Portal - EVM wrapped tokens 'to' address change

Wormhole wrapped tokens are burned by the bridge when transferred out from a
chain, thus the `to` argument in the wrapped token contract's `Transfer` event is the
EVM zero-address. However wormhole wrapped tokens are never double-wrapped, so
they should be included in the volume when they're not being sent back to their
origination chain where they'd be included in the withdrawal volume when unlocked. This
change is consistent with DefiLlama's volume calculation methodology of not double
counting token transfers in the volume.

src/adapters/portal/index.ts

@@ -127,8 +127,9 @@ const portalNativeAndWrappedTransfersFromHashes = async (chain: Chain, hashes: s
         // for deposits there will be a `LogMessagePublished` event
         const logMessagePublished = tryParseLog(log, logMessagePublishedIface);
         if (logMessagePublished) {
+          const payload = Buffer.from(logMessagePublished.args.payload.slice(2), "hex");
           // only care about token transfer message types (payload ID = 1 or 3)
-          const payloadID = parseInt(logMessagePublished.args.payload.slice(0, 4));
+          const payloadID = payload.readUint8(0);
           if (!(payloadID === 1 || payloadID === 3)) {
             return results;
           }
@@ -142,9 +143,21 @@ const portalNativeAndWrappedTransfersFromHashes = async (chain: Chain, hashes: s
           const transfer = tryParseLog(previousLog, transferIface);
           // lock or burn
           let to = "";
+          let isDeposit = true;
           if (transfer && (transfer.args.to === tokenBridge || transfer.args.to === ethers.constants.AddressZero)) {
             amount = transfer.args.value;
             to = transfer.args.to;
+            if (to === ethers.constants.AddressZero) {
+              // if this is a wrapped token being burned and not being sent to its origin chain,
+              // then it should be included in the volume by fixing the to address
+              // https://docs.wormhole.com/wormhole/explore-wormhole/vaa#token-transfer
+              const originChain = payload.readUint16BE(65);
+              const toChain = payload.readUInt16BE(99);
+              if (toChain !== originChain) {
+                to = tokenBridge;
+                isDeposit = false;
+              }
+            }
           } else {
             const deposit = tryParseLog(previousLog, depositIface);
             // lock
@@ -161,7 +174,7 @@ const portalNativeAndWrappedTransfersFromHashes = async (chain: Chain, hashes: s
               to,
               token: previousLog.address,
               amount,
-              isDeposit: true,
+              isDeposit,
             });
             return results;
           }
@@ -291,7 +304,7 @@ const constructParams = (chain: string) => {
     // only able to get from subgraph, Etherscan API, etc.
     // skipped for chains without available API
     // TODO: change this when the token bridge emits the `TransferRedeemed` event
-    if (chain !== "klaytn") {
+    if (chain !== "klaytn" && chain !== "base" && chain !== "moonbeam") {
       await getLock();
       const txs = await getTxsBlockRangeEtherscan(chain, tokenBridge, fromBlock, toBlock, {
         includeSignatures: completeTransferSigs,

src/adapters/portal/tests.ts

@@ -275,10 +275,10 @@ const testAvalanche = async () => {
       blockNumber,
       txHash: "0x3841246c0c1f4aa9190cdacddcd3eac6d8bf10562fc2e2b4615484e0694394e6",
       from: "0x31eeE3D36b30E26e733B9e11f112c2cb87AbF618",
-      to: "0x0000000000000000000000000000000000000000",
+      to: "0x0e082F06FF657D94310cB8cE8B0D9a04541d8052",
       token: "0xDfDA518A1612030536bD77Fd67eAcbe90dDC52Ab",
       amount: ethers.BigNumber.from("14000000000000000000"),
-      isDeposit: true,
+      isDeposit: false,
     },
     event
   );