mirror of
https://github.com/cypherstack/stack_wallet.git
synced 2024-12-23 11:59:30 +00:00
760 lines
22 KiB
Dart
760 lines
22 KiB
Dart
import 'dart:convert';
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import 'dart:io';
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import 'package:connectivity_plus/connectivity_plus.dart';
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import 'package:decimal/decimal.dart';
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import 'package:stackwallet/electrumx_rpc/rpc.dart';
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import 'package:stackwallet/exceptions/electrumx/no_such_transaction.dart';
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import 'package:stackwallet/utilities/logger.dart';
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import 'package:stackwallet/utilities/prefs.dart';
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import 'package:uuid/uuid.dart';
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class WifiOnlyException implements Exception {}
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class ElectrumXNode {
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ElectrumXNode({
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required this.address,
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required this.port,
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required this.name,
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required this.id,
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required this.useSSL,
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});
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final String address;
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final int port;
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final String name;
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final String id;
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final bool useSSL;
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factory ElectrumXNode.from(ElectrumXNode node) {
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return ElectrumXNode(
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address: node.address,
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port: node.port,
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name: node.name,
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id: node.id,
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useSSL: node.useSSL,
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);
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}
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@override
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String toString() {
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return "ElectrumXNode: {address: $address, port: $port, name: $name, useSSL: $useSSL}";
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}
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}
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class ElectrumX {
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String get host => _host;
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late String _host;
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int get port => _port;
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late int _port;
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bool get useSSL => _useSSL;
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late bool _useSSL;
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JsonRPC? get rpcClient => _rpcClient;
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JsonRPC? _rpcClient;
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late Prefs _prefs;
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List<ElectrumXNode>? failovers;
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int currentFailoverIndex = -1;
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ElectrumX(
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{required String host,
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required int port,
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required bool useSSL,
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required Prefs prefs,
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required List<ElectrumXNode> failovers,
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JsonRPC? client}) {
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_prefs = prefs;
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_host = host;
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_port = port;
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_useSSL = useSSL;
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_rpcClient = client;
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}
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factory ElectrumX.from({
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required ElectrumXNode node,
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required Prefs prefs,
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required List<ElectrumXNode> failovers,
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}) =>
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ElectrumX(
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host: node.address,
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port: node.port,
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useSSL: node.useSSL,
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prefs: prefs,
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failovers: failovers,
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);
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Future<bool> _allow() async {
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if (_prefs.wifiOnly) {
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return (await Connectivity().checkConnectivity()) ==
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ConnectivityResult.wifi;
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}
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return true;
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}
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/// Send raw rpc command
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Future<dynamic> request({
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required String command,
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List<dynamic> args = const [],
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Duration connectionTimeout = const Duration(seconds: 60),
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String? requestID,
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int retries = 2,
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}) async {
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if (!(await _allow())) {
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throw WifiOnlyException();
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}
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if (currentFailoverIndex == -1) {
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_rpcClient ??= JsonRPC(
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host: host,
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port: port,
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useSSL: useSSL,
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connectionTimeout: connectionTimeout,
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);
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} else {
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_rpcClient = JsonRPC(
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host: failovers![currentFailoverIndex].address,
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port: failovers![currentFailoverIndex].port,
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useSSL: failovers![currentFailoverIndex].useSSL,
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connectionTimeout: connectionTimeout,
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);
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}
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try {
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final requestId = requestID ?? const Uuid().v1();
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final jsonArgs = json.encode(args);
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final jsonRequestString =
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'{"jsonrpc": "2.0", "id": "$requestId","method": "$command","params": $jsonArgs}';
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// Logging.instance.log("ElectrumX jsonRequestString: $jsonRequestString");
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final response = await _rpcClient!.request(jsonRequestString);
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if (response.exception != null) {
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throw response.exception!;
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}
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if (response.data["error"] != null) {
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if (response.data["error"]
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.toString()
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.contains("No such mempool or blockchain transaction")) {
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throw NoSuchTransactionException(
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"No such mempool or blockchain transaction",
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args.first.toString(),
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);
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}
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throw Exception(
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"JSONRPC response\n"
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" command: $command\n"
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" args: $args\n"
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" error: $response.data",
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);
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}
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currentFailoverIndex = -1;
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return response.data;
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} on WifiOnlyException {
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rethrow;
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} on SocketException {
