Verify if valid address is a contract address

libs/remix-ui/run-tab/src/lib/actions/deploy.ts

@@ -6,6 +6,7 @@ import { DeployMode, MainnetPrompt } from "../types"
 import { displayNotification, displayPopUp, setDecodedResponse } from "./payload"
 import { addInstance } from "./actions"
 import { addressToString, logBuilder } from "@remix-ui/helper"
+import Web3 from "web3"
 
 declare global {
   interface Window {
@@ -322,4 +323,16 @@ export const updateInstanceBalance = (plugin: RunTab) => {
       })
     }
   }
+}
+
+export const isValidContractAddress = async (plugin: RunTab, address: string) => {
+  if (!address) {
+    return false
+  } else {
+    if (Web3.utils.isAddress(address)) {
+      return await plugin.blockchain.web3().eth.getCode(address) !== '0x'
+    } else {
+      return false
+    }
+  }
 }

libs/remix-ui/run-tab/src/lib/actions/index.ts

@@ -6,7 +6,7 @@ import { createNewBlockchainAccount, fillAccountsList, setExecutionContext, sign
 import { clearInstances, clearPopUp, removeInstance, setAccount, setGasFee, setMatchPassphrasePrompt, 
   setNetworkNameFromProvider, setPassphrasePrompt, setSelectedContract, setSendTransactionValue, setUnit, 
   updateBaseFeePerGas, updateConfirmSettings, updateGasPrice, updateGasPriceStatus, updateMaxFee, updateMaxPriorityFee, updateScenarioPath } from './actions'
-import { createInstance, getContext, getFuncABIInputs, getSelectedContract, loadAddress, runTransactions, updateInstanceBalance, syncContractsInternal } from './deploy'
+import { createInstance, getContext, getFuncABIInputs, getSelectedContract, loadAddress, runTransactions, updateInstanceBalance, syncContractsInternal, isValidContractAddress } from './deploy'
 import { CompilerAbstract as CompilerAbstractType } from '@remix-project/remix-solidity-ts'
 import { ContractData, FuncABI } from "@remix-project/core-plugin"
 import { DeployMode, MainnetPrompt } from '../types'
@@ -61,4 +61,5 @@ export const setScenarioPath = (path: string) => updateScenarioPath(dispatch, pa
 export const getFuncABIValues = (funcABI: FuncABI) => getFuncABIInputs(plugin, funcABI)
 export const setNetworkName = (networkName: string) => setNetworkNameFromProvider(dispatch, networkName)
 export const updateSelectedContract = (contractName) => setSelectedContract(dispatch, contractName)
-export const syncContracts = () => syncContractsInternal(plugin)
+export const syncContracts = () => syncContractsInternal(plugin)
+export const isValidProxyAddress = (address: string) => isValidContractAddress(plugin, address)

libs/remix-ui/run-tab/src/lib/components/contractDropdownUI.tsx

@@ -312,6 +312,7 @@ export function ContractDropdownUI(props: ContractDropdownProps) {
                 evmBC={loadedContractData.bytecodeObject}
                 lookupOnly={false}
                 savedProxyAddress={proxyKey}
+                isValidProxyAddress={props.isValidProxyAddress}
               />
               <div className="d-flex py-1 align-items-center custom-control custom-checkbox">
                 <input

libs/remix-ui/run-tab/src/lib/components/contractGUI.tsx

@@ -243,11 +243,11 @@ export function ContractGUI (props: ContractGUIProps) {
     setProxyAddress(value)
   }
 
-  const validateProxyAddress = (address: string) => {
+  const validateProxyAddress = async (address: string) => {
     if (address === '') {
       setProxyAddressError('proxy address cannot be empty')
     } else {
-      if (Web3.utils.isAddress(address)) {
+      if (await props.isValidProxyAddress(address)) {
         setProxyAddressError('')
       } else {
         setProxyAddressError('not a valid contract address')

libs/remix-ui/run-tab/src/lib/run-tab.tsx

@@ -27,7 +27,7 @@ import {
   storeNewScenario, runScenario,
   setScenarioPath, getFuncABIValues,
   setNetworkName, updateSelectedContract,
-  syncContracts
+  syncContracts, isValidProxyAddress
 } from './actions'
 import './css/run-tab.css'
 import { PublishToStorage } from '@remix-ui/publish-to-storage'
@@ -242,6 +242,7 @@ export function RunTabUI (props: RunTabProps) {
             setNetworkName={setNetworkName}
             setSelectedContract={updateSelectedContract}
             remixdActivated={runTab.remixdActivated}
+            isValidProxyAddress={isValidProxyAddress}
           />
           <RecorderUI
             gasEstimationPrompt={gasEstimationPrompt}

libs/remix-ui/run-tab/src/lib/types/index.ts

@@ -165,7 +165,8 @@ export interface ContractDropdownProps {
   networkName: string,
   setNetworkName: (name: string) => void,
   setSelectedContract: (contractName: string) => void
-  remixdActivated: boolean
+  remixdActivated: boolean,
+  isValidProxyAddress?: (address: string) => Promise<boolean>
 }
 
 export interface RecorderProps {
@@ -260,7 +261,8 @@ export interface ContractGUIProps {
   isDeploy?: boolean,
   deployOption?: { title: DeployMode, active: boolean }[],
   initializerOptions?: DeployOption,
-  savedProxyAddress?: string
+  savedProxyAddress?: string,
+  isValidProxyAddress?: (address: string) => Promise<boolean>
 }
 export interface MainnetProps {
   network: Network,