From 75373f7d07badc551af354d4112388961a639fcd Mon Sep 17 00:00:00 2001
From: Makoto Inoue <2630+makoto@users.noreply.github.com>
Date: Mon, 13 Nov 2023 18:13:45 +0000
Subject: [PATCH] Add getaddr

---
 crosschain-resolver/README.md          | 15 ++++++++-
 crosschain-resolver/package.json       |  1 +
 crosschain-resolver/scripts/getaddr.ts | 46 ++++++++++++++++++++++++++
 3 files changed, 61 insertions(+), 1 deletion(-)
 create mode 100644 crosschain-resolver/scripts/getaddr.ts

diff --git a/crosschain-resolver/README.md b/crosschain-resolver/README.md
index ff132c63..a51473a8 100644
--- a/crosschain-resolver/README.md
+++ b/crosschain-resolver/README.md
@@ -108,9 +108,18 @@ const l2resolverAddress = await DelegatableResolverFactory.predictAddress(OWNER_
 await DelegatableResolverFactory.create(OWNER_ADDRESS)
 await DelegatableResolverFactory['setAddr(bytes32,address)'](node, OWNER_ADDRESS)
 // On L1
-await L1Resolver['addr(bytes32)'](node, {enableCcipRead:true})
+const abi = [
+  "function addr(bytes32) view returns (address)",
+  "function resolve(bytes,bytes) view returns (bytes)",
+]
+const i = new ethers.Interface(abi)
+const calldata = i.encodeFunctionData("addr", [node])
+const result2 = await l1resolver.resolve(encodedname, calldata, { enableCcipRead: true })
+const address = i.decodeFunctionResult("addr", result2)[0]
 ```
 
+NOTE: The l1 resolver must be queried through `resolve` function to handle subnames
+
 Or run the script
 
 ```
@@ -121,4 +130,8 @@ DEPLOYER_PRIVATE_KEY=$DEPLOYER_PRIVATE_KEY L1_PROVIDER_URL=$L1_PROVIDER_URL L2_P
 DEPLOYER_PRIVATE_KEY=$DEPLOYER_PRIVATE_KEY L1_PROVIDER_URL=$L1_PROVIDER_URL L2_PROVIDER_URL=$L2_PROVIDER_URL L1_ETHERSCAN_API_KEY=$L1_ETHERSCAN_API_KEY L2_ETHERSCAN_API_KEY=$L2_ETHERSCAN_API_KEY L2_PROVIDER_URL=$L2_PROVIDER_URL L2_RESOLVER_FACTORY_ADDRESS=$L2_RESOLVER_FACTORY_ADDRESS ENS_NAME=$ENS_NAME yarn setupl2
 ```
 
+```
+L1_PROVIDER_URL=$L1_PROVIDER_URL L1_ETHERSCAN_API_KEY=$L1_ETHERSCAN_API_KEY L2_ETHERSCAN_API_KEY=$L2_ETHERSCAN_API_KEY L2_PROVIDER_URL=$L2_PROVIDER_URL  ENS_NAME=$ENS_NAME yarn getaddr
+```
+
 ### Issue subname to L2
\ No newline at end of file
diff --git a/crosschain-resolver/package.json b/crosschain-resolver/package.json
index 12b48103..758f94aa 100644
--- a/crosschain-resolver/package.json
+++ b/crosschain-resolver/package.json
@@ -9,6 +9,7 @@
     "clean": "rm -fr artifacts cache node_modules typechain-types",
     "setupl1": "hardhat run scripts/setupl1.ts --network goerli",
     "setupl2": "hardhat run scripts/setupl2.ts --network optimismGoerli",
+    "getaddr": "hardhat run scripts/getaddr.ts --network goerli",
     "lint": "exit 0"
   },
   "devDependencies": {
diff --git a/crosschain-resolver/scripts/getaddr.ts b/crosschain-resolver/scripts/getaddr.ts
new file mode 100644
index 00000000..a768c768
--- /dev/null
+++ b/crosschain-resolver/scripts/getaddr.ts
@@ -0,0 +1,46 @@
+import hre from 'hardhat';
+import packet from 'dns-packet';
+const abi = ['function name(bytes32) view returns(string)'];
+const encodeName = (name) => '0x' + packet.name.encode(name).toString('hex')
+const l1abi = [
+  "function getTarget(bytes,uint256) view returns (bytes32, address)",
+  "function addr(bytes32) view returns (address)",
+  "function resolve(bytes,bytes) view returns (bytes)",
+]
+
+const l2abi = [
+  "function addr(bytes32) view returns (address)"
+]
+
+import {ethers} from 'ethers';
+export const main = async () => {
+  if (!process.env.L1_PROVIDER_URL || !process.env.ENS_NAME)
+    throw 'Set L1_PROVIDER_URL and ENS_NAME';
+
+  const L1_PROVIDER_URL = process.env.L1_PROVIDER_URL;
+  const L2_PROVIDER_URL = process.env.L2_PROVIDER_URL;
+  const ENS_NAME        = process.env.ENS_NAME;
+  const encodedname     = encodeName(ENS_NAME)
+  const node            = ethers.namehash(ENS_NAME)
+
+  const l1provider      = new ethers.JsonRpcProvider(L1_PROVIDER_URL);
+  const l2provider      = new ethers.JsonRpcProvider(L2_PROVIDER_URL);
+  const resolver        = await l1provider.getResolver(ENS_NAME)
+  const l1resolver      = new ethers.Contract(resolver.address, l1abi, l1provider);
+  const target          = await l1resolver.getTarget(encodedname, 0)
+  const l2resolverAddress = target[1]
+  console.log('Target is set to ' + l2resolverAddress);
+  const l2resolver        = new ethers.Contract(l2resolverAddress, l2abi, l2provider);
+  const l2address         = await l2resolver['addr(bytes32)'](node)
+  console.log('L2 query result ' + l2address);
+  const i = new ethers.Interface(l1abi)
+  const calldata = i.encodeFunctionData("addr", [node])
+  const result2 = await l1resolver.resolve(encodedname, calldata, { enableCcipRead: true })
+  const decoded = i.decodeFunctionResult("addr", result2)
+  console.log('L1 query result ' + decoded[0]);
+  // These should also work but somehow not working. Mabye some inconsistent resolver interface?
+  console.log(await l1provider.resolveName(ENS_NAME));
+  console.log(await resolver.getAddress());
+};
+
+main();
\ No newline at end of file