106 lines
3.1 KiB
TypeScript
106 lines
3.1 KiB
TypeScript
import Tx from 'ethereumjs-tx';
|
|
import { bufferToHex } from 'ethereumjs-util';
|
|
import { Wei } from 'libs/units';
|
|
import { isValidETHAddress } from 'libs/validators';
|
|
import { IFullWallet } from 'libs/wallet';
|
|
import { translateRaw } from 'translations';
|
|
import { ITransaction, IHexStrTransaction } from '../typings';
|
|
import { hexEncodeQuantity, hexEncodeData } from 'libs/nodes/rpc/utils';
|
|
|
|
// we dont include the signature paramaters because web3 transactions are unsigned
|
|
const computeIndexingHash = (tx: Buffer) => bufferToHex(makeTransaction(tx).hash(false));
|
|
|
|
// Get useable fields from an EthTx object.
|
|
const getTransactionFields = (t: Tx): IHexStrTransaction => {
|
|
// For some crazy reason, toJSON spits out an array, not keyed values.
|
|
const { data, gasLimit, gasPrice, to, nonce, value } = t;
|
|
|
|
const chainId = t.getChainId();
|
|
|
|
return {
|
|
value: hexEncodeQuantity(value),
|
|
data: hexEncodeData(data),
|
|
// To address is unchecksummed, which could cause mismatches in comparisons
|
|
to: hexEncodeData(to),
|
|
// Everything else is as-is
|
|
nonce: hexEncodeQuantity(nonce),
|
|
gasPrice: hexEncodeQuantity(gasPrice),
|
|
gasLimit: hexEncodeQuantity(gasLimit),
|
|
chainId
|
|
};
|
|
};
|
|
|
|
/**
|
|
* @description Return the minimum amount of ether needed
|
|
* @param t
|
|
*/
|
|
const enoughBalanceViaTx = (t: Tx | ITransaction, accountBalance: Wei) =>
|
|
makeTransaction(t)
|
|
.getUpfrontCost()
|
|
.lte(accountBalance);
|
|
|
|
/**
|
|
* @description Return the minimum amount of gas needed (for gas limit validation)
|
|
* @param t
|
|
*/
|
|
const validGasLimit = (t: ITransaction) =>
|
|
makeTransaction(t)
|
|
.getBaseFee()
|
|
.lte(t.gasLimit);
|
|
|
|
/**
|
|
* @description Check that gas limits and prices are within valid ranges
|
|
* @param t
|
|
*/
|
|
const gasParamsInRange = (t: ITransaction) => {
|
|
if (t.gasLimit.ltn(21000)) {
|
|
throw Error('Gas limit must be at least 21000 for transactions');
|
|
}
|
|
if (t.gasLimit.gtn(5000000)) {
|
|
throw Error(translateRaw('GETH_GasLimit'));
|
|
}
|
|
if (t.gasPrice.gt(Wei('1000000000000'))) {
|
|
throw Error('Gas price too high. Please contact support if this was not a mistake.');
|
|
}
|
|
};
|
|
|
|
const validAddress = (t: ITransaction) => {
|
|
if (!isValidETHAddress(bufferToHex(t.to))) {
|
|
throw Error(translateRaw('ERROR_5'));
|
|
}
|
|
};
|
|
|
|
const makeTransaction = (
|
|
t: Partial<Tx> | Partial<ITransaction> | Partial<IHexStrTransaction> | Buffer | string
|
|
) => new Tx(t);
|
|
|
|
//TODO: check that addresses are always checksummed
|
|
const signTx = async (t: ITransaction, w: IFullWallet) => {
|
|
const tx = makeTransaction(t);
|
|
const signedTx = await w.signRawTransaction(tx); //returns a serialized, signed tx
|
|
return signedTx; //instead of returning the rawTx with it, we can derive it from the signedTx anyway
|
|
};
|
|
|
|
const validateTx = (t: ITransaction, accountBalance: Wei, isOffline: boolean) => {
|
|
gasParamsInRange(t);
|
|
if (!isOffline && !validGasLimit(t)) {
|
|
throw Error('Not enough gas supplied');
|
|
}
|
|
if (!enoughBalanceViaTx(t, accountBalance)) {
|
|
throw Error(translateRaw('GETH_Balance'));
|
|
}
|
|
validAddress(t);
|
|
};
|
|
|
|
export {
|
|
signTx,
|
|
validAddress,
|
|
validGasLimit,
|
|
enoughBalanceViaTx,
|
|
gasParamsInRange,
|
|
validateTx,
|
|
makeTransaction,
|
|
getTransactionFields,
|
|
computeIndexingHash
|
|
};
|