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// likely timed out so then retry
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if (retries > 0) {
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return request(
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command: command,
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args: args,
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connectionTimeout: connectionTimeout,
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requestID: requestID,
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retries: retries - 1,
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);
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} else {
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rethrow;
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}
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} catch (e) {
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if (failovers != null && currentFailoverIndex < failovers!.length - 1) {
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currentFailoverIndex++;
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return request(
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command: command,
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args: args,
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connectionTimeout: connectionTimeout,
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requestID: requestID,
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);
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} else {
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currentFailoverIndex = -1;
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rethrow;
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}
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}
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}
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/// send a batch request with [command] where [args] is a
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/// map of <request id string : arguments list>
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///
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/// returns a list of json response objects if no errors were found
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Future<List<Map<String, dynamic>>> batchRequest({
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required String command,
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required Map<String, List<dynamic>> args,
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Duration connectionTimeout = const Duration(seconds: 60),
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int retries = 2,
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}) async {
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if (!(await _allow())) {
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throw WifiOnlyException();
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}
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if (currentFailoverIndex == -1) {
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_rpcClient ??= JsonRPC(
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host: host,
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port: port,
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useSSL: useSSL,
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connectionTimeout: connectionTimeout,
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);
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} else {
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_rpcClient = JsonRPC(
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host: failovers![currentFailoverIndex].address,
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port: failovers![currentFailoverIndex].port,
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useSSL: failovers![currentFailoverIndex].useSSL,
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connectionTimeout: connectionTimeout,
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);
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}
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try {
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final List<String> requestStrings = [];
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for (final entry in args.entries) {
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final jsonArgs = json.encode(entry.value);
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requestStrings.add(
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'{"jsonrpc": "2.0", "id": "${entry.key}","method": "$command","params": $jsonArgs}');
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}
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// combine request strings into json array
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String request = "[";
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for (int i = 0; i < requestStrings.length - 1; i++) {
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request += "${requestStrings[i]},";
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}
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request += "${requestStrings.last}]";
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// Logging.instance.log("batch request: $request");
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// send batch request
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final jsonRpcResponse = (await _rpcClient!.request(request));
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if (jsonRpcResponse.exception != null) {
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throw jsonRpcResponse.exception!;
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}
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final response = jsonRpcResponse.data as List;
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// check for errors, format and throw if there are any
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final List<String> errors = [];
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for (int i = 0; i < response.length; i++) {
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final result = response[i];
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if (result["error"] != null || result["result"] == null) {
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errors.add(result.toString());
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}
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}
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if (errors.isNotEmpty) {
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String error = "[\n";
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for (int i = 0; i < errors.length; i++) {
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error += "${errors[i]}\n";
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}
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error += "]";
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throw Exception("JSONRPC response error: $error");
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}
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currentFailoverIndex = -1;
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return List<Map<String, dynamic>>.from(response, growable: false);
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} on WifiOnlyException {
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rethrow;
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} on SocketException {
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// likely timed out so then retry
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if (retries > 0) {
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return batchRequest(
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command: command,
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args: args,
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connectionTimeout: connectionTimeout,
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retries: retries - 1,
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);
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} else {
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rethrow;
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}
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} catch (e) {
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if (failovers != null && currentFailoverIndex < failovers!.length - 1) {
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currentFailoverIndex++;
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return batchRequest(
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command: command,
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args: args,
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connectionTimeout: connectionTimeout,
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);
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} else {
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currentFailoverIndex = -1;
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rethrow;
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}
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}
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}
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/// Ping the server to ensure it is responding
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///
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/// Returns true if ping succeeded
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Future<bool> ping({String? requestID, int retryCount = 1}) async {
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try {
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final response = await request(
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requestID: requestID,
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command: 'server.ping',
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connectionTimeout: const Duration(seconds: 2),
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retries: retryCount,
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).timeout(const Duration(seconds: 2)) as Map<String, dynamic>;
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return response.keys.contains("result") && response["result"] == null;
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} catch (e) {
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rethrow;
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}
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}
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/// Get most recent block header.
