInt(256);
|
||||
export const MAX_BLOCK_FUTURE = BigInt(3);
|
||||
export const ZERO_ADDR = "0x0000000000000000000000000000000000000000";
|
||||
|
|
@ -0,0 +1,49 @@
|
|||
import { BeaconConfig } from "@lodestar/config";
|
||||
import { GenesisData, LightClientUpdate } from "#types.js";
|
||||
|
||||
import Provider from "#client/verifyingProvider.js";
|
||||
|
||||
export interface IProver {
|
||||
getSyncUpdate(
|
||||
period: number,
|
||||
currentPeriod: number,
|
||||
cacheCount: number,
|
||||
): Promise<LightClientUpdate>;
|
||||
}
|
||||
|
||||
export interface IStore {
|
||||
addUpdate(period: number, update: LightClientUpdate): Promise<void>;
|
||||
}
|
||||
|
||||
export interface IVerifyingProvider {
|
||||
update(blockNumber: number, blockHash: string): void;
|
||||
}
|
||||
|
||||
export type IVerifyingProviderConstructor<
|
||||
U extends IVerifyingProvider = IVerifyingProvider,
|
||||
> = new (requestHandler: Function, blockNumber: number, blockHash: string) => U;
|
||||
|
||||
export interface ClientConfig {
|
||||
genesis: GenesisData;
|
||||
chainConfig: BeaconConfig;
|
||||
// treeDegree in case of Superlight and batchSize in case of Light and Optimistic
|
||||
n?: number;
|
||||
}
|
||||
|
||||
export interface ExecutionInfo {
|
||||
blockHash: string;
|
||||
blockNumber: number;
|
||||
}
|
||||
|
||||
export interface ConsensusCommitteeHashesRequest {
|
||||
start: number;
|
||||
count: number;
|
||||
}
|
||||
|
||||
export interface ConsensusCommitteePeriodRequest {
|
||||
period: number | "latest";
|
||||
}
|
||||
|
||||
export interface ConsensusBlockRequest {
|
||||
block: number;
|
||||
}
|
||||
|
|
@ -0,0 +1,209 @@
|
|||
import BaseClient, { BaseClientOptions } from "#baseClient.js";
|
||||
import { ExecutionInfo, IStore } from "#interfaces.js";
|
||||
import axios, { AxiosInstance } from "axios";
|
||||
import axiosRetry from "axios-retry";
|
||||
import { Bytes32, capella, LightClientUpdate } from "#types.js";
|
||||
import {
|
||||
consensusClient,
|
||||
deserializePubkeys,
|
||||
optimisticUpdateFromJSON,
|
||||
optimisticUpdateVerify,
|
||||
} from "#util.js";
|
||||
import { toHexString } from "@chainsafe/ssz";
|
||||
import NodeCache from "node-cache";
|
||||
import { DEFAULT_BATCH_SIZE } from "#constants.js";
|
||||
import {
|
||||
computeSyncPeriodAtSlot,
|
||||
deserializeSyncCommittee,
|
||||
} from "@lodestar/light-client/utils";
|
||||
import { assertValidLightClientUpdate } from "@lodestar/light-client/validation";
|
||||
import bls from "@chainsafe/bls/switchable";
|
||||
|
||||
axiosRetry(axios, { retries: 3 });
|
||||
|
||||
interface Config extends BaseClientOptions {
|
||||
store: IStore;
|
||||
beaconUrl: string;
|
||||
}
|
||||
|
||||
export default class Client extends BaseClient {
|
||||
private beaconUrl: string;
|
||||
private blockCache = new NodeCache({ stdTTL: 60 * 60 * 12 });
|
||||
private blockHashCache = new NodeCache({ stdTTL: 60 * 60 * 12 });
|
||||
|
||||
constructor(config: Config) {
|
||||
super(config);
|
||||
|
||||
if (!config.beaconUrl) {
|
||||
throw new Error("beaconUrl required");
|
||||
}
|
||||
|
||||
this.beaconUrl = config.beaconUrl;
|
||||
this.http.defaults.baseURL = this.beaconUrl;
|
||||
}
|
||||
|
||||
private http: AxiosInstance = consensusClient;
|
||||
|
||||
async syncProver(
|
||||
startPeriod: number,
|
||||
currentPeriod: number,
|
||||
startCommittee: Uint8Array[],
|
||||
): Promise<{ syncCommittee: Uint8Array[]; period: number }> {
|
||||
for (let period = startPeriod; period < currentPeriod; period += 1) {
|
||||
try {
|
||||
const update = await this.options.prover.getSyncUpdate(
