Merge pull request #42 from code-423n4/feature/simProposal

Add script for simulating an existing proposal

Author: HickupHH3

scripts/deploy/config.ts

@@ -1,5 +1,5 @@
 import {BigNumber as BN, constants} from 'ethers';
-import {ONE_18, ONE_DAY, ONE_YEAR} from '../../test/shared/Constants';
+import {ONE_18, ONE_DAY, ONE_YEAR} from '../../shared/Constants';
 
 type Config = {
   FREE_SUPPLY: BN;

scripts/proposals/index.ts

@@ -8,3 +8,10 @@ task('propose', 'propose transfer')
     const {transferProposal} = await import('./transfer');
     await transferProposal(json, hre);
   });
+
+task('simulateExistingProposal', 'simulates an existing proposal (by cloning it)')
+  .addParam('id', 'Proposal ID')
+  .setAction(async ({id}, hre) => {
+    const {simulateExistingProposal} = await import('./simulateExistingProposal');
+    await simulateExistingProposal(id, hre);
+  });

scripts/proposals/simulateExistingProposal.ts

@@ -0,0 +1,28 @@
+import {HardhatRuntimeEnvironment} from 'hardhat/types';
+import {getPolygonContracts, getForkParams} from '../../shared/Forking';
+import {createAndExecuteProposal} from '../../shared/Governance';
+
+export async function simulateExistingProposal(proposalId: string, hre: HardhatRuntimeEnvironment) {
+  const [user] = await hre.ethers.getSigners();
+  const deployment = getPolygonContracts(user);
+
+  // attempt mainnet forking
+  await hre.network.provider.request({
+    method: 'hardhat_reset',
+    params: [getForkParams()],
+  });
+
+  const proposalActions = await deployment.governor.getActions(proposalId);
+  let valuesArray = proposalActions[1].map((value) => value.toString());
+  console.log(`proposal targets: ${proposalActions.targets}`);
+  console.log(`proposal values: ${valuesArray}`);
+  console.log(`proposal calldatas: ${proposalActions.calldatas}`);
+  console.log(`cloning proposal...`);
+  await createAndExecuteProposal({
+    user,
+    targets: proposalActions.targets,
+    values: valuesArray,
+    calldatas: proposalActions.calldatas,
+    ...deployment,
+  });
+}

test/shared/AccountManipulation.ts renamed to shared/AccountManipulation.ts

@@ -10,7 +10,7 @@ import {
   TimelockController__factory,
   TokenLock,
   TokenLock__factory,
-} from '../../typechain';
+} from '../typechain';
 
 export type DeployedContracts = {
   governor: ArenaGovernor;
@@ -49,3 +49,17 @@ export const getPolygonContracts = (signer: Signer): DeployedContracts => {
     tokenLock: TokenLock__factory.connect(tokenLockAddress, signer),
   };
 };
+
+export function getForkParams() {
+  if (process.env.POLYGON_URL == undefined) {
+    console.log(`Missing POLYGON_URL in .env`);
+    process.exit(1);
+  }
+  let forkParams: any = {
+    forking: {
+      jsonRpcUrl: process.env.POLYGON_URL
+    }
+  };
+  if (process.env.FORK_BLOCK) forkParams['forking']['blockNumber'] = Number(process.env.FORK_BLOCK);
+  return forkParams;
+}

test/shared/Constants.ts renamed to shared/Constants.ts

@@ -1,9 +1,10 @@
 import {Signer} from 'ethers';
 import {ethers} from 'hardhat';
-import {impersonateAccountWithFunds, stopImpersonateAccount} from '../shared/AccountManipulation';
-import {increaseNextBlockTime, setNextBlockNumber} from '../shared/TimeManipulation';
+import {impersonateAccountWithFunds, stopImpersonateAccount} from './AccountManipulation';
+import {increaseNextBlockTime, setNextBlockNumber} from './TimeManipulation';
 import {POLYGON_AVERAGE_BLOCK_TIME} from './Constants';
 import {DeployedContracts} from './Forking';
+import {getABIFromPolygonscan} from './Polygonscan';
 
 export const createAndExecuteProposal = async ({
   governor,
@@ -23,15 +24,18 @@ export const createAndExecuteProposal = async ({
   const timeLockSigner = await impersonateAccountWithFunds(timeLock.address);
   let originalVotingDelay = await governor.votingDelay();
   let originalVotingPeriod = await governor.votingPeriod();
+  console.log('setting voting delay and duration to 2 blocks...');
   await governor.connect(timeLockSigner).setVotingDelay(`2`);
   await governor.connect(timeLockSigner).setVotingPeriod(`2`);
 