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///
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/// Returns a map with keys 'height' and 'hex' corresponding to the block height
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/// and the binary header as a hexadecimal string.
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/// Ex:
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/// {
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// "height": 520481,
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// "hex": "00000020890208a0ae3a3892aa047c5468725846577cfcd9b512b50000000000000000005dc2b02f2d297a9064ee103036c14d678f9afc7e3d9409cf53fd58b82e938e8ecbeca05a2d2103188ce804c4"
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// }
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Future<Map<String, dynamic>> getBlockHeadTip({String? requestID}) async {
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try {
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final response = await request(
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requestID: requestID,
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command: 'blockchain.headers.subscribe',
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);
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if (response["result"] == null) {
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Logging.instance.log(
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"getBlockHeadTip returned null response",
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level: LogLevel.Error,
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);
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throw 'getBlockHeadTip returned null response';
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}
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return Map<String, dynamic>.from(response["result"] as Map);
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} catch (e) {
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rethrow;
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}
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}
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/// Get server info
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///
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/// Returns a map with server information
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/// Ex:
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// {
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// "genesis_hash": "000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943",
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// "hosts": {"14.3.140.101": {"tcp_port": 51001, "ssl_port": 51002}},
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// "protocol_max": "1.0",
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// "protocol_min": "1.0",
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// "pruning": null,
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// "server_version": "ElectrumX 1.0.17",
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// "hash_function": "sha256"
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// }
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Future<Map<String, dynamic>> getServerFeatures({String? requestID}) async {
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try {
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final response = await request(
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requestID: requestID,
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command: 'server.features',
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);
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return Map<String, dynamic>.from(response["result"] as Map);
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} catch (e) {
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rethrow;
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}
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}
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/// Broadcast a transaction to the network.
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///
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/// The transaction hash as a hexadecimal string.
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Future<String> broadcastTransaction({
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required String rawTx,
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String? requestID,
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}) async {
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try {
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final response = await request(
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requestID: requestID,
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command: 'blockchain.transaction.broadcast',
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args: [
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rawTx,
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],
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);
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return response["result"] as String;
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} catch (e) {
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rethrow;
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}
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}
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/// Return the confirmed and unconfirmed balances for the scripthash of a given scripthash
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///
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/// Returns a map with keys confirmed and unconfirmed. The value of each is
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/// the appropriate balance in minimum coin units (satoshis).
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/// Ex:
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/// {
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/// "confirmed": 103873966,
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/// "unconfirmed": 23684400
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/// }
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Future<Map<String, dynamic>> getBalance({
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required String scripthash,
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String? requestID,
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}) async {
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try {
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final response = await request(
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requestID: requestID,
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command: 'blockchain.scripthash.get_balance',
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args: [
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scripthash,
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],
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);
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return Map<String, dynamic>.from(response["result"] as Map);
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} catch (e) {
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rethrow;
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}
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}
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/// Return the confirmed and unconfirmed history for the given scripthash.
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///
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/// Returns a list of maps that contain the tx_hash and height of the tx.
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/// Ex:
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/// [
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// {
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// "height": 200004,
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// "tx_hash": "acc3758bd2a26f869fcc67d48ff30b96464d476bca82c1cd6656e7d506816412"
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// },
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// {
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// "height": 215008,
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// "tx_hash": "f3e1bf48975b8d6060a9de8884296abb80be618dc00ae3cb2f6cee3085e09403"
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// }
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// ]
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Future<List<Map<String, dynamic>>> getHistory({
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required String scripthash,
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String? requestID,
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}) async {
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try {
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final response = await request(
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requestID: requestID,
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command: 'blockchain.scripthash.get_history',
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connectionTimeout: const Duration(minutes: 5),
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args: [
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scripthash,
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],
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);
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return List<Map<String, dynamic>>.from(response["result"] as List);
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} catch (e) {
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rethrow;
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}
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}
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Future<Map<String, List<Map<String, dynamic>>>> getBatchHistory(
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{required Map<String, List<dynamic>> args}) async {
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try {
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final response = await batchRequest(
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command: 'blockchain.scripthash.get_history',
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args: args,
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);
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final Map<String, List<Map<String, dynamic>>> result = {};
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for (int i = 0; i < response.length; i++) {
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result[response[i]["id"] as String] =
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List<Map<String, dynamic>>.from(response[i]["result"] as List);
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}
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return result;
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} catch (e) {
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rethrow;
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}
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}
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/// Return an ordered list of UTXOs sent to a script hash of the given scripthash.
