Use eth-method-registry to get method data

1 files changed, 15 insertions, 0 deletions

diff --git a/ui/app/helpers/confirm-transaction/util.js b/ui/app/helpers/confirm-transaction/util.js
index fa748ca46..ad247a348 100644
--- a/ui/app/helpers/confirm-transaction/util.js
+++ b/ui/app/helpers/confirm-transaction/util.js
@@ -6,6 +6,9 @@ import ethUtil from 'ethereumjs-util'
 
 abiDecoder.addABI(abi)
 
+import MethodRegistry from 'eth-method-registry'
+const registry = new MethodRegistry({ provider: global.ethereumProvider })
+
 import {
   conversionUtil,
   addCurrencies,
@@ -17,6 +20,18 @@ export function getTokenData (data = {}) {
   return abiDecoder.decodeMethod(data)
 }
 
+export async function getMethodData (data = {}) {
+  const prefixedData = ethUtil.addHexPrefix(data)
+  const fourBytePrefix = prefixedData.slice(0, 10)
+  const sig = await registry.lookup(fourBytePrefix)
+  const parsedResult = registry.parse(sig)
+
+  return {
+    name: parsedResult.name,
+    params: parsedResult.args,
+  }
+}
+
 export function increaseLastGasPrice (lastGasPrice) {
   return ethUtil.addHexPrefix(multiplyCurrencies(lastGasPrice, 1.1, {
     multiplicandBase: 16,