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Support p2pk track-address websocket subscriptions

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Mononaut 2023-07-26 10:47:59 +09:00
parent 395f47516a
commit 74b87b6006
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2 changed files with 83 additions and 2 deletions
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9
backend/src/api/transaction-utils.ts
View file

@ -3,6 +3,7 @@ import { IEsploraApi } from './bitcoin/esplora-api.interface';
import { Common } from './common';
import bitcoinApi, { bitcoinCoreApi } from './bitcoin/bitcoin-api-factory';
import * as bitcoinjs from 'bitcoinjs-lib';
import crypto from 'node:crypto';
class TransactionUtils {
constructor() { }
@ -170,6 +171,14 @@ class TransactionUtils {
16
);
}
public calcScriptHash(script: string): string {
if (!/^[0-9a-fA-F]*$/.test(script) || script.length % 2 !== 0) {
throw new Error('script is not a valid hex string');
}
const buf = Buffer.from(script, 'hex');
return crypto.createHash('sha256').update(buf).digest('hex');
}
}
export default new TransactionUtils();

74
backend/src/api/websocket-handler.ts
View file

@ -183,15 +183,22 @@ class WebsocketHandler {
}
if (parsedMessage && parsedMessage['track-address']) {
if (/^([a-km-zA-HJ-NP-Z1-9]{26,35}|[a-km-zA-HJ-NP-Z1-9]{80}|[a-z]{2,5}1[ac-hj-np-z02-9]{8,100}|[A-Z]{2,5}1[AC-HJ-NP-Z02-9]{8,100})$/
if (/^([a-km-zA-HJ-NP-Z1-9]{26,35}|[a-km-zA-HJ-NP-Z1-9]{80}|[a-z]{2,5}1[ac-hj-np-z02-9]{8,100}|[A-Z]{2,5}1[AC-HJ-NP-Z02-9]{8,100}|[0-9a-fA-F]{130})$/
.test(parsedMessage['track-address'])) {
let matchedAddress = parsedMessage['track-address'];
if (/^[A-Z]{2,5}1[AC-HJ-NP-Z02-9]{8,100}$/.test(parsedMessage['track-address'])) {
matchedAddress = matchedAddress.toLowerCase();
}
if (/^[0-9a-fA-F]{130}$/.test(parsedMessage['track-address'])) {
client['track-address'] = null;
client['track-scripthash'] = transactionUtils.calcScriptHash('41' + matchedAddress + 'ac');
} else {
client['track-address'] = matchedAddress;
client['track-scripthash'] = null;
}
} else {
client['track-address'] = null;
client['track-scripthash'] = null;
}
}
@ -546,6 +553,44 @@ class WebsocketHandler {
}
}
if (client['track-scripthash']) {
const foundTransactions: TransactionExtended[] = [];
for (const tx of newTransactions) {
const someVin = tx.vin.some((vin) => !!vin.prevout && vin.prevout.scriptpubkey_type === 'p2pk' && vin.prevout.scriptpubkey === client['track-scripthash']);
if (someVin) {
if (config.MEMPOOL.BACKEND !== 'esplora') {
try {
const fullTx = await transactionUtils.$getMempoolTransactionExtended(tx.txid, true);
foundTransactions.push(fullTx);
} catch (e) {
logger.debug('Error finding transaction in mempool: ' + (e instanceof Error ? e.message : e));
}
} else {
foundTransactions.push(tx);
}
return;
}
const someVout = tx.vout.some((vout) => vout.scriptpubkey_type === 'p2pk' && vout.scriptpubkey === client['track-scripthash']);
if (someVout) {
if (config.MEMPOOL.BACKEND !== 'esplora') {
try {
const fullTx = await transactionUtils.$getMempoolTransactionExtended(tx.txid, true);
foundTransactions.push(fullTx);
} catch (e) {
logger.debug('Error finding transaction in mempool: ' + (e instanceof Error ? e.message : e));
}
} else {
foundTransactions.push(tx);
}
}
}
if (foundTransactions.length) {
response['address-transactions'] = JSON.stringify(foundTransactions);
}
}
if (client['track-asset']) {
const foundTransactions: TransactionExtended[] = [];
@ -821,6 +866,33 @@ class WebsocketHandler {
}
}
if (client['track-scripthash']) {
const foundTransactions: TransactionExtended[] = [];
transactions.forEach((tx) => {
if (tx.vin && tx.vin.some((vin) => !!vin.prevout && vin.prevout.scriptpubkey_type === 'p2pk' && vin.prevout.scriptpubkey === client['track-scripthash'])) {
foundTransactions.push(tx);
return;
}
if (tx.vout && tx.vout.some((vout) => vout.scriptpubkey_type === 'p2pk' && vout.scriptpubkey === client['track-scripthash'])) {
foundTransactions.push(tx);
}
});
if (foundTransactions.length) {
foundTransactions.forEach((tx) => {
tx.status = {
confirmed: true,
block_height: block.height,
block_hash: block.id,
block_time: block.timestamp,
};
});
response['block-transactions'] = JSON.stringify(foundTransactions);
}
}
if (client['track-asset']) {
const foundTransactions: TransactionExtended[] = [];