mirror of
https://github.com/mempool/mempool.git
synced 2025-01-19 05:34:03 +01:00
move long-running forensics scans to separate service, throttle backend calls
This commit is contained in:
Mononaut
parent
37bf67aa38
commit
7d3ec63335
@ -82,7 +82,8 @@
|
||||
"BACKEND": "lnd",
|
||||
"STATS_REFRESH_INTERVAL": 600,
|
||||
"GRAPH_REFRESH_INTERVAL": 600,
|
||||
"LOGGER_UPDATE_INTERVAL": 30
|
||||
"LOGGER_UPDATE_INTERVAL": 30,
|
||||
"FORENSICS_INTERVAL": 43200
|
||||
},
|
||||
"LND": {
|
||||
"TLS_CERT_PATH": "tls.cert",
|
||||
|
||||
@ -98,7 +98,8 @@
|
||||
"TOPOLOGY_FOLDER": "__LIGHTNING_TOPOLOGY_FOLDER__",
|
||||
"STATS_REFRESH_INTERVAL": 600,
|
||||
"GRAPH_REFRESH_INTERVAL": 600,
|
||||
"LOGGER_UPDATE_INTERVAL": 30
|
||||
"LOGGER_UPDATE_INTERVAL": 30,
|
||||
"FORENSICS_INTERVAL": 43200
|
||||
},
|
||||
"LND": {
|
||||
"TLS_CERT_PATH": "",
|
||||
|
||||
@ -41,6 +41,7 @@ interface IConfig {
|
||||
STATS_REFRESH_INTERVAL: number;
|
||||
GRAPH_REFRESH_INTERVAL: number;
|
||||
LOGGER_UPDATE_INTERVAL: number;
|
||||
FORENSICS_INTERVAL: number;
|
||||
};
|
||||
LND: {
|
||||
TLS_CERT_PATH: string;
|
||||
@ -199,6 +200,7 @@ const defaults: IConfig = {
|
||||
'STATS_REFRESH_INTERVAL': 600,
|
||||
'GRAPH_REFRESH_INTERVAL': 600,
|
||||
'LOGGER_UPDATE_INTERVAL': 30,
|
||||
'FORENSICS_INTERVAL': 43200,
|
||||
},
|
||||
'LND': {
|
||||
'TLS_CERT_PATH': '',
|
||||
|
||||
@ -35,6 +35,7 @@ import bisqRoutes from './api/bisq/bisq.routes';
|
||||
import liquidRoutes from './api/liquid/liquid.routes';
|
||||
import bitcoinRoutes from './api/bitcoin/bitcoin.routes';
|
||||
import fundingTxFetcher from './tasks/lightning/sync-tasks/funding-tx-fetcher';
|
||||
import forensicsService from './tasks/lightning/forensics.service';
|
||||
|
||||
class Server {
|
||||
private wss: WebSocket.Server | undefined;
|
||||
@ -192,6 +193,7 @@ class Server {
|
||||
try {
|
||||
await fundingTxFetcher.$init();
|
||||
await networkSyncService.$startService();
|
||||
await forensicsService.$startService();
|
||||
await lightningStatsUpdater.$startService();
|
||||
} catch(e) {
|
||||
logger.err(`Nodejs lightning backend crashed. Restarting in 1 minute. Reason: ${(e instanceof Error ? e.message : e)}`);
|
||||
|
||||
223
backend/src/tasks/lightning/forensics.service.ts
Normal file
223
backend/src/tasks/lightning/forensics.service.ts
Normal file
@ -0,0 +1,223 @@
|
||||
import DB from '../../database';
|
||||
import logger from '../../logger';
|
||||
import channelsApi from '../../api/explorer/channels.api';
|
||||
import bitcoinApi from '../../api/bitcoin/bitcoin-api-factory';
|
||||
import config from '../../config';
|
||||
import { IEsploraApi } from '../../api/bitcoin/esplora-api.interface';
|
||||
import { Common } from '../../api/common';
|
||||
|
||||
class ForensicsService {
|
||||
loggerTimer = 0;
|
||||
closedChannelsScanBlock = 0;
|
||||
txCache: { [txid: string]: IEsploraApi.Transaction } = {};
|
||||
|
||||
constructor() {}
|
||||
|
||||
