Porting in OZ clone (compound-finance#725)

https://github.com/OpenZeppelin/compound-cross-chain-pause-demo/tree/main/defender-multisig-setup

README.md

@@ -250,6 +250,14 @@ This can also be used together with `--overwrite`, to produce the verification a
 Make sure that the deploying address has a sufficient amount of the chain's
 native asset (i.e. 2 ETH for Kovan, 2 AVAX for Fuji)
 
+### Clone Multisig
+
+The `clone-multisig` script can be used to clone the multisig and its configuration from an existing deployment, e.g.:
+
+```bash
+DST_NETWORK=optimism-goerli npx hardhat run scripts/clone-multisig.ts
+```
+
 ### Liquidation Bot
 
 This repo includes a contract (Liquidator.sol) that will absorb an underwater

hardhat.config.ts

@@ -6,6 +6,7 @@ import '@nomiclabs/hardhat-ethers';
 import '@nomiclabs/hardhat-etherscan';
 import '@typechain/hardhat';
 import 'hardhat-chai-matchers';
+import 'hardhat-change-network';
 import 'hardhat-contract-sizer';
 import 'hardhat-cover';
 import 'hardhat-gas-reporter';

package.json

@@ -57,6 +57,8 @@
     "@ethersproject/experimental": "^5.6.3",
     "@nomiclabs/hardhat-ethers": "^2.0.4",
     "@nomiclabs/hardhat-etherscan": "3.0.0",
+    "@safe-global/safe-core-sdk": "^3.3.2",
+    "@safe-global/safe-ethers-lib": "^1.9.2",
     "@typechain/ethers-v5": "^8.0.2",
     "@typechain/hardhat": "^3.0.0",
     "@types/chai": "^4.2.22",
@@ -68,10 +70,11 @@
     "chalk": "^5.0.0",
     "dotenv": "^10.0.0",
     "eslint": "^8.12.0",
-    "ethers": "^5.7.1",
+    "ethers": "^5.7.2",
     "fast-glob": "^3.2.7",
     "hardhat": "https://github.com/jflatow/hardhat/releases/download/viaIR/hardhat-v2.12.0.tgz",
     "hardhat-chai-matchers": "https://github.com/jflatow/hardhat/releases/download/viaIR/nomicfoundation-hardhat-chai-matchers-v1.0.4.tgz",
+    "hardhat-change-network": "^0.0.7",
     "hardhat-contract-sizer": "^2.4.0",
     "hardhat-cover": "compound-finance/hardhat-cover",
     "hardhat-gas-reporter": "^1.0.7",

plugins/scenario/utils/hreForBase.ts

@@ -8,6 +8,7 @@ import { HARDHAT_PARAM_DEFINITIONS } from 'hardhat/internal/core/params/hardhat-
 import { Environment } from 'hardhat/internal/core/runtime-environment';
 import { ForkSpec } from '../World';
 import { HttpNetworkUserConfig } from 'hardhat/types';
+import { EthereumProvider } from "hardhat/types/provider";
 
 /*
 mimics https://github.com/nomiclabs/hardhat/blob/master/packages/hardhat-core/src/internal/lib/hardhat-lib.ts
@@ -24,11 +25,14 @@ additional packages that alter the HardhatRuntimeEnvironment interface.
 
 ethers type extension: https://github.com/nomiclabs/hardhat/blob/master/packages/hardhat-ethers/src/internal/type-extensions.ts
 waffle type extension: https://github.com/nomiclabs/hardhat/blob/master/packages/hardhat-waffle/src/type-extensions.ts
+change network extension: https://github.com/dmihal/hardhat-change-network/blob/master/src/type-extensions.ts
 */
 declare module 'hardhat/internal/core/runtime-environment' {
   interface Environment {
     waffle: any;
     ethers: typeof ethers & HardhatEthersHelpers;
+    changeNetwork(newNetwork: string): void;
+    getProvider(newNetwork: string): EthereumProvider;
   }
 }
 

scripts/clone-multisig.ts

@@ -0,0 +1,44 @@
+import hre from 'hardhat';
+import { DeploymentManager } from '../plugins/deployment_manager/DeploymentManager';
+import { SafeFactory } from '@safe-global/safe-core-sdk';
+import EthersAdapter from '@safe-global/safe-ethers-lib';
+
+const SRC_NETWORK = process.env['SRC_NETWORK'] ?? 'mainnet';
+const DST_NETWORK = process.env['DST_NETWORK'] ?? 'hardhat';
+
+async function main() {
+  await hre.changeNetwork(SRC_NETWORK);
+
+  const dm = new DeploymentManager(SRC_NETWORK, 'usdc', hre);
+
+  const signer_ = await dm.getSigner();
+  const comet = await dm.contract('comet');
+  const guardian = await comet.pauseGuardian();
+
+  // Get owners and threshold from existing multisig
+  const GnosisABI = [
+    {"constant":true,"inputs":[],"name":"getOwners","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"payable":false,"stateMutability":"view","type":"function"},
+    {"constant":true,"inputs":[],"name":"getThreshold","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},
+  ];
+  const GnosisSafeContract = new hre.ethers.Contract(guardian, GnosisABI, hre.ethers.provider);
+  const owners = await GnosisSafeContract.getOwners();
+  const threshold = await GnosisSafeContract.getThreshold();
+  const safeAccountConfig = { owners: owners, threshold: threshold};
+  console.log(safeAccountConfig);
+  console.log(guardian);
+
+  await hre.changeNetwork(DST_NETWORK);
+
+  const signer = await hre.ethers.provider.getSigner(signer_.address);
+  const ethAdapter = new EthersAdapter({ ethers: hre.ethers, signerOrProvider: signer });
+  const safeFactory = await SafeFactory.create({ ethAdapter: ethAdapter });
+  const safeSdk = await safeFactory.deploySafe({ safeAccountConfig });
+  console.log(safeSdk);
+}
+
+main()
+  .then(() => process.exit(0))
+  .catch((error) => {
+    console.error(error);
+    process.exit(1);
+  });