   // 1. borrow some treasury tokens to user as we need signer with min. proposalThreshold tokens to propose
   const quorumAmount = await governor.quorumVotes();
   // careful, this sends ETH to timelock which might break real-world simulation for proposals involving Timelock ETH
+  console.log('transferring tokens to user for proposal creation...');
   await arenaToken.connect(timeLockSigner).transfer(await user.getAddress(), quorumAmount);
   await arenaToken.connect(user).delegate(await user.getAddress());
   const descriptionHash = ethers.utils.keccak256([]); // keccak(``)
+  console.log('creating proposal...');
   let tx = await governor.connect(user)['propose(address[],uint256[],bytes[],string)'](targets, values, calldatas, ``);
   let {events} = await tx.wait();
   // get first event (ProposalCreated), then get first arg of that event (proposalId)
@@ -42,6 +46,7 @@ export const createAndExecuteProposal = async ({
   // simulate elapsed time close to original voting delay
   await increaseNextBlockTime(Math.floor(POLYGON_AVERAGE_BLOCK_TIME * originalVotingDelay.toNumber()));
   await setNextBlockNumber(voteStartBlock.toNumber() + 1); // is a blocknumber which fits in Number
+  console.log('casting vote...');
   tx = await governor.connect(user)['castVote'](proposalId, `1`);
 
   // 3. return borrowed tokens
@@ -52,22 +57,48 @@ export const createAndExecuteProposal = async ({
   // simulate elapsed time close to original voting delay
   await increaseNextBlockTime(Math.floor(POLYGON_AVERAGE_BLOCK_TIME * originalVotingPeriod.toNumber()));
   await setNextBlockNumber(voteEndBlock.toNumber() + 1); // is a blocknumber which fits in Number
-  tx = await governor
-    .connect(user)
-    ['queue(address[],uint256[],bytes[],bytes32)'](targets, values, calldatas, descriptionHash);
+  console.log('queueing proposal...');
+  tx = await governor.connect(user)['queue(uint256)'](proposalId);
   await tx.wait();
 
   // can revert Governor changes now
+  console.log('resetting voting delay and period...');
   await governor.connect(timeLockSigner).setVotingDelay(originalVotingDelay);
   await governor.connect(timeLockSigner).setVotingPeriod(originalVotingPeriod);
   await stopImpersonateAccount(timeLock.address);
 
   // 5. advance time past timelock delay and then execute
   const timeLockMinDelaySeconds = await timeLock.getMinDelay();
   await increaseNextBlockTime(timeLockMinDelaySeconds.toNumber());
-  await governor
-    .connect(user)
-    ['execute(address[],uint256[],bytes[],bytes32)'](targets, values, calldatas, descriptionHash);
+  console.log('executing proposal...');
+  tx = await governor.connect(user)['execute(uint256)'](proposalId);
+
+  let result = await tx.wait(1);
+
+  for (let i = 0; i < targets.length; i++) {
+    let abi = await getABIFromPolygonscan(targets[i]);
+    let iface = new ethers.utils.Interface(abi);
+    let events = result.logs.map((log) => {
+      try {
+        return iface.parseLog(log);
+      } catch (e) {
+        // no matching event
+      }
+    });
+    console.log(`### TARGET ${targets[i]} EVENTS ###`);
+    console.log(events);
+    console.log(`###################################`);
+  }
+
+  let timelockEvents = result.logs.map((log) => {
+    try {
+      return timeLock.interface.parseLog(log);
+    } catch (e) {
+      // no matching event
+    }
+  });
+  console.log(`### TIMELOCK EVENTS ###`);
+  console.log(timelockEvents);
 
   return proposalId;
 };

test/shared/Forking.ts renamed to shared/Forking.ts

@@ -0,0 +1,20 @@
+import fetch from 'node-fetch';
+
+export async function getABIFromPolygonscan(address: string) {
+  if (process.env.POLYGONSCAN_API_KEY == undefined) {
+    console.log('Require polygonscan key, exiting...');
+    process.exit(1);
+  }
+
+  let abiRequest = await fetch(
+    `https://api.polygonscan.com/api?module=contract&action=getabi` +
+      `&address=${address}` +
+      `&apikey=${process.env.POLYGONSCAN_API_KEY}`
+  );
+  let abi = await abiRequest.json();
+  if (abi.status == '0') {
+    console.log(abi.result);
+    process.exit(1);
+  }
+  return abi.result;
+}

test/shared/Governance.ts renamed to shared/Governance.ts

@@ -4,9 +4,9 @@ import * as fs from 'fs';
 import {ethers, waffle} from 'hardhat';
 import * as path from 'path';
 import {ArenaToken, RevokableTokenLock} from '../typechain';
-import {impersonateAccountWithFunds, stopImpersonateAccount} from './shared/AccountManipulation';
-import {ONE_18, ONE_DAY, ONE_YEAR} from './shared/Constants';
-import {resetNetwork, setNextBlockTimeStamp} from './shared/TimeManipulation';
+import {impersonateAccountWithFunds, stopImpersonateAccount} from '../shared/AccountManipulation';
+import {ONE_18, ONE_DAY, ONE_YEAR} from '../shared/Constants';
+import {resetNetwork, setNextBlockTimeStamp} from '../shared/TimeManipulation';
 import {MerkleDistributorInfo} from '../src/parse-balance-map';
 
 const {solidity, loadFixture} = waffle;