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adding gas limit #4

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merged 6 commits into from
Oct 25, 2024
Merged

adding gas limit #4

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a659c01
adding gas limit
jlafiandra6 Oct 25, 2024
7736d52
comments
jlafiandra6 Oct 25, 2024
8a34ec1
price instead of total
jlafiandra6 Oct 25, 2024
ed79dbb
addres comments
jlafiandra6 Oct 25, 2024
a6cd114
gas error logging
jlafiandra6 Oct 25, 2024
a3a4cfe
vuln scan
jlafiandra6 Oct 25, 2024
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35 changes: 35 additions & 0 deletions src/server.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@ let PROJECT_ID = process.env.PROJECT_ID!
let LOCATION_ID = process.env.LOCATION_ID!
let keyRingId = process.env.KEY_RING_ID!
let keyId = process.env.KEY_ID!
let TX_LIMIT = BigInt(process.env.TX_LIMIT!)
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kmsProvider.setPath({
projectId: PROJECT_ID,
Expand All @@ -35,6 +36,12 @@ app.post('/', async (request, reply) => {
reply.code(400).send({error: 'Invalid request'});
return;
}

let feesValid = await feesTooHigh(result.data);
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if (!feesValid) {
reply.code(400).send({error: `Fees too high TX_LIMIT [${TX_LIMIT}] reached`});
return;
}
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let signedTx = await handleEthSignTransaction(result.data);
reply.code(200).send({result: signedTx});
return;
Expand All @@ -50,6 +57,34 @@ app.get('/address', async (_, reply) => {
return reply.code(200).send(address);
})

async function feesTooHigh(transactionArgs: TransactionArgs) {
let maxFeePerGas = BigInt(0);
let maxPriorityFeePerGas = BigInt(0);
let maxFeePerBlobGas = BigInt(0);
if (transactionArgs.maxFeePerGas ){
maxFeePerGas = BigInt(transactionArgs.maxFeePerGas);
}
if (transactionArgs.maxPriorityFeePerGas) {
maxPriorityFeePerGas = BigInt(transactionArgs.maxPriorityFeePerGas);
}
if (transactionArgs.maxFeePerBlobGas) {
maxFeePerBlobGas = BigInt(transactionArgs.maxFeePerBlobGas);
}

var gasCost = BigInt(transactionArgs.gas) * (maxFeePerGas + maxPriorityFeePerGas);
if (gasCost > TX_LIMIT) {
return false;
}

if (transactionArgs.blobVersionedHashes && transactionArgs.blobVersionedHashes.length > 0) {
var blobGasCost = BigInt(transactionArgs.gas) * maxFeePerBlobGas;
if (blobGasCost > TX_LIMIT) {
return false;
}
}
return true;
}

async function handleEthSignTransaction(transactionArgs: TransactionArgs) {
console.log('Transaction Args:', transactionArgs);
const kzg = await loadKZG()
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