|
||||
period,
|
||||
currentPeriod,
|
||||
DEFAULT_BATCH_SIZE,
|
||||
);
|
||||
const validOrCommittee = await this.syncUpdateVerifyGetCommittee(
|
||||
startCommittee,
|
||||
period,
|
||||
update,
|
||||
);
|
||||
|
||||
if (!(validOrCommittee as boolean)) {
|
||||
console.log(`Found invalid update at period(${period})`);
|
||||
return {
|
||||
syncCommittee: startCommittee,
|
||||
period,
|
||||
};
|
||||
}
|
||||
|
||||
await this.options.store?.addUpdate(period, update);
|
||||
startCommittee = validOrCommittee as Uint8Array[];
|
||||
} catch (e) {
|
||||
console.error(`failed to fetch sync update for period(${period})`);
|
||||
return {
|
||||
syncCommittee: startCommittee,
|
||||
period,
|
||||
};
|
||||
}
|
||||
}
|
||||
return {
|
||||
syncCommittee: startCommittee,
|
||||
period: currentPeriod,
|
||||
};
|
||||
}
|
||||
|
||||
protected async getLatestExecution(): Promise<ExecutionInfo | null> {
|
||||
const resp = await axios.get(
|
||||
`/eth/v1/beacon/light_client/optimistic_update`,
|
||||
);
|
||||
|
||||
const updateJSON = resp.data;
|
||||
|
||||
if (!updateJSON) {
|
||||
throw Error(`fetching optimistic update failed`);
|
||||
}
|
||||
const update = optimisticUpdateFromJSON(updateJSON.data);
|
||||
const verify = await optimisticUpdateVerify(
|
||||
this.latestCommittee as Uint8Array[],
|
||||
update,
|
||||
);
|
||||
|
||||
if (!verify.correct) {
|
||||
// @ts-ignore
|
||||
console.error(`Invalid Optimistic Update: ${verify?.reason}`);
|
||||
return null;
|
||||
}
|
||||
return this.getExecutionFromBlockRoot(
|
||||
updateJSON.data.attested_header.beacon.slot,
|
||||
updateJSON.data.attested_header.beacon.body_root,
|
||||
);
|
||||
}
|
||||
|
||||
protected async syncFromGenesis(): Promise<Uint8Array[]> {
|
||||
return this.syncFromLastUpdate(this.genesisPeriod);
|
||||
}
|
||||
|
||||
protected async syncFromLastUpdate(
|
||||
startPeriod = this.latestPeriod,
|
||||
): Promise<Uint8Array[]> {
|
||||
const currentPeriod = this.getCurrentPeriod();
|
||||
let startCommittee = this.genesisCommittee;
|
||||
console.debug(
|
||||
`Sync started from period(${startPeriod}) to period(${currentPeriod})`,
|
||||
);
|
||||
|
||||
const { syncCommittee, period } = await this.syncProver(
|
||||
startPeriod,
|
||||
currentPeriod,
|
||||
startCommittee,
|
||||
);
|
||||
if (period === currentPeriod) {
|
||||
console.debug(
|
||||
`Sync completed from period(${startPeriod}) to period(${currentPeriod})`,
|
||||
);
|
||||
|
||||
return syncCommittee;
|
||||
}
|
||||
|
||||
throw new Error("no honest prover found");
|
||||
}
|
||||
|
||||
protected async syncUpdateVerifyGetCommittee(
|
||||
prevCommittee: Uint8Array[],
|
||||
period: number,
|
||||
update: LightClientUpdate,
|
||||
): Promise<false | Uint8Array[]> {
|
||||
const updatePeriod = computeSyncPeriodAtSlot(
|
||||
update.attestedHeader.beacon.slot,
|
||||
);
|
||||
if (period !== updatePeriod) {
|
||||
console.error(
|
||||
`Expected update with period ${period}, but received ${updatePeriod}`,
|
||||
);
|
||||
return false;
|
||||
}
|
||||
|
||||
const prevCommitteeFast = deserializeSyncCommittee({
|
||||
pubkeys: prevCommittee,
|
||||
aggregatePubkey: bls.PublicKey.aggregate(
|
||||
deserializePubkeys(prevCommittee),
|
||||
).toBytes(),
|
||||
});
|
||||
|
||||
try {
|
||||
// check if the update has valid signatures
|
||||
await assertValidLightClientUpdate(
|
||||
this.config.chainConfig,
|
||||
prevCommitteeFast,
|
||||
update,
|
||||
);
|
||||
return update.nextSyncCommittee.pubkeys;
|
||||
} catch (e) {
|
||||
console.error(e);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
