@ledgerhq/hw-app-btc
Version:
Ledger Hardware Wallet Bitcoin Application API
84 lines • 4.07 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.serializeTransaction = exports.serializeTransactionOutputs = void 0;
const varint_1 = require("./varint");
/**
@example
const tx1 = btc.splitTransaction("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");
const outputScript = btc.serializeTransactionOutputs(tx1).toString('hex');
*/
function serializeTransactionOutputs({ outputs }) {
let outputBuffer = Buffer.alloc(0);
if (typeof outputs !== "undefined") {
outputBuffer = Buffer.concat([outputBuffer, (0, varint_1.createVarint)(outputs.length)]);
outputs.forEach(output => {
outputBuffer = Buffer.concat([
outputBuffer,
output.amount,
(0, varint_1.createVarint)(output.script.length),
output.script,
]);
});
}
return outputBuffer;
}
exports.serializeTransactionOutputs = serializeTransactionOutputs;
function serializeTransaction(transaction, skipWitness, timestamp, additionals = []) {
const isDecred = additionals.includes("decred");
const isZcash = additionals.includes("zcash");
const isBech32 = additionals.includes("bech32");
let inputBuffer = Buffer.alloc(0);
const useWitness = typeof transaction["witness"] != "undefined" && !skipWitness;
transaction.inputs.forEach(input => {
inputBuffer =
isDecred || isBech32
? Buffer.concat([
inputBuffer,
input.prevout,
Buffer.from([0x00]), //tree
input.sequence,
])
: Buffer.concat([
inputBuffer,
input.prevout,
(0, varint_1.createVarint)(input.script.length),
input.script,
input.sequence,
]);
});
let outputBuffer = serializeTransactionOutputs(transaction);
if (typeof transaction.outputs !== "undefined" && typeof transaction.locktime !== "undefined") {
outputBuffer = Buffer.concat([
outputBuffer,
(useWitness && transaction.witness) || Buffer.alloc(0),
transaction.locktime,
transaction.nExpiryHeight || Buffer.alloc(0),
transaction.extraData || Buffer.alloc(0),
]);
}
// from to https://zips.z.cash/zip-0225, zcash is different with other coins, the lock_time and nExpiryHeight fields are before the inputs and outputs
if (isZcash) {
return Buffer.concat([
transaction.version,
transaction.nVersionGroupId || Buffer.alloc(0),
Buffer.from([0x55, 0x10, 0xe7, 0xc8]), // Zcash Consensus Branch ID: 0xC8E71055 refer to https://zips.z.cash/zip-0253
transaction.locktime || Buffer.from([0x00, 0x00, 0x00, 0x00]),
transaction.nExpiryHeight || Buffer.from([0x00, 0x00, 0x00, 0x00]),
useWitness ? Buffer.from("0001", "hex") : Buffer.alloc(0),
(0, varint_1.createVarint)(transaction.inputs.length),
inputBuffer,
outputBuffer,
]);
}
return Buffer.concat([
transaction.version,
timestamp ? timestamp : Buffer.alloc(0),
transaction.nVersionGroupId || Buffer.alloc(0),
useWitness ? Buffer.from("0001", "hex") : Buffer.alloc(0),
(0, varint_1.createVarint)(transaction.inputs.length),
inputBuffer,
outputBuffer,
]);
}
exports.serializeTransaction = serializeTransaction;
//# sourceMappingURL=serializeTransaction.js.map