public async $startService(): Promise<void> {
|
||||
logger.info('Starting lightning network forensics service');
|
||||
|
||||
this.loggerTimer = new Date().getTime() / 1000;
|
||||
|
||||
await this.$runTasks();
|
||||
}
|
||||
|
||||
private async $runTasks(): Promise<void> {
|
||||
try {
|
||||
logger.info(`Running forensics scans`);
|
||||
|
||||
if (config.MEMPOOL.BACKEND === 'esplora') {
|
||||
await this.$runClosedChannelsForensics(false);
|
||||
}
|
||||
|
||||
} catch (e) {
|
||||
logger.err('ForensicsService.$runTasks() error: ' + (e instanceof Error ? e.message : e));
|
||||
}
|
||||
|
||||
setTimeout(() => { this.$runTasks(); }, 1000 * config.LIGHTNING.FORENSICS_INTERVAL);
|
||||
}
|
||||
|
||||
/*
|
||||
1. Mutually closed
|
||||
2. Forced closed
|
||||
3. Forced closed with penalty
|
||||
|
||||
┌────────────────────────────────────┐ ┌────────────────────────────┐
|
||||
│ outputs contain revocation script? ├──yes──► force close w/ penalty = 3 │
|
||||
└──────────────┬─────────────────────┘ └────────────────────────────┘
|
||||
no
|
||||
┌──────────────▼──────────────────────────┐
|
||||
│ outputs contain other lightning script? ├──┐
|
||||
└──────────────┬──────────────────────────┘ │
|
||||
no yes
|
||||
┌──────────────▼─────────────┐ │
|
||||
│ sequence starts with 0x80 │ ┌────────▼────────┐
|
||||
│ and ├──────► force close = 2 │
|
||||
│ locktime starts with 0x20? │ └─────────────────┘
|
||||
└──────────────┬─────────────┘
|
||||
no
|
||||
┌─────────▼────────┐
|
||||
│ mutual close = 1 │
|
||||
└──────────────────┘
|
||||
*/
|
||||
|
||||
public async $runClosedChannelsForensics(onlyNewChannels: boolean = false): Promise<void> {
|
||||
if (!config.ESPLORA.REST_API_URL) {
|
||||
return;
|
||||
}
|
||||
|
||||
let progress = 0;
|
||||
|
||||
try {
|
||||
logger.info(`Started running closed channel forensics...`);
|
||||
let channels;
|
||||
if (onlyNewChannels) {
|
||||
channels = await channelsApi.$getClosedChannelsWithoutReason();
|
||||
} else {
|
||||
channels = await channelsApi.$getUnresolvedClosedChannels();
|
||||
}
|
||||
|
||||
for (const channel of channels) {
|
||||
let reason = 0;
|
||||
let resolvedForceClose = false;
|
||||
// Only Esplora backend can retrieve spent transaction outputs
|
||||
const cached: string[] = [];
|
||||
try {
|
||||
let outspends: IEsploraApi.Outspend[] | undefined;
|
||||
try {
|
||||
outspends = await bitcoinApi.$getOutspends(channel.closing_transaction_id);
|
||||
await Common.sleep$(100);
|
||||
} catch (e) {
|
||||
logger.err(`Failed to call ${config.ESPLORA.REST_API_URL + '/tx/' + channel.closing_transaction_id + '/outspends'}. Reason ${e instanceof Error ? e.message : e}`);
|
||||
continue;
|
||||
}
|
||||
const lightningScriptReasons: number[] = [];
|
||||
for (const outspend of outspends) {
|
||||
if (outspend.spent && outspend.txid) {
|
||||
let spendingTx: IEsploraApi.Transaction | undefined = this.txCache[outspend.txid];
|
||||
if (!spendingTx) {
|
||||
try {
|
||||