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///
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/// Returns a list of maps.
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/// Ex:
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/// [
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// {
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// "tx_pos": 0,
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// "value": 45318048,
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// "tx_hash": "9f2c45a12db0144909b5db269415f7319179105982ac70ed80d76ea79d923ebf",
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// "height": 437146
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// },
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// {
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// "tx_pos": 0,
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// "value": 919195,
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// "tx_hash": "3d2290c93436a3e964cfc2f0950174d8847b1fbe3946432c4784e168da0f019f",
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// "height": 441696
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// }
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// ]
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Future<List<Map<String, dynamic>>> getUTXOs({
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required String scripthash,
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String? requestID,
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}) async {
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try {
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final response = await request(
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requestID: requestID,
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command: 'blockchain.scripthash.listunspent',
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args: [
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scripthash,
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],
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);
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return List<Map<String, dynamic>>.from(response["result"] as List);
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} catch (e) {
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rethrow;
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}
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}
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Future<Map<String, List<Map<String, dynamic>>>> getBatchUTXOs(
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{required Map<String, List<dynamic>> args}) async {
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try {
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final response = await batchRequest(
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command: 'blockchain.scripthash.listunspent',
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args: args,
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);
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final Map<String, List<Map<String, dynamic>>> result = {};
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for (int i = 0; i < response.length; i++) {
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result[response[i]["id"] as String] =
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List<Map<String, dynamic>>.from(response[i]["result"] as List);
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}
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return result;
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} catch (e) {
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rethrow;
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}
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}
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/// Returns a raw transaction given the tx_hash.
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///
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/// Returns a list of maps.
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/// Ex when verbose=false:
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/// "01000000015bb9142c960a838329694d3fe9ba08c2a6421c5158d8f7044cb7c48006c1b48"
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/// "4000000006a4730440220229ea5359a63c2b83a713fcc20d8c41b20d48fe639a639d2a824"
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/// "6a137f29d0fc02201de12de9c056912a4e581a62d12fb5f43ee6c08ed0238c32a1ee76921"
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/// "3ca8b8b412103bcf9a004f1f7a9a8d8acce7b51c983233d107329ff7c4fb53e44c855dbe1"
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/// "f6a4feffffff02c6b68200000000001976a9141041fb024bd7a1338ef1959026bbba86006"
