From e14c0ff81fa5cb3086d4b6e1fdb565b721b1f0ad Mon Sep 17 00:00:00 2001
From: lukaw3d <lukajeran@oasislabs.com>
Date: Thu, 12 Sep 2024 03:27:49 +0200
Subject: [PATCH] Detect ERC-1167 Minimal Proxy contracts

---
 .changelog/1538.feature.md                    |  1 +
 .../Account/RuntimeAccountDetailsView.tsx     | 10 ++++++++
 .../extractMinimalProxyERC1167.ts             | 23 +++++++++++++++++++
 .../TokenDashboardPage/TokenDetailsCard.tsx   | 10 ++++++++
 src/locales/en/translation.json               |  3 ++-
 5 files changed, 46 insertions(+), 1 deletion(-)
 create mode 100644 .changelog/1538.feature.md
 create mode 100644 src/app/components/ContractVerificationIcon/extractMinimalProxyERC1167.ts

diff --git a/.changelog/1538.feature.md b/.changelog/1538.feature.md
new file mode 100644
index 000000000..1ed1c8978
--- /dev/null
+++ b/.changelog/1538.feature.md
@@ -0,0 +1 @@
+Detect ERC-1167 Minimal Proxy contracts
diff --git a/src/app/components/Account/RuntimeAccountDetailsView.tsx b/src/app/components/Account/RuntimeAccountDetailsView.tsx
index 5b1ce1e48..3506a7bc3 100644
--- a/src/app/components/Account/RuntimeAccountDetailsView.tsx
+++ b/src/app/components/Account/RuntimeAccountDetailsView.tsx
@@ -22,6 +22,7 @@ import { calculateFiatValue } from '../Balance/hooks'
 import { FiatMoneyAmount } from '../Balance/FiatMoneyAmount'
 import { getFiatCurrencyForScope, showFiatValues } from '../../../config'
 import { CardEmptyState } from '../CardEmptyState'
+import { extractMinimalProxyERC1167 } from '../ContractVerificationIcon/extractMinimalProxyERC1167'
 
 type RuntimeAccountDetailsViewProps = {
   isLoading?: boolean
@@ -103,6 +104,15 @@ export const RuntimeAccountDetailsView: FC<RuntimeAccountDetailsViewProps> = ({
         </>
       )}
 
+      {extractMinimalProxyERC1167(account) && (
+        <>
+          <dt>{t('contract.verification.proxyERC1167')}</dt>
+          <dd>
+            <AccountLink scope={account} address={extractMinimalProxyERC1167(account)!} />
+          </dd>
+        </>
+      )}
+
       {contract && (
         <>
           <dt>{t('contract.creator')}</dt>
diff --git a/src/app/components/ContractVerificationIcon/extractMinimalProxyERC1167.ts b/src/app/components/ContractVerificationIcon/extractMinimalProxyERC1167.ts
new file mode 100644
index 000000000..99afe1ad5
--- /dev/null
+++ b/src/app/components/ContractVerificationIcon/extractMinimalProxyERC1167.ts
@@ -0,0 +1,23 @@
+import { RuntimeAccount } from '../../../oasis-nexus/api'
+import { base64ToHex } from '../../utils/helpers'
+import { toChecksumAddress } from '@ethereumjs/util'
+
+/** https://eips.ethereum.org/EIPS/eip-1167 */
+export function extractMinimalProxyERC1167(account: RuntimeAccount) {
+  if (!account?.evm_contract?.runtime_bytecode) return undefined
+
+  const hexBytecode = base64ToHex(account.evm_contract.runtime_bytecode)
+
+  const proxyToAddress1 = hexBytecode.match(
+    /^0x363d3d373d3d3d363d73([0-9a-fA-F]{40})5af43d82803e903d91602b57fd5bf3$/,
+  )?.[1]
+  if (proxyToAddress1) return toChecksumAddress(`0x${proxyToAddress1}`)
+
+  // Optimized version
+  const proxyToAddress2 = hexBytecode.match(
+    /^0x363d3d373d3d3d363d6f([0-9a-fA-F]{32})5af43d82803e903d91602757fd5bf3$/,
+  )?.[1]
+  if (proxyToAddress2) return toChecksumAddress(`0x00000000${proxyToAddress2}`)
+
+  return undefined
+}
diff --git a/src/app/pages/TokenDashboardPage/TokenDetailsCard.tsx b/src/app/pages/TokenDashboardPage/TokenDetailsCard.tsx
index d586c7089..6cd050243 100644
--- a/src/app/pages/TokenDashboardPage/TokenDetailsCard.tsx
+++ b/src/app/pages/TokenDashboardPage/TokenDetailsCard.tsx
@@ -21,6 +21,7 @@ import { tokenHoldersContainerId } from '../../pages/TokenDashboardPage/TokenHol
 import { RoundedBalance } from 'app/components/RoundedBalance'
 import { HighlightedText } from '../../components/HighlightedText'
 import { RuntimeBalanceDisplay } from '../../components/Balance/RuntimeBalanceDisplay'
+import { extractMinimalProxyERC1167 } from '../../components/ContractVerificationIcon/extractMinimalProxyERC1167'
 
 export const TokenDetailsCard: FC<{ scope: SearchScope; address: string; searchTerm: string }> = ({
   scope,
@@ -66,6 +67,15 @@ export const TokenDetailsCard: FC<{ scope: SearchScope; address: string; searchT
               />
             </dd>
 
+            {extractMinimalProxyERC1167(account) && (
+              <>
+                <dt>{t('contract.verification.proxyERC1167')}</dt>
+                <dd>
+                  <AccountLink scope={account} address={extractMinimalProxyERC1167(account)!} />
+                </dd>
+              </>
+            )}
+
             <dt>{t('common.type')} </dt>
             <dd>
               <TokenTypeTag tokenType={token.type} />
diff --git a/src/locales/en/translation.json b/src/locales/en/translation.json
index 2d733f2c5..edcaa860c 100644
--- a/src/locales/en/translation.json
+++ b/src/locales/en/translation.json
@@ -175,7 +175,8 @@
       "openInAbiPlayground": "Interact in <AbiPlaygroundLink>ABI Playground</AbiPlaygroundLink>",
       "openInSourcify": "Open in <SourcifyLink>Sourcify</SourcifyLink>",
       "verifyInSourcify": "Verify through <SourcifyLink>Sourcify</SourcifyLink>",
-      "explainVerificationDelay": "If you have just verified a contract, it should take a few minutes to update here."
+      "explainVerificationDelay": "If you have just verified a contract, it should take a few minutes to update here.",
+      "proxyERC1167": "ERC-1167 proxy to"
     }
   },
   "consensusSnapshot": {