spendingTx = await bitcoinApi.$getRawTransaction(outspend.txid);
|
||||
await Common.sleep$(100);
|
||||
this.txCache[outspend.txid] = spendingTx;
|
||||
} catch (e) {
|
||||
logger.err(`Failed to call ${config.ESPLORA.REST_API_URL + '/tx/' + outspend.txid}. Reason ${e instanceof Error ? e.message : e}`);
|
||||
continue;
|
||||
}
|
||||
}
|
||||
cached.push(spendingTx.txid);
|
||||
const lightningScript = this.findLightningScript(spendingTx.vin[outspend.vin || 0]);
|
||||
lightningScriptReasons.push(lightningScript);
|
||||
}
|
||||
}
|
||||
const filteredReasons = lightningScriptReasons.filter((r) => r !== 1);
|
||||
if (filteredReasons.length) {
|
||||
if (filteredReasons.some((r) => r === 2 || r === 4)) {
|
||||
reason = 3;
|
||||
} else {
|
||||
reason = 2;
|
||||
resolvedForceClose = true;
|
||||
}
|
||||
} else {
|
||||
/*
|
||||
We can detect a commitment transaction (force close) by reading Sequence and Locktime
|
||||
https://github.com/lightning/bolts/blob/master/03-transactions.md#commitment-transaction
|
||||
*/
|
||||
let closingTx: IEsploraApi.Transaction | undefined = this.txCache[channel.closing_transaction_id];
|
||||
if (!closingTx) {
|
||||
try {
|
||||
closingTx = await bitcoinApi.$getRawTransaction(channel.closing_transaction_id);
|
||||
await Common.sleep$(100);
|
||||
this.txCache[channel.closing_transaction_id] = closingTx;
|
||||
} catch (e) {
|
||||
logger.err(`Failed to call ${config.ESPLORA.REST_API_URL + '/tx/' + channel.closing_transaction_id}. Reason ${e instanceof Error ? e.message : e}`);
|
||||
continue;
|
||||
}
|
||||
}
|
||||
cached.push(closingTx.txid);
|
||||
const sequenceHex: string = closingTx.vin[0].sequence.toString(16);
|
||||
const locktimeHex: string = closingTx.locktime.toString(16);
|
||||
if (sequenceHex.substring(0, 2) === '80' && locktimeHex.substring(0, 2) === '20') {
|
||||
reason = 2; // Here we can't be sure if it's a penalty or not
|
||||
} else {
|
||||
reason = 1;
|
||||
}
|
||||
}
|
||||
if (reason) {
|
||||
logger.debug('Setting closing reason ' + reason + ' for channel: ' + channel.id + '.');
|
||||
await DB.query(`UPDATE channels SET closing_reason = ? WHERE id = ?`, [reason, channel.id]);
|
||||
if (reason === 2 && resolvedForceClose) {
|
||||
await DB.query(`UPDATE channels SET closing_resolved = ? WHERE id = ?`, [true, channel.id]);
|
||||
}
|
||||
if (reason !== 2 || resolvedForceClose) {
|
||||
cached.forEach(txid => {
|
||||
delete this.txCache[txid];
|
||||
});
|
||||
}
|
||||
}
|
||||
} catch (e) {
|
||||
logger.err(`$runClosedChannelsForensics() failed for channel ${channel.short_id}. Reason: ${e instanceof Error ? e.message : e}`);
|
||||
}
|
||||
|
||||
++progress;
|
||||
const elapsedSeconds = Math.round((new Date().getTime() / 1000) - this.loggerTimer);
|
||||
if (elapsedSeconds > 10) {
|
||||
logger.info(`Updating channel closed channel forensics ${progress}/${channels.length}`);
|
||||
this.loggerTimer = new Date().getTime() / 1000;
|
||||
}
|
||||
}
|
||||