private async getExecutionFromBlockRoot(
|
||||
slot: bigint,
|
||||
expectedBlockRoot: Bytes32,
|
||||
): Promise<ExecutionInfo> {
|
||||
const res = await axios.get(`/eth/v2/beacon/blocks/${slot}`);
|
||||
|
||||
if (!res.data) {
|
||||
throw Error(`fetching block failed`);
|
||||
}
|
||||
|
||||
const block = capella.ssz.BeaconBlock.fromJson(res.data.message);
|
||||
const blockRoot = toHexString(
|
||||
capella.ssz.BeaconBlockBody.hashTreeRoot(block.body),
|
||||
);
|
||||
if (blockRoot !== expectedBlockRoot) {
|
||||
throw Error(
|
||||
`block provided by the beacon chain api doesn't match the expected block root`,
|
||||
);
|
||||
}
|
||||
|
||||
this.blockCache.set<any>(Number(slot), block);
|
||||
this.blockHashCache.set<Bytes32>(Number(slot), expectedBlockRoot);
|
||||
|
||||
return {
|
||||
blockHash: toHexString(block.body.executionPayload.blockHash),
|
||||
blockNumber: block.body.executionPayload.blockNumber,
|
||||
};
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,13 @@
|
|||
import Client from "./client.js";
|
||||
import Prover from "./prover.js";
|
||||
import Store from "./store.js";
|
||||
|
||||
function createDefaultClient(beaconUrl: string): Client {
|
||||
return new Client({
|
||||
store: new Store(),
|
||||
prover: new Prover(),
|
||||
beaconUrl,
|
||||
});
|
||||
}
|
||||
|
||||
export { Client, Prover, Store, createDefaultClient };
|
||||
|
|
@ -0,0 +1,37 @@
|
|||
import { IProver } from "#interfaces.js";
|
||||
import { LightClientUpdate } from "#types.js";
|
||||
import { consensusClient } from "#util.js";
|
||||
import { AxiosInstance } from "axios";
|
||||
import * as capella from "@lodestar/types/capella";
|
||||
|
||||
export default class Prover implements IProver {
|
||||
cachedSyncUpdate: Map<number, LightClientUpdate> = new Map();
|
||||
private http: AxiosInstance = consensusClient;
|
||||
|
||||
async _getSyncUpdates(
|
||||
startPeriod: number,
|
||||
maxCount: number,
|
||||
): Promise<LightClientUpdate[]> {
|
||||
const res = await this.http(
|
||||
`/eth/v1/beacon/light_client/updates?start_period=${startPeriod}&count=${maxCount}`,
|
||||
);
|
||||
return res.data.map((u: any) =>
|
||||
capella.ssz.LightClientUpdate.fromJson(u.data),
|
||||
);
|
||||
}
|
||||
|
||||
async getSyncUpdate(
|
||||
period: number,
|
||||
currentPeriod: number,
|
||||
cacheCount: number,
|
||||
): Promise<LightClientUpdate> {
|
||||
const _cacheCount = Math.min(currentPeriod - period + 1, cacheCount);
|
||||
if (!this.cachedSyncUpdate.has(period)) {
|
||||
const vals = await this._getSyncUpdates(period, _cacheCount);
|
||||
for (let i = 0; i < _cacheCount; i++) {
|
||||
this.cachedSyncUpdate.set(period + i, vals[i]);
|
||||
}
|
||||
}
|
||||
return this.cachedSyncUpdate.get(period)!;
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,57 @@
|
|||
import { digest } from "@chainsafe/as-sha256";
|
||||
import { CommitteeSSZ, HashesSSZ } from "#ssz.js";
|
||||
import { IStore } from "#interfaces.js";
|
||||
import { concatBytes } from "@noble/hashes/utils";
|
||||
import { LightClientUpdate } from "#types.js";
|
||||
import * as capella from "@lodestar/types/capella";
|
||||
|
||||
export default class Store implements IStore {
|
||||
store: {
|
||||
[period: number]: {
|
||||
update: Uint8Array;
|
||||
nextCommittee: Uint8Array;
|
||||
nextCommitteeHash: Uint8Array;
|
||||
};
|
||||
} = {};
|
||||
|
||||
async addUpdate(period: number, update: LightClientUpdate) {
|
||||
try {
|
||||
this.store[period] = {
|
||||
update: capella.ssz.LightClientUpdate.serialize(update),
|
||||
nextCommittee: CommitteeSSZ.serialize(update.nextSyncCommittee.pubkeys),
