Use Entrypoint's provided hashing function to support v0.8.0 change of hash (#5586)

Co-authored-by: ernestognw <ernestognw@gmail.com>
Co-authored-by: Arr00 <13561405+arr00@users.noreply.github.com>

scripts/fetch-common-contracts.js

@@ -0,0 +1,50 @@
+#!/usr/bin/env node
+
+// This script snapshots the bytecode and ABI for the `hardhat/common-contracts.js` script.
+// - Bytecode is fetched directly from the blockchain by querying the provided client endpoint. If no endpoint is
+//   provided, ethers default provider is used instead.
+// - ABI is fetched from etherscan's API using the provided etherscan API key. If no API key is provided, ABI will not
+//   be fetched and saved.
+//
+// The produced artifacts are stored in the `output` folder ('test/bin' by default). For each contract, two files are
+// produced:
+// - `<name>.bytecode` containing the contract bytecode (in binary encoding)
+// - `<name>.abi` containing the ABI (in utf-8 encoding)
+
+const fs = require('fs');
+const path = require('path');
+const { ethers } = require('ethers');
+const { request } = require('undici');
+const { hideBin } = require('yargs/helpers');
+const { argv } = require('yargs/yargs')(hideBin(process.argv))
+  .env('')
+  .options({
+    output: { type: 'string', default: 'test/bin/' },
+    client: { type: 'string' },
+    etherscan: { type: 'string' },
+  });
+
+// List of contract names and addresses to fetch
+const config = {
+  EntryPoint070: '0x0000000071727De22E5E9d8BAf0edAc6f37da032',
+  SenderCreator070: '0xEFC2c1444eBCC4Db75e7613d20C6a62fF67A167C',
+  EntryPoint080: '0x4337084D9E255Ff0702461CF8895CE9E3b5Ff108',
+  SenderCreator080: '0x449ED7C3e6Fee6a97311d4b55475DF59C44AdD33',
+};
+
+Promise.all(
+  Object.entries(config).flatMap(([name, addr]) =>
+    Promise.all([
+      argv.etherscan &&
+        request(`https://api.etherscan.io/api?module=contract&action=getabi&address=${addr}&apikey=${argv.etherscan}`)
+          .then(({ body }) => body.json())
+          .then(({ result: abi }) => fs.writeFile(path.join(argv.output, `${name}.abi`), abi, 'utf-8', () => {})),
+      ethers
+        .getDefaultProvider(argv.client)
+        .getCode(addr)
+        .then(bytecode =>
+          fs.writeFile(path.join(argv.output, `${name}.bytecode`), ethers.getBytes(bytecode), 'binary', () => {}),
+        ),
+    ]),
+  ),
+);