logger.info(`Closed channels forensics scan complete.`);
|
||||
} catch (e) {
|
||||
logger.err('$runClosedChannelsForensics() error: ' + (e instanceof Error ? e.message : e));
|
||||
}
|
||||
}
|
||||
|
||||
private findLightningScript(vin: IEsploraApi.Vin): number {
|
||||
const topElement = vin.witness[vin.witness.length - 2];
|
||||
if (/^OP_IF OP_PUSHBYTES_33 \w{66} OP_ELSE OP_PUSH(NUM_\d+|BYTES_(1 \w{2}|2 \w{4})) OP_CSV OP_DROP OP_PUSHBYTES_33 \w{66} OP_ENDIF OP_CHECKSIG$/.test(vin.inner_witnessscript_asm)) {
|
||||
// https://github.com/lightning/bolts/blob/master/03-transactions.md#commitment-transaction-outputs
|
||||
if (topElement === '01') {
|
||||
// top element is '01' to get in the revocation path
|
||||
// 'Revoked Lightning Force Close';
|
||||
// Penalty force closed
|
||||
return 2;
|
||||
} else {
|
||||
// top element is '', this is a delayed to_local output
|
||||
// 'Lightning Force Close';
|
||||
return 3;
|
||||
}
|
||||
} else if (
|
||||
/^OP_DUP OP_HASH160 OP_PUSHBYTES_20 \w{40} OP_EQUAL OP_IF OP_CHECKSIG OP_ELSE OP_PUSHBYTES_33 \w{66} OP_SWAP OP_SIZE OP_PUSHBYTES_1 20 OP_EQUAL OP_NOTIF OP_DROP OP_PUSHNUM_2 OP_SWAP OP_PUSHBYTES_33 \w{66} OP_PUSHNUM_2 OP_CHECKMULTISIG OP_ELSE OP_HASH160 OP_PUSHBYTES_20 \w{40} OP_EQUALVERIFY OP_CHECKSIG OP_ENDIF (OP_PUSHNUM_1 OP_CSV OP_DROP |)OP_ENDIF$/.test(vin.inner_witnessscript_asm) ||
|
||||
/^OP_DUP OP_HASH160 OP_PUSHBYTES_20 \w{40} OP_EQUAL OP_IF OP_CHECKSIG OP_ELSE OP_PUSHBYTES_33 \w{66} OP_SWAP OP_SIZE OP_PUSHBYTES_1 20 OP_EQUAL OP_IF OP_HASH160 OP_PUSHBYTES_20 \w{40} OP_EQUALVERIFY OP_PUSHNUM_2 OP_SWAP OP_PUSHBYTES_33 \w{66} OP_PUSHNUM_2 OP_CHECKMULTISIG OP_ELSE OP_DROP OP_PUSHBYTES_3 \w{6} OP_CLTV OP_DROP OP_CHECKSIG OP_ENDIF (OP_PUSHNUM_1 OP_CSV OP_DROP |)OP_ENDIF$/.test(vin.inner_witnessscript_asm)
|
||||
) {
|
||||
// https://github.com/lightning/bolts/blob/master/03-transactions.md#offered-htlc-outputs
|
||||
// https://github.com/lightning/bolts/blob/master/03-transactions.md#received-htlc-outputs
|
||||
if (topElement.length === 66) {
|
||||
// top element is a public key
|
||||
// 'Revoked Lightning HTLC'; Penalty force closed
|
||||
return 4;
|
||||
} else if (topElement) {
|
||||
// top element is a preimage
|
||||
// 'Lightning HTLC';
|
||||
return 5;
|
||||
} else {
|
||||
// top element is '' to get in the expiry of the script
|
||||
// 'Expired Lightning HTLC';
|
||||
return 6;
|
||||
}
|
||||
} else if (/^OP_PUSHBYTES_33 \w{66} OP_CHECKSIG OP_IFDUP OP_NOTIF OP_PUSHNUM_16 OP_CSV OP_ENDIF$/.test(vin.inner_witnessscript_asm)) {
|
||||
// https://github.com/lightning/bolts/blob/master/03-transactions.md#to_local_anchor-and-to_remote_anchor-output-option_anchors
|
||||
if (topElement) {
|
||||
// top element is a signature
|
||||
// 'Lightning Anchor';
|
||||
return 7;
|
||||
} else {
|
||||
// top element is '', it has been swept after 16 blocks
|
||||
// 'Swept Lightning Anchor';
|
||||
return 8;
|
||||
}
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
