mirror of
https://github.com/cake-tech/cake_wallet.git
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Nano rep fixes (#1145)
* add preference keys for default nano/banano rep * updates to change rep page, add success message * forgot to save this file * nano_client cleanup * first pass * refactor to use sharedprefs in nano_client * review fixes
This commit is contained in:
Matthew Fosse
GitHub
parent
8237b89d56
commit
f4e71c72ef
37 changed files with 321 additions and 149 deletions
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@ -8,18 +8,28 @@ import 'package:cw_nano/nano_util.dart';
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import 'package:http/http.dart' as http;
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import 'package:nanodart/nanodart.dart';
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import 'package:cw_core/node.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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class NanoClient {
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static const String DEFAULT_REPRESENTATIVE =
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"nano_38713x95zyjsqzx6nm1dsom1jmm668owkeb9913ax6nfgj15az3nu8xkx579";
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static const Map<String, String> CAKE_HEADERS = {
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"Content-Type": "application/json",
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"nano-app": "cake-wallet"
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};
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NanoClient() {
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SharedPreferences.getInstance().then((value) => prefs = value);
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}
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late SharedPreferences prefs;
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Node? _node;
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Node? _powNode;
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static const String _defaultDefaultRepresentative =
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"nano_38713x95zyjsqzx6nm1dsom1jmm668owkeb9913ax6nfgj15az3nu8xkx579";
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String getRepFromPrefs() {
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// from preferences_key.dart "defaultNanoRep" key:
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return prefs.getString("default_nano_representative") ?? _defaultDefaultRepresentative;
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}
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bool connect(Node node) {
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try {
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@ -84,44 +94,45 @@ class NanoClient {
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required String repAddress,
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required String ourAddress,
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}) async {
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AccountInfoResponse? accountInfo = await getAccountInfo(ourAddress);
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if (accountInfo == null) {
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throw Exception(
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"error while getting account info, you can't change the rep of an unopened account");
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}
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// construct the change block:
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Map<String, String> changeBlock = {
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"type": "state",
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"account": ourAddress,
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"previous": accountInfo.frontier,
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"representative": repAddress,
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"balance": accountInfo.balance,
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"link": "0000000000000000000000000000000000000000000000000000000000000000",
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"link_as_account": "nano_1111111111111111111111111111111111111111111111111111hifc8npp",
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};
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// sign the change block:
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final String hash = NanoBlocks.computeStateHash(
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NanoAccountType.NANO,
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changeBlock["account"]!,
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changeBlock["previous"]!,
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changeBlock["representative"]!,
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BigInt.parse(changeBlock["balance"]!),
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changeBlock["link"]!,
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);
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final String signature = NanoSignatures.signBlock(hash, privateKey);
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// get PoW for the send block:
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final String work = await requestWork(accountInfo.frontier);
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changeBlock["signature"] = signature;
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changeBlock["work"] = work;
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try {
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AccountInfoResponse? accountInfo = await getAccountInfo(ourAddress);
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if (accountInfo == null) {
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throw Exception("error while getting account info");
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}
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// construct the change block:
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Map<String, String> changeBlock = {
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"type": "state",
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"account": ourAddress,
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"previous": accountInfo.frontier,
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"representative": repAddress,
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"balance": accountInfo.balance,
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"link": "0000000000000000000000000000000000000000000000000000000000000000",
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"link_as_account": "nano_1111111111111111111111111111111111111111111111111111hifc8npp",
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};
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// sign the change block:
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final String hash = NanoBlocks.computeStateHash(
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NanoAccountType.NANO,
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changeBlock["account"]!,
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changeBlock["previous"]!,
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changeBlock["representative"]!,
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BigInt.parse(changeBlock["balance"]!),
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changeBlock["link"]!,
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);
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final String signature = NanoSignatures.signBlock(hash, privateKey);
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// get PoW for the send block:
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final String work = await requestWork(accountInfo.frontier);
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changeBlock["signature"] = signature;
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changeBlock["work"] = work;
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return await processBlock(changeBlock, "change");
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} catch (e) {
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throw Exception("error while changing representative");
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throw Exception("error while changing representative: $e");
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}
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}
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@ -191,68 +202,63 @@ class NanoClient {
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BigInt? balanceAfterTx,