|
||||
nextCommitteeHash: digest(
|
||||
concatBytes(...update.nextSyncCommittee.pubkeys),
|
||||
),
|
||||
};
|
||||
} catch (e) {
|
||||
console.log(e);
|
||||
}
|
||||
}
|
||||
|
||||
getUpdate(period: number): Uint8Array {
|
||||
if (period in this.store) return this.store[period].update;
|
||||
throw new Error(`update unavailable for period ${period}`);
|
||||
}
|
||||
|
||||
getCommittee(period: number): Uint8Array {
|
||||
if (period < 1)
|
||||
throw new Error("committee not unavailable for period less than 1");
|
||||
const predPeriod = period - 1;
|
||||
if (predPeriod in this.store) return this.store[predPeriod].nextCommittee;
|
||||
throw new Error(`committee unavailable for period ${predPeriod}`);
|
||||
}
|
||||
|
||||
getCommitteeHashes(period: number, count: number): Uint8Array {
|
||||
if (period < 1)
|
||||
throw new Error("committee not unavailable for period less than 1");
|
||||
const predPeriod = period - 1;
|
||||
|
||||
const hashes = new Array(count).fill(0).map((_, i) => {
|
||||
const p = predPeriod + i;
|
||||
if (p in this.store) return this.store[p].nextCommitteeHash;
|
||||
throw new Error(`committee unavailable for period ${p}`);
|
||||
});
|
||||
|
||||
return HashesSSZ.serialize(hashes);
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,23 @@
|
|||
import {
|
||||
ByteVectorType,
|
||||
ListCompositeType,
|
||||
VectorCompositeType,
|
||||
} from "@chainsafe/ssz";
|
||||
import * as capella from "@lodestar/types/capella";
|
||||
import { BEACON_SYNC_COMMITTEE_SIZE } from "./constants.js";
|
||||
|
||||
const MAX_BATCHSIZE = 10000;
|
||||
|
||||
//@ts-ignore
|
||||
export const LightClientUpdatesSSZ = new ListCompositeType(
|
||||
capella.ssz.LightClientUpdate as any,
|
||||
MAX_BATCHSIZE,
|
||||
);
|
||||
|
||||
export const CommitteeSSZ = new VectorCompositeType(
|
||||
new ByteVectorType(48),
|
||||
BEACON_SYNC_COMMITTEE_SIZE,
|
||||
);
|
||||
|
||||
const HashSSZ = new ByteVectorType(32);
|
||||
export const HashesSSZ = new ListCompositeType(HashSSZ, MAX_BATCHSIZE);
|
||||
|
|
@ -0,0 +1,20 @@
|
|||
import * as capella from "@lodestar/types/capella";
|
||||
import * as phase0 from "@lodestar/types/phase0";
|
||||
|
||||
export type PubKeyString = string;
|
||||
export type Slot = number;
|
||||
export type Bytes32 = string;
|
||||
|
||||
export type LightClientUpdate = capella.LightClientUpdate;
|
||||
export type OptimisticUpdate = capella.LightClientOptimisticUpdate;
|
||||
|
||||
export type GenesisData = {
|
||||
committee: PubKeyString[];
|
||||
slot: Slot;
|
||||
time: number;
|
||||
};
|
||||
export type VerifyWithReason =
|
||||
| { correct: true }
|
||||
| { correct: false; reason: string };
|
||||
|
||||
export { capella, phase0 };
|
||||
|
|
@ -0,0 +1,79 @@
|
|||
import { createBeaconConfig } from "@lodestar/config";
|
||||
import { BEACON_SYNC_SUPER_MAJORITY, mainnetConfig } from "./constants.js";
|
||||
import { networksChainConfig } from "@lodestar/config/networks";
|
||||
import { fromHexString } from "@chainsafe/ssz";
|
||||
import { capella, OptimisticUpdate, phase0, VerifyWithReason } from "#types.js";
|
||||
import { assertValidSignedHeader } from "@lodestar/light-client/validation";
|
||||
import bls from "@chainsafe/bls/switchable";
|
||||
import axiosRetry from "axios-retry";
|
||||
import axios from "axios";
|
||||
import { digest } from "@chainsafe/as-sha256";
|
||||
import { concatBytes } from "@noble/hashes/utils";
|
||||
|
||||
export function getDefaultClientConfig() {
|
||||
const chainConfig = createBeaconConfig(
|
||||
networksChainConfig.mainnet,
|
||||
fromHexString(mainnetConfig.genesis_validator_root),