export default new ForensicsService();
|
||||
@ -14,6 +14,7 @@ import NodesSocketsRepository from '../../repositories/NodesSocketsRepository';
|
||||
import { Common } from '../../api/common';
|
||||
import blocks from '../../api/blocks';
|
||||
import NodeRecordsRepository from '../../repositories/NodeRecordsRepository';
|
||||
import forensicsService from './forensics.service';
|
||||
|
||||
class NetworkSyncService {
|
||||
loggerTimer = 0;
|
||||
@ -46,8 +47,10 @@ class NetworkSyncService {
|
||||
await this.$lookUpCreationDateFromChain();
|
||||
await this.$updateNodeFirstSeen();
|
||||
await this.$scanForClosedChannels();
|
||||
|
||||
if (config.MEMPOOL.BACKEND === 'esplora') {
|
||||
await this.$runClosedChannelsForensics();
|
||||
// run forensics on new channels only
|
||||
await forensicsService.$runClosedChannelsForensics(true);
|
||||
}
|
||||
|
||||
} catch (e) {
|
||||
@ -301,174 +304,6 @@ class NetworkSyncService {
|
||||
logger.err('$scanForClosedChannels() error: ' + (e instanceof Error ? e.message : e));
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
1. Mutually closed
|
||||
2. Forced closed
|
||||
3. Forced closed with penalty
|
||||
|
||||
┌────────────────────────────────────┐ ┌────────────────────────────┐
|
||||
│ outputs contain revocation script? ├──yes──► force close w/ penalty = 3 │
|
||||
└──────────────┬─────────────────────┘ └────────────────────────────┘
|
||||
no
|
||||
┌──────────────▼──────────────────────────┐
|
||||
│ outputs contain other lightning script? ├──┐
|
||||
└──────────────┬──────────────────────────┘ │
|
||||
no yes
|
||||
┌──────────────▼─────────────┐ │
|
||||
│ sequence starts with 0x80 │ ┌────────▼────────┐
|
||||
│ and ├──────► force close = 2 │
|
||||
│ locktime starts with 0x20? │ └─────────────────┘
|
||||
└──────────────┬─────────────┘
|
||||
no
|
||||
┌─────────▼────────┐
|
||||
│ mutual close = 1 │
|
||||
└──────────────────┘
|
||||
*/
|
||||
|
||||
private async $runClosedChannelsForensics(skipUnresolved: boolean = false): Promise<void> {
|
||||
if (!config.ESPLORA.REST_API_URL) {
|
||||
return;
|
||||
}
|
||||
|
||||
let progress = 0;
|
||||
|
||||
try {
|
||||
logger.info(`Started running closed channel forensics...`);
|
||||
let channels;
|
||||
const closedChannels = await channelsApi.$getClosedChannelsWithoutReason();
|
||||
if (skipUnresolved) {
|
||||
channels = closedChannels;
|
||||
} else {
|
||||
const unresolvedChannels = await channelsApi.$getUnresolvedClosedChannels();
|
||||
channels = [...closedChannels, ...unresolvedChannels];
|
||||
}
|
||||
|
||||
for (const channel of channels) {
|
||||
let reason = 0;
|
||||
let resolvedForceClose = false;
|
||||
// Only Esplora backend can retrieve spent transaction outputs
|
||||
try {
|
||||
let outspends: IEsploraApi.Outspend[] | undefined;
|
||||
try {
|
||||
outspends = await bitcoinApi.$getOutspends(channel.closing_transaction_id);
|
||||
} catch (e) {
|
||||