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/// "4fe5f88ac50a8cf00000000001976a91445dac110239a7a3814535c15858b939211f85298"
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/// "88ac61ee0700"
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///
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///
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/// Ex when verbose=true:
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/// {
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/// "blockhash": "0000000000000000015a4f37ece911e5e3549f988e855548ce7494a0a08b2ad6",
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/// "blocktime": 1520074861,
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/// "confirmations": 679,
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/// "hash": "36a3692a41a8ac60b73f7f41ee23f5c917413e5b2fad9e44b34865bd0d601a3d",
|
||
/// "hex": "01000000015bb9142c960a838329694d3fe9ba08c2a6421c5158d8f7044cb7c48006c1b484000000006a4730440220229ea5359a63c2b83a713fcc20d8c41b20d48fe639a639d2a8246a137f29d0fc02201de12de9c056912a4e581a62d12fb5f43ee6c08ed0238c32a1ee769213ca8b8b412103bcf9a004f1f7a9a8d8acce7b51c983233d107329ff7c4fb53e44c855dbe1f6a4feffffff02c6b68200000000001976a9141041fb024bd7a1338ef1959026bbba860064fe5f88ac50a8cf00000000001976a91445dac110239a7a3814535c15858b939211f8529888ac61ee0700",
|
||
/// "locktime": 519777,
|
||
/// "size": 225,
|
||
/// "time": 1520074861,
|
||
/// "txid": "36a3692a41a8ac60b73f7f41ee23f5c917413e5b2fad9e44b34865bd0d601a3d",
|
||
/// "version": 1,
|
||
/// "vin": [ {
|
||
/// "scriptSig": {
|
||
/// "asm": "30440220229ea5359a63c2b83a713fcc20d8c41b20d48fe639a639d2a8246a137f29d0fc02201de12de9c056912a4e581a62d12fb5f43ee6c08ed0238c32a1ee769213ca8b8b[ALL|FORKID] 03bcf9a004f1f7a9a8d8acce7b51c983233d107329ff7c4fb53e44c855dbe1f6a4",
|
||
/// "hex": "4730440220229ea5359a63c2b83a713fcc20d8c41b20d48fe639a639d2a8246a137f29d0fc02201de12de9c056912a4e581a62d12fb5f43ee6c08ed0238c32a1ee769213ca8b8b412103bcf9a004f1f7a9a8d8acce7b51c983233d107329ff7c4fb53e44c855dbe1f6a4"
|
||
/// },
|
||
/// "sequence": 4294967294,
|
||
/// "txid": "84b4c10680c4b74c04f7d858511c42a6c208bae93f4d692983830a962c14b95b",
|
||
/// "vout": 0}],
|
||
/// "vout": [ { "n": 0,
|
||
/// "scriptPubKey": { "addresses": [ "12UxrUZ6tyTLoR1rT1N4nuCgS9DDURTJgP"],
|
||
/// "asm": "OP_DUP OP_HASH160 1041fb024bd7a1338ef1959026bbba860064fe5f OP_EQUALVERIFY OP_CHECKSIG",
|
||
/// "hex": "76a9141041fb024bd7a1338ef1959026bbba860064fe5f88ac",
|
||
/// "reqSigs": 1,
|
||
/// "type": "pubkeyhash"},
|
||
/// "value": 0.0856647},
|
||
/// { "n": 1,
|
||
/// "scriptPubKey": { "addresses": [ "17NMgYPrguizvpJmB1Sz62ZHeeFydBYbZJ"],
|
||
/// "asm": "OP_DUP OP_HASH160 45dac110239a7a3814535c15858b939211f85298 OP_EQUALVERIFY OP_CHECKSIG",
|
||
/// "hex": "76a91445dac110239a7a3814535c15858b939211f8529888ac",
|
||
/// "reqSigs": 1,
|
||
/// "type": "pubkeyhash"},
|
||
/// "value": 0.1360904}]}
|
||
Future<Map<String, dynamic>> getTransaction({
|
||
required String txHash,
|
||
bool verbose = true,
|
||
String? requestID,
|
||
}) async {
|
||
dynamic response;
|
||
try {
|
||
response = await request(
|
||
requestID: requestID,
|
||
command: 'blockchain.transaction.get',
|
||
args: [
|
||
txHash,
|
||
verbose,
|
||
],
|
||
);
|
||
if (!verbose) {
|
||
return {"rawtx": response["result"] as String};
|
||
}
|
||
|
||
return Map<String, dynamic>.from(response["result"] as Map);
|
||
} catch (e) {
|
||
Logging.instance.log(
|
||
"getTransaction($txHash) response: $response",
|
||
level: LogLevel.Error,
|
||
);
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
/// Returns the whole anonymity set for denomination in the groupId.
|
||
///
|
||
/// ex:
|
||
/// {
|
||
/// "blockHash": "37effb57352693f4efcb1710bf68e3a0d79ff6b8f1605529de3e0706d9ca21da",
|
||
/// "setHash": "aae1a64f19f5ccce1c242dfe331d8db2883a9508d998efa3def8a64844170fe4",
|
||
/// "coins": [
|
||
/// [dynamic list of length 4],
|
||
/// [dynamic list of length 4],
|
||
/// ....
|
||
/// [dynamic list of length 4],
|
||
/// [dynamic list of length 4],
|
||
/// ]
|
||
/// }
|
||
Future<Map<String, dynamic>> getAnonymitySet({
|
||
String groupId = "1",
|
||
String blockhash = "",
|
||
String? requestID,
|
||
}) async {
|
||
try {
|
||
Logging.instance.log("attempting to fetch lelantus.getanonymityset...",
|
||
level: LogLevel.Info);
|
||
final response = await request(
|
||
requestID: requestID,
|
||
command: 'lelantus.getanonymityset',
|
||
args: [
|
||
groupId,
|
||
blockhash,
|
||
],
|
||
);
|
||
Logging.instance.log("Fetching lelantus.getanonymityset finished",
|
||
level: LogLevel.Info);
|
||
return Map<String, dynamic>.from(response["result"] as Map);
|
||
} catch (e) {
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
//TODO add example to docs
|
||
///
|
||
///
|
||
/// Returns the block height and groupId of pubcoin.
