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const reverse = require("buffer-reverse");
const zmq = require("zeromq/v5-compat");
const { Op } = require("sequelize");
const { fromBase58 } = require("bip32");
const bitcoin = require("bitcoinjs-lib");
const zmqRawBlock = zmq.socket("sub");
zmqRawBlock.connect(config.bitcoin.zmqrawblock);
zmqRawBlock.subscribe("rawblock");
const zmqRawTx = zmq.socket("sub");
zmqRawTx.connect(config.bitcoin.zmqrawtx);
zmqRawTx.subscribe("rawtx");
const network =
bitcoin.networks[
config.bitcoin.network === "mainnet" ? "bitcoin" : config.bitcoin.network
];
zmqRawTx.on("message", async (topic, message, sequence) => {
const hex = message.toString("hex");
let tx = bitcoin.Transaction.fromHex(message);
let hash = reverse(tx.getHash()).toString("hex");
if (payments.includes(hash)) return;
Promise.all(
tx.outs.map(async o => {
try {
const { value } = o;
let address;
try {
address = bitcoin.address.fromOutputScript(o.script, network);
} catch (e) {
return;
}
if (
Object.keys(addresses).includes(address) &&
!change.includes(address)
) {
payments.push(hash);
let user = await db.User.findOne({
where: {
username: addresses[address]
}
});
const invoice = await db.Invoice.findOne({
where: {
user_id: user.id,
network: "bitcoin"
},
order: [["id", "DESC"]],
include: {
model: db.Account,
as: "account"
}
});
if (!invoice) return;
const currency = invoice ? invoice.currency : user.currency;
const rate = invoice ? invoice.rate : app.get("rates")[user.currency];
const tip = invoice ? invoice.tip : 0;
const memo = invoice ? invoice.memo : "";
let confirmed = false;
let { account } = invoice;
account.pending += value;
await account.save();
if (config.bitcoin.walletpass)
await bc.walletPassphrase(config.bitcoin.walletpass, 300);
let totalOutputs = tx.outs.reduce((a, b) => a + b.value, 0);
let totalInputs = 0;
for (let i = 0; i < tx.ins.length; i++) {
let { hash, index } = tx.ins[i];
hash = reverse(hash).toString("hex");
let hex = await bc.getRawTransaction(hash);
let inputTx = bitcoin.Transaction.fromHex(hex);
totalInputs += inputTx.outs[index].value;
}
let fee = totalInputs - totalOutputs;
let payment = await db.Payment.create({
account_id: account.id,
user_id: user.id,
hash,
fee,
memo,
amount: value - tip,
currency,
rate,
received: true,
tip,
confirmed,
address,
network: "bitcoin",
invoice_id: invoice.id
});
payment = payment.get({ plain: true });
payment.account = account.get({ plain: true });
emit(user.username, "account", account);
emit(user.username, "payment", payment);
l.info("bitcoin detected", user.username, value);
notify(user, `${value} SAT payment detected`);
await callWebhook(invoice, payment);
}
} catch (e) {
console.log(e);
}
})
);
});
let queue = {};
zmqRawBlock.on("message", async (topic, message, sequence) => {
const payments = await db.Payment.findAll({
where: { confirmed: false }
});
let block = bitcoin.Block.fromHex(message.toString("hex"));
block.transactions.map(tx => {
let hash = reverse(tx.getHash()).toString("hex");
if (payments.find(p => p.hash === hash)) queue[hash] = 1;
});
});
setInterval(async () => {
try {
const arr = Object.keys(queue);
for (let i = 0; i < arr.length; i++) {
const hash = arr[i];
let account, address, user, total;
await db.transaction(async transaction => {
let p = await db.Payment.findOne({
where: { hash, confirmed: 0, received: 1 },
include: [
{
model: db.Account,
as: "account"
},
{
model: db.Invoice,
as: "invoice"
},
{
model: db.User,
as: "user"
}
],
lock: transaction.LOCK.UPDATE,
transaction
});
if (p && p.address) address = p.address;
if (p && p.user) user = p.user;
if (p && p.account) {
({ account } = p);
total = p.amount + p.tip;
p.confirmed = 1;
await account.save({ transaction });
await account.increment({ balance: total }, { transaction });
await account.decrement(
{ pending: Math.min(account.pending, total) },
{ transaction }
);
await account.reload({ transaction });
await p.save({ transaction });
p = p.get({ plain: true });
emit(user.username, "account", account);
emit(user.username, "payment", p);
l.info("bitcoin confirmed", user.username, p.amount, p.tip);
notify(user, `${total} SAT payment confirmed`);
await callWebhook(p.invoice, p);
} else {
l.warn("couldn't find bitcoin payment", hash);
}
delete queue[hash];
});
let c = convert[address];
if (address && c) {
l.info(
"bitcoin detected to conversion address",
address,
c.address,
user.username
);
user.account = account;
await sendLiquid({
address: c.address,
amount: total - 100,
user,
limit: total
});
}
}
} catch (e) {
l.error(
"problem processing queued bitcoin transaction",
e.message,
e.stack
);
}
}, 1000);
|