logger.err(`Failed to call ${config.ESPLORA.REST_API_URL + '/tx/' + channel.closing_transaction_id + '/outspends'}. Reason ${e instanceof Error ? e.message : e}`);
|
||||
continue;
|
||||
}
|
||||
const lightningScriptReasons: number[] = [];
|
||||
for (const outspend of outspends) {
|
||||
if (outspend.spent && outspend.txid) {
|
||||
let spendingTx: IEsploraApi.Transaction | undefined;
|
||||
try {
|
||||
spendingTx = await bitcoinApi.$getRawTransaction(outspend.txid);
|
||||
} catch (e) {
|
||||
logger.err(`Failed to call ${config.ESPLORA.REST_API_URL + '/tx/' + outspend.txid}. Reason ${e instanceof Error ? e.message : e}`);
|
||||
continue;
|
||||
}
|
||||
const lightningScript = this.findLightningScript(spendingTx.vin[outspend.vin || 0]);
|
||||
lightningScriptReasons.push(lightningScript);
|
||||
}
|
||||
}
|
||||
const filteredReasons = lightningScriptReasons.filter((r) => r !== 1);
|
||||
if (filteredReasons.length) {
|
||||
if (filteredReasons.some((r) => r === 2 || r === 4)) {
|
||||
reason = 3;
|
||||
} else {
|
||||
reason = 2;
|
||||
resolvedForceClose = true;
|
||||
}
|
||||
} else {
|
||||
/*
|
||||
We can detect a commitment transaction (force close) by reading Sequence and Locktime
|
||||
https://github.com/lightning/bolts/blob/master/03-transactions.md#commitment-transaction
|
||||
*/
|
||||
let closingTx: IEsploraApi.Transaction | undefined;
|
||||
try {
|
||||
closingTx = await bitcoinApi.$getRawTransaction(channel.closing_transaction_id);
|
||||
} catch (e) {
|
||||
logger.err(`Failed to call ${config.ESPLORA.REST_API_URL + '/tx/' + channel.closing_transaction_id}. Reason ${e instanceof Error ? e.message : e}`);
|
||||
continue;
|
||||
}
|
||||
const sequenceHex: string = closingTx.vin[0].sequence.toString(16);
|
||||
const locktimeHex: string = closingTx.locktime.toString(16);
|
||||
if (sequenceHex.substring(0, 2) === '80' && locktimeHex.substring(0, 2) === '20') {
|
||||
reason = 2; // Here we can't be sure if it's a penalty or not
|
||||
} else {
|
||||
reason = 1;
|
||||
}
|
||||
}
|
||||
if (reason) {
|
||||
logger.debug('Setting closing reason ' + reason + ' for channel: ' + channel.id + '.');
|
||||
await DB.query(`UPDATE channels SET closing_reason = ? WHERE id = ?`, [reason, channel.id]);
|
||||
if (reason === 2 && resolvedForceClose) {
|
||||
await DB.query(`UPDATE channels SET closing_resolved = ? WHERE id = ?`, [true, channel.id]);
|
||||
}
|
||||
}
|
||||
} catch (e) {
|
||||
logger.err(`$runClosedChannelsForensics() failed for channel ${channel.short_id}. Reason: ${e instanceof Error ? e.message : e}`);
|
||||
}
|
||||
|
||||
++progress;
|
||||
const elapsedSeconds = Math.round((new Date().getTime() / 1000) - this.loggerTimer);
|
||||
if (elapsedSeconds > 10) {
|
||||
logger.info(`Updating channel closed channel forensics ${progress}/${channels.length}`);
|
||||
this.loggerTimer = new Date().getTime() / 1000;
|
||||
}
|
||||
}
|
||||
logger.info(`Closed channels forensics scan complete.`);
|
||||
} catch (e) {
|
||||
