@ledgerhq/coin-stellar
Version:
Ledger Stellar Coin integration
67 lines • 2.26 kB
JavaScript
import { BigNumber } from "bignumber.js";
import { StrKey } from "@stellar/stellar-sdk";
import { findSubAccountById } from "@ledgerhq/coin-framework/account/helpers";
import { fetchSigners } from "../network";
export const STELLAR_BURN_ADDRESS = "GAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAWHF";
export function getAmountValue(account, transaction, fees) {
// Asset
if (transaction.subAccountId) {
const asset = findSubAccountById(account, transaction.subAccountId);
return transaction.useAllAmount ? new BigNumber(asset.spendableBalance) : transaction.amount;
}
// Native
return transaction.useAllAmount && transaction.networkInfo
? BigNumber.max(account.spendableBalance.minus(fees), 0)
: transaction.amount;
}
export function getAssetCodeIssuer(tr) {
if (tr.subAccountId) {
const assetString = tr.subAccountId.split("+")[1];
return assetString.split(":");
}
return [tr.assetCode || "", tr.assetIssuer || ""];
}
export function isMemoValid(memoType, memoValue) {
switch (memoType) {
case "MEMO_TEXT":
if (memoValue.length > 28) {
return false;
}
break;
case "MEMO_ID":
if (new BigNumber(memoValue.toString()).isNaN()) {
return false;
}
break;
case "MEMO_HASH":
case "MEMO_RETURN":
if (!memoValue.length || memoValue.length !== 64) {
return false;
}
break;
}
return true;
}
export async function isAccountMultiSign(account) {
const signers = await fetchSigners(account);
return signers.length > 1;
}
/**
* Returns true if address is valid, false if it's invalid (can't parse or wrong checksum)
*
* @param {*} address
*/
export function isAddressValid(address) {
if (!address)
return false;
// FIXME Workaround for burn address, see https://ledgerhq.atlassian.net/browse/LIVE-4014
if (address === STELLAR_BURN_ADDRESS)
return false;
try {
return StrKey.isValidEd25519PublicKey(address) || StrKey.isValidMed25519PublicKey(address);
}
catch (err) {
return false;
}
}
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