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Prevent a single account from draining the faucet

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This commit is contained in:
Jacob Evans 2018-02-26 18:45:56 -08:00
parent 709fa9e02e
commit addca63938
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GPG Key ID: 2036DA2ADDFB0842
1 changed files with 21 additions and 0 deletions
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21
packages/testnet-faucets/src/ts/dispense_asset_tasks.ts
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@ -9,11 +9,21 @@ import { utils } from './utils';
const DISPENSE_AMOUNT_ETHER = 0.1;
const DISPENSE_AMOUNT_TOKEN = 0.1;
const DISPENSE_MAX_AMOUNT_TOKEN = 5;
const DISPENSE_MAX_AMOUNT_ETHER = 5;
export const dispenseAssetTasks = {
dispenseEtherTask(recipientAddress: string, web3: Web3) {
return async () => {
utils.consoleLog(`Processing ETH ${recipientAddress}`);
const userBalance = await promisify<BigNumber>(web3.eth.getBalance)(recipientAddress);
const maxAmountInWei = new BigNumber(web3.toWei(DISPENSE_MAX_AMOUNT_ETHER, 'ether'));
if (userBalance.greaterThan(maxAmountInWei)) {
utils.consoleLog(
`User exceeded ETH balance maximum (${maxAmountInWei}) ${recipientAddress} ${userBalance} `,
);
return;
}
const sendTransactionAsync = promisify(web3.eth.sendTransaction);
const txHash = await sendTransactionAsync({
from: configs.DISPENSER_ADDRESS,
@ -32,6 +42,17 @@ export const dispenseAssetTasks = {
throw new Error(`Unsupported asset type: ${tokenSymbol}`);
}
const baseUnitAmount = ZeroEx.toBaseUnitAmount(amountToDispense, token.decimals);
const userBalanceBaseUnits = await zeroEx.token.getBalanceAsync(token.address, recipientAddress);
const maxAmountBaseUnits = ZeroEx.toBaseUnitAmount(
new BigNumber(DISPENSE_MAX_AMOUNT_TOKEN),
token.decimals,
);
if (userBalanceBaseUnits.greaterThan(maxAmountBaseUnits)) {
utils.consoleLog(
`User exceeded token balance maximum (${maxAmountBaseUnits}) ${recipientAddress} ${userBalanceBaseUnits} `,
);
return;
}
const txHash = await zeroEx.token.transferAsync(
token.address,
configs.DISPENSER_ADDRESS,