logger.err('$runClosedChannelsForensics() error: ' + (e instanceof Error ? e.message : e));
|
||||
}
|
||||
}
|
||||
|
||||
private findLightningScript(vin: IEsploraApi.Vin): number {
|
||||
const topElement = vin.witness[vin.witness.length - 2];
|
||||
if (/^OP_IF OP_PUSHBYTES_33 \w{66} OP_ELSE OP_PUSH(NUM_\d+|BYTES_(1 \w{2}|2 \w{4})) OP_CSV OP_DROP OP_PUSHBYTES_33 \w{66} OP_ENDIF OP_CHECKSIG$/.test(vin.inner_witnessscript_asm)) {
|
||||
// https://github.com/lightning/bolts/blob/master/03-transactions.md#commitment-transaction-outputs
|
||||
if (topElement === '01') {
|
||||
// top element is '01' to get in the revocation path
|
||||
// 'Revoked Lightning Force Close';
|
||||
// Penalty force closed
|
||||
return 2;
|
||||
} else {
|
||||
// top element is '', this is a delayed to_local output
|
||||
// 'Lightning Force Close';
|
||||
return 3;
|
||||
}
|
||||
} else if (
|
||||
/^OP_DUP OP_HASH160 OP_PUSHBYTES_20 \w{40} OP_EQUAL OP_IF OP_CHECKSIG OP_ELSE OP_PUSHBYTES_33 \w{66} OP_SWAP OP_SIZE OP_PUSHBYTES_1 20 OP_EQUAL OP_NOTIF OP_DROP OP_PUSHNUM_2 OP_SWAP OP_PUSHBYTES_33 \w{66} OP_PUSHNUM_2 OP_CHECKMULTISIG OP_ELSE OP_HASH160 OP_PUSHBYTES_20 \w{40} OP_EQUALVERIFY OP_CHECKSIG OP_ENDIF (OP_PUSHNUM_1 OP_CSV OP_DROP |)OP_ENDIF$/.test(vin.inner_witnessscript_asm) ||
|
||||
/^OP_DUP OP_HASH160 OP_PUSHBYTES_20 \w{40} OP_EQUAL OP_IF OP_CHECKSIG OP_ELSE OP_PUSHBYTES_33 \w{66} OP_SWAP OP_SIZE OP_PUSHBYTES_1 20 OP_EQUAL OP_IF OP_HASH160 OP_PUSHBYTES_20 \w{40} OP_EQUALVERIFY OP_PUSHNUM_2 OP_SWAP OP_PUSHBYTES_33 \w{66} OP_PUSHNUM_2 OP_CHECKMULTISIG OP_ELSE OP_DROP OP_PUSHBYTES_3 \w{6} OP_CLTV OP_DROP OP_CHECKSIG OP_ENDIF (OP_PUSHNUM_1 OP_CSV OP_DROP |)OP_ENDIF$/.test(vin.inner_witnessscript_asm)
|
||||
) {
|
||||
// https://github.com/lightning/bolts/blob/master/03-transactions.md#offered-htlc-outputs
|
||||
// https://github.com/lightning/bolts/blob/master/03-transactions.md#received-htlc-outputs
|
||||
if (topElement.length === 66) {
|
||||
// top element is a public key
|
||||
// 'Revoked Lightning HTLC'; Penalty force closed
|
||||
return 4;
|
||||
} else if (topElement) {
|
||||
// top element is a preimage
|
||||
// 'Lightning HTLC';
|
||||
return 5;
|
||||
} else {
|
||||
// top element is '' to get in the expiry of the script
|
||||
// 'Expired Lightning HTLC';
|
||||
return 6;
|
||||
}
|
||||
} else if (/^OP_PUSHBYTES_33 \w{66} OP_CHECKSIG OP_IFDUP OP_NOTIF OP_PUSHNUM_16 OP_CSV OP_ENDIF$/.test(vin.inner_witnessscript_asm)) {
|
||||
// https://github.com/lightning/bolts/blob/master/03-transactions.md#to_local_anchor-and-to_remote_anchor-output-option_anchors
|
||||
if (topElement) {
|
||||
// top element is a signature
|
||||
// 'Lightning Anchor';
|
||||
return 7;
|
||||
} else {
|
||||
// top element is '', it has been swept after 16 blocks
|
||||
// 'Swept Lightning Anchor';
|
||||
return 8;
|
||||
}
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
export default new NetworkSyncService();
|
||||
|
||||
Loading…
Reference in New Issue
Block a user