Add script to calculate relayer losses during the hack

data/relayerLosses.txt

@@ -0,0 +1,4 @@
+0x864DF9CD806D58341f13602103Bf853066ff962a = 625894225496155734516 // ~ 625 TORN
+0x5555555731006f71f121144534Ca7C8799F66AA3 = 43970301082908267318 // ~ 43 TORN
+0x2Ee39Ff05643bC7cc9ed31B71e142429044A425C = 189640345451160934437 // ~ 189 TORN
+0x03392600086874456E08D2bAc104380BCdEBCfC0 = 129757783603193410350 // ~ 129 TORN

package.json

@@ -1,22 +1,26 @@
 {
-    "name": "forge-proposal-template",
+    "name": "proposal-33-compensate-relayer-losses",
     "version": "1.0.0",
-    "repository": "https://git.tornado.ws/Theo/forge-proposal-template",
+    "repository": "https://git.tornado.ws/Theo/proposal-33-compensate-relayer-losses",
     "author": "Theo",
     "license": "MIT",
-    "type": "module",
     "private": false,
     "scripts": {
         "init": "cd lib && git clone --recurse-submodules https://github.com/foundry-rs/forge-std",
         "test:windows": ".\\.env.bat && forge test",
         "test:linux": ". .env && forge test",
         "test:gas:windows": ".\\.env.bat && forge test --gas-report",
-        "test:gas:linux": ". .env && forge test --gas-report"
+        "test:gas:linux": ". .env && forge test --gas-report",
+        "calculate": "npx ts-node scripts/calculateLosses.ts"
     },
     "dependencies": {
         "@ensdomains/ens-contracts": "^0.0.21",
         "@openzeppelin/contracts": "^4.9.0",
-        "@openzeppelin/upgrades-core": "^1.26.2"
+        "@openzeppelin/upgrades-core": "^1.26.2",
+        "axios": "^1.5.1",
+        "dotenv": "^16.3.1",
+        "web3": "^4.2.0",
+        "web3-utils": "^4.0.7"
     },
     "optionalDependencies": {
         "@gnosis.pm/ido-contracts": "^0.5.0",

scripts/calculateLosses.ts

@@ -0,0 +1,67 @@
+import * as dotenv from "dotenv";
+import { Web3 } from "web3";
+import fs from "fs";
+import path from "path";
+import axios from "axios";
+import { RelayerLosses, TxReceipt } from "./types";
+dotenv.config();
+
+const web3 = new Web3(process.env.MAINNET_RPC_URL);
+const routerAddress = "0xd90e2f925DA726b50C4Ed8D0Fb90Ad053324F31b";
+
+async function fetchFailedWithdrawals() {
+    const attackStartBlock = 18363087;
+    const attackEndBlock = 18366622;
+
+    let failedWithdrawalTransactions = [];
+    for (let blockNumber = attackStartBlock; blockNumber <= attackEndBlock; blockNumber++) {
+        let block = null;
+        while (block == null)
+            try {
+                block = await web3.eth.getBlock(blockNumber);
+            } catch (e) {}
+        const results = await Promise.allSettled(block.transactions.map((tx) => web3.eth.getTransactionReceipt(tx as string)));
+        const transactions = results.filter((r) => r.status === "fulfilled").map((r) => (r as PromiseFulfilledResult<TxReceipt>).value);
+        failedWithdrawalTransactions.push(...transactions.filter((tx) => tx.to === routerAddress.toLowerCase() && tx.status == 0));
+    }
+
+    return failedWithdrawalTransactions;
+}
+
+async function calculateLosses(failedTransactions: Array<TxReceipt>): Promise<RelayerLosses> {
+    return failedTransactions.reduce((acc, tx) => {
+        const gasExpenses = BigInt(tx.gasUsed) * BigInt(tx.effectiveGasPrice!);
+        acc[tx.from] = acc[tx.from] ? acc[tx.from] + gasExpenses : gasExpenses;
+        return acc;
+    }, {} as RelayerLosses);
+}
+
+async function getEthRateInTorn(): Promise<bigint> {
+    const api = "https://api.binance.com/api/v3/ticker/price?symbol=";
+    const fetchPrice = async (symbol: string) => Number((await axios.get(api + symbol)).data.price);
+    const tornInUsd = await fetchPrice("TORNBUSD");
+    const ethInUsd = await fetchPrice("ETHUSDT");
+
+    return BigInt(Math.floor(ethInUsd / tornInUsd));
+}
+
+function writeData(relayerLossesInTorn: RelayerLosses) {
+    const data = Object.entries(relayerLossesInTorn)
+        .map(([relayer, amount]) => `${web3.utils.toChecksumAddress(relayer)} = ${amount.toString()} // ~ ${amount / 10n ** 18n} TORN`)
+        .join("\n");
+    fs.writeFileSync(path.join(".", "data", "relayerLosses.txt"), data);
+}
+
+async function main() {
+    const failedWithdrawals = await fetchFailedWithdrawals();
+    const relayerLosses = await calculateLosses(failedWithdrawals);
+    console.log(relayerLosses);
+    const ethRateInTorn = await getEthRateInTorn();
+    const relayerLossesInTorn = Object.fromEntries(
+        Object.entries(relayerLosses).map(([relayer, amounthInEth]) => [relayer, amounthInEth * ethRateInTorn])
+    );
+    writeData(relayerLossesInTorn);
+    console.log("All data about relayer losses written successfully.");
+}
+
+main();

