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FE LiFi: Revoke approvals #2874
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8ebade8
Init lifi approval revoke page
aureliusbtc 1244bde
get rid of victim address and use connected address
aureliusbtc 5382c4e
Add some text
aureliusbtc 84788c6
Only show approval data once connected
aureliusbtc 8c6a56c
Multi-chain checker
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Original file line number | Diff line number | Diff line change |
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import Grid from '@tw/Grid' | ||
import { useEffect, useState } from 'react' | ||
import { useAccount, useAccountEffect, useSwitchChain } from 'wagmi' | ||
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import { LandingPageWrapper } from '@layouts/LandingPageWrapper' | ||
import StandardPageContainer from '@layouts/StandardPageContainer' | ||
import { getErc20TokenAllowance } from '@/actions/getErc20TokenAllowance' | ||
import { approveToken } from '@/utils/approveToken' | ||
import { TransactionButton } from '@/components/buttons/TransactionButton' | ||
import { useConnectModal } from '@rainbow-me/rainbowkit' | ||
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const CHAIN_IDS = [1, 42161, 10] | ||
const LIFI_SPENDER = "0x1231deb6f5749ef6ce6943a275a1d3e7486f4eae" | ||
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const TOKENS = { | ||
USDC: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48', | ||
USDT: '0xdac17f958d2ee523a2206206994597c13d831ec7', | ||
WETH: '0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2' | ||
} as const; | ||
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interface TokenAllowances { | ||
[chainId: number]: { | ||
[token: string]: bigint | ||
} | ||
} | ||
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const LifiPage = () => { | ||
const { address, isConnected, chain } = useAccount() | ||
const { chains, switchChain: switchNetwork } = useSwitchChain() | ||
const { openConnectModal } = useConnectModal() | ||
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const [allowances, setAllowances] = useState<TokenAllowances>({}) | ||
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useEffect(() => { | ||
const fetchAllowances = async () => { | ||
if (address) { | ||
const newAllowances: TokenAllowances = {} | ||
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for (const chainId of CHAIN_IDS) { | ||
newAllowances[chainId] = {} | ||
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for (const [tokenName, tokenAddress] of Object.entries(TOKENS)) { | ||
const allowance = await getErc20TokenAllowance({ | ||
address, | ||
chainId, | ||
tokenAddress, | ||
spender: LIFI_SPENDER, | ||
}) | ||
newAllowances[chainId][tokenName] = allowance | ||
} | ||
} | ||
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setAllowances(newAllowances) | ||
} | ||
} | ||
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if (isConnected) { | ||
fetchAllowances() | ||
} | ||
}, [address, isConnected]) | ||
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const handleRevoke = async (chainId: number, tokenName: string, tokenAddress: string) => { | ||
if (chain?.id !== chainId) { | ||
await switchNetwork({chainId: chainId}) | ||
} | ||
await approveToken(LIFI_SPENDER, chainId, tokenAddress, 0n) | ||
setAllowances(prev => ({ | ||
...prev, | ||
[chainId]: { | ||
...prev[chainId], | ||
[tokenName]: 0n | ||
} | ||
})) | ||
} | ||
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return ( | ||
<LandingPageWrapper> | ||
<StandardPageContainer | ||
connectedChainId={chain?.id} | ||
address={address} | ||
> | ||
<div className="flex justify-between"> | ||
<div> | ||
<div className="text-2xl text-white"> | ||
Revoke Li.fi Approvals (Multi-chain) | ||
</div> | ||
</div> | ||
</div> | ||
<div className="py-6"> | ||
<Grid | ||
cols={{ xs: 1 }} | ||
gap={6} | ||
className="justify-center px-2 py-16 sm:px-6 md:px-8" | ||
> | ||
<div className="pb-3 place-self-center"> | ||
<div> | ||
<h3>Li.fi / Jumper is investigating an ongoing exploit, and users should revoke approvals <a className="underline" target="_blank" href="https://x.com/lifiprotocol/status/1813196697641570635">- Li.fi Tweet</a></h3> | ||
<br /> | ||
<h3>Check to see if you have any approvals at risk below:</h3> | ||
<br /> | ||
{isConnected ? ( | ||
CHAIN_IDS.map(chainId => ( | ||
<div key={chainId}> | ||
<h4>Chain ID: {chainId}</h4> | ||
{Object.entries(allowances[chainId] || {}).map(([tokenName, allowance]) => ( | ||
<div key={tokenName}> | ||
{tokenName} Allowance: {allowance.toString()} | ||
{allowance > 0n && ( | ||
<TransactionButton | ||
className="btn btn-primary ml-2" | ||
pendingLabel="Revoking..." | ||
label={`Revoke ${tokenName} Approval`} | ||
onClick={() => handleRevoke(chainId, tokenName, TOKENS[tokenName])} | ||
/> | ||
)} | ||
</div> | ||
))} | ||
</div> | ||
)) | ||
) : ( | ||
<div className="flex flex-col justify-center h-full p-10"> | ||
<TransactionButton | ||
style={{ | ||
background: 'linear-gradient(90deg, rgba(128, 0, 255, 0.2) 0%, rgba(255, 0, 191, 0.2) 100%)', | ||
border: '1px solid #9B6DD7', | ||
borderRadius: '4px', | ||
}} | ||
label="Connect wallet to check for approvals" | ||
pendingLabel="Connecting" | ||
onClick={() => new Promise((resolve) => { | ||
openConnectModal() | ||
resolve(true) | ||
Comment on lines
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. Logic: Using a promise here is redundant since openConnectModal is already a synchronous function. |
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})} | ||
/> | ||
</div> | ||
)} | ||
</div> | ||
</div> | ||
</Grid> | ||
</div> | ||
</StandardPageContainer> | ||
</LandingPageWrapper> | ||
) | ||
} | ||
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export default LifiPage |
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Style: Wrap approveToken call in a try/catch block to handle potential errors.