|
||||
);
|
||||
return {
|
||||
genesis: {
|
||||
committee: mainnetConfig.committee_pk,
|
||||
slot: parseInt(mainnetConfig.slot),
|
||||
time: parseInt(mainnetConfig.genesis_time),
|
||||
},
|
||||
chainConfig,
|
||||
n: 1,
|
||||
};
|
||||
}
|
||||
|
||||
export function optimisticUpdateFromJSON(update: any): OptimisticUpdate {
|
||||
return capella.ssz.LightClientOptimisticUpdate.fromJson(update);
|
||||
}
|
||||
export async function optimisticUpdateVerify(
|
||||
committee: Uint8Array[],
|
||||
update: OptimisticUpdate,
|
||||
): Promise<VerifyWithReason> {
|
||||
try {
|
||||
const { attestedHeader: header, syncAggregate } = update;
|
||||
const headerBlockRoot = phase0.ssz.BeaconBlockHeader.hashTreeRoot(
|
||||
header.beacon,
|
||||
);
|
||||
const committeeFast = this.deserializeSyncCommittee(committee);
|
||||
try {
|
||||
assertValidSignedHeader(
|
||||
this.config.chainConfig,
|
||||
committeeFast,
|
||||
syncAggregate,
|
||||
headerBlockRoot,
|
||||
header.beacon.slot,
|
||||
);
|
||||
} catch (e) {
|
||||
return { correct: false, reason: "invalid signatures" };
|
||||
}
|
||||
|
||||
const participation =
|
||||
syncAggregate.syncCommitteeBits.getTrueBitIndexes().length;
|
||||
if (participation < BEACON_SYNC_SUPER_MAJORITY) {
|
||||
return { correct: false, reason: "insufficient signatures" };
|
||||
}
|
||||
|
||||
if (!this.isValidLightClientHeader(this.config.chainConfig, header)) {
|
||||
return { correct: false, reason: "invalid header" };
|
||||
}
|
||||
|
||||
return { correct: true };
|
||||
} catch (e) {
|
||||
console.error(e);
|
||||
return { correct: false, reason: (e as Error).message };
|
||||
}
|
||||
}
|
||||
export function deserializePubkeys(pubkeys) {
|
||||
return pubkeys.map((pk) => bls.PublicKey.fromBytes(pk));
|
||||
}
|
||||
|
||||
export function getCommitteeHash(committee: Uint8Array[]): Uint8Array {
|
||||
return digest(concatBytes(...committee));
|
||||
}
|
||||
|
||||
export const consensusClient = axios.create();
|
||||
axiosRetry(consensusClient, { retries: 3 });
|
||||
|
|
@ -0,0 +1,60 @@
|
|||
{
|
||||
"compilerOptions": {
|
||||
"outDir": "lib",
|
||||
"module": "ESNext",
|
||||
"target": "ESNext",
|
||||
"declaration": true,
|
||||
"inlineSourceMap": true,
|
||||
"noEmit": true,
|
||||
"noImplicitUseStrict": false,
|
||||
"preserveConstEnums": true,
|
||||
"removeComments": true,
|
||||
"allowSyntheticDefaultImports": true,
|
||||
"esModuleInterop": true,
|
||||
"experimentalDecorators": true,
|
||||
"emitDecoratorMetadata": true,
|
||||
"isolatedModules": false,
|
||||
"alwaysStrict": true,
|
||||
"noImplicitAny": false,
|
||||
"noImplicitThis": false,
|
||||
"strictBindCallApply": true,
|
||||
"strictFunctionTypes": true,
|
||||
"strictNullChecks": true,
|
||||
"strictPropertyInitialization": true,
|
||||
"allowUnreachableCode": false,
|
||||
"allowUnusedLabels": false,
|
||||
"forceConsistentCasingInFileNames": true,
|
||||
"noImplicitReturns": true,
|
||||
"noUnusedLocals": false,
|
||||
"noUnusedParameters": false,
|
||||
"noFallthroughCasesInSwitch": false,
|
||||
"skipLibCheck": true,
|
||||
"moduleResolution": "node",
|
||||
"resolveJsonModule": true,
|
||||
"baseUrl": ".",
|
||||
"paths": {
|
||||
"#*": [
|
||||
"src/*"
|
||||
],
|
||||
"*": [
|
||||
"*",
|
||||
"types/*"
|
||||
]
|
||||
},
|
||||
"lib": [
|
||||
"ES2020",
|
||||
"ES2021",
|
||||
"dom"
|
||||
]
|
||||
},
|
||||
"include": [
|
||||
"**/*.json",
|
||||
"**/*.ts",
|
||||
"**/*.cts",
|
||||
"**/*.mts"
|
||||
],
|
||||
"exclude": [
|
||||
"**/node_modules",
|
||||
"lib"
|
||||
]
|
||||
}
|
||||
Loading…
Reference in New Issue