scripts/types.ts

@@ -0,0 +1,4 @@
+import { Web3Eth } from "web3";
+
+export type TxReceipt = Awaited<ReturnType<Web3Eth["getTransactionReceipt"]>>;
+export type RelayerLosses = Record<string, bigint>;

scripts/utils.ts

@@ -1,34 +1,31 @@
-type NodeVarObject = { [key: string]: string | number };
+type NodeVarObject = { [key: string]: string };
+type NodeVarArray = [string, string];
 
 const solidityCodePadding = " ".repeat(8);
 const pad = (decl: string, padding: string = solidityCodePadding) => padding + decl + "\n";
 
 class DeclCalculator {
-    declType!: string | number;
-    padding!: string;
-    transformator!: Function;
-
     public constructor(
-        declType: string | number,
-        padding: string = solidityCodePadding,
-        transformator: Function = (
+        private declType: string,
+        private padding: string = solidityCodePadding,
+        private transformator: Function = (
+            () => (x: any) =>
+                x
+        )(),
+        private variableNameChanger: Function = (
             () => (x: any) =>
                 x
         )()
-    ) {
-        this.declType = declType;
-        this.padding = padding || solidityCodePadding;
-        this.transformator = transformator;
-    }
+    ) {}
 
     private displayVariableName(varObj: NodeVarObject) {
         return Object.keys(varObj)[0];
     }
 
-    public calculateDecl = (varObj: NodeVarObject, type: string = "bytes32") => {
-        const solidityVariableName = this.displayVariableName(varObj);
-        const solidityVariableValue = this.transformator(Object.values(varObj)[0]);
-        const solidityDeclaration = `${this.declType || type} ${solidityVariableName} = ${solidityVariableValue.toString()};`;
+    public calculateDecl = (varInfo: NodeVarObject | NodeVarArray, type: string = "bytes32") => {
+        const solidityVariableName = this.variableNameChanger(Array.isArray(varInfo) ? varInfo[0] : this.displayVariableName(varInfo));
+        const solidityVariableValue = this.transformator(Array.isArray(varInfo) ? varInfo[1] : Object.values(varInfo)[0]);
+        const solidityDeclaration = `${this.declType || type} ${solidityVariableName} = ${solidityVariableValue};`;
 
         return pad(solidityDeclaration, this.padding);
     };

tsconfig.json

@@ -27,7 +27,7 @@
         /* Modules */
         "module": "NodeNext" /* Specify what module code is generated. */,
         // "rootDir": "./",                                  /* Specify the root folder within your source files. */
-        // "moduleResolution": "node10",                     /* Specify how TypeScript looks up a file from a given module specifier. */
+        "moduleResolution": "NodeNext" /* Specify how TypeScript looks up a file from a given module specifier. */,
         // "baseUrl": "./",                                  /* Specify the base directory to resolve non-relative module names. */
         // "paths": {},                                      /* Specify a set of entries that re-map imports to additional lookup locations. */
         // "rootDirs": [],                                   /* Allow multiple folders to be treated as one when resolving modules. */