|
||
Future<dynamic> getMintData({dynamic mints, String? requestID}) async {
|
||
try {
|
||
final response = await request(
|
||
requestID: requestID,
|
||
command: 'lelantus.getmintmetadata',
|
||
args: [
|
||
mints,
|
||
],
|
||
);
|
||
return response["result"];
|
||
} catch (e) {
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
//TODO add example to docs
|
||
/// Returns the whole set of the used coin serials.
|
||
Future<Map<String, dynamic>> getUsedCoinSerials({
|
||
String? requestID,
|
||
required int startNumber,
|
||
}) async {
|
||
try {
|
||
final response = await request(
|
||
requestID: requestID,
|
||
command: 'lelantus.getusedcoinserials',
|
||
args: [
|
||
"$startNumber",
|
||
]);
|
||
return Map<String, dynamic>.from(response["result"] as Map);
|
||
} catch (e) {
|
||
Logging.instance.log(e, level: LogLevel.Error);
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
/// Returns the latest set id
|
||
///
|
||
/// ex: 1
|
||
Future<int> getLatestCoinId({String? requestID}) async {
|
||
try {
|
||
final response = await request(
|
||
requestID: requestID,
|
||
command: 'lelantus.getlatestcoinid',
|
||
);
|
||
return response["result"] as int;
|
||
} catch (e) {
|
||
Logging.instance.log(e, level: LogLevel.Error);
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
// /// Returns about 13 megabytes of json data as of march 2, 2022
|
||
// Future<Map<String, dynamic>> getCoinsForRecovery(
|
||
// {dynamic setId, String requestID}) async {
|
||
// try {
|
||
// final response = await request(
|
||
// requestID: requestID,
|
||
// command: 'lelantus.getcoinsforrecovery',
|
||
// args: [
|
||
// setId ?? 1,
|
||
// ],
|
||
// );
|
||
// return response["result"];
|
||
// } catch (e) {
|
||
// Logging.instance.log(e);
|
||
// throw e;
|
||
// }
|
||
// }
|
||
|
||
/// Get the current fee rate.
|
||
///
|
||
/// Returns a map with the kay "rate" that corresponds to the free rate in satoshis
|
||
/// Ex:
|
||
/// {
|
||
// "rate": 1000,
|
||
// }
|
||
Future<Map<String, dynamic>> getFeeRate({String? requestID}) async {
|
||
try {
|
||
final response = await request(
|
||
requestID: requestID,
|
||
command: 'blockchain.getfeerate',
|
||
);
|
||
return Map<String, dynamic>.from(response["result"] as Map);
|
||
} catch (e) {
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
/// Return the estimated transaction fee per kilobyte for a transaction to be confirmed within a certain number of [blocks].
|
||
///
|
||
/// Returns a Decimal fee rate
|
||
/// Ex:
|
||
/// 0.00001000
|
||
Future<Decimal> estimateFee({String? requestID, required int blocks}) async {
|
||
try {
|
||
final response = await request(
|
||
requestID: requestID,
|
||
command: 'blockchain.estimatefee',
|
||
args: [
|
||
blocks,
|
||
],
|
||
);
|
||
return Decimal.parse(response["result"].toString());
|
||
} catch (e) {
|
||
rethrow;
|
||
}
|
||
}
|
||
|
||
/// Return the minimum fee a low-priority transaction must pay in order to be accepted to the daemon’s memory pool.
|
||
///
|
||
/// Returns a Decimal fee rate
|
||
/// Ex:
|
||
/// 0.00001000
|
||
Future<Decimal> relayFee({String? requestID}) async {
|
||
try {
|
||
final response = await request(
|
||
requestID: requestID,
|
||
command: 'blockchain.relayfee',
|
||
);
|
||
return Decimal.parse(response["result"].toString());
|
||
} catch (e) {
|
||
rethrow;
|
||
}
|
||
}
|
||
}
|