near/examples: add attester

near/package.json

@@ -49,6 +49,7 @@
   },
   "scripts": {
     "transferFromNear": "ts-node test/transferFromNear",
-    "transferToNear": "ts-node test/transferToNear"
+    "transferToNear": "ts-node test/transferToNear",
+    "attester": "ts-node test/attester"
   }
 }

near/test/attester.ts

@@ -0,0 +1,141 @@
+// Prerequisites
+// cd ethereum && npm ci
+// cd sdk/js && npm ci && npm run build
+// cd near
+// npm ci
+
+// Run with
+//   NEAR_TOKEN="" NEAR_MNEMONIC="" NEAR_ACCOUNT="" npm run attester
+// or
+//   NEAR_TOKEN="" NEAR_PK="" NEAR_ACCOUNT="" npm run attester
+
+// It is SUPER SUPER important to use the near-api-js that comes from inside wormhole-sdk or all heck breaks lose
+import {
+  Account as nearAccount,
+  connect as nearConnect,
+  keyStores as nearKeyStores,
+  utils as nearUtils,
+} from "@certusone/wormhole-sdk/node_modules/near-api-js";
+
+import {
+  CHAIN_ID_ETH,
+  CHAIN_ID_NEAR,
+  CONTRACTS,
+  attestTokenFromNear,
+  getSignedVAAWithRetry,
+  hexToUint8Array,
+  transferTokenFromNear,
+  uint8ArrayToHex,
+} from "@certusone/wormhole-sdk";
+import { NodeHttpTransport } from "@improbable-eng/grpc-web-node-http-transport";
+// @ts-ignore
+import { parseSeedPhrase } from "near-seed-phrase";
+import colors from "@colors/colors/safe";
+import prompt from "prompt";
+
+export const WORMHOLE_RPC_HOSTS = [
+  "https://wormhole-v2-mainnet-api.certus.one",
+  "https://wormhole.inotel.ro",
+  "https://wormhole-v2-mainnet-api.mcf.rocks",
+  "https://wormhole-v2-mainnet-api.chainlayer.network",
+  "https://wormhole-v2-mainnet-api.staking.fund",
+  "https://wormhole-v2-mainnet.01node.com",
+];
+
+if (!process.env.NEAR_TOKEN) {
+  console.log("NEAR_TOKEN is required");
+  process.exit(1);
+}
+if (!process.env.NEAR_ACCOUNT) {
+  console.log("NEAR_ACCOUNT is required");
+  process.exit(1);
+}
+
+const NEAR_TOKEN_ADDRESS: string = process.env.NEAR_TOKEN;
+
+async function transferTest() {
+  let nearNodeUrl = "https://rpc.mainnet.near.org";
+  let networkId = "mainnet";
+
+  // There are many kinds of keystores...  in this case, I am using a InMemory one
+  let keyStore = new nearKeyStores.InMemoryKeyStore();
+
+  if (process.env.NEAR_MNEMONIC) {
+    let userKeys = parseSeedPhrase(process.env.NEAR_MNEMONIC);
+    let userKey = nearUtils.KeyPair.fromString(userKeys["secretKey"]);
+    keyStore.setKey(networkId, process.env.NEAR_ACCOUNT as string, userKey);
+  } else if (process.env.NEAR_PK) {
+    let userKey = nearUtils.KeyPair.fromString(process.env.NEAR_PK);
+    keyStore.setKey(networkId, process.env.NEAR_ACCOUNT as string, userKey);
+  } else {
+    console.log("NEAR_MNEMONIC or NEAR_PK is required");
+    process.exit(1);
+  }
+
+  // connect to near...
+  let near = await nearConnect({
+    headers: {},
+    deps: {
+      keyStore,
+    },
+    networkId: networkId as string,
+    nodeUrl: nearNodeUrl as string,
+  });
+
+  console.log(
+    "Attesting",
+    NEAR_TOKEN_ADDRESS,
+  );
+
+  prompt.message = "";
+  const { input } = await prompt.get({
+    properties: {
+      input: {
+        description: colors.red(
+          "Are you sure you want to send tokens? THIS CANNOT BE UNDONE! [y/N]"
+        ),
+      },
+    },
+  });
+  if (input !== "y") return;
+
+  // rpc handle
+  const userAccount = new nearAccount(
+    near.connection,
+    process.env.NEAR_ACCOUNT as string
+  );
+
+  let [sequence, emitterAddress] = await attestTokenFromNear(
+    userAccount,
+    CONTRACTS.MAINNET.near.core,
+    CONTRACTS.MAINNET.near.token_bridge,
+    NEAR_TOKEN_ADDRESS
+  );
+
+  if (sequence === -1) {
+    console.log("No sequence found, check above for error");
+    process.exit(1);
+  }
+
+  console.log("emitterAddress:", emitterAddress, "sequence:", sequence);
+
+  console.log(
+    `If this script hangs, try https://wormhole-v2-mainnet-api.certus.one/v1/signed_vaa/15/${emitterAddress}/${sequence.toString()}`
+  );
+
+  const { vaaBytes: signedVAA } = await getSignedVAAWithRetry(
+    WORMHOLE_RPC_HOSTS,
+    CHAIN_ID_NEAR,
+    emitterAddress,
+    sequence.toString(),
+    {
+      transport: NodeHttpTransport(),
+    }
+  );
+
+  console.log("Redeem this on https://www.portalbridge.com/#/redeem");
+  console.log(`Expand "Advanced" and paste this Signed VAA`);
+  console.log(uint8ArrayToHex(signedVAA));
+}
+
+transferTest();