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String? previousHash,
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}) async {
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try {
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// our address:
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final String publicAddress = NanoUtil.privateKeyToAddress(privateKey);
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// our address:
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final String publicAddress = NanoUtil.privateKeyToAddress(privateKey);
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// first get the current account balance:
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if (balanceAfterTx == null) {
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final BigInt currentBalance = (await getBalance(publicAddress)).currentBalance;
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final BigInt txAmount = BigInt.parse(amountRaw);
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balanceAfterTx = currentBalance - txAmount;
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}
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// get the account info (we need the frontier and representative):
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AccountInfoResponse? infoResponse = await getAccountInfo(publicAddress);
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if (infoResponse == null) {
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throw Exception(
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"error while getting account info! (we probably don't have an open account yet)");
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}
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String frontier = infoResponse.frontier;
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// override if provided:
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if (previousHash != null) {
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frontier = previousHash;
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}
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final String representative = infoResponse.representative;
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// link = destination address:
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final String link = NanoAccounts.extractPublicKey(destinationAddress);
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final String linkAsAccount = destinationAddress;
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// construct the send block:
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Map<String, String> sendBlock = {
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"type": "state",
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"account": publicAddress,
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"previous": frontier,
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"representative": representative,
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"balance": balanceAfterTx.toString(),
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"link": link,
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};
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// sign the send block:
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final String hash = NanoBlocks.computeStateHash(
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NanoAccountType.NANO,
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sendBlock["account"]!,
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sendBlock["previous"]!,
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sendBlock["representative"]!,
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BigInt.parse(sendBlock["balance"]!),
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sendBlock["link"]!,
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);
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final String signature = NanoSignatures.signBlock(hash, privateKey);
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// get PoW for the send block:
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final String work = await requestWork(frontier);
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sendBlock["link_as_account"] = linkAsAccount;
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sendBlock["signature"] = signature;
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sendBlock["work"] = work;
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// ready to post send block:
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return sendBlock;
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} catch (e) {
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print(e);
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rethrow;
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// first get the current account balance:
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if (balanceAfterTx == null) {
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final BigInt currentBalance = (await getBalance(publicAddress)).currentBalance;
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final BigInt txAmount = BigInt.parse(amountRaw);
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balanceAfterTx = currentBalance - txAmount;
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}
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// get the account info (we need the frontier and representative):
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AccountInfoResponse? infoResponse = await getAccountInfo(publicAddress);
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if (infoResponse == null) {
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throw Exception(
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"error while getting account info! (we probably don't have an open account yet)");
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}
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String frontier = infoResponse.frontier;
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// override if provided:
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if (previousHash != null) {
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frontier = previousHash;
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}
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final String representative = infoResponse.representative;
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// link = destination address:
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final String link = NanoAccounts.extractPublicKey(destinationAddress);
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final String linkAsAccount = destinationAddress;
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// construct the send block:
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Map<String, String> sendBlock = {
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"type": "state",
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"account": publicAddress,
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"previous": frontier,
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"representative": representative,
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"balance": balanceAfterTx.toString(),
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"link": link,
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};
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// sign the send block:
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final String hash = NanoBlocks.computeStateHash(
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NanoAccountType.NANO,
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sendBlock["account"]!,
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sendBlock["previous"]!,
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sendBlock["representative"]!,
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BigInt.parse(sendBlock["balance"]!),
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sendBlock["link"]!,
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);
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final String signature = NanoSignatures.signBlock(hash, privateKey);
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// get PoW for the send block:
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final String work = await requestWork(frontier);
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sendBlock["link_as_account"] = linkAsAccount;
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sendBlock["signature"] = signature;
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sendBlock["work"] = work;
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// ready to post send block:
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return sendBlock;
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}
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Future<void> receiveBlock({
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@ -274,7 +280,7 @@ class NanoClient {
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// account is not open yet, we need to create an open block:
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openBlock = true;
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// we don't have a representative set yet:
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representative = DEFAULT_REPRESENTATIVE;
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representative = await getRepFromPrefs();
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// we don't have a frontier yet:
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frontier = "0000000000000000000000000000000000000000000000000000000000000000";
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} else {
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@ -382,7 +382,7 @@ abstract class NanoWalletBase
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_representativeAddress = accountInfo.representative;
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} catch (e) {
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// account not found:
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_representativeAddress = NanoClient.DEFAULT_REPRESENTATIVE;
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_representativeAddress = await _client.getRepFromPrefs();
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throw Exception("Failed to get representative address $e");
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}
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}
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@ -290,6 +290,11 @@ packages:
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description: flutter
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source: sdk
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version: "0.0.0"
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flutter_web_plugins:
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dependency: transitive
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description: flutter
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source: sdk
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version: "0.0.0"
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frontend_server_client:
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dependency: transitive
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description:
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@ -594,6 +599,62 @@ packages:
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url: "https://pub.dev"
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source: hosted
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version: "2.2.2"
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shared_preferences:
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dependency: "direct main"
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description:
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name: shared_preferences
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sha256: "81429e4481e1ccfb51ede496e916348668fd0921627779233bd24cc3ff6abd02"
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url: "https://pub.dev"
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source: hosted
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version: "2.2.2"
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shared_preferences_android:
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dependency: transitive
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description:
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name: shared_preferences_android
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sha256: "8568a389334b6e83415b6aae55378e158fbc2314e074983362d20c562780fb06"
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url: "https://pub.dev"
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source: hosted
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version: "2.2.1"
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shared_preferences_foundation:
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dependency: transitive
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description:
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name: shared_preferences_foundation
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sha256: "7bf53a9f2d007329ee6f3df7268fd498f8373602f943c975598bbb34649b62a7"
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url: "https://pub.dev"
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source: hosted
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version: "2.3.4"
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shared_preferences_linux:
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dependency: transitive
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description:
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name: shared_preferences_linux
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sha256: "9f2cbcf46d4270ea8be39fa156d86379077c8a5228d9dfdb1164ae0bb93f1faa"
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url: "https://pub.dev"
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source: hosted
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version: "2.3.2"
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shared_preferences_platform_interface:
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dependency: transitive
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description:
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name: shared_preferences_platform_interface
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sha256: d4ec5fc9ebb2f2e056c617112aa75dcf92fc2e4faaf2ae999caa297473f75d8a
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url: "https://pub.dev"
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source: hosted
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version: "2.3.1"
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shared_preferences_web:
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dependency: transitive
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description:
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name: shared_preferences_web
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sha256: d762709c2bbe80626ecc819143013cc820fa49ca5e363620ee20a8b15a3e3daf
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url: "https://pub.dev"
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source: hosted
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version: "2.2.1"
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shared_preferences_windows:
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dependency: transitive
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description:
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name: shared_preferences_windows
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sha256: "841ad54f3c8381c480d0c9b508b89a34036f512482c407e6df7a9c4aa2ef8f59"
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url: "https://pub.dev"
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source: hosted
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version: "2.3.2"
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shelf:
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dependency: transitive
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description:
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@ -753,4 +814,4 @@ packages:
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version: "3.1.2"
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sdks:
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dart: ">=3.0.0 <4.0.0"
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flutter: ">=3.3.0"
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flutter: ">=3.7.0"
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@ -21,6 +21,7 @@ dependencies:
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ed25519_hd_key: ^2.2.0
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hex: ^0.2.0
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http: ^1.1.0
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shared_preferences: ^2.0.15
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cw_core:
